10-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

(Mark One)

x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2014

OR

¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from                      to                     

Commission file number: 1-14998

ATLAS PIPELINE PARTNERS, L.P.

(Exact name of registrant as specified in its charter)

DELAWARE	23-3011077
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
Park Place Corporate Center One 1000 Commerce Drive, 4th Floor Pittsburgh, Pennsylvania	15275-1011
(Address of principal executive office)	(Zip code)

Registrant’s telephone number, including area code: (877) 950-7473

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Name of each exchange on which registered
Common Units representing Limited Partnership Interests	New York Stock Exchange
8.25% Class E Cumulative Redeemable Perpetual Preferred Units	New York Stock Exchange

Securities registered pursuant to Section 12(g) of the Act:

None

(Title of class)

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    Yes  x    No  ¨

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.    Yes  ¨    No  x

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  x    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  x    No  ¨

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.  x

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See definitions of “large accelerated filer,” “accelerated filer” and “small reporting company” in Rule 12b-2 of the Exchange Act (Check one):

Large accelerated filer	x	Accelerated filer	¨
Non-accelerated filer	¨	Smaller reporting company	¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).    Yes  ¨    No  x

The aggregate market value of the equity securities held by non-affiliates of the registrant, based upon the closing price of $34.40 per common limited partner unit on June 30, 2014, was approximately $2,579.8 million.

The number of common units of the registrant outstanding on February 25, 2015 was 99,980,357.

DOCUMENTS INCORPORATED BY REFERENCE: None

ATLAS PIPELINE PARTNERS, L.P. AND SUBSIDIARIES

INDEX TO ANNUAL REPORT

ON FORM 10-K

		Page
Forward Looking Statements			1
Glossary of Terms			2
PART I.
Item 1.	Business		3
Item 1A.	Risk Factors		33
Item 1B.	Unresolved Staff Comments		53
Item 2.	Properties		53
Item 3.	Legal Proceedings		54
Item 4.	Mine Safety Disclosure		56
PART II.
Item 5.	Market for Registrant’s Common Equity, Related Unitholder Matters and Issuer Purchases of Equity Securities		57
Item 6.	Selected Financial Data		58
Item 7.	Management’s Discussion and Analysis of Financial Condition and Results of Operations		66
Item 7A.	Quantitative and Qualitative Disclosures About Market Risk		99
Item 8.	Financial Statements and Supplementary Data		100
Item 9.	Changes In and Disagreements with Accountants on Accounting and Financial Disclosure		161
Item 9A.	Controls and Procedures		161
Item 9B.	Other Information		163
PART III.
Item 10.	Directors, Executive Officers and Corporate Governance		163
Item 11.	Executive Compensation		171
Item 12.	Security Ownership of Certain Beneficial Owners and Management and Related Unitholder Matters		197
Item 13.	Certain Relationships and Related Transactions, and Director Independence		200
Item 14.	Principal Accountant Fees and Services		201
PART IV.
Item 15.	Exhibits and Financial Statement Schedules		202
SIGNATURES			206

FORWARD-LOOKING STATEMENTS

The matters discussed within this report include forward-looking statements. These statements may be identified by the use of forward-looking terminology such as “anticipate,” “believe,” “continue,” “could,” “estimate,” “expect,” “intend,” “may,” “might,” “plan,” “potential,” “predict,” “should,” or “will,” or the negative thereof or other variations thereon or comparable terminology. In particular, statements about our expectations, beliefs, plans, objectives, assumptions or future events or performance contained in this report are forward-looking statements. We have based these forward-looking statements on our current expectations, assumptions, estimates and projections. While we believe these expectations, assumptions, estimates and projections are reasonable, such forward-looking statements are only predictions and involve known and unknown risks and uncertainties, many of which are beyond our control. These and other important factors may cause our actual results, performance or achievements to differ materially from any future results, performance or achievements expressed or implied by these forward-looking statements. Some of the key factors that could cause actual results to differ from our expectations include:

• the demand for natural gas, NGLs and condensate;

• the price volatility of natural gas, NGLs and condensate;

• our ability to connect new wells to our gathering systems;

• our ability to integrate operations and personnel from acquired businesses;

• adverse effects of governmental and environmental regulation;

• limitations on our access to capital or on the market for our common units; and

• the strength and financial resources of our competitors.

Other factors that could cause actual results to differ from those implied by the forward-looking statements in this report are more fully described under Item 1A, “Risk Factors” in this report. Given these risks and uncertainties, you are cautioned not to place undue reliance on these forward-looking statements. The forward-looking statements included in this report are made only as of the date hereof. We do not undertake and specifically decline any obligation to update any such statements or to publicly announce the results of any revisions to any of these statements to reflect future events or developments.

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Glossary of Terms

Definitions of terms and acronyms generally used in the energy industry and in this report are as follows:

BPD	Barrels per day. Barrel—measurement for a standard US barrel is 42 gallons. Crude oil and condensate are generally reported in barrels.
BTU	British thermal unit, a basic measure of heat energy
Condensate	Liquid hydrocarbons present in casing head gas that condense within the gathering system and are removed prior to delivery to the gas plant. This product is generally sold on terms more closely tied to crude oil pricing.
EBITDA	Net income (loss) before net interest expense, income taxes, and depreciation and amortization. EBITDA is a non-GAAP measure.
FASB	Financial Accounting Standards Board
FERC	Federal Energy Regulatory Commission
Fractionation	The process used to separate an NGL stream into its individual components.
GAAP	Generally Accepted Accounting Principles
G.P.	general partner or general partnership
GPM	Gallons per minute
Keep-Whole	A contract with a natural gas producer whereby the plant operator pays for or returns gas having an equivalent BTU content to the gas received at the well-head.
L.P.	Limited Partner or Limited Partnership
MCF	Thousand cubic feet
MCFD	Thousand cubic feet per day
MMBTU	Million British thermal units
MMCFD	Million cubic feet per day
NGL(s)	Natural Gas Liquid(s), primarily ethane, propane, normal butane, isobutane and natural gasoline
Percentage of Proceeds (“POP”)	A contract with a natural gas producer whereby the plant operator retains a negotiated percentage of the sale proceeds.
Residue gas	The portion of natural gas remaining after natural gas is processed for removal of NGLs and impurities.
SEC	Securities and Exchange Commission

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PART I

ITEM 1. BUSINESS

Partnership Structure

We are a publicly-traded Delaware limited partnership formed in 1999 whose common units are listed on the New York Stock Exchange under the symbol “APL.” Our Class E cumulative redeemable perpetual preferred units (“Class E Preferred Units”) are listed on the New York Stock Exchange under the symbol “APLPE.”

Our general partner, Atlas Pipeline Partners GP, LLC (“Atlas Pipeline GP” or the “General Partner”), manages our operations and activities through its ownership of our general partner interest. Atlas Pipeline GP is a wholly-owned subsidiary of Atlas Energy, L.P. (“ATLS”), a publicly traded Delaware limited partnership (NYSE: ATLS), which owned 5.5% of the limited partner interests in us at December 31, 2014, as well as a 2.0% general partner interest.

The following chart displays our organizational structure as of December 31, 2014:

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General

We are a leading provider of natural gas gathering, processing and treating services primarily in the Anadarko, Ardmore, Arkoma and Permian Basins located in the southwestern and mid-continent regions of the United States and in the Eagle Ford Shale play in southern Texas.

Our operations are all located in or near areas of abundant and long-lived natural gas production, including, within Oklahoma, the Golden Trend, Mississippian Limestone and Hugoton Field in the Anadarko Basin; the South Central Oklahoma Oil Province (“SCOOP”) play in the Ardmore Basin; the Woodford Shale play in the Arkoma Basin; and within Texas, the Spraberry and Wolfberry Trends, which are oil plays with associated natural gas in the Permian Basin; the Eagle Ford Shale; and the Barnett Shale. Our gathering systems are connected to receipt points consisting primarily of individual well connections and, secondarily, central delivery points, which are linked to multiple wells. We believe we have significant scale in each of our primary service areas. We provide gathering, processing and treating services to the wells connected to our systems primarily under long-term contracts. As a result of the location and capacity of our gathering, processing and treating assets, we believe we are strategically positioned to capitalize on the drilling activity in our service areas.

We conduct our business in the midstream segment of the natural gas industry through two reportable segments: Oklahoma Gathering and Processing (“Oklahoma”) and Texas Gathering and Processing (“Texas”).

As a result of the May 2014 sale of two former subsidiaries that owned an interest in West Texas LPG Pipeline Limited Partnership (“WTLPG”) (see “–Recent Developments”), we realigned the management of our business from our previously reportable segments of “Gathering and Processing” and “Transportation and Treating” into the two new reportable segments.

The Oklahoma segment consists of our SouthOK and WestOK operations, which are comprised of natural gas gathering, processing and treating assets servicing drilling activity in the Anadarko, Ardmore and Arkoma Basins. These operations were formerly included within the previous Gathering and Processing segment. Revenues are primarily derived from the sale of residue gas and NGLs and the gathering, processing and treating of natural gas within the state of Oklahoma.

The Texas segment consists of (1) our SouthTX and WestTX operations, which are comprised of natural gas gathering and processing assets servicing drilling activity in the Permian Basin and the Eagle Ford Shale play in southern Texas; and (2) our natural gas gathering assets located in the Barnett Shale play in Texas. These assets were formerly included within the previous Gathering and Processing segment. Revenues are primarily derived from the sale of residue gas and NGLs and the gathering and processing of natural gas within the state of Texas.

The previous Transportation and Treating segment, which consisted of (1) our gas treating operations, which own contract gas treating facilities located in various shale plays; and (2) the former subsidiaries’ interest in WTLPG, which was sold in May 2014 (see “–Recent Developments”). This segment has been eliminated and the financial information is now included within Corporate and Other. On February 27, 2015, we agreed to transfer 100% of our interest in natural gas gathering assets located in the Appalachian Basin in Tennessee to our affiliate, Atlas Resource Partners, L.P. (NYSE: ARP) (“ARP”) (see “–Recent Developments”). Our Tennessee gathering assets were formerly included in the previous Gathering and Processing Segment, but are now included within Corporate and Other.

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Recent Developments

Targa Resources Partners LP Merger

On October 13, 2014, ATLS, our General Partner and we entered into a definitive merger agreement with Targa Resources Corp. (“TRC”), a publicly traded Delaware limited partnership (NYSE: TRGP), Targa Resources Partners, LP (“TRP”), a publicly traded Delaware limited partnership (NYSE: NGLS) and certain other parties (the “Merger Agreement”), pursuant to which TRP agreed to acquire us through a merger of a newly-formed, wholly-owned subsidiary of TRP with and into us (the “Merger”). Upon completion of the Merger, holders of our common units will have the right to receive (i) 0.5846 TRP common units and (ii) $1.26 in cash for each of our common units. Pursuant to the terms and conditions of the Merger Agreement, we have exercised our right under the certificate of designation of the Class D convertible preferred units (“Class D Preferred Units”) to convert all outstanding Class D Preferred Units into common units, which occurred on January 22, 2015 (see –Financing). Additionally, on January 27, 2015, we announced our intention to exercise our right under the certificate of designation of the Class E Preferred Units to redeem the Class E Preferred Units. TRP has agreed to deposit the funds for redemption with the paying agent (see –Financing).

Concurrently with the Merger Agreement, ATLS announced that it entered into a definitive merger agreement with TRC (the “ATLS Merger Agreement”), pursuant to which TRC agreed to acquire ATLS through a merger of a newly formed wholly-owned subsidiary of TRC with and into ATLS (the “ATLS Merger”). Upon completion of the ATLS Merger, holders of ATLS common units will have the right to receive (i) 0.1809 TRC shares of common stock, par value $0.001 per share, and (ii) $9.12 in cash, without interest, for each ATLS common unit.

Concurrently with the Merger Agreement and the ATLS Merger Agreement, ATLS agreed to (i) transfer its assets and liabilities, other than those related to us, to Atlas Energy Group, LLC (“Atlas Energy Group”), which is currently a subsidiary of ATLS and (ii) immediately prior to the ATLS Merger, effect a pro rata distribution to the ATLS unitholders of common units of Atlas Energy Group representing a 100% interest in Atlas Energy Group (the “Spin-Off”).

Following the announcement on October 13, 2014 of the Merger, we, our General Partner, ATLS, TRC, TRP, Targa Resources GP LLC (“TRP GP”), Trident MLP Merger Sub LLC (“MLP Merger Sub”) and the members of our General Partner’s board of directors were named as defendants in five putative unitholder class action lawsuits challenging the Merger, one of which has subsequently been voluntarily dismissed. In addition, ATLS, Atlas Energy GP LLC (“ATLS GP”), TRC, Trident GP Merger Sub LLC (“GP Merger Sub”) and members of ATLS GP’s board of directors were named as defendants in two putative unitholder class action lawsuits challenging the ATLS Merger, one of which has subsequently been voluntarily dismissed. The lawsuits filed generally allege that the individual defendants breached their fiduciary duties and/or contractual obligations by, among other things, failing to obtain sufficient value for our unitholders and ATLS unitholders, respectively, in the Merger and ATLS Merger. The plaintiffs seek, among other things, injunctive relief, unspecified compensatory and/or rescissory damages, attorney’s fees, other expenses and costs.

ATLS has also been named as a defendant in a putative class action and derivative lawsuit brought on January 28, 2015 and amended on February 23, 2015, by a shareholder of TRC against TRC and its directors. The lawsuit generally alleges that the individual defendants breached their fiduciary duties by, among other things, approving the ATLS Merger and failing to disclose purportedly material information concerning the ATLS Merger. The lawsuit seeks, among other things, injunctive relief, compensatory and rescissory damages, attorney’s fees, interest and costs.

All of the above referenced lawsuits, except for the January 2015 lawsuit and the two lawsuits that have been voluntarily dismissed, were settled, subject to court approval, pursuant to memoranda of understanding executed in February 2015, which are conditioned upon, among other things, the execution of an appropriate stipulations of settlement. The stipulations of settlement will be subject to customary conditions, including, among other things, judicial approval of the proposed settlements contemplated by the memoranda of understanding. There can be no assurance that the parties will ultimately enter into stipulations of settlement, that the court will approve the settlements, that the settlements will not be terminated according to their terms or that some unitholders will not opt-out of the settlements.

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At this time, we cannot reasonably estimate the range of possible loss as a result of the lawsuits. See “Item 3: Legal Proceedings” for more information regarding these lawsuits.

The closing of the Merger is subject to approval by holders of a majority of our common units and other closing conditions, including the closing of the ATLS Merger and the Spin-Off. On February 20, 2015, we held a special meeting, where holders of a majority of our common units approved the Merger. In addition, at special meetings held on the same day: (i) a majority of the holders of ATLS common units approved the ATLS Merger and (ii) a majority of the holders of TRC common stock approved the issuance of TRC shares in connection with the Merger. Completion of each of the ATLS Merger and the Spin-Off are also conditioned on the parties standing ready to complete the Merger. We expect the Merger to close on February 27, 2015.

On February 27, 2015, we agreed to transfer 100% of our interest in the Tennessee gas gathering assets to our affiliate, ARP, for $1.0 million plus working capital adjustments, concurrent with the closing of the Merger on February 27, 2015.

West Texas LPG Sale

On May 14, 2014, we completed the sale of two subsidiaries, which held an aggregate 20% interest in WTLPG, to a subsidiary of Martin Midstream Partners L.P. (NYSE: MMLP). We received $131.0 million in proceeds, net of selling costs and working capital adjustments, which were used to pay down our revolving credit facility.

Growth Projects

In December 2014, we completed the connection between the Velma and Arkoma systems within the SouthOK system. The connection accommodates the increased demand for processing capacity behind the Velma system, where the emerging SCOOP play has attracted significant producer interest. The connection between Velma and Arkoma offers us more operational flexibility and helps us better utilize our processing capacity across the SouthOK system.

On September 15, 2014, we placed in service a new 200 MMCFD cryogenic processing plant, known as the Edward plant, in our WestTX system in the Permian Basin of West Texas, increasing the WestTX system capacity to 655 MMCFD.

On June 25, 2014, we placed in service a new 200 MMCFD cryogenic processing plant, known as the Silver Oak II plant, in our SouthTX system in the Eagle Ford Shale play of southern Texas, increasing the SouthTX system capacity to 400 MMCFD.

On May 1, 2014, we placed in service a new 120 MMCFD cryogenic processing plant, known as the Stonewall plant, in our SouthOK system in the Arkoma Basin of Oklahoma, increasing the SouthOK system capacity to 500 MMCFD. A planned expansion of the Stonewall plant to raise the processing capacity to 200 MMCFD is partially completed and capacity was increased to 160 MMCFD as of December 31, 2014. The full expansion is anticipated to be completed in the first quarter of 2015.

On April 24, 2014, we announced plans to expand the gathering footprint of our WestTX system. This project includes the laying of a high pressure gathering line into Martin and Andrews counties of Texas, as well as adding incremental compression and processing, including installation of a new, 200 MMCFD cryogenic processing plant, known as the Buffalo plant, which is expected to be completed during 2016. This facility will increase the processing capacity in the Permian Basin to 855 MMCFD.

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Financing

On January 27, 2015, we delivered notice of our intention to redeem all outstanding shares of our Class E Preferred Units. The redemption of the Class E Preferred Units will occur immediately prior to the close of the Merger. We expect the Merger to close on February 27, 2015 and, accordingly, the redemption would also be on February 27, 2015. The Class E Preferred Units will be redeemed at a redemption price of $25.00 per unit, plus an amount equal to all accumulated and unpaid distributions on the Class E Preferred Units as of the redemption date. TRP has agreed to deposit the funds for such redemption with our paying agent.

On January 22, 2015, we exercised our right under the certificate of designation of the Class D Preferred Units (“Class D Certificate of Designation”) to convert all outstanding Class D Preferred Units and unpaid distributions into common limited partner units, based upon the Execution Date Unit Price of $29.75 per unit, as defined by the Class D Certificate of Designation. As a result of the conversion, 15,389,575 common limited partner units were issued (see “Item 8. Financial Statements and Supplementary Data – Note 6 – Class D Preferred Units”).

On January 15, 2015, TRP announced cash tender offers to redeem any and all of our outstanding $500.0 million aggregate principal amount of our 6.625% unsecured senior notes due October 1, 2020 (“6.625% Senior Notes”); $400.0 million aggregate principal amount of our 4.75% unsecured senior notes due November 15, 2021 (“4.75% Senior Notes”); and $650.0 million aggregate principal amount of our 5.875% unsecured senior notes due August 1, 2023 (“5.875% Senior Notes”). TRP made the cash tender offers in connection with, and conditioned upon, the consummation of the Merger. The Merger, however, is not conditioned on the consummation of the tender offers. On February 2, 2015, TRP announced as of January 29, 2015, it had received tenders pursuant to its previously announced cash tender offers on January 15, 2015 from holders representing:

• less than a majority of the total outstanding $500.0 million of our 6.625% Senior Notes;

• approximately 98.3% of the total outstanding $400.0 million of our 4.75% Senior Notes; and

• approximately 91.0% of the total outstanding $650.0 million of our 5.875% Senior Notes.

Also on February 2, 2015, TRP announced a change of control cash tender offer for any and all of the outstanding $500.0 million of our 6.625% Senior Notes. TRP made the change of control cash tender offer in connection with, and conditioned upon, the consummation of the Merger. The Merger, however, is not conditioned on the consummation of the change in control cash tender offer. The change in control cash tender offer was made independently of TRP’s January 15, 2015 cash tender offers.

On August 28, 2014, we entered into a Second Amended and Restated Credit Agreement (the “Revised Credit Agreement”) which, among other changes:

• extended the maturity date to August 28, 2019;

• increased the revolving credit commitment from $600 million to $800 million and the incremental revolving credit amount from $200 million to $250 million;

• reduced by 0.25% the applicable margin used to determine interest rates for LIBOR Rate Loans, as defined in the Revised Credit Agreement, and for Base Rate Loans, as defined in the Revised Credit Agreement, depending on the Consolidated Funded Debt Ratio, as defined in the Revised Credit Agreement;

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• allows us to request incremental term loans, provided the sum of any revolving credit commitments and incremental term loans may not exceed $1.05 billion; and

• changed the per annum interest rate on borrowings to (i) the higher of (a) the prime rate, (b) the federal funds rate plus 0.50% and (c) the LIBOR rate plus 1.0%, or (ii) the LIBOR rate for the applicable period, in each case plus the applicable margin.

On May 12, 2014, we entered into an Equity Distribution Agreement (the “2014 EDA”) with Citigroup Global Markets Inc., Wells Fargo Securities, LLC and MLV & Co. LLC, as sales agents. Pursuant to the 2014 EDA, we may offer and sell from time to time through our sales agents, common units having an aggregate value of up to $250.0 million. Sales are at market prices prevailing at the time of the sale. However, we are currently restricted from selling common units by the Merger Agreement. During the year ended December 31, 2014, we issued 3,558,005 common units under the 2014 EDA for proceeds of $121.6 million, net of $1.2 million in commissions paid to the sales agents.

On March 17, 2014, we issued 5,060,000 of our Class E Preferred Units to the public at an offering price of $25.00 per Class E Preferred Unit. We received $122.3 million in net proceeds. The proceeds were used to pay down our revolving credit facility.

Business Strategy

The primary business objective of our management team is to provide stable long-term cash distributions to our unitholders. Our business strategies focus on creating value for our unitholders by providing efficient operations; focusing on prudent growth opportunities via organic growth projects and external acquisitions; and maintaining a commodity risk management program in an attempt to manage our commodity price exposure. We intend to accomplish our primary business objective by executing on the following:

• Expanding operations through organic growth projects and increasing the profitability of our existing assets. In many cases, we can expand our gathering pipelines and processing plants and, to the extent we have excess capacity, we can connect and process new supplies of natural gas with minimal additional capital requirements, also increasing plant efficiency and economics. We plan to access new supplies of natural gas by providing excellent service to our existing customers; aggressively marketing our services to new customers; and prudently expanding our existing infrastructure to ensure our services can meet the needs of potential customers. Our recent construction of the Stonewall, Silver Oak II, and Edward plants, our completion of the connection between the Arkoma and Velma systems and our announced construction of the Buffalo plant are examples of executing this strategy.

• Pursuing strategic acquisitions. We continue to pursue strategic acquisitions that leverage our existing asset base, employees and customer relationships. In the past, we have pursued opportunities in certain regions outside of our current areas of operation and will continue to do so when these options make sense economically and strategically.

• Reducing the sensitivity of our cash flows through prudent economic risk management and contract arrangements. We attempt to structure our contracts in a manner that allows us to achieve our target rates of return while reducing our exposure to commodity price

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movements. We actively review our contract mix and seek to optimize a balance of cash flow stability with attractive economic returns. Our commodity price risk management activities are designed to reduce the effect of commodity price volatility related to future sales of natural gas, NGLs and condensate, while allowing us to meet our debt service requirements; fund our maintenance capital program; and meet our distribution objectives.

• Maintaining our financial flexibility. We intend to maintain a capital structure in which we do not significantly exceed equal amounts of debt and equity on a long-term basis while not jeopardizing our ability to achieve our other business strategies as listed above. We seek to maintain a minimum total liquidity of at least $100.0 million; a ratio of debt to capital of not more than 50%; and a ratio of long-term debt to trailing 12-month EBITDA, as defined in our Revised Credit Agreement, of less than 4x. We believe our revolving credit facility, our ability to issue additional long-term debt or limited partner units and our relationships with our partners provide us with the ability to achieve this strategy. We will also consider alternative financing, joint venture arrangements and other means that allow us to achieve our business strategies while continuing to maintain an acceptable capital structure.

Contracts and Customer Relationships

Our principal revenue is generated from fees for the gathering, processing and treating of natural gas and the sale of natural gas, NGLs and condensate. For the year ended December 31, 2014, ONEOK Hydrocarbon, L.P. (“ONEOK”); DCP NGL Services, LLC, a subsidiary of DCP Midstream, LLC (“DCP”); and BP Energy Company accounted for approximately 21%, 13% and 11%, respectively, of our third-party revenues within the Oklahoma segment and DCP and Tenaska Marketing Ventures, Inc. accounted for approximately 47% and 16%, respectively, of our third-party revenues within the Texas segment, with no other single customer accounting for more than 10% for this period.

Natural Gas Supply

We have natural gas purchase, gathering and processing agreements with certain producers. These agreements provide for the purchase or gathering of natural gas, primarily under Fee-Based and POP arrangements (see “Item 8: Financial Statements and Supplementary Data – Note 2 – Summary of Significant Accounting Policies”). Many of the agreements provide for gathering, processing, compression, treating and/or low volume fees. Producers generally provide, in-kind, their proportionate share of compressor and plant fuel required to gather the natural gas and to operate our processing plants. In addition, the producers generally bear their proportionate share of gathering system line loss and natural gas plant “shrinkage” for the gas consumed in the production of NGLs.

We have long-term, service-driven relationships with our producing customers, who comprise some of the largest producers in our areas. Several of our top producers have contracts with primary terms running into 2020 and beyond. At the end of the primary terms, most of the contracts with producers on our gathering systems have evergreen term extensions.

In our Oklahoma segment on our WestOK system, we have a contract with SandRidge with a term currently extending through 2017. As part of the agreement, SandRidge has agreed to dedicate the majority of its developed acreage covering the Mississippian Lime formation.

In our Texas segment on our SouthTX system, our primary producers, Statoil Natural Gas LLC (“Statoil”) and Talisman Energy USA Inc. (“Talisman”) both have fixed-fee long term agreements with volume commitments extending into 2022. Also in our Texas segment on our WestTX system, we have a gas sales and purchase agreement with Pioneer Natural Resources Company (NYSE: PXD) (“Pioneer”)

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with a term extending into 2032. The gas sales and purchase agreement requires all Pioneer wells within an “area of mutual interest” be dedicated to that system’s gathering and processing operations in return for specified natural gas processing rates. Through this agreement, we anticipate we will continue to provide gathering and processing for the majority of Pioneer’s wells in the Spraberry and Wolfberry Trends in the Permian Basin.

Natural Gas and NGL Marketing

We typically sell natural gas to purchasers downstream of our processing plants priced at various first-of-month indices as published in Inside FERC. Additionally we sell swing gas, which is natural gas sold on a daily basis at various Platt’s Gas Daily midpoint prices.

All NGL agreements are priced at the average daily Oil Price Information Service (or OPIS) price for the month for the selected market, subject to reduction by a “Base Differential” for transportation and fractionation fees and, if applicable, quality adjustment fees.

The Midstream Natural Gas Gathering and Processing Industry

The midstream natural gas gathering and processing industry is characterized by regional competition based on the proximity of gathering systems and processing plants to producing natural gas wells.

The natural gas gathering process begins with the drilling of wells into natural gas or oil bearing rock formations. Once a well has been completed, the well is connected to a gathering system. Gathering systems generally consist of a network of pipelines that collect natural gas from points near producing wells and transport gas and other associated products to plants for processing and treating and to larger pipelines for further transportation to end-user markets. Gathering systems are operated at design pressures via pipe size and compression that help maximize the total throughput from all connected wells.

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While natural gas produced in some areas does not require treating or processing, natural gas produced in other areas is not suitable for long-haul pipeline transportation or commercial use and must be compressed; gathered via pipeline to a central processing facility; potentially treated; and then processed to remove certain hydrocarbon components, such as NGLs and other contaminants, that would interfere with pipeline transportation or the end use of the natural gas. Natural gas treating and processing plants generally treat (remove carbon dioxide and hydrogen sulfide) and extract the NGLs, enabling the treated, “dry” gas, commonly referred to as residue gas, to meet pipeline specifications for long-haul transport to end users. After being separated from natural gas at the processing plant, the mixed NGL stream, commonly referred to as “y-grade” or “raw mix,” is typically transported in pipelines to a centralized facility for fractionation into discrete NGL purity products: ethane, propane, normal butane, isobutane, and natural gasoline.

Our Oklahoma Operations

Our Oklahoma operations own, operate and/or have interests in 10 natural gas processing facilities, one treating facility and approximately 7,600 miles of intrastate natural gas gathering systems located in Oklahoma and Kansas. Our Oklahoma gathering systems, processing plants and treating assets service long-lived natural gas regions, including the Anadarko, Ardmore and Arkoma Basins. Our Oklahoma systems have receipt points consisting primarily of individual well connections and, secondarily, central delivery points, which are linked to multiple wells from which we gather natural gas from oil and natural gas wells; process the raw natural gas into residue gas by extracting NGLs and removing impurities; and transport natural gas to interstate and public utility pipelines for delivery to customers.

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Gathering Systems

SouthOK. SouthOK consists of the Velma and Arkoma systems, which were connected during 2014 through the installation of approximately 55 miles of gathering pipeline between the systems (see “–Recent Developments”).

The SouthOK gathering system is located in the Ardmore and Anadarko Basins and includes the Golden Trend, SCOOP, and Woodford Shale areas of southern Oklahoma. The gathering system has approximately 1,500 miles of active pipelines. The primary natural gas suppliers on the SouthOK gathering system include Atoka Midstream, LLC; DCP Midstream, L.P.; Marathon Oil Company (“Marathon”); MarkWest Oklahoma Gas Company, LLC (“MarkWest”); Merit Management Partners; XTO Energy, Inc. (“XTO”); and Vanguard Natural Resources, LLC.

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WestOK. The WestOK gathering system is located in north central Oklahoma and southern Kansas’ Anadarko Basin. The gathering system has approximately 6,100 miles of active natural gas gathering pipelines. The primary natural gas suppliers on the WestOK gathering system include Chesapeake Energy Corporation and SandRidge Exploration and Production, LLC (“Sandridge”).

Processing Plants

SouthOK. The SouthOK system includes six separate processing plants: Velma, Velma V-60 (“V-60”), Atoka, Coalgate, Stonewall and Tupelo; and the East Rockpile treating facility. SouthOK’s processing operations have a total name-plate capacity of 540 MMCFD. The Velma facility is a 100 MMFD cryogenic plant in Stephens County, Oklahoma, which was updated in 2003. The V-60 facility is a 60 MMFD cryogenic plant in Stephens County, Oklahoma, which was placed into service in 2012. The Tupelo facility is a 120 MMCFD cryogenic plant in Coal County, Oklahoma, which started operations in December 2011. The East Rockpile facility is a wholly-owned 250 GPM amine treating plant in Pittsburg County, Oklahoma, which started operations in June 2007.

The Atoka, Coalgate and Stonewall facilities are owned by Centrahoma Processing, LLC (“Centrahoma”), a joint venture that we operate, and in which we have a 60% ownership interest; the remaining 40% ownership interest is held by MarkWest. The Atoka facility is a 20 MMCFD cryogenic plant in Atoka County, Oklahoma, which started operations in November 2006 and is currently idle. The Coalgate facility is an 80 MMCFD cryogenic plant in Coal County, Oklahoma, which started operations in September 2007. The Stonewall facility is a 160 MMCFD cryogenic plant located near the Coalgate and Tupelo facilities, which was placed into service on May 1, 2014 (see “–Recent Developments”). A planned expansion of the Stonewall plant to raise the processing capacity to 200 MMCFD is anticipated to be completed in the first quarter of 2015.

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WestOK. The WestOK system processes natural gas through three separate cryogenic natural gas processing plants at the Waynoka I and II and the Chester facilities; and one refrigeration plant at the Chaney Dell facility. The WestOK system’s processing operations have total name-plate capacity of approximately 458 MMCFD. Waynoka I, a 200 MMCFD plant located in Woods County, Oklahoma, began operations in 2006. Waynoka II, a 200 MMCFD cryogenic plant in Woods County, Oklahoma, began operations in September 2012. Chester, a 28 MMCFD plant located in Woodward County, Oklahoma, began operations in 1981. Chaney Dell, a 30 MMCFD plant in Woods County, Oklahoma, began operations in January 2012.

Natural Gas and NGL Marketing

SouthOK. The SouthOK system has access to natural gas take-away pipelines owned by Enable Oklahoma Intrastate Transmission, LLC; MarkWest Energy Partners, LP; Natural Gas Pipeline Company of America; ONEOK Gas Transportation, LLC; and Southern Star Central Gas Pipeline, Inc. We sell our NGL production at SouthOK to ONEOK under two separate agreements. The Velma agreement has a term expiring at the end of 2016, and the Arkoma agreement has a term expiring in 2024. We have signed an agreement with DCP to sell our NGL production from our Velma processing facilities upon the expiration of the Velma ONEOK agreement. The Velma DCP agreement has a term of fifteen years. Condensate collected at the SouthOK gas plants and gathering systems is currently sold to EnerWest Trading Company, LLC and Enterprise Products Partners, L.P.

WestOK. The WestOK system has access to natural gas take-away pipelines owned by Enogex LLC; Panhandle Eastern Pipe Line Company, LP; and Southern Star Central Gas Pipeline, Inc. We sell our NGL production at WestOK to DCP. The WestOK DCP agreement has a term expiring in 2029. Condensate collected at the WestOK plants and gathering systems is currently sold to JP Energy Partners, L.P.; Plains Marketing, L.P.; and Murphy Energy Corporation.

Our Texas Operations

Our Texas operations own, operate and/or have interests in seven natural gas processing facilities and approximately 4,600 miles of intrastate natural gas gathering systems located in Texas. Our Texas gathering systems and processing plants service long-lived natural gas regions, including the Permian Basin and the Barnett and Eagle Ford Shales. Our Texas systems have receipt points consisting primarily of individual well connections and, secondarily, central delivery points, which are linked to multiple wells from which we gather natural gas from oil and natural gas wells; process the raw natural gas into residue gas by extracting NGLs and removing impurities; and transport natural gas to interstate and public utility pipelines for delivery to customers.

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SouthTX. The SouthTX gathering system is located in the Eagle Ford Shale in southern Texas. The gathering system has approximately 800 miles of active pipeline with receipt points consisting primarily of individual well connections and, secondarily, central delivery points, which are linked to multiple wells. Our SouthTX assets also include a 75% interest in T2 LaSalle Gathering Company L.L.C. (“T2 LaSalle”), which has approximately 60 miles of active gathering pipeline; and a 50% interest in T2 Eagle Ford Gathering Company L.L.C. (together with T2 LaSalle, the “T2 Joint Ventures”), which has approximately 116 miles of active gathering pipeline. The T2 Joint Ventures are operated by a subsidiary of Southcross Holdings, L.P., which owns the remaining interests. The primary natural gas suppliers on the SouthTX gathering system include Statoil and Talisman.

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WestTX. The WestTX gathering system, which we operate and in which we have an approximate 72.8% ownership, has approximately 3,800 miles of active natural gas gathering pipelines located across nine counties within the Permian Basin in West Texas. Pioneer, the largest active driller in the Spraberry and Wolfberry Trends and a major producer in the Permian Basin, owns the remaining interest in the WestTX system. The primary natural gas suppliers on the WestTX gathering system include Parsley Energy, COG Operating, LLC; Laredo Petroleum, Inc.; Endeavor Energy Resources LP; and Pioneer.

Barnett. The Barnett Shale gas gathering system and related assets are located in Tarrant County, Texas. The system consists of 20 miles of gathering pipeline. The Barnett gas gathering system is used to facilitate gathering of the natural gas production of our affiliate, ARP.

Processing Plants

SouthTX. The SouthTX system processes natural gas through the Silver Oak I and II processing plants. The Silver Oak I facility is a 200 MMCFD cryogenic plant located in Bee County, Texas, which started operations in 2012. A second 200 MMCFD cryogenic processing facility, the Silver Oak II plant, was placed into service on June 25, 2014 (see “—Recent Developments”). Our SouthTX assets also include a 50% interest in T2 EF Cogeneration Holdings L.L.C., which owns a cogeneration facility.

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WestTX. The WestTX system includes five separate plants: the Consolidator, Driver, Midkiff, Benedum and Edward processing facilities. Our WestTX processing operations have an aggregate processing name-plate capacity of approximately 655 MMCFD. The Consolidator plant is a 150 MMCFD cryogenic plant in Reagan County, Texas, which started operations in 2009. The Driver plant is a 200 MMCFD cryogenic plant in Midland County, Texas, which started operations in April 2013. The Midkiff plant, which started operations in 1990, is a 60 MMCFD cryogenic plant located at the same site as our Consolidator plant. The Benedum plant is a 45 MMCFD cryogenic plant in Upton County, Texas that is currently idle. The Edward plant is a 200 MMCFD cryogenic plant located in Upton County, Texas, near the Benedum plant, which was brought into service on September 15, 2014 (see “–Recent Developments”). To facilitate increased Spraberry production, we are constructing a new 200 MMCFD cryogenic processing plant, known as the Buffalo plant, which is expected to be placed in service during 2016. The Buffalo plant will increase the WestTX aggregate processing name-plate capacity to approximately 855 MMCFD.

Natural Gas and NGL Marketing

SouthTX. Through its Section 311 intrastate transmission pipeline, the SouthTX system has access to natural gas take-away pipelines owned by Enterprise Intrastate, LLC; Kinder Morgan Tejas Pipeline LLC; Natural Gas Pipeline Company of America; Tennessee Gas Pipeline Company, LLC; and Transcontinental Gas Pipe Line. We sell our NGL production at SouthTX to DCP and Enlink Midstream Partners, LP. In September 2014, we signed an NGL agreement with DCP, which expires in 2029. Condensate collected at the SouthTX plants and gathering systems is currently sold to BP Products North America, Inc.; Cima Energy, LTD; Shell Trading (US) Company, Inc.; and Superior Crude Gathering, Inc.

WestTX. The WestTX system has access has access to natural gas take-away pipelines owned by Atmos Energy Corporation; El Paso Natural Gas Company; Kinder Morgan Tejas Pipeline, LLC; Enterprise Interstate, LLC; and Northern Natural Gas Company. In September 2014, we signed an NGL agreement with DCP, which expires in 2029. Condensate collected at the WestTX plants and gathering systems is currently sold to Occidental Energy Marketing, Inc. and Plains Marketing, L.P.

Corporate and Other

Tennessee Gathering System. The Tennessee gathering systems are located in the Appalachian Basin. The gathering systems have approximately 70 miles of natural gas gathering pipelines. A portion of the natural gas we gather in Tennessee is derived from wells operated by our affiliate, ARP. In addition, we gather and transport gas for other natural gas producers in the area.

On February 27, 2015, we agreed to transfer 100% of our interest in the Tennessee gas gathering assets to ARP (see “—Recent Developments”).

Gas Treating. Our gas treating facilities include fifteen skid-mounted amine treating plants of various sizes with total capacity of 1,262 GPM and two propane refrigeration plants with total capacity of 27 MMCFD. The plants are located in the Delaware Basin, Granite Wash, Haynesville, Eagle Ford, Woodford and Fayetteville Shale, or are in inventory awaiting deployment. Key customers include Crestwood Arkansas Pipeline, LLC; TPF II East Texas Gathering, LLC; and XTO. Revenues are derived from fee-based contract services and are a function of the capacity of the treating plant. Revenues are not directly dependent upon the value of the natural gas that is treated and thus commodity price risk is limited.

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Commodity Risk Management. Our gathering and processing operations are exposed to certain commodity price risks. These risks result from either taking title to natural gas, NGLs and condensate, or purchasing natural gas from certain producers at the wellhead. The amount and character of this price risk is a function of our contractual relationships with natural gas producers or, alternatively, a function of cost of sales. These contractual relationships are generally of two types:

• POP: requires us to pay a percentage of revenue to the producer. This generally results in our having a net long physical position for natural gas, NGLs and condensate.

• Wellhead or Keepwhole purchases: generally requires us to purchase natural gas and any resulting NGLs produced belong to us; resulting in a net long physical position for NGLs and a net short physical position for natural gas.

We are, therefore, exposed to price risk at a net equity volume level rather than at a revenue level. We manage the positions for natural gas on a net basis, netting our physical long positions against our physical short positions. Normally we are in a net long position on our natural gas.

We attempt to mitigate a portion of these risks through a commodity price risk management program, which employs a variety of financial tools. The resulting combination of the underlying physical business and the commodity price risk management program attempts to convert the physical price environment that consists of floating prices to a risk-managed environment characterized by: (1) using fixed-for-floating swaps, which result in a fixed price for the products we buy or sell; or (2) by utilizing the purchase of put options, which result in floor prices for the products we buy. We utilize NGL and crude oil swaps and options to manage our NGL and condensate price risks and natural gas swaps and options to manage our natural gas price risks. There are also risks inherent within risk management programs, including, among others, deterioration of the price relationship between the physical and financial instrument; and changes in projected physical volumes.

We generally realize gains and losses from the settlement of our derivative instruments at the same time we sell the associated physical residue gas, NGLs or condensate. We also record the unrealized gains and losses for the mark-to-market valuation of derivative instruments prior to settlement. We determine gains or losses on open and closed derivative transactions as the difference between the derivative contract price and the physical price. This mark-to-market methodology uses (1) daily closing New York Mercantile Exchange (“NYMEX”) prices; (2) third party sources; and/or (3) an internally-generated algorithm, utilizing third party sources, for commodities not traded on an open market. To ensure these derivative instruments will be used solely for managing price risks and not for speculative purposes, we have established a committee to review our derivative instruments for compliance with our policies and procedures.

For additional information on our derivative activities, please see “Item 7A: Quantitative and Qualitative Disclosures About Market Risk.”

Competition

Acquisitions. We have encountered competition in acquiring midstream assets owned by third parties. In several instances, we submitted bids in auction situations and in direct negotiations for the acquisition of such assets and we were either outbid by others or we were unwilling to meet the sellers’ expectations. In the future, we expect to encounter equal, if not greater, competition for the acquisition of midstream assets.

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Oklahoma. In our Oklahoma segment, we compete for the acquisition of well connections with several other gathering/processing operations. These operations include plants and gathering systems operated by: Caballo Energy, LLC; DCP Midstream Partners, LLC; Enable Midstream Partners, L.P.; Energy Transfer Partners, L.P.; Kinder Morgan Energy Partners, L.P.; Lumen Midstream Partners, LLC; Mustang Fuel Corporation; ONEOK Field Services Company, LLC; SemGas, L.P.; and Superior Pipeline Company, LLC.

Texas. In our Texas segment, we compete for the acquisition of well connections with several other gathering/processing operations. These operations include plants and gathering systems operated by: DCP Midstream Partners, LP; Energy Transfer Partners, L.P.; Enlink Midstream Partners, LP; Enterprise Products Partners, L.P.; Kinder Morgan Energy Partners, L.P.; Southcross Energy Partners, L.P.; Southern Union Company; Targa Resources Partners LP; and West Texas Gas, Inc.

We believe the principal factors upon which competition for new well connections is based are:

• the price received by an operator or producer for its production after deduction of allocable charges, principally the use of the natural gas to operate compressors;

• the quality and efficiency of the gathering systems and processing plants that will be utilized in delivering the gas to market;

• the access to various residue markets that provides flexibility for producers and ensures the gas will make it to market; and

• the responsiveness to a well operator’s needs, particularly the speed at which a new well is connected by the gatherer to its system.

We believe we have good relationships with operators connected to our system and that we present an attractive alternative for producers. However, if we cannot compete successfully through pricing or services offered, we may be unable to obtain new well connections.

In our Corporate and Other segment, we compete for gas treating services provided on gas gathering lines, including gas treating services provided by Kinder Morgan Energy Partners, L.P.; Spartan Energy Partners LLC; and TransTex Hunter, LLC.

The factors that typically affect our ability to compete for gas treating services are:

• fees charged under our contracts;

• the quality and efficiency of our operations; and

• our responsiveness to a customer’s needs.

Seasonality

Our business is affected by seasonal fluctuations in commodity prices. Sales volumes are also affected by various factors such as fluctuating and seasonal demands for products and variations in weather patterns from year to year. Generally, natural gas demand increases during the winter months and decreases during the summer months. Freezing conditions can disrupt our gathering process, which could adversely affect our operating results.

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Environmental Matters and Regulations

The operation of pipelines, plant and other facilities for gathering, compressing, treating, processing, or transporting natural gas, NGLs and other products is subject to stringent and complex laws and regulations pertaining to health, safety and the environment. As an owner or operator of these facilities, we must comply with these laws and regulations at the federal, state and local levels. These laws and regulations can restrict or impact our business activities in many ways, such as by:

• restricting the way waste disposal is handled;

• limiting or prohibiting construction and operating activities in sensitive areas such as wetlands, coastal regions, non-attainment areas, tribal lands or areas inhabited by endangered species;

• requiring the installation and operation of expensive pollution control equipment;

• requiring remedial measures to reduce, and/or respond to releases of pollutants or hazardous substances by our operations or attributable to former operators;

• enjoining some or all of the operations of facilities deemed in non-compliance with permits issued pursuant to such environmental laws and regulations; and

• imposing substantial liabilities for pollution resulting from operations.

Failure to comply with these laws and regulations may result in the assessment of administrative, civil or criminal penalties, the imposition of remedial requirements, and the issuance of orders enjoining future operations. Certain environmental statutes impose strict, joint and several liability for costs required to clean up and restore sites where pollutants or wastes have been disposed or otherwise released. Neighboring landowners and other third parties can file claims for personal injury or property damage allegedly caused by noise and/or the release of pollutants or wastes into the environment. The regulatory burden on the natural gas and oil industry increases the cost of doing business in the industry and consequently affects profitability. Additionally, Congress, federal and state agencies frequently enact new, or revise existing, environmental laws and regulations that may result in more stringent and costly waste handling, disposal and clean-up requirements for the natural gas and oil industry, which could have a significant impact on our operating costs.

We believe our operations are in substantial compliance with applicable environmental laws and regulations and compliance with existing federal, state and local environmental laws and regulations and continued compliance therewith should not have a material adverse effect on our business, financial position or results of operations. Nevertheless, the trend in environmental regulation is to place more restrictions and limitations on activities that may affect the environment. As a result, there can be no assurance as to the amount or timing of future expenditures for environmental compliance or remediation, and actual future expenditures may be different from the amounts we currently anticipate. Moreover, we cannot ensure that future events, such as changes in existing laws, the promulgation of new laws, or the development or discovery of new facts or conditions, will not cause us to incur significant costs.

Environmental laws and regulations that could have a material impact on our operations include the following:

Endangered Species Act. The federal Endangered Species Act (“ESA”) restricts activities that may affect endangered or threatened species or their habitats. Endangered species, including, without limitation, the American Burying Beetle and Lesser Prairie Chicken, are located in various states in which we operate. If endangered species are located in areas where we propose to construct new gathering or

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processing facilities, such work could be prohibited or delayed or expensive mitigation may be required. Existing laws, regulations, policies and guidance relating to protected species may also be revised or reinterpreted in a manner that further increases our construction and mitigation costs or further restricts our construction activities. Additionally, construction and operational activities could result in inadvertent impact to habitats of listed species and could result in alleged takings under the ESA, exposing us to civil or criminal enforcement actions and fines or penalties. Moreover, as a result of a settlement approved by the U.S. District Court for the District of Columbia in September 2011, the U.S. Fish and Wildlife Service is required to make a determination on listing of more than 250 species as endangered or threatened under the ESA by completion of the agency’s 2017 fiscal year. The designation of previously unprotected species as threatened or endangered in areas where we conduct operations or plan to construct pipelines or facilities could cause us to incur increased costs arising from species protection measures or could result in delays in the construction of our facilities or limitations on our customer’s exploration and production activities, which could have an adverse impact on demand for our midstream operations.

Risk Management Planning. The Environmental Protection Agency (“EPA”), in conjunction with the Occupational Safety and Health Administration (“OSHA”) and the U.S. Department of Homeland Security (“DHS”), in response to numerous recent industrial facility explosions, has initiated a nation-wide Request for Information (“RFI”), with the intent of strengthening the existing Chemical Accident Prevention Provisions (40 CFR 68). The EPA has indicated that rule changes will be forthcoming based upon results of the RFI. If implemented, such changes have the potential to impact our gas plants by defining more rigorous design standards, regulating siting of new processes, requiring installation of automated detection devices and implementing mandatory third-party audits.

Hazardous Waste. The Solid Waste Disposal Act, including the Resource Conservation and Recovery Act (“RCRA”), and comparable state statutes regulate the generation, transportation, treatment, storage, disposal and cleanup of “hazardous wastes” and the disposal of non-hazardous wastes. Under the auspices of the EPA, individual states administer some or all of the provisions of the RCRA, sometimes in conjunction with their own more stringent requirements. Drilling fluids, produced waters, and most of the other wastes associated with the exploration, development, and production of crude oil and natural gas constitute “solid wastes”, which are regulated under the less stringent non-hazardous waste provisions, but there is no guarantee that the EPA or individual states will not adopt more stringent requirements for the handling of non-hazardous wastes or categorize some non-hazardous wastes as hazardous for future regulation. Moreover, ordinary industrial wastes such as paint wastes, waste solvents, laboratory wastes, and waste compressor oils may be regulated as solid waste. The transportation of natural gas in pipelines may also generate some hazardous wastes that are subject to RCRA or comparable state law requirements.

We believe our operations are currently in substantial compliance with the requirements of RCRA and related state and local laws and regulations, and that we hold all necessary and up-to-date permits, registrations and other authorizations to the extent our operations require them under such laws and regulations. Although we do not believe the current costs of managing our solid wastes to be material, any more stringent regulation of natural gas and oil exploration and production wastes could increase our costs to manage and dispose of such wastes.

Site Remediation. The Comprehensive Environmental Response, Compensation and Liability Act (“CERCLA”), also known as the “Superfund” law, imposes joint and several liability, without regard to fault or legality of conduct, on persons who are considered under the statute to be responsible for the release of a “hazardous substance” into the environment. These persons include the owner or operator of the site where the release occurred and companies that disposed or arranged for the disposal of the hazardous substance at the site. Under CERCLA, such persons may be liable for the costs of cleaning up

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the hazardous substances that have been released into the environment, for damages to natural resources and for the costs of certain health studies. In addition, it is not uncommon for neighboring landowners and other third parties to file claims for personal injury and property damage allegedly caused by the hazardous substances released into the environment.

We currently own or lease, and have in the past owned or leased, numerous properties that for many years were used for the measurement, gathering, field compression and processing of natural gas. Although we believe we utilized operating and waste disposal practices that were standard in the industry at the time, hazardous substances, wastes or hydrocarbons may have been released on or under the properties owned or leased by us or on or under other locations, including off-site locations, where such substances have been taken for disposal. There may be evidence that petroleum spills or releases have occurred at some of the properties owned or leased by us. However, none of these spills or releases appear to be material to our financial condition and we believe all of them have been or will be appropriately remediated. In addition, some of these properties have been operated by third parties or by previous owners or operators whose treatment and disposal of hazardous substances, wastes or hydrocarbons were not under our control. These properties and the substances disposed or released on them may be subject to CERCLA, RCRA and analogous state laws. Under such laws, we could be required to remove previously disposed substances and wastes (including waste disposed of by prior owners or operators), remediate contaminated property (including groundwater contamination, whether from prior owners or operators or other historic activities or spills), or perform operations to prevent future contamination.

Air Emissions. Our operations are subject to the federal Clean Air Act, as amended and comparable state laws and regulations. These laws and regulations regulate emissions of air pollutants from various industrial sources, including our processing plants, certain storage vessels and compressor stations, and also impose various monitoring and reporting requirements. Such laws and regulations may require us to obtain pre-approval for the construction or modification of certain projects or facilities expected to produce air emissions or result in the increase of existing air emissions, obtain and comply with air permits containing various emissions and operational limitations, or utilize specific emission control technologies to limit emissions. These laws and regulations also apply to entities that use natural gas as fuel, and may increase the costs of customer compliance to the point where demand for natural gas is affected. Various air quality regulations are periodically reviewed by the EPA and are amended as deemed necessary. The EPA may also issue new regulations based on changing environmental concerns.

In 2012, specific federal regulations applicable to the natural gas industry were finalized under the New Source Performance Standards (“NSPS”) program along with National Emissions Standards for Hazardous Air Pollutants (“NESHAP”). These regulations impose additional emissions control requirements and practices on our operations. Some of our facilities may incur additional capital costs in order to comply with new emission limitations. These regulations may increase the costs of compliance for some facilities. Our failure to comply with these requirements could subject us to monetary penalties, injunctions, conditions or restrictions on operations, and potentially criminal enforcement actions. We believe our operations are in substantial compliance with the requirements of the Clean Air Act.

In 2014, the EPA proposed to lower the current ozone National Ambient Air Quality Standards (“NAAQS”) to a more stringent NAAQS. The EPA is required to promulgate the ozone NAAQS by court order no later than October 1, 2015. If lowered, the more stringent ozone NAAQS could impose additional permitting and regulatory requirements on major new facilities and facility expansions as well as existing facilities. These requirements could increase the cost of compliance at our facilities and other industrial sources in future years.

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While we will likely be required to incur certain capital expenditures in the future for air pollution control equipment in connection with obtaining and maintaining operating permits and approvals for air emissions, we believe our operations will not be materially adversely affected by such requirements, and the requirements are not expected to be any more burdensome to us than other similarly situated companies.

Water Discharges. The Federal Water Pollution Control Act, also known as the Clean Water Act, and analogous state laws impose restrictions and strict controls on the discharge of pollutants, including produced waters and other natural gas and oil wastes, into navigable waters of the United States. The discharge of pollutants into regulated waters is prohibited, except in accordance with the terms of a permit issued by EPA or the relevant state. These permits may require pretreatment of produced waters before discharge. Compliance with such permits and requirements may be costly. The Clean Water Act also prohibits the discharge of dredge and fill material in regulated waters, including wetlands, unless authorized by a permit issued by the U.S. Army Corps of Engineers. The Clean Water Act also requires specified facilities to maintain and implement spill prevention, control and countermeasure plans and to take measures to minimize the risks of petroleum spills. Federal and state regulatory agencies can impose administrative, civil and criminal penalties for failure to obtain a permit or non-compliance with discharge permits or other requirements of the federal Clean Water Act and analogous state laws and regulations. We believe our operations are in substantial compliance with the requirements of the Clean Water Act.

OSHA and other regulations. We are subject to the requirements of OSHA and comparable state statutes. The OSHA hazard communication standard, the EPA community right-to-know regulations under Title III of CERCLA and similar state statutes require that we organize and/or disclose information about hazardous materials used or produced in our operations. We believe we are in substantial compliance with these applicable requirements and with other OSHA and comparable requirements.

Hydrogen Sulfide. Exposure to gas containing high levels of hydrogen sulfide, referred to as sour gas, is harmful to humans and can result in death. A portion of the gas processed at our Velma gas plant contains high levels of hydrogen sulfide, and we employ numerous safety precautions at the system to ensure the safety of our employees. There are various federal and state environmental and safety requirements for handling sour gas, and we believe we are in substantial compliance with such requirements.

Chemicals of Interest. We operate several facilities registered with DHS in order to identify the quantities of various chemicals stored at the sites. The liquid hydrocarbons recovered and stored as a result of facility processing activities, and various chemicals utilized within the processes, have been identified and registered with DHS. These registration requirements for Chemical of Interest were first promulgated by DHS in 2008 and we believe we are currently in substantial compliance with the Department’s requirements. None of our affected facilities are considered high security risks by DHS at this time and no specific security plans for such per DHS regulations are required.

Greenhouse gas regulation and climate change. To date, legislative and regulatory initiatives relating to greenhouse gas emissions have not had a material impact on our business. However, Congress has been actively considering climate change legislation. More recently, the EPA has begun regulating greenhouse gas emissions under the federal Clean Air Act. In response to the Supreme Court’s decision in Massachusetts V. EPA, 549 U.S. 497 (2007) (holding that greenhouse gases are air pollutants covered by the Clean Air Act), the EPA made a final determination that greenhouse gases endangered public health and welfare, 74 Fed. Reg. 66,496 (December 15, 2009). This finding led to the regulation of greenhouse gases under the Clean Air Act. Currently, the EPA has promulgated two rules that will impact our business.

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First, the EPA promulgated the so-called “Tailoring Rule” which established emission thresholds for greenhouse gases under the Clean Air Act permitting programs, 75 Fed. Reg. 31514 (June 3, 2010). Both the federal preconstruction review program (Prevention of Significant Deterioration, or PSD) and the operating permit program (Title V) are now implicated by emissions of greenhouse gases. These programs, as modified by the Tailoring Rule, could require some new facilities to obtain a PSD permit depending on the size of the new facilities. Likewise, existing facilities could be required to obtain a PSD permit if modification projects are significant. In addition, existing facilities as well as new facilities that exceed the emissions thresholds could be required to obtain Title V operating permits.

Second, the EPA finalized its Mandatory Reporting of Greenhouse Gases rule in 2009, 74 Fed. Reg. 56,260 (October 30, 2009). Subsequent revisions, additions, and clarification rules were promulgated, including a rule specifically addressing the natural gas industry. These rules require certain industry sectors that emit greenhouse gases above a specified threshold to report greenhouse gas emissions to the EPA on an annual basis. This rule imposes additional obligations on us to determine whether the greenhouse gas reporting applies and if so, to calculate and report greenhouse gas emissions. This rule also imposes monitoring and sampling requirements upon our gas processing plants via the use of expensive instruments. In 2014, EPA proposed regulations that could expand such requirements to compressor stations, which have previously been exempt from these types of monitoring requirements. If finalized, these requirements could increase cost of operation at our compressor stations in future years.

On January 14, 2015, the EPA announced its intent to set new standards for the regulation of Methane and Volatile Organic Compounds emissions in the oil and gas sector. It is anticipated that these standards will be built upon the 2012 New Source Performance Standards for the oil and gas sector and the EPA is aiming to finalize the rulemaking in 2016. The EPA has indicated the rule could address emissions from new and modified oil and gas production sources, and natural gas processing and transmission sources.

There are also ongoing legislative and regulatory efforts to encourage the use of cleaner energy technologies. While natural gas is a fossil fuel, it is considered to be more benign, from a greenhouse gas standpoint, than other carbon-based fuels, such as coal or oil. Thus future regulatory developments could have a positive impact on our business to the extent that they either decrease the demand for other carbon-based fuels or position natural gas as a favored fuel.

In addition to domestic regulatory developments, the United States is a participant in multi-national discussions intended to deal with the greenhouse gas issue on a global basis. To date, those discussions have not resulted in the imposition of any specific regulatory system, but such talks are continuing and may result in treaties or other multi-national agreements that could have an impact on our business. Currently, some scientific and international organizations believe that methane, a greenhouse gas inadvertently emitted from our operations, has a higher global warming potential than previously recognized. The EPA may amend regulations to reflect this change. If so, the change would make it more likely that some of our operations would be subject to PSD and Title V permitting requirements.

Finally, the scientific community continues to engage in a healthy debate as to the impact of greenhouse gas emissions on planetary conditions. For example, such emissions may be responsible for increasing global temperatures, and/or enhancing the frequency and severity of storms, flooding and other similar adverse weather conditions. We do not believe these conditions are having any material current adverse impact on our business, and we are unable to predict at this time, what, if any, long-term impact such climate effects would have.

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Pipeline Safety and Other Regulations

Pipeline Safety. Some of our natural gas pipelines are subject to regulation by the U.S. Department of Transportation, or DOT, under the pipeline safety laws, 49 U.S.C. §§ 60101 et seq. The pipeline safety laws authorize DOT to regulate pipeline facilities and persons engaged in the transportation by pipeline of gas, i.e., natural gas, flammable gas, or gas that is toxic or corrosive, and hazardous liquids, i.e., petroleum or petroleum products, including NGLs, and other designated substances that pose an unreasonable risk to life or property when transported in liquid state. The DOT Secretary has delegated that authority to one of the Department’s modal administrations, the Pipeline and Hazardous Materials Safety Administration, or PHMSA. Acting primarily through the Office of Pipeline Safety, or OPS, PHMSA administers a national regulatory program to ensure the safety of transportation-related gas and hazardous liquid pipeline facilities.

As part of that national program, PHMSA has established minimum federal safety standards for the design, construction, testing, operation, and maintenance of gas and hazardous liquid pipeline facilities. These safety standards apply to most pipeline facilities in the United States, including gathering lines, transmission lines, and distribution lines, and are the only safety requirements that apply to interstate pipeline facilities. PHMSA has also promulgated a series of reporting requirements for operators of gas and hazardous liquid pipeline facilities, as well as provisions for establishing the qualification of pipeline personnel and requirements for managing the integrity of gas transmission and distribution lines and certain hazardous liquid pipelines. To ensure compliance with these provisions, OPS performs pipeline safety inspections and has the authority to initiate enforcement actions, which can lead to the assessment of administrative civil penalties of up to $200,000 per day, per violation, not to exceed $2,000,000 for any related series of violations.

PHMSA also oversees a program that allows the states to submit an annual certification to regulate intrastate pipeline facilities. States that participate in the program can apply additional or more stringent safety standards to the pipeline facilities under their certifications, so long as those standards are compatible with the minimum federal requirements. States can also enter into agreements with PHMSA to participate in the oversight of intrastate or interstate pipelines, primarily by performing inspections for compliance with preemptive federal safety standards. The Kansas Corporation Commission, the Oklahoma Corporation Commission, and the Texas Railroad Commission all participate in the federal gas pipeline safety program and have certification to regulate intrastate gas pipeline facilities. The Oklahoma Corporation Commission and the Texas Railroad Commission also have certification to regulate intrastate hazardous liquid pipeline facilities.

Our operations are required to permit access to and allow copying of records and to make certain reports and provide information as required by the Secretary of Transportation and appropriate state authorities. We believe our pipeline operations are in substantial compliance with the federal pipeline safety laws and regulations and any state laws and regulations that apply to our pipeline facilities. However, due to the possibility of new or amended laws and regulations or reinterpretation of existing laws and regulations, the activities needed to ensure future compliance could result in additional costs.

On January 3, 2012, the Pipeline Safety, Regulatory Certainty, and Job Creation Act of 2011 (the “Job Act”) was signed into law. The Job Act requires DOT and the U.S. Government Accountability Office to complete a number of reviews, studies, evaluations and reports in preparation for potential rulemakings applicable to pipeline facilities. The issues addressed in these rulemaking provisions include, but are not limited to, the use of automatic or remotely-controlled shut-off valves on new or replaced transmission line facilities, modifying the requirements for pipeline leak detection systems, and expanding the scope of the pipeline integrity management requirements. The PHMSA is considering these and other provisions in the Job Act and has sought public comment on changes to a number of regulations related to pipeline safety. On September 25, 2013, the PHMSA issued a final rule

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implementing changes in its administrative procedures required by the Job Act, but the rulemaking process is continuing with respect to aspects of the Job Act related to pipeline safety regulations. At this time, we cannot predict what effect, if any, the future application of such regulations might have on our operations, but we, as part of the midstream natural gas industry, could be required as a result of any new PHMSA regulations to incur additional capital expenditures and increased operating costs.

The state of Texas adopted House Bill 2982, effective on September 1, 2013. This bill amended the Texas laws delegating to the Texas Railroad Commission the authority to regulate pipeline safety for intrastate pipelines to include transportation and gathering facilities for gas in Class 1 locations and for hazardous liquids and CO² in rural locations. Before September 1, 2015, the Texas Railroad Commission must implement rules governing the commission investigations of an accident, an incident, threats to public safety, and complaints related to operational safety; and to require an operator to submit a plan to remediate any such issues and to file reports with respect to any such issues, or to require operators to provide information requested by the Texas Railroad Commission.

Gathering Pipeline Regulation. Section 1(b) of the Natural Gas Act of 1938, 15 U.S.C. § 717(b), exempts natural gas gathering facilities from the jurisdiction of FERC. We own a number of natural gas gathering lines in Kansas, Oklahoma and Texas that we believe meet the traditional tests FERC has used to establish a pipeline’s status as a gathering facility not subject to FERC jurisdiction. However, the distinction between FERC-regulated natural gas transportation facilities and federally unregulated natural gas gathering facilities is the subject of regular litigation, so the classification and regulation of some of our gathering facilities may be subject to change based on future determinations by FERC and the courts.

We are currently subject to state ratable take, common purchaser and/or similar statutes in one or more jurisdictions in which we operate. Common purchaser statutes generally require gatherers to purchase production without discrimination as to source of supply or producer, while ratable take statutes generally require gatherers to take, without undue discrimination, natural gas production that may be tendered to the gatherer for handling. In particular, Kansas, Oklahoma and Texas have adopted complaint-based regulation of natural gas gathering activities, which allows natural gas producers and shippers to file complaints with state regulators in an effort to resolve grievances relating to natural gas gathering access and discrimination with respect to rates or terms of service. Should a complaint be filed or regulation by the Kansas Corporation Commission, the Oklahoma Corporation Commission or the Texas Railroad Commission become more active, our revenues could decrease. Collectively, any of these laws may restrict our right as an owner of gathering facilities to decide with whom we contract to purchase or gather natural gas.

Our gathering operations could be adversely affected should they be subject in the future to the application of state or federal regulation of rates and services. Our gathering operations also may be, or may become, subject to safety and operational regulations relating to the design, installation, testing, construction, operation, replacement and management of gathering facilities. Additional rules and legislation pertaining to these matters are considered and adopted from time to time. We cannot predict what effect, if any, such changes might have on our operations, but the industry could be required to incur additional capital expenditures and increased costs depending on future legislative and regulatory changes.

Transmission Pipeline Regulation. We operate natural gas pipelines that extend from some of our processing plants to interconnections with both intrastate and interstate natural gas pipelines. Those facilities, known in the industry as “plant tailgate” pipelines, typically operate at transmission pressure levels and may transport “pipeline quality” natural gas. Because our plant tailgate pipelines are relatively short, we treat them as “stub” lines, which are exempt from FERC’s jurisdiction under the Natural Gas Act. FERC’s treatment of the “stub” line exemption has varied over time, but, absent other factors, FERC generally limits the length of the lines that qualify for the “stub” line exemption.

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We own (in conjunction with Pioneer) and operate the Driver Residue Pipeline, a gas transmission pipeline extending from our Driver processing plant in WestTX just over ten miles to points of interconnection with intrastate and interstate natural gas transmission pipelines. We have obtained a limited jurisdiction certificate of public convenience and necessity under the Natural Gas Act for the Driver Residue Pipeline. In the certificate order, among other things, FERC waived requirements pertaining to the filing of an initial rate for service, the filing of a tariff and compliance with specified accounting and reporting requirements. As such, the Driver Residue Pipeline is not currently subject to conventional rate regulation; to requirements FERC imposes on “open access” interstate natural gas pipelines; to the obligation to file and maintain a tariff; or to the obligation to conform to certain business practices and to file certain reports. If, however, we were to receive a bona fide request for firm service on the Driver Residue Pipeline from a third party, FERC would reexamine the waivers it has granted us and would require us to file for authorization to offer “open access” transportation under its regulations, which would impose additional costs upon us.

To the extent our plant tailgate pipelines do not qualify for the “stub” line exemption, we will consider whether we need to obtain FERC authorization to operate our tailgate pipelines or whether they can be reconfigured or otherwise modified to eliminate the possibility that they could be subject to FERC jurisdiction. If we conclude that FERC authorization is necessary, we would expect to seek regulatory treatment similar to the treatment FERC has accorded to the Driver Residue Pipeline. We cannot, however, assure you that FERC would agree to assert only limited jurisdiction. If FERC were to find that it must assert comprehensive jurisdiction, our operating costs would increase and we could be subject to enforcement actions under the Energy Policy Act of 2005.

We have an ownership interest of 50% of the capacity in a 50-mile long intrastate natural gas transmission pipeline, which extends from the tailgate of three natural gas processing plants located near Pettus, Texas to interconnections with existing intrastate and interstate natural gas pipelines near Refugio, Texas. The capacity is held by our subsidiary, APL SouthTex Transmission Company LP (“APL SouthTex Transmission”), which is entitled to transport natural gas through its capacity on behalf of third parties to both intrastate and interstate markets. Because the jointly owned pipeline system was initially interconnected only with intrastate markets, each of the capacity holders qualified as an “intrastate pipeline” within the meaning of the Natural Gas Policy Act of 1978, or the NGPA and therefore are able to provide transportation of natural gas to interstate markets under Section 311 of the NGPA. Under Sections 311 and 601 of the NGPA, an intrastate pipeline may transport natural gas in interstate commerce without becoming subject to FERC regulation as a “natural-gas company” under the Natural Gas Act. Transportation of natural gas under authority of Section 311 must be filed with FERC and must be shown to be “fair and equitable.” APL SouthTex Transmission has a Statement of Operating Conditions on file with FERC, and FERC has accepted the rates, which APL SouthTex Transmission’s predecessor filed, as being in accordance with the “fair and equitable” standard. APL SouthTex Transmission is required to file, on or before November 6, 2017, a petition for approval of its then-existing rates, or to propose a new rate, applicable to NGPA Section 311 service.

NGL Pipeline Regulation. The transportation of crude oil, petroleum products and NGLs is subject in certain circumstances to regulation under the Interstate Commerce Act. Responsibility for the regulation of so-called oil pipelines now resides with the FERC. Rates charged for the interstate movement of crude oil, petroleum products and NGLs must be filed with FERC and are subject to FERC review and, under the Interstate Commerce Act, FERC has exclusive jurisdiction to determine whether oil pipelines’ interstate rates and terms of service are just, reasonable, and not unduly discriminatory. Pursuant to the Interstate Commerce Act, interstate oil pipeline rates can be challenged before FERC

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either by protest when they are initially filed or increased or by complaint for as long as they remain on file with FERC. FERC does not, however, regulate oil pipelines’ decisions to commence or terminate service or the construction of oil pipeline facilities. Individual states may regulate oil pipelines as utilities or as common carriers. As a general rule, neither FERC nor the states regulate oil pipelines that are purely proprietary and provide transportation service only for the pipeline’s owner.

The Oklahoma Corporation Commission and Texas Railroad Commission both have authority to regulate rates charged by common carrier pipelines in their respective jurisdictions.

Transportation and Sales of Natural Gas and NGLs. A portion of our revenue is tied to the price of natural gas and NGLs. The wholesale price of natural gas and NGLs is not currently subject to federal regulation and, for the most part, is not subject to state regulation. Sales of natural gas and NGLs are affected by the availability, terms and cost of pipeline transportation. As noted above, the price and terms of access to pipeline transportation of natural gas and NGLs are subject to extensive federal and state regulation. FERC is continually proposing and implementing new rules and regulations affecting the segments of the natural gas industry, most notably interstate natural gas transportation companies that remain subject to FERC’s jurisdiction. While FERC is less active in proposing changes in the manner in which it regulates the transportation of NGLs under the Interstate Commerce Act, it does nevertheless have authority to address the rates, terms and conditions under which NGLs are transported. FERC initiatives could, therefore, affect the transportation of natural gas and NGLs under certain circumstances. We cannot predict the ultimate impact of any regulatory changes that could result from such FERC initiatives.

Energy Policy Act of 2005. The Energy Policy Act contains numerous provisions relevant to the natural gas industry and to interstate natural gas pipelines in particular. Overall, the legislation attempts to increase supply sources by calling for various studies of the overall resource base and attempting to advantage deep water production on the Outer Continental Shelf in the Gulf of Mexico. However, the provisions of primary interest to us as an operator of natural gas gathering lines and sellers of natural gas focus on two areas: (1) infrastructure development; and (2) market transparency and enhanced enforcement. Regarding infrastructure development, the Energy Policy Act shortens the depreciable life for gathering facilities; statutorily designates FERC as the lead agency for environmental reviews required in connection with federal authorizations and permits relating to interstate natural gas pipelines; provides for the assembly of a consolidated record for all federal decisions relating to necessary authorizations and permits with respect to interstate natural gas pipelines; and provides for expedited judicial review of any agency action involving the permitting of such facilities and review by only the D.C. Circuit Court of Appeals of any alleged failure of a federal agency to act on a permit relating to an interstate natural gas pipeline by a deadline set by FERC as lead agency. Regarding market transparency and manipulation, the Energy Policy Act amended the Natural Gas Act to prohibit market manipulation and directs FERC to prescribe rules designed to encourage the public provision of data and reports regarding the price of natural gas in wholesale markets. In this regard, the Natural Gas Act and the Natural Gas Policy Act were also amended to increase monetary criminal penalties to $1,000,000 from the $5,000 amount specified under prior law and to add and increase civil penalty authority to be administered by FERC to $1,000,000 per day per violation without any limitation as to total amount.

Our Driver Residue Pipeline is subject to only limited regulation by FERC under the Natural Gas Act. Our APL SouthTex Transmission pipeline is subject to limited regulation of the interstate transportation services it provides under Section 311 of the NGPA. Accordingly, the provisions of the Energy Policy Act have only limited applicability to us, primarily in our capacity as a seller of natural gas, as the operator of interstate natural gas pipelines subject to limited jurisdiction certificates, and as operator of an intrastate natural gas pipeline offering interstate service under Section 311 of the NGPA. As such, we are subject to the Energy Policy Act as the owner of facilities, and thus we are subject to

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(1) civil penalties for violations of the Natural Gas Act; (2) the NGPA or FERC regulations or orders issued under those laws; and (3) for conduct determined to constitute market manipulation. The penalties associated with any violations of the Energy Policy Act could be substantial.

Other regulation of the natural gas and oil industry. The natural gas and oil industry is extensively regulated by numerous federal, state and local authorities. Legislation affecting the natural gas and oil industry is under constant review for amendment or expansion, frequently increasing the regulatory burden that operators must bear. Also, numerous departments and agencies, both federal and state, are authorized by statute to issue rules and regulations binding on the natural gas and oil industry and its individual members, some of which carry substantial penalties for failure to comply. Although the regulatory burden on the natural gas and oil industry increases our cost of doing business and, consequently, affects our profitability, these burdens generally do not affect us any differently or to any greater or lesser extent than they affect other companies in their industries with similar types, quantities and locations of production.

Legislation continues to be introduced in Congress and development of regulations continues in the Department of Homeland Security and other agencies concerning the security of industrial facilities, including natural gas and oil facilities. Our operations may be subject to such laws and regulations. Presently, it is not possible to accurately estimate the potential costs to comply with any such facility security laws or regulations, but such expenditures could be substantial.

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Properties

Our principal facilities consist of 17 natural gas processing plants; 18 gas treating facilities; and approximately 12,300 miles of active 2 inch to 30 inch diameter natural gas gathering lines. Substantially all our gathering systems are constructed within rights-of-way granted by property owners named in the appropriate land records. In a few cases, property for gathering system purposes was purchased in fee. All our compressor stations are located on property owned in fee or on property obtained via long-term leases or surface easements.

The following tables set forth certain information relating to our gas processing facilities, and natural gas gathering systems:

Gas Processing Facilities

Facility	Location	Year Constructed		Design Throughput Capacity (MMCFD)		2014 Average Utilization Rate
Atoka plant (idle)	Atoka County, OK		2006		20
Coalgate plant	Coal County, OK		2007		80
Stonewall plant	Coal County, OK		2014		160
Tupelo plant	Coal County, OK		2011		120
Velma plant	Stephens County, OK		Updated 2003		100
Velma V-60 plant	Stephens County, OK		2012		60
Total SouthOK					540		76	%(1)
Waynoka I plant	Woods County, OK		2006		200
Waynoka II plant	Woods County, OK		2012		200
Chaney Dell plant	Major County, OK		2012		30
Chester plant	Woodward County, OK		1981		28
Total WestOK					458		100	%(1)
Total Oklahoma					998		95	%(1)
Consolidator plant	Reagan County, TX		2009		150
Driver plant	Midland County, TX		2013		200
Midkiff plant	Reagan County, TX		1990		60
Benedum plant (idle)	Upton County, TX		Updated 1981		45
Edward plant	Upton County, TX		2014		200
Total WestTX					655		70	%
Silver Oak I	Bee County, TX		2012		200
Silver Oak II	Bee County, TX		2014		200
Total SouthTX					400		30	%
Total Texas					1,055		55	%
Total					2,053		75	%(1)

(1) Certain processing facilities in these business units are capable of processing more than their name-plate capacity and when capacity is exceeded we will off-load volumes to other processors, as needed. The calculation of the total average utilization rate for the year includes these off-loaded volumes.

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Of the 18 gas treating facilities we own, 17 are held for use to provide contract treating services to natural gas producers located in Arkansas, Louisiana, Oklahoma and Texas. Two of our contract gas treating facilities are refrigeration facilities and the other 15 are amine facilities. The remaining treating facility is a 250 GPM amine treating plant, which is used in our processing operations in the SouthOK system and is included in the Oklahoma segment. Our 17 contract gas treating facilities are included in the Corporate and Other segment.

Natural Gas Gathering Systems

System	Location	Approximate Active Miles of Pipe
SouthOK	Southern Oklahoma and Northern Texas		1,500
WestOK	North Central Oklahoma and Southern Kansas		6,100
Total Oklahoma			7,600
SouthTX	Southern Central Texas		800
WestTX	West Texas		3,800
Barnett Shale	Central Texas		20
Total Texas			4,620
Tennessee	Tennessee		70
Total			12,290

Our property or rights-of-way are subject to encumbrances, restrictions and other imperfections. These imperfections have not materially interfered, and we do not expect they will materially interfere, with the conduct of our business. In many instances, lands over which rights-of-way have been obtained are subject to prior liens, which have not been subordinated to the rights-of-way grants. In a few instances, our rights-of-way are revocable at the election of the land owners. In some cases, not all of the owners named in the appropriate land records have joined in the rights-of-way grants, but in substantially all such cases signatures of the owners of majority interests have been obtained. Substantially all permits have been obtained from public authorities to cross over or under, or to lay facilities in or along, water courses, county roads, municipal streets, and state highways, where necessary, although in some instances these permits are revocable at the election of the grantor. Substantially all permits have also been obtained from railroad companies to cross over or under lands or rights-of-way, many of which are also revocable at the grantor’s election.

Certain of our rights to lay and maintain pipelines are derived from recorded gas well leases, with respect to wells currently in production; however, the leases are subject to termination if the wells cease to produce. Because many of these leases affect wells at the end of lines, these rights-of-way will not be used for any other purpose once the related wells cease to produce.

Employees

As is commonly the case with publicly-traded limited partnerships, we do not directly employ any of the persons responsible for our management or operations. In general, employees of ATLS and its affiliates manage and operate our business. ATLS employed approximately 485 people at December 31, 2014 who provided direct support for our operations.

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Affiliates of our General Partner will conduct business and activities of their own in which we will have no economic interest; and there could be material competition between our General Partner, affiliates of our General Partner and us for the time and effort of the officers and employees who provide services to our General Partner. Apart from our Executive Chairman and Executive Vice Chairman and officers providing services in the area of corporate development, the officers of our General Partner who provide services to us are generally assigned solely to our operations. However, they are not required to work full time on our affairs. These officers may also devote time to the affairs of our General Partner’s affiliates and be compensated by these affiliates for the services rendered to them. There may be conflicts between affiliates of our General Partner and us regarding the availability of these officers to manage us.

Available Information

We make our periodic reports under the Securities Exchange Act of 1934, including our annual report on Form 10-K, proxy statements and our quarterly reports on Form 10-Q and our current reports on Form 8-K, available through our website at www.atlaspipeline.com. To view these reports, click on “Investor Relations,” then “SEC Filings.” You may also receive, without charge, a paper copy of any such filings by request to us at Park Place Corporate Center One, 1000 Commerce Drive, 4th Floor, Pittsburgh, Pennsylvania 15275-1011, telephone number (877) 950-7473. A complete list of our filings is available on the SEC’s website at www.sec.gov. Any of our filings are also available at the SEC’s Public Reference Room at 100 F Street, N.E., Washington, D.C. 20549. The Public Reference Room may be contacted at telephone number (800) 732-0330 for further information.

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ITEM 1A. RISK FACTORS

Partnership interests are inherently different from the capital stock of a corporation, although many of the business risks to which we are subject are similar to those that would be faced by a corporation engaged in a similar business. If any of the following risks were actually to occur, our business, financial condition or results of operations could be materially adversely affected.

Risks Relating to Our Business

The amount of cash we generate depends, in part, on factors beyond our control.

The amount of cash we generate may not be sufficient for us to pay distributions at the current distribution levels or at all in the future. Our ability to make cash distributions depends primarily on our cash flows. Cash distributions do not depend directly on our profitability, which is affected by non-cash items. Therefore, cash distributions may be made during periods when we record losses and may not be made during periods when we record profits. The actual amounts of cash we generate will depend upon numerous factors relating to our business, which may be beyond our control, including:

• the demand for natural gas, NGLs, crude oil and condensate;

• the price of natural gas, NGLs, crude oil and condensate (including the volatility of such prices);

• the amount of NGL content in the natural gas we process;

• the volume of natural gas we gather;

• efficiency of our gathering systems and processing plants;

• expiration of significant contracts;

• continued development of wells for connection to our gathering systems;

• our ability to connect new wells to our gathering systems;

• our ability to integrate newly-formed ventures or acquired businesses with our existing operations;

• the availability of local, intrastate and interstate transportation systems;

• the availability of fractionation capacity;

• the expenses we incur in providing our gathering services;

• the cost of acquisitions and capital improvements;

• required principal and interest payments on our debt;

• fluctuations in working capital;

• prevailing economic conditions;

• fuel conservation measures;

• alternate fuel requirements;

• the strength and financial resources of our competitors;

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• the effectiveness of our commodity price risk management program and the creditworthiness of our derivatives counterparties;

• governmental (including environmental and tax) laws and regulations; and

• technical advances in fuel economy and energy generation devices.

In addition, the actual amount of cash we will have available for distribution will depend on other factors, including:

• the level of capital expenditures we make;

• the sources of cash used to fund our acquisitions;

• limitations on our access to capital or the market for our common units and notes;

• our debt service requirements; and

• the amount of cash reserves established by our General Partner for the conduct of our business.

Our ability to make payments on and to refinance our indebtedness will depend on our financial and operating performance, which may fluctuate significantly from quarter to quarter, and is subject to prevailing economic and industry conditions and financial, business and other factors, many of which are beyond our control. We cannot assure you we will continue to generate sufficient cash flow, or be able to borrow sufficient funds, to service our indebtedness or to meet our working capital and capital expenditure requirements. If we are not able to generate sufficient cash flow from operations or to borrow sufficient funds to service our indebtedness, we may be required to sell assets or equity, reduce capital expenditures, refinance all or a portion of our existing indebtedness or obtain additional financing. We cannot assure you we will be able to refinance our indebtedness, sell assets or equity, or borrow more funds on terms acceptable to us, or at all.

Economic conditions and instability in the financial markets could negatively impact our business.

Our operations are affected by the financial markets and related effects in the global financial system. The consequences of an economic recession and the effects of a financial crisis may include a lower level of economic activity and/or increased volatility in energy prices. This may result in a decline in energy consumption and lower market prices for oil and natural gas, and has previously resulted in a reduction in drilling activity in our service area and in wells connected to our pipeline system being shut in by their operators until prices improved. Any of these events may adversely affect our revenues and our ability to fund capital expenditures and, in turn, may impact the cash we have available to fund our operations, pay required debt service and make distributions to our unitholders.

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Instability in the financial markets may increase the cost of capital while reducing the availability of funds. This may affect our ability to raise capital and reduce the amount of cash available to fund our operations. We rely on our cash flow from operations and borrowings under our existing credit facility to execute our growth strategy and to meet our financial commitments and other short-term liquidity needs. We cannot be certain additional capital will be available to us to the extent required and on acceptable terms. Disruptions in the capital and credit markets could limit our access to liquidity needed for our business and impact our flexibility to react to changing economic and business conditions. Any disruption could require us to take measures to conserve cash until the markets stabilize or until we can arrange alternative credit arrangements or other funding for our business needs. Such measures could include reducing or delaying business activities, reducing our operations to lower expenses, and reducing other discretionary uses of cash. We may be unable to execute our growth strategy, take advantage of business opportunities or to respond to competitive pressures, any of which could negatively impact our business.

A weakening of the current economic situation could have an adverse impact on our lenders, producers, key suppliers or other customers, causing them to fail to meet their obligations to us. Market conditions could also impact our derivative instruments. If a counterparty is unable to perform its obligations and the derivative instrument is terminated, our cash flow and ability to make required debt service payments and pay distributions could be impacted. The uncertainty and volatility surrounding the global financial crisis may have further impacts on our business and financial condition that we currently cannot predict or anticipate.

We are affected by the volatility of prices for natural gas, NGL and crude oil products.

We derive a majority of our gross margin from POP and Keep-Whole contracts. As a result, our income depends to a significant extent upon the prices at which we buy and sell natural gas and at which we sell NGLs and condensate. Average estimated unhedged 2015 market prices for NGLs, natural gas and crude oil, based upon NYMEX forward price curves as of December 16, 2014, were $0.53 per gallon, $3.58 per MMBTU and $58.19 per barrel, respectively. A 10% change in these prices would change our forecasted net income for the twelve-month period ended December 31, 2015 by approximately $14.5 million. Additionally, changes in natural gas prices may indirectly impact our profitability since prices can influence drilling activity and well operations, and could cause operators of wells currently connected to our pipeline system or that we expect will be connected to our system to shut in their production until prices improve, thereby affecting the volume of gas we gather and process. Historically, the prices of natural gas, NGLs and crude oil have been subject to significant volatility in response to relatively minor changes in the supply and demand for these products, market uncertainty and a variety of additional factors beyond our control, including those we describe in “—The amount of cash we generate depends, in part, on factors beyond our control,” above. West Texas Intermediate crude oil prices traded in a range of $53.27 per barrel to $107.26 per barrel in 2014, while Henry Hub natural gas prices have traded in a range of $2.89 per MMBTU to $6.15 per MMBTU, during the same time period. We expect this volatility to continue. This volatility may cause our gross margin and cash flows to vary widely from period to period. Our commodity price risk management strategies may not be sufficient to offset price volatility risk and, in any event, do not cover all the throughput volumes. Moreover, derivative instruments are subject to inherent risks, which we describe in “–Our commodity price risk management strategies may fail to protect us and could reduce our gross margin and cash flow.”

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Our commodity price risk management strategies may fail to protect us and could reduce our gross margin and cash flow.

Our operations expose us to fluctuations in commodity prices. We utilize derivative contracts related to the future price of crude oil, natural gas and NGLs with the intent of reducing the volatility of our cash flows due to fluctuations in commodity prices. To the extent we protect our commodity prices using derivative contracts we may forego the benefits we would otherwise experience if commodity prices were to change in our favor. Our commodity price risk management activity may fail to protect or could harm us because, among other things:

• entering into derivative instruments can be expensive, particularly during periods of volatile prices;

• available derivative instruments may not correspond directly with the risks against which we seek protection;

• price relationship between the physical transaction and the derivative transaction could change;

• the anticipated physical transaction could be different than projected due to changes in contracts, lower production volumes or other operational impacts, resulting in possible losses on the derivative instrument, which are not offset by income on the anticipated physical transaction; and

• the party owing money in the derivative transaction may default on its obligation to pay.

We are exposed to the credit risks of our key customers, and any material nonpayment or nonperformance by our key customers could negatively impact our business.

We have historically experienced minimal collection issues with our counterparties; however our revenue and receivables are highly concentrated in a few key customers and therefore we are subject to risks of loss resulting from nonpayment or nonperformance by our key customers. In an attempt to reduce this risk, we have established credit limits for each counterparty and we attempt to limit our credit risk by obtaining letters of credit or other appropriate forms of security. Nonetheless, we have key customers whose credit risk cannot realistically be otherwise mitigated. Furthermore, although we evaluate the creditworthiness of our counterparties, we may not always be able to fully anticipate or detect deterioration in their creditworthiness and overall financial condition, which could expose us to an increased risk of nonpayment or other default under our contracts and other arrangements with them. Any material nonpayment or nonperformance by our key customers could impact our cash flow and ability to make required debt service payments and pay distributions.

Due to our lack of asset diversification, negative developments in our operations could reduce our ability to fund our operations, pay required debt service and make distributions to our common unitholders.

We rely primarily on the revenues generated from our gathering, processing and treating operations, and as a result, our financial condition depends upon prices of, and continued demand for, natural gas, NGLs and condensate. Due to our lack of asset-type diversification, a negative development in this business could have a significantly greater impact on our financial condition and results of operations than if we maintained more diverse assets.

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The amount of natural gas we gather will decline over time unless we are able to attract new wells to connect to our gathering systems.

Production of natural gas from a well generally declines over time until the well can no longer economically produce natural gas and is plugged and abandoned. Failure to connect new wells to our gathering systems could, therefore, result in the amount of natural gas we gather declining substantially over time and could, upon exhaustion of the current wells, cause us to abandon one or more of our gathering systems and, possibly, cease operations. The primary factors affecting our ability to connect new supplies of natural gas to our gathering systems include our success in contracting for existing wells not committed to other systems, the level of drilling activity near our gathering systems and our ability to attract natural gas producers away from our competitors’ gathering systems.

Over time, fluctuations in energy prices can greatly affect production rates and investments by third parties in the development of new oil and natural gas reserves. Drilling activity generally decreases as oil and natural gas prices decrease. A decrease in exploration and development activities in the fields served by our gathering, processing and treating facilities could result if there is a sustained decline in natural gas, crude oil and/or NGL prices, which, in turn, would lead to a reduced utilization of these assets. The decline in the credit markets, the lack of availability of credit, debt or equity financing and the decline in commodity prices may result in a reduction of producers’ exploratory drilling. We have no control over the level of drilling activity in our service areas, the amount of reserves underlying wells that connect to our systems and the rate at which production from a well will decline. In addition, we have no control over producers or their production decisions, which are affected by, among other things, prevailing and projected energy prices, demand for hydrocarbons, the level of reserves, drilling costs, geological considerations, governmental regulation and the availability and cost of capital. In a low price environment, producers may determine to shut in wells already connected to our systems until prices improve. Because our operating costs are fixed to a significant degree, a reduction in the natural gas volumes we gather or process would result in a reduction in our gross margin and cash flow.

Federal and state legislative and regulatory initiatives relating to hydraulic fracturing could result in reduced volumes available for us to gather and process.

Various federal and state initiatives are underway to regulate, or further investigate, the environmental impacts of hydraulic fracturing, a process that involves the pressurized injection of water, chemicals and other substances into rock formations to stimulate hydrocarbon production. The adoption of any future federal, state or local laws or regulations imposing additional permitting, disclosure or regulatory obligations related to, or otherwise restricting or increasing costs regarding the use of, hydraulic fracturing could make it more difficult to drill certain oil and natural gas wells. As a result, the volume of natural gas we gather and process from producer wells in our service area that use hydraulic fracturing could be substantially reduced, which could adversely affect our gross margin and cash flow.

We currently depend on certain key producers for their supply of natural gas; the loss of any of these key producers could reduce our revenues.

During 2014, Atoka Midstream, LLC; Chesapeake Energy Corporation; COG Operating, LLC; DCP; Endeavor Energy Resources L.P.; Laredo Petroleum Inc.; Marathon Oil Company; MarkWest; Merit Management Partners; Parsley Energy, L.P.; Pioneer; SandRidge; Statoil; Talisman; Vanguard Natural Resources, LLC; and XTO accounted for a significant amount of our natural gas supply. If these producers reduce the volumes of natural gas they supply to us, our gross margin and cash flow could be reduced unless we obtain comparable supplies of natural gas from other producers.

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We may face increased competition in the future.

We face competition for well connections.

• DCP Midstream Partners, LLC; Enable Midstream Partners, L.P.; Energy Transfer Partners, L.P.; Kinder Morgan, Inc.; and ONEOK Partners L.P. operate competing gathering systems and processing plants in our SouthOK service areas.

• Caballo Energy, LLC; DCP Midstream Partners, LLC; Lumen Midstream Partners, LLC; Mustang Fuel Corporation; ONEOK Partners L.P.; SemGas, L.P.; and Superior Pipeline Company, LLC operate competing gathering systems and processing plants in our WestOK service area.

• DCP Midstream Partners, LLC; Energy Transfer Partners, L.P.; Enterprise Products Partners, L.P.; Kinder Morgan, Inc.; and Southcross Energy Partners, L.P. operate competing gathering systems and processing plants in our SouthTX service area.

• DCP Midstream Partners, LLC; Energy Transfer Partners, L.P.; Enlink Midstream Partners, LP; Southern Union Company; Targa Resources Partners L.P.; and West Texas Gas, Inc. operate competing gathering systems and processing plants in our WestTX service area.

Some of our competitors have greater financial and other resources than we do. If these companies become more active in our service areas, we may not be able to compete successfully with them in securing new well connections or retaining current well connections. In addition, customers who are significant producers of natural gas may develop their own gathering and processing systems in lieu of using those operated by us. If we do not compete successfully, the amount of natural gas we gather and process will decrease, reducing our gross margin and cash flow.

The amount of natural gas we gather or process may be reduced if the intrastate and interstate pipelines to which we deliver natural gas or NGLs cannot or will not accept the gas.

Our gathering systems principally serve as intermediate transportation facilities between wells connected to our systems and the intrastate or interstate pipelines to which we deliver natural gas. Our plant tailgate pipelines, including the Driver Residue Pipeline and the APL SouthTex Transmission Section 311 pipeline, provide essential links between our processing plants and intrastate and interstate pipelines that move natural gas to market. We deliver NGLs to intrastate or interstate pipelines at the tailgates of the plants. If one or more of the pipelines or fractionation facilities to which we deliver natural gas and NGLs has service interruptions, capacity limitations or otherwise cannot or do not accept natural gas or NGLs from us, and we cannot arrange for delivery to other pipelines or fractionation facilities, the amount of natural gas we gather and process may be reduced. Since our revenues depend upon the quantities of natural gas we gather and natural gas and NGLs we sell or transport, this could result in a material reduction in our gross margin and cash flow.

Failure of the natural gas or NGLs we deliver to meet the specifications of interconnecting pipelines could result in curtailments by the pipelines.

The pipelines to which we deliver natural gas and NGLs typically establish specifications for the products they are willing to accept. These specifications include requirements such as hydrocarbon dew point, compositions, temperature, and foreign content (such as water, sulfur, carbon dioxide, and hydrogen sulfide), and these specifications can vary by product or pipeline. If the total mix of a product that we deliver to a pipeline fails to meet the applicable product quality specifications, the pipeline may refuse to accept all or a part of the products scheduled for delivery to it or may invoice us for the costs to

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handle the out-of-specification products. In those circumstances, we may be required to find alternative markets for that product or to shut-in the producers of the non-conforming natural gas causing the products to be out of specification, potentially reducing our through-put volumes or revenues.

The success of our operations depends upon our ability to continually find and contract for new sources of natural gas supply.

Our agreements with most producers with which we do business generally do not require them to dedicate significant amounts of undeveloped acreage to our systems. While we do have some undeveloped acreage dedicated on our systems, most notably with our partner Pioneer on our WestTX system, we do not have assured sources to provide us with new wells to connect to our gathering systems. Failure to connect new wells to our operations, as described in “–The amount of natural gas we gather will decline over time unless we are able to attract new wells to connect to our gathering systems,” above, could reduce our gross margin and cash flow.

If we are unable to obtain new rights-of-way or the cost of renewing existing rights-of-way increases, our cash flow could be reduced.

We do not own all the land on which our pipelines are constructed. We obtain the rights to construct and operate our pipelines on land owned by third parties. In some cases, these rights expire at a specified time. Therefore we are subject to the possibility of more onerous terms or increased costs to retain necessary land use if we do not have valid rights-of-way or if such rights-of-way lapse or terminate. Our loss of these rights, through our inability to renew right-of-way contracts or otherwise, could have a material adverse effect on our business, results of operations and financial condition. We may be unable to obtain rights-of-way to connect new natural gas supplies to our existing gathering lines or capitalize on other attractive expansion opportunities. If the cost of obtaining new rights-of-way or renewing existing rights-of-way increases, then our cash flow could be reduced.

A change in the regulations related to a state’s use of eminent domain could inhibit our ability to secure rights-of way for future pipeline construction projects.

Certain states where we operate are considering the adoption of laws and regulations that would limit or eliminate a state’s ability to exercise eminent domain over private property. This, in turn, could make it more difficult or costly for us to secure rights-of-way for future pipeline construction and other projects. Further, states may amend their procedures for certain entities within the state to use eminent domain.

The scope and costs of the risks involved in making acquisitions may prove greater than estimated at the time of the acquisition.

Any acquisition involves potential risks, including, among other things:

• the risk that reserves expected to support the acquired assets may not be of the anticipated magnitude or may not be developed as anticipated;

• mistaken assumptions about revenues and costs, including synergies;

• significant increases in our indebtedness and working capital requirements;

• delays in obtaining any required regulatory approvals or third party consents;

• the imposition of conditions on any acquisition by a regulatory authority;

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• an inability to integrate successfully or timely the businesses we acquire;

• the assumption of unknown liabilities;

• limitations on rights to indemnity from the seller;

• the diversion of management’s attention from other business concerns;

• increased demands on existing personnel;

• customer or key employee losses at the acquired businesses; and

• the failure to realize expected growth or profitability.

The scope and cost of these risks may ultimately be materially greater than estimated at the time of the acquisition. Further, our future acquisition costs may be higher than those we have achieved historically. Any of these factors could adversely impact our future growth and our ability to make or increase distributions.

We may be unsuccessful in integrating the operations from acquisitions with our operations and in realizing all the anticipated benefits of these acquisitions.

Our integration of previously independent operations, with our own can be a complex, costly and time-consuming process. The difficulties of combining these systems with existing systems include, among other things:

• operating a significantly larger combined entity;

• the necessity of coordinating geographically disparate organizations, systems and facilities;

• integrating personnel with diverse business backgrounds and organizational cultures;

• consolidating operational and administrative functions;

• integrating pipeline safety-related records and procedures;

• integrating internal controls, compliance under Sarbanes-Oxley Act of 2002 and other corporate governance matters;

• the diversion of management’s attention from other business concerns;

• customer or key employee loss from the acquired businesses;

• a significant increase in our indebtedness; and

• potential environmental or regulatory liabilities and title problems.

Our investment and the additional overhead costs we incur to grow our business may not deliver the expected incremental volume or cash flow. Costs incurred and liabilities assumed in connection with the acquisition and increased capital expenditures and overhead costs incurred to expand our operations could harm our business or future prospects, and result in significant decreases in our gross margin and cash flow.

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Our construction of new assets may not result in revenue increases and is subject to regulatory, environmental, political, legal and economic risks, which could impair our results of operations and financial condition.

We are actively growing our business through the construction of new assets. The construction of additions or modifications to our existing systems and facilities, and the construction of new assets, involve numerous regulatory, environmental, political and legal uncertainties beyond our control and require the expenditure of significant amounts of capital. The Endangered Species Act restricts activities that may affect endangered or threatened species or their habitats. If endangered species are located in areas where we propose to construct new gathering or processing facilities, such work could be prohibited or delayed or expensive mitigation may be required. Any projects we undertake may not be completed on schedule, at the budgeted cost or at all. Moreover, our revenues may not increase immediately upon the expenditure of funds on a particular project. For instance, if we expand a gathering system, the construction may occur over an extended period of time, and we will not receive any material increase in revenues until the project is completed. Moreover, we are constructing facilities to capture anticipated future growth in production in a region in which growth may not materialize. Since we are not engaged in the exploration for, and development of, natural gas reserves, we often do not have access to estimates of potential reserves in an area before constructing facilities in the area. To the extent we rely on estimates of future production in our decision to construct additions to our systems, the estimates may prove to be inaccurate because there are numerous uncertainties inherent in estimating quantities of future production. As a result, new facilities may not be able to attract enough throughput to achieve our expected investment return, which could impair our results of operations and financial condition. In addition, our actual revenues from a project could materially differ from expectations as a result of the volatility in the price of natural gas, the NGL content of the natural gas processed and other economic factors described in this section.

We continue to expand the natural gas gathering systems surrounding our facilities in order to maximize plant throughput. In addition to the risks discussed above, expected incremental revenue from recent projects could be reduced or delayed due to the following reasons:

• difficulties in obtaining capital for additional construction and operating costs;

• difficulties in obtaining permits or other regulatory or third-party consents;

• additional construction and operating costs exceeding budget estimates;

• revenue being less than expected due to lower commodity prices or lower demand;

• difficulties in obtaining consistent supplies of natural gas; and

• terms in operating agreements that are not favorable to us.

We may not be able to execute our growth strategy successfully.

Our strategy contemplates substantial growth through both the acquisition of other gathering systems and processing assets and the expansion of our existing gathering systems and processing assets. Our growth strategy through acquisitions involves numerous risks, including:

• we may not be able to identify suitable acquisition candidates;

• we may not be able to make acquisitions on economically acceptable terms for various reasons, including limitations on access to capital and increased competition for a limited pool of suitable assets;

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• our costs in seeking to make acquisitions may be material, even if we cannot complete any acquisition we have pursued;

• irrespective of estimates at the time we make an acquisition, the acquisition may prove to be dilutive to earnings and operating surplus;

• we may encounter delays in receiving regulatory approvals or may receive approvals that are subject to material conditions;

• we may encounter difficulties in integrating operations and systems; and

• any additional debt we incur to finance an acquisition may impair our ability to service our existing debt.

Limitations on our access to capital or the market for our common units could impair our ability to execute our growth strategy.

Our ability to raise capital for acquisitions and other capital expenditures depends upon ready access to the capital markets. Historically, we have financed our acquisitions and expansions through bank credit facilities and the proceeds of public and private debt and equity offerings. If we are unable to access the capital markets, we may be unable to execute our growth strategy.

Our debt levels and restrictions in our revolving credit facility and the indentures governing our senior notes could limit our ability to fund operations and pay required debt service.

We have a significant amount of debt. We will need a substantial portion of our cash flow to make principal and interest payments on our indebtedness, which will reduce the funds that would otherwise be available for operations and future business opportunities. If our operating results are not sufficient to service our current or future indebtedness, we will be forced to take actions such as reducing or delaying business activities, acquisitions, investments and/or capital expenditures; selling assets; restructuring or refinancing our indebtedness; or seeking additional equity capital or bankruptcy protection. We may not be able to affect any of these remedies on satisfactory terms, or at all.

Our revolving credit facility and the indentures governing our senior notes contain covenants limiting the ability to incur indebtedness, grant liens, engage in transactions with affiliates and make distributions to unitholders. Our revolving credit facility also contains covenants requiring us to maintain certain financial ratios and may limit our ability to capitalize on acquisitions and other business opportunities.

Increases in interest rates could adversely affect our unit price.

Credit markets are continuing to experience low interest rates. Interest rates on future credit facilities and debt offerings could be higher than current levels, causing our financing costs to increase. As with other yield-oriented securities, our unit price is impacted by the level of our cash distributions and implied distribution yield. The distribution yield is often used by investors to compare and rank related yield-oriented securities for investment decision-making purposes. Therefore, changes in interest rates, either positive or negative, may affect the yield requirements of investors who invest in our units. A rising interest rate environment could have an adverse impact on our unit price and our ability to issue additional equity or to incur debt to make acquisitions or for other purposes and could impact our ability to make cash distributions.

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An impairment of goodwill, long-lived assets, including intangible assets, and equity-method investments could reduce our earnings.

In connection with our acquisitions, we have recorded goodwill and identifiable intangible assets. Goodwill is recorded when the purchase price of a business exceeds the fair market value of the tangible and separately measurable intangible net assets. GAAP requires us to test goodwill for impairment on an annual basis or when events or circumstances occur indicating that goodwill might be impaired. Long-lived assets, including intangible assets with finite useful lives, are reviewed for impairment whenever events or changes in circumstances indicate the carrying amount may not be recoverable. For the investments we account for under the equity method, the impairment test considers whether the fair value of the equity investment as a whole, not the underlying net assets, has declined and whether that decline is other than temporary. If we determine an impairment is indicated, we would be required to take an immediate noncash charge to earnings with a correlative effect on equity and balance sheet leverage as measured by debt to total capitalization. Although we have not experienced any other events or circumstances that indicate the carrying amounts of our other intangible assets and goodwill were impaired, we could experience future events that result in impairments. An impairment of the value of our existing goodwill and intangible assets could have a significant negative impact on our future operating results and could have an adverse impact on our ability to satisfy the financial ratios or other covenants under our existing or future debt agreements.

Regulation of our gathering operations could increase our operating costs; decrease our revenue; or both.

Our gathering and processing of natural gas is exempt from regulation by FERC, under the Natural Gas Act of 1938. While gas transmission activities conducted through our plant tailgate pipelines, such as the Driver Residue Pipeline and the SouthTX Residue Pipeline, are subject to FERC’s Natural Gas Act, FERC may limit the extent to which it regulates those activities. The way we operate, the implementation of new laws or policies (including changed interpretations of existing laws) or a change in facts relating to our plant tailgate pipeline operations could subject our operations to more extensive regulation by FERC under the Natural Gas Act, the Natural Gas Policy Act, or other laws. Any such regulation could increase our costs; decrease our gross margin and cash flow, or both.

Even if our gathering and processing of natural gas is not generally subject to regulation under the Natural Gas Act, FERC regulation will still affect our business and the market for our products. FERC’s policies and practices affect a range of natural gas pipeline activities, including, for example, its policies on interstate natural gas pipeline open access transportation, ratemaking, capacity release, environmental protection and market center promotion, which indirectly affect intrastate markets. FERC has pursued pro-competitive policies in its regulation of interstate natural gas pipelines. We cannot assure you that FERC will continue this approach as it considers matters such as pipeline rates and rules and policies that may affect rights of access to natural gas transportation capacity.

Since federal law generally leaves any economic regulation of natural gas gathering to the states, state and local regulations may also affect our business. Matters subject to such regulation include access, rates, terms of service and safety. For example, our gathering lines are subject to ratable take, common purchaser, and similar statutes in one or more jurisdictions in which we operate. Common purchaser statutes generally require gatherers to purchase without undue discrimination as to source of supply or producer, while ratable take statutes generally require gatherers to take, without discrimination, natural gas production that may be tendered to the gatherer for handling. Kansas, Oklahoma and Texas have adopted complaint-based regulation of natural gas gathering activities, which allows natural gas producers and shippers to file complaints with state regulators in an effort to resolve grievances relating to natural gas gathering access and discrimination with respect to rates or terms of service. Should a complaint be filed with the Kansas Corporation Commission, Oklahoma Corporation Commission, or Texas Railroad

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Commission, or should one or more of these agencies become more active in regulating our industry, our revenues could decrease. Collectively, all of these statutes may restrict our right as an owner of gathering facilities to decide with whom we contract to purchase or gather natural gas.

Compliance with pipeline integrity regulations issued by the DOT and state agencies could result in substantial expenditures for testing, repairs and replacement.

DOT and state agency regulations require pipeline operators to develop integrity management programs for transportation pipelines located in “high consequence areas.” The regulations require operators to:

• perform ongoing assessments of pipeline integrity;

• identify and characterize applicable threats to pipeline segments that could impact a high consequence area;

• improve data collection, integration and analysis;

• repair and remediate the pipeline as necessary; and

• implement preventative and mitigating actions.

While we do not believe the cost of implementing integrity management program testing along segments of our pipeline will have a material effect on our results of operations, the costs of any repair, remediation, preventative or mitigating actions that may be determined to be necessary as a result of the testing program could be substantial.

Our midstream natural gas operations could incur significant costs if PHMSA adopts more stringent regulations governing our business.

On January 3, 2012, the Job Act was signed into law. The Act directs the Secretary of Transportation to undertake a number of reviews, studies and reports, some of which may result in natural gas and hazardous liquids pipeline safety rulemakings. These rulemakings will be conducted by PHMSA.

Since passage of the Job Act, PHMSA has published several notices of proposed rulemaking which propose a number of changes to regulations governing the safety of gas transmission pipelines, gathering lines and related facilities, including increased safety requirements and increased penalties.

The adoption of regulations that apply more comprehensive or stringent safety standards to gathering lines could require us to install new or modified safety controls, incur additional capital expenditures, or conduct maintenance programs on an accelerated basis. Such requirements could result in our incurrence of increased operational costs that could be significant; or if we fail to, or are unable to, comply, we may be subject to administrative, civil and criminal enforcement actions, including assessment of monetary penalties or suspension of operations, which could have a material adverse effect on our financial position or results of operations and our ability to make distributions to our unitholders.

Our midstream natural gas operations may incur significant costs and liabilities resulting from a failure to comply with new or existing environmental regulations or a release of regulated materials into the environment by us or the producers in our service areas.

The operations of our gathering systems, plants and other facilities, as well as the operations of the producers in our service areas, are subject to stringent and complex federal, state and local environmental laws and regulations. These laws and regulations can restrict or impact our business

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activities in many ways, including restricting the manner in which we, and our producers, dispose of substances, requiring remedial action to remove or mitigate contamination, and requiring capital expenditures to comply with control requirements. Failure to comply with these laws and regulations may trigger a variety of administrative, civil and criminal enforcement measures, including the assessment of monetary penalties, increased cost of operations, the imposition of remedial requirements, and the issuance of orders enjoining future operations. Certain environmental statutes impose strict joint and several liability for costs required to clean up and restore sites where substances and wastes have been disposed or otherwise released. Moreover, it is not uncommon for neighboring landowners and other third parties to file claims for personal injury and property damage allegedly caused by the release of regulated substances or wastes into the environment.

There is inherent risk of the incurrence of environmental costs and liabilities in our business due to our handling of natural gas and other petroleum products, air emissions related to our operations, historical industry operations including releases of regulated substances into the environment, and waste disposal practices. For example, an accidental release from one of our pipelines or processing facilities could subject us to substantial liabilities arising from (1) environmental cleanup, restoration costs and natural resource damages; (2) claims made by neighboring landowners and other third parties for personal injury and property damage; and (3) fines or penalties for related violations of environmental laws or regulations. Moreover, the possibility exists that stricter laws, regulations or enforcement policies, including those relating to emissions from production, processing and transmission activities, could significantly increase our compliance costs and the cost of any remediation that may become necessary. Producers in our service areas may curtail or abandon exploration and production activities if any of these regulations cause their operations to become uneconomical. We may not be able to recover some or any of these costs from insurance.

Climate change legislation or regulations at the international, federal and state levels restricting emissions of greenhouse gases (“GHGs”) could result in increased operating costs and reduced demand for our midstream services.

In response to findings that emissions of carbon dioxide, methane, and other GHGs present an endangerment to public health and the environment because emissions of such gases are contributing to the warming of the earth’s atmosphere and other climate changes, the EPA adopted regulations under existing provisions of the federal Clean Air Act that require entities that produce certain gases to inventory, monitor and report such gases. Additionally, the EPA adopted rules to regulate GHG emissions through traditional major source construction and operating permit programs. The EPA confirmed the permitting thresholds established in a 2010 rule in July 2012. These permitting programs require consideration of and, if deemed necessary, implementation of best available control technology to reduce GHG emissions. In addition there are several international and state level initiatives and proposals addressing domestic and global climate issues. As a result, our operations could face additional costs for emissions control and higher costs of doing business.

Litigation or governmental regulation relating to environmental protection and operational safety may result in substantial costs and liabilities.

Our operations are subject to federal and state environmental laws under which owners of natural gas pipelines can be liable for clean-up costs and fines in connection with any pollution caused by their pipelines. We may also be held liable for clean-up costs resulting from pollution that occurred before our acquisition of a gathering system. In addition, we are subject to federal and state safety laws that dictate the type of pipeline, quality of pipe protection, depth of pipelines, methods of welding and other construction-related standards, as well as certain operations and maintenance practices. Any violation of environmental, construction or safety laws could impose substantial liabilities and costs on us.

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We are also subject to the requirements of OSHA, and comparable state statutes. Any violation of OSHA could impose substantial costs on us.

Oil and gas operators can be impacted by litigation brought against the agencies which regulate the oil and gas industry. The outcomes of such activities can impact our operations.

We cannot predict whether or in what form any new litigation or regulatory requirements might be enacted or adopted, nor can we predict our costs of compliance. In general, we expect new regulations would increase our operating costs and, possibly, require us to obtain additional capital to pay for improvements or other compliance actions necessitated by those regulations.

We are subject to operating and litigation risks that may not be covered by insurance.

Our operations are subject to all operating hazards and risks incidental to gathering, processing and treating natural gas and NGLs. These hazards include:

• damage to pipelines, plants, related equipment and surrounding properties caused by floods and other natural disasters;

• inadvertent damage from construction and farm equipment;

• leakage of natural gas, NGLs and other hydrocarbons;

• fires and explosions;

• other hazards, including those associated with high-sulfur content, or sour gas, that could also result in personal injury and loss of life, pollution and suspension of operations;

• nuisance and other landowner claims arising from our operations; and

• acts of terrorism directed at our pipeline infrastructure, production facilities and surrounding properties.

As a result, we may be a defendant in various legal proceedings and litigation arising from our operations. We may not be able to maintain or obtain insurance of the type and amount we desire at reasonable rates. As a result of market conditions, premiums and deductibles for our insurance policies could escalate in the future. Our existing insurance coverage does not cover all potential losses, costs, or liabilities and we could suffer losses in amounts in excess of our existing insurance coverage. Moreover, in some instances, insurance could become unavailable or available only for reduced amounts of coverage. For example, insurance carriers require broad exclusions for losses due to war risk and terrorist acts. If we were to incur a significant liability, for which we were not fully insured, our gross margin and cash flow would be materially reduced.

Catastrophic weather events may curtail operations at, or cause closure of, any of our processing plants, which could harm our business.

Our assets and operations can be adversely affected by hurricanes, floods, earthquakes, tornadoes and other natural phenomena and weather conditions, including extreme temperatures. If operations at any of our processing plants were to be curtailed, or closed, whether due to natural catastrophe, accident, environmental regulation, periodic maintenance, or for any other reason, our ability to process natural gas from the relevant gathering system and, as a result, our ability to extract and sell NGLs, would be harmed. If this curtailment or stoppage were to extend for more than a short period, our gross margin and cash flow could be materially reduced.

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Disruption due to political uncertainties, civil unrest or the threat of terrorist attacks has resulted in increased costs, and future war or risk of war may adversely impact our results of operations and our ability to raise capital.

Political uncertainties, civil unrest and terrorist attacks or the threat of terrorist attacks cause instability in the global financial markets and other industries, including the energy industry. Such disruptions could adversely affect our operations and the markets for our products and services, including through increased volatility in crude oil and natural gas prices, or the possibility that our infrastructure facilities, including pipelines, production facilities, and transmission and distribution facilities, could be direct targets, or indirect casualties, of an act of terror. In addition, instabilities in the financial and insurance markets caused by such disruptions may make it more difficult for us to access capital and may increase insurance premiums or make it difficult to obtain the insurance coverage that we consider adequate.

The loss of key personnel could adversely affect our ability to operate.

Our ability to manage and grow our business effectively may be adversely affected if we lose key management or operational personnel. We depend on the continuing efforts of our General Partner’s executive officers. The departure of any of these executive officers could have a significant negative impact on our business, operating results, financial condition, and on our ability to compete effectively in the marketplace. Additionally, our ability to hire, train, and retain qualified personnel will continue to be important and will become more challenging as we grow. Our ability to grow and to continue our current level of service to our customers will be adversely impacted if we are unable to successfully hire, train and retain these important personnel.

Risks Relating to Our Ownership Structure

ATLS and its affiliates have conflicts of interest and limited fiduciary responsibilities, which may permit it to favor its own interests to the detriment of our unitholders.

ATLS owns and controls our General Partner and also has a 5.5% limited partner interest in us. We do not have any employees and rely solely on employees of ATLS and its affiliates, who serve as our agents, including all the senior managers who operate our business. A number of officers and employees of ATLS also own interests in us. Conflicts of interest may arise between ATLS, our General Partner and its affiliates, on the one hand, and us, on the other hand. As a result of these conflicts, our General Partner may favor its own interests and the interests of its affiliates over our interests and the interests of our unitholders. These conflicts include, among others, the following situations:

• Employees of ATLS who provide services to us also devote time to the businesses of ATLS in which we have no economic interest. If these separate activities are greater than our activities, there could be material competition for the time and effort of the employees who provide services to our General Partner, which could result in insufficient attention to the management and operation of our business.

• Neither our partnership agreement nor any other agreement requires ATLS to pursue a future business strategy that favors us or to use our gathering or processing services. ATLS’ directors and officers have a fiduciary duty to make these decisions in the best interests of the unitholders of ATLS.

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• Our General Partner is allowed to take into account the interests of parties other than us, such as ATLS, in resolving conflicts of interest, which has the effect of limiting its fiduciary duty to us.

• Our General Partner controls the enforcement of obligations owed to us by our General Partner and its affiliates.

Conflicts of interest with ATLS and its affiliates, including the foregoing factors, could exacerbate periods of lower or declining performance, or otherwise reduce our gross margin and cash flow.

Cost reimbursements due to our General Partner may be substantial.

We reimburse ATLS, our General Partner and its affiliates, including officers and directors of ATLS, for all expenses they incur on our behalf. Our General Partner has sole discretion to determine the amount of these expenses. In addition, ATLS provides us with services for which we are charged reasonable fees as determined by ATLS in its sole discretion. The reimbursement of expenses or payment of fees could adversely affect our ability to fund our operations and pay required debt service.

Holders of our common units have limited voting rights and are not entitled to elect our General Partner or its directors.

Unlike the holders of common stock in a corporation, unitholders have only limited voting rights on matters affecting our business and, therefore, limited ability to influence management’s decisions regarding our business. Unitholders will not elect our General Partner or the managing board of our General Partner and have no right to elect our General Partner or the managing board of our General Partner on an annual or other continuing basis. The managing board of our General Partner is chosen by ATLS, the owner of 100% of the equity of our General Partner. Furthermore, if the unitholders are dissatisfied with the performance of our General Partner, they have little ability to remove our General Partner. As a result of these limitations, the price at which the common units trade could be diminished because of the absence or reduction of a takeover premium in the trading price.

Control of our General Partner may be transferred to a third party without unitholder consent.

Our General Partner may transfer its general partner interest to a third party in a merger or in a sale of all or substantially all of its assets without the consent of the unitholders. Furthermore, our partnership agreement does not restrict the ability of the owners of our General Partner from transferring all or a portion of their respective ownership interest in our General Partner to a third party. The new owners of our General Partner would then be in a position to replace the managing board and officers of our General Partner with its own choices and thereby influence the decisions taken by the managing board and officers.

We may issue additional units without unitholder approval, which would dilute existing ownership interests.

Our partnership agreement does not limit the number of additional limited partner interests that we may issue at any time without the approval of our unitholders, including units that rank senior to our common units as to quarterly cash distributions. The issuance by us of additional common units or other equity securities of equal or senior rank will have the following effects:

• our existing unitholders’ proportionate ownership interest in us will decrease;

• the amount of cash available for distribution on each unit may decrease; and

• the market price of the common units may decline.

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We own and operate certain of our systems through joint ventures, and our control of such systems is limited by provisions of the agreements we have entered into with our joint venture partners and by our percentage ownership in such joint venture entities.

Certain of our joint ventures are structured so that a subsidiary of ours is the managing member of the limited liability company that owns the system being operated. However, the operational agreements applicable to such joint venture entities generally require consent of our joint venture partner for specified extraordinary transactions, such as admission of new members; engaging in transactions with our affiliates not approved by the company conflicts committee; incurring debt outside the ordinary course of business; and disposing of company assets above specified thresholds.

In addition, certain of our systems are operated by joint venture entities that we do not operate, or in which we do not have an ownership stake that permits us to control the business activities of the entity. We have limited ability to influence the business decisions of such joint venture entities, and we may be unable to control the amount of cash we will receive from the operation and could be required to contribute significant cash to fund our share of their operations, which could adversely affect our ability to distribute cash to our unitholders.

Tax Risks Relating to Unit Ownership

If we were treated as a corporation for federal income tax purposes, or if we were to become subject to a material amount of entity-level taxation for federal or state income tax purposes, then our cash available for distribution to our unitholders could be substantially reduced.

We are currently treated as a partnership for federal income tax purposes, which requires that 90% or more of our gross income for every taxable year consist of qualifying income, as defined in Section 7704 of the Internal Revenue Code. Qualifying income is defined as income and gains derived from the exploration, development, mining or production, processing, refining, transportation (including pipelines transporting gas, oil, or products thereof), or the marketing of any mineral or natural resource (including fertilizer, geothermal energy, and timber). We may not meet this requirement or current law may change so as to cause, in either event, us to be treated as a corporation for federal income tax purposes or otherwise subject to federal income tax. We have not requested, and do not plan to request, a ruling from the IRS on this or any other matter affecting us.

If we were treated as a corporation for federal income tax purposes, we would pay federal income tax on our taxable income at the corporate tax rate. Distributions to our unitholders would generally be taxed again as corporate dividends, and no income, gains, losses, deductions or credits would flow through to our unitholders. Because a tax would be imposed upon us as a corporation, our cash available for distribution to our unitholders would be substantially reduced. Thus, treatment of us as a corporation would result in a material reduction in our anticipated cash flows, likely causing a substantial reduction in the value of our units.

Current tax law may change, causing us to be treated as a corporation for federal and/or state income tax purposes or otherwise subjecting us to entity level taxation. For example, because of widespread state budget deficits, several states are evaluating ways to subject partnerships to entity level taxation through the imposition of state income, franchise or other forms of taxation. If any state were to impose a tax upon us as an entity, the cash available for distribution to our unitholders would be reduced. Furthermore, any modification to the federal income tax laws and interpretations thereof may or may not

49

be applied retroactively and could make it more difficult or impossible for us to meet the exception to be treated as a partnership for U.S. federal income tax purposes that is not taxable as a corporation, affect or cause us to change our business activities, affect the tax considerations of an investment in us, change the character or treatment of portions of our income, adversely affect an investment in our common units or otherwise negatively impact the value of an investment in our common units.

Unitholders may be required to pay taxes on income from us even if they do not receive any cash distributions from us.

Unitholders may be required to pay federal income taxes and, in some cases, state and local income taxes on their share of our taxable income, whether or not they receive cash distributions from us. Unitholders may not receive cash distributions from us equal to their share of our taxable income or even equal to the tax liability, which results from the taxation of their share of our taxable income.

Tax gain or loss on disposition of our common units could be more or less than expected.

If a unitholder sells their common units, they will recognize a gain or loss equal to the difference between the amount realized and the adjusted tax basis in those common units. Prior distributions and the allocation of losses, including depreciation deductions, to the unitholder in excess of the total net taxable income allocated to them, which decreased the tax basis in their common units, will, in effect, become taxable income to them if the common units are sold at a price greater than their tax basis in those common units, even if the price is less than the original cost. A substantial portion of the amount realized, whether or not representing gain, may be ordinary income to the unitholder.

Tax-exempt entities and foreign persons face unique tax issues from owning common units that may result in adverse tax consequences to them.

Investment in common units by tax-exempt entities, including employee benefit plans and individual retirement accounts (known as IRAs) and non-U.S. persons raises issues unique to them. For example, virtually all of our income allocated to organizations exempt from federal income tax, including individual retirement accounts and other retirement plans, will be unrelated business taxable income and will be taxable to such a unitholder. Distributions to non-U.S. persons will be reduced by withholding taxes imposed at the highest effective applicable tax rate, and non-U.S. persons will be required to file United States federal income tax returns and pay tax on their share of our taxable income.

We treat each purchaser of our common units as having the same tax benefits without regard to the common units purchased. The IRS may challenge this treatment, which could adversely affect the value of the common units.

Because we cannot match transferors and transferees of common units, we will adopt depreciation and amortization positions that may not conform to all aspects of existing Treasury regulations. A successful IRS challenge to those positions could adversely affect the amount of tax benefits available to our unitholders. It also could affect the timing of these tax benefits or the amount of gain on the sale of common units and could have a negative impact on the value of our common units or result in audits of and adjustments to our unitholders’ tax returns.

The sale or exchange of 50% or more of our capital and profits interest within a 12-month period will result in the termination of our partnership for federal income tax purposes.

We will be considered to have terminated our partnership for federal income tax purposes if there is a sale or exchange of 50% or more of the total interest in our capital and profits within a 12-month

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period. The termination would, among other things, result in the closing of our taxable year for all unitholders and could result in a deferral of depreciation deductions allowable in computing our taxable income for the year in which the termination occurs. Thus, if this occurs, the unitholder will be allocated an increased amount of federal taxable income for the year in which we are considered to be terminated as a percentage of the cash distributed to the unitholder with respect to that period.

Unitholders may be subject to state and local taxes and return filing requirements as a result of investing in our common units.

In addition to federal income taxes, our unitholders will likely be subject to other taxes, including state and local taxes, unincorporated business taxes and estate, inheritance or intangible taxes that are imposed by the various jurisdictions in which we do business or own property now or in the future, even if our unitholders do not reside in any of those jurisdictions. Our unitholders will likely be required to file state and local income tax returns and pay state and local income taxes in some or all of these jurisdictions. Further, unitholders may be subject to penalties for failure to comply with those requirements. We presently anticipate substantially all of our income will be generated in Kansas, Oklahoma, and Texas. Kansas and Oklahoma currently imposes a personal income tax. We may do business or own property in other states in the future. It is the responsibility of each unitholder to file all United States federal, state and local tax returns that may be required of such unitholder. Our counsel has not rendered an opinion on the state or local tax consequences of an investment in the common units.

The IRS may challenge our tax treatment related to transfers of units, which could change the allocation of items of income, gain, loss and deduction among our unitholders.

We prorate our items of income, gain, loss and deduction between transferors and transferees of our units each month based upon the ownership of our units on the first day of each month, instead of on the basis of the date a particular unit is transferred. If the IRS were to challenge this method or new Treasury regulations were issued, we may be required to change the allocation of items of income, gain, loss and deduction among our unitholders.

If the IRS contests the federal income tax positions we take, the market for our common units may be adversely affected, and the costs of any such contest will reduce cash available for distributions to our unitholders.

The IRS may adopt positions that differ from the positions we take. It may be necessary to resort to administrative or court proceedings to sustain some or all of our positions. A court may not agree with some or all of our positions. Any contest with the IRS may materially and adversely impact the market for our common units and the prices at which they trade. In addition, we will bear the costs of any contest with the IRS thereby reducing the cash available for distribution to our unitholders.

We have adopted certain valuation methodologies that may result in a shift of income, gain, loss and deduction between us and our public unitholders. The IRS may challenge this treatment, which could adversely affect the value of our common units.

When we issue additional units or engage in certain other transactions, we determine the fair market value of our assets and allocate any unrealized gain or loss attributable to such assets to the capital accounts of our unitholders and our General Partner. Although we may from time to time consult with professional appraisers regarding valuation matters, including the valuation of our assets, we make many of the fair market value estimates of our assets ourselves using a methodology based on the market value of our common units as a means to measure the fair market value of our assets. Our methodology may be viewed as understating the value of our assets. In that case, there may be a shift of income, gain, loss and deduction between certain unitholders and our General Partner, which may be unfavorable to such

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unitholders. Moreover, under our current valuation methods, subsequent purchasers of our common units may have a greater portion of their Internal Revenue Code Section 743(b) adjustment allocated to our tangible assets and a lesser portion allocated to our intangible assets. The IRS may challenge our valuation methods, or our allocation of Section 743(b) adjustment attributable to our tangible and intangible assets, and allocations of income, gain, loss and deduction between our General Partner and certain of our unitholders.

A successful IRS challenge to these methods or allocations could adversely affect the amount of taxable income or loss being allocated to our unitholders. It also could affect the amount of gain on the sale of common units by our unitholders and could have a negative impact on the value of our common units or result in audit adjustments to the tax returns of our unitholders without the benefit of additional deductions.

A unitholder whose units are loaned to a “short seller” to cover a short sale of units may be considered as having disposed of those units. If so, the unitholder would no longer be treated for tax purposes as a partner with respect to those units during the period of the loan and may recognize gain or loss from the disposition.

Because a unitholder whose units are loaned to a “short seller” to cover a short sale of units may be considered as having disposed of the loaned units, the unitholder may no longer be treated for tax purposes as a partner with respect to those units during the period of the loan to the short seller and the unitholder may recognize gain or loss from such disposition. Moreover, during the period of the loan to the short seller, any of our income, gain, loss or deduction with respect to those units may not be reportable by the unitholder and any cash distributions received by the unitholder as to those units could be fully taxable as ordinary income. Unitholders desiring to assure their status as partners and avoid the risk of gain recognition from a loan to a short seller are urged to modify any applicable brokerage account agreements to prohibit their brokers from borrowing their units.

Risks related to the Merger and ATLS Merger

Combining the two companies may be more difficult, costly, or time consuming than expected and the anticipated benefits and cost savings of the Merger may not be realized.

TRP and we have operated and, until the completion of the Merger, will continue to operate, independently. The success of the Merger, including anticipated benefits and cost savings, will depend, in part, on TRP’s ability to successfully combine and integrate our businesses. It is possible the pending nature of the Merger and/or the integration process could result in the loss of key employees; higher than expected costs; diversion of TRP’s and our management’s attention; increased competition; the disruption of either company’s ongoing businesses; or inconsistencies in standards, controls, procedures and policies that adversely affect the combined company’s ability to maintain relationships with customers, suppliers, employees and other business partners or to achieve the anticipated benefits and cost savings of the Merger. If TRP experiences difficulties with the integration process, the anticipated benefits of the Merger may not be realized fully or at all, or may take longer to realize than expected. Integration efforts between the two companies will also divert management’s attention and resources. These integration matters could have an adverse effect on each of us and TRP during this transition period and for an undetermined period after completion of the Merger on the combined company. In addition, the actual cost savings and other benefits of the Merger could be less than anticipated.

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The market price of TRP common units after the Merger will continue to fluctuate and may be affected by factors different from those affecting our common units currently.

Upon completion of the Merger, holders of our common units will become holders of TRP common units. The market price of TRP common units may fluctuate significantly following consummation of the Merger and holders of our common units could lose some or all of the value of their investment in TRP common units. In addition, the stock market has experienced significant price and volume fluctuations in recent times, which could have a material adverse effect on the market for, or liquidity of, the TRP common units, regardless of TRP’s actual operating performance. In addition, TRP’s business differs in important respects from ours, and accordingly, the results of operations of the combined company and the market price of TRP common units after the completion of the Merger may be affected by factors different from those currently affecting the independent results of our operations and TRP’s operations.

Sales of TRP common units before and after the completion of the Merger may cause the market price of TRP common units to fall.

The issuance of new TRP common units in connection with the Merger could have the effect of depressing the market price for TRP common units. In addition, holders of our common units may decide not to hold the TRP common units they will receive in the Merger. Such sales of TRP common units could have the effect of depressing the market price for TRP common units and may take place promptly following the Merger.

TRC, TRP and we are subject to litigation related to the Merger and ATLS Merger.

TRC, TRP and we have been subject to litigation related to the Merger and ATLS Merger (together the “Atlas Mergers”). Between October and December 2014, five of our public unitholders filed putative class action lawsuits, one of which has subsequently been voluntarily dismissed, against us, our General Partner, its managers, ATLS, TRC, TRP, TRP GP and MLP Merger Sub. In October and November 2014, two ATLS public unitholders filed putative class action lawsuits, one of which has subsequently been voluntarily dismissed, against ATLS, ATLS GP, its managers, TRC and GP Merger Sub. In January 2015, a public shareholder of TRC filed a putative class action and derivative suit against TRC, its directors and various other parties. The plaintiffs alleged a variety of causes of action challenging the Atlas Mergers. These matters, except for the January 2015 lawsuit and the two lawsuits that have been voluntarily dismissed, were settled, subject to court approval, pursuant to memoranda of understanding executed in February 2015. These memoranda of understanding are conditioned upon, among other things, the execution of appropriate stipulations of settlement. The stipulations of settlement will be subject to customary conditions, including, among other things, judicial approval of the proposed settlements contemplated by the memoranda of understanding. There can be no assurance that the parties will ultimately enter into stipulations of settlement, that the court will approve the settlements, that the settlements will not be terminated according to their terms or that some unitholders will not opt-out of the settlements. It is possible that additional claims beyond those that have already been filed will be brought by the current plaintiffs, members of the putative classes they purport to represent or by others in an effort to enjoin the Atlas Mergers or seek monetary relief. We cannot predict the outcome of these lawsuits, or others, nor can we predict the amount of time and expense that will be required to resolve the lawsuits. An unfavorable resolution of any such litigation surrounding the Atlas Mergers could delay or prevent their consummation. In addition, the costs of defending the litigation, even if resolved in TRC, TRP or our favor, could be substantial and such litigation could distract TRC, TRP and us from pursuing the consummation of the Atlas Mergers and other potentially beneficial business opportunities. For additional information regarding this litigation, see “Item 3. Legal Proceedings.”

ITEM 1B: UNRESOLVED STAFF COMMENTS

Not applicable

ITEM 2: PROPERTIES

A description of our properties is contained within Item 1, “Business–Properties.

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ITEM 3. LEGAL PROCEEDINGS

We and our subsidiaries are party to various routine legal proceedings arising in the ordinary course of our business. We do not believe that any of these actions, individually or in the aggregate, will have a material adverse effect on our financial condition or results of operations. See “Item 8: Financial Statements and Supplementary Data – Note 15”.

On October 13, 2014, we announced the transactions (the “Merger”) contemplated by the definitive Agreement and Plan of Merger (the “Merger Agreement”) between Atlas Pipeline Partners GP, LLC (our “General Partner”), Atlas Energy, L.P. (“ATLS”), Targa Resources Corp. (“TRC”), Targa Resources Partners LP (“TRP”), certain other parties and us. Concurrently with the Merger Agreement, ATLS announced that it had entered into a definitive merger agreement with TRC, pursuant to which TRC agreed to acquire ATLS through a merger of a newly formed wholly owned subsidiary of TRC with and into ATLS (the “ATLS Merger,” and, together with the Merger, the “Atlas Mergers”).

Following announcement of the Atlas Mergers, five (5) of our public unitholders filed putative class action lawsuits against us, the other parties to the Merger Agreement and certain of their managers. These lawsuits are styled (a) Michael Evnin v. Atlas Pipeline Partners, L.P., et al., in the Court of Common Pleas for Allegheny County, Pennsylvania; (b) William B. Federman Family Wealth Preservation Trust v. Atlas Pipeline Partners, L.P., et al., in the District Court of Tulsa County, Oklahoma; (the “Tulsa Lawsuit”) (c) Greenthal Living Trust U/A 01/26/88 v. Atlas Pipeline Partners, L.P., et al., in the Court of Common Pleas for Allegheny County, Pennsylvania; (d) Mike Welborn v. Atlas Pipeline Partners, L.P., et al., in the Court of Common Pleas for Allegheny County, Pennsylvania; and (e) Irving Feldbaum v. Atlas Pipeline Partners, L.P., et al., in the Court of Common Pleas for Allegheny County, Pennsylvania. The Evnin, Greenthal, Welborn and Feldbaum lawsuits have been consolidated as In re Atlas Pipeline Partners, L.P. Unitholder Litigation, Case No. GD-14-019245, in the Court of Common Pleas for Allegheny County, Pennsylvania (the “Consolidated APL Lawsuit”). The Tulsa Lawsuit was voluntarily dismissed on February 4, 2015.

Following announcement of the Atlas Mergers, two (2) public unitholders of ATLS also filed putative class action lawsuits against ATLS, ATLS Energy GP LLC, its managers, TRC and Trident GP Merger Sub LLC. These lawsuits are styled (a) Rick Kane v. Atlas Energy, L.P., et al., in the Court of Common Pleas for Allegheny County, Pennsylvania and (b) Jeffrey Ayers v. Atlas Energy, L.P., et al., in the Court of Common Pleas for Allegheny County, Pennsylvania. These lawsuits were consolidated as In re Atlas Energy, L.P. Unitholder Litigation, Case No. GD-14-019658, in the Court of Common Pleas for Allegheny County, Pennsylvania (the “Consolidated ATLS Lawsuit”), although the Kane lawsuit has since been voluntarily dismissed.

The lawsuits generally allege that the individual defendants breached their fiduciary duties and/or contractual obligations by, among other things, failing to obtain sufficient value for the ATLS and our unitholders in, respectively, each of the ATLS Merger and the Merger, agreeing to certain terms in each of the merger agreements that allegedly restrict the defendants’ ability to obtain a more favorable offer, favoring their self-interests over the interests of ATLS and our unitholders, and omitting material information from the Proxy Statements. The lawsuits further allege that those breaches were aided and abetted by some combination of ATLS, TRC, TRP, us or various affiliates of those entities named above. The plaintiffs seek, among other things, injunctive relief, unspecified compensatory and/or rescissory damages, attorney’s fees, other expenses, and costs.

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Additionally, a putative stockholder class action and derivative lawsuit, captioned Inspired Investors v. Perkins et. al., Cause No. 2015-04961, was filed purportedly on behalf of TRC shareholders in the District Court of Harris County, Texas on January 28, 2015 and amended on February 23, 2015. The lawsuit names ATLS and the individual members of the board of directors of TRC as defendants and TRC as a nominal defendant. The lawsuit generally alleges that the individual defendants breached their fiduciary duties by, among other things, approving the ATLS Merger, omitting purportedly material information from the registration statement on Form S-4 that TRC initially filed with the SEC on November 20, 2014 and most recently amended on January 22, 2015. The lawsuit seeks, among other things, injunctive relief, compensatory and rescissory damages, attorney’s fees, interest and costs.

On February 9, 2015, the defendants in the Consolidated APL Lawsuit reached an agreement with the plaintiffs regarding a settlement of that action. That agreement is reflected in a Memorandum of Understanding that outlines the terms of the parties’ agreement to settle, dismiss and release all claims which were or could have been asserted in the Consolidated APL Lawsuit, and is subject to court approval. Defendants agreed to the Memorandum of Understanding solely to avoid the uncertainty, risk, burden, and expense inherent in litigation and without admitting or denying that further supplemental disclosure is required under any applicable rule, statute, regulation or law. The Memorandum of Understanding is conditioned upon, among other things, the execution of an appropriate stipulation of settlement. The stipulation of settlement will be subject to customary conditions, including judicial approval of the proposed settlement contemplated by the Memorandum of Understanding, following notice to our unitholders. There can be no assurance that the parties will ultimately enter into a stipulation of settlement, that the court will approve the settlement, that the settlement will not be terminated according to its terms, or that some unitholders will not opt-out of the settlement.

In the event that the parties enter into a stipulation of settlement, a hearing will be scheduled at which the Court of Common Pleas for Allegheny County, Pennsylvania will consider the fairness, reasonableness, and adequacy of the proposed settlement. If the proposed settlement is finally approved by the court, it is anticipated that the settlement will result in a release of all claims that were or could have been brought by plaintiffs or any member of the putative class of our unitholders that they purport to represent challenging any aspect of or otherwise relating to the Transactions, any actions, deliberations or negotiations in connection with the Transactions or any agreements, disclosures, or events related thereto, and that the Consolidated APL Lawsuit will be dismissed with prejudice. In addition, in connection with the proposed settlement, the parties contemplate that plaintiffs’ counsel will file a petition for an award of attorneys’ fees and expenses, which the defendants may oppose. We or our successor will pay or cause to be paid those attorneys’ fees and expenses awarded by the court. The settlement will not affect the consideration to be paid to our unitholders in connection with the Merger.

On February 9, 2015, the defendants in the Consolidated ATLS Lawsuit reached an agreement with the plaintiffs regarding a settlement of that action. That agreement is reflected in a Memorandum of Understanding that outlines the terms of the parties’ agreement to settle, dismiss and release all claims which were or could have been asserted in the Consolidated ATLS Lawsuit, and is subject to court approval. Defendants agreed to the Memorandum of Understanding solely to avoid the uncertainty, risk, burden, and expense inherent in litigation and without admitting or denying that further supplemental disclosure is required under any applicable rule, statute, regulation or law. The Memorandum of Understanding is conditioned upon, among other things, the execution of an appropriate stipulation of settlement. The stipulation of settlement will be subject to customary conditions, including judicial approval of the proposed settlement contemplated by the Memorandum of Understanding, following notice to ATLS unitholders. There can be no assurance that the parties will ultimately enter into a stipulation of settlement, that the court will approve the settlement, that the settlement will not be terminated according to its terms, or that some unitholders will not opt-out of the settlement.

In the event that the parties enter into a stipulation of settlement, a hearing will be scheduled at which the Court of Common Pleas for Allegheny County, Pennsylvania will consider the fairness, reasonableness, and adequacy of the proposed settlement. If the proposed settlement is finally approved by the court, it is anticipated that the settlement will result in a release of all claims that were or could have been brought by plaintiffs or any member of the putative class of ATLS unitholders that they purport to represent challenging any aspect of or otherwise relating to the Transactions, any

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actions, deliberations or negotiations in connection with the Transactions or any agreements, disclosures, or events related thereto, and that the Consolidated ATLS Lawsuit will be dismissed with prejudice. In addition, in connection with the proposed settlement the parties contemplate that plaintiffs’ counsel will file a petition for an award of attorneys’ fees and expenses, which the defendants may oppose. ATLS or its successor will pay or cause to be paid those attorneys’ fees and expenses awarded by the court. The settlement will not affect, among other things, the consideration to be paid to ATLS’s unitholders in connection with the ATLS Merger.

ITEM 4: MINE SAFETY DISCLOSURE

Not applicable

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PART II

ITEM 5: MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED UNITHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Our common limited partner units are listed on the New York Stock Exchange under the symbol “APL.” At the close of business on February 25, 2015, the closing price for our common units was $27.45 and there were 92 record holders, one of which is the holder for all beneficial owners who hold in street name.

The following table sets forth the range of high and low sales prices of our common limited partner units and distributions declared by quarter per unit on our common limited partner units for the years ended December 31, 2014 and 2013:

	High		Low		Distributions Declared
2014
Fourth Quarter	$	37.96	$	22.36	$	0.64
Third Quarter		37.93		32.16		0.64
Second Quarter		34.58		30.55		0.63
First Quarter		35.62		28.88		0.62
2013
Fourth Quarter	$	40.02	$	32.50	$	0.62
Third Quarter		40.06		35.07		0.62
Second Quarter		39.94		33.05		0.62
First Quarter		34.82		31.55		0.59

Our Cash Distribution Policy

Our partnership agreement requires we distribute 100% of available cash, for each calendar quarter, to our General Partner and common limited partners within 45 days following the end of such calendar quarter in accordance with their respective percentage interests. Available cash consists generally of all our cash receipts, less cash disbursements and net additions to reserves, including any reserves required under debt instruments for future principal and interest payments.

Our General Partner is granted discretion by our partnership agreement to establish, maintain and adjust reserves for future operating expenses, debt service, maintenance capital expenditures, rate refunds and distributions for the next four quarters. These reserves are not restricted by magnitude, but only by type of future cash requirements with which they can be associated. When our General Partner determines our quarterly distributions, it considers current and expected reserve needs along with current and expected cash flows to identify the appropriate sustainable distribution level.

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Available cash is initially distributed 98% to our common limited partners and 2% to our General Partner. These distribution percentages are modified to provide for incentive distributions to be paid to our General Partner if quarterly distributions to common unitholders exceed specified targets, as follows:

Minimum Distributions Per Unit Per Quarter		Percent of Available Cash in Excess of Minimum Allocated to General Partner(1)
$	0.42	15%
	0.52	25%
	0.60	50%

(1) Percent allocated to our General Partner includes 2% general partner interest in addition to incentive distributions.

We make distributions of available cash to common unitholders regardless of whether the amount distributed is less than the minimum quarterly distribution. Incentive distributions are generally defined as all cash distributions paid to our General Partner that are in excess of 2% of the aggregate amount of cash being distributed. Our General Partner, the holder of all our incentive distribution rights, has agreed to allocate up to $3.75 million of its incentive distribution rights per quarter back to us after the General Partner receives the initial $7.0 million per quarter of incentive distribution rights. The General Partner’s incentive distributions paid for the years ended December 31, 2014 and 2013 were $22.7 million and $15.0 million, respectively.

For information concerning units authorized for issuance under our long-term incentive plans, see “Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Unitholder Matters.”

ITEM 6: SELECTED FINANCIAL DATA

The following table should be read together with our consolidated financial statements and notes thereto included within “Item 8: Financial Statements and Supplementary Data” and “Item 7: Management’s Discussion and Analysis of Financial Condition and Results of Operations” of this report. We have derived the selected financial data set forth in the table for each of the years ended December 31, 2014, 2013 and 2012 and at December 31, 2014 and 2013 from our consolidated financial statements appearing elsewhere in this report, which have been audited by Grant Thornton LLP, independent registered public accounting firm. We derived the financial data for the years ended December 31, 2011 and 2010 from our consolidated financial statements, which were audited by Grant Thornton LLP and are not included elsewhere within this report.

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	Years Ended December 31,
	2014			2013			2012			2011			2010
	(in thousands)
Statements of operations data:
Revenue:
Natural gas and liquids sales	$	2,621,428		$	1,959,144		$	1,137,261		$	1,268,195		$	890,048
Transportation, processing and other fees		201,073			165,177			66,722			43,799			41,093
Derivative gain (loss), net		131,064			(28,764	)		31,940			(20,452	)		(5,945	)
Other income, net		21,555			11,292			10,097			11,192			10,392
Total revenues		2,975,120			2,106,849			1,246,020			1,302,734			935,588
Costs and expenses:
Natural gas and liquids cost of sales		2,291,914			1,690,382			927,946			1,047,025			720,215
Operating expenses		113,606			94,527			62,098			55,519			49,731
General and administrative(1)		73,943			60,856			47,206			36,357			34,021
Other expenses(2)		6,073			20,005			15,069			1,040			—
Depreciation and amortization		202,543			168,617			90,029			77,435			74,897
Interest		93,147			89,637			41,760			31,603			87,273
Total costs and expenses		2,781,226			2,124,024			1,184,108			1,248,979			966,137
Equity income (loss) in joint ventures		(14,007	)		(4,736	)		6,323			5,025			4,920
Gain (loss) on asset dispositions and other(3)		47,381			(1,519	)		—			256,272			(10,729	)
Goodwill impairment loss		—			(43,866	)		—			—			—
Loss on early extinguishment of debt		—			(26,601	)		—			(19,574	)		(4,359	)
Income (loss) from continuing operations before tax		227,268			(93,897	)		68,235			295,478			(40,717	)
Income tax expense (benefit)		(2,376	)		(2,260	)		176			—			—
Income (loss) from continuing operations		229,644			(91,637	)		68,059			295,478			(40,717	)
Income (loss) from discontinued operations net of tax		—			—			—			(81	)		321,155
Net income (loss)		229,644			(91,637	)		68,059			295,397			280,438
Income attributable to non-controlling interests(4)		(13,164	)		(6,975	)		(6,010	)		(6,200	)		(4,738	)
Preferred unit imputed dividend effect		(45,513	)		(29,485	)		—			—			—
Preferred unit dividends in kind		(42,552	)		(23,583	)		—			—			—
Preferred unit dividends		(8,233	)		—			—			(389	)		(780	)
Net income (loss) attributable to common limited partners and the General Partner	$	120,182		$	(151,680	)	$	62,049		$	288,808		$	274,920

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	Years Ended December 31,
	2014		2013			2012		2011			2010
	(in thousands, except per unit data)
Allocation of net income (loss) attributable to:
Common limited partner interest:
Continuing operations	$	93,684	$	(165,923	)	$	52,391	$	281,449		$	(45,347	)
Discontinued operations		—		—			—		(79	)		315,021
		93,684		(165,923	)		52,391		281,370			269,674
General Partner interest:
Continuing operations		26,498		14,243			9,658		7,440			(888	)
Discontinued operations		—		—			—		(2	)		6,134
		26,498		14,243			9,658		7,438			5,246
Net income (loss) attributable to:
Continuing operations		120,182		(151,680	)		62,049		288,889			(46,235	)
Discontinued operations		—		—			—		(81	)		321,155
	$	120,182	$	(151,680	)	$	62,049	$	288,808		$	274,920
Net income (loss) attributable to common limited partners per unit:
Basic:
Continuing operations	$	0.95	$	(2.23	)	$	0.95	$	5.22		$	(0.85	)
Discontinued operations		—		—			—		—			5.92
	$	0.95	$	(2.23	)	$	0.95	$	5.22		$	5.07
Diluted(5):
Continuing operations	$	0.95	$	(2.23	)	$	0.95	$	5.22		$	(0.85	)
Discontinued operations		—		—			—		—			5.92
	$	0.95	$	(2.23	)	$	0.95	$	5.22		$	5.07

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	Years Ended December 31,
	2014			2013			2012			2011			2010
	(in thousands)
Balance sheet data (at period end):
Property, plant and equipment, net	$	3,249,973		$	2,724,192		$	2,200,381		$	1,567,828		$	1,341,002
Total assets		4,824,733			4,327,845			3,065,638			1,930,812			1,764,848
Total debt, including current portion		1,939,110			1,707,310			1,179,918			524,140			565,974
Total equity		2,518,467			2,259,905			1,606,408			1,236,228			1,041,647
Cash flow data:
Net cash provided by (used in):
Operating activities	$	292,529		$	210,844		$	174,638		$	102,867		$	106,427
Investing activities		(524,339	)		(1,443,083	)		(1,006,641	)		67,763			594,753
Financing activities		234,999			1,233,755			835,233			(170,626	)		(702,037	)
Other financial data (unaudited):
Gross margin from continuing operations (6)	$	536,475		$	434,188		$	278,148		$	264,923		$	210,580
EBITDA (7)		522,958			164,357			200,024			404,435			443,212
Adjusted EBITDA (7)		382,024			324,870			220,207			181,026			209,799
Distributable cash flow (7)		256,297			203,863			146,013			129,938			86,871
Maintenance capital expenditures	$	25,680		$	21,919		$	19,021		$	18,247		$	10,921
Expansion capital expenditures (8)		622,067			428,641			354,512			227,179			35,715
Total capital expenditures	$	647,747		$	450,560		$	373,533		$	245,426		$	46,636

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	Years Ended December 31,
	2014		2013		2012		2011		2010
Operating data (unaudited):
Oklahoma
SouthOK system(9):
Gathered gas volume (MCFD)		435,455		406,073		350,593		103,328		84,455
Processed gas volume (MCFD)		409,741		378,732		325,453		98,126		78,606
Residue gas volume (MCFD)		374,342		324,025		275,315		80,330		64,138
NGL volume (BPD)		29,033		35,088		29,988		11,433		9,218
Condensate volume (BPD)		662		525		531		423		416
WestOK system:
Gathered gas volume (MCFD)		570,800		500,756		369,035		268,329		228,684
Processed gas volume (MCFD)		542,960		475,441		348,041		254,397		214,695
Residue gas volume (MCFD)		497,170		438,611		322,751		230,907		193,200
NGL volume (BPD)		25,357		20,971		14,505		13,635		12,395
Condensate volume (BPD)		2,475		1,887		1,360		898		697
Texas
SouthTX system:
Gathered gas volume (MCFD)		120,506		132,826		N/A		N/A		N/A
Processed gas volume (MCFD)		118,712		131,745		N/A		N/A		N/A
Residue gas volume (MCFD)		95,678		105,207		N/A		N/A		N/A
NGL volume (BPD)		14,523		16,711		N/A		N/A		N/A
Condensate volume (BPD)		158		77		N/A		N/A		N/A
WestTX system(9):
Gathered gas volume (MCFD)		480,722		357,524		275,946		212,775		178,111
Processed gas volume (MCFD)		460,823		328,678		249,221		196,412		163,475
Residue gas volume (MCFD)		340,212		244,294		179,539		133,857		105,982
NGL volume (BPD)		59,807		41,920		32,314		29,052		26,678
Condensate volume (BPD)		1,911		1,657		1,524		1,500		1,289
Barnett system:
Average throughput volumes (MCFD)		20,133		21,356		22,935		N/A		N/A

(1) Includes non-cash compensation (income) expense of $25.1 million, $19.3 million, $11.6 million, $3.3 million and $3.5 million for the years ended December 31, 2014, 2013, 2012, 2011 and 2010, respectively; and includes compensation reimbursement to affiliates.

(2) Includes acquisition costs in connection with the Targa Resources LP Merger for the year ended December 31, 2014 (see “Item 8. Financial Statements and Supplementary Data – Note 3”) and the TEAK and Cardinal Acquisitions for the years ended December 31, 2013 and 2012, respectively (see “Item 8. Financial Statements and Supplementary Data – Note 4”).

(3) Includes the gain on sale of two subsidiaries in 2014 which held an aggregate 20% interest in WTLPG (see “Item 8. Financial Statements and Supplementary Data – Note 5”) and the gain on sale of our 49% non-controlling interest in Laurel Mountain in 2011.

(4) Represents Anadarko Petroleum Corporation’s (“Anadarko” – NYSE: APC) non-controlling interest in the operating results of the WestOK and WestTX systems and MarkWest Oklahoma Gas Company, LLC’s (“MarkWest”) non-controlling interest in Centrahoma Processing, LLC (“Centrahoma”).

(5) For the years ended December 31, 2013 and 2010, approximately 1,240,000 and 300,000 phantom units, respectively, were excluded from the computation of diluted earnings attributable to common limited partners per unit because the inclusion of such phantom units would have been anti-dilutive. For the year ended December 31, 2013, approximately 9,110,000 Class D Preferred Units were excluded from the computation of diluted earnings attributable to common limited partners per unit because the inclusion of such preferred units would have been anti-dilutive. For the year ended December 31, 2010, 75,000 unit options were excluded from the computation of diluted earnings attributable to common limited partners per unit because the inclusion of such unit options would have been anti-dilutive.

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(6) We define gross margin from continuing operations as natural gas and liquids sales revenue plus transportation, processing and other fees less natural gas and liquids cost of sales, subject to certain non-cash adjustments. Natural gas and liquids cost of sales include the cost of natural gas, NGLs and condensate we purchase from third parties. Gross margin, as we define it, does not include operating expenses and derivative gain (loss) related to undesignated hedges, as movements in gross margin generally do not result in directly correlated movements in these categories. Operating expenses generally include the costs required to operate and maintain our pipelines and processing facilities, including salaries and wages, repair and maintenance expense, real estate taxes and other overhead costs. Our management views gross margin as an important performance measure of core profitability for our operations and as a key component of our internal financial reporting. We believe investors benefit from having access to the same financial measures that our management uses. The following table reconciles net income (loss) to gross margin from continuing operations (in thousands):

RECONCILIATION OF GROSS MARGIN FROM CONTINUING OPERATIONS

	Years Ended December 31,
	2014			2013			2012			2011			2010
	(in thousands)
Net income (loss)	$	229,644		$	(91,637	)	$	68,059		$	295,397		$	280,438
Derivative (gain) loss, net		(131,064	)		28,764			(31,940	)		20,452			5,340
Other income, net		(21,555	)		(11,292	)		(10,097	)		(11,192	)		(9,787	)
Operating expenses(10)		119,679			114,532			77,167			56,559			49,731
General and administrative(1)		73,943			60,856			47,206			36,357			34,021
Depreciation and amortization		202,543			168,617			90,029			77,435			74,897
Interest		93,147			89,637			41,760			31,603			87,273
Income tax expense (benefit)		(2,376	)		(2,260	)		176			—			—
Equity (income) loss in joint ventures		14,007			4,736			(6,323	)		(5,025	)		(4,920	)
(Gain) loss on asset dispositions and other(3)		(47,381	)		1,519			—			(256,272	)		10,729
Goodwill impairment loss		—			43,866			—			—			—
Loss on early extinguishment of debt		—			26,601			—			19,574			4,359
Non-cash linefill (gain) loss (11)		5,888			249			2,111			(46	)		(346	)
(Income) loss from discontinued operations		—			—			—			81			(321,155	)
Gross margin from continuing operations	$	536,475		$	434,188		$	278,148		$	264,923		$	210,580

(7) The following table reconciles net income (loss) to EBITDA; EBITDA to Adjusted EBITDA; and Adjusted EBITDA to Distributable Cash Flow (See “Item 7. Management’s Discussion and Analysis –How We Evaluate Our Operations” for definitions of our Non-GAAP financial information) (in thousands):

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RECONCILIATION OF EBITDA, ADJUSTED EBITDA AND DISTRIBUTABLE CASH FLOW

	Years Ended December 31,
	2014			2013			2012			2011			2010
	(in thousands)
Net income (loss)	$	229,644		$	(91,637	)	$	68,059		$	295,397		$	280,438
Adjustments:
Interest expense(12)		93,147			89,637			41,760			31,603			87,877
Income tax expense (benefit)		(2,376	)		(2,260	)		176			—			—
Depreciation and amortization		202,543			168,617			90,029			77,435			74,897
EBITDA		522,958			164,357			200,024			404,435			443,212
Adjustments:
Income attributable to non-controlling interests from continuing operations(4)		(13,164	)		(6,975	)		(6,010	)		(6,200	)		(4,738	)
Non-controlling interest depreciation, amortization and interest expense(13)		(3,672	)		(2,778	)		—			—			—
Equity (income) loss in joint ventures		14,007			4,736			(6,323	)		(5,025	)		(4,920	)
Distributions from joint ventures		5,264			7,400			7,200			4,448			11,066
(Gain) loss on asset dispositions and other(14)		(47,381	)		1,519			—			(256,191	)		(301,373	)
Goodwill impairment loss		—			43,866			—			—			—
Loss on early extinguishment of debt		—			26,601			—			19,574			4,359
Non-cash (gain) loss on derivatives		(141,025	)		28,440			(23,283	)		4,538			(10,166	)
Premium expense on derivative instruments		6,500			17,083			17,759			12,219			21,123
Unrecognized economic impact of acquisitions(15)		—			1,023			1,698			—			—
Other expenses(2)		6,073			20,005			15,395			—			—
Net cash derivative early termination expense(16)		—			—			—			—			22,401
Non-cash compensation expense		25,116			19,344			11,636			3,274			3,484
Non-cash linefill (gain) loss (11)		5,888			249			2,111			(46	)		(346	)
Minimum volume adjustment		1,460			—			—			—			—
Discontinued operations adjustments(17)		—			—			—			—			25,697
Adjusted EBITDA		382,024			324,870			220,207			181,026			209,799
Adjustments:
Interest expense(18)		(93,147	)		(89,637	)		(41,760	)		(31,603	)		(87,835	)
Preferred dividend obligation		(8,233	)		—			—			(389	)		(780	)
Amortization of deferred finance costs		7,082			6,965			4,672			4,480			6,186
Proceeds remaining from asset sale(19)		—			—			—			5,850			—
Premium expense on derivative instruments(18)		(6,500	)		(17,083	)		(17,759	)		(12,219	)		(28,320	)
Other costs		—			—			(326	)		1,040			—
Maintenance capital, net(20)		(24,929	)		(21,252	)		(19,021	)		(18,247	)		(12,179	)
Distributable Cash Flow	$	256,297		$	203,863		$	146,013		$	129,938		$	86,871

(8) Represents total expansion capital expenditures which includes the portion attributable to our joint interest partners.

(9) Operating data for SouthOK and WestTX represents 100% of the operating activity for these systems. SouthOK gathered volumes include volumes gathered by MarkWest and processed through the Arkoma facilities.

(10) Operating expenses include operating expenses and other expenses.

(11) Represents the non-cash impact of commodity price movements on pipeline linefill.

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(12) Interest expense in 2010 includes interest expense related to interest rate swaps.

(13) Represents the depreciation, amortization and interest expense included in income attributable to non-controlling interest for MarkWest interest in Centrahoma.

(14) For the year ended December 31, 2014, includes the gain on sale of two subsidiaries which held an aggregate 20% interest in WTLPG (see “Item 8. Financial Statements and Supplementary Data – Note 5”). For the year ended December 31, 2011, includes the gain on the sale of our non-controlling interest in Laurel Mountain. For the year ended December 31, 2010, includes the gain on the sale of Elk City gathering system and related processing facilities and expenses related to the sale of our non-controlling interest in Laurel Mountain.

(15) Represents the earnings from the (a) TEAK Acquisition (see “Item 8. Financial Statements and Supplementary Data – Note 4”) from April 1, 2013, the effective date of the purchase, through May 7, 2013, the closing date of the purchase, and (b) the Cardinal Acquisition from December 1, 2012, the effective date of the purchase, through December 20, 2012, the closing date of the purchase. These earnings were recorded as a reduction of the purchase price of each respective acquisition.

(16) During the year ended December 31, 2010, we made net payments of $33.7 million, which resulted in a net cash expense recognized of $33.7 million related to the early termination of derivative contracts principally entered into as proxy hedges for the prices received on the ethane and propane portion of our NGL equity volume.

(17) Includes depreciation, amortization, and interest expense; non-cash (gain) loss on derivatives; non-recurring cash derivative early termination; and premium expense on derivative instruments recorded in discontinued operations.

(18) For the year ended December 31, 2010, includes amounts recorded within discontinued operations.

(19) Net proceeds remaining from the sale of Laurel Mountain Midstream, LLC after repayment of the amount outstanding on our revolving credit facility, redemption of our 8.125% Senior Notes due 2015 and purchase of the 8.75% Senior Notes due 2018.

(20) Net of non-controlling interest maintenance capital of $752 thousand and $667 thousand for the years ended December 31, 2014 and 2013, respectively.

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ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion provides information to assist in understanding our financial condition and results of operations. This discussion should be read in conjunction with our consolidated financial statements and related notes thereto appearing elsewhere in this report.

General

We are a publicly-traded Delaware limited partnership formed in 1999 whose common units are listed on the New York Stock Exchange under the symbol “APL” and Class E cumulative redeemable perpetual preferred units (“Class E Preferred Units”) are listed under the symbol “APLPE.”

We conduct our business in the midstream segment of the natural gas industry through two reportable segments: Oklahoma Gathering and Processing (“Oklahoma”) and Texas Gathering and Processing (“Texas”).

As a result of the May 2014 sale of two former subsidiaries holding an interest in West Texas LPG Pipeline Limited Partnership (“WTLPG”) (see “–Recent Events”), we realigned the management of our business from our previously reportable segments of “Gathering and Processing” and “Transportation and Treating” into the two new reportable segments.

The Oklahoma segment consists of our SouthOK and WestOK operations, which are comprised of natural gas gathering, processing and treating assets servicing drilling activity in the Anadarko, Ardmore and Arkoma Basins. These operations were formerly included with the previous Gathering and Processing segment. Revenues are primarily derived from the sale of residue gas and NGLs and the gathering, processing and treating of natural gas within the state of Oklahoma.

The Texas segment consists of (1) our SouthTX and WestTX operations, which are comprised of natural gas gathering and processing assets servicing drilling activity in the Permian Basin and the Eagle Ford Shale play in southern Texas; and (2) natural gas gathering assets located in the Barnett Shale play in Texas. These assets were formerly included with the previous Gathering and Processing segment. Revenues are primarily derived from the sale of residue gas and NGLs and the gathering and processing of natural gas within the state of Texas.

The previous Transportation and Treating segment, which consisted of (1) our gas treating operations, which own contract gas treating facilities located in various shale plays; and (2) the former subsidiaries’ interest in WTLPG, which was sold in May 2014 (see “–Recent Events”). This segment has been eliminated and the financial information is now included within Corporate and Other. On February 27, 2015, we agreed to transfer 100% of our interest in natural the gas gathering assets located in the Appalachian Basin in Tennessee to our affiliate, Atlas Resource Partners, L.P. (NYSE: ARP) (“ARP”) (see “–Subsequent Events”). Our Tennessee gathering assets were formerly included in the previous Gathering and Processing Segment, but are now included within Corporate and Other.

As of December 31, 2014, our Oklahoma segment owns and has interests in 10 natural gas processing plants with aggregate capacity of approximately 1,000 MMCFD, a gas treating facility and approximately 7,600 miles of active natural gas gathering systems located in Oklahoma and Kansas. As of December 31, 2014, our Texas segment owns and has interests in seven natural gas processing plants with aggregate capacity of approximately 1,050 MMCFD and approximately 4,600 miles of active natural

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gas gathering systems located in Texas. Our gathering systems have receipt points consisting primarily of individual well connections and, secondarily, central delivery points, which are linked to multiple wells from which we gather natural gas from oil and natural gas wells; process the raw natural gas into residue gas by extracting NGLs and removing impurities; and transport natural gas to interstate and public utility pipelines for delivery to customers.

Our Oklahoma and Texas segments are all located in or near areas of abundant and long-lived natural gas production. In Oklahoma, our operations are in or near the Golden Trend, Mississippian Limestone and Hugoton field in the Anadarko Basin, the South Central Oklahoma Oil Province (“SCOOP”) play in the Ardmore Basin and the Woodford Shale play in the Arkoma Basin. In Texas, our operations are in or near the Spraberry and Wolfberry Trends, which are oil plays with associated natural gas in the Permian Basin; the Barnett Shale; and the Eagle Ford Shale. We believe we have significant scale in each of our primary service areas. We provide gathering, processing and treating services to the wells connected to our systems, primarily under long-term contracts. As a result of the location and capacity of our gathering, processing and treating assets, we believe we are strategically positioned to capitalize on the drilling activity in our service areas.

Recent Events

In December 2014, we completed the connection between the Velma and Arkoma systems within the SouthOK system. The connection accommodates the increased demand for processing capacity behind the Velma system, where the emerging SCOOP play has attracted significant producer interest. The connection between Velma and Arkoma offers us more operational flexibility and helps us better utilize our processing capacity across the SouthOK system.

On October 13, 2014, Atlas Energy, L.P. (“ATLS”), Atlas Pipeline Partners GP, LLC, (the “General Partner”), and we entered into a definitive merger agreement with Targa Resources Corp. (“TRC”), Targa Resources Partners, LP (“TRP”) and certain other parties (the “Merger Agreement”), pursuant to which TRP agreed to acquire us through a merger of a newly-formed, wholly-owned subsidiary of TRP with and into us (the “Merger”). Upon completion of the Merger, holders of our common units will have the right to receive (i) 0.5846 TRP common units and (ii) $1.26 in cash for each of our common units.

Concurrently with the Merger Agreement, ATLS announced that it entered into a definitive merger agreement with TRC (the “ATLS Merger Agreement”), pursuant to which TRC agreed to acquire ATLS through a merger of a newly formed wholly-owned subsidiary of TRC with and into ATLS (the “ATLS Merger”). Upon completion of the ATLS Merger, holders of ATLS common units will have the right to receive (i) 0.1809 TRC shares of common stock, par value $0.001 per share, and (ii) $9.12 in cash, without interest, for each ATLS common unit.

Concurrently with the Merger Agreement and the ATLS Merger Agreement, ATLS agreed to (i) transfer its assets and liabilities, other than those related to us, to Atlas Energy Group, LLC (“Atlas Energy Group”), which is currently a subsidiary of ATLS and (ii) immediately prior to the ATLS Merger, effect a pro rata distribution to the ATLS unitholders of common units of Atlas Energy Group representing a 100% interest in Atlas Energy Group (the “Spin-Off”).

Following the announcement on October 13, 2014 of the Merger, we, our General Partner, ATLS, TRC, TRP, Targa Resources GP LLC, Trident MLP Merger Sub LLC and the members of our General Partner’s board of directors were named as defendants in five putative unitholder class action lawsuits challenging the Merger, one of which has subsequently been voluntarily dismissed. In addition, ATLS, Atlas Energy GP LLC (“ATLS GP”), TRC, Trident GP Merger Sub LLC and members of ATLS GP’s board of directors were named as defendants in two putative unitholder class action lawsuits challenging the ATLS Merger, one of which has subsequently been voluntarily dismissed. The lawsuits

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filed generally allege that the individual defendants breached their fiduciary duties and/or contractual obligations by, among other things, failing to obtain sufficient value for our unitholders and ATLS unitholders, respectively, in the Merger and ATLS Merger. The plaintiffs seek, among other things, injunctive relief, unspecified compensatory and/or rescissory damages, attorney’s fees, other expenses and costs.

ATLS has also been named as a defendant in a putative class action and derivative lawsuit brought on January 28, 2015 and amended on February 23, 2015, by a shareholder of TRC against TRC and its directors. The lawsuit generally alleges that the individual defendants breached their fiduciary duties by, among other things, approving the ATLS Merger and failing to disclose purportedly material information concerning the ATLS Merger. The lawsuit seeks, among other things, injunctive relief, compensatory and rescissory damages, attorney’s fees, interest and costs.

All of the above referenced lawsuits, except for the January 2015 lawsuit and the two lawsuits that have been voluntarily dismissed, were settled, subject to court approval, pursuant to memoranda of understanding executed in February 2015, which are conditioned upon, among other things, the execution of an appropriate stipulations of settlement. The stipulations of settlement will be subject to customary conditions, including, among other things, judicial approval of the proposed settlements contemplated by the memoranda of understanding. There can be no assurance that the parties will ultimately enter into stipulations of settlement, that the court will approve the settlements, that the settlements will not be terminated according to their terms or that some unitholders will not opt-out of the settlements.

At this time, we cannot reasonably estimate the range of possible loss as a result of the lawsuits. See “Item 3: Legal Proceedings” for more information regarding these lawsuits.

On September 15, 2014, we placed in service a new 200 MMCFD cryogenic processing plant, known as the Edward plant, in our WestTX system in the Permian Basin of West Texas, increasing the WestTX system capacity to 655 MMCFD.

On August 28, 2014, we entered into a Second Amended and Restated Credit Agreement (the “Revised Credit Agreement”) which, among other changes:

• extended the maturity date to August 28, 2019;

• increased the revolving credit commitment from $600 million to $800 million and the incremental revolving credit amount from $200 million to $250 million;

• reduced by 0.25% the applicable margin used to determine interest rates for LIBOR Rate Loans, as defined in the Revised Credit Agreement, and for Base Rate Loans, as defined in the Revised Credit Agreement, depending on the Consolidated Funded Debt Ratio, as defined in the Revised Credit Agreement;

• allows us to request incremental term loans, provided the sum of any revolving credit commitments and incremental term loans may not exceed $1.05 billion; and

• changed the per annum interest rate on borrowings to (i) the higher of (a) the prime rate, (b) the federal funds rate plus 0.50% and (c) the LIBOR rate plus 1.0%, or (ii) the LIBOR rate for the applicable period, in each case plus the applicable margin.

On June 25, 2014, we placed in service a new 200 MMCFD cryogenic processing plant, known as the Silver Oak II plant, in our SouthTX system in the Eagle Ford Shale play of southern Texas, increasing the SouthTX system capacity to 400 MMCFD.

On May 14, 2014, we completed the sale of two subsidiaries, which held an aggregate 20% interest in WTLPG, to a subsidiary of Martin Midstream Partners L.P. (NYSE: MMLP). We received $131.0 million in proceeds, net of selling costs and working capital adjustments, which were used to pay down our revolving credit facility. As a result of the sale, we recorded a $47.8 million gain on asset dispositions on our consolidated statements of operations for the year ended December 31, 2014, respectively (see “Item 8. Financial Statements and Supplementary Data – Note 5 – West Texas LPG Pipeline Limited Partnership”).

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On May 12, 2014, we entered into an Equity Distribution Agreement (the “2014 EDA”) with Citigroup Global Markets Inc., Wells Fargo Securities, LLC and MLV & Co. LLC as sales agents. Pursuant to the 2014 EDA, we may offer and sell from time to time through our sales agents, common units having an aggregate value of up to $250.0 million. Sales are at market prices prevailing at the time of the sale. However, we are currently restricted from selling common units by the Merger Agreement. During the year ended December 31, 2014, we issued 3,558,005 common units under the 2014 EDA for proceeds of $121.6 million, net of $1.2 million in commissions paid to the sales agents (see “Item 8. Financial Statements and Supplementary Data – Note 6 – Common Units”).

On May 1, 2014, we placed in service a new 120 MMCFD cryogenic processing plant, known as the Stonewall plant, in our SouthOK system in the Arkoma Basin of Oklahoma, increasing the SouthOK system capacity to 500 MMCFD. A planned expansion of the Stonewall plant to raise the processing capacity to 200 MMCFD is anticipated to be completed in the first quarter of 2015.

On March 17, 2014, we issued 5,060,000 of our 8.25% Class E Preferred Units to the public at an offering price of $25.00 per Class E Preferred Unit. We received $122.3 million in net proceeds, which were used to pay down the revolving credit facility (see “Item 8. Financial Statements and Supplementary Data – Note 6 – Class E Preferred Units”).

Subsequent Events

On January 9, 2015, we declared a cash distribution of $0.64 per unit on our outstanding common limited partner units, representing the cash distribution for the quarter ended December 31, 2014. The $62.2 million distribution, including $8.1 million to the General Partner for its general partner interest and incentive distribution rights, was paid on February 13, 2015 to unitholders of record at the close of business on January 21, 2015 (see “Item 8. Financial Statements and Supplementary Data – Note 6 –Cash Distributions”).

On January 15, 2015, we paid a cash distribution of $0.515625 per unit, or approximately $2.6 million, on our Class E Preferred Units, representing the cash distribution for the period October 15, 2014 through January 14, 2015 (see “Item 8. Financial Statements and Supplementary Data – Note 6 –Class E Preferred Units”).

On January 15, 2015, TRP announced cash tender offers to redeem any and all of our outstanding $500.0 million aggregate principal amount of our 6.625% unsecured senior notes due October 1, 2020 (“6.625% Senior Notes”); $400.0 million aggregate principal amount of our 4.75% unsecured senior notes due November 15, 2021 (“4.75% Senior Notes”); and $650.0 million aggregate principal amount of our 5.875% unsecured senior notes due August 1, 2023 (“5.875% Senior Notes”). TRP made the cash tender offers in connection with, and conditioned upon, the consummation of the Merger (see “–Recent Events”). The Merger, however, is not conditioned on the consummation of the tender offers. On February 2, 2015, TRP announced as of January 29, 2015, it had received tenders pursuant to its previously announced cash tender offers on January 15, 2015 from holders representing:

• less than a majority of the total outstanding $500.0 million of our 6.625% Senior Notes;

• approximately 98.3% of the total outstanding $400.0 million of our 4.75% Senior Notes; and

• approximately 91.0% of the total outstanding $650.0 million of our 5.875% Senior Notes.

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Also on February 2, 2015, TRP announced a change of control cash tender offer for any and all of the outstanding $500.0 million of our 6.625% Senior Notes. TRP made the change of control cash tender offer in connection with, and conditioned upon, the consummation of the Merger (see “–Recent Events”). The Merger, however, is not conditioned on the consummation of the change in control cash tender offer. The change in control cash tender offer was made independently of TRP’s January 15, 2015 cash tender offers.

On January 22, 2015, we exercised our right under the certificate of designation of the Class D Preferred Units (“Class D Certificate of Designation”) to convert all outstanding Class D Preferred Units and unpaid distributions into common limited partner units, based upon the Execution Date Unit Price of $29.75 per unit, as defined by the Class D Certificate of Designation. As a result of the conversion, 15,389,575 common limited partner units were issued (see “Item 8. Financial Statements and Supplementary Data – Note 6 – Class D Preferred Units”).

On January 27, 2015, we delivered notice of our intention to redeem all outstanding shares of our Class E Preferred Units. The redemption of the Class E Preferred Units will occur immediately prior to the close of the Merger (see “–Recent Events”). We expect the Merger to close on February 27, 2015 and, accordingly, the redemption would also be on February 27, 2015. The Class E Preferred Units will be redeemed at a redemption price of $25.00 per unit, plus an amount equal to all accumulated and unpaid distributions on the Class E Preferred Units as of the redemption date. TRP has agreed to deposit the funds for such redemption with our paying agent (see “Item 8. Financial Statements and Supplementary Data – Note 6 –Class E Preferred Units”).

On February 20, 2015, we held a special meeting, where holders of a majority of our common units approved the Merger. In addition, at special meetings held on the same day: (i) a majority of the holders of ATLS common units approved the ATLS Merger and (ii) a majority of the holders of TRC common stock approved the issuance of TRC shares in connection with the Merger. Completion of each of the ATLS Merger and the Spin-Off are also conditioned on the parties standing ready to complete the Merger.

On February 27, 2015, we agreed to transfer 100% of our interest in the Tennessee gas gathering assets to our affiliate, ARP, for $1.0 million plus working capital adjustments, concurrent with the closing of the Merger on February 27, 2015.

Acquisitions

In May 2013, we completed the acquisition of 100% of the equity interests of TEAK Midstream, LLC (“TEAK”) for $974.7 million in cash, including final purchase price adjustments, less cash received (the “TEAK Acquisition”) (see “Item 8. Financial Statements and Supplementary Data – Note 4 – TEAK Midstream, LLC”). The assets acquired, which are referred to as the SouthTX assets, include the following gas gathering and processing facilities in the Eagle Ford shale region of southern Texas:

• the Silver Oak I plant, which is a 200 MMCFD cryogenic processing facility;

• a second 200 MMCFD cryogenic processing facility, the Silver Oak II plant, which was placed in service in June 2014 (see “–Recent Events);

• 265 miles of primarily 20-24 inch gathering and residue lines;

• approximately 275 miles of low pressure gathering lines;

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• a 75% interest in T2 LaSalle Gathering Company L.L.C. (“T2 LaSalle”), which owns a 62 mile, 24-inch gathering line;

• a 50% interest in T2 Eagle Ford Gathering Company L.L.C. (“T2 Eagle Ford”), which owns a 45 mile, 16-inch gathering pipeline; a 71 mile 24-inch gathering line; and a 50 mile residue pipeline; and

• a 50% interest in T2 EF Cogeneration Holdings L.L.C. (“T2 Co-Gen”), which owns a cogeneration facility.

In December 2012, we acquired 100% of the equity interests held by Cardinal Midstream, LLC (“Cardinal”) in three wholly-owned subsidiaries for $598.9 million in cash, including final purchase price adjustments, less cash received (the “Cardinal Acquisition”) (see “Item 8. Financial Statements and Supplementary Data – Note 4 – Cardinal Midstream, LLC”). The assets of these companies represented the majority of the operating assets of Cardinal and include gas gathering, processing and treating facilities in Arkansas, Louisiana, Oklahoma and Texas (included within the SouthOK system) as follows:

• the Tupelo plant, which is a 120 MMCFD cryogenic processing facility;

• approximately 60 miles of gathering pipeline;

• the East Rockpile treating facility, a 250 GPM amine treating plant;

• a fixed fee contract gas treating business that includes 15 amine treating plants and two propane refrigeration plants; and

• a 60% interest in a joint venture known as Centrahoma Processing, LLC (“Centrahoma”). The remaining 40% interest is owned by MarkWest Oklahoma Gas Company, LLC, (“MarkWest”), a wholly-owned subsidiary of MarkWest Energy Partners, L.P. (NYSE: MWE). Centrahoma owns the following assets:

• the Coalgate and Atoka plants, which are cryogenic processing facilities with a combined current processing capacity of approximately 100 MMCFD;

• the Stonewall plant, which is a 160 MMCFD cryogenic processing facility that was under construction on the date of acquisition and subsequently placed in service in May 2014 (see “–Recent Events”); and

• 15 miles of NGL pipeline.

In June 2012, we acquired a gas gathering system and related assets in the Barnett Shale in Tarrant County, Texas for an initial net purchase price of $18.0 million. The system is used to facilitate gathering of newly-acquired natural gas production of our affiliate, ARP. We do not directly gather natural gas for ARP; rather, we gather natural gas for a third party that purchases ARP’s production. ARP’s general partner is wholly-owned by ATLS, and two members of our General Partner’s managing board are members of ARP’s board of directors.

In February 2012, we acquired a gas gathering system and related assets at our WestOK system for an initial net purchase price of $19.0 million. We agreed to pay up to an additional $12.0 million, payable in two equal amounts, subject to delivery of certain minimum volumes of natural gas from a specified area and within certain specified time periods. Sufficient volumes were achieved in December 2012 and we paid the first contingent payment of $6.0 million in January 2013. In connection with this acquisition, we received assignment of the gas purchase agreements for natural gas then currently gathered on the acquired system.

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Disposition

On May 14, 2014, we completed the sale of two subsidiaries, which held an aggregate 20% interest in WTLPG (see “–Recent Events”).

Recent Trends and Uncertainties

The midstream natural gas industry links the exploration and production of natural gas and the delivery of its components to end-use markets; and provides natural gas gathering, compression, dehydration, treating, conditioning, processing, fractionation and transportation services. This industry group is generally characterized by regional competition based on the proximity of gathering systems and processing plants to natural gas producing wells.

We face competition in obtaining natural gas supplies for our processing and related services operations. Competition for natural gas supplies is based primarily on the location of gas gathering facilities and gas processing plants, operating efficiency and reliability, and the ability to obtain a satisfactory price for products recovered. Competition for customers is based primarily on price, delivery capabilities, quality of assets, flexibility, service history and maintenance of high-quality customer relationships. Many of our competitors operate as master limited partnerships and enjoy a cost of capital comparable to, and in some cases lower than, ours. Other competitors, such as major oil and gas and pipeline companies, have capital resources and control supplies of natural gas substantially greater than ours. We believe the primary difference between us and some of our competitors is that we provide an integrated and responsive package of midstream services, while some of our competitors provide only certain services. We believe offering an integrated package of services, while remaining flexible in the types of contractual arrangements we offer producers, allows us to compete more effectively for new natural gas supplies in our regions of operations.

Our results of operations and financial condition substantially depend upon the price of natural gas, NGLs and crude oil (see “Item 8. Financial Statements and Supplementary Data – Note 2 – Revenue Recognition”). We believe future natural gas prices will be influenced by supply deliverability, the severity of winter and summer weather and the level of United States economic growth. Based on historical trends, we generally expect NGL prices to follow changes in crude oil prices over the long term, which we believe will in large part be determined by the level of production from major crude oil exporting countries and the demand generated by growth in the world economy. Crude oil prices have declined significantly during the last half of 2014 primarily due to rising levels of crude oil production in the U.S. and around the world, combined with weaker global demand for crude oil. A sustained decline in the price of crude oil may negatively impact drilling activities in our service areas. Lower drilling levels and shut-in wells over a sustained period would have a negative effect on natural gas volumes gathered, processed and treated.

We are exposed to commodity prices as a result of being paid for certain services in the form of natural gas, NGLs and condensate rather than cash and from purchasing natural gas from certain producers at the wellhead. We closely monitor the risks associated with commodity price changes on our future operations and, where appropriate, use various commodity-based derivative instruments such as natural gas, crude oil and NGL financial contracts to hedge a portion of the value of our assets and operations from such price risks. See “Item 7A. Quantitative and Qualitative Disclosures About Market Risk – Commodity Price Risk” for further discussion of commodity price risk.

Currently, there is a significant level of uncertainty in the financial markets. This uncertainty presents additional potential risks to us. These risks include the availability and costs associated with our borrowing capabilities and ability to raise additional capital, and an increase in the volatility of the price of our common units.

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How We Evaluate Our Operations

Our principal revenue is generated from the gathering, processing and treating of natural gas and the sale of natural gas, NGLs and condensate (see “Item 8. Financial Statements and Supplementary Data – Note 2 – Revenue Recognition”). Our profitability is a function of the difference between the revenues we receive and the costs associated with conducting our operations, including the cost of natural gas, NGLs and condensate we purchase as well as operating and general and administrative costs and the impact of our commodity hedging activities. Because commodity price movements tend to impact both revenues and costs, increases or decreases in our revenues alone are not necessarily indicative of increases or decreases in our profitability. Variables that affect our profitability include:

• the volumes of natural gas we gather, process and treat, which in turn, depend upon the number of wells connected to our gathering systems, the amount of natural gas the wells produce, and the demand for natural gas, NGLs and condensate;

• the price of the natural gas we gather; process and treat; and the NGLs and condensate we recover and sell, which is a function of the relevant supply and demand in the mid-continent area of the United States;

• the NGL and BTU content of the gas gathered and processed;

• the contract terms with each producer; and

• the efficiency of our gathering systems and processing and treating plants.

Our management uses a variety of financial measures and operational measurements other than our GAAP financial statements to analyze our performance. These include: (1) volumes, (2) operating expenses and (3) certain non-GAAP measures, consisting of gross margin, EBITDA, adjusted EBITDA and distributable cash flow. Our management views these measures as important performance measures of core profitability for our operations and as key components of our internal financial reporting. We believe investors benefit from having access to the same financial measures that our management uses.

Volumes. Our profitability is impacted by our ability to add new sources of natural gas supply to offset the natural decline of existing volumes from natural gas wells that are connected to our gathering, processing and treating systems. This is achieved by connecting new wells and adding new volumes in existing areas of production. Our performance at our plants is also significantly impacted by the quality of the natural gas we process, the NGL content of the natural gas and the plants’ recovery capability. In addition, we monitor fuel consumption and losses because they have a significant impact on the gross margin realized from our processing operations.

Operating Expenses. Operating expenses generally include the costs required to operate and maintain our pipelines and processing facilities, including salaries and wages, repair and maintenance expense, ad valorem taxes and other overhead costs.

Gross Margins. We define gross margin as natural gas and liquids sales revenue plus transportation, processing and other fee revenues less natural gas and liquids cost of sales, subject to certain non-cash adjustments. Natural gas and liquids cost of sales include the cost of natural gas, NGLs and condensate we purchase from third parties. Gross margin, as we define it, does not include operating expenses and derivative gain (loss) related to undesignated hedges, as movements in gross margin generally do not result in directly correlated movements in these categories.

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Gross margin is a non-GAAP measure. The GAAP measure most directly comparable to gross margin is net income. Gross margin is not an alternative to GAAP net income and has important limitations as an analytical tool. Investors should not consider gross margin in isolation or as a substitute for analysis of our results as reported under GAAP. Because gross margin excludes some, but not all, items that affect net income and is defined differently by different companies in our industry, our definition of gross margin may not be comparable to gross margin measures of other companies, thereby diminishing its utility (see “Item 6. Selected Financial Data” for a reconciliation of net income to gross margin).

EBITDA and Adjusted EBITDA. EBITDA represents net income (loss) before interest expense, income taxes, depreciation and amortization. Adjusted EBITDA is calculated by adding to EBITDA other non-cash items such as compensation expenses associated with unit issuances, principally to directors and employees; impairment charges; and certain cash items such as non-recurring cash derivative early termination expense. The GAAP measure most directly comparable to EBITDA and Adjusted EBITDA is net income. EBITDA and Adjusted EBITDA are not intended to represent cash flow and do not represent the measure of cash available for distribution. Our method of computing Adjusted EBITDA may not be the same method used to compute similar measures reported by other companies. The Adjusted EBITDA calculation is similar to the Consolidated EBITDA calculation utilized within the financial covenants under our credit facility, with the exception that Adjusted EBITDA includes certain non-cash items specifically excluded under our credit facility and excludes the capital expansion add back included in Consolidated EBITDA as defined in the credit facility (see “–Revolving Credit Facility”).

Certain items excluded from EBITDA and Adjusted EBITDA are significant components in understanding and assessing an entity’s financial performance, such as cost of capital and historic costs of depreciable assets. We have included information concerning EBITDA and Adjusted EBITDA because they provide investors and management with additional information to better understand our operating performance and are presented solely as a supplemental financial measure. EBITDA and Adjusted EBITDA should not be considered as alternatives to, or more meaningful than, net income or cash flow as determined in accordance with GAAP or as indicators of our operating performance or liquidity. The economic substance behind our use of Adjusted EBITDA is to measure the ability of our assets to generate cash sufficient to pay interest costs, support our indebtedness and make distributions to our unit holders.

Distributable Cash Flow. We define distributable cash flow as net income plus tax, depreciation and amortization; amortization of deferred financing costs included in interest expense; and non-cash gain (losses) on derivative contracts, less income attributable to non-controlling interests, preferred unit dividends, maintenance capital expenditures, gains (losses) on asset sales and other non-cash gains (losses).

Distributable cash flow is a significant performance metric used by our management and by external users of our financial statements, such as investors, commercial banks and research analysts, to compare basic cash flows generated by us to the cash distributions we expect to pay our unitholders. Using this metric, management and external users of our financial statements can compute the ratio of distributable cash flow per unit to the declared cash distribution per unit to determine the rate at which the distributable cash flow covers the distribution. Distributable cash flow is also an important financial measure for our unitholders since it serves as an indicator of our success in providing a cash return on investment. Specifically, this financial measure indicates to investors whether or not we are generating cash flow at a level that can sustain or support an increase in our quarterly distribution rates. Distributable cash flow is also a quantitative standard used throughout the investment community with respect to publicly-traded partnerships because the value of a unit of such an entity is generally determined by the unit’s yield, which in turn is based on the amount of cash distributions the entity pays to a unitholder.

The GAAP measure most directly comparable to distributable cash flow is net income. Distributable cash flow should not be considered as an alternative to GAAP net income or GAAP cash flows from operating activities. Distributable cash flow is not a presentation made in accordance with GAAP and has important limitations as an analytical tool. Investors should not consider distributable cash flow in isolation or as a substitute for analysis of our results as reported under GAAP. Because distributable cash flow excludes some, but not all, items that affect net income and is defined differently by different companies in our industry, our definition of distributable cash flow may not be comparable to similarly titled measures of other companies, thereby diminishing its utility (see “Item 6. Selected Financial Data” for a reconciliation of net income to EBITDA, Adjusted EBITDA and distributable cash flow).

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Results of Operations

The following tables illustrate selected pricing before the effect of derivatives and volumetric information for the periods indicated:

	Years Ended December 31,
	2014		2013		Percent Change			2012		Percent Change
Pricing:
Weighted average prices:
NGL price per gallon—Conway hub	$	0.89	$	0.82		8.5	%	$	0.78		5.1	%
NGL price per gallon—Mt. Belvieu hub		0.85		0.85		—	%		0.96		(11.5	)%
Oklahoma
Natural gas sales ($/MMBTU):
SouthOK		4.07		3.46		17.6	%		2.60		33.1	%
WestOK		4.02		3.42		17.5	%		2.66		28.6	%
NGL sales ($/gallon):
SouthOK		0.96		0.79		21.5	%		0.78		1.3	%
WestOK		1.02		1.04		(1.9	)%		0.89		16.9	%
Condensate sales ($/barrel):
SouthOK		84.99		94.02		(9.6	)%		94.82		(0.8	)%
WestOK		84.14		87.17		(3.5	)%		84.76		2.8	%
Texas
Natural gas sales ($/MMBTU):
SouthTX		4.22		N/A		N/A			N/A		N/A
WestTX		4.01		3.38		18.6	%		2.54		33.1	%
NGL sales ($/gallon):
SouthTX		0.86		0.79		8.9	%		N/A		N/A
WestTX		0.86		0.92		(6.5	)%		0.98		(6.1	)%
Condensate sales ($/barrel):
SouthTX		80.34		93.75		(14.3	)%		N/A		N/A
WestTX		89.14		98.55		(9.5	)%		89.40		10.2	%
Weighted Average
Natural gas sales ($/MMBTU):		4.02		3.44		16.9	%		2.62		31.3	%
NGL sales ($/gallon):		0.93		0.91		2.2	%		0.90		1.1	%
Condensate sales ($/barrel):		85.52		91.90		(6.9	)%		87.88		4.6	%

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	Years Ended December 31,
	2014		2013		Percent Change			2012		Percent Change
Operating data:
Oklahoma
SouthOK system(1)
Gathered gas volume (MCFD)		435,455		406,073		7.2	%		350,593		15.8	%
Processed gas volume (MCFD)		409,741		378,732		8.2	%		325,453		16.4	%
Residue Gas volume (MCFD)		374,342		324,025		15.5	%		275,315		17.7	%
NGL volume (BPD)		29,033		35,088		(17.3	)%		29,988		17.0	%
Condensate volume (BPD)		662		525		26.1	%		531		(1.1	)%
WestOK system:
Gathered gas volume (MCFD)		570,800		500,756		14.0	%		369,035		35.7	%
Processed gas volume (MCFD)		542,960		475,441		14.2	%		348,041		36.6	%
Residue Gas volume (MCFD)		497,170		438,611		13.4	%		322,751		35.9	%
NGL volume (BPD)		25,357		20,971		20.9	%		14,505		44.6	%
Condensate volume (BPD)		2,475		1,887		31.2	%		1,360		38.8	%
Texas
SouthTX system:
Gathered gas volume (MCFD)		120,506		132,826		(9.3	)%		N/A		N/A
Processed gas volume (MCFD)		118,712		131,745		(9.9	)%		N/A		N/A
Residue Gas volume (MCFD)		95,678		105,207		(9.1	)%		N/A		N/A
NGL volume (BPD)		14,523		16,711		(13.1	)%		N/A		N/A
Condensate volume (BPD)		158		77		105.2	%		N/A		N/A
WestTX system(1):
Gathered gas volume (MCFD)		480,722		357,524		34.5	%		275,946		29.6	%
Processed gas volume (MCFD)		460,823		328,678		40.2	%		249,221		31.9	%
Residue Gas volume (MCFD)		340,212		244,294		39.3	%		179,539		36.1	%
NGL volume (BPD)		59,807		41,920		42.7	%		32,314		29.7	%
Condensate volume (BPD)		1,911		1,657		15.3	%		1,524		8.7	%
Barnett system:
Average throughput volume – (MCFD)		20,133		21,356		(5.7	)%		22,935		(6.9	)%

(1) Operating data for SouthOK and WestTX represent 100% of operating activity for these systems. SouthOK gathered volumes include volumes gathered by MarkWest and processed through our facilities.

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Year Ended December 31, 2014 Compared to Year Ended December 31, 2013

The following table and discussion is a summary of our consolidated results of operations for the years ended December 31, 2014 and 2013 (in thousands):

	Years Ended December 31,									Percent Change
	2014			2013			Variance
Gross margin(1)
Natural gas and liquids sales	$	2,621,428		$	1,959,144		$	662,284			33.8	%
Transportation, processing and other fees		201,073			165,177			35,896			21.7	%
Less: non-cash line fill loss(2)		(5,888	)		(249	)		(5,639	)		(2,264.7	)%
Less: natural gas and liquids cost of sales		2,291,914			1,690,382			601,532			35.6	%
Gross margin		536,475			434,188			102,287			23.6	%
Gross margin %		19.0	%		20.4	%
Expenses:
Operating expenses		113,606			94,527			19,079			20.2	%
General and administrative(3)		73,943			60,856			13,087			21.5	%
Other expenses(4)		6,073			20,005			(13,932	)		(69.6	)%
Depreciation and amortization		202,543			168,617			33,926			20.1	%
Interest expense		93,147			89,637			3,510			3.9	%
Total expenses		489,312			433,642			55,670			12.8	%
Other income items:
Derivative gain (loss), net		131,064			(28,764	)		159,828			555.7	%
Other income, net		21,555			11,292			10,263			90.9	%
Non-cash line fill loss(2)		(5,888	)		(249	)		(5,639	)		(2,264.7	)%
Equity loss in joint ventures		(14,007	)		(4,736	)		(9,271	)		(195.8	)%
Goodwill impairment loss		—			(43,866	)		43,866			100.0	%
Gain (loss) on asset disposition		47,381			(1,519	)		48,900			3,219.2	%
Loss on early extinguishment of debt		—			(26,601	)		26,601			100.0	%
Income tax benefit		2,376			2,260			116			5.1	%
Income attributable to non-controlling interests(5)		(13,164	)		(6,975	)		(6,189	)		(88.7	)%
Preferred unit imputed dividend effect		(45,513	)		(29,485	)		(16,028	)		(54.4	)%
Preferred unit dividends in kind		(42,552	)		(23,583	)		(18,969	)		(80.4	)%
Preferred unit dividends		(8,233	)		—			(8,233	)		(100.0	)%
Net income (loss) attributable to common limited partners and General Partner	$	120,182		$	(151,680	)	$	271,862			179.2	%
Non-GAAP financial data:
EBITDA(1)	$	522,958		$	164,357		$	358,601			218.2	%
Adjusted EBITDA(1)		382,024			324,870			57,154			17.6	%
Distributable cash flow(1)		256,297			203,863			52,434			25.7	%

(1) Gross margin, EBITDA, Adjusted EBITDA and distributable cash flow are non-GAAP financial measures (see “–How We Evaluate Our Operations” and “Item 6. Selected Financial Data –Reconciliation of Net Income to Gross Margin and –Reconciliation of Net Income to EBITDA, Adjusted EBITDA and Distributable Cash Flow”).

(2) Includes the non-cash impact of commodity price movements of pipeline linefill.

(3) General and administrative includes compensation reimbursement to affiliates.

(4) Includes Merger costs in connection with the Targa Resources LP Merger for the year ended December 31, 2014 (see “Item 8. Financial Statements and Supplementary Data –Note 3”) and the TEAK and Cardinal Acquisitions for the years ended December 31, 2013 and 2012, respectively (see “Item 8. Financial Statements and Supplementary Data –Note 4”).

(5) Represents Anadarko’s non-controlling interest in the operating results of the WestOK and WestTX systems and MarkWest’s non-controlling interest in Centrahoma.

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Gross margin

Gross margin from natural gas and liquids sales and transportation, processing and other fees and the related natural gas and liquids cost of sales for the year ended December 31, 2014 increased primarily due to higher production volumes. Overall gross margin percentages are lower for the year ended December 31, 2014 due to the conversion of keep-whole contracts to POP during the period, which reduced our NGL-related commodity price risk, but negatively impacted our gross margin rate.

• Oklahoma. For the year ended December 31, 2014, Oklahoma gross margins increased $42.3 million compared to the prior year. Gathering and processing volumes across the Oklahoma segment for the year ended December 31, 2014 increased as a result of increased production on the gathering systems, which continue to be expanded to meet producer demand.

• Texas. For the year ended December 31, 2014, Texas gross margins increased $61.0 million compared to the prior year. The WestTX system’s gathering and processing volumes for the year ended December 31, 2014 increased compared to the prior year period due to continued increased volumes from Pioneer Natural Resources Company (NYSE: PXD) and others as a result of their continued drilling programs, and due to the April 2013 start-up of the Driver plant. Gross margin also increased compared to the prior year due to the May 2013 acquisition of the SouthTX system as part of the TEAK Acquisition (see “–Acquisitions”).

Expenses

Operating expenses for the year ended December 31, 2014 increased due to continued expansion of our gathering and processing systems and volume growth across both the Oklahoma and Texas segments (see “–Recent Events”). In addition, operating expenses also increased for the year ended December 31, 2014 due to the May 2013 acquisition of the SouthTX system as part of the TEAK Acquisition (see “–Acquisitions”).

General and administrative expense, including amounts reimbursed to affiliates, increased for the year ended December 31, 2014 mainly due to a $5.8 million increase in non-cash compensation (see “Item 8: Financial Statements and Supplementary Data –Note 17”) and a $6.3 million increase in salaries and wages. These increases are partially due to the increase in the number of employees as a result of the TEAK Acquisition during 2013 (see “–Acquisitions”) and our plant and gathering system expansion projects (see “–Recent Events”).

Other expenses for the year ended December 31, 2014 represent costs related to the Merger (see “–Recent Events”). Other expenses for the year ended December 31, 2013 represent acquisition costs related to the TEAK Acquisition (see “–Acquisitions”).

Depreciation and amortization expense for the year ended December 31, 2014 increased primarily due to growth capital expenditures incurred subsequent to December 31, 2013.

Interest expense for the year ended December 31, 2014 increased primarily due to $6.9 million additional interest related to our 4.75% Senior Notes; $4.2 million of additional interest related to our 5.875% Senior Notes; and $2.0 million increased interest on the senior secured revolving credit facility; offset by $4.2 million reduced interest expense on the 8.75% unsecured senior notes due June 15, 2018 (“8.75% Senior Notes”) and a $5.1 million increase in capitalized interest expense. The increase in the interest on the 4.75% Senior Notes and the 5.875% Senior Notes is due to their issuance during 2013 (see “Item 8. Financial Statements and Supplementary Data – Note 14 – Senior Notes”). The decrease in the interest for the 8.75% Senior Notes is due to their redemption in February 2013 (see “Item 8. Financial

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Statements and Supplementary Data – Note 14 – Senior Notes”). The increase in the interest on the senior secured revolving credit facility is due to increased borrowings compared to the prior year (see “Item 8. Financial Statements and Supplementary Data – Note 14 –Revolving Credit Facility”). The increase in capitalized interest is due to increased capital expenditures over the same period last year (see further discussion of capital expenditures under “–Capital Requirements”).

Other income items

Derivative gain (loss), net for the year ended December 31, 2014 had a $169.5 million favorable mark-to-market gain (loss) compared to the prior year primarily due to a $141.0 million mark-to-market gain in the current year as a result of a decrease in forward prices, related to falling oil prices, combined with an increase in forward prices during the prior year, which resulted in $28.4 million mark-to-market losses on derivatives; offset by a $9.6 million unfavorable variance in cash settlements in the current year compared to the prior year mainly due to favorable propane swap settlements in the prior year.

While we utilize either quoted market prices or observable market data to calculate the fair value of natural gas and crude oil derivatives, valuations of NGL fixed price swaps are based on a forward price curve modeled on a regression analysis of quoted price curves for NGLs for similar geographic locations, and valuations of NGL options are based on forward price curves developed by third-party financial institutions. The use of unobservable market data for NGL fixed price swaps and NGL options has no impact on the settlement of these derivatives. However, a change in management’s estimated fair values for these derivatives could impact net income, although it would have no impact on liquidity or capital resources (see “Item 8. Financial Statements and Supplementary Information – Note 2 – Fair Value of Financial Instruments” for further discussion of derivative instrument valuations). We recognized a $74.9 million mark-to-market gain and a $19.7 million mark-to-market loss on derivatives valued based upon unobservable inputs for the year ended December 31, 2014 and 2013, respectively. We enter into derivative instruments solely to hedge our forecasted natural gas, NGLs and condensate sales against the variability in expected future cash flows attributable to changes in market prices. See further discussion of derivatives under “Item 7A: Quantitative and Qualitative Disclosures About Market Risk.”

Other income had a favorable variance for the year ended December 31, 2014 compared to the prior year primarily due to an arrangement with respect to our SouthTX system.

Non-cash linefill gain (loss) had an unfavorable variance for the year ended December 31, 2014 compared to the prior year primarily due to the changes in the forward prices as described for the derivative gain (loss), net (see “Item 8. Financial Statements and Supplementary Information – Note 12 – NGL Linefill”).

Equity loss in joint ventures had an unfavorable variance for the year ended December 31, 2014 mainly due to $5.0 million in income in the prior year related to WTLPG, which was sold on May 14, 2014 (see “–Recent Events”) and due to a $4.3 million increase in the loss on the T2 Eagle Ford joint venture. The T2 LaSalle and T2 Eagle Ford joint ventures are structured to earn revenues equal to their operating costs, exclusive of depreciation expense. The loss primarily represents depreciation expense.

Income attributable to non-controlling interests for the year ended December 31, 2014 increased $5.0 million in our Oklahoma segment primarily due to Anadarko’s non-controlling interest in higher net income for the WestOK joint venture, and due to MarkWest’s non-controlling interest in higher net income for the Centrahoma joint venture. The increase in net income of the WestOK joint venture was principally due to higher gross margins on the sale of commodities, resulting from higher volumes. The increase in net income of the Centrahoma joint venture was partially due to the start-up of the Stonewall Plant on May 1, 2014 (see “–Recent Events”), which resulted in higher processing revenues during the year.

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Income attributable to non-controlling interests for the year ended December 31, 2014 increased $1.2 million in our Texas segment primarily due to Anadarko’s non-controlling interest in higher net income for the WestTX joint venture. The increase in net income of the WestTX joint venture was principally due to higher gross margins on the sale of commodities, resulting from higher volumes.

Preferred unit imputed dividend effect for the year ended December 31, 2014 represents the accretion of the beneficial conversion discount of the Class D Preferred Units which were issued in May 2013 (see “Item 8. Financial Statements and Supplementary Data – Note 6 –Class D Preferred Units”).

Preferred unit dividends in-kind for the year ended December 31, 2014 represent the distributions to the Class D Preferred Units (see “Item 8. Financial Statements and Supplementary Data – Note 6 – Class D Preferred Units”). The unfavorable variance compared to the prior year is due to an increased distribution per unit and increased number of preferred units outstanding over the prior year.

Preferred unit dividends for the year ended December 31, 2014 represent the cash distributions to the Class E Preferred Units (see “–Class E Preferred Units”).

Non-GAAP financial data

EBITDA had a favorable variance for the year ended December 31, 2014 compared to the prior year mainly due to mark-to-market gains on derivatives in the current year compared to mark-to-market losses on derivatives in the prior year, as discussed above in “–Other income items,” and due to the favorable gross margin variance, as discussed above in “–Gross margin.”

Adjusted EBITDA had a favorable variance for the year ended December 31, 2014 compared to the prior year mainly due to the favorable gross margin variance, as discussed above in “–Gross Margin.”

Distributable cash flow had a favorable variance for the year ended December 31, 2014 compared to the prior year mainly due to the favorable Adjusted EBITDA variance, as discussed above, partially offset by increased preferred unit dividends, as discussed above in “–Other income items.”

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Year Ended December 31, 2013 Compared to Year Ended December 31, 2012

The following table and discussion is a summary of our consolidated results of operations for the years ended December 31, 2013 and 2012 (in thousands):

	Years Ended December 31,									Percent Change
	2013			2012			Variance
Gross margin(1)
Natural gas and liquids sales	$	1,959,144		$	1,137,261		$	821,883			72.3	%
Transportation, processing and other fees		165,177			66,722			98,455			147.6	%
Less: non-cash line fill loss(2)		(249	)		(2,111	)		1,862			88.2	%
Less: natural gas and liquids cost of sales		1,690,382			927,946			762,436			82.2	%
Gross margin		434,188			278,148			156,040			56.1	%
Gross margin %		20.4	%		23.1	%
Expenses:
Operating expenses		94,527			62,098			32,429			52.2	%
General and administrative(3)		60,856			47,206			13,650			28.9	%
Other expenses(4)		20,005			15,069			4,936			32.8	%
Depreciation and amortization		168,617			90,029			78,588			87.3	%
Interest expense		89,637			41,760			47,877			114.6	%
Total expenses		433,642			256,162			177,480			69.3	%
Other income items:
Derivative gain (loss), net		(28,764	)		31,940			(60,704	)		(190.1	)%
Other income, net		11,292			10,097			1,195			11.8	%
Non-cash line fill loss(2)		(249	)		(2,111	)		1,862			88.2	%
Equity income (loss) in joint ventures		(4,736	)		6,323			(11,059	)		(174.9	)%
Goodwill impairment loss		(43,866	)		—			(43,866	)		(100.0	)%
Loss on asset disposition		(1,519	)		—			(1,519	)		(100.0	)%
Loss on early extinguishment of debt		(26,601	)		—			(26,601	)		(100.0	)%
Income tax benefit (expense)		2,260			(176	)		2,436			1,384.1	%
Income attributable to non-controlling interests(5)		(6,975	)		(6,010	)		(965	)		(16.1	)%
Preferred unit imputed dividend effect		(29,485	)		—			(29,485	)		(100.0	)%
Preferred unit dividends in kind		(23,583	)		—			(23,583	)		(100.0	)%
Net income (loss) attributable to common limited partners and General Partner	$	(151,680	)	$	62,049		$	(213,729	)		(344.5	)%
Non-GAAP financial data:
EBITDA(1)	$	164,357		$	200,024		$	(35,667	)		(17.8	)%
Adjusted EBITDA(1)		324,870			220,207			104,663			47.5	%
Distributable cash flow(1)		203,863			146,013			57,850			39.6	%

(1) Gross margin, EBITDA, Adjusted EBITDA and distributable cash flow are non-GAAP financial measures (see “–How We Evaluate Our Operations” and “Item 6. Selected Financial Data –Reconciliation of Net Income to Gross Margin and – Reconciliation of Net Income to EBITDA, Adjusted EBITDA and Distributable Cash Flow”).

(2) Includes the non-cash impact of commodity price movements of pipeline linefill.

(3) General and administrative also includes compensation reimbursement to affiliates.

(4) Includes acquisition costs in connection with the Cardinal and TEAK Acquisitions for the year ended December 31, 2013 (see “Item 8. Financial Statements and Supplementary Data –Note 4”).

(5) Represents Anadarko’s non-controlling interest in the operating results of the WestOK and WestTX systems and MarkWest’s non-controlling interest in Centrahoma.

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Gross margin

Gross margin from natural gas and liquids sales and transportation, processing and other fees and the related natural gas and liquids cost of sales for the year ended December 31, 2013 increased primarily due to higher production volumes, including the new volumes in 2013 from the SouthOK and SouthTX systems due to the Cardinal and TEAK Acquisitions (see “–Acquisitions”). Overall gross margin percentages are lower for the year ended December 31, 2013 due to the increase in natural gas prices compared to the prior year, which increased at a higher rate than NGL prices, negatively impacting the gross margin rate achieved on Keep-Whole contracts.

• Oklahoma. For the year ended December 31, 2013, Oklahoma gross margins increased $89.5 million compared to the prior year primarily due to increased production from the V-60 plant, which was placed into service in July 2012 and from the new volumes in 2013 from the SouthOK system due to the Cardinal Acquisition (see “–Acquisitions”). Also, gathering and processing volumes on the WestOK system increased for the year ended December 31, 2013 compared to the prior year primarily due to increased production on the gathering systems and the start-up of the Waynoka II plant, which was placed into service in September 2012

• Texas. For the year ended December 31, 2013, Texas gross margins increased $56.8 million compared to the prior year primarily due to new volumes in 2013 from the SouthTX system acquired in the TEAK Acquisition (see “–Acquisitions”). Also, WestTX system’s gathering and processing volumes for the year ended December 31, 2013 increased compared to the prior year due to increased volumes from Pioneer Natural Resources Company (NYSE: PXD) and others as a result of their continued drilling programs; and the start-up of the Driver plant in April 2013.

Expenses

Operating expenses, comprised primarily of plant operating expenses and transportation and compression expenses, for the year ended December 31, 2013 increased compared to the prior year mainly due to $11.7 million in additional expenses from the Arkoma plants, within the SouthOK system, acquired in the Cardinal Acquisition (see “–Acquisitions”); $6.9 million in additional expenses from the SouthTX systems acquired in the TEAK Acquisition (see “–Acquisitions”); a $7.0 million increase on the WestOK system primarily due to increased gathered volumes in comparison to the prior year period, as discussed above in “Gross margin”; and a $4.5 million increase on the WestTX system primarily due to increased gathered volumes from Pioneer Natural Resources Company and other producers and the start-up of the Driver plant in April 2013.

General and administrative expense, including amounts reimbursed to affiliates, increased for the year ended December 31, 2013 mainly due to a $7.7 million increase in share-based compensation related to phantom units granted to employees (see “Item 8: Financial Statements and Supplementary Data – Note 17”); and a $3.6 million increase in salaries and wages partially due to the increase in the number of employees as a result of the Cardinal and TEAK Acquisitions (see “–Acquisitions”).

Other expenses for the year ended December 31, 2013 increased mainly due to $19.3 million in acquisition costs related to the TEAK Acquisition in 2013 compared to $15.4 million in acquisition costs related to the Cardinal Acquisition in the prior year (see “–Acquisitions”).

Depreciation and amortization expense for the year ended December 31, 2013 increased compared to the prior year primarily due to $31.8 million additional expense related to assets acquired in the Cardinal Acquisition (see “–Acquisitions”); $26.9 million additional expense related to assets acquired in the TEAK Acquisition (see “–Acquisitions”); and due to growth capital expenditures incurred subsequent to December 31, 2012.

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Interest expense for the year ended December 31, 2013 increased compared to the prior year primarily due to $33.9 million additional interest related to our 5.875% Senior Notes; $26.7 million increase in interest expense associated with our 6.625% Senior Notes; and $12.1 million additional interest related to our 4.75% Senior Notes; partially offset by $27.0 million reduced interest on the 8.75% Senior Notes. The increase in the interest on the 5.875% Senior Notes and the 4.75% Senior Notes is due to their issuance in 2013 (see “–Senior Notes”). The increase in the interest on the 6.625% Senior Notes is due to an additional issuance of $175.0 million in December 2012. The decrease in the interest for the 8.75% Senior Notes is due to their redemption in February 2013 (see “Item 8. Financial Statements and Supplementary Data – Note 14 –Senior Notes”).

Other income items

Derivative gain (loss), net for the year ended December 31, 2013 compared to the prior year had a $60.7 unfavorable variance primarily due to a $49.4 million unfavorable variance on the non-cash fair value revaluation of commodity derivative contracts in 2013 compared to the prior year because of a $20.9 million mark-to-market gain in the prior year resulting from a decrease in prices during the prior year period; and a $28.4 million mark-to-market loss in 2013 resulting from an increase in prices during 2013.

We recognized a $19.7 million mark-to-market loss and a $27.3 million mark-to-market gain on derivatives that were valued based upon unobservable inputs for the years ended December 31, 2013 and 2012, respectively.

Other income, net for the year ended December 31, 2013 had a favorable variance primarily due to a $1.0 million settlement of business interruption insurance related to a loss of revenue in our WestOK system in May 2011 due to storm damage at the Chester plant.

Non-cash line fill loss had a favorable variance for the year ended December 31, 2013 compared to the prior year primarily due to a decrease in forward curve prices during the prior year period.

Equity income (loss) in joint ventures decreased for the year ended December 31, 2013 compared to the prior year primarily due to a $9.7 million loss in the current period from the SouthTX equity method investments. The T2 LaSalle and T2 Eagle Ford joint ventures are structured to earn revenues equal to their operating costs, exclusive of depreciation expense. The loss primarily represents depreciation expense.

Goodwill impairment loss of $43.9 million for the year ended December 31, 2013 pertained to an impairment of goodwill related to our contract gas treating business acquired during the Cardinal Acquisition (see “Item 8: Financial Statements and Supplementary Data – Note 8”).

Loss on asset disposition for the year ended December 31, 2013 pertained to management’s decision to not pursue a project to lay pipe in an area where acquired rights of way had expired in the SouthOK system.

Loss on early extinguishment of debt for the year ended December 31, 2013 represents $17.5 million premiums paid; $8.0 million consent payment made; and $5.3 million write off of deferred financing costs, offset by $4.2 million recognition of unamortized premium related to the redemption of the 8.75% Senior Notes (see “Item 8. Financial Statements and Supplementary Data – Note 14 –Senior Notes”).

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Income tax benefit for the year ended December 31, 2013 represents the accrued income tax related to the income earned on APL Arkoma, Inc., which was acquired as part of the Cardinal Acquisition (see “–Acquisitions”).

Income attributable to non-controlling interests for the year ended December 31, 2013 increased compared to the prior year primarily due to Anadarko’s non-controlling interest in higher net income for the WestOK and WestTX joint ventures. The increase in net income of the WestOK and WestTX joint ventures was principally due to higher gross margins on the sale of commodities, resulting from higher volumes.

Preferred unit imputed dividend effect for the year ended December 31, 2013 represents the accretion of the beneficial conversion discount of the Class D Preferred Units which were issued in May 2013 (see “Item 8. Financial Statements and Supplementary Data – Note 6 – Class D Preferred Units”).

Preferred unit dividends in-kind for the year ended December 31, 2013 represent the distributions to the Class D Preferred Units which were issued in May 2013 (see “Item 8. Financial Statements and Supplementary Data – Note 6 – Class D Preferred Units”).

Preferred unit dividends in-kind for the year ended December 31, 2013 represent the distributions to the Class D Preferred Units issued in May 2013, which have been declared (see “–Class D Preferred Units”).

Non-GAAP financial data

EBITDA had an unfavorable variance for the year ended December 31, 2013 compared to the prior year mainly due to the impairment of goodwill acquired during the Cardinal Acquisition and the loss on early extinguishment of debt related to the redemption of the 8.75% Senior Notes during 2013, as discussed above in “–Other income items.”

Adjusted EBITDA had a favorable variance for the year ended December 31, 2013 compared to the prior year mainly due to the improved gross margin variance, as discussed above in “–Gross Margin,” partially offset by higher operating expenses as discussed above in “–Expenses.”

Distributable cash flow had a favorable variance for the year ended December 31, 2013 compared to the prior year mainly due to the favorable Adjusted EBITDA variance, as discussed above, partially offset by higher interest expense as discussed above in “–Expenses.”

Liquidity and Capital Resources

General

Our primary sources of liquidity are cash generated from operations and borrowings under our revolving credit facility. Our primary cash requirements, in addition to normal operating expenses, are for debt service, capital expenditures and quarterly distributions to our common unitholders and General Partner. In general, we expect to fund:

• cash distributions and maintenance capital expenditures through existing cash and cash flows from operating activities;

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• expansion capital expenditures and working capital deficits through the retention of cash and additional capital raising; and

• debt principal payments through operating cash flows and refinancings as they become due, or by the issuance of additional limited partner units or asset sales.

At December 31, 2014, we had $385.0 million outstanding borrowings under our $800.0 million senior secured revolving credit facility and $4.2 million of outstanding letters of credit, which are not reflected as borrowings on our consolidated balance sheets, with $410.8 million of remaining committed capacity under the revolving credit facility, (see “–Revolving Credit Facility”). We were in compliance with the credit facility’s covenants at December 31, 2014. We had a working capital surplus of $24.5 million at December 31, 2014 compared with a $78.4 million working capital deficit at December 31, 2013. We believe we will have sufficient liquid assets, cash from operations and borrowing capacity to meet our financial commitments, debt service obligations, contingencies and anticipated capital expenditures for at least the next twelve-month period. However, we are subject to business, operational and other risks that could adversely affect our cash flows. We may need to supplement our cash generation with proceeds from financing activities, including borrowings under our revolving credit facility and other borrowings, the issuance of additional limited partner units and sales of our assets.

Instability in the financial markets, as a result of recession or otherwise, may cause volatility in the markets and may impact the availability of funds from those markets. This may affect our ability to raise capital and reduce the amount of cash available to fund our operations. We rely on our cash flows from operations and our revolving credit facility to execute our growth strategy and to meet our financial commitments and other short-term liquidity needs. We cannot be certain additional capital will be available to the extent required and on acceptable terms.

Cash Flows – Year Ended December 31, 2014 Compared to Year Ended December 31, 2013

The following table details the cash flow changes between the years ended December 31, 2014 and 2013 (in thousands):

	Year Ended December 31,									Percent Change
	2014			2013			Variance
Net cash provided by (used in):
Operating activities	$	292,529		$	210,844		$	81,685			38.7	%
Investing activities		(524,339	)		(1,443,083	)		918,744			63.7	%
Financing activities		234,999			1,233,755			(998,756	)		(81.0	)%
Net change in cash and cash equivalents	$	3,189		$	1,516		$	1,673			—

Net cash provided by operating activities for the year ended December 31, 2014 increased compared to the prior year period primarily due to a $74.1 million increase in net earnings from continuing operations excluding non-cash charges. The increase is primarily due to increased gross margins from the sale of natural gas and NGLs offset by an increase in operating expense and general and administrative expense (see “–Results of Operations”).

Net cash used in investing activities for the year ended December 31, 2014 decreased compared to the prior year period mainly due to the $974.7 million TEAK Acquisition (see “Item 8. Financial Statements and Supplementary Data – Note 4”) in the prior year and due to the receipt of $131.0 million in net proceeds from the sale of WTLPG (see “–Recent Events”), partially offset by an increase in capital expenditures of $197.2 million in the current year compared to the prior year (see “–Capital Requirements”).

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Net cash provided by financing activities for the year ended December 31, 2014 decreased compared to the prior year period mainly due to (i) $637.3 million provided by the issuance of the 5.875% Senior Notes in the prior year (see “–Senior Notes”); (ii) $397.7 million provided by the issuance of Class D Preferred Units in the prior year (see “–Class D Preferred Units”); (iii) $391.2 million provided by the issuance of the 4.75% Senior Notes in the prior year (see “–Senior Notes”); and (iv) $388.4 million provided by the April 2013 common unit issuance of 11,845,000 common units in the prior year (see “–Common Equity Offerings). These decreases were partially offset by (i) the $391.4 million redemption of the 8.75% Senior Notes, including the cost of early retirement of debt in the prior year (see “–Senior Notes”); (ii) a $141.0 million net decrease in the prior year to outstanding borrowings on the revolving credit facility; and (iii) $122.3 million provided by the issuance of the Class E Preferred Units in the current period (see “–Class E Preferred Units”). The gross amount of borrowings and repayments under the revolving credit facility included within net cash provided by financing activities in the consolidated combined statements of cash flows, which are generally in excess of net borrowings or repayments during the period or at period end, reflect the timing of (i) cash receipts, which generally occur at specific intervals during the period and are utilized to reduce borrowings under the revolving credit facility, and (ii) payments, which generally occur throughout the period and increase borrowings under the revolving credit facility, which is generally common practice for the industry.

Cash Flows – Year Ended December 31, 2013 Compared to Year Ended December 31, 2012

The following table details the cash flow changes between the years ended December 31, 2013 and 2012 (in thousands):

	Year Ended December 31,									Percent Change
	2013			2012			Variance
Net cash provided by (used in):
Operating activities	$	210,844		$	174,638		$	36,206			20.7	%
Investing activities		(1,443,083	)		(1,006,641	)		(436,442	)		(43.4	)%
Financing activities		1,233,755			835,233			398,522			47.7	%
Net change in cash and cash equivalents	$	1,516		$	3,230		$	(1,714	)		—

Net cash provided by operating activities for the year ended December 31, 2013 increased compared to the prior year period due to a $60.0 million increase in net earnings from continuing operations excluding non-cash charges, offset by a $23.8 million unfavorable variance in the change in working capital. The increase in net earnings from continuing operations excluding non-cash charges is primarily due to increased gross margins from the sale of natural gas and NGLs offset by an increase in interest expense (see “–Results of Operations”). The change in working capital is mainly due to a $16.3 million increase in accrued interest primarily related to our Senior Notes (see “–Senior Notes”), and due to a net increase in working capital deficit related to the Cardinal and TEAK Acquisitions (see “–Acquisitions”).

Net cash used in investing activities for the year ended December 31, 2013 increased compared to the prior year period mainly due to the $974.7 million net cash paid for the TEAK Acquisition (see “–Acquisitions”); a $77.0 million increase in capital expenditures in the 2013 period compared to the prior year period (see further discussion of capital expenditures under “–Capital Requirements”); and a $13.4 million increase in contributions to equity method joint ventures (see “Item 8. Financial Statements and Supplementary Data – Note 5 – Equity Method Investments”). These increases in net cash used in investing activities were partially offset by $633.6 million net cash paid for acquisition of assets in the prior period, including the Cardinal Acquisition (see “–Acquisitions”).

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Net cash provided by financing activities for the year ended December 31, 2013 increased compared to the prior year period mainly due to (i) $637.3 million provided by the issuance of the 5.875% Senior Notes in February 2013; (ii) $391.2 million provided by the issuance of the 4.75% Senior Notes in May 2013 (see “–Senior Notes”); (iii) $397.7 million provided by the issuance of Class D Preferred Units (see “–Class D Preferred Units”); (iv) an increase of $128.8 million provided by the sale of common units under our equity distribution program (see “–Common Equity Offerings”); and (v) an increase of $75.9 million provided by the issuance of common units related to acquisitions (see “–Common Equity Offerings). The increases were partially offset by the $391.4 million redemption of the 8.75% Senior Notes in 2013, including the cost of early retirement of debt (see “–Senior Notes”); $495.4 million provided by the issuance of the 6.625% Senior Notes in the prior year (see “Item 8: Financial Statements and Supplementary Data – Note 14 – Senior Notes”); a $151.0 million, net increase in the prior period to outstanding borrowings on the revolving credit facility; and a $141.0 million, net decrease in 2013 to outstanding borrowings on the revolving credit facility.

Capital Requirements

Our operations require continual investment to upgrade or enhance existing operations and to ensure compliance with safety, operational, and environmental regulations. Our capital requirements consist primarily of:

• maintenance capital expenditures to maintain equipment reliability and safety and to address environmental regulations; and

• expansion capital expenditures to acquire complementary assets and to expand the capacity of our existing operations.

The following table summarizes maintenance and expansion capital expenditures, excluding amounts paid for acquisitions, for the periods presented (in thousands):

	Years Ended December 31,
	2014		2013		2012
Maintenance capital expenditures	$	25,680	$	21,919	$	19,021
Expansion capital expenditures		622,067		428,641		354,512
Total	$	647,747	$	450,560	$	373,533

The increase in maintenance capital for the year ended December 31, 2014 when compared to the prior years was due to the fluctuations in the timing of scheduled maintenance activity.

Expansion capital expenditures increased for the year ended December 31, 2014 compared to the prior year primarily due to construction costs for (i) the Stonewall plant within SouthOK, which was placed in service May 1, 2014 (see “–Recent Events”), (ii) the Silver Oak II plant within SouthTX placed in service on June 25, 2014 (see “–Recent Events”), (iii) the Edward plant within WestTX placed in service on September 15, 2014 (see “–Recent Events”); and (iv) the construction of the Velma to Arkoma connection within SouthOK, which was completed in December 2014. As of December 31, 2014, we had approved additional expenditures of approximately $267.9 million on processing facility expansions, pipeline extensions and compressor station upgrades, of which approximately $179.1 million in purchase commitments had been made. We expect to fund these projects through operating cash flows and borrowings under our revolving credit facility.

Expansion capital expenditures increased for the year ended December 31, 2013 compared to the prior year primarily due to the completion of the Driver Plant within WestTX in April 2013 and construction costs for the Stonewall Plant within SouthOK, the Silver Oak II Plant within SouthTX, and the Edward Plant within WestTX.

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Partnership Distributions

Our partnership agreement requires that we distribute 100% of available cash, for each calendar quarter, to our common unitholders and our General Partner within 45 days following the end of such calendar quarter in accordance with their respective percentage interests. Available cash consists generally of all our cash receipts, less cash disbursements and net additions to reserves, including any reserves required under debt instruments for future principal and interest payments.

The Class D Preferred Units received distributions of additional Class D Preferred Units in each of the full quarterly periods following their issuance in May 2013. On January 22, 2015, we exercised our right to convert all outstanding Class D Preferred Units into common limited partner units (see “–Subsequent Events”).

We make cumulative cash distributions on the Class E Preferred Units. The cash distributions are payable quarterly in arrears on January 15, April 15, July 15, and October 15 of each year, when, and if, declared by the board of directors. The initial distribution on the Class E Preferred Units was paid on July 15, 2014 in an amount equal to $0.67604 per unit, or approximately $3.4 million, representing the distribution for the period March 17, 2014 through July 14, 2014. Thereafter, we pay cumulative distributions in cash on the Class E Preferred Units on a quarterly basis at a rate of $0.515625 per unit, or 8.25% per year.

Our General Partner is granted discretion by our partnership agreement to establish, maintain and adjust reserves for future operating expenses, debt service, maintenance capital expenditures and distributions for the next four quarters. These reserves are not restricted by magnitude, but only by type of future cash requirements with which they can be associated. When our General Partner determines our quarterly distributions, it considers current and expected reserve needs along with current and expected cash flows to identify the appropriate sustainable distribution level.

Available cash is initially distributed 98% to our common limited partners and 2.0% to our General Partner. These distribution percentages are modified to provide for incentive distributions to be paid to our General Partner if quarterly distributions to common limited partners exceed specified targets. Incentive distributions are generally defined as all cash distributions paid to our General Partner that are in excess of 2.0% of the aggregate amount of cash being distributed. Our General Partner, holder of all our incentive distribution rights, has agreed to allocate up to $3.75 million of its incentive distribution rights per quarter back to us after the General Partner receives an initial $7.0 million of incentive distribution rights per quarter. Incentive distributions of $22.7 million, $15.0 million and $6.3 million were paid during the years ended December 31, 2014, 2013 and 2012, respectively.

Common Equity Offerings

On May 12, 2014, we entered into an Equity Distribution Agreement (the “2014 EDA”) with Citigroup Global Markets Inc. (“Citigroup”), Wells Fargo Securities, LLC and MLV & Co. LLC, as sales agents. Pursuant to the 2014 EDA, we may offer and sell from time to time through the sales agents, common units having an aggregate value up to $250.0 million. Sales are at market prices prevailing at the time of the sale. However, we are currently restricted from selling common units by the Merger Agreement (see “–Recent Events”).

In November 2012, we entered into an Equity Distribution Agreement (the “2012 EDA” and together, with the 2014 EDA, the “EDAs”) with Citigroup. Pursuant to this program, we offered and sold through Citigroup, as its sales agent, common units for $150.0 million. We used the full capacity under the 2012 EDA during the year ended 2013.

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During the years ended December 31, 2014 and 2013, we issued 3,558,005 and 3,895,679 common units, respectively, under the EDAs for proceeds of $121.6 million and $137.8 million, respectively, net of $1.2 million and $2.8 million, respectively, in commissions paid to the sales agents. We also received capital contributions from the General Partner of $2.5 million and $2.9 million, respectively, during the years ended December 31, 2014 and 2013, to maintain its 2.0% general partner interest in us. The net proceeds from the common unit offerings and General Partner contributions were utilized for general partnership purposes. As of December 31, 2014, we had $127.0 million remaining capacity under the 2014 EDA (see “Item 8. Financial Statements and Supplementary Data – Note 6 – Common Units”).

In April 2013, we sold 11,845,000 of our common units to the public at a price of $34.00 per unit, yielding net proceeds of $388.4 million after underwriting commissions and expenses. We also received a capital contribution from the General Partner of $8.3 million to maintain its 2.0% general partnership interest (see “Item 8: Financial Statements and Supplementary Data – Note 6 –Common Units”). We used the proceeds from this offering to fund a portion of the purchase price of the TEAK Acquisition (see “Item 8. Financial Statements and Supplementary Data – Note 4 – TEAK Midstream, LLC”).

Class D Preferred Units

On May 7, 2013 we completed the private placement of $400.0 million of our Class D Preferred Units to third party investors, at a negotiated price per unit of $29.75 for net proceeds of $397.7 million. The Class D Preferred Units were offered and sold in a private transaction exempt from registration under Section 4(2) of the Securities Act of 1933, as amended. We also received a capital contribution from the General Partner of $8.2 million to maintain its 2.0% general partner interest in us (see “Item 8: Financial Statements and Supplementary Data—Note 6 – Class D Preferred Units”). We used the proceeds to fund a portion of the purchase price of the TEAK Acquisition (see “Item 8: Financial Statements and Supplementary Data – Note 4 – TEAK Midstream, LLC”).

On January 22, 2015, we exercised our right under the certificate of designation of the Class D Preferred Units to convert all outstanding Class D Preferred Units, plus any unpaid distributions, into common limited partner units. As a result of the conversion, 15,389,575 common limited partner units were issued (see “Item 8. Financial Statements and Supplementary Data – Note 6 – Class D Preferred Units”).

Class E Preferred Units

On March 17, 2014, we issued 5,060,000 of our Class E Preferred Units to the public at an offering price of $25.00 per Class E Preferred Unit. Our Class E Preferred Units are listed on the New York Stock Exchange under the symbol “APLPE”. We received $122.3 million in net proceeds, which were used to pay down the revolving credit facility. We will make cumulative cash distributions on the Class E Preferred Units from the date of original issue. The cash distributions will be payable quarterly in arrears on January 15, April 15, July 15, and October 15 of each year, when, and if, declared by the board of directors. The initial distribution on the Class E Preferred Units was paid on July 15, 2014 in an amount equal to $0.67604 per unit, or approximately $3.4 million. Thereafter, we will pay cumulative distributions in cash on the Class E Preferred Units on a quarterly basis at a rate of $0.515625 per unit, or 8.25% per year (see “Item 8. Financial Statements and Supplementary Data –Note 6 – Class E Preferred Units”).

On January 15, 2015, we paid a cash distribution of $0.515625 per unit, or approximately $2.6 million, on our Class E Preferred Units, representing the cash distribution for the period October 15, 2014 through January 14, 2015 (see “Item 8. Financial Statements and Supplementary Data – Note 6 – Class E Preferred Units”).

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On January 27, 2015, we delivered notice of its intention to redeem all outstanding shares of its Class E Preferred Units. The redemption of the Class E Preferred Units will occur immediately prior to the close of the Merger (See “–Recent Events”). We expect the Merger to close on February 27, 2015 and, accordingly, the redemption date would also be on February 27, 2015. The Class E Preferred Units will be redeemed at a redemption price of $25.00 per unit, plus an amount equal to all accumulated and unpaid distributions on the Class E Preferred Units as of the redemption date (see “Item 8. Financial Statements and Supplementary Data – Note 6 – Class E Preferred Units”).

Revolving Credit Facility

At December 31, 2014, we had an $800.0 million senior secured revolving credit facility with a syndicate of banks, which matures in August 2019. We had $385.0 million outstanding borrowings as of December 31, 2014. Borrowings under the revolving credit facility bear interest, at our option, at either (i) the higher of (a) the prime rate, (b) the federal funds rate plus 0.50% and (c) the LIBOR rate plus 1.0%, or (ii) the LIBOR rate for the applicable period, in each case plus the applicable margin. The weighted average interest rate for borrowings on the revolving credit facility, at December 31, 2014, was 2.7%. Up to $50.0 million of the revolving credit facility may be utilized for letters of credit, of which $4.2 million was outstanding at December 31, 2014. These outstanding letter of credit amounts were not reflected as borrowings on our consolidated balance sheets.

On August 28, 2014, we entered into a Second Amended and Restated Credit Agreement which, among other changes, extended the maturity date; increased the revolving credit commitment and incremental revolving credit amount; and reduced the applicable margin used to determine interest rates by 0.25% (see “Item 8. Financial Statements and Supplementary Data – Note 14 – Revolving Credit Facility”).

Borrowings under the revolving credit facility are secured by a lien on and security interest in all our property and that of our subsidiaries, except for the assets owned by the WestOK, WestTX and Centrahoma joint ventures and their respective subsidiaries. Borrowings are also secured by the guaranty of each of our consolidated subsidiaries other than the joint venture companies. The revolving credit facility contains customary covenants, including covenants to maintain specified financial ratios, restrictions on our ability to incur additional indebtedness; make certain acquisitions, loans or investments; make distribution payments to our unitholders if an event of default exists; or enter into a merger or sale of assets, including the sale or transfer of interests in our subsidiaries. We are also unable to borrow under our revolving credit facility to pay distributions of available cash to unitholders because such borrowings would not constitute “working capital borrowings” pursuant to our partnership agreement.

The events that constitute an event of default for our revolving credit facility include payment defaults, breaches of representations or covenants contained in the credit agreement, adverse judgments against us in excess of a specified amount, and a change of control of our General Partner. As of December 31, 2014, we were in compliance with all covenants under the revolving credit facility.

Senior Notes

At December 31, 2014, we had $500.0 million principal outstanding of 6.625% Senior Notes, $650.0 million principal outstanding of 5.875% Senior Notes, and $400.0 million principal outstanding of 4.75% Senior Notes (together with the 6.625% Senior Notes and 5.875% Senior Notes, the “Senior Notes”).

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The Senior Notes are subject to repurchase by us at a price equal to 101% of their principal amount, plus accrued and unpaid interest, upon a change of control or upon certain asset sales if we do not reinvest the net proceeds within 360 days. The Senior Notes are junior in right of payment to our secured debt, including our obligations under our revolving credit facility.

Indentures governing the Senior Notes contain covenants, including limitations of our ability to: incur certain liens; engage in sale/leaseback transactions; incur additional indebtedness; declare or pay distributions if an event of default has occurred; redeem, repurchase or retire equity interests or subordinated indebtedness; make certain investments; or merge, consolidate or sell substantially all our assets. We were in compliance with these covenants as of December 31, 2014.

On January 15, 2015, TRP announced tender offers to redeem any and all of our outstanding Senior Notes in connection with, and conditioned upon, the consummation of the Merger. The Merger, however, is not conditioned on the consummation of the tender offers (see “–Subsequent Events”).

8.75% Senior Notes:

On January 28, 2013, we commenced a cash tender offer for any and all of our outstanding 8.75% Senior Notes and a solicitation of consents to eliminate most of the restrictive covenants and certain of the events of default contained in the indenture governing the 8.75% Senior Notes (“8.75% Senior Notes Indenture”). Approximately $268.4 million aggregate principal amount of the 8.75% Senior Notes, were validly tendered as of the expiration date of the consent solicitation. In February 2013, we accepted for purchase all 8.75% Senior Notes validly tendered as of the expiration of the consent solicitation and paid $291.4 million to redeem the $268.4 million principal plus $11.2 million make-whole premium, $3.7 million accrued interest and $8.0 million consent payment. We entered into a supplemental indenture amending and supplementing the 8.75% Senior Notes Indenture. On March 12, 2013, we paid $105.6 million to redeem the remaining $97.3 million 8.75% Senior Notes not purchased in connection with the tender offer, plus a $6.3 million make-whole premium and $2.0 million in accrued interest. We funded the redemption with a portion of the net proceeds from the issuance of the 5.875% Senior Notes.

6.625% Senior Notes:

On September 28, 2012, we issued $325.0 million of the 6.625% Senior Notes in a private placement transaction, at par. We received net proceeds of $318.9 million after underwriting commissions and other transaction costs and utilized the proceeds to reduce the outstanding balance on our revolving credit facility.

On December 20, 2012, we issued $175.0 million of the 6.625% Senior Notes in a private placement transaction. The 6.625% Senior Notes were issued at a premium of 103.0% of the principal amount for a yield of 6.0%. We received net proceeds of $176.1 million after underwriting commissions and other transaction costs and utilized the proceeds to partially finance the Cardinal Acquisition (see –Acquisitions). Of the $176.1 million net proceeds, $176.5 million were received during the year ended December 31, 2012, while additional expenses of $0.4 million were incurred during the year ended December 31, 2013.

The 6.625% Senior Notes are presented combined with a net $3.9 million unamortized premium as of December 31, 2014. Interest on the 6.625% Senior Notes is payable semi-annually in arrears on April 1 and October 1. The 6.625% Senior Notes are due on October 1, 2020 and are redeemable at any time after October 1, 2016, at certain redemption prices, together with accrued and unpaid interest to the date of redemption (see “Item 8: Financial Statements and Supplementary Data –Note 14 –Senior Notes”).

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5.875% Senior Notes:

On February 11, 2013, we issued $650.0 million of the 5.875% Senior Notes in a private placement transaction. The 5.875% Senior Notes were issued at par. We received net proceeds of $637.3 million and utilized the proceeds to redeem the 8.75% Senior Notes and repay a portion of the outstanding indebtedness under the revolving credit facility. Interest on the 5.875% Senior Notes is payable semi-annually in arrears on February 1 and August 1. The 5.875% Senior Notes are due on August 1, 2023, and redeemable at any time after February 1, 2018, at certain redemption prices, together with accrued and unpaid interest to the date of redemption (See “Item 8: Financial Statements and Supplementary Data –Note 14 –Senior Notes”).

4.75% Senior Notes:

On May 10, 2013, we issued $400.0 million of the 4.75% Senior Notes in a private placement transaction. The 4.75% Senior Notes were issued at par. We received net proceeds of $391.2 million and utilized the proceeds repay a portion of the outstanding indebtedness under the revolving credit agreement as part of the TEAK Acquisition. Interest on the 4.75% Senior Notes is payable semi-annually in arrears on May 15 and November 15. The 4.75% Senior Notes are due on November 15, 2021 and are redeemable any time after March 15, 2016, at certain redemption prices, together with accrued and unpaid interest to the date of redemption (See “Item 8: Financial Statements and Supplementary Data –Note 14 –Senior Notes”).

Off Balance Sheet Arrangements

As of December 31, 2014, our off balance sheet arrangements include our letters of credit, issued under the provisions of our revolving credit facility, totaling $4.2 million, and surety bonds under which our maximum liability is $10.7 million. These are in place to support various performance obligations as required by (i) statutes within the regulatory jurisdictions where we operate, (ii) surety, and (iii) counterparty support.

We have certain long-term unconditional purchase obligations and commitments, primarily throughput contracts. These agreements provide transportation services to be used in the ordinary course of our operations.

Contractual Obligations and Commercial Commitments

The following table summarizes our contractual obligations and commercial commitments at December 31, 2014 (in thousands):

			Payments Due by Period (in thousands)
	Total		Less than 1 Year		1 - 3 Years		4 - 5 Years		After 5 Years
Contractual cash obligations:
Debt principal	$	1,935,000	$	—	$	—	$	385,000	$	1,550,000
Interest on total debt(1)		696,783		100,537		201,074		197,666		197,506
Capital leases		229		224		5		—		—
Operating leases		31,792		12,621		13,736		5,113		322
Total contractual cash obligations(2)	$	2,663,804	$	113,382	$	214,815	$	587,779	$	1,747,828

(1) Based on the interest rates of our respective debt components as of December 31, 2014.

(2) Excludes non-current deferred tax liabilities of $48.2 million due to uncertainty of the timing of future cash flows for such liabilities.

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			Amount of Commitment Expiration Per Period (in thousands)
	Total		Less than 1 Year		1 - 3 Years		4 - 5 Years		After 5 Years
Other commercial commitments:
Standby letters of credit	$	4,177	$	4,177	$	—	$	—	$	—
Surety bonds		10,727		3,502		7,223		2		—
Purchase commitments		179,135		179,135		—		—		—
Throughput contracts		191,403		20,717		47,732		38,640		84,314
Total commercial commitments	$	385,442	$	207,531	$	54,955	$	38,642	$	84,314

Environmental Regulation

Our operations are subject to federal, state and local laws and regulations governing the release of regulated materials into the environment or otherwise relating to environmental protection or human health or safety. We believe our operations and facilities are in substantial compliance with applicable environmental laws and regulations. Any failure to comply with these laws and regulations may result in the assessment of administrative, civil or criminal penalties, imposition of remedial requirements, issuance of injunctions affecting our operations, or other measures. Risks of accidental leaks or spills are associated with the gathering of natural gas. There can be no assurance we will not incur significant costs and liabilities relating to claims for damages to property, the environment, natural resources, or persons resulting from the operation of our business. Moreover, it is possible other developments, such as increasingly stringent environmental laws and regulations and enforcement policies, could result in increased costs and liabilities to us.

Environmental laws and regulations have changed substantially and rapidly over the last 25 years, and we anticipate there will be continuing changes. Trends in environmental regulation include increased reporting obligations and placing more restrictions and limitations on activities, such as emissions of greenhouse gases and other pollutants, generation and disposal of wastes and use, storage and handling of chemical substances, that may impact human health, the environment and/or endangered species.

Other increasingly stringent environmental restrictions and limitations have resulted in increased operating costs for us and other similar businesses throughout the United States. It is possible the costs of compliance with environmental laws and regulations may continue to increase. We will attempt to anticipate future regulatory requirements that might be imposed and to plan accordingly, but there can be no assurance we will identify and properly anticipate each such charge, or that our efforts will prevent material costs, if any, from rising.

Inflation and Changes in Prices

Inflation affects the operating expenses of our operations due to the increase in costs of labor and supplies. Inflation did not have a material impact on our results of operations for the years ended December 31, 2014, 2013 and 2012. While we anticipate inflation may affect our future operating costs, we cannot predict the timing or amounts of any such effects.

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Critical Accounting Policies and Estimates

The preparation of financial statements in conformity with GAAP requires making estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of actual revenue and expenses during the reporting period. Although we base our estimates on historical experience and various other assumptions we believe to be reasonable under the circumstances, actual results may differ from the estimates on which our financial statements are prepared at any given point of time. Changes in these estimates could materially affect our financial position, results of operations or cash flows. Significant items subject to such estimates and assumptions include revenue and expense accruals, depreciation and amortization, asset impairment, fair value of derivative instruments, the probability of forecasted transactions and the allocation of purchase price to the fair value of assets acquired. We summarize our significant accounting policies within our consolidated financial statements included in “Item 8. Financial Statements and Supplementary Data – Note 2.” The following table evaluates the potential impact of estimates utilized during the year ended December 31, 2014:

Description	Judgments and Uncertainties	Effect if Actual Results Differ from Estimates and Assumptions
Revenue and Cost of Sales Recognition
Revenue primarily consists of the sale of natural gas and NGLs along with the fees earned from gathering, processing, treating and transportation. Costs of sales primarily consists of purchases of natural gas at the wellhead and POP settlements with producers.	Revenues are estimated and accrued due to timing differences between the delivery of natural gas, NGLs, and condensate and the receipt of a delivery statement. This revenue is recorded based upon estimated volumetric data and management estimates of the related gathering and compression fees and product prices. Costs of goods sold are estimated based upon the estimated revenues.	As of December 31, 2014, there were $175.3 million accrued unbilled revenues. A 10% change in the estimated revenues would change gross margin by approximately $3.3 million.
Impairment of Long-Lived Assets
Management evaluates our long-lived assets, including intangibles, for impairment when events or changes in circumstances warrant such a review. A long-lived asset is considered impaired when the estimated undiscounted cash flow from such asset is less than the asset’s carrying value. In that event, a loss is recognized to the extent that the carrying value exceeds the fair value of the long-lived asset.	In evaluating impairment, management considers the use or disposition of an asset, the estimated remaining life of an asset, and future expenditures to maintain an asset’s existing service potential. In order to determine the cash flow, management must make certain estimates and assumptions, which include, but are not limited to, changes in general economic conditions in regions in which we operate, our ability to negotiate favorable contracts, the risks that natural gas exploration and production activities will not occur or be successful, competition from other midstream companies, our dependence on certain significant customers and producers of natural gas, and the volume of reserves behind an asset and future NGL product and natural gas prices.	As of December 31, 2014, there were no indicators of impairment for our long-lived assets. A significant variance in any of these assumptions or factors could materially affect future cash flows, which could result in the impairment of an asset.

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Description	Judgments and Uncertainties	Effect if Actual Results Differ from Estimates and Assumptions
Acquisitions – Purchase Price Allocation
We allocate the purchase price of an acquired business to its identifiable assets and liabilities, including identifiable intangible assets, based upon estimated fair values. The excess of the purchase price over the amount allocated to the assets and liabilities is recorded as goodwill. For significant acquisitions, we engage outside appraisal firms to assist in the fair value determination of identifiable intangible assets such as customer relationships and contracts. We adjust the preliminary purchase price allocation, as necessary, after the acquisition closing date through the end of the measurement period of up to one year as we finalize valuations for the assets acquired and liabilities assumed.	Purchase price allocation methodology requires management to make assumptions and apply judgment to estimate the fair value of acquired assets and liabilities. Management estimates the fair value of assets and liabilities primarily using a market approach, income approach, or cost approach, as appropriate. Key inputs into the fair value determinations include estimates and assumptions related to future volumes, commodity prices, operating costs, replacement costs and construction costs, as well as an estimate of the expected term and profits of the related customer contracts.	If estimates or assumptions used to complete the purchase price allocation and estimate the fair value of acquired assets and liabilities significantly differs from assumptions made during the preliminary purchase price allocation, the allocation of purchase price between goodwill, intangibles and property plant and equipment could significantly differ. Such a difference would impact future earnings through depreciation and amortization expense. In addition, if forecasts supporting the valuation of the intangibles or goodwill are not achieved, impairments could arise.

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Description	Judgments and Uncertainties	Effect if Actual Results Differ from Estimates and Assumptions
Impairment of Goodwill
Goodwill is the cost of an acquisition less the fair value of the net identifiable assets of the acquired business. We evaluate goodwill for impairment annually and whenever events or changes in circumstances indicate it is more likely than not that the fair value of a reporting unit is less than its carrying amount. The first step of the evaluation is a qualitative analysis to determine if it is “more likely than not” that the carrying value of a reporting unit with goodwill exceeds its fair value. The additional quantitative steps in the goodwill impairment test are only performed if we determine that it is more likely than not that the carrying value is greater than the fair value.	Management is required to make certain assumptions when determining the amount of goodwill allocated to each reporting unit. The method of allocating goodwill resulting from acquisitions involves estimating the fair value of the reporting units and allocating the purchase price for each acquisition to each reporting unit. Goodwill is then calculated for each reporting unit as the excess of the allocated purchase price over the estimated fair value of the net assets. If a quantitative analysis is deemed to be required to evaluate goodwill for impairment, management determines the fair value of reporting units using the income and market approaches. These approaches are also used when allocating the purchase price to acquired assets and liabilities. These types of analyses require us to make assumptions and estimates regarding industry and economic factors such as relevant commodity prices and production volumes. It is our policy to conduct impairment testing based on our current business strategy in light of present industry and economic conditions, as well as future expectations.	Management performed qualitative analyses for all reporting units at December 31, 2014, including SouthTX, which is normally evaluated at April 30, 2014. SouthTX was evaluated at December 31, 2014 due to the significant decline in commodity prices during 2014, which management considered to be a triggering event. Based upon qualitative analyses, it was determined it was more likely than not that the carrying values of our reporting units exceeded their fair values and no impairments were recognized for the year ended December 31, 2014 (See “Item 8: Financial Statements and Supplementary Data ‒ Note 8”).
Depreciation and Amortization
Depreciation and amortization expense is generally computed using the straight-line method over the estimated useful life of the assets.	Determination of depreciation and amortization expense requires judgment regarding the estimated useful lives. For property, plant and equipment, judgment is required to estimate salvage values. As circumstances warrant, depreciation and amortization estimates are reviewed to determine if any changes in the underlying assumptions are necessary.	The life of our long-lived tangible assets ranges from 2 – 40 years, and the life of our definite-lived intangible assets ranges from 2 – 15 years. If the useful lives of our assets were decreased by 10%, we estimate that annual depreciation and amortization expense would increase by approximately $12.0 million, which would result in a corresponding change in our net income.

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Description	Judgments and Uncertainties	Effect if Actual Results Differ from Estimates and Assumptions
Variable Interest Entities
We evaluate all legal entities in which we hold an ownership or other pecuniary interest to determine if the entity is a VIE. Our interests in a VIE are referred to as variable interests. Variable interests can be contractual, ownership or other pecuniary interests in an entity that change with changes in the fair value of the VIE’s assets. When we conclude that we hold an interest in a VIE we must determine if we are the entity’s primary beneficiary. A primary beneficiary is deemed to have a controlling financial interest in a VIE. We are required to consolidate any VIE when we determine that we are the primary beneficiary. We must disclose the nature of any interests in a VIE that is not consolidated.	Significant judgment is exercised in determining that a legal entity is a VIE and in evaluating our interest in a VIE. We use primarily qualitative analysis to determine if an entity is a VIE. We evaluate the entity’s need for continuing financial support; the equity holder’s lack of a controlling financial interest; and/or if an equity holder’s voting interests are disproportionate to its obligation to absorb expected losses or receive residual returns. We evaluate our interests in a VIE to determine whether we are the primary beneficiary. We use primarily qualitative analysis to determine if we are deemed to have a controlling financial interest in the VIE. We continually monitor our interests in legal entities for changes in the design or activities of an entity and changes in our interests, including our status as the primary beneficiary to determine if the changes require us to revise our previous conclusions.	The T2 Joint Ventures we have equity interests in are considered to be VIEs. However, we have determined we are not the primary beneficiary of any of the T2 Joint Ventures, and thus do not consolidate these joint ventures. Changes in the design or nature of the activities of the T2 Joint Ventures, or our involvement with the T2 Joint Ventures may require us to reconsider our conclusions on the joint venture’s statuses as VIEs and/or our status as not being the primary beneficiary. Such reconsideration requires significant judgment and understanding of the organization. This could result in the consolidation of the T2 Joint Ventures, which would have a significant impact on our financial statements.
Impairment of Equity Investments
We evaluate our equity method investments in the T2 Joint Ventures for impairment whenever events or changes in circumstances indicate, in management’s judgment, that the carrying value of such investment may have experienced a decline in value. When evidence of an other-than-temporary loss in value has occurred, we compare the estimated fair value of the investment to the carrying value of the investment to determine whether an impairment has occurred.	Our impairment assessment requires us to apply judgment in estimating future cash flows from the T2 Joint Ventures; the primary estimate is the operating costs expected to be incurred. We determined there were no material events or changes in circumstances that would indicate an other-than-temporary loss in value has occurred.	We determined there were no material events or changes in circumstances that would indicate an other-than-temporary loss in value has occurred. An impairment of our equity investments could have a significant impact on our financial statements.

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Description	Judgments and Uncertainties	Effect if Actual Results Differ from Estimates and Assumptions
Derivative Instruments
Our derivative financial instruments are recorded at fair value in the consolidated balance sheets. Changes in fair value and settlements are reflected in our earnings in the consolidated statements of operations as gains and losses related to NGLs sales, interest expense and/or derivative loss, net. See “Item 8. “Financial Statements and Supplementary Data – Note 12” for further discussion.	When available, quoted market prices or prices obtained through external sources are used to determine a financial instrument’s fair value. The valuation of Level 2 financial instruments is based on quoted market prices for similar assets and liabilities in active markets and other inputs that are observable. However, for other financial instruments for which quoted market prices are not available, the fair value is based upon inputs that are largely unobservable. These instruments are classified as Level 3 under the fair value hierarchy. The fair value of these instruments are determined based on pricing models developed primarily from historical and expected correlations with quoted market prices. At December 31, 2014, approximately 53% of our net derivative assets are classified as Level 3 with the difference classified as Level 2.	If the assumptions used in the pricing models for our financial instruments are inaccurate or if we had used an alternative valuation methodology, the estimated fair value may have been different, and we may be exposed to unrealized losses or gains that could be material. Of the $125.4 million net derivative assets and the $9.1 million net derivative liabilities at December 31, 2014 and 2013, respectively, we had $66.0 million net derivative assets and $11.8 million net derivative liabilities, respectively, that were classified as Level 3 fair value measurements, which rely on subjective forward developed price curves. Holding all other variables constant, a 10% change in the prices utilized in calculating the Level 3 fair value of derivatives at December 31, 2014 would have resulted in approximately a $6.5 million noncash change to net income for the year ended December 31, 2014.
Income Taxes
Our corporate subsidiary, APL Arkoma, Inc., accounts for income taxes under the asset and liability method. See “Item 8. Financial Statements and Supplementary Data –Note 10” for further discussion.	Deferred income taxes are recognized for future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis and net operating loss and credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect of any tax rate change on deferred taxes is recognized in the period that includes the enactment date of the tax rate change. Realization of deferred tax assets is assessed and, if not more likely than not, a valuation allowance is recorded to write down the deferred tax assets to their net realizable value.	As of December 31, 2014, we have recorded deferred tax assets of $17.3 million. A 10% adjustment due to a valuation allowance related to the realization of deferred assets could result in an approximately $1.7 million impact on net earnings.

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Recently Adopted Accounting Standard Updates

See “Item 8: Financial Statements and Supplementary Data – Note 2 –Recently Adopted Accounting Standard Updates” for information regarding recently adopted accounting pronouncements.

Recently Issued Accounting Standard Updates

See “Item 8: Financial Statements and Supplementary Data – Note 2 –Recently Issued Accounting Standard Updates” for information regarding recently issued accounting pronouncements.

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

The primary objective of the following information is to provide forward-looking quantitative and qualitative information about our potential exposure to market risks. The term “market risk” refers to the risk of loss arising from adverse changes in interest rates and oil and natural gas prices. The disclosures are not meant to be precise indicators of expected future losses, but rather indicators of reasonable possible losses. This forward-looking information provides indicators of how we view and manage our ongoing market risk exposures. All our market risk sensitive instruments were entered into for purposes other than trading.

General

All our assets and liabilities are denominated in U.S. dollars, and as a result, we do not have exposure to currency exchange risks.

We are exposed to various market risks, principally fluctuating interest rates and changes in commodity prices. These risks can impact our results of operations, cash flows and financial position. We manage these risks through regular operating and financing activities and periodic use of derivative instruments. The following analysis presents the effect on our results of operations, cash flows and financial position as if the hypothetical changes in market risk factors occurred on December 31, 2014. Only the potential impact of hypothetical assumptions is analyzed. The analysis does not consider other possible effects that could impact our business.

Current market conditions elevate our concern over counterparty risks and may adversely affect the ability of these counterparties to fulfill their obligations to us, if any. The counterparties to our commodity-based derivatives are banking institutions, or their affiliates, currently participating in our revolving credit facility. The creditworthiness of our counterparties is constantly monitored, and we are not aware of any inability on the part of our counterparties to perform under our contracts.

Interest Rate Risk. At December 31, 2014, we had an $800.0 million senior secured revolving credit facility with $385.0 million in outstanding borrowings. Borrowings under the revolving credit facility bear interest, at our option, at either (1) the higher of (a) the prime rate, (b) the federal funds rate plus 0.50% and (c) the LIBOR rate plus 1.0%; or (2) the LIBOR rate for the applicable period (each plus the applicable margin). The weighted average interest rate for the revolving credit facility borrowings was 2.7% at December 31, 2014. Based upon the outstanding borrowings on the senior secured revolving credit facility and holding all other variables constant, a 100 basis-point, or 1%, change in interest rates would change our annual interest expense by approximately $3.9 million.

Commodity Price Risk. We are exposed to commodity prices as a result of being paid for certain services in the form of natural gas, NGLs and condensate rather than cash; or purchasing natural gas from certain producers at the wellhead. We sell natural gas, NGLs and condensate from our gathering and processing operations, which causes us to be in a long position on these transactions. We purchase natural gas at the wellhead from certain producers, which causes us to be in a short position on these transactions. We use a number of different derivative instruments in connection with our commodity price risk management activities. We enter into financial swap and option instruments to hedge our forecasted natural gas, NGLs and condensate sales against the variability in expected future cash flows attributable to changes in market prices. Swap instruments are contractual agreements between counterparties to exchange obligations of money as the underlying natural gas, NGLs and condensate are sold. Under swap agreements, we receive a fixed price and remit a floating price based on certain indices for the relevant contract period. Commodity-based option instruments are contractual agreements that grant the right to receive the difference between a fixed price and a floating price based on certain indices for the relevant contract period, if the floating price is lower than the fixed price. See “Item 8. Financial Statements and Supplementary Data –Note 12” for further discussion of our derivative instruments. Average estimated market prices for NGLs, natural gas and condensate, based upon twelve-month forward price curves as of December 16, 2014, were $0.53 per gallon, $3.58 per million BTU and $58.19 per barrel, respectively. A 10% change in these prices would change our forecasted net income for the twelve-month period ended December 31, 2015 by approximately $14.5 million.

99

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Board of Directors and Unitholders

Atlas Pipeline Partners, L.P.

We have audited the accompanying consolidated balance sheets of Atlas Pipeline Partners, L.P. (a Delaware limited partnership) and subsidiaries (the “Partnership”) as of December 31, 2014 and 2013, and the related consolidated statements of operations, comprehensive income, equity, and cash flows for each of the three years in the period ended December 31, 2014. These financial statements are the responsibility of the Partnership’s management. Our responsibility is to express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of Atlas Pipeline Partners, L.P. and subsidiaries as of December 31, 2014 and 2013, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 2014 in conformity with accounting principles generally accepted in the United States of America.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the Partnership’s internal control over financial reporting as of December 31, 2014, based on criteria established in the 1992 Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO), and our report dated February 27, 2015 expressed an unqualified opinion.

/s/ GRANT THORNTON LLP

Tulsa, Oklahoma

February 27, 2015

100

ATLAS PIPELINE PARTNERS, L.P. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(in thousands)

	December 31, 2014		December 31, 2013
ASSETS
Current assets:
Cash and cash equivalents	$	8,103	$	4,914
Accounts receivable		240,576		219,297
Current portion of derivative assets		88,007		174
Prepaid expenses and other		17,368		17,393
Total current assets		354,054		241,778
Property, plant and equipment, net		3,249,973		2,724,192
Goodwill		365,763		368,572
Intangible assets, net		596,261		696,271
Equity method investment in joint ventures		177,212		248,301
Long-term portion of derivative assets		37,398		2,270
Other assets, net		44,072		46,461
Total assets	$	4,824,733	$	4,327,845
LIABILITIES AND EQUITY
Current liabilities:
Current portion of long-term debt	$	224	$	524
Accounts payable – affiliates		4,438		2,912
Accounts payable		87,076		79,051
Accrued liabilities		49,729		47,449
Accrued interest payable		26,924		26,737
Current portion of derivative liabilities		—		11,244
Accrued producer liabilities		161,208		152,309
Total current liabilities		329,599		320,226
Long-term portion of derivative liabilities		—		320
Long-term debt, less current portion		1,938,886		1,706,786
Deferred income taxes, net		30,914		33,290
Other long-term liabilities		6,867		7,318
Commitments and contingencies
Equity:
Class D convertible preferred limited partners’ interests		538,814		450,749
Class E preferred limited partners’ interests		121,852		—
Common limited partners’ interests		1,731,764		1,703,778
General Partner’s interest		47,775		46,118
Total partners’ capital		2,440,205		2,200,645
Non-controlling interest		78,262		59,260
Total equity		2,518,467		2,259,905
Total liabilities and equity	$	4,824,733	$	4,327,845

See accompanying notes to consolidated financial statements

101

ATLAS PIPELINE PARTNERS, L.P. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF OPERATIONS

(in thousands, except per unit data)

	Years Ended December 31,
	2014			2013			2012
Revenue:
Natural gas and liquids sales	$	2,621,428		$	1,959,144		$	1,137,261
Transportation, processing and other fees – third parties		200,787			164,874			66,287
Transportation, processing and other fees – affiliates		286			303			435
Derivative gain (loss), net		131,064			(28,764	)		31,940
Other income, net		21,555			11,292			10,097
Total revenues		2,975,120			2,106,849			1,246,020
Costs and expenses:
Natural gas and liquids cost of sales		2,291,914			1,690,382			927,946
Operating expenses		113,606			94,527			62,098
General and administrative		68,893			55,856			43,406
Compensation reimbursement – affiliates		5,050			5,000			3,800
Other expenses		6,073			20,005			15,069
Depreciation and amortization		202,543			168,617			90,029
Interest		93,147			89,637			41,760
Total costs and expenses		2,781,226			2,124,024			1,184,108
Equity income (loss) in joint ventures		(14,007	)		(4,736	)		6,323
Gain (loss) on asset dispositions		47,381			(1,519	)		—
Goodwill impairment loss		—			(43,866	)		—
Loss on early extinguishment of debt		—			(26,601	)		—
Income (loss) before tax		227,268			(93,897	)		68,235
Income tax expense (benefit)		(2,376	)		(2,260	)		176
Net income (loss)		229,644			(91,637	)		68,059
Income attributable to non-controlling interests		(13,164	)		(6,975	)		(6,010	)
Preferred unit imputed dividend effect		(45,513	)		(29,485	)		—
Preferred unit dividends in kind		(42,552	)		(23,583	)		—
Preferred unit dividends		(8,233	)		—			—
Net income (loss) attributable to common limited partners and the General Partner	$	120,182		$	(151,680	)	$	62,049
Allocation of net income (loss) attributable to:
Common limited partner interest	$	93,684			(165,923	)		52,391
General Partner interest		26,498			14,243			9,658
	$	120,182		$	(151,680	)	$	62,049
Net income (loss) attributable to common limited partners per unit:
Basic	$	0.95		$	(2.23	)	$	0.95
Weighted average common limited partner units (basic)		82,257			74,364			54,326
Diluted	$	0.95		$	(2.23	)	$	0.95
Weighted average common limited partner units (diluted)		98,384			74,364			55,138

See accompanying notes to consolidated financial statements

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ATLAS PIPELINE PARTNERS, L.P. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(in thousands)

	Years Ended December 31,
	2014		2013			2012
Net income (loss)	$	229,644	$	(91,637	)	$	68,059
Other comprehensive income:
Adjustment for realized losses on cash flow hedges reclassified to net income (loss)		—		—			4,390
Total other comprehensive income		—		—			4,390
Comprehensive income (loss)	$	229,644	$	(91,637	)	$	72,449
Comprehensive income attributable to non-controlling interests	$	13,164	$	6,975		$	6,010
Preferred unit imputed dividend effect		45,513		29,485			—
Preferred unit dividends in kind		42,552		23,583			—
Preferred unit dividends		8,233		—			—
Comprehensive income (loss) attributable to common limited partners and the General Partner		120,182		(151,680	)		66,439
Comprehensive income (loss)	$	229,644	$	(91,637	)	$	72,449

See accompanying notes to consolidated financial statements

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ATLAS PIPELINE PARTNERS, L.P. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF EQUITY

(in thousands, except unit data)

	Class D Preferred Limited Partner Units		Class E Preferred Limited Partner Units		Common Limited Partner Units			Class D Preferred Limited Partners		Class E Preferred Limited Partners		Common Limited Partners			General Partner			Accumulated Other Comprehensive Loss			Non-controlling Interest			Total
Balance at January 1, 2012		—		—		53,617,183		$	—	$	—	$	1,245,163		$	23,856		$	(4,390	)	$	(28,401	)	$	1,236,228
Issuance of units and General Partner capital contribution		—		—		10,782,462			—		—		321,491			6,865			—			—			328,356
Equity compensation under incentive plans		—		—		180,417			—		—		11,549			—			—			—			11,549
Purchase and retirement of treasury units		—		—		(24,052	)		—		—		(695	)		—			—			—			(695	)
Distributions paid		—		—		—			—		—		(122,223	)		(8,878	)		—			—			(131,101	)
Contributions from non-controlling interests		—		—		—			—		—		—			—			—			182			182
Other comprehensive income		—		—		—			—		—		—			—			4,390			—			4,390
Increase in non-controlling interest related to business combination		—		—		—			—		—		—			—			—			89,440			89,440
Net income		—		—		—			—		—		52,391			9,658			—			6,010			68,059
Balance at December 31, 2012		—		—		64,556,010		$	—	$	—	$	1,507,676		$	31,501		$	—		$	67,231		$	1,606,408

104

ATLAS PIPELINE PARTNERS, L.P. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF EQUITY CONTINUED

(in thousands, except unit data)

	Class D Preferred Limited Partner Units		Class E Preferred Limited Partner Units		Common Limited Partner Units			Class D Preferred Limited Partners		Class E Preferred Limited Partners			Common Limited Partners			General Partner			Accumulated Other Comprehensive Loss		Non-controlling Interest			Total
Balance at January 1, 2013		—		—		64,556,010		$	—	$	—		$	1,507,676		$	31,501		$	—	$	67,231		$	1,606,408
Issuance of units and General Partner capital contribution		13,445,383		—		15,740,679			397,681		—			526,263			19,359			—		—			943,303
Equity compensation under incentive plans		—		—		288,459			—		—			19,143			—			—		—			19,143
Distributions paid in kind units		378,486		—		—			—		—			—			—			—		—			—
Distributions paid		—		—		—			—		—			(183,381	)		(18,985	)		—		—			(202,366	)
Contributions from non-controlling interests		—		—		—			—		—			—			—			—		17,021			17,021
Distributions to non-controlling interests		—		—		—			—		—			—			—			—		(1,432	)		(1,432	)
Decrease in non-controlling interest related to business combination		—		—		—			—		—			—			—			—		(30,535	)		(30,535	)
Net income (loss)		—		—		—			53,068		—			(165,923	)		14,243			—		6,975			(91,637	)
Balance at December 31, 2013		13,823,869		—		80,585,148		$	450,749	$	—		$	1,703,778		$	46,118		$	—	$	59,260		$	2,259,905
Issuance of units and General Partner capital contributions		—		5,060,000		3,558,005			—		122,258			121,583			2,523			—		—			246,364
Equity compensation under incentive plans		—		—		459,232			—		—			25,005			—			—		—			25,005
Purchase and retirement of treasury units		—		—		(66,321	)		—		—			(2,210	)		—					—			(2,210	)
Distributions paid in kind units		1,195,581		—		—			—		—			—			—			—		—			—
Distributions paid		—		—		—			—		(6,030	)		(210,076	)		(27,364	)		—		—			(243,470	)
Distributions payable		—		—		—			—		(2,609	)		—			—					—			(2,609	)
Contributions from non-controlling interests		—		—		—			—		—			—			—			—		11,720			11,720
Distributions to non-controlling interests		—		—		—			—		—			—			—			—		(5,882	)		(5,882	)
Net income		—		—		—			88,065		8,233			93,684			26,498			—		13,164			229,644
Balance at December 31, 2014		15,019,450		5,060,000		84,536,064		$	538,814	$	121,852		$	1,731,764		$	47,775		$	—	$	78,262		$	2,518,467

See accompanying notes to consolidated financial statements

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ATLAS PIPELINE PARTNERS, L.P. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)

	Years Ended December 31,
	2014			2013			2012
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$	229,644		$	(91,637	)	$	68,059
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization		202,543			168,617			90,029
Loss on goodwill impairment		—			43,866			—
Equity loss (income) in joint ventures		14,007			4,736			(6,323	)
Distributions received from equity method joint ventures		5,264			7,400			7,200
Non-cash compensation expense		25,116			19,344			11,635
Amortization of deferred finance costs		7,082			6,965			4,672
Loss on early extinguishment of debt		—			26,601			—
Loss (gain) on asset dispositions		(47,381	)		1,519			—
Income tax expense (benefit)		(2,376	)		(2,260	)		176
Change in operating assets and liabilities, net of business combinations:
Accounts receivable, prepaid expenses and other		(22,334	)		(73,307	)		(31,417	)
Accounts payable and accrued liabilities		13,963			61,449			37,952
Accounts payable and accounts receivable – affiliates		1,526			(2,588	)		2,825
Derivative accounts payable and receivable		(134,525	)		40,139			(10,170	)
Net cash provided by operating activities		292,529			210,844			174,638
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures		(647,747	)		(450,560	)		(373,533	)
Cash paid for business combinations, net of cash received		—			(975,887	)		(633,610	)
Net proceeds from asset disposition		130,966			—			—
Capital contributions to joint ventures		(8,061	)		(13,366	)		—
Other		503			(3,270	)		502
Net cash used in investing activities	$	(524,339	)	$	(1,443,083	)	$	(1,006,641	)

106

ATLAS PIPELINE PARTNERS, L.P. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS CONTINUED

(in thousands)

	Years Ended December 31,
	2014			2013			2012
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings under credit facility	$	1,271,000		$	1,267,000		$	1,170,500
Repayments under credit facility		(1,038,000	)		(1,408,000	)		(1,019,500	)
Net proceeds from issuance of long term debt		—			1,028,092			495,374
Repayment of long-term debt		—			(365,822	)		—
Payment of premium on retirement of debt		—			(25,581	)		—
Payment of deferred financing costs		(3,323	)		(929	)		(4,542	)
Payment for acquisition-based contingent consideration		—			(6,000	)		—
Principal payments on capital lease		(525	)		(10,750	)		(2,523	)
Net proceeds from issuance of common and preferred limited partner units		243,841			923,944			321,491
Purchase and retirement of treasury units		(2,210	)		—			(695	)
General Partner capital contributions		2,523			19,359			6,865
Contributions from non-controlling interest holders		11,720			17,021			182
Distributions to non-controlling interest holders		(5,882	)		(1,432	)		—
Distributions paid to common limited partners, preferred limited partners and the General Partner		(243,470	)		(202,366	)		(131,101	)
Other		(675	)		(781	)		(818	)
Net cash provided by financing activities		234,999			1,233,755			835,233
Net change in cash and cash equivalents		3,189			1,516			3,230
Cash and cash equivalents, beginning of period		4,914			3,398			168
Cash and cash equivalents, end of period	$	8,103		$	4,914		$	3,398

See accompanying notes to consolidated financial statements

107

ATLAS PIPELINE PARTNERS, L.P. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

NOTE 1 – BASIS OF PRESENTATION

Atlas Pipeline Partners, L.P. (the “Partnership”) is a publicly-traded (NYSE: APL) Delaware limited partnership engaged in the gathering, processing and treating of natural gas in the mid-continent and southwestern regions of the United States. The Partnership’s operations are conducted through subsidiary entities whose equity interests are owned by Atlas Pipeline Operating Partnership, L.P. (the “Operating Partnership”), a majority-owned subsidiary of the Partnership. At December 31, 2014, Atlas Pipeline Partners GP, LLC (the “General Partner”) owned a combined 2.0% general partner interest in the consolidated operations of the Partnership, through which it manages and effectively controls both the Partnership and the Operating Partnership. The General Partner is a wholly-owned subsidiary of Atlas Energy, L.P. (“ATLS”), a publicly-traded limited partnership (NYSE: ATLS). The remaining 98.0% ownership interest in the consolidated operations of the Partnership consists of limited partner interests. At December 31, 2014, the Partnership had 84,536,064 common units outstanding, including 1,641,026 common units held by the General Partner and 4,113,227 common units held by ATLS; 15,019,450 Class D convertible preferred units (“Class D Preferred Units”) outstanding (see Note 6); and 5,060,000 8.25% Class E cumulative redeemable perpetual preferred units (“Class E Preferred Units”) outstanding (see Note 6).

Certain amounts have been reclassified in prior period consolidated financial statements to conform to the current year presentation.

NOTE 2 – SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Principles of Consolidation and Non-Controlling Interest

The consolidated financial statements include the accounts of the Partnership, the Operating Partnership, a Variable Interest Entity (“VIE”) of which the Partnership is the primary beneficiary, and the Operating Partnership’s wholly-owned and majority-owned subsidiaries. The General Partner’s interest in the Operating Partnership is reported as part of its overall 2.0% general partner interest in the Partnership. All material intercompany transactions have been eliminated.

The Partnership’s consolidated financial statements include its 95% interest in joint ventures, which individually own a 100% interest in the WestOK natural gas gathering system and processing plants and a 72.8% undivided interest in the WestTX natural gas gathering system and processing plants. These joint ventures have a $1.9 billion note receivable from the holder of the non-controlling interest in the joint ventures, which is reflected within non-controlling interests on the Partnership’s consolidated balance sheets.

The Partnership’s consolidated financial statements also include its 60% interest in Centrahoma Processing LLC (“Centrahoma”). The remaining 40% ownership interest is held by MarkWest Oklahoma Gas Company LLC (“MarkWest”), a wholly-owned subsidiary of MarkWest Energy Partners, L.P. (NYSE: MWE).

The Partnership consolidates 100% of these joint ventures and reflects the non-controlling interest in the joint ventures on its statements of operations. The Partnership also reflects the non-controlling interest in the net assets of the joint venture as a component of equity on its consolidated balance sheets.

108

The WestTX joint venture has a 72.8% undivided joint interest in the WestTX system, of which the remaining 27.2% interest is owned by Pioneer Natural Resources Company (NYSE: PXD) (“Pioneer”). Due to the ownership of the WestTX system being in the form of an undivided interest, the WestTX joint venture proportionally consolidates its 72.8% ownership interest in the assets and liabilities and operating results of the WestTX system.

Comprehensive Income (Loss)

Comprehensive income (loss) includes net income (loss) and all other changes in the equity of a business during a period from transactions and other events and circumstances from non-owner sources that, under GAAP, have not been recognized in the calculation of net income (loss). These changes, other than net income (loss), are referred to as “other comprehensive income (loss)” and, for the Partnership, only include the effective portion of changes in the fair value of unsettled derivative contracts, which were previously accounted for as cash flow hedges (see Note 11). These contracts were wholly-owned by the Partnership and the related gains and losses were not shared with the non-controlling interests. The Partnership does not have any other types of transactions that would be included within other comprehensive income (loss). During the year ended December 31, 2012, the Partnership reclassified $4.4 million from other comprehensive income to natural gas and liquids sales within the Partnership’s consolidated statements of operations. During the years ended December 31, 2014 and 2013, no amounts were reclassified from other comprehensive income and the Partnership had no amounts outstanding within accumulated other comprehensive income.

Equity Method Investments

The Partnership’s consolidated financial statements include its previous interest in West Texas LPG Pipeline Limited Partnership (“WTLPG”), which was sold in May 2014 (see Note 5), and its interests in T2 LaSalle Gathering Company L.L.C. (“T2 LaSalle”), T2 Eagle Ford Gathering Company L.L.C. (“T2 Eagle Ford”), and T2 EF Cogeneration Holdings L.L.C. (“T2 Co-Gen”) (the “T2 Joint Ventures”), which were acquired as part of the acquisition of 100% of the equity interests of TEAK Midstream, LLC (“TEAK”) (the “TEAK Acquisition”) (see Notes 4 and 5).

The Partnership accounts for its investments in these joint ventures under the equity method of accounting. Under this method, the Partnership records its proportionate share of the joint ventures’ net income (loss) as equity income (loss) on its consolidated statements of operations. Investments in excess of the underlying net assets of equity method investees identifiable to property, plant and equipment or finite lived intangible assets are amortized over the useful life of the related assets and recorded as a reduction to equity investment on the Partnership’s consolidated balance sheet with an offsetting reduction to equity income on the Partnership’s consolidated statements of operations. Excess investment representing equity method goodwill is not subject to amortization and is accounted for as a component of the investment. No goodwill was recorded on the acquisition of WTLPG or the T2 Joint Ventures. Equity method investments are subject to impairment evaluation as necessary when events and circumstances indicate the carrying value of an equity investment may be less than its fair value. The Partnership noted no indicators of impairment for its equity method investments, and thus no impairment charges were recognized for the years ended December 31, 2014, 2013 and 2012.

Use of Estimates

The preparation of the Partnership’s consolidated financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities that exist at the date of the Partnership’s consolidated financial statements, as well as the reported amounts of revenue and expense during the reporting periods. The

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Partnership’s consolidated financial statements are based on a number of significant estimates, including revenue and expense accruals, depreciation and amortization, asset impairment, the fair value of derivative instruments, the probability of forecasted transactions, the allocation of purchase price to the fair value of assets acquired and other items. Actual results could differ from those estimates.

The natural gas industry principally conducts its business by processing actual transactions at the end of the month following the month of delivery. Consequently, the most current month’s financial results were recorded using estimated volumes and commodity market prices. Differences between estimated and actual amounts are recorded in the following month’s financial results. Management of the Partnership believes the operating results presented represent actual results in all material respects (see “–Revenue Recognition” accounting policy for further description).

Cash and Cash Equivalents

The Partnership considers all highly liquid investments with a remaining maturity of three months or less at the time of purchase to be cash equivalents. These cash equivalents consist principally of temporary investments of cash in short-term money market instruments. Checks outstanding at the end of a period that exceed available cash balances held at the bank are considered to be book overdrafts and are reclassified to accounts payable. At December 31, 2014 and 2013, the Partnership reclassified the balances related to book overdrafts of $23.9 million and $28.8 million, respectively, from cash and cash equivalents to accounts payable on its consolidated balance sheets.

Receivables

In evaluating the realizability of its accounts receivable, the Partnership performs ongoing credit evaluations of its customers and adjusts credit limits based upon payment history and the customer’s current creditworthiness, as determined by the Partnership’s review of its customers’ credit information. The Partnership extends credit on an unsecured basis to many of its customers. At December 31, 2014 and 2013, there were no material uncollectible accounts receivable.

NGL Linefill

NGL linefill represents amounts receivable for NGLs delivered to counterparties, for which the counterparty will pay at a designated later period at a price determined by the then current market price. The Partnership’s NGL linefill held by some counterparties will be settled at various periods in the future and is defined as a Level 3 asset, which is valued at fair value using the same forward price curve utilized to value the Partnership’s NGL fixed price swaps. The Partnership’s NGL linefill held by other counterparties is adjusted on a monthly basis according to the volumes delivered to the counterparties each period and is valued on a first in first out (“FIFO”) basis. During the year ended December 31, 2014, the contracts related to this linefill on the WestTX and SouthTX systems were revised and the settlement and valuation was converted from a FIFO method to a fair value method. The Partnership’s NGL linefill is included within prepaid expenses and other on its consolidated balance sheets. See Note 12 for more information regarding the Partnership’s NGL linefill.

Property, Plant and Equipment

Property, plant and equipment are stated at cost or, upon acquisition of a business, at the fair value of the assets acquired. Maintenance and repairs which generally do not extend the useful life of an asset for two or more years through the replacement of critical components are expensed as incurred. Major renewals and improvements that generally extend the useful life of an asset for two or more years through the replacement of critical components are capitalized. The Partnership capitalizes interest on

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borrowed funds related to capital projects for periods during which activities are in progress to bring these projects to their intended use. Depreciation and amortization expense is based on cost less the estimated salvage value primarily using the straight-line method over the asset’s estimated useful life. The Partnership follows the composite method of depreciation and has determined the composite groups to be the major asset classes of its gathering, processing and treating systems. Under the composite depreciation method, any gain or loss upon disposition or retirement of pipeline, gas gathering, processing and treating components, is recorded to accumulated depreciation. When entire pipeline systems, gas plants or other property and equipment are retired or sold, any gain or loss is included in the Partnership’s results of operations.

Leased property and equipment meeting capital lease criteria are capitalized based on the minimum payments required under the lease and are included within property, plant and equipment on the Partnership’s consolidated balance sheets (see Note 7). Obligations under capital leases are accounted for as current and noncurrent liabilities and are included within debt on the Partnership’s consolidated balance sheets (see Note 14). Amortization is calculated on a straight-line method based upon the estimated useful lives of the assets.

Impairment of Long-Lived Assets

The Partnership reviews its long-lived assets for impairment whenever events or circumstances indicate the carrying amount of an asset may not be recoverable. If it is determined an asset’s estimated future undiscounted cash flows will not be sufficient to recover its carrying amount, an impairment charge will be recorded to reduce the carrying amount for that asset to its estimated fair value, if such carrying amount exceeds the fair value. The fair value measurement of a long-lived asset is based on inputs that are not observable in the market and therefore represent Level 3 inputs (see “–Fair Value of Financial Instruments”). No impairment charges were recognized for the years ended December 31, 2014, 2013 and 2012.

Asset Retirement Obligation

The Partnership performs ongoing analysis of asset removal and site restoration costs that the Partnership may be required to perform under law or contract once an asset has been permanently taken out of service. The Partnership has property, plant and equipment at locations owned by the Partnership and at sites leased or under right of way agreements. The Partnership is under no contractual obligation to remove the assets at locations it owns. In evaluating its asset retirement obligation, the Partnership reviews its lease agreements, right of way agreements, easements and permits to determine which agreements, if any, require an asset removal and restoration obligation. Determination of the amounts to be recognized is based upon numerous estimates and assumptions, including expected settlement dates, future retirement costs, future inflation rates and the credit-adjusted-risk-free interest rates. However, the Partnership was not able to reasonably measure the fair value of the asset retirement obligation as of December 31, 2014 or 2013 because the settlement dates were indeterminable. Any cost incurred in the future to remove assets and restore sites will be expensed as incurred.

Goodwill

Goodwill is the cost of an acquisition less the fair value of the net identifiable assets of the acquired business. Impairment testing for goodwill is done at the reporting unit level. A reporting unit is an operating segment or one level below an operating segment (also known as a component). A component of an operating segment is a reporting unit if the component constitutes a business for which discrete financial information is available, and segment management regularly reviews the operating results of that component. The Partnership evaluates goodwill for impairment annually, on December 31st

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for all reporting units, except SouthTX, which is evaluated on April 30th. The Partnership also evaluates goodwill for impairment whenever events or changes in circumstances indicate it is more likely than not the fair value of a reporting unit is less than its carrying amount. The Partnership first assesses qualitative factors to evaluate whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount as the basis for determining whether it is necessary to perform the two-step goodwill impairment test. If a two-step process goodwill impairment test is required, the first step involves comparing the fair value of the reporting unit, to which goodwill has been allocated with its carrying amount. If the carrying amount of a reporting unit exceeds its fair value, the second step of the process involves comparing the implied fair value to the carrying value of the goodwill for that reporting unit. If the carrying value of the goodwill of a reporting unit exceeds the implied fair value of that goodwill, the excess of the carrying value over the implied fair value is recognized as a reduction of goodwill on the Partnership’s consolidated balance sheets and a goodwill impairment loss on the Partnership’s consolidated statements of operations (see Note 8).

Intangible Assets

The Partnership amortizes intangible assets with finite useful lives over their estimated useful lives. If an intangible asset has a finite useful life, but the precise length of that life is not known, that intangible asset must be amortized over the best estimate of its useful life. At a minimum, the Partnership will assess the useful lives of all intangible assets on an annual basis, on December 31, to determine if adjustments are required. The estimated useful life for the Partnership’s customer contract intangible assets is based upon the approximate average length of customer contracts in existence and expected renewals at the date of acquisition. The estimated useful life for the Partnership’s customer relationship intangible assets is based upon the estimated average length of non-contracted customer relationships in existence at the date of acquisition, adjusted for management’s estimate of whether these individual relationships will continue in excess or less than the average length (see Note 8).

Derivative Instruments

The Partnership enters into certain financial contracts to manage its exposure to movement in commodity prices and interest rates. The Partnership manages and reports the derivative assets and liabilities on the basis of its net exposure to market risks and credit risks by counterparty, measured at fair value (see “–Fair Value of Financial Instruments”). The Partnership no longer applies hedge accounting for its derivatives; as such, changes in fair value of these derivatives are recognized immediately within derivative gain (loss), net in its consolidated statements of operations. Prior to discontinuance of hedge accounting, the change in the fair value of these commodity derivative instruments was recognized in accumulated other comprehensive loss within equity on the Partnership’s consolidated balance sheets. Amounts in accumulated other comprehensive loss were reclassified to the Partnership’s consolidated statements of operations at the time the originally hedged physical transactions affected earnings. The Partnership has reclassified all earnings out of accumulated other comprehensive loss, within equity on the Partnership’s consolidated balance sheets and had no amounts in accumulated other comprehensive loss as of December 31, 2014 and 2013.

Fair Value of Financial Instruments

The Partnership uses a valuation framework based upon inputs that market participants use in pricing an asset or liability, which are classified into two categories: observable inputs and unobservable inputs. Observable inputs represent market data obtained from independent sources; whereas, unobservable inputs reflect the Partnership’s own market assumptions, which are used if observable inputs are not reasonably available without undue cost and effort. These two types of inputs are further prioritized into the following hierarchy:

Level 1 – Unadjusted quoted prices in active markets for identical, unrestricted assets and liabilities that the reporting entity has the ability to access at the measurement date.

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Level 2 – Inputs other than quoted prices included within Level 1 that are observable for the asset and liability or can be corroborated with observable market data for substantially the entire contractual term of the asset or liability.

Level 3 – Unobservable inputs that reflect the entity’s own assumptions about the assumptions market participants would use in the pricing of the asset or liability and are consequently not based on market activity but rather through particular valuation techniques.

The Partnership uses a market approach fair value methodology to value the assets and liabilities for its outstanding derivative contracts (see Note 12). The Partnership manages and reports the derivative assets and liabilities on the basis of its net exposure to market risks and credit risks by counterparty. The Partnership has a financial risk management committee (the “Financial Risk Management Committee”), which sets the policies, procedures and valuation methods utilized by the Partnership to value its derivative contracts. The Financial Risk Management Committee members include, among others, the Chief Executive Officer, the Chief Financial Officer and the Vice Chairman of the managing board of the General Partner. The Financial Risk Management Committee receives daily reports and meets on a weekly basis to review the risk management portfolio and changes in the fair value in order to determine appropriate actions.

Income Taxes

The Partnership is generally not subject to U.S. federal and most state income taxes. The partners of the Partnership are liable for income tax in regard to their distributive share of the Partnership’s taxable income. Such taxable income may vary substantially from net income (loss) reported in the accompanying consolidated financial statements.

The Partnership evaluates tax positions taken or expected to be taken in the course of preparing the Partnership’s tax returns and disallows the recognition of tax positions not deemed to meet a “more-likely-than-not” threshold of being sustained by the applicable tax authority. The Partnership’s management does not believe it has any tax positions taken within its consolidated financial statements that would not meet this threshold. The Partnership’s policy is to reflect interest and penalties related to uncertain tax positions, when and if they become applicable. The Partnership has not recognized any potential interest or penalties in its consolidated financial statements as of December 31, 2014 or 2013.

The Partnership files Partnership Returns of Income in the U.S. and various state jurisdictions. With few exceptions, the Partnership is no longer subject to income tax examinations by major tax authorities for years prior to 2011. The Partnership is not currently being examined by any jurisdiction and is not aware of any potential examinations as of December 31, 2014 except for an ongoing examination by the Texas Comptroller of Public Accounts related to the Partnership’s Texas Franchise Tax for franchise report years 2008 through 2011.

APL Arkoma, Inc. is subject to federal and state income tax. The Partnership’s corporate subsidiary accounts for income taxes under the asset and liability method. Deferred income taxes are recognized for future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis and net operating loss and credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or

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settled. The effect of any tax rate change on deferred taxes is recognized in the period that includes the enactment date of the tax rate change. Realization of deferred tax assets is assessed and, if not more likely than not, a valuation allowance is recorded to write down the deferred tax assets to their net realizable value. The effective tax rate differs from the statutory rate due primarily to Partnership earnings that are generally not subject to federal and state income taxes at the Partnership level. See Note 10 for discussion of the Partnership’s federal and state income tax expense (benefits) of its taxable subsidiary as well as the Partnership’s net deferred income tax assets (liabilities).

Unit-Based Compensation

All unit-based payments to employees are recognized in the financial statements based on their fair values on the date of grant and are classified as equity on the Partnership’s consolidated balance sheets. Unit-based awards to non-employees, which have a cash option, are recognized in the financial statements based on their current fair value and are classified as liabilities on the Partnership’s consolidated balance sheets. Compensation expense associated with unit-based payments is recognized within general and administrative expenses on the Partnership’s statements of operations from the date of the grant through the date of vesting, amortized on a straight-line method. Generally, no expense is recorded for awards that do not vest due to forfeiture. See Note 17 for more information regarding the Partnership’s unit-based compensation.

Net Income (Loss) Per Common Unit

Basic net income (loss) attributable to common limited partners per unit is computed by dividing net income (loss) attributable to common limited partners by the weighted average number of common limited partner units outstanding during the period. Net income (loss) attributable to common limited partners is determined by deducting net income attributable to participating securities, if applicable, and net income (loss) attributable to the General Partner’s and the preferred unitholders’ interests. The General Partner’s interest in net income (loss) is calculated on a quarterly basis based upon its 2.0% general partner interest and incentive distributions to be distributed for the quarter (see Note 6), with a priority allocation of net income to the General Partner’s incentive distributions, if any, in accordance with the partnership agreement, and the remaining net income (loss) allocated with respect to the General Partner’s and limited partners’ ownership interests.

The Partnership presents net income (loss) per unit under the two-class method for master limited partnerships, which considers whether the incentive distributions of a master limited partnership represent a participating security when considered in the calculation of earnings per unit under the two-class method. The two-class method considers whether the partnership agreement contains any contractual limitations concerning distributions to the incentive distribution rights that would impact the amount of earnings to allocate to the incentive distribution rights for each reporting period. If distributions are contractually limited to the incentive distribution rights’ share of currently designated available cash for distributions as defined under the partnership agreement, undistributed earnings in excess of available cash should not be allocated to the incentive distribution rights. Under the two-class method, management of the Partnership believes the partnership agreement contractually limits cash distributions to available cash; therefore, undistributed earnings are not allocated to the incentive distribution rights.

Unvested share-based payment awards that contain non-forfeitable rights to dividends or dividend equivalents (whether paid or unpaid) are participating securities and are included in the computation of earnings per unit pursuant to the two-class method. The Partnership’s phantom unit awards, which consist of common units issuable under the terms of its long-term incentive plans and incentive compensation agreements (see Note 17), contain non-forfeitable rights to distribution equivalents of the Partnership. The participation rights result in a non-contingent transfer of value each time the Partnership

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declares a distribution or distribution equivalent right during the award’s vesting period. However, unless the contractual terms of the participating securities require the holders to share in the losses of the entity, net loss is not allocated to the participating securities. Therefore, the net income (loss) utilized in the calculation of net income (loss) per unit must be determined based upon the allocation of only net income to the phantom units on a pro-rata basis.

Class D Preferred Units participate in distributions with the common limited partner units according to a predetermined formula (see Note 6), thus they are considered participating securities and are included in the computation of earnings per unit pursuant to the two-class method. The participation rights result in a non-contingent transfer of value each time the Partnership declares a distribution. However, the contractual terms of the Class D Preferred Units do not require the holders to share in the losses of the entity, therefore the net income (loss) utilized in the calculation of net income (loss) per unit must be determined based upon the allocation of only net income to the Class D Preferred Units on a pro-rata basis.

Class E Preferred Units do not participate in distributions with the common limited partner units according to a predetermined formula, but rather receive distributions based upon a set percentage rate (see Note 6), thus they are not considered participating securities. However, income available to common limited partners is reduced by the distributions accumulated for the period on the Class E Preferred Units, whether declared or not, since the distributions on Class E Preferred Units are cumulative.

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The following is a reconciliation of net income (loss) allocated to the General Partner and common limited partners for purposes of calculating net income (loss) attributable to common limited partners per unit (in thousands):

	Years Ended December 31,
	2014			2013			2012
Net income (loss)	$	229,644		$	(91,637	)	$	68,059
Income attributable to non-controlling interests		(13,164	)		(6,975	)		(6,010	)
Preferred unit imputed dividend effect		(45,513	)		(29,485	)		—
Preferred unit dividends in kind		(42,552	)		(23,583	)		—
Preferred unit dividends		(8,233	)		—			—
Net income (loss) attributable to common limited partners and the General Partner		120,182			(151,680	)		62,049
General Partner’s cash incentive distributions		24,576			17,646			8,583
General Partner’s ownership interest		1,922			(3,403	)		1,075
Net income attributable to the General Partner’s ownership interests		26,498			14,243			9,658
Net income (loss) attributable to common limited partners		93,684			(165,923	)		52,391
Net income attributable to participating securities – phantom units(1)		1,630			—			772
Net income attributable to participating securities – Class D Preferred Units(2)		13,932			—			—
Net income attributable to participating securities		15,562			—			772
Net income (loss) utilized in the calculation of net income (loss) attributable to common limited partners per unit	$	78,122		$	(165,923	)	$	51,619

(1) Net income attributable to common limited partners’ ownership interest is allocated to the phantom units on a pro-rata basis (weighted average phantom units outstanding as a percentage of the sum of the weighted average phantom units and common limited partner units outstanding). For the year ended December 31, 2013, net loss attributable to common limited partners’ ownership interest is not allocated to approximately 1,240,000 weighted average phantom units because the contractual terms of the phantom units as participating securities do not require the holders to share in the losses of the entity.

(2) Net income attributable to common limited partners’ ownership interest is allocated to the Class D Preferred Units on a pro-rata basis (weighted average Class D Preferred Units outstanding, plus a contractual yield premium of 1.5%, as a percentage of the sum of the weighted average Class D Preferred Units and common limited partner units outstanding). For the year ended December 31, 2013, net loss attributable to common limited partners’ ownership interest is not allocated to approximately 9,110,000 weighted average Class D Preferred Units because the contractual terms of the Class D Preferred Units as participating securities do not require the holders to share in the losses of the entity.

Diluted net income (loss) attributable to common limited partners per unit is calculated by dividing net income (loss) attributable to common limited partners, plus income allocable to participating securities, by the sum of the weighted average number of common limited partner units outstanding plus the dilutive effect of outstanding participating securities and the effects of outstanding convertible securities. The phantom units and Class D Preferred Units are participating securities included in the calculation of diluted net income (loss) attributable to common units, due to their participation rights and due to their dilution if converted. The Class E Preferred Units are not participating securities and are not convertible and thus are not included in the units outstanding for calculation of diluted net income (loss) attributable to common limited partners per unit.

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The following table sets forth the reconciliation of the Partnership’s weighted average number of common limited partner units used to compute basic net income (loss) attributable to common limited partners per unit with those used to compute diluted net income (loss) attributable to common limited partners per unit (in thousands):

	Years Ended December 31,
	2014		2013		2012
Weighted average number of common limited partner units – basic		82,257		74,364		54,326
Add effect of dilutive securities – phantom units(1)		1,713		—		812
Add effect of convertible preferred limited partner units(2)		14,414		—		—
Weighted average common limited partner units – diluted		98,384		74,364		55,138

(1) For the year ended December 31, 2013, approximately 1,240,000 weighted average phantom units were excluded from the computation of diluted net income (loss) attributable to common limited partners per unit, because the inclusion of such phantom units would have been anti-dilutive.

(2) For the year ended December 31, 2013, approximately 9,110,000 weighted average Class D Preferred Units were excluded from the computation of diluted net income (loss) attributable to common limited partners as the impact of the conversion would have been anti-dilutive.

Environmental Matters

The Partnership is subject to various federal, state and local laws and regulations relating to the protection of the environment. The Partnership has established procedures for the ongoing evaluation of its operations, to identify potential environmental exposures and to comply with regulatory policies and procedures, including legislation related to greenhouse gas emissions. Environmental expenditures that relate to current operations are expensed or capitalized as appropriate. Expenditures that relate to an existing condition caused by past operations, and do not contribute to current or future revenue generation, are expensed. Liabilities are recorded when environmental assessments and/or clean-ups are probable, and the costs can be reasonably estimated. At this time, the Partnership is unable to assess the timing and/or effect of potential liabilities related to greenhouse gas emissions or other environmental issues. The Partnership maintains insurance, which may cover, in whole or in part, certain environmental expenditures. At December 31, 2014 and 2013, the Partnership had no material environmental matters requiring specific disclosure or requiring the recognition of a liability.

Segment Information

As a result of the sale of the Partnership’s subsidiaries that owned an interest in WTLPG on May 14, 2014 (see Note 5), the Partnership assessed its reportable segments and realigned its reportable segments into two new segments: Oklahoma Gathering and Processing (“Oklahoma”) and Texas Gathering and Processing (“Texas”). These reportable segments reflect the way the Partnership will manage its operations going forward. The Partnership has adjusted its segment presentation from the amounts previously presented to reflect the realignment of the segments.

The Oklahoma segment consists of the SouthOK and WestOK operations, which are comprised of natural gas gathering, processing and treating assets servicing drilling activity in the Anadarko, Ardmore and Arkoma Basins and which were formerly included within the previous Gathering and Processing segment. Oklahoma revenues are primarily derived from the sale of residue gas and NGLs and the gathering, processing and treating of natural gas within the state of Oklahoma.

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The Texas segment consists of (1) the SouthTX and WestTX operations, which are comprised of natural gas gathering and processing assets servicing drilling activity in the Permian Basin and the Eagle Ford Shale play in southern Texas; and (2) the natural gas gathering assets located in the Barnett Shale play in Texas. These assets were formerly included within the previous Gathering and Processing segment. Texas revenues are primarily derived from the sale of residue gas and NGLs and the gathering and processing of natural gas within the state of Texas.

The previous Transportation and Treating segment, which consisted of (1) the gas treating operations, which own contract gas treating facilities located in various shale plays; and (2) the former subsidiaries’ interest in WTLPG, has been eliminated and the financial information is now included within Corporate and Other. The natural gas gathering assets located in the Appalachian Basin in Tennessee, which were formerly included in the previous Gathering and Processing Segment, are now included within Corporate and Other.

Revenue Recognition

The Partnership’s revenue primarily consists of the sale of natural gas and NGLs along with the fees earned from its gathering, processing and treating operations. Under certain agreements, the Partnership purchases natural gas from producers and moves it into receipt points on its pipeline systems, and then sells the natural gas, and produced NGLs and condensate, if any, off delivery points on its systems. Under other agreements, the Partnership gathers natural gas across its systems, from receipt to delivery point, without taking title to the natural gas. Revenue associated with the physical sale of natural gas and NGLs is recognized upon physical delivery. Revenue related to fees for providing natural gas gathering, processing and treating services is recognized based on throughput volumes during the period, with throughput volumes generally measured at the wellhead.

The Partnership accrues unbilled revenue and the related purchase costs due to timing differences between the delivery of natural gas, NGLs, and condensate and the receipt of a delivery statement. This revenue is recorded based upon volumetric data from the Partnership’s records and management estimates of the related gathering and compression fees and applicable product prices. The Partnership had unbilled revenues at December 31, 2014 and 2013 of $175.3 million and $134.9 million, respectively, which are included in accounts receivable within its consolidated balance sheets.

Cost of Sales and Accrued Producer Liabilities

The Partnership’s cost of sales primarily consists of sales proceeds required to be remitted to producers and shippers under POP contracts and natural gas purchases made in order to satisfy obligations under Keep-Whole contracts. Accrued producer liabilities on the Partnership’s consolidated balance sheets represent accrued purchase commitments payable to producers related to gas gathered and processed through its system under its POP and Keep-Whole contracts. The following describes how cost of sales are recognized for POP contracts and Keep-Whole contracts:

POP Contracts. These contracts provide for the Partnership to retain a negotiated percentage of the sale proceeds from residue gas and NGLs it gathers and processes, with the remainder being remitted to the producer. In this contract-type, the Partnership and the producer are directly dependent on the volume of the commodity and its value; the Partnership effectively owns a percentage of the commodity and revenues are directly correlated to its market value. The Partnership’s cost of sales are equal to the proceeds required to be remitted to the producers in connection with natural gas and liquids sold during the period.

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Keep-Whole Contracts. These contracts require the Partnership, as the processor and gatherer, to gather or purchase raw natural gas at current market rates per MMBTU. The volume and energy content of gas gathered or purchased is based on the measurement at an agreed upon location (generally at the wellhead). The BTU quantity of gas redelivered or sold at the tailgate of the Partnership’s processing facility may be lower than the BTU quantity purchased at the wellhead primarily due to the NGLs extracted from the natural gas when processed through a plant. The Partnership must make up or “keep the producer whole” for this loss in BTU quantity. To offset the make-up obligation, the Partnership retains the NGLs, which are extracted, and sells them for its own account. The Partnership recognizes the purchases of natural gas during the period to keep producers whole as costs of sales under Keep-Whole contracts. During 2014, the Partnership renegotiated most of its Keep-Whole contracts and converted them into POP contracts. As a result, the Partnership does not expect Keep-Whole contracts to have any material impact to its cost of sales going forward.

Fee-based or POP contracts sometimes include fixed recovery terms, which mean products returned to the producer are calculated using an agreed NGL recovery factor, regardless of the volumes of NGLs actually recovered through processing.

Recently Adopted Accounting Standards

In July 2013, the FASB issued Accounting Standard Update (“ASU”) 2013-11, “Income Taxes (Topic 740) –Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists,” which, among other changes, requires an entity to present an unrecognized tax benefit as a liability and not net with deferred tax assets when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward is not available at the reporting date to settle any additional income taxes under the tax law of the applicable jurisdiction that would result from the disallowance of a tax position or when the tax law of the applicable tax jurisdiction does not require, and the entity does not intend to, use the deferred tax asset for such purpose. These requirements are effective for interim and annual reporting periods beginning after December 15, 2013. These amendments should be applied prospectively to all unrecognized tax benefits that exist at the effective date. Retrospective application is permitted. The Partnership applied these requirements upon the adoption of ASU 2013-11 on January 1, 2014. The application had no material impact on the Partnership’s financial position or results of operations.

Recently Issued Accounting Standard Updates

On February 18, 2015, the FASB issued ASU 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis, which is intended to improve targeted areas of consolidation guidance for legal entities such as limited partnerships, limited liability corporations, and securitization structures. The amendment simplifies the consolidation evaluation for reporting organizations that are required to evaluate whether they should consolidate certain legal entities. The Partnership does not expect the ASU to impact how it currently consolidates its legal entities.The amendments in this ASU will be effective for periods beginning after December 15, 2015, for public companies. The Partnership plans to apply the amendment to annual and interim periods beginning on January 1, 2016.

In November 2014, the FASB issued ASU 2014-17, Business Combinations (Topic 805): Pushdown Accounting (a consensus of the FASB Emerging Issues Task Force). The amendments in this ASU apply to the separate financial statements of an acquired entity and its subsidiaries upon the occurrence of an event in which an acquirer obtains control of the acquired entity. The amendments provide an acquired entity with an option to apply pushdown accounting in its separate financial statements upon occurrence of an event in which an acquirer obtains control of the acquired entity. An acquired entity may elect the option to apply pushdown accounting in the reporting period in which the

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change-in-control event occurs, or in a subsequent reporting period to the acquired entity’s most recent change-in-control event. The amendments in this ASU are effective on November 18, 2014. After the effective date, the Partnership can make an election to apply the guidance to future change-in-control events or to its most recent change-in-control event. The Partnership will analyze its option to apply pushdown accounting upon a change-in-control event, but does not expect the new standard to have a material impact on its financial position, results of operations and disclosures.

In August 2014, the FASB issued ASU 2014-15, Presentation of Financial Statements – Going Concern (Subtopic 205-40): Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern. ASU 2014-15 is intended to define management’s responsibility to evaluate whether there is substantial doubt about an organization’s ability to continue as a going concern and to provide related footnote disclosures. The amendments in ASU 2014-15 are effective for the annual period ending after December 15, 2016, and for annual periods and interim periods thereafter. Early application is permitted. The Partnership plans on applying the new standard for the annual period ending December 31, 2016. The Partnership does not expect the new standard to have an impact on its disclosures.

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606). ASU 2014-09 will supersede the revenue recognition requirements in Topic 605 “Revenue Recognition,” and most industry-specific guidance. The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The amendments in ASU 2014-09 are effective for interim and annual reporting periods beginning after December 15, 2016. Early application is not permitted. An entity should apply the amendments in this ASU using one of the following methods: (1) retrospectively to each prior reporting period presented, or (2) retrospectively with the cumulative effect of initially applying the standard recognized at the date of initial application. These requirements will be applied upon the application of ASU 2014-09 on January 1, 2017. The Partnership is currently in the process of evaluating which method to use for application of ASU 2014-09 and is still determining the impacts of ASU 2014-09 on its financial position, results of operations and disclosures, however, the Partnership does not expect the new standard to have a material impact on the results of operations.

NOTE 3 – TARGA RESOURCES PARTNERS LP MERGER

On October 13, 2014, the Partnership, ATLS and the General Partner entered into a definitive merger agreement with Targa Resources Corp. (“TRC”), Targa Resources Partners LP (“TRP”) and certain other parties (the “Merger Agreement”), pursuant to which TRP agreed to acquire the Partnership through a merger of a newly-formed, wholly-owned subsidiary of TRP with and into the Partnership (the “Merger”). Upon completion of the Merger, holders of the Partnership’s common units will have the right to receive (i) 0.5846 TRP common units and (ii) $1.26 in cash for each Partnership common unit. Pursuant to the terms and conditions of the Merger Agreement, the Partnership exercised its right under the certificate of designation of the Class D Preferred Units to convert all outstanding Class D Preferred Units into common units, which occurred on January 22, 2015 (see Note 6 –Class D Preferred Units). Additionally, on January 27, 2015, the Partnership announced its intention to exercise its right under the certificate of designation of the Class E Preferred Units to redeem the Class E Preferred Units. TRP has agreed to deposit the funds for redemption with the paying agent (see Note 6 –Class E Preferred Units).

Concurrently with the Merger Agreement, ATLS announced that it entered into a definitive merger agreement with TRC (the “ATLS Merger Agreement”), pursuant to which TRC agreed to acquire ATLS through a merger of a newly formed wholly-owned subsidiary of TRC with and into ATLS (the “ATLS Merger”). Upon completion of the ATLS Merger, holders of ATLS common units will have the right to receive (i) 0.1809 TRC shares of common stock, par value $0.001 per share, and (ii) $9.12 in cash, without interest, for each ATLS common unit.

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Concurrently with the Merger Agreement and the ATLS Merger Agreement, ATLS agreed to (i) transfer its assets and liabilities, other than those related to the Partnership, to Atlas Energy Group, LLC (“Atlas Energy Group”), which is currently a subsidiary of ATLS and (ii) immediately prior to the ATLS Merger, effect a pro rata distribution to the ATLS unitholders of common units of Atlas Energy Group representing a 100% interest in Atlas Energy Group (the “Spin-Off”).

Following the announcement on October 13, 2014 of the Merger, the Partnership, the General Partner, ATLS, TRC, TRP, Targa Resources GP LLC, Trident MLP Merger Sub LLC and the members of the General Partner’s board of directors were named as defendants in five putative unitholder class action lawsuits challenging the Merger, one of which has subsequently been voluntarily dismissed. In addition, ATLS, Atlas Energy GP LLC (“ATLS GP”), TRC, Trident GP Merger Sub LLC and members of ATLS GP’s board of directors were named as defendants in two putative unitholder class action lawsuits challenging the ATLS Merger, one of which has subsequently been voluntarily dismissed. The lawsuits filed generally allege that the individual defendants breached their fiduciary duties and/or contractual obligations by, among other things, failing to obtain sufficient value for the Partnership’s and ATLS unitholders, respectively, in the Merger and ATLS Merger. The plaintiffs seek, among other things, injunctive relief, unspecified compensatory and rescissory damages, attorney’s fees, other expenses and costs.

ATLS has also been named as a defendant in a putative class action and derivative lawsuit brought on January 28, 2015 and amended on February 23, 2015, by a shareholder of TRC against TRC and its directors. The lawsuit generally alleges that the individual defendants breached their fiduciary duties by, among other things, approving the ATLS Merger and failing to disclose purportedly material information concerning the ATLS Merger. The lawsuit seeks, among other things, injunctive relief, compensatory and rescissory damages, attorney’s fees, interest and costs.

All of the above referenced lawsuits, except for the January 2015 lawsuit and the two lawsuits that have been voluntarily dismissed, were settled, subject to court approval, pursuant to memoranda of understanding executed in February 2015, which are conditioned upon, among other things, the execution of an appropriate stipulations of settlement. The stipulations of settlement will be subject to customary conditions, including, among other things, judicial approval of the proposed settlements contemplated by the memoranda of understanding. There can be no assurance that the parties will ultimately enter into stipulations of settlement, that the court will approve the settlements, that the settlements will not be terminated according to their terms or that some unitholders will not opt-out of the settlements.

At this time, the Partnership cannot reasonably estimate the range of possible loss as a result of the lawsuits. See “Item 3: Legal Proceedings” for more information regarding these lawsuits.

The Partnership incurred $6.1 million of expenses related to the Merger for the year ended December 31, 2014, which is included in other expenses on its consolidated statements of operations.

The closing of the Merger is subject to approval by holders of a majority of the Partnership’s common units and other closing conditions, including the closing of the ATLS Merger and the Spin-Off. On February 20, 2015, the Partnership held a special meeting, where holders of a majority of its common units approved the Merger. In addition, at special meetings held on the same day: (i) a majority of the holders of ATLS common units approved the ATLS Merger and (ii) a majority of the holders of TRC common stock approved the issuance of TRC shares in connection with the Merger. Completion of each of the ATLS Merger and the Spin-Off are also conditioned on the parties standing ready to complete the Merger. The Merger is expected to close on February 27, 2015.

On February 27, 2015, the Partnership agreed to transfer 100% of the Partnership’s interest in gas gathering assets located in the Appalachian Basin of Tennessee to the Partnership’s affiliate, Atlas Resource Partners, L.P. (NYSE: ARP) (“ARP”), for $1.0 million plus working capital adjustments, concurrent with the closing of the Merger on February 27, 2015.

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NOTE 4 – ACQUISITIONS

TEAK Midstream, LLC

On May 7, 2013, the Partnership completed the TEAK Acquisition, which includes 100% of the equity interests of TEAK, for $974.7 million in cash, including final purchase price adjustments, less cash received. The assets of these companies include gas gathering and processing facilities in Texas, which are referred to as SouthTX. The acquisition included a 75% interest in T2 LaSalle; a 50% interest in T2 Eagle Ford; and a 50% interest in T2 Co-Gen.

The Partnership funded the purchase price for the TEAK Acquisition in part from the private placement of $400.0 million of Class D Preferred Units for net proceeds of $397.7 million, plus the General Partner’s contribution of $8.2 million to maintain its 2.0% general partner interest in the Partnership (see Note 6); and in part from the sale of 11,845,000 common limited partner units in a public offering for net proceeds of approximately $388.4 million, plus the General Partner’s contribution of $8.3 million to maintain its 2.0% general partner interest in the Partnership (see Note 6). The Partnership funded the remaining purchase price from its senior secured revolving credit facility, and issued $400.0 million of 4.75% unsecured senior notes due November 15, 2021 (“4.75% Senior Notes”) on May 10, 2013 for net proceeds of $391.2 million to reduce the level of borrowings under the revolving credit facility as part of the TEAK Acquisition (see Note 14).

The Partnership accounted for this transaction as a business combination. Accordingly, the Partnership evaluated the identifiable assets acquired and liabilities assumed at their acquisition date fair values. The following table presents the values assigned to the assets acquired and liabilities assumed in the TEAK Acquisition, based on their final estimated fair values at the date of the acquisition (in thousands):

Cash	$	8,074
Accounts receivable		11,055
Prepaid expenses and other		1,626
Property, plant and equipment		197,683
Intangible assets		430,000
Goodwill		186,050
Equity method investment in joint ventures		184,327
Total assets acquired		1,018,815
Accounts payable and accrued liabilities		(34,995	)
Other long term liabilities		(1,075	)
Total liabilities acquired		(36,070	)
Net assets acquired		982,745
Less cash received		(8,074	)
Net cash paid for acquisition	$	974,671

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Cardinal Midstream, LLC

On December 20, 2012, the Partnership completed the acquisition of 100% of the equity interests held by Cardinal Midstream, LLC (“Cardinal”) in three wholly-owned subsidiaries for $598.9 million in cash, including final purchase price adjustments, less cash received (the “Cardinal Acquisition”). The assets of these companies include gas gathering, processing and treating facilities in Arkansas, Louisiana, Oklahoma and Texas. The acquisition includes a 60% interest in Centrahoma. The remaining 40% ownership interest in Centrahoma is held by MarkWest, a wholly-owned subsidiary of MarkWest Energy Partners, L.P. (NYSE: MWE).

The Partnership funded the purchase price for the Cardinal Acquisition in part from the private placement of $175.0 million of its 6.625% senior unsecured notes due October 1, 2020 (“6.625% Senior Notes”) at a premium of 3.0%, for net proceeds of $176.1 million (see Note 14); and from the sale of 10,507,033 common limited partner units in a public offering at a negotiated purchase price of $31.00 per unit, generating net proceeds of approximately $319.3 million, including the General Partner’s contribution of $6.7 million to maintain its 2.0% general partner interest in the Partnership (see Note 6). The Partnership funded the remaining purchase price from its senior secured revolving credit facility (see Note 14).

The Partnership accounted for this transaction as a business combination. Accordingly, the Partnership evaluated the identifiable assets acquired and liabilities assumed at their respective acquisition date fair values. The following table presents the values assigned to the assets acquired and liabilities assumed in the Cardinal Acquisition, based on their final estimated fair values as of the date of acquisition, including the 40% non-controlling interest of Centrahoma held by MarkWest (in thousands):

Cash	$	1,184
Accounts receivable		13,783
Prepaid expenses and other		1,289
Property, plant and equipment		246,787
Intangible assets		232,740
Goodwill		214,090
Total assets acquired		709,873
Current portion of long-term debt		(341	)
Accounts payable and accrued liabilities		(14,596	)
Deferred tax liability, net		(35,353	)
Long-term debt, less current portion		(604	)
Total liabilities acquired		(50,894	)
Non-controlling interest		(58,905	)
Net assets acquired		600,074
Less cash received		(1,184	)
Net cash paid for acquisition	$	598,890

The fair value of MarkWest’s 40% non-controlling interest in Centrahoma was based upon the purchase price allocated to the 60% controlling interest the Partnership acquired using an income approach. This measurement uses significant inputs that are not observable in the market and thus represents a fair value measurement categorized within Level 3 of the fair value hierarchy. The 40% non-controlling interest in Centrahoma was reduced by a 5.0% adjustment for lack of control that market participants would consider when measuring its fair value.

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NOTE 5 – EQUITY METHOD INVESTMENTS

West Texas LPG Pipeline Limited Partnership

On May 14, 2014, the Partnership completed the sale of two subsidiaries, which held an aggregate 20% interest in WTLPG, to a subsidiary of Martin Midstream Partners LP (NYSE: MMLP). The Partnership received $131.0 million in proceeds, net of selling costs and final working capital adjustments, which were used to pay down the Partnership’s revolving credit facility (see Note 14). As a result of the sale, the Partnership recorded a $47.8 million gain on asset dispositions, which is included in its consolidated statements of operations for the year ended December 31, 2014.

WTLPG owns a common-carrier pipeline system that transports NGLs from New Mexico and Texas to Mont Belvieu, Texas for fractionation. Prior to the sale of WTLPG, the Partnership accounted for its subsidiaries’ ownership interest in WTLPG under the equity method of accounting, with recognition of income of WTLPG as equity income in joint ventures on its consolidated statements of operations.

T2 Joint Ventures

On May 7, 2013, the Partnership acquired the T2 Joint Ventures as part of the TEAK Acquisition (see Note 4). The T2 Joint Ventures are operated by a subsidiary of Southcross Holdings, L.P. (“Southcross”), the investor owning the remaining interests. The T2 Joint Ventures were formed to provide services for the benefit of the joint interest owners and have capacity lease agreements with the joint interest owners, which cover the costs of operations of the T2 Joint Ventures.

The Partnership evaluated whether the T2 Joint Ventures should be subject to consolidation. The T2 Joint Ventures do meet the qualifications of a VIE, but the Partnership does not meet the qualifications as the primary beneficiary. Even though the Partnership owns a 50% or greater interest in the T2 Joint Ventures, the Partnership does not have controlling financial interests in these entities. Since the Partnership shares equal management rights with Southcross, and Southcross is the operator of the T2 Joint Ventures, the Partnership determined that it is not the primary beneficiary of the VIEs and should not consolidate the T2 Joint Ventures. The Partnership accounts for its investment in the T2 Joint Ventures under the equity method, since the Partnership does not have a controlling financial interest, but does have a significant influence. The Partnership’s maximum exposure to loss as a result of its involvement with the T2 Joint Ventures includes its equity investment, any additional capital contribution commitments and the Partnership’s share of any approved operating expenses incurred by the VIEs.

The following table presents the value of the Partnership’s equity method investments in joint ventures as of December 31, 2014 and 2013 (in thousands):

	December 31,		December 31,
	2014		2013
WTLPG	$	—	$	85,790
T2 LaSalle		55,911		50,534
T2 Eagle Ford		109,517		97,437
T2 EF Co-Gen		11,784		14,540
Equity method investment in joint ventures	$	177,212	$	248,301

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The following table presents the Partnership’s equity income (loss) in joint ventures for the years ended December 31, 2014, 2013 and 2012 (in thousands):

	Years Ended December 31,
	2014			2013			2012
WTLPG	$	2,611		$	4,988		$	6,323
T2 LaSalle		(4,271	)		(3,127	)		—
T2 Eagle Ford		(8,754	)		(4,408	)		—
T2 EF Co-Gen		(3,593	)		(2,189	)		—
Equity income (loss) in joint ventures	$	(14,007	)	$	(4,736	)	$	6,323

NOTE 6 – EQUITY

Common Units

In November 2012, the Partnership entered into an equity distribution program with Citigroup Global Markets, Inc. (“Citigroup”). Pursuant to this program, the Partnership offered and sold through Citigroup, as its sales agent, common units for $150.0 million. Sales were at market prices prevailing at the time of the sale. During the years ended December 31, 2013 and 2012, the Partnership issued 3,895,679 and 275,429 common units, respectively, under the equity distribution program for proceeds of $137.8 million and $8.7 million, respectively, net of $2.8 million and $0.2 million, respectively, in commissions incurred from Citigroup, and other expenses. The Partnership also received capital contributions from the General Partner of $2.9 million and $0.2 million during the years ended December 31, 2013 and 2012, respectively, to maintain its 2.0% general partner interest in the Partnership. The net proceeds from the common unit offering were utilized for general partnership purposes.

In December 2012, the Partnership sold 10,507,033 common units in a public offering at a price of $31.00 per unit, yielding net proceeds of approximately $319.3 million, including $6.7 million contributed by the General Partner to maintain its 2.0% general partner interest. The Partnership utilized the net proceeds from the common unit offering to partially finance the Cardinal Acquisition (see Note 4).

In April 2013, the Partnership sold 11,845,000 common units in a public offering at a price of $34.00 per unit, yielding net proceeds of $388.4 million after underwriting commissions and expenses. The Partnership also received a capital contribution from the General Partner of $8.3 million to maintain its 2.0% general partnership interest. The Partnership used the proceeds from this offering to fund a portion of the purchase price of the TEAK Acquisition (see Note 3).

On May 12, 2014, the Partnership entered into an Equity Distribution Agreement (the “2014 EDA”) with Citigroup, Wells Fargo Securities, LLC and MLV & Co. LLC, as sales agents. Pursuant to this program, the Partnership may offer and sell from time to time through its sales agents, common units having an aggregate value up to $250.0 million. Sales are at market prices prevailing at the time of the sale. However, the Partnership is currently restricted from selling common units by the Merger Agreement (see Note 3).

During the year ended December 31, 2014, the Partnership issued 3,558,005 common units, under the 2014 EDA for proceeds of $121.6 million, net of $1.2 million in commissions paid to the sales agents. The Partnership also received capital contributions from the General Partner of $2.5 million during the year ended December 31, 2014 to maintain its 2.0% general partner interest in the Partnership. The net proceeds from the common unit offerings and General Partner contributions were utilized for general partnership purposes.

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Cash Distributions

The Partnership is required to distribute, within 45 days after the end of each quarter, all its available cash (as defined in its partnership agreement) for that quarter to its common unitholders (subject to the rights of any other class or series of the Partnership’s securities with the right to share in the Partnership’s cash distributions) and to the General Partner. If common unit distributions in any quarter exceed specified target levels, the General Partner will receive between 15% and 50% of such distributions in excess of the specified target levels, including the General Partner’s 2.0% interest. The General Partner, which holds all the incentive distribution rights in the Partnership, has agreed to allocate up to $3.75 million of its incentive distribution rights per quarter back to the Partnership after the General Partner receives an initial $7.0 million per quarter pursuant to its incentive distribution rights.

Common unit and General Partner distributions declared by the Partnership for quarters ending from December 31, 2011 through September 30, 2014 were as follows:

For Quarter Ended	Date Cash Distribution Paid	Cash Distribution Per Common Limited Partner Unit		Total Cash Distribution to Common Limited Partners (in thousands)		Total Cash Distribution to the General Partner (in thousands)
December 31, 2011	February 14, 2012	$	0.55	$	29,489	$	2,031
March 31, 2012	May 15, 2012		0.56		30,030		2,217
June 30, 2012	August 14, 2012		0.56		30,085		2,221
September 30, 2012	November 14, 2012		0.57		30,641		2,409
December 31, 2012	February 14, 2013		0.58		37,442		3,117
March 31, 2013	May 15, 2013		0.59		45,382		3,980
June 30, 2013	August 14, 2013		0.62		48,165		5,875
September 30, 2013	November 14, 2013		0.62		49,298		6,013
December 31, 2013	February 14, 2014		0.62		49,969		6,095
March 31, 2014	May 15, 2014		0.62		49,998		6,099
June 30, 2014	August 14, 2014		0.63		51,781		7,055
September 30, 2014	November 14, 2014		0.64		54,080		8,115

On January 9, 2015, the Partnership declared a cash distribution of $0.64 per unit on its outstanding common limited partner units, representing the cash distribution for the quarter ended December 31, 2014. The $62.2 million distribution, including $8.1 million to the General Partner for its general partner interest and incentive distribution rights, was paid on February 13, 2015 to unitholders of record at the close of business on January 21, 2015.

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Class D Preferred Units

In November 2012, the Partnership entered into a unit purchase agreement for a private placement of $200.0 million of newly-created Class D Preferred Units to third party investors. The unit purchase agreement was intended to provide financing for a portion of the Cardinal Acquisition. The unit purchase agreement was terminated when the Partnership raised more than $150.0 million in common unit equity. The Partnership paid each investor a commitment fee equal to 2.0% of its commitment at the time of termination for a total expense of $4.0 million, which was recorded as other costs on the Partnership’s consolidated statements of operations.

On May 7, 2013, the Partnership completed a private placement of $400.0 million of its Class D Preferred Units to third party investors, at a negotiated price per unit of $29.75, resulting in net proceeds of $397.7 million pursuant to the Class D preferred unit purchase agreement dated April 16, 2013 (the “Commitment Date”). The General Partner contributed $8.2 million to maintain its 2.0% general partnership interest upon the issuance of the Class D Preferred Units. The Partnership used the proceeds to fund a portion of the purchase price of the TEAK Acquisition (see Note 4). The Class D Preferred Units were offered and sold in a private transaction exempt from registration under Section 4(2) of the Securities Act of 1933, as amended. The Partnership had the right to convert the Class D Preferred Units plus any unpaid distributions, in whole but not in part, beginning one year following their issuance, into common units.

The fair value of the Partnership’s common units on the Commitment Date was $36.52 per unit, resulting in an embedded beneficial conversion discount (“discount”) on the Class D Preferred Units of $91.0 million. The Partnership recognized the fair value of the Class D Preferred Units with the offsetting intrinsic value of the discount within Class D preferred limited partner interests on its consolidated balance sheets as of December 31, 2014 and 2013. The discount is being accreted and recognized as imputed dividends over the term of the Class D Preferred Units as a reduction to net income attributable to the common limited partners and the General Partner on the Partnership’s consolidated statements of operations. The Partnership’s Class D Preferred Units are presented combined with a net $16.0 million and $61.5 million unaccreted discount on the Partnership’s consolidated balance sheets as of December 31, 2014 and 2013, respectively. The Partnership recorded $45.5 million and $29.5 million in the years ended December 31, 2014 and 2013, respectively, within preferred unit imputed dividend effect on the Partnership’s consolidated statements of operations to recognize the accretion of the discount.

The Class D Preferred Units received distributions of additional Class D Preferred Units in each of the quarterly periods following their issuance in May 2013. The amount of the distribution was determined based upon the cash distribution per unit paid each quarter on the Partnership’s common limited partner units plus a preferred yield premium. The Partnership recorded Class D Preferred Unit distributions in kind of $42.6 million and $23.6 million for the years ended December 31, 2014 and 2013, respectively, as preferred unit dividends in kind on the Partnership’s consolidated statements of operations.

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Class D Preferred Unit distributions paid in kind by the Partnership for quarters ending from June 30, 2013 through September 30, 2014 were as follows:

For Quarter Ended	Date Preferred Unit Distributions Paid in Kind	Preferred Unit Distributions Paid in Kind(1)
June 30, 2013	August 14, 2013		138,598
September 30, 2013	November 14, 2013		239,888
December 31, 2013	February 14, 2014		274,785
March 31, 2014	May 15, 2014		305,983
June 30, 2014	August 14, 2014		294,439
September 30, 2014	November 14, 2014		320,374

(1) The partnership considers preferred unit distributions paid in kind to be non-cash financing activity.

On January 22, 2015, the Partnership exercised its right under the certificate of designation of the Class D Preferred Units (“Class D Certificate of Designation”) to convert all outstanding Class D Preferred Units and unpaid distributions into common limited partner units, based upon the Execution Date Unit Price of $29.75 per unit, as defined by the Class D Certificate of Designation. As a result of the conversion, 15,389,575 common limited partner units were issued.

Class E Preferred Units

On March 17, 2014, the Partnership issued 5,060,000 of its Class E Preferred Units to the public at an offering price of $25.00 per Class E Preferred Unit. The Partnership received $122.3 million in net proceeds. The proceeds were used to pay down the Partnership’s revolving credit facility.

The Partnership made cumulative cash distributions on the Class E Preferred Units from the date of original issue. The cash distributions were payable quarterly in arrears on January 15, April 15, July 15, and October 15 of each year. The initial distribution on the Class E Preferred Units was paid on July 15, 2014 in an amount equal to $0.67604 per unit, or approximately $3.4 million, representing the distribution for the period March 17, 2014 through July 14, 2014. Thereafter, the Partnership paid cumulative distributions in cash on the Class E Preferred Units on a quarterly basis at a rate of $0.515625 per unit, or 8.25% per year.

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Class E Preferred Unit distributions paid by the Partnership for the period from March 14, 2014 through October 14, 2014 were as follows:

Preferred Units Distribution Period	Date Class E Preferred Limited Partner Unit Distribution Paid	Cash Distribution Per Class E Preferred Limited Partner Unit		Total Cash Distribution on Class E Preferred Limited Partner Units (in thousands)
March 17, 2014 - July 14, 2014	July 15, 2014	$	0.676040	$	3,421
July 15, 2014 - October 14, 2014	October 15, 2014		0.515625		2,609

On January 15, 2015, the Partnership paid a cash distribution of $2.6 million on its outstanding Class E Preferred Units, representing the cash distribution for the period from October 15, 2014 through January 14, 2015. For the year ended December 31, 2014, the Partnership allocated net income of $8.2 million to the Class E Preferred Units for the dividends earned during the period, which was recorded as preferred unit dividends on its consolidated statements of operations.

On January 27, 2015, the Partnership delivered notice of its intention to redeem all outstanding shares of its Class E Preferred Units. The redemption of the Class E Preferred Units will occur immediately prior to the close of the Merger (See Note 3). The Partnership expects the Merger to close on February 27, 2015 and, accordingly, the redemption would also be on February 27, 2015. The Class E Preferred Units will be redeemed at a redemption price of $25.00 per unit, plus an amount equal to all accumulated and unpaid distributions on the Class E Preferred Units as of the redemption date. TRP has agreed to deposit the funds for such redemption with the paying agent.

NOTE 7 – PROPERTY, PLANT AND EQUIPMENT

The following is a summary of property, plant and equipment, including leased property and equipment meeting capital lease criteria (see Note 14) (in thousands):

	December 31. 2014			December 31, 2013			Estimated Useful Lives in Years
Pipelines, processing and compression facilities	$	3,527,004		$	2,885,303			2 - 40
Rights of way		208,310			203,136			40
Buildings		10,447			10,291			40
Furniture and equipment		14,725			13,800			3 - 7
Other		15,185			15,805			3 - 10
		3,775,671			3,128,335
Less – accumulated depreciation		(525,698	)		(404,143	)
	$	3,249,973		$	2,724,192

The Partnership recorded depreciation expense on property, plant and equipment, including capital lease arrangements (see Note 14), of $122.5 million, $99.7 million and $66.2 million for the years ended December 31, 2014, 2013 and 2012, respectively, on its consolidated statements of operations.

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The Partnership capitalizes interest on borrowed funds related to capital projects only for periods that activities are in progress to bring these projects to their intended use. The weighted average interest rate used to capitalize interest on borrowed funds was 5.5%, 5.8% and 6.4% for the years ended December 31, 2014, 2013, and 2012, respectively. The amount of interest capitalized was $12.7 million, $7.5 million and $8.7 million for the years ended December 31, 2014, 2013 and 2012, respectively.

The Partnership owns and leases certain gas treating assets that are used to remove impurities from natural gas before it is delivered into gathering systems and transmission pipelines to ensure it meets pipeline quality specifications. These assets are included within pipelines, processing and compression facilities within property, plant and equipment on the Partnership’s consolidated balance sheet. Revenues from these lease arrangements are recorded within transportation, processing and other fee revenues on the Partnership’s consolidated statement of operations. Future minimum rental income related to these lease arrangements is estimated to be as follows for each of the next five calendar years: 2015 - $3.2 million; 2016 - $1.0 million; 2017 - 2019 - none.

NOTE 8 – GOODWILL AND INTANGIBLE ASSETS

The Partnership evaluates goodwill for impairment annually, on December 31, for all reporting units, except SouthTX, which is evaluated on April 30. The Partnership completed the first step of the goodwill impairment test for its SouthTX reporting unit as of April 30, 2014 and determined there was no impairment. The Partnership completed a qualitative test for goodwill impairment on its Barnett, SouthOK and WestOK reporting units as of December 31, 2014 and determined there were no indications of impairment. Due to recent declines in commodity prices, the Partnership also performed a qualitative test for goodwill impairment on its SouthTX reporting unit as of December 31, 2014 and determined there was no impairment.

In 2013, the Partnership determined that a portion of goodwill recorded in connection with the Cardinal Acquisition was impaired. A qualitative assessment was performed on the Gas Treating reporting unit. The assessment indicated the potential for goodwill recorded on Gas Treating to be impaired due to lower forecasted cash flows as compared to original forecasts. Using a combination of discounted cash flow models and market multiples for similar businesses, the Partnership measured the amount of goodwill impairment on Gas Treating to be $43.9 million. The Partnership recorded a goodwill impairment loss of $43.9 million on its consolidated statements of operations for the year ended December 31, 2013.

The following table reflects the carrying amounts of goodwill by reporting unit at December 31, 2014 and 2013 (in thousands):

	December 31, 2014		December 31, 2013
Carrying amount of goodwill by reporting unit:
Barnett system	$	951	$	951
SouthOK system		170,381		170,381
SouthTX system		186,050		188,859
WestOK system		8,381		8,381
	$	365,763	$	368,572

The change in goodwill is related to a $2.8 million decrease in goodwill due to an adjustment of the fair value of assets acquired and liabilities assumed from the TEAK Acquisition (See Note 4). The fair values assigned to the assets acquired in the TEAK Acquisition were finalized during the second quarter 2014. The Partnership expects all goodwill recorded to be deductible for tax purposes.

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The Partnership has recorded intangible assets with finite lives in connection with certain consummated acquisitions. The following table reflects the components of intangible assets being amortized at December 31, 2014 and 2013 (in thousands):

	December 31, 2014			December 31, 2013			Estimated Useful Lives In Years
Gross carrying amount:
Customer contracts	$	3,419		$	3,419			2–10
Customer relationships		867,653			887,653			7–15
		871,072			891,072
Accumulated amortization:
Customer contracts		(1,281	)		(779	)
Customer relationships		(273,530	)		(194,022	)
		(274,811	)		(194,801	)
Net carrying amount:
Customer contracts		2,138			2,640
Customer relationships		594,123			693,631
Net carrying amount	$	596,261		$	696,271

The change in the gross carrying amount of finite-lived intangible assets is related to a $20.0 million adjustment of the fair value of the customer relationships acquired from the TEAK Acquisition (See Note 4). The fair values assigned to the assets acquired in the TEAK Acquisition were finalized during second quarter 2014.

The weighted-average amortization period for customer contracts and customer relationships, as of December 31, 2014, is 10.0 years and 11.5 years, respectively. The Partnership recorded amortization expense on intangible assets of $80.0 million, $68.9 million and $23.8 million for the years ended December 31, 2014, 2013 and 2012, respectively, on its consolidated statements of operations. Amortization expense related to intangible assets is estimated to be as follows for each of the next five calendar years: 2015 through 2016 - $74.0 million per year; 2017 - $68.0 million; 2018 through 2019 - $59.5 million per year.

NOTE 9 – OTHER ASSETS

The following is a summary of other assets (in thousands):

	December 31, 2014		December 31, 2013
Deferred finance costs, net of accumulated amortization of $29,116 and $22,034 at December 31, 2014 and 2013, respectively	$	37,334	$	41,094
Security deposits		2,238		5,367
Other long-term receivable		4,500		—
	$	44,072	$	46,461

Deferred finance costs are recorded at cost and amortized over the term of the respective debt agreement (see Note 14). The Partnership incurred $3.3 million, $22.8 million and $14.4 million deferred finance costs during the years ended December 31, 2014, 2013 and 2012, respectively, related to various financing activities (see Note 14).

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During the year ended December 31, 2013, the Partnership redeemed all of its outstanding $365.8 million 8.75% unsecured senior notes due June 15, 2018 (“8.75% Senior Notes”) (see Note 14) and recognized $5.3 million expense related to accelerated amortization of deferred financing costs, which is included in loss on early extinguishment of debt on the Partnership’s consolidated statement of operations. There was no accelerated amortization of deferred financing costs during the years ended December 31, 2014 and 2012. Amortization expense of deferred finance costs, excluding accelerated amortization expense, was $7.1 million, $7.0 million and $4.7 million for the years ended December 31, 2014, 2013 and 2012, respectively, which is recorded within interest expense on the Partnership’s consolidated statements of operations.

NOTE 10 – INCOME TAXES

As part of the Cardinal Acquisition (see Note 4), the Partnership acquired APL Arkoma, Inc., a taxable subsidiary. The components of the federal and state income tax expense (benefit) of the Partnership’s taxable subsidiary for the years ended December 31, 2014, 2013 and 2012 are summarized as follows (in thousands):

	Years Ended December 31,
	2014			2013			2012
Income tax expense (benefit):
Federal	$	(2,128	)	$	(2,024	)	$	158
State		(248	)		(236	)		18
Total income tax expense (benefit)	$	(2,376	)	$	(2,260	)	$	176

The components of net deferred tax liabilities as of December 31, 2014 and 2013 consist of the following (in thousands):

	December 31, 2014			December 31, 2013
Deferred tax assets:
Net operating loss tax carryforwards and alternative minimum tax credits	$	17,269		$	14,900
Deferred tax liabilities:
Excess of asset carrying value over tax basis		(48,183	)		(48,190	)
Net deferred tax liabilities	$	(30,914	)	$	(33,290	)

As of December 31, 2014, the Partnership had net operating loss carry forwards for federal income tax purposes of approximately $44.7 million, which expire at various dates from 2029 to 2034. Management of the General Partner believes it more likely than not that the deferred tax asset will be fully utilized.

NOTE 11 – DERIVATIVE INSTRUMENTS

The Partnership uses derivative instruments in connection with its commodity price risk management activities. The Partnership uses financial swaps and over-the-counter (“OTC”) purchased put options to hedge its forecasted natural gas, NGLs and condensate sales against the variability in expected future cash flows attributable to changes in market prices.

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Swap instruments are contractual agreements between counterparties to exchange obligations of money as the underlying natural gas, NGLs and condensate are sold. Under its swap agreements, the Partnership receives a fixed price and remits a floating price, which is based on certain indices for the relevant contract period, on an agreed upon quantity. The swap agreement sets a fixed price for the product being hedged and is (i) an asset if the floating price is lower than the fixed price or (ii) a liability if the floating price is higher than the fixed price.

OTC put options are contractual agreements whereby the purchaser pays a premium for the right, if the floating price is lower than the fixed price, to receive the difference between (i) a fixed, or strike, price and (ii) a floating price, which is based on certain indices for the relevant contract period, on an agreed upon quantity. The purchased put option instrument sets a floor price for commodity sales being hedged and is an asset.

The Partnership uses costless collars to reduce the cost of OTC purchased put options. A costless collar is a combination of an OTC purchased put option and an OTC sold call option, in which the premiums net to zero. OTC sold call options are contractual agreements whereby the seller receives a premium and grants the purchaser the right, if the floating price is higher than the strike price, to receive the difference between (i) a strike price and (ii) a floating price, which is based on certain indices for the relevant contract period, for an agreed upon quantity. The OTC sold call option sets a ceiling price for commodity sales being hedged and is a liability. The costless collar sets a range of prices, between the floor price of the OTC purchased put option and the ceiling price of the OTC sold call option, the Partnership will receive for the commodity sales being hedged.

The Partnership does not apply hedge accounting for derivatives and thus changes in the fair value of derivatives are recognized immediately within derivative gain (loss), net in its consolidated statements of operations. In previous years, the Partnership applied hedge accounting for derivatives and the effective portion of the gain (loss), due to the change in the fair value of the derivative instruments, was recognized in accumulated other comprehensive loss within equity on the Partnership’s consolidated balance sheets. The effective portion of the gain (loss) was reclassified to the Partnership’s consolidated statements of operations at the time the originally hedged physical transactions affected earnings, which occurred through the year ending December 31, 2012. The Partnership has reclassified all earnings out of accumulated other comprehensive income (loss), within equity on the Partnership’s consolidated balance sheet and there was no balance outstanding as of the years ended December 31, 2014 and 2013.

The Partnership enters into derivative contracts with various financial institutions, utilizing master contracts based upon the standards set by the International Swaps and Derivatives Association, Inc. These contracts allow for rights of setoff at the time of settlement of the derivatives. Due to the right of setoff, derivatives are recorded on the Partnership’s consolidated balance sheets as assets or liabilities at fair value on the basis of the net exposure to each counterparty. Potential credit risk adjustments are also analyzed based upon the net exposure to each counterparty. Premiums paid for purchased options, or received for sold call options, are recorded on the Partnership’s consolidated balance sheets as the initial value of the options. Changes in the fair value of the options are recognized within derivative gain (loss), net as unrealized gain (loss) on the Partnership’s consolidated statements of operations. Premiums are reclassified to realized gain (loss) within derivative gain (loss), net at the time the option expires or is exercised. The Partnership reflected net derivative assets on its consolidated balance sheet of $125.4 million at December 31, 2014, and net derivative liabilities of $9.1 million at December 31, 2013.

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The following tables summarize the Partnership’s gross fair values of its derivative instruments, presenting the impact of offsetting derivative assets and liabilities on the Partnership’s consolidated balance sheets for the periods indicated (in thousands):

Offsetting of Derivative Assets

	Gross Amounts of Recognized Assets		Gross Amounts Offset in the Consolidated Balance Sheets			Net Amounts of Assets Presented in the Consolidated Balance Sheets
As of December 31, 2014:
Current portion of derivative assets	$	88,007	$	—		$	88,007
Long-term portion of derivative assets		37,398		—			37,398
Total derivative assets, net	$	125,405	$	—		$	125,405
As of December 31, 2013:
Current portion of derivative assets	$	1,310	$	(1,136	)	$	174
Long-term portion of derivative assets		5,082		(2,812	)		2,270
Current portion of derivative liabilities		1,612		(1,612	)		—
Long-term portion of derivative liabilities		949		(949	)		—
Total derivative assets, net	$	8,953	$	(6,509	)	$	2,444

Offsetting of Derivative Liabilities

	Gross Amounts of Recognized Liabilities			Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Liabilities Presented in the Consolidated Balance Sheets
As of December 31, 2014:
Current portion of derivative assets	$	—		$	—	$	—
Long-term portion of derivative assets		—			—		—
Total derivative liabilities, net	$	—		$	—	$	—
As of December 31, 2013:
Current portion of derivative assets	$	(1,136	)	$	1,136	$	—
Long-term portion of derivative assets		(2,812	)		2,812		—
Current portion of derivative liabilities		(12,856	)		1,612		(11,244	)
Long-term portion of derivative liabilities		(1,269	)		949		(320	)
Total derivative liabilities, net	$	(18,073	)	$	6,509	$	(11,564	)

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The following table summarizes the Partnership’s commodity derivatives as of December 31, 2014, (fair value and volumes in thousands):

Production Period	Commodity	Volumes(1)		Average Fixed Price ($/Volume)		Fair Value(2) Asset/ (Liability)
Sold fixed price swaps
2015	Natural gas		27,010		4.18	$	30,945
2016	Natural gas		13,800		4.15		9,381
2017	Natural gas		6,600		4.11		2,137
2015	NGLs		71,442		1.22		43,094
2016	NGLs		34,650		1.03		16,822
2017	NGLs		10,080		1.04		4,777
2015	Crude oil		210		90.26		7,274
2016	Crude oil		30		90.00		848
Total fixed price swaps							115,278
Purchased put options
2015	NGLs		3,150		0.94		1,353
2015	Crude oil		270		89.18		8,774
Sold call options
2015	NGLs		1,260		1.28		—
Total options							10,127
Total derivatives						$	125,405

(1) NGL volumes are stated in gallons. Crude oil volumes are stated in barrels. Natural gas volumes are stated in MMBTUs.

(2) See Note 2 for discussion on fair value methodology.

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The following tables summarize the gross effect of all derivative instruments on the Partnership’s consolidated statements of operations for the periods indicated (in thousands):

	For the Years Ended December 31,
	2014			2013			2012
Derivatives previously designated as cash flow hedges
Loss reclassified from accumulated other comprehensive loss into natural gas and liquid sales	$	—		$	—		$	(4,390	)
Derivatives not designated as hedges
Gain (loss) recognized in derivative gain (loss), net:
Commodity contract—realized(1)	$	(9,960	)	$	(324	)	$	10,993
Commodity contract—unrealized(2)		141,024			(28,440	)		20,947
Derivative gain (loss), net	$	131,064		$	(28,764	)	$	31,940

(1) Realized gain (loss) represents the gain or loss incurred when the derivative contract expires and/or is cash settled.

(2) Unrealized gain (loss) represents the mark-to-market gain (loss) recognized on open derivative contracts, which have not yet settled.

NOTE 12 – FAIR VALUE OF FINANCIAL INSTRUMENTS

The Partnership uses a valuation framework based upon inputs that market participants use in pricing an asset or liability, which are classified into two categories: observable inputs and unobservable inputs. Observable inputs represent market data obtained from independent sources; whereas, unobservable inputs reflect the Partnership’s own market assumptions, which are used if observable inputs are not reasonably available without undue cost and effort. These two types of inputs are further prioritized into Levels 1, 2 and 3 (see Note 2 –“Fair Value of Financial Instruments”).

Derivative Instruments

At December 31, 2014, the valuations for all the Partnership’s derivative contracts are defined as Level 2 assets and liabilities within the same class of nature and risk, with the exception of the Partnership’s NGL fixed price swaps and NGL options, which are defined as Level 3 assets and liabilities within the same class of nature and risk.

The Partnership’s Level 2 commodity derivatives include natural gas and crude oil swaps and options, which are valued based upon observable market data related to the change in price of the underlying commodity. The value for these swaps and options are calculated by utilizing the New York Mercantile Exchange (“NYMEX”) quoted prices for futures and option contracts traded on NYMEX that coincide with the underlying commodity, expiration period, strike price (if applicable) and pricing formula utilized in the derivative instrument.

Valuations for the Partnership’s NGL options are based on forward price curves developed by financial institutions, and therefore are defined as Level 3 assets and liabilities. The NGL options are over-the-counter instruments not actively traded in an open market, thus the Partnership utilizes the valuations provided by the financial institutions that provide the NGL options for trade. The Partnership tests these valuations for reasonableness through the use of an internal valuation model.

Valuations for the Partnership’s NGL fixed price swaps are based on forward price curves provided by a third party, which the Partnership considers to be Level 3 inputs. The prices are adjusted based upon the relationship between the prices for the product/locations quoted by the third party and the

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underlying product/locations utilized for the swap contracts, as determined by a regression model of the historical settlement prices for the different product/locations. The regression model is recalculated on a quarterly basis. This adjustment is considered to be an unobservable Level 3 input. The NGL fixed price swaps are over-the-counter instruments, which are not actively traded in an open market. However, the prices for the underlying products and locations do have a direct correlation to the prices for the products and locations provided by the third party, which are based upon trading activity for the products and locations quoted. A change in the relationship between these prices would have a direct impact upon the unobservable adjustment utilized to calculate the fair value of the NGL fixed price swaps.

The following table represents the Partnership’s derivative assets and liabilities recorded at fair value as of December 31, 2014 and 2013 (in thousands):

	Level 1		Level 2			Level 3			Total
December 31, 2014
Assets
Commodity swaps	$	—	$	50,585		$	64,693		$	115,278
Commodity options		—		8,774			1,353			10,127
Total assets		—		59,359			66,046			125,405
Liabilities
Commodity swaps		—		—			—			—
Commodity options		—		—			—			—
Total liabilities		—		—			—			—
Total derivatives	$	—	$	59,359		$	66,046		$	125,405
December 31, 2013
Assets
Commodity swaps	$	—	$	2,994		$	1,412		$	4,406
Commodity options		—		4,337			210			4,547
Total assets		—		7,331			1,622			8,953
Liabilities
Commodity swaps		—		(4,695	)		(13,378	)		(18,073	)
Total liabilities		—		(4,695	)		(13,378	)		(18,073	)
Total derivatives	$	—	$	2,636		$	(11,756	)	$	(9,120	)

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The Partnership’s Level 3 fair value amount relates to its derivative contracts on NGL fixed price swaps and NGL options. The following table provides a summary of changes in fair value of the Partnership’s Level 3 derivative instruments for the years ended December 31, 2014 and 2013 (in thousands):

	NGL Fixed Price Swaps						NGL Put Options						NGL Call Options						Total
	Gallons			Amount			Gallons			Amount			Gallons			Amount			Amount
Balance – January 1, 2013		87,066		$	16,814			38,556		$	6,269			—		$	—		$	23,083
New contracts(1)		104,328			—			7,560			816			—			—			816
Cash settlements from unrealized (gain) loss(2)(3)		(61,236	)		(11,496	)		(39,816	)		8,545			—			—			(2,951	)
Net change in unrealized loss(2)		—			(17,284	)		—			(2,367	)		—			—			(19,651	)
Deferred option premium recognition(3)		—			—			—			(13,053	)		—			—			(13,053	)
Balance – December 31, 2013		130,158		$	(11,966	)		6,300		$	210			—		$	—		$	(11,756	)
New contracts(1)		70,560			—			5,040			200			5,040			(200	)		—
Cash settlements from unrealized (gain) loss(2)(3)		(84,546	)		3,406			(8,190	)		100			(3,780	)		(121	)		3,385
Net change in unrealized gain (loss)(2)		—			73,253			—			1,448			—			200			74,901
Deferred option premium recognition(3)		—			—			—			(605	)		—			121			(484	)
Balance – December 31, 2014		116,172		$	64,693			3,150		$	1,353			1,260		$	—		$	66,046

(1) Swaps are entered into with no value on the date of trade. Options include premiums paid, which are included in the value of the derivatives on the date of trade.

(2) Included within derivative gain (loss), net on the Partnership’s consolidated statements of operations.

(3) Includes option premium cost reclassified from unrealized gain (loss) to realized gain (loss) at time of option expiration.

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The following table provides a summary of the unobservable inputs used in the fair value measurement of the Partnership’s NGL fixed price swaps at December 31, 2014 and 2013 (in thousands):

	Gallons		Third Party Quotes(1)			Adjustments(2)			Total Amount
As of December 31, 2014
Propane swaps		101,556	$	50,201		$	—		$	50,201
Natural gasoline swaps		14,616		14,859			(367	)		14,492
Total NGL swaps – December 31, 2014		116,172	$	65,060		$	(367	)	$	64,693
As of December 31, 2013
Propane swaps		100,296	$	(10,260	)	$	—		$	(10,260	)
Isobutane swaps		6,300		(2,342	)		955			(1,387	)
Normal butane swaps		7,560		40			322			362
Natural gasoline swaps		16,002		132			(813	)		(681	)
Total NGL swaps – December 31, 2013		130,158	$	(12,430	)	$	464		$	(11,966	)

(1) Based upon the difference between the quoted market price provided by the third party and the fixed price of the swap.

(2) Product and location basis differentials calculated through the use of a regression model, which compares the difference between the settlement prices for the products and locations quoted by the third party and the settlement prices for the actual products and locations underlying the derivatives, using a three year historical period.

The following table provides a summary of the regression coefficient utilized in the calculation of the unobservable inputs for the Level 3 fair value measurements for the NGL fixed price swaps for the periods indicated (in thousands):

	Level 3 NGL Swap Fair			Adjustment based upon Regression Coefficient
	Value Adjustments			Lower 95%		Upper 95%		Average
As of December 31, 2014:
Natural gasoline	$	(367	)		0.9714		0.9748		0.9731
Total Level 3 adjustments – December 31, 2014	$	(367	)
As of December 31, 2013:
Isobutane	$	955			1.1184		1.1284		1.1234
Normal butane		322			1.0341		1.0386		1.0364
Natural gasoline		(813	)		0.9727		0.9751		0.9739
Total Level 3 adjustments – December 31, 2013	$	464

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NGL Linefill

The Partnership had $14.6 million and $14.5 million of NGL linefill at December 31, 2014 and 2013, respectively, which was included within prepaid expenses and other on its consolidated balance sheets. The NGL linefill represents amounts receivable for NGLs delivered to counterparties, for which the counterparty will pay at a designated later period at a price determined by the then market price. The Partnership’s NGL linefill held by some counterparties will be settled at various periods in the future and is defined as a Level 3 asset, which is valued at fair value using the same forward price curve utilized to value the Partnership’s NGL fixed price swaps. The product/location adjustment based upon the multiple regression analysis, which was included in the value of the linefill, was an increase of $0.1 million and a decrease of $0.4 million as of December 31, 2014 and 2013, respectively. The Partnership’s NGL linefill held by other counterparties is adjusted on a monthly basis according to the volumes delivered to the counterparties each period and is valued on a FIFO basis. During the year ended December 31, 2014, the contracts related to this linefill on the WestTX system were revised and the settlement and valuation was converted from a FIFO method to a fair value method.

The following table provides a summary of changes in fair value of the Partnership’s NGL linefill for the years ended December 31, 2014 and 2013 (in thousands):

	Linefill Valued at Market						Linefill Valued on FIFO						Total NGL Linefill
	Gallons			Amount			Gallons			Amount			Gallons			Amount
Balance – January 1, 2013		9,148		$	7,783			—		$	—			9,148		$	7,783
Deliveries into NGL linefill		—			—			80,758			60,565			80,758			60,565
NGL linefill sales		(3,360	)		(2,795	)		(71,433	)		(52,155	)		(74,793	)		(54,950	)
Net change in NGL linefill valuation(1)		—			(249	)		—			—			—			(249	)
Acquired NGL linefill(2)		—			—			2,213			1,368			2,213			1,368
Balance – December 31, 2013		5,788		$	4,739			11,538		$	9,778			17,326		$	14,517
Deliveries into NGL linefill		4,385			2,919			59,273			38,451			63,658			41,370
NGL linefill sales		(4,629	)		(3,917	)		(49,335	)		(31,470	)		(53,964	)		(35,387	)
Adjustments for linefill contract revision		11,982			9,846			(11,982	)		(9,846	)		—			—
Net change in NGL linefill valuation(1)		—			(5,888	)		—			—			—			(5,888	)
Balance – December 31, 2014		17,526		$	7,699			9,494		$	6,913			27,020		$	14,612

(1) Included within natural gas and liquid sales on the Partnership’s consolidated statements of operations.

(2) NGL linefill acquired as part of the TEAK and Cardinal Acquisitions (see Note 4).

Contingent Consideration

In February 2012, the Partnership acquired a gas gathering system and related assets for an initial net purchase price of $19.0 million. The Partnership agreed to pay up to an additional $12.0 million in contingent payments, payable in two equal amounts, if certain volumes are achieved on the acquired gathering system within a specified time period. Sufficient volumes were achieved in December 2012 and the Partnership paid the first contingent payment of $6.0 million in January 2013. As of December 31, 2014, the fair value of the remaining contingent payment resulted in a $6.0 million long term liability, which was recorded within other long term liabilities on the Partnership’s consolidated balance sheets. The range of the undiscounted amount the Partnership could pay related to the remaining contingent payment is between $0.0 and $6.0 million.

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Other Financial Instruments

The estimated fair value of the Partnership’s other financial instruments has been determined based upon its assessment of available market information and valuation methodologies. However, these estimates may not necessarily be indicative of the amounts the Partnership could realize upon the sale or refinancing of such financial instruments.

The Partnership’s current assets and liabilities on its consolidated balance sheets, other than the derivatives, NGL linefill and contingent consideration discussed above, are considered to be financial instruments for which the estimated fair values of these instruments approximate their carrying amounts due to their short-term nature and thus are categorized as Level 1 values. The carrying value of outstanding borrowings under the revolving credit facility, which bear interest at a variable interest rate, approximates their estimated fair value and thus is categorized as a Level 1 value. The estimated fair value of the Partnership’s Senior Notes (see Note 14) is based upon the market approach and calculated using the yield of the Senior Notes as provided by financial institutions and thus is categorized as a Level 3 value. The estimated fair values of the Partnership’s total debt at December 31, 2014 and 2013, which consists principally of borrowings under the revolving credit facility and the Senior Notes, were $1,933.2 million and $1,663.6 million, respectively, compared with the carrying amounts of $1,939.1 million and $1,707.3 million, respectively.

Acquisitions

On May 7, 2013, the Partnership completed the TEAK Acquisition (see Note 4). On December 20, 2012, the Partnership completed the Cardinal Acquisitions (see Note 4). The fair value measurements of assets acquired and liabilities assumed are based on inputs that are not observable in the market and therefore represent Level 3 inputs. These inputs require significant judgments and estimates at the time of the valuation. The fair values assigned to the assets acquired and liabilities assumed in the TEAK Acquisition were finalized during the second quarter 2014. The fair values assigned to the assets acquired and liabilities assumed in the Cardinal Acquisition were finalized during 2013.

NOTE 13 – ACCRUED LIABILITIES

The following is a summary of accrued liabilities (in thousands):

	December 31, 2014		December 31, 2013
Accrued capital expenditures	$	13,233	$	17,898
Acquisition-related liabilities		4,779		8,933
Accrued ad valorem and production taxes		4,298		3,551
Distributions payable		2,609		—
Merger-related liabilities		6,056		—
Unconditional purchase obligations		6,521		—
Other		12,233		17,067
	$	49,729	$	47,449

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NOTE 14 – DEBT

Total debt consists of the following (in thousands):

	December 31, 2014			December 31, 2013
Revolving credit facility	$	385,000		$	152,000
6.625% Senior notes – due 2020		503,881			504,556
5.875% Senior notes – due 2023		650,000			650,000
4.750% Senior notes – due 2021		400,000			400,000
Capital lease obligations		229			754
Total debt		1,939,110			1,707,310
Less current maturities		(224	)		(524	)
Total long term debt	$	1,938,886		$	1,706,786

The aggregate amount of the Partnership’s debt maturities is as follows (in thousands):

Years Ended December 31:
2015	$	224
2016		5
2017		—
2018		—
2019		385,000
Thereafter		1,550,000
Total principal maturities		1,935,229
Unamortized premium		3,881
Total debt	$	1,939,110

Cash payments for interest related to debt, net of capitalized interest, were $85.9 million, $66.3 million and $28.3 million for the years ended December 31, 2014, 2013 and 2012, respectively.

Revolving Credit Facility

At December 31, 2014, the Partnership had an $800.0 million senior secured revolving credit facility with a syndicate of banks that matures in August 2019. Borrowings under the revolving credit facility bear interest, at the Partnership’s option, at either (1) the higher of (a) the prime rate, (b) the federal funds rate plus 0.50% and (c) the LIBOR rate plus 1.0%, or (2) the LIBOR rate for the applicable period (each plus the applicable margin). The weighted average interest rate for borrowings on the revolving credit facility, at December 31, 2014, was 2.7%. Up to $50.0 million of the revolving credit facility may be utilized for letters of credit, of which $4.2 million was outstanding at December 31, 2014. These outstanding letters of credit amounts were not reflected as borrowings on the Partnership’s consolidated balance sheets. At December 31, 2014, the Partnership had $410.8 million of remaining committed capacity under its revolving credit facility.

Borrowings under the revolving credit facility are secured by (i) a lien on and security interest in all the Partnership’s property and that of its subsidiaries, except for the assets owned by Atlas Pipeline Mid-Continent WestOk, LLC (“WestOK LLC”) and Atlas Pipeline Mid-Continent WestTex, LLC (“WestTX LLC”), entities in which the Partnership has 95% interests, and Centrahoma, in which the

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Partnership has a 60% interest; and their respective subsidiaries; and (ii) by the guaranty of each of the Partnership’s consolidated subsidiaries other than the joint venture companies. The revolving credit facility contains customary covenants, including requirements that the Partnership maintain certain financial thresholds and restrictions on the Partnership’s ability to (1) incur additional indebtedness, (2) make certain acquisitions, loans or investments, (3) make distribution payments to its unitholders if an event of default exists, or (4) enter into a merger or sale of assets, including the sale or transfer of interests in its subsidiaries, without approval of the lenders. The Partnership is unable to borrow under its revolving credit facility to pay distributions of available cash to unitholders because such borrowings would not constitute “working capital borrowings” pursuant to its partnership agreement.

The events that constitute an event of default for the revolving credit facility are also customary for loans of this size, including payment defaults, breaches of representations or covenants contained in the credit agreement, adverse judgments against the Partnership in excess of a specified amount, and a change of control of the General Partner.

On August 28, 2014, the Partnership entered into a Second Amended and Restated Credit Agreement (the “Revised Credit Agreement”) which, among other changes:

• extended the maturity date to August 28, 2019;

• increased the revolving credit commitment from $600 million to $800 million and the incremental revolving credit amount from $200 million to $250 million;

• reduced by 0.25% the applicable margin used to determine interest rates for LIBOR Rate Loans, as defined in the Revised Credit Agreement, and for Base Rate Loans, as defined in the Revised Credit Agreement, depending on the Partnership’s Consolidated Funded Debt Ratio, as defined in the Revised Credit Agreement;

• allows the Partnership to request incremental term loans, provided the sum of any revolving credit commitments and incremental term loans may not exceed $1.05 billion; and

• changed the per annum interest rate on borrowings to (i) the higher of (a) the prime rate, (b) the federal funds rate plus 0.50% and (c) the LIBOR rate plus 1.0%, or (ii) the LIBOR rate for the applicable period, in each case plus the applicable margin.

As of December 31, 2014, the Partnership was in compliance with all covenants under the credit facility.

Senior Notes

At December 31, 2014, the Partnership had $500.0 million principal outstanding of the 6.625% Senior Notes, $650.0 million principal outstanding of the 5.875% unsecured senior notes due August 1, 2023 (“5.875% Senior Notes”), and $400.0 million of the 4.75% Senior Notes (with the 6.625% Senior Notes and 5.875% Senior Notes, the “Senior Notes”).

On January 15, 2015, TRP announced cash tender offers to redeem any and all of the outstanding $500.0 million aggregate principal amount of the 6.625% Senior Notes; $400.0 million aggregate principal amount of the 4.75% Senior Notes; and $650.0 million aggregate principal amount of the 5.875% Senior Notes. TRP made the cash tender offers in connection with, and conditioned upon, the consummation of the Merger (see Note 3). The Merger, however, is not conditioned on the

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consummation of the tender offers. On February 2, 2015, TRP announced as of January 29, 2015, it had received tenders pursuant to its previously announced cash tender offers on January 15, 2015 from holders representing:

• less than a majority of the total outstanding $500.0 million of the 6.625% Senior Notes;

• approximately 98.3% of the total outstanding $400.0 million of the 4.75% Senior Notes; and

• approximately 91.0% of the total outstanding $650.0 million of the 5.875% Senior Notes.

Also on February 2, 2015, TRP announced a change of control cash tender offer for any and all of the outstanding $500.0 million of the 6.625% Senior Notes. TRP made the change of control cash tender offer in connection with, and conditioned upon, the consummation of the Merger. The Merger, however, is not conditioned on the consummation of the change in control cash tender offer. The change in control cash tender offer was made independently of TRP’s January 15, 2015 cash tender offers.

The Senior Notes are subject to repurchase by the Partnership at a price equal to 101% of their principal amount, plus accrued and unpaid interest, upon a change of control or upon certain asset sales if the Partnership does not reinvest the net proceeds within 360 days. The Senior Notes are junior in right of payment to the Partnership’s secured debt, including the Partnership’s obligations under its revolving credit facility.

Indentures governing the Senior Notes contain covenants, including limitations of the Partnership’s ability to: incur certain liens; engage in sale/leaseback transactions; incur additional indebtedness; declare or pay distributions if an event of default has occurred; redeem, repurchase or retire equity interests or subordinated indebtedness; make certain investments; or merge, consolidate or sell substantially all its assets, without consent. The Partnership is in compliance with these covenants as of December 31, 2014.

6.625% Senior Notes

The 6.625% Senior Notes are presented combined with a net $3.9 million unamortized premium as of December 31, 2014. Interest on the 6.625% Senior Notes is payable semi-annually in arrears on April 1 and October 1. The 6.625% Senior Notes are due on October 1, 2020 and redeemable at any time after October 1, 2016, at certain redemption prices, together with accrued and unpaid interest to the date of redemption.

On September 28, 2012, the Partnership issued $325.0 million of the 6.625% Senior Notes in a private placement transaction, at par. The Partnership received net proceeds of $318.9 million after underwriting commissions and other transaction costs and utilized the proceeds to reduce the outstanding balance on its revolving credit facility.

On December 20, 2012, the Partnership issued $175.0 million of the 6.625% Senior Notes in a private placement transaction. The 6.625% Senior Notes were issued at a premium of 103.0% of the principal amount for a yield of 6.0%. The Partnership received net proceeds of $176.1 million after underwriting commissions and other transaction costs and utilized the proceeds to partially finance the Cardinal Acquisition (see Note 4). Of the $176.1 million net proceeds, $176.5 million was received during the year ended December 31, 2012, while additional expenses of $0.4 million were incurred during the year ended December 31, 2013.

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5.875% Senior Notes

On February 11, 2013, the Partnership issued $650.0 million of the 5.875% Senior Notes in a private placement transaction. The 5.875% Senior Notes were issued at par. The Partnership received net proceeds of $637.3 million after underwriting commissions and other transactions costs and utilized the proceeds to redeem the 8.75% Senior Notes and repay a portion of the outstanding indebtedness under the credit facility. Interest on the 5.875% Senior Notes is payable semi-annually in arrears on February 1 and August 1. The 5.875% Senior Notes are due on August 1, 2023, and redeemable any time after February 1, 2018, at certain redemption prices, together with accrued and unpaid interest to the date of redemption.

4.75% Senior Notes

On May 10, 2013, the Partnership issued $400.0 million of the 4.75% Senior Notes in a private placement transaction. The 4.75% Senior Notes were issued at par. The Partnership received net proceeds of $391.2 million after underwriting commissions and other transactions costs and utilized the proceeds to repay a portion of the outstanding indebtedness under the revolving credit agreement as part of the TEAK Acquisition (see Note 4). Interest on the 4.75% Senior Notes is payable semi-annually in arrears on May 15 and November 15. The 4.75% Senior Notes are due on November 15, 2021 and are redeemable any time after March 15, 2016, at certain redemption prices, together with accrued and unpaid interest to the date of redemption.

8.75% Senior Notes

On January 28, 2013, the Partnership commenced a cash tender offer for any and all of its outstanding 8.75% Senior Notes and a solicitation of consents to eliminate most of the restrictive covenants and certain of the events of default contained in the indenture governing the 8.75% Senior Notes (“8.75% Senior Notes Indenture”). Approximately $268.4 million aggregate principal amount of the 8.75% Senior Notes were validly tendered as of the expiration date of the consent solicitation. In February 2013, the Partnership accepted for purchase all 8.75% Senior Notes validly tendered as of the expiration of the consent solicitation and paid $291.4 million to redeem the $268.4 million principal plus $11.2 million make-whole premium, $3.7 million accrued interest and $8.0 million consent payment. The Partnership entered into a supplemental indenture amending and supplementing the 8.75% Senior Notes Indenture.

On March 12, 2013, the Partnership paid $105.6 million to redeem the remaining $97.3 million 8.75% Senior Notes not purchased in connection with the January 28, 2013 tender offer, plus a $6.3 million make-whole premium and $2.0 million in accrued interest. The Partnership funded the redemption with a portion of the net proceeds from the issuance of the 5.875% Senior Notes. During the year ended December 31, 2013, the Partnership recorded a loss of $26.6 million within loss on early extinguishment of debt on the Partnership’s consolidated statements of operations, related to the redemption of the 8.75% Senior Notes. The loss includes $17.5 million premiums paid; $8.0 million consent payment; $5.3 million write off of deferred financing costs, offset by $4.2 million recognition of unamortized premium.

NOTE 15 – COMMITMENTS AND CONTINGENCIES

The Partnership has noncancelable operating leases for equipment and office space that expire at various dates. Certain operating leases provide the Partnership with the option to renew for additional periods. Where operating leases contain escalation clauses, rent abatements, and/or concessions, the Partnership applies them in the determination of straight-line rent expense over the lease term. Leasehold improvements are amortized over the shorter of the lease term or asset life, which may include renewal periods where the renewal is reasonably assured, and is included in the determination of straight-line rent

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expense. Total rental expense for the years ended December 31, 2014, 2013 and 2012 was $15.2 million, $11.3 million and $5.5 million, respectively. The aggregate amount of remaining future minimum annual lease payments as of December 31, 2014 is as follows (in thousands):

Years Ended December 31:
2015	$	12,621
2016		8,610
2017		5,126
2018		4,469
2019		644
Thereafter		322
	$	31,792

The Partnership has certain long-term unconditional purchase obligations and commitments, consisting primarily of transportation contracts. These agreements provide for transportation services to be used in the ordinary course of the Partnership’s operations. Transportation fees paid related to these contracts, including minimum shipment payments, were $28.3 million, $34.8 million and $10.5 million for the years ended December 31, 2014, 2013 and 2012, respectively. The unrecorded future fixed and determinable portion of the obligations as of December 31, 2014 was as follows: 2015 - $20.7 million; 2016 to 2017 - $23.9 million per year; 2018 - $21.8 million; and 2019 - $16.9 million.

The Partnership had committed approximately $179.1 million for the purchase of property, plant and equipment at December 31, 2014.

The Partnership is involved in class action lawsuits arising from events related to the Merger (see Part I. – Item 3. Legal Proceedings”). At this time, the Partnership cannot reasonably estimate the range of possible loss as a result of the lawsuits.

The Partnership is also party to various routine legal proceedings arising out of the ordinary course of its business. Management of the Partnership believes the ultimate resolution of these actions, individually or in the aggregate, will not have a material adverse effect on its financial condition or results of operations.

NOTE 16 – CONCENTRATIONS OF RISK

The Partnership sells natural gas, NGLs and condensate under contract to various purchasers in the normal course of business. For the year ended December 31, 2014, the Partnership had three customers that individually accounted for approximately 26%, 13% and 11%, respectively, of the Partnership’s consolidated total third party revenues, excluding the impact of all financial derivative activity. For the year ended December 31, 2013, the Partnership had three customers that individually accounted for approximately 29%, 17% and 14%, respectively, of the Partnership’s consolidated total third party revenues, excluding the impact of all financial derivative activity. For the year ended December 31, 2012, the Partnership had two customers that individually accounted for approximately 48% and 15%, respectively, of the Partnership’s consolidated total third party revenues, excluding the impact of all financial derivative activity. Additionally, the Partnership had two customers that individually accounted for approximately 15% and 10%, respectively, of the Partnership’s consolidated accounts receivable at December 31, 2014, and three customers that individually accounted for approximately 23%, 20% and 10%, respectively, of the Partnership’s consolidated accounts receivable at December 31, 2013.

The Partnership has certain producers that supply a majority of the natural gas to its gathering systems and processing facilities. A reduction in the volume of natural gas that any one of these producers supply to the Partnership could adversely affect its operating results unless comparable volume could be obtained from other producers in the surrounding region.

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The Partnership places its temporary cash investments in high quality short-term money market instruments and deposits with high quality financial institutions. At December 31, 2014, the Partnership and its subsidiaries had $8.5 million in deposits at banks, of which $7.8 million was over the insurance limits of the Federal Deposit Insurance Corporation and the Securities Investor Protection Corporation. No losses have been experienced on such investments.

NOTE 17 – BENEFIT PLANS

Share-based payments are made to employees and non-employees in the form of phantom units or unit options. A phantom unit entitles a grantee to receive a common limited partner unit upon vesting of the phantom unit. The compensation committee appointed by the General Partner’s managing board (the “Compensation Committee”) determines the vesting period for phantom units.

A unit option entitles a grantee to purchase a common limited partner unit upon payment of the exercise price for the option after completion of vesting of the unit option. The exercise price of the unit option is equal to the fair market value of the common unit on the date of grant of the option. The Compensation Committee determines how the exercise price may be paid by the grantee as well as the vesting and exercise period for unit options.

In tandem with phantom unit grants, participants may be granted a distribution equivalent right (“DER”), which is the right to receive cash per phantom unit in an amount equal to and at the same time as the cash distributions the Partnership makes on a common unit during the period the phantom unit is outstanding.

Phantom units and unit options granted to employees, which are not to be cash settled, are recognized within equity in the financial statements based on their fair values on the date of the grant. Phantom units and unit options granted to non-employees that have a cash settlement option are recognized within liabilities in the financial statements based upon their current fair market value.

Long-Term Incentive Plans

The Partnership has a 2004 Long-Term Incentive Plan (“2004 LTIP”) and a 2010 Long-Term Incentive Plan (“2010 LTIP” and collectively with the 2004 LTIP, the “LTIPs”) in which officers, employees, non-employee managing board members of the General Partner, employees of the General Partner’s affiliates and consultants are eligible to participate. The LTIPs are administered by the Compensation Committee. Under the LTIPs, the Compensation Committee may make awards of either phantom units or unit options for an aggregate of 3,435,000 common units. At December 31, 2014, the Partnership had 1,684,289 phantom units outstanding under the Partnership’s LTIPs, with 139,218 phantom units and unit options available for grant. The Partnership generally issues new common units for phantom units and unit options that have vested and have been exercised.

Partnership Phantom Units

Phantom units granted to employees under the LTIPs generally have vesting periods of four years. However, in February 2014, the Partnership granted 227,000 phantom units with a vesting period of three years. Phantom units awarded to non-employee managing board members will vest over a four year period. Awards to non-employee members of the board automatically vest upon a change of control, as defined in the LTIPs. At December 31, 2014, there were 614,415 phantom units outstanding under the LTIPs that will vest within twelve months.

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The Partnership is authorized to purchase common units from employees to cover employee tax obligations when phantom units have vested. During the years ended December 31, 2014 and 2012, the Partnership purchased and retired 66,321 and 24,052 common units, respectively, for a cost of $2.2 million and $0.7 million, respectively. The purchased and retired units were recorded as reductions of equity on the Partnership’s consolidated balance sheets. There were no common units purchased and retired during the year ended December 31, 2013.

All phantom units outstanding under the LTIPs at December 31, 2014 include DERs granted to the participants by the Compensation Committee. The amounts paid with respect to LTIP DERs were $4.3 million, $3.1 million and $2.0 million during the years ended December 31, 2014, 2013 and 2012, respectively. These amounts were recorded as reductions of equity on the Partnership’s consolidated balance sheets.

The following table sets forth the Partnership’s LTIPs phantom unit activity for the periods indicated:

	Years Ended December 31,
	2014					2013					2012
	Number of Units			Fair Value(1)		Number of Units			Fair Value(1)		Number of Units			Fair Value(1)
Outstanding, beginning of period		1,446,553		$	36.32		1,053,242		$	33.21		394,489		$	21.63
Granted		738,727			33.03		744,997			38.96		907,637			34.94
Forfeited		(37,075	)		37.09		(61,550	)		36.11		(67,675	)		29.83
Vested and issued(2)(3)		(463,916	)		34.71		(290,136	)		31.88		(181,209	)		17.88
Outstanding, end of period(4)(5)		1,684,289		$	35.30		1,446,553		$	36.32		1,053,242		$	33.21
Non-cash compensation expense recognized (in thousands)				$	25,116				$	19,344				$	11,635

(1) Fair value based upon weighted average grant date.

(2) The intrinsic values for phantom unit awards vested and issued during the years ended December 31, 2014, 2013 and 2012 were $15.4 million, $10.7 million and $5.5 million, respectively.

(3) There were 4,684, 1,677 and 792 vested phantom units, which were settled for $155 thousand, $58 thousand and $26 thousand cash during the years ended December 31, 2014, 2013 and 2012, respectively.

(4) The aggregate intrinsic value for phantom unit awards outstanding at December 31, 2014 and 2013 was $45.9 million and $50.7 million, respectively.

(5) There were 25,778 and 22,539 outstanding phantom unit awards at December 31, 2014 and 2013, respectively, which were classified as liabilities due to a cash option available on the related phantom unit awards.

At December 31, 2014, the Partnership had approximately $27.9 million of unrecognized compensation expense related to unvested phantom units outstanding under the LTIPs based upon the fair value of the awards, which is expected to be recognized over a weighted average period of 1.9 years.

Partnership Unit Options

The Partnership had no unit options outstanding at December 31, 2014, and there were no exercises of unit options during the years ended December 31, 2014, 2013 and 2012.

NOTE 18 – RELATED PARTY TRANSACTIONS

The Partnership does not directly employ any persons to manage or operate its business. These functions are provided by the General Partner and employees of ATLS. The General Partner does not receive a management fee in connection with its management of the Partnership apart from its interest as

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general partner and its right to receive incentive distributions. The Partnership reimburses the General Partner and its affiliates for compensation and benefits related to its employees who perform services for the Partnership based upon an estimate of the time spent by such persons on activities for the Partnership. Other indirect costs, such as rent for offices, are allocated to the Partnership by ATLS based on the number of its employees who devote their time to activities on the Partnership’s behalf.

The partnership agreement provides that the General Partner will determine the costs and expenses allocable to the Partnership in any reasonable manner determined by the General Partner at its sole discretion. The Partnership reimbursed the General Partner and its affiliates $5.1 million, $5.0 million and $3.8 million during years ended December 31, 2014, 2013 and 2012, respectively, for compensation and benefits related to its employees. There were no reimbursements for direct expenses incurred by the General Partner and its affiliates for the years ended December 31, 2014, 2013 and 2012. The General Partner believes the method utilized in allocating costs to the Partnership is reasonable.

The Partnership compresses and gathers gas for ARP on its gathering systems located in Tennessee. ARP’s general partner is wholly-owned by ATLS, and two members of the General Partner’s managing board are members of ARP’s board of directors. The Partnership entered into an agreement to provide these services, which extends for the life of ARP’s leases, in February 2008. The Partnership charged ARP approximately $0.3 million, $0.3 million and $0.4 million in compression and gathering fees for the years ended December 31, 2014, 2013 and 2012, respectively.

The Partnership agreed to provide design, procurement and construction management services for ARP with respect to a pipeline located in Lycoming County, Pennsylvania (the “Lycoming Pipeline”). The Partnership was reimbursed approximately $1.8 million by ARP for these services during the year ended December 31, 2013.

On February 27, 2015, the Partnership agreed to transfer 100% of the Partnership’s interest in its Tennessee gas gathering assets to ARP, for $1.0 million plus working capital adjustments, concurrent with the closing of the Merger on February 27, 2015.

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NOTE 19 – SEGMENT INFORMATION

As a result of the sale of the Partnership’s subsidiaries that owned an interest in WTLPG on May 14, 2014 (see Note 5), the Partnership assessed its reportable segments and realigned its reportable segments into two new segments: Oklahoma and Texas. These reportable segments reflect the way the Partnership will manage its operations going forward. The Partnership has adjusted its segment presentation from the amounts previously presented to reflect the realignment of the segments.

The Oklahoma segment consists of the SouthOK and WestOK operations, which are comprised of natural gas gathering, processing and treating assets servicing drilling activity in the Anadarko, Ardmore and Arkoma Basins and which were formerly included within the previous Gathering and Processing segment. Oklahoma revenues are primarily derived from the sale of residue gas and NGLs and the gathering, processing and treating of natural gas within the state of Oklahoma.

The Texas segment consists of (1) the SouthTX and WestTX operations, which are comprised of natural gas gathering and processing assets servicing drilling activity in the Permian Basin and the Eagle Ford Shale play in southern Texas; and (2) the natural gas gathering assets located in the Barnett Shale play in Texas. These assets were formerly included within the previous Gathering and Processing segment. Texas revenues are primarily derived from the sale of residue gas and NGLs and the gathering and processing of natural gas within the state of Texas.

The previous Transportation and Treating segment, which consisted of (1) the gas treating operations, which own contract gas treating facilities located in various shale plays; and (2) the former subsidiaries’ interest in WTLPG, has been eliminated and the financial information is now included within Corporate and Other. On February 27, 2015, the Partnership agreed to transfer 100% of the Partnership’s interest in natural gas gathering assets located in the Appalachian Basin in Tennessee to the Partnership’s affiliate, ARP (see Note 3). The Tennessee gathering assets were formerly included in the previous Gathering and Processing Segment, but are now included within Corporate and Other.

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The following summarizes the Partnership’s reportable segment data for the periods indicated (in thousands):

	Oklahoma			Texas			Corporate and Other		Consolidated
Year Ended December 31, 2014:
Revenue:
Revenues – third party(1)	$	1,722,810		$	1,115,545		$	136,479	$	2,974,834
Revenues – affiliates		—			—			286		286
Total revenues		1,722,810			1,115,545			136,765		2,975,120
Costs and Expenses:
Natural gas and liquids cost of sales		1,383,137			908,777			—		2,291,914
Operating expenses		62,758			48,700			2,148		113,606
General and administrative(1)		—			—			73,943		73,943
Other expenses(2)		—			—			6,073		6,073
Depreciation and amortization		102,614			95,203			4,726		202,543
Interest expense(1)		—			—			93,147		93,147
Total costs and expenses		1,548,509			1,052,680			180,037		2,781,226
Equity income (loss) in joint ventures		—			(16,619	)		2,612		(14,007	)
Gain (loss) on asset disposition		(448	)		—			47,829		47,381
Income before tax		173,853			46,246			7,169		227,268
Income tax benefit		(2,376	)		—			—		(2,376	)
Net income	$	176,229		$	46,246		$	7,169	$	229,644

	Oklahoma			Texas			Corporate and Other			Consolidated
Year Ended December 31, 2013:
Revenue:
Revenues – third party(1)	$	1,385,342		$	743,412		$	(22,208	)	$	2,106,546
Revenues – affiliates		—			—			303			303
Total revenues		1,385,342			743,412			(21,905	)		2,106,849
Costs and Expenses:
Natural gas and liquids cost of sales		1,087,245			603,137			—			1,690,382
Operating expenses		58,848			33,716			1,963			94,527
General and administrative(1)		—			—			60,856			60,856
Other expenses(2)		—			—			20,005			20,005
Depreciation and amortization		98,240			65,797			4,580			168,617
Interest expense(1)		—			—			89,637			89,637
Total costs and expenses		1,244,333			702,650			177,041			2,124,024
Equity income (loss) in joint ventures		—			(9,724	)		4,988			(4,736	)
Loss on asset disposition		(1,519	)		—			—			(1,519	)
Goodwill impairment loss		—			—			(43,866	)		(43,866	)
Loss on early extinguishment of debt		—			—			(26,601	)		(26,601	)
Income (loss) before tax		139,490			31,038			(264,425	)		(93,897	)
Income tax benefit		(2,260	)		—			—			(2,260	)
Net income (loss)	$	141,750		$	31,038		$	(264,425	)	$	(91,637	)

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	Oklahoma		Texas			Corporate and Other			Consolidated
Year Ended December 31, 2012:
Revenue:
Revenues – third party(1)	$	757,909	$	459,103		$	28,573		$	1,245,585
Revenues – affiliates		—		—			435			435
Total revenues		757,909		459,103			29,008			1,246,020
Costs and Expenses:
Natural gas and liquids cost of sales		551,420		376,526			—			927,946
Operating expenses		39,627		21,712			759			62,098
General and administrative(1)		—		—			47,206			47,206
Other expenses(2)		5		(308	)		15,372			15,069
Depreciation and amortization		56,154		33,284			591			90,029
Interest expense(1)		—		—			41,760			41,760
Total costs and expenses		647,206		431,214			105,688			1,184,108
Equity income in joint ventures		—		—			6,323			6,323
Income (loss) before tax		110,703		27,889			(70,357	)		68,235
Income tax expense		176		—			—			176
Net income (loss)	$	110,527	$	27,889		$	(70,357	)	$	68,059

(1) Derivative contracts are carried at the corporate level, and interest and general and administrative expenses have not been allocated to its reportable segments as it would not be feasible to reasonably do so for the periods presented.

(2) Includes merger related costs in connection with the Merger for the year ended December 31, 2014 (see Note 3), and acquisition costs related to the Cardinal and TEAK Acquisitions for the year ended December 31, 2013 (see –Note 4), and the Cardinal Acquisition for the year ended December 31, 2012 (see –Note 4), which are carried at the corporate level.

	Years Ended December 31,
	2014		2013		2012
Capital Expenditures:
Oklahoma	$	347,984	$	235,748	$	248,009
Texas		298,443		211,056		124,910
Corporate and other		1,320		3,756		614
	$	647,747	$	450,560	$	373,533

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	December 31, 2014		December 31, 2013
Balance Sheet
Equity method investment in joint ventures:
Texas	$	177,212	$	162,511
Corporate and other		—		85,790
	$	177,212	$	248,301
Goodwill:
Oklahoma	$	178,762	$	178,762
Texas		187,001		189,810
	$	365,763	$	368,572
Total assets:
Oklahoma	$	2,553,802	$	2,265,231
Texas		2,045,305		1,872,165
Corporate and other		225,626		190,449
	$	4,824,733	$	4,327,845

The following table summarizes the Partnership’s natural gas and liquids sales by product or service for the periods indicated (in thousands):

	Years Ended December 31,
	2014			2013			2012
Natural gas and liquids sales:
Natural gas	$	1,138,110		$	708,817		$	396,867
NGLs		1,347,111			1,132,481			657,271
Condensate		142,094			118,095			85,234
Other		(5,887	)		(249	)		(2,111	)
Total	$	2,621,428		$	1,959,144		$	1,137,261

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NOTE 20 – SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION

The Partnership’s Senior Notes and revolving credit facility are guaranteed by its wholly-owned subsidiaries. The guarantees are full, unconditional, joint and several. The Partnership’s consolidated financial statements include the financial statements of WestOK, LLC, WestTex, LLC and Centrahoma, as well as the equity interests in WTLPG held by two of the Partnership’s subsidiaries, prior to their sale on May 14, 2014 (see Note 5), and the equity interests in the T2 Joint Ventures. Under the terms of the Senior Notes and the revolving credit facility, WestOK, LLC, WestTex, LLC, Centrahoma, WTLPG and the T2 Joint Ventures are non-guarantor subsidiaries as they are not wholly-owned by the Partnership. The following supplemental condensed consolidating financial information reflects the Partnership’s stand-alone accounts, the combined accounts of the guarantor subsidiaries, the combined accounts of the non-guarantor subsidiaries, the consolidating adjustments and eliminations and the Partnership’s consolidated accounts as of December 31, 2014 and 2013 and for the years ended December 31, 2014, 2013 and 2012. For the purpose of the following financial information, the Partnership’s investments in its subsidiaries and the guarantor subsidiaries’ investments in their subsidiaries are presented in accordance with the equity method of accounting (in thousands):

Balance Sheets December 31, 2014	Parent			Guarantor Subsidiaries		Non- Guarantor Subsidiaries		Consolidating Adjustments			Consolidated
Assets
Cash and cash equivalents	$	—		$	174	$	7,929	$	—		$	8,103
Accounts receivable – affiliates		—			206,617		—		(206,617	)		—
Other current assets		121			150,649		196,267		(1,086	)		345,951
Total current assets		121			357,440		204,196		(207,703	)		354,054
Property, plant and equipment, net		—			915,956		2,334,017		—			3,249,973
Intangible assets, net		—			525,730		70,531		—			596,261
Goodwill		—			320,869		44,894		—			365,763
Equity method investment in joint ventures		—			—		177,212		—			177,212
Long term portion of derivative assets		—			37,398		—		—			37,398
Long term notes receivable		—			—		1,852,928		(1,852,928	)		—
Equity investments		4,277,668			903,831		—		(5,181,499	)		—
Other assets, net		37,335			6,287		450		—			44,072
Total assets	$	4,315,124		$	3,067,511	$	4,684,228	$	(7,242,130	)	$	4,824,733
Liabilities and Equity
Accounts payable – affiliates	$	(169,727	)	$	—	$	380,782	$	(206,617	)	$	4,438
Other current liabilities		27,325			68,562		229,274		—			325,161
Total current liabilities		(142,402	)		68,562		610,056		(206,617	)		329,599
Long-term debt, less current portion		1,938,881			5		—		—			1,938,886
Deferred income taxes, net		—			30,914		—		—			30,914
Other long-term liabilities		178			689		6,000		—			6,867
Equity		2,518,467			2,967,341		4,068,172		(7,035,513	)		2,518,467
Total liabilities and equity	$	4,315,124		$	3,067,511	$	4,684,228	$	(7,242,130	)	$	4,824,733

154

December 31, 2013	Parent		Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Consolidating Adjustments			Consolidated
Assets
Cash and cash equivalents	$	—	$	168	$	4,746	$	—		$	4,914
Accounts receivable – affiliates		765,236		—		—		(765,236	)		—
Other current assets		215		52,910		185,975		(2,236	)		236,864
Total current assets		765,451		53,078		190,721		(767,472	)		241,778
Property, plant and equipment, net		—		723,302		2,000,890		—			2,724,192
Intangible assets, net		—		603,533		92,738		—			696,271
Goodwill		—		323,678		44,894		—			368,572
Equity method investment in joint ventures		—		—		248,301		—			248,301
Long term portion of derivative assets		—		2,270		—		—			2,270
Long term notes receivable		—		—		1,852,928		(1,852,928	)		—
Equity investments		3,186,938		1,487,358		—		(4,674,296	)		—
Other assets, net		41,094		1,787		3,580		—			46,461
Total assets	$	3,993,483	$	3,195,006	$	4,434,052	$	(7,294,696	)	$	4,327,845
Liabilities and Equity
Accounts payable – affiliates	$	—	$	423,078	$	345,070	$	(765,236	)	$	2,912
Other current liabilities		26,819		75,031		215,464		—			317,314
Total current liabilities		26,819		498,109		560,534		(765,236	)		320,226
Long-term portion of derivative liabilities		—		320		—		—			320
Long-term debt, less current portion		1,706,556		230		—		—			1,706,786
Deferred income taxes, net		—		33,290		—		—			33,290
Other long-term liabilities		203		1,115		6,000		—			7,318
Equity		2,259,905		2,661,942		3,867,518		(6,529,460	)		2,259,905
Total liabilities and equity	$	3,993,483	$	3,195,006	$	4,434,052	$	(7,294,696	)	$	4,327,845

155

Statements of Operations and Comprehensive Income	Parent			Guarantor Subsidiaries			Non- Guarantor Subsidiaries			Consolidating Adjustments			Consolidated
Year Ended December 31, 2014
Total revenues	$	—		$	707,037		$	2,276,607		$	(8,524	)	$	2,975,120
Total costs and expenses		(93,716	)		(638,352	)		(2,057,682	)		8,524			(2,781,226	)
Equity income (loss)		310,196			191,306			(14,007	)		(501,502	)		(14,007	)
Gain on asset disposition		—			47,829			(448	)		—			47,381
Income (loss), before tax		216,480			307,820			204,470			(501,502	)		227,268
Income tax benefit		—			(2,376	)		—			—			(2,376	)
Net income (loss)		216,480			310,196			204,470			(501,502	)		229,644
Income attributable to non-controlling interest		—			—			(13,164	)		—			(13,164	)
Preferred unit imputed dividend effect		(45,513	)		—			—			—			(45,513	)
Preferred unit dividends in kind		(42,552	)		—			—			—			(42,552	)
Preferred unit dividends		(8,233	)		—			—			—			(8,233	)
Net income (loss) attributable to common limited partners and the General Partner	$	120,182		$	310,196		$	191,306		$	(501,502	)	$	120,182
Year Ended December 31, 2013
Total revenues	$	—		$	504,392		$	1,684,625		$	(82,168	)	$	2,106,849
Total costs and expenses		(86,965	)		(610,208	)		(1,507,806	)		80,955			(2,124,024	)
Equity income (loss)		14,954			160,371			(4,736	)		(175,325	)		(4,736	)
Loss on asset disposition		—			(1,519	)		—			—			(1,519	)
Goodwill impairment loss		—			(43,866	)		—			—			(43,866	)
Loss on early extinguishment of debt		(26,601	)		—			—			—			(26,601	)
Income (loss), before tax		(98,612	)		9,170			172,083			(176,538	)		(93,897	)
Income tax benefit		—			(2,260	)		—			—			(2,260	)
Net income (loss)		(98,612	)		11,430			172,083			(176,538	)		(91,637	)
Income attributable to non-controlling interest		—			—			(6,975	)		—			(6,975	)
Preferred unit imputed dividend effect		(29,485	)		—			—			—			(29,485	)
Preferred unit dividends in kind		(23,583	)		—			—			—			(23,583	)
Net income (loss) attributable to common limited partners and the General Partner	$	(151,680	)	$	11,430		$	165,108		$	(176,538	)	$	(151,680	)

156

Statements of Operations and Comprehensive Income	Parent			Guarantor Subsidiaries			Non- Guarantor Subsidiaries			Consolidating Adjustments			Consolidated
Year Ended December 31, 2012
Total revenues	$	—		$	240,679		$	1,005,341		$	—		$	1,246,020
Total costs and expenses		(39,462	)		(272,284	)		(872,362	)		—			(1,184,108	)
Equity income (loss)		101,511			139,339			—			(234,527	)		6,323
Income (loss), before tax		62,049			107,734			132,979			(234,527	)		68,235
Income tax expense		—			176			—			—			176
Net income (loss)		62,049			107,558			132,979			(234,527	)		68,059
Income attributable to non-controlling interest		—			—			(6,010	)		—			(6,010	)
Net income (loss) attributable to common limited partners and the General Partner	$	62,049		$	107,558		$	126,969		$	(234,527	)	$	62,049
Other comprehensive income:
Adjustment for realized losses on derivatives reclassified to net income (loss)		4,390			4,390			—			(4,390	)		4,390
Comprehensive income (loss) attributable to common limited partners and the General Partner	$	66,439		$	111,948		$	126,969		$	(238,917	)	$	66,439

Statements of Cash Flows	Parent			Guarantor Subsidiaries			Non- Guarantor Subsidiaries			Consolidating Adjustments			Consolidated
Year Ended December 31, 2014
Net cash provided by (used in):
Operating activities	$	111,086		$	269,713		$	277,409		$	(365,679	)	$	292,529
Investing activities		(346,610	)		(247,910	)		(306,057	)		376,238			(524,339	)
Financing activities		235,524			(21,797	)		31,831			(10,559	)		234,999
Net change in cash and cash equivalents		—			6			3,183			—			3,189
Cash and cash equivalents, beginning of period		—			168			4,746			—			4,914
Cash and cash equivalents, end of period	$	—		$	174		$	7,929		$	—		$	8,103
Year Ended December 31, 2013
Net cash provided by (used in):
Operating activities	$	(493,139	)	$	136,862		$	281,141		$	285,980		$	210,844
Investing activities		(757,365	)		(806,159	)		(577,527	)		697,968			(1,443,083	)
Financing activities		1,250,504			669,308			297,891			(983,948	)		1,233,755
Net change in cash and cash equivalents		—			11			1,505			—			1,516
Cash and cash equivalents, beginning of period		—			157			3,241			—			3,398
Cash and cash equivalents, end of period	$	—		$	168		$	4,746		$	—		$	4,914

157

	Parent			Guarantor Subsidiaries			Non- Guarantor Subsidiaries			Consolidating Adjustments			Consolidated
Year Ended December 31, 2012
Net cash provided by (used in):
Operating activities	$	(432,255	)	$	133,153		$	186,494		$	287,246		$	174,638
Total investing activities		(405,501	)		(431,835	)		(419,427	)		250,122			(1,006,641	)
Financing activities		837,756			298,671			236,174			(537,368	)		835,233
Net change in cash and cash equivalents		—			(11	)		3,241			—			3,230
Cash and cash equivalents, beginning of period		—			168			—			—			168
Cash and cash equivalents, end of period	$	—		$	157		$	3,241		$	—		$	3,398

NOTE 21 – QUARTERLY FINANCIAL DATA (Unaudited)

	Fourth Quarter(1)			Third Quarter(2)			Second Quarter(3)			First Quarter(4)
	(in thousands, except per unit data)
Year ended December 31, 2014:
Revenue	$	799,978		$	761,182		$	713,956		$	700,004
Costs and expenses		(684,124	)		(707,084	)		(698,543	)		(691,475	)
Equity loss in joint ventures		(3,543	)		(4,711	)		(3,875	)		(1,878	)
Gain (loss) on asset disposition		(448	)		(636	)		48,465			—
Income before tax		111,863			48,751			60,003			6,651
Income tax benefit		857			623			498			398
Net income		112,720			49,374			60,501			7,049
Income attributable to non-controlling interests		(2,708	)		(4,029	)		(3,965	)		(2,462	)
Preferred unit imputed dividend effect		(11,379	)		(11,378	)		(11,378	)		(11,378	)
Preferred unit dividends in kind		(11,019	)		(11,408	)		(10,406	)		(9,719	)
Preferred unit dividends		(2,609	)		(2,609	)		(2,609	)		(406	)
Net income (loss) attributable to common limited partners and the General Partner		85,005			19,950			32,143			(16,916	)
Net income (loss) attributable to common limited partners per unit – basic and diluted(5)(6)	$	0.76		$	0.13		$	0.27		$	(0.27	)

(1) Net income includes a $112.9 million non-cash derivative gain.

(2) Net income includes a $26.7 million non-cash derivative gain.

(3) Net income includes a $0.3 million non-cash derivative gain.

(4) Net income includes a $1.2 million non-cash derivative gain.

(5) For the first quarter of the year ended December 31, 2014, approximately 1,543,000 phantom units were excluded from the computation of diluted earnings attributable to common limited partners per unit as the impact of the conversion would have been anti-dilutive.

(6) For the first quarter of the year ended December 31, 2014, approximately 13,964,000 weighted average Class D Preferred Units were excluded from the computation of diluted earnings attributable to common limited partners per unit as the impact of the conversion would have been anti-dilutive.

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	Fourth Quarter(1)			Third Quarter(2)			Second Quarter(3)			First Quarter(4)
	(in thousands, except per unit data)
Year ended December 31, 2013:
Revenue	$	580,128		$	557,870		$	560,939		$	407,912
Costs and expenses		(581,918	)		(582,369	)		(548,866	)		(410,871	)
Equity income (loss) in joint ventures		(4,422	)		(1,882	)		(472	)		2,040
Loss on asset disposition		—			—			(1,519	)		—
Goodwill impairment loss		(43,866	)		—			—			—
Loss on early extinguishment of debt		—			—			(19	)		(26,582	)
Income (loss) before tax		(50,078	)		(26,381	)		10,063			(27,501	)
Income tax benefit		1,406			817			28			9
Net income (loss)		(48,672	)		(25,564	)		10,091			(27,492	)
Income attributable to non-controlling interests		(2,282	)		(1,514	)		(1,810	)		(1,369	)
Preferred unit imputed dividend effect		(11,378	)		(11,378	)		(6,729	)		—
Preferred unit dividends in kind		(9,170	)		(9,072	)		(5,341	)		—
Net loss attributable to common limited partners and the General Partner		(71,502	)		(47,528	)		(3,789	)		(28,861	)
Net loss attributable to common limited partners per unit – basic and diluted(5)(6)	$	(0.94	)	$	(0.66	)	$	(0.11	)	$	(0.48	)

(1) Net income includes a $15.4 million non-cash derivative loss.

(2) Net income includes a $23.6 million non-cash derivative loss.

(3) Net income includes a $24.3 million non-cash derivative gain.

(4) Net income includes a $13.7 million non-cash derivative loss.

(5) For the fourth, third, second, and first quarters of the year ended December 31, 2013, approximately 1,476,000, 1,455,000, 967,000, and 1,055,000 phantom units, respectively, were excluded from the computation of diluted earnings attributable to common limited partners per unit, because the inclusion of such phantom units would have been anti-dilutive.

(6) For the fourth, third, and second quarters of the year ended December 31, 2013, approximately 13,709,000, 13,518,000, and 9,013,000 weighted average Class D Preferred Units, respectively, were excluded from the computation of diluted earnings attributable to common limited partners per unit as the impact of the conversion would have been anti-dilutive.

NOTE 22 – SUBSEQUENT EVENTS

On January 9, 2015, the Partnership declared a cash distribution of $0.64 per unit on its outstanding common limited partner units, representing the cash distribution for the quarter ended December 31, 2014. The $62.2 million distribution, including $8.1 million to the General Partner for its general partner interest and incentive distribution rights, was paid on February 13, 2015 to unitholders of record at the close of business on January 21, 2015 (see Note 6).

On January 15, 2014, the Partnership paid a cash distribution of $0.515625 per unit, or approximately $2.6 million, on its Class E Preferred Units, representing the cash distribution for the period October 15, 2014 through January 14, 2015 (See Note 6).

On January 15, 2015, TRP announced cash tender offers to redeem any and all of the outstanding $500.0 million aggregate principal amount of the 6.625% Senior Notes; $400.0 million aggregate principal amount of the 4.75% Senior Notes; and $650.0 million aggregate principal amount of the 5.875% Senior Notes (see Note 14). TRP made the cash tender offers in connection with, and conditioned upon, the consummation of the Merger (see Note 3). The Merger, however, is not

159

conditioned on the consummation of the tender offers. On February 2, 2015, TRP announced as of January 29, 2015, it had received tenders pursuant to its previously announced cash tender offers on January 15, 2015 from holders representing:

• less than a majority of the total outstanding $500.0 million of the 6.625% Senior Notes;

• approximately 98.3% of the total outstanding $400.0 million of the 4.75% Senior Notes; and

• approximately 91.0% of the total outstanding $650.0 million of the 5.875% Senior Notes.

Also on February 2, 2015, TRP announced a change of control cash tender offer for any and all of the outstanding $500.0 million of the 6.625% Senior Notes. TRP made the change of control cash tender offer in connection with, and conditioned upon, the consummation of the Merger. The Merger, however, is not conditioned on the consummation of the change in control cash tender offer. The change in control cash tender offer was made independently of TRP’s January 15, 2015 cash tender offers (see Note 14).

On January 22, 2015, the Partnership exercised its right under the Class D Certificate of Designation to convert all outstanding Class D Preferred Units and unpaid distributions into common limited partner units, based upon the Execution Date Unit Price of $29.75 per unit, as defined by the Class D Certificate of Designation. As a result of the conversion, 15,389,575 common limited partner units were issued (see Note 6).

On January 27, 2015, the Partnership delivered notice of its intention to redeem all outstanding shares of its Class E Preferred Units. The redemption of the Class E Preferred Units will occur immediately prior to the close of the Merger (See Note 3). The Partnership expects the Merger to close on February 27, 2015 and, accordingly, the redemption would also be on February 27, 2015. The Class E Preferred Units will be redeemed at a redemption price of $25.00 per unit, plus an amount equal to all accumulated and unpaid distributions on the Class E Preferred Units as of the redemption date. TRP has agreed to deposit the funds for such redemption with the paying agent (see Note 6).

On February 20, 2015, the Partnership held a special meeting, where holders of a majority of its common units approved the Merger. In addition, at special meetings held on the same day: (i) a majority of the holders of ATLS common units approved the ATLS Merger and (ii) a majority of the holders of TRC common stock approved the issuance of TRC shares in connection with the Merger. Completion of each of the ATLS Merger and the Spin-Off are also conditioned on the parties standing ready to complete the Merger. The Merger is expected to close on February 27, 2015 (see Note 3).

On February 27, 2015, the Partnership agreed to transfer 100% of the Partnership’s interest in gas gathering assets located in the Appalachian Basin of Tennessee to the Partnership’s affiliate, ARP, for $1.0 million plus working capital adjustments, concurrent with the closing of the Merger on February 27, 2015.

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ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

None.

ITEM 9A. CONTROLS AND PROCEDURES

Conclusion Regarding the Effectiveness of Disclosure Controls and Procedures

We maintain disclosure controls and procedures that are designed to ensure information required to be disclosed in our Securities Exchange Act of 1934 reports is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms, and that such information is accumulated and communicated to our management, including our General Partner’s Chief Executive Officer (“CEO”) and Chief Financial Officer (“CFO”), as appropriate, to allow timely decisions regarding required disclosure. In designing and evaluating the disclosure controls and procedures, our management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives, and our management is required to apply its judgment in evaluating the cost-benefit relationship of possible controls and procedures.

Under the supervision of our General Partner’s CEO and CFO and with the participation of our disclosure committee appointed by such officers, we have carried out an evaluation of the effectiveness of our disclosure controls and procedures as of the end of the period covered by this report. Based upon that evaluation, our General Partner’s CEO and CFO concluded that, as of December 31, 2014, our disclosure controls and procedures were effective at the reasonable assurance level.

Management’s Report on Internal Control over Financial Reporting

The management of our General Partner is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in Exchange Act Rule 13a-15(f). Under the supervision and with the participation of management, including our General Partner’s CEO and CFO, we conducted an evaluation of the effectiveness of internal control over financial reporting based upon criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission in the 1992 Internal Control – Integrated Framework (“1992 COSO framework”).

An effective internal control system, no matter how well designed, has inherent limitations, including the possibility of human error and circumvention or overriding of controls and therefore can provide only reasonable assurance with respect to reliable financial reporting. Furthermore, effectiveness of an internal control system in future periods cannot be guaranteed because the design of any system of internal controls is based in part upon assumptions about the likelihood of future events. There can be no assurance that any control design will succeed in achieving its stated goals under all potential future conditions. Over time certain controls may become inadequate because of changes in business conditions, or the degree of compliance with policies and procedures may deteriorate. As such, misstatements due to error or fraud may occur and not be detected.

Based on our evaluation under the 1992 COSO framework, management concluded that internal control over financial reporting was effective at the reasonable assurance level as of December 31, 2014. Grant Thornton LLP, an independent registered public accounting firm and auditors of our consolidated financial statements, has issued its report on the effectiveness of the Partnership’s internal control over financial reporting as of December 31, 2014, which is included herein.

There have been no changes in our internal control over financial reporting during the fourth quarter of 2014 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

161

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Board of Directors and Unitholders

Atlas Pipeline Partners, L.P.

We have audited the internal control over financial reporting of Atlas Pipeline Partners, L.P. (a Delaware limited partnership) and subsidiaries (the “Partnership”) as of December 31, 2014, based on criteria established in the 1992 Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). The Partnership’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’s Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Partnership’s internal control over financial reporting based on our audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

In our opinion, the Partnership maintained, in all material respects, effective internal control over financial reporting as of December 31, 2014, based on criteria established in the 1992 Internal Control—Integrated Framework issued by COSO.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated financial statements of the Partnership as of and for the year ended December 31, 2014, and our report dated February 27, 2015 expressed an unqualified opinion on those financial statements.

/s/ GRANT THORNTON LLP

Tulsa, Oklahoma

February 27, 2015

162

ITEM 9B. OTHER INFORMATION

The description of the potential cash awards to our NEOs that appears under “Item 11: Executive Compensation—Compensation Discussion and Analysis—Determination of 2014 Compensation Amounts—Annual Incentives” is incorporated herein by reference.

PART III.

ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

Our General Partner manages our activities. Unitholders do not directly or indirectly participate in our management or operation or have actual or apparent authority to enter into contracts on our behalf or to otherwise bind us. Our General Partner will be liable, as general partner, for all our debts to the extent not paid, except to the extent that indebtedness or other obligations incurred by us are specifically with recourse only to our assets. Whenever possible, our General Partner intends to make any of our indebtedness or other obligations with recourse only to our assets.

As set forth in our Partnership Governance Guidelines and in accordance with NYSE listing standards, the non-management members of our General Partner’s managing board meet in executive session regularly without management. The managing board member who presides at these meetings rotates at each meeting. The purpose of these executive sessions is to promote open and candid discussion among the non-management board members. Interested parties wishing to communicate directly with the non-management members may contact the chairman of the audit committee, Martin Rudolph, at P.O. Box 769, Ardmore, Pennsylvania 19003.

The independent board members comprise all the members of the managing board’s conflicts committee, audit committee, environmental health and safety committee and compensation committee. The conflicts committee has the authority to review specific matters as to which the managing board believes there may be a conflict of interest to determine if the resolution of the conflict proposed by our General Partner is fair and reasonable to us, or as contemplated by our related party transaction policy. The audit committee reviews the external financial reporting by our management, the audit by our independent public accountants, the procedures for internal auditing and the adequacy of our internal accounting controls. Our audit committee has assumed the duties of our risk oversight committee and assists in evaluating, monitoring and addressing various risks that face us. The environmental, health and safety committee monitors our practices and performance, and makes recommendations, with respect to environmental, health and safety matters. The compensation committee acts in coordination with the compensation committee of Atlas Energy, L.P. (“ATLS”) in evaluating the compensation paid or payable to our General Partner’s Chief Executive Officer and other named executive officers of our General Partner. Our compensation committee reviews compensation paid or payable under individual employment agreements, our executive compensation and bonus programs, our director compensation arrangements and our long-term incentive and other compensation and benefit plans.

As is commonly the case with publicly traded limited partnerships, we do not directly employ any of the persons responsible for our management or operation. Rather, all the personnel that manage and operate our business are employed by ATLS. Some officers of our General Partner may spend a substantial amount of time managing the business and affairs of ATLS and its affiliates, and may face a conflict regarding the allocation of their time between our business and affairs and their other business interests.

163

Managing Board Members and Executive Officers of Our General Partner

The following table sets forth information with respect to the executive officers and managing board members of our General Partner:

Name	Age	Position with the General Partner	Year in which service began
Edward E. Cohen	76	Executive Chairman of the Managing Board	1999
Jonathan Z. Cohen	44	Executive Vice Chairman of the Managing Board	1999
Eugene N. Dubay	66	Chief Executive Officer and Managing Board Member	2008
Patrick J. McDonie	54	President and Chief Operating Officer	2012
Robert W. Karlovich, III	37	Chief Financial Officer	2006
Gerald R. Shrader	55	Chief Legal Officer and Secretary	2007
Tony C. Banks	60	Managing Board Member	1999
Curtis D. Clifford	72	Managing Board Member	2004
Gayle P. W. Jackson	68	Managing Board Member	2011
Martin Rudolph	68	Managing Board Member	2005
Michael L. Staines	65	Managing Board Member	1999

Edward E. Cohen has been the Executive Chairman of the managing board of our General Partner since its formation in 1999. Mr. Cohen was the Chief Executive Officer of our General Partner since its formation in 1999 through January 2009. Mr. Cohen has been the Chief Executive Officer and President of Atlas Energy GP, LLC (formerly known as Atlas Pipeline Holdings, GP, LLC) (“Atlas Energy, GP”) the general partner of ATLS since February 2011 and before that he served as Chairman of the Board from its formation in January 2006 until February 2011. Mr. Cohen served as Chief Executive Officer of ATLS from its formation until February 2009. Mr. Cohen also was the Chairman of the Board and Chief Executive Officer of Atlas Energy, Inc. (“AEI”) from its organization in 2000, until its consummation with Chevron Corporation in February 2011 (the “Chevron Merger”), and also served as its President from 2000 to October 2009 when Atlas Energy Resources, LLC (“Atlas Energy Resources”) became its wholly-owned subsidiary following its merger transaction. Mr. Cohen has served as Chairman of the Board of Atlas Resource Partners GP, LLC since February 2012. Mr. Cohen was the Chairman of the Board and Chief Executive Officer of Atlas Energy Resources and its manager, Atlas Energy Management, Inc. from their formation in June 2006, until the consummation of the Chevron Merger in February 2011. In addition, Mr. Cohen has been Chairman of the Board of Directors of Resource America, Inc. (a publicly-traded specialized asset management company) since 1990 and was its Chief Executive Officer from 1988 until 2004, and President from 2000 until 2003; Chairman of the Board of Resource Capital Corp. (a publicly-traded real estate investment trust) since its formation in September 2005 until November 2009 and currently serves on its board; and Chairman of the Board of Brandywine Construction & Management, Inc. (a property management company) since 1994. Mr. Cohen is the father of Jonathan Z. Cohen. Mr. Cohen has been active in the energy business for over 30 years. Mr. Cohen’s strong financial and energy industry experience, along with his deep knowledge of the company resulting from his long tenure with the company, enables Mr. Cohen to provide valuable perspectives on many issues facing the company. Mr. Cohen’s service on the managing board of our General Partner creates an important link between management and the managing board and provides the company with decisive and effective leadership. Mr. Cohen’s extensive experience in founding, operating and managing public and private companies of varying size and complexity enables him to provide valuable expertise to

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the company. Additionally, among the reasons for his appointment as a director, Mr. Cohen brings to the managing board the vast experience that he has accumulated through his activities as a financier, investor and operator in various parts of the country. These diverse experiences have enabled Mr. Cohen to bring unique perspectives to the managing board, particularly with respect to business management, financial markets and financing transactions and corporate governance issues.

Jonathan Z. Cohen has been Executive Vice Chairman of the managing board of our General Partner since our formation in 1999. Mr. Cohen has been the Executive Chairman of the Board of Atlas Energy, GP, the general partner of ATLS, since January 2012. Before that, he served as its Chairman from February 2011 to January 2012 and as Vice Chairman from its formation in January 2006 until February 2011. Mr. Cohen also was the Vice Chairman of the Board of AEI from its organization in 2000, until the consummation of the Chevron Merger in February 2011. Mr. Cohen has served as the Vice Chairman of the Board of Atlas Resource Partners GP, LLC since February 2012. Mr. Cohen was the Vice Chairman of the Board of Atlas Energy Resources and Atlas Energy Management from their formation in June 2006, until the consummation of the Chevron Merger in February 2011. Mr. Cohen has been a senior officer of Resource America, Inc. (a publicly-traded specialized asset management company) since 1998, serving as the Chief Executive Officer since 2004, President since 2003 and a director since 2002. Mr. Cohen has been Chief Executive Officer, President and a director of Resource Capital Corp. (a publicly-traded real estate investment trust) since 2005. Mr. Cohen is a son of Edward E. Cohen. Mr. Cohen’s extensive knowledge of the company resulting from his long length of service with the company, as well as his strong financial and industry experience, allow him to contribute valuable perspectives on many issues facing the company. Mr. Cohen’s service on the managing board of our General Partner creates an important link between management and the managing board and provides the company with decisive and effective leadership. Mr. Cohen’s involvement with public and private entities of varying size, complexity and focus and raising debt and equity for such entities provides him with extensive experience and contacts that are valuable to the company. Additionally, among the reasons for his appointment as a director, Mr. Cohen’s financial, business, operational and energy experience, as well as the experience he has accumulated through his activities as a financier and investor, adds strategic vision to our General Partner’s managing board to assist with our growth, operations and development. Mr. Cohen is able to draw upon these diverse experiences to provide guidance and leadership with respect to exploration and production operations, capital markets and corporate finance transactions and corporate governance issues.

Eugene N. Dubay has been Chief Executive Officer of our General Partner since January 2009 and served as President from January 2009 until October 2013. Mr. Dubay has served as a member of the managing board of our General Partner since October 2008, where he served as an independent member until his appointment as President and Chief Executive Officer. Mr. Dubay was the Chief Executive Officer, President and a director of ATLS from February 2009 until February 2011, and now serves as Senior Vice President of Midstream Operations. Mr. Dubay has been the President of Atlas Pipeline Mid-Continent LLC, our wholly-owned subsidiary, since January 2009. Mr. Dubay was the Chief Operating Officer of Continental Energy Systems LLC, the parent of SEMCO Energy, from 2002 to January 2009. Mr. Dubay has also held positions with ONEOK, Inc. and Southern Union Company and has over 20 years’ experience in midstream assets and utilities operations, strategic acquisitions, regulatory affairs and finance. Mr. Dubay is a certified public accountant and a graduate of the U.S. Naval Academy. Throughout his career, Mr. Dubay has held positions of increasing responsibility in the energy industry. In these positions, Mr. Dubay has been responsible for developing and implementing strategic plans including, as applicable, regulatory strategies. This long-range approach is important to the Board’s development of our strategic plans. The Board also benefits from Mr. Dubay’s management and operational experience, as well as his strong leadership. This combined experience served as the basis for Mr. Dubay’s appointment as a director.

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Patrick J. McDonie has been President of our General Partner since October 2013 and Chief Operating Officer of our General Partner since July 2012. Mr. McDonie served as a Senior Vice President of our General Partner from July 2012 until October 2013. Prior to that, from May 2008 to July 2012, Mr. McDonie was the President of ONEOK Energy Services Company, a natural gas transportation, storage, supplier and marketing company. Before becoming President of ONEOK Energy Services Company, Mr. McDonie was its Senior Vice President of Origination and New Business Development from 2005 to 2008. Before that, from 1997 to 2000, Mr. McDonie was Director of Trading and then, from 2000 to 2005, Vice President of Trading, for ONEOK Gas Marketing Company.

Robert W. Karlovich, III has been the Chief Financial Officer of our General Partner since October 2011 and the Chief Accounting Officer of our General Partner since November 2009. Mr. Karlovich was also the Chief Accounting Officer of Atlas Energy GP from November 2009 until March 2011. Before that, he was the Controller of Atlas Pipeline Mid-Continent LLC since September 2006. Mr. Karlovich was the Controller for Syntroleum Corporation, a publicly-traded energy company, from April 2005 until September 2006, and Accounting Manager from February 2004. Mr. Karlovich also worked as a public accountant with Arthur Andersen LLP and Grant Thornton LLP where he served numerous public clients and energy companies. Mr. Karlovich is a certified public accountant.

Gerald R. Shrader has been the Chief Legal Officer and Secretary of our General Partner since October 2009. Mr. Shrader has also been the General Counsel and a Senior Vice President of Atlas Pipeline Mid-Continent LLC since August 2007 and was the Chief Legal Officer and Secretary of Atlas Energy GP from October 2009 through February 2011. From January 2006 through July 2007, Mr. Shrader was an Assistant General Counsel with CMS Enterprises Company, a subsidiary of CMS Energy Corporation, a publicly-traded energy company. Prior to that time, Mr. Shrader worked both for publicly-traded energy companies and in private practice, including the provision of legal services to private and publicly-traded energy companies.

Tony C. Banks is the founder and has been President and Chief Executive Officer since August 2012 of Star Energy Partners, LLC, a retail provider of electricity, natural gas and energy related products and services to residential and business customers in competitive markets throughout the U.S. Prior to that, from February 2011 to August 2012, Mr. Banks was Vice President of Competitive Market Policies of FirstEnergy Solutions Corp., a subsidiary of FirstEnergy Corporation, a public utility, and from October 2009 to February 2011, he served as its Vice President of Product and Market Development. From March 2007 to October 2009, Mr. Banks served as Vice President of Business Development, Performance & Management for FirstEnergy Corporation and from December 2005 to February 2007, Mr. Banks was its Vice President of Business Development. Mr. Banks first joined FirstEnergy Solutions, Corp., in August 2004 as Director of Marketing and in August 2005 became Vice President of Sales & Marketing. Before joining FirstEnergy, Mr. Banks was a consultant to utilities, energy service companies and energy technology firms. From 2000 through 2002, Mr. Banks was President of RAI Ventures, Inc. and Chairman of the board of Optiron Corporation, an energy technology subsidiary of AEI. In addition, Mr. Banks served as President of our General Partner during 2000 and served as Chief Executive Officer and President of AEI from 1998 through 2000. In Mr. Banks’ role at AEI, he gained experience in natural gas exploration and production. He also served on the board of directors of TRM Corporation, a provider of ATM services, from October 2006 to April 2008. Mr. Banks is a noted expert in competitive retail energy markets, having provided written and oral testimony in several states on regulatory policy and utility tariff filings and, over the past 10 years, has been engaged with electricity generation, pricing and marketing (including involvement with renewable energy standards and compliance with emission requirements for electricity generators). The Board benefits from Mr. Banks’ knowledge of natural gas production and energy markets, including natural gas markets.

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Curtis D. Clifford has been the principal of CL4D CO, an energy consulting, marketing and reporting firm since 1998. From January 2001 through June 2010, he worked for UtiliTech, Inc., utility and telecommunications specialists in West Lawn, PA, where he advised and assisted commercial and industrial gas consumers nationwide with procurement activities and utility rate options. In July 2010, he transitioned to a consultant role for UtiliTech and continues in that role for Edge Insights, successor to UtiliTech effective January2014. He is also President and Chairman of the board of Amity Manor, Inc., a non-profit corporation, which he founded in 1988 to develop housing for low-income elderly using tax credit financing. Mr. Clifford is a Life Member of the American Society of Civil Engineers and is a registered professional engineer in Pennsylvania. Mr. Clifford has 48 years’ experience in the natural gas industry, from exploration, production and gathering to procurement, marketing and utility rates. Mr. Clifford’s experience and working knowledge of the gas industry provide valuable strategic insight into opportunities for our services, as well as compliance responsibilities with respect to our operations.

Gayle P.W. Jackson, PhD has been President and CEO of Energy Global, Inc., a consulting firm, which specializes in corporate development, diversification and government relations strategies for energy companies, since 2004. From 2001 to 2004, Dr. Jackson served as Managing Director of FE Clean Energy Group, a global private equity management firm that invests in energy companies and projects in Asia, Central and Eastern Europe and Latin America. From 1985 to 2001, Dr. Jackson was President of Gayle P.W. Jackson, Inc., a consulting firm that advised energy companies on corporate development and diversification strategies and also advised national and international governmental institutions on energy policy. From 1985 to 1995, she was also Chief of Staff of the International Energy Agency’s Coal Industry Advisory Board. Dr. Jackson served as Deputy Chairman of the Federal Reserve Bank of St. Louis in 2004-05 and was a member of the Federal Reserve Bank Board from 2000 to 2005. She is a member of the Board of Directors of Ameren Corporation, a publicly-traded public utility holding company, as well as its Nominating and Corporate Governance Committee and Nuclear Oversight and Environmental Committee. She is also a member of the Advisory Panel of Climate Change Capital Private Equity, a London-based private equity buyout fund manager that invests in clean technology companies. Dr. Jackson served as an independent director of AEI from July 2009 until the consummation of the Chevron Merger in 2011. Dr. Jackson served as an independent member of the managing board of our General Partner from March 2005 until July 2009. The Board benefits from Dr. Jackson’s experience in the energy industry, including her previous service as a director of our General Partner, as well as AEI. Dr. Jackson’s strong background in finance assists the Board in evaluating investment alternatives and the Partnership’s capital needs.

Martin Rudolph has been the Trustee of the AHP Settlement Trust, a billion dollar trust established to process litigation claims, since 2005. Before that, Mr. Rudolph was a director of tax planning, research and compliance for RSM McGladrey, Inc., a business services firm from 2001 to 2005. From 1990 to 2001, he was the Managing Partner of Rudolph, Palitz LLC, which merged with McGladrey & Pullen LLP, a national accounting firm, where he was the Managing Partner of the Philadelphia economic unit. In that position, he oversaw all of the professional services rendered by the firm, which included the audit of public and privately-held companies. Mr. Rudolph brings a strong accounting background to our board and serves as the chair of our audit committee. Mr. Rudolph has over 40 years of experience as an independent certified public accountant, which has been critical in developing and overseeing our internal audit program. Additionally, Mr. Rudolph’s vast finance and accounting experience enable him to provide guidance with respect to accounting matters, as well as evaluating financing alternatives.

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Michael L. Staines has been the President of Pine Tree Energy Partners, LLC, an energy consulting firm since October 2009. From 2000 to January 2009, Mr. Staines was our President and Chief Operating Officer. Mr. Staines was an Executive Vice President of AEI from its formation in 2000 until July 2009. Mr. Staines was Senior Vice President of Resource America, Inc. from 1989 to 2004 and served as a director from 1989 through 2000 and Secretary from 1989 through 1998. Mr. Staines is a member of the Independent Oil and Gas Association of Pennsylvania and the Independent Petroleum Association of America. Mr. Staines brings extensive knowledge regarding oil and gas production in Pennsylvania, which complemented our development and participation in Laurel Mountain. In addition, Mr. Staines has historical knowledge of our company and operations and was involved in our strategic development. The Board benefits from these combined experiences coupled with Mr. Staines’ extensive knowledge of the energy industry.

We have assembled a managing board of directors of our General Partner comprised of individuals who bring diverse but complementary skills and experience to oversee our business. Our managing board members collectively have a strong background in energy, finance, accounting and management. Based upon the experience and attributes of the managing board members discussed herein, the managing board of our General Partner determined that each of the managing board members should serve on the managing board of our General Partner.

Edward E. Cohen serves as the Executive Chairman of the managing board of our General Partner and Eugene N. Dubay serves as the Chief Executive Officer of our General Partner. The managing board of our General Partner believes that oversight of management is an important component of an effective managing board. The managing board believes that the most effective leadership structure at the present time is for separation of the chairman of the managing board from the chief executive officer positions. The managing board believes that because the chief executive officer is ultimately responsible for our day-to-day operations and for executing our strategy, we are best served to have a separate chairman of the managing board as it allows for proper oversight, guidance and accountability. The chief executive officer contacts the chairman of the managing board on a regular basis and provides status updates of operations during these discussions. Additionally, our Chief Executive Officer and the Executive Chairman of the managing board, along with the Executive Vice Chairman of the managing board, serve together as our executive committee.

Risk Oversight

Our audit committee assumes the duties of our risk oversight. In its risk oversight role, our audit committee reports to the managing board periodically on its activities and is generally responsible for overseeing the guidelines and policies that govern our enterprise risk management program. Our audit committee provides oversight for a management-level risk management committee comprised of members of senior management, which is tasked with monitoring material enterprise risks, overseeing our framework for management of risks and reporting any significant changes or updates to our key risks to the audit committee and our CEO. Our audit committee coordinates and exchanges information with our environmental, health and safety committee with respect to the monitoring and assessment of the risks facing us on environmental, health and safety matters. Additionally, individuals who oversee risk management in liquidity and credit areas, along with environmental, litigation and other operational areas, periodically provide reports to the managing board during regular board meetings. Our managing board has access to our management at all levels to discuss any matters of interest, including those related to risk.

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Section 16(a) Beneficial Ownership Reporting Compliance

Section 16(a) of the Securities Exchange Act of 1934 requires executive officers and managing board members of our General Partner and persons who beneficially own more than 10% of a registered class of our equity securities to file reports of ownership and changes in ownership with the Securities and Exchange Commission and to furnish us with copies of all such reports.

Based solely upon our review of reports received by us, or representations from certain reporting persons that no filings were required, we believe that all of the officers and managing board members of our General Partner and persons who beneficially owned more than 10% of our common units complied with all applicable filing requirements during fiscal year 2014, except that Mr. Dubay inadvertently filed one late Form 4 and Dr. Jackson inadvertently filed one late Form 5.

Reimbursement of Expenses of Our General Partner and Its Affiliates

Our General Partner does not receive any management fee or other compensation for its services apart from its general partner and incentive distributions. We reimburse our General Partner and its affiliates for all expenses incurred on our behalf. These expenses include the costs of employee, officer and managing board member compensation and benefits properly allocable to us, and all other expenses necessary or appropriate to the conduct of our business. Our partnership agreement provides that our General Partner will determine the expenses that are allocable to us in any reasonable manner determined by our General Partner, in its sole discretion. Our General Partner allocates the costs of employee and officer compensation and benefits based upon the amount of time spent on our business by those employees and officers. In addition to those expenses directly attributable to our business (such as the compensation and benefits for officers and employees that devote all their time to our business and specific awards under our incentive compensation programs), in 2014 we reimbursed our General Partner and its affiliates $5.1 million for an allocated share of compensation and benefits for officers and employees that do not devote all their time to our business.

Information Concerning the Audit Committee

The managing board of our General Partner has a standing audit committee. All the members of the audit committee are independent directors as defined by NYSE rules. The members of the audit committee are Mr. Rudolph, Mr. Banks and Dr. Jackson, with Mr. Rudolph acting as the chairperson. The managing board has determined that Mr. Rudolph is an “audit committee financial expert,” as defined by SEC rules. The audit committee reviews the external financial reporting by our management, the audit by our independent public accountants, the procedures for internal auditing and the adequacy of our internal accounting controls. Our audit committee has assumed the duties of our risk oversight committee and assists in evaluating, monitoring and addressing various risks that face us.

Compensation Committee Interlocks and Insider Participation

The compensation committee of the managing board of our General Partner consists of Messrs. Banks, Clifford and Rudolph, with Mr. Banks acting as the chairperson.

Mr. Banks was the Chairman of the Board of Optiron Corporation, which was a subsidiary of AEI until 2002. In addition, Mr. Banks served as President of our General Partner during 2000. He was Chief Executive Officer and President of AEI from 1998 through 2000. At our October 2006 managing board meeting, the managing board initially determined Mr. Banks to be an independent board member pursuant to NYSE listing standards and Rule 10A-3(b) promulgated under the Securities Exchange Act of 1934. This determination was re-affirmed at our January 2014 Board meeting. No executive officer of our General Partner is a director or executive officer of any entity in which an independent managing board member is a director or executive officer.

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Code of Business Conduct and Ethics, Partnership Governance Guidelines and Committee Charters

We have adopted a code of business conduct and ethics that applies to the principal executive officer, principal financial officer and principal accounting officer of our General Partner, as well as to persons performing services for us generally. We have also adopted Partnership Governance Guidelines and charters for our audit committee, compensation committee and environmental health and safety committee. We will make a printed copy of our code of ethics, our Partnership Governance Guidelines and our committee charters available to any unitholder who so requests. Requests for print copies may be directed to us as follows: Atlas Pipeline Partners, L.P., Park Place Corporate Center One, 1000 Commerce Drive, 4^th Floor, Pittsburgh, Pennsylvania 15275-1011, Attention: Secretary. Each of the code of business conduct and ethics, the Partnership Governance Guidelines and the committee charters are posted, and any waivers we grant to our business conduct and ethics will be posted, on our website at www.atlaspipeline.com.

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ITEM 11. EXECUTIVE COMPENSATION

Compensation Discussion and Analysis

We are required to provide information regarding the compensation program in place as of December 31, 2014, for our General Partner’s Chief Executive Officer (“CEO”), Chief Financial Officer (“CFO”) and the three other most highly-compensated executive officers. In this report, we refer to our General Partner’s CEO, CFO and the other three most highly-compensated executive officers as our “named executive officers” or “NEOs.” This section should be read in conjunction with the detailed tables and narrative descriptions below.

Until completion of the Merger, our NEOs, as well as the other people who work for us, will be employees of ATLS. Therefore, we do not directly provide cash compensation to our NEOs. ATLS allocates the base cash compensation of our NEOs between activities on behalf of us and activities on behalf of it and its other affiliates based upon an estimate of the time spent by such persons on activities for us and for it and its affiliates. In addition, ATLS adds 50% to the compensation amount allocated to us to cover the costs of health insurance and similar benefits, which represents their estimated incremental costs. Because Messrs. Dubay, Karlovich and McDonie devote all their time to us, all their cash compensation costs are allocated to us. Our compensation committee is responsible for designing our compensation objectives and methodology and determining compensation payable to those officers and employees who devote time to our business. Our compensation committee also administers our benefit plans and programs. The determinations of our compensation committee are provided to the ATLS compensation committee, and the ATLS compensation committee retains the right to accept, reject or modify the determinations with respect to the NEOs that serve both companies. ATLS also administers its own benefit plans, some costs of which are allocated to us. Awards under our incentive plans are coordinated by the ATLS compensation committee with awards made under ATLS’ incentive plans. We incur the costs associated with any awards that our compensation committee makes under our incentive programs (including awards to officers and employees that devote only a portion of their time to us). Our compensation committee is comprised solely of independent directors, consisting of Messrs. Banks, Clifford and Rudolph, with Mr. Banks acting as the chairperson.

Compensation Objectives

Our compensation committee believes our compensation program must support our business strategy, be competitive, and provide both significant rewards for outstanding performance and clear financial consequences for underperformance. It also believes a significant portion of the NEOs’ compensation should be “at risk” in the form of annual and long-term incentive awards that are made, if at all, based on individual and company accomplishment. Our compensation committee considers cost implications as well as our business needs (including the need to attract and retain qualified personnel to run our business) in the design of our compensation programs.

Compensation Methodology

Our compensation committee generally establishes compensation amounts shortly after the close of our fiscal year. In the case of base salaries, it approves the amounts to be paid for the new fiscal year. In the case of annual incentive awards, the compensation committee approves or recommends the amount of awards based on the then concluded fiscal year. We typically make determinations with respect to salary adjustments and make annual incentive awards in February, although the compensation committee has the discretion to make salary adjustments and equity awards throughout the year. Some of our NEOs also receive stock-based awards from ATLS.

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The Executive Chairman of the managing board of our General Partner, who also serves as the CEO and President of ATLS’ general partner, provides our compensation committee with key elements of our financial and operating performance for the preceding year, as well as the individual performance of our NEOs. The Executive Chairman makes recommendations to our compensation committee regarding the salary and annual incentive compensation for each NEO. The Executive Chairman may also, either annually or at other times during the year, make recommendations with respect to long-term incentive awards. The Executive Chairman, at our compensation committee’s request, may attend compensation committee meetings to provide insight into our company’s performance, as well as the performance of other comparable companies in the same industry. For 2014 compensation determinations, the CEO of our General Partner also provided the compensation committee with his assessment of the performance of our NEOs, and made recommendations regarding cash incentive compensation. Due to pendency of the Merger, no recommendations were provided to our compensation committee with respect to salary adjustments of our NEOs for 2015.

Role of Compensation Consultant

In late 2012, our compensation committee engaged Meridian Compensation Partners, LLC (“Meridian”), an independent compensation consulting firm, to evaluate the competitiveness of our executive and board compensation programs. For executive compensation, the evaluation included an analysis of 2012 base salaries, target bonuses and equity awards of executive officers that devote all their time to us. Meridian was not asked to conduct an analysis with respect to executive officers (including NEOs) that do not devote all their time to our business. For board compensation, the evaluation consisted of an analysis of average annual board compensation consisting of a combination of: (i) annual board retainer and/or meeting fees; (ii) annual equity awards; and (iii) committee chairperson retainer and/or meeting fees. Meridian also advised our compensation committee with respect to compensation practices generally.

In order to assist the compensation committee in assessing the competitiveness of our executive and outside director compensation programs, Meridian provided market data for a peer group consisting of similarly-sized publicly-traded master limited partnerships engaged in the gathering and processing business. Meridian proposed a group of eighteen companies, all of which publicly disclosed comparable outside director compensation programs, and twelve which disclosed comprehensive executive compensation programs. Compensation data was compiled from publicly available information, as reported for the 2011 fiscal year, for the following companies:

Peer Group for Executive and Board Compensation

• MarkWest Energy Partners LP

• Regency Energy Partners LP

• Targa Resources Partners LP

• Access Midstream Partners LP

• PVR Partners LP

• Copano Energy LLC

• DCP Midstream Partners LP

• Eagle Rock Energy Partners LP

• Crosstex Energy Inc.

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• Crestwood Midstream Partners LP

• Summit Midstream Partners LP

• Blueknight Energy Partners LP

Also included in the Peer Group for Board Compensation:

• Martin Midstream Partners LP

• Western Gas Partners LP

• Rose Rock Midstream LP

• Holly Energy Partners LP

• Tesoro Logistics LP

• EQT Midstream Partners LP

Our compensation committee accepted Meridian’s proposed peer group. Meridian also made use of a broad-based survey regarding compensation at energy companies generally, as well as pipeline companies. Meridian used the survey principally for the analysis of management level employees in our organization, because the peer group analysis did not generate adequate compensation information other than for our top four executives.

Meridian found that:

• the 2012 base salaries for Messrs. Dubay, McDonie and Karlovich were generally aligned with the 75th percentile of our peer group; and

• the long-term incentive awards for 2012, standing alone, were substantially in excess of typical annual awards made by our peers, while the combined beneficial ownership and outstanding equity awards in favor of our NEOs that were covered by Meridian’s report (after taking the 2012 equity awards into account) compared favorably to approximately the 50th percentile of our peer group.

Meridian did not express an opinion on actual bonus compensation, indicating that deviations from target bonus compensation are often made based on company and individual performance. Although our compensation committee consulted with Meridian during the year regarding general compensation trends and related matters, the committee did not request that Meridian update the peer group data or provide other material advice in making compensation decisions for 2014.

The members of the compensation committee are, after inquiry with Meridian, not aware of any affiliation or relationship between Meridian or any of its employees and any of our or ATLS’ management, nor do we or they retain Meridian to provide other services. This was a critical factor in our compensation committee’s selection of Meridian to provide consulting services. In addition, we have a code of business conduct and ethics, as well as a related party transaction policy, which governs potential conflicts of interest. Our directors and officers also complete questionnaires, which would allow us to review whether there are any potential conflicts as a result of personal or business relationships with Meridian.

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Elements of our Compensation Program

Our executive officer compensation package includes a combination of cash and long-term incentive compensation. Cash compensation is comprised of base salary plus short-term cash incentive (bonus) compensation. Long-term incentives consist of a variety of equity awards. Both the annual and long-term incentives may be performance-based.

Base Salary

Base salary is intended to provide fixed compensation to the NEOs for their performance of core duties that contributed to our success. Base salaries are not intended to compensate individuals for extraordinary performance or for above average company performance.

Annual Incentives

Annual incentives are intended to tie a significant portion of each of our NEO’s compensation to our performance, as well as their individual performance. Generally, the higher the level of responsibility of the executive, the greater is the incentive component of that executive’s target compensation. Although the compensation committee may recommend awards of performance-based bonuses, our annual incentive compensation is generally discretionary in nature. Our annual incentive compensation has typically been paid in cash.

Our compensation committee may, based on recommendations of management, annually establish target bonuses for members of our management team, unless otherwise provided in their respective employment agreements. For 2014, the compensation committee established target bonus amounts, as a percentage of base salary, as follows:

Name	2014 Target Bonus
Eugene N. Dubay		100	%
Patrick J. McDonie		100	%
Robert W. Karlovich, III		100	%

The target bonuses may be decreased, increased or not paid at all, in the discretion of the compensation committee, based on quantitative and qualitative factors, as determined from time-to-time by the compensation committee. Generally, these factors are intended to align short-term incentives with our financial performance and the resulting benefits to our unitholders, as well as recognize individual performance in contributing to these goals.

Long-Term Incentives

The compensation committee believes our long-term success depends upon aligning our executives’ and unitholders’ interests. To support this objective, we provide our executives with various means to become significant equity holders, including awards under our 2004 Long-Term Incentive Plan (the “2004 LTIP”) and our 2010 Long-Term Incentive Plan (the “2010 LTIP”), which we collectively refer to as our Plans. The compensation committee recommends grants of equity awards in the form of options and/or phantom units. The phantom units under our Plans generally vest over four years (subject, in the appropriate case, to accelerated vesting as outlined under the description of our plans). There are no option awards currently outstanding under our Plans.

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Our NEOs are also eligible to receive awards under the ATLS long-term incentive plans, which we refer to as the ATLS Plans and under the long-term incentive plan adopted by Atlas Resource Partners, L.P., an ATLS subsidiary (NYSE: ARP) (“ARP”).

ATLS Performance-Based Bonuses

ATLS has an Annual Incentive Plan for Senior Executives, which we refer to as the Senior Executive Plan, to award bonuses for achievement of predetermined performance objectives during a 12-month performance period, generally ATLS’s and our fiscal year. Awards under the Senior Executive Plan may be paid in cash or in a combination of cash and time-vesting equity of ATLS. A portion of the cash amount awarded to our participating NEOs is allocated to us.

During 2014, the ATLS compensation committee approved 2014 bonus awards to be paid from a bonus pool equal to a maximum of 18.3% of ATLS’s distributable cash flow. One of two goals for 2014 had to be met before any bonuses would be paid:

• at least 80% of the average distributable cash flow allocable to ATLS for the past three years; and

• at least 80% of the average production volumes (which for ATLS means production volumes and for us means gathered volumes) for the past three years.

The goals are set early in the year, but actual awards are ultimately determined by the ATLS compensation committee’s year-end evaluation that also evaluates other factors as set forth below. While the ATLS compensation committee has the discretion to make awards even if one of the goals is not met, it does not anticipate doing so absent exceptionally rare circumstances justifying the payment of a bonus. In the event that distributable cash flow includes any capital transaction gains in excess of $50 million, then only 10% of that excess is included in the bonus pool. Distributable cash flow means the sum of (i) cash available for distribution by ATLS, including the distributable cash flow of any of its subsidiaries (including our company), regardless of whether such cash is actually distributed, plus (ii) to the extent not otherwise included in distributable cash flow, any realized gain on the sale of securities, including securities of a subsidiary, less (iii) to the extent not otherwise included in distributable cash flow, any loss on the sale of securities, including securities of a subsidiary. A return of ATLS’s capital investment in a subsidiary was not intended to be included and, accordingly, if distributable cash flow included proceeds from the sale of all or substantially all of the assets of a subsidiary, the amount of such proceeds to be included in distributable cash flow would be reduced by ATLS’s basis in the subsidiary.

The maximum award, expressed as a percentage of ATLS’s estimated 2014 distributable cash flow, for each of our NEO participants was as follows: Mr. E. Cohen – 3.40% ($15,600,000) and Mr. J. Cohen – 3.00% ($13,700,000).

Pursuant to the terms of the Senior Executive Plan, the ATLS compensation committee has discretion to recommend reductions, but not increases, in maximum awards under the Senior Executive Plan. In making its decisions, the committee considers factors, including growth of reserves, growth in production, processing and intake of natural gas, total market and distribution return to ATLS’s unitholders, and health and safety performance.

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Post-Termination Compensation

ATLS entered into employment agreements with Messrs. E. Cohen, J. Cohen, and Dubay that, among other things, provide compensation upon termination of their employment by reason of death or disability, by ATLS without cause or by each of them for good reason. In addition, we (along with ATLS) entered into an employment agreement with Mr. McDonie that provides compensation in the event of his termination for similar reasons. See “—Employment Agreements and Potential Payments Upon Termination or Change of Control.”

The rationale of ATLS’ compensation committee (and our compensation committee, with respect to Mr. McDonie) behind the design of the provisions for termination by the executive for “good reason” is as follows:

• Determination of Triggering Events—The ATLS compensation committee (and our compensation committee, with respect to Mr. McDonie) elected not to include a change of control of ATLS or us as a good reason triggering event and instead limited the triggering events to those (including after a change of control) where his position with ATLS or us, as the case may be, changes substantially and is essentially an involuntary termination.

• Benefit Multiple—The ATLS compensation committee determined the benefit multiple, that is, the cash severance amount based on each executive’s salary and bonus, after consideration of comparable market practices provided to the committee by Mercer. Our compensation committee determined the benefit multiple during negotiations with Mr. McDonie based on the similar benefits provided by his previous employer. Our compensation committee believes the benefit multiple is consistent with terms generally available in our industry.

Perquisites

We provide limited perquisites to our NEOs at the discretion of our compensation committee. In 2014, these benefits were limited to providing a car allowance to Mr. McDonie and reimbursement of club membership dues for Mr. Karlovich.

Determination of 2014 Compensation Amounts

Base Salary

Our compensation committee has not yet acted on any changes in base salaries for our NEOs. At this time, the base salaries for our NEOs have not changed from their base salaries in 2014. The base salaries for our NEOs in 2014 were as follows: Mr. Dubay—$500,000, Mr. McDonie—$390,000 and Mr. Karlovich—$340,000.

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Annual Incentives

Our compensation committee awarded the following cash bonuses to our NEOs in recognition of the strategic direction and insight they have provided with respect to our executive management, financing activities and growth opportunities: Mr. Dubay—$1,000,000; Mr. Karlovich—$340,000; Mr. E. Cohen—$1,000,000; Mr. J. Cohen—$1,000,000; and Mr. McDonie—$395,000. The compensation committee also made phantom unit awards to our NEOs as described below.

Long-Term Incentives

In February, 2014, our compensation committee made awards of our phantom units (with DERs) as follows: 50,000 phantom units to each of Messrs. E. Cohen, J. Cohen and Dubay, 20,000 phantom units to Mr. McDonie and 15,000 phantom units to Mr. Karlovich. The units were to vest ratably over three years but, as a result of the Merger, will be cancelled and converted into a right to other consideration as described under “ –After the Merger.” Our compensation committee determined that competition for experienced personnel, particularly from private equity firms, had substantially increased and the awards were necessary to insure the continued services of our NEOs.

In June 2014, for reasons similar to those outlined in the preceding paragraph, our compensation committee made awards of our phantom units (with DERs) as follows: 20,000 phantom units to each of Messrs. E. Cohen, J. Cohen, Dubay, McDonie and Karlovich. The awards were to vest 25% on each anniversary of the grant but, as a result of the Merger, will be cancelled and converted into a right to other consideration as described under “–After the Merger.”

ATLS Performance-Based Bonuses

After the end of its 2014 fiscal year, the ATLS compensation committee considered incentive awards pursuant to the Senior Executive Plan based on the year’s performance. The committee confirmed that ATLS had achieved both of the performance goals established for the Senior Incentive Plan. Although the Compensation Committee recognized the NEOs continued strong performance, it took into account the current challenging state of the industry and the year’s negative return to unitholders and decided to sharply reduce bonus payments from those paid in the prior year and make awards that were, on average, 68% less than the total amount of the 2013 awards, far below the maximum level for any of the NEOs.

At this time, in view of evolving corporate governance standards, the ATLS compensation committee decided to continue to implement a compensation strategy that is weighted toward providing variable compensation (bonus and equity awards) versus fixed salaries. This was consistent with the approach the committee took in 2013. The portion of the cash awards allocated to us was as follows: Mr. E. Cohen – $700,000 and Mr. J. Cohen – $700,000.

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Retention Program

Under the Atlas Merger Agreements, we are permitted to establish a cash-based retention program in an aggregate amount no greater than $10 million for employees that continue to work for us and identified by the Executive Committee of ATLS. Awards under the program will vest on the closing date of the Merger, subject to the award recipient’s continued employment through that date. Mr. McDonie was awarded $500,000 under this program.

After the Merger

In connection with the Merger, our and ATLS outstanding equity awards held by our employees generally, including our Named Executive Officers, will be treated as follows:

• ATLS equity awards will be cancelled and converted into TRC restricted stock or settled for cash and/or ATLS merger consideration.

• Our equity awards will be cancelled and converted into a right to receive: with respect to persons who become Atlas Energy Group employees, including Messrs. Cohen, the APL merger consideration, and with respect to persons who remain our employees, including Messrs. Dubay, McDonie and Karlovich, (1) the APL Cash Consideration in respect of each common unit underlying the phantom unit award and (2) a TRP phantom unit award with respect to a number of TRP units (rounded to the nearest whole unit) equal to the product of (a) number of our common units underlying the phantom unit award, multiplied by (b) the APL Unit Consideration. Each TRP phantom unit award will settle in TRP units upon vesting.

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The following tables set forth the compensation allocation to us for fiscal years 2014, 2013 and 2012 for our General Partner’s CEO, CFO and each of our other most highly compensated executive officers whose allocated aggregate salary and bonus (including amounts of salary and bonus foregone to receive non-cash compensation) exceeded $100,000. As required by SEC guidance, the tables also disclose awards under the ATLS Plans.

SUMMARY COMPENSATION TABLE

Name and Principal Position	Year		Salary		Bonus		Stock Awards(1)		Non-Equity Incentive Plan Compensation(2)		All Other Compensation			Total
Eugene N. Dubay,		2014	$	500,000	$	1,000,000	$	4,026,800	$	—	$	547,754	(3)	$	6,074,554
CEO		2013		500,000		—		1,975,500		—		388,638			2,864,138
		2012		500,000		1,500,000		3,498,000		—		440,792			5,938,792
Robert W. Karlovich,		2014		338,846		340,000		2,492,500		—		245,220	(4)		3,416,567
III, CFO		2013		309,077		—		1,280,700		—		174,614			1,764,391
		2012		286,000		585,000		699,600		—		163,996			1,734,596
Edward E. Cohen,		2014		350,000		1,000,000		2,229,600		700,000		371,819	(6)		4,651,419
Executive Chairman		2013		350,000		—		1,975,500		420,000		272,991			3,018,491
of the Managing Board(5)		2012		98,577		1,000,000		3,498,000		302,500		206,097			5,105,174
Jonathan Z. Cohen,		2014		245,000		1,000,000		2,229,600		700,000		370,831	(7)		4,545,431
Executive Vice Chairman		2013		245,000		—		1,975,500		420,000		272,000			2,912,500
of the Managing Board (5)		2012		82,000		1,000,000		3,498,000		351,000		198,930			5,129,930
Patrick J. McDonie,		2014		394,231		395,000		2,647,500		—		355,898	(8)		3,792,629
President and COO		2013		374,039		—		2,166,300		—		252,250			2,792,589
		2012		156,154		600,000		2,997,000		—		93,617			3,846,771

(1) The amounts reflect the grant date fair value of the phantom units under our Plans and the ATLS Plans. The grant date fair value was determined based on the market value on the grant date of our units and ATLS’ units. See “Item 8. Financial Statements and Supplementary Data –Note 12” for further discussion regarding assumptions made in valuation of fair value.

(2) The amounts in this column reflect payments under the ATLS Senior Executive Plan, which were allocated to us.

(3) Comprised of payments on DERs of $176,356 with respect to the phantom units awarded under the ATLS Plans, DERs of $370,525 with respect to the phantom units awarded under our Plans and imputed income on long-term disability benefits.

(4) Comprised of payments on DERs of $66,594 with respect to the phantom units awarded under the ATLS Plans, DERs of $172,700 with respect to the phantom units awarded under our Plans, country club membership dues and imputed income on long-term disability benefits.

(5) Cash amounts for Messrs. E. Cohen and J. Cohen reflect only the portion of compensation allocated to us. Stock awards only include grants under our Plans.

(6) Comprised of payments on DERs of $370,525 with respect to the phantom units awarded under our Plans, our allocated portion of tax, title and insurance premiums for Mr. E. Cohen’s automobile and our allocated portion of imputed income on long-term disability benefits.

(7) Comprised of payments on DERs of $370,525 with respect to the phantom units awarded under our Plans and our allocated portion of imputed income on long-term disability benefits.

(8) Comprised of payments on DERs of $107,500 with respect to the phantom units awarded under the ATLS Plans, DERs of $238,525 with respect to the phantom units awarded under our Plans, car allowance of $9,000 and imputed income on long-term disability benefits.

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GRANTS OF PLAN-BASED AWARDS

	Estimated Possible Payments Under Non-Equity Incentive Plan Awards(1)			All Other Stock Awards:
Name	Threshold ($)	Target ($)	Maximum ($)	Grant Date	Number of Shares of Stock or Units	Grant Date Fair Value of Unit Awards(2)
Eugene N. Dubay	N/A	N/A	N/A	2/18/2014	50,000 (3)	$	1,550,000
				6/26/2014	40,000 (4)		1,797,200
				6/28/2014	20,000 (5)		679,600
Robert W. Karlovich, III	N/A	N/A	N/A	2/18/2014	15,000 (6)		465,000
				6/26/2014	30,000 (7)		1,347,900
				6/28/2014	20,000 (5)		679,600
Edward E. Cohen	N/A	N/A	15,600,000	2/18/2014	50,000 (3)		1,550,000
				2/18/2014	109,589 (8)		4,799,998
				6/26/2014	240,000 (9)		10,783,200
				6/28/2014	20,000 (5)		679,600
Jonathan Z. Cohen	N/A	N/A	13,700,000	2/18/2014	50,000 (3)		1,550,000
				2/18/2014	98,174 (10)		4,300,021
				6/26/2014	240,000 (9)		10,783,200
				6/28/2014	20,000 (5)		679,600
Patrick J. McDonie	N/A	N/A	N/A	2/18/2014	20,000 (11)		620,000
				6/26/2014	30,000 (7)		1,347,900
				6/28/2014	20,000 (5)		679,600

(1) Represents performance-based bonuses under ATLS’ Senior Executive Plan, as discussed under “Compensation Discussion and Analysis—Elements of our Compensation Program—ATLS Performance-Based Bonuses”.

(2) The grant date fair value was calculated in accordance with FASB ASC Topic 718.

(3) Represents phantom units granted under our 2010 LTIP, which vest as follows: 02/18/15–16,500; 02/18/16–16,500; and 02/18/17–17,000.

(4) Represents phantom units granted under the ATLS 2010 Plan, which vest as follows: 06/26/15–10,000; 06/26/16–10,000; 06/26/17–10,000; and 06/26/18–10,000.

(5) Represents phantom units granted under our 2010 LTIP, which vest as follows: 06/28/15–5,000; 06/28/16–5,000; 06/28/17–5,000; and 06/28/18–5,000.

(6) Represents phantom units granted under our 2010 LTIP, which vest as follows: 02/18/15–4,950; 02/18/16–4,950; and 02/18/17–5,100.

(7) Represents phantom units granted under the ATLS 2006 Plan, which vest as follows: 06/26/15–7,500; 06/26/16–7,500; 06/26/17–7,500; and 06/26/18–7,500.

(8) Represents phantom units granted under the ATLS 2006 Plan, which vest as follows: 02/18/15–54,794 and 02/18/16–54,794. Phantom units granted to Mr. E. Cohen under the ATLS Plans are not allocated to us and are not included in the Summary Compensation Table.

(9) Represents phantom units granted under the ATLS 2010 Plan, which vest as follows: 06/26/15–60,000; 06/26/16–60,000; 06/26/17–60,000; and 06/26/18–60,000. Phantom units granted to Mr. E. Cohen and Mr. J. Cohen under the ATLS Plans are not allocated to us and are not included in the Summary Compensation Table.

(10) Represents phantom units granted under the ATLS 2006 Plan, which vest as follows: 02/18/15–49,087 and 02/18/16–49,087. Phantom units granted to Mr. J. Cohen under the ATLS Plans are not allocated to us and are not included in the Summary Compensation Table.

(11) Represents phantom units granted under our 2010 LTIP, which vest as follows: 02/18/15–6,600; 02/18/16–6,600; and 02/18/17–6,800.

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Employment Agreements and Potential Payments Upon Termination or Change of Control

Terms Used

“Good reason” is defined in the following employment agreements as:

• a material reduction in base salary;

• a demotion from his position;

• a material reduction in duties, and for Messrs. E. Cohen, J. Cohen, and Dubay, it being deemed such a material reduction if ATLS ceases to be a public company unless it becomes a subsidiary of a public company and,

• in the case of Mr. E. Cohen, he becomes the chief executive officer of the public parent immediately following the applicable transaction;

• in the case of Mr. J. Cohen, he becomes an executive officer of the public parent with responsibilities substantially equivalent to his previous position immediately following the applicable transaction;

• in the case of Mr. Dubay, the CEO or the Chairman of ATLS’s general partner’s board is not its CEO or the CEO of ATLS or the acquiring entity;

• the executive is required to relocate to a location more than 35 miles from the executive’s previous location, or 50 miles from Tulsa, Oklahoma in the case of Mr. McDonie;

• in the case of Mr. E. Cohen and Mr. J. Cohen, ceasing to be elected to ATLS’s board; or

• in the case of Messrs. E. Cohen, J. Cohen and Dubay, any material breach of the agreement.

“Cause” is defined in Mr. E. Cohen and Mr. J. Cohen’s employment agreements as:

• Mr. Cohen is convicted of a felony, or any crime involving fraud or embezzlement;

• Mr. Cohen intentionally and continually fails to perform his reasonably assigned duties (other than as a result of disability), which failure is materially and demonstrably detrimental to ATLS and has continued for 30 days after written notice signed by a majority of the independent directors of ATLS’s general partner; or

• Mr. Cohen is determined, through arbitration, to have materially breached the restrictive covenants in the agreement.

“Cause” is defined in Mr. Dubay and Mr. McDonie’s employment agreements as:

• in the case of Mr. Dubay, executive has committed any demonstrable and material fraud;

• in the case of Mr. Dubay, illegal or gross misconduct that is willful and results in damage to our business or reputation, and in the case of Mr. McDonie, willful misconduct which cases material harm to us or our affiliates or their business reputations, including due to adverse publicity;

• in the case of Mr. Dubay, executive is charged with a felony, and in the case of Mr. McDonie, the commission of a felony or crime of moral turpitude;

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• in the case of Mr. Dubay, failure to substantially perform his duties (other than as a result of disability) after written demand and a reasonable opportunity to cure, and in the case of Mr. McDonie, willful and continued failure to perform material duties (other than as a result of a disability);

• in the case of Mr. McDonie, the commission of any act of malfeasance or wrongdoing against our company or affiliates;

• in the case of Mr. Dubay, failure to follow reasonable written instructions which are consistent with his duties, and in the case of Mr. McDonie, material breach of any of our policies or procedures; or

• in the case of Mr. McDonie, material breach of his obligations under any agreement entered into with us or our affiliates.

The Merger and separation from ATLS will constitute a termination for good reason by Messrs. Cohen and Dubay under their employment agreements.

Edward E. Cohen

Effective May 16, 2011, ATLS entered into an employment agreement with Mr. Cohen to secure his service as President and Chief Executive Officer. The agreement has a term of three years, which automatically renews daily, unless terminated before the expiration of the term pursuant to the termination provisions of the agreement. As discussed above under “Compensation Discussion and Analysis,” ATLS allocates a portion of Mr. Cohen’s compensation cost to us based on an estimate of the time spent by Mr. Cohen on our activities. In addition, ATLS adds 50% to the compensation amount allocated to us to cover the costs of health insurance and similar benefits.

The agreement provides for an initial annual base salary of $700,000, which may be increased at the discretion of the board of directors of ATLS’ general partner. Mr. Cohen is entitled to participate in any short-term and long-term incentive programs and health and welfare plans and receive perquisites and reimbursement of business expenses, in each case as provided by ATLS for its senior level executives generally. During the term of the agreement, ATLS must maintain a term life insurance policy on Mr. Cohen’s life, which provides a death benefit of $3.0 million, which can be assumed by Mr. Cohen upon a termination of employment.

The agreement provides the following benefits in the event of a termination of employment:

• Upon termination of employment due to death, all equity awards held by Mr. Cohen accelerate and vest in full upon the later of the termination of employment or six months after the date of grant of the awards (“Acceleration of Equity Vesting”), and Mr. Cohen’s estate is entitled to receive, in addition to payment of all accrued and unpaid amounts of base salary, vacation, business expenses and other benefits (“Accrued Obligations”), a pro-rata bonus for the year of termination, based on the actual bonus that would have been earned had the termination of employment not occurred, determined and paid consistent with past practice (the “Pro-Rata Bonus”).

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• ATLS may terminate Mr. Cohen’s employment if he has been unable to perform the material duties of his employment for 180 days in any 12-month period because of physical or mental injury or illness, but ATLS is required to pay his base salary until it acts to terminate his employment. Upon termination of employment due to disability, Mr. Cohen will receive the Accrued Obligations, all amounts payable under ATLS’ long-term disability plans, three years’ continuation of group term life and health insurance benefits (or, alternatively, ATLS may elect to pay executive cash in lieu of such coverage in an amount equal to three years’ healthcare coverage at COBRA rates and the premiums ATLS would have paid during the three-year period for such life insurance) (such coverage, the “Continued Benefits”), Acceleration of Equity Vesting, and the Pro-Rata Bonus.

• Upon termination of employment by ATLS without cause or by Mr. Cohen for good reason, Mr. Cohen will be entitled to either (i) if he does not execute and not revoke a release of claims against ATLS, payment of the Accrued Obligations, or (ii), in addition to payment of the Accrued Obligations, if he executes and does not revoke a release of claims against ATLS, (A) a lump-sum cash payment in an amount equal to three times his average compensation (which is defined as the sum of (1) his annualized base salary in effect immediately before the termination of employment plus (2) the average of the bonuses earned for the three years preceding the year in which the termination occurs, (B) Continued Benefits, (C) the Pro-Rata Bonus, and (D) Acceleration of Equity Vesting.

• Upon a termination by ATLS for cause or by Mr. Cohen without good reason, he is entitled to receive payment of the Accrued Obligations.

In connection with a change of control, any “excess parachute payments” (within the meaning of Section 280G of the Internal Revenue Code) otherwise payable to Mr. Cohen will be reduced such that the total payments to the executive, which are subject to Internal Revenue Code Section 280G are no greater than the Section 280G “safe harbor amount” if he would be in a better after-tax position as a result of such reduction.

We anticipate that lump sum termination amounts paid to Mr. Cohen would be allocated to us consistent with past practice and, with respect to payments based on more than one year of compensation, would be allocated to us based on the average amount of time Mr. Cohen devoted to our activities during the applicable period. The following table provides an estimate of the value of the benefits to Mr. Cohen, which would have been allocated to us if a termination event had occurred as of December 31, 2014.

Reason for Termination	Lump Sum Severance Payment			Benefits(1)		Accelerated Vesting of Equity Awards(2)
Death	$	—		$	—	$	4,293,450
Disability		—			19,951		4,293,450
Termination by us without cause or by Mr. Cohen for good reason		8,775,720	(3)		19,951		4,293,450
Change of control		8,775,720	(3)		19,951		4,293,450

(1) Dental and medical benefits were calculated using 2014 COBRA rates.

(2) Represents the value of unvested unit awards granted under our 2010 LTIP disclosed in the “Outstanding Equity Awards at Fiscal Year-End Table.” The payments relating to awards are calculated by multiplying the number of accelerated units by the closing price of the applicable unit on December 31, 2014.

(3) Calculated based on Mr. Cohen’s current base salary plus the applicable bonus.

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Jonathan Z. Cohen

Effective May 16, 2011, ATLS entered into an employment agreement with Mr. Cohen to secure his service as Chairman of the Board. The agreement has a term of three years, which automatically renews daily, unless terminated before the expiration of the term pursuant to the termination provisions of the agreement. As discussed above under “Compensation Discussion and Analysis,” ATLS allocates a portion of Mr. Cohen’s compensation cost based on an estimate of the time spent by Mr. Cohen on our activities. In addition, ATLS adds 50% to the compensation amount allocated to us to cover the costs of health insurance and similar benefits.

The agreement provides for an initial annual base salary of $500,000, which may be increased at the discretion of the board of directors of ATLS’ general partner. Mr. Cohen is entitled to participate in any short-term and long-term incentive programs and health and welfare plans of ATLS and receive perquisites and reimbursement of business expenses, in each case as provided by ATLS for our senior level executives generally. During the term of the agreement, ATLS must maintain a term life insurance policy on Mr. Cohen’s life, which provides a death benefit of $2 million, which can be assumed by Mr. Cohen upon a termination of employment.

The agreement provides the same benefits in the event of a termination of employment as described above in Mr. E. Cohen’s employment agreement summary.

In connection with a change of control, any “excess parachute payments” (within the meaning of Section 280G of the Internal Revenue Code) otherwise payable to Mr. Cohen will be reduced such that the total payments to the executive, which are subject to Internal Revenue Code Section 280G are no greater than the Section 280G “safe harbor amount” if he would be in a better after-tax position as a result of such reduction.

We anticipate that lump sum termination amounts paid to Mr. Cohen would be allocated to us consistent with past practice and, with respect to payments based on more than one year of compensation, would be allocated to us based on the average amount of time Mr. Cohen devoted to our activities during the applicable period. The following table provides an estimate of the value of the benefits to Mr. Cohen, which would have been allocated to us if a termination event had occurred as of December 31, 2014.

Reason for Termination	Lump Sum Severance Payment			Benefits(1)		Accelerated Vesting of Equity Awards(2)
Death	$	—		$	—	$	4,293,450
Disability		—			29,234		4,293,450
Termination by us without cause or by Mr. Cohen for good reason		8,023,221	(3)		29,234		4,293,450
Change of control		8,023,221	(3)		29,234		4,293,450

(1) Dental and medical benefits were calculated using 2014 COBRA rates.

(2) Represents the value of unvested unit awards granted under our 2010 LTIP disclosed in the “Outstanding Equity Awards at Fiscal Year-End Table.” The payments relating to awards are calculated by multiplying the number of accelerated units by the closing price of the applicable unit on December 31, 2014.

(3) Calculated based on Mr. Cohen’s current base salary plus the applicable bonus.

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Eugene N. Dubay

On November 4, 2011, ATLS entered into an employment agreement with Mr. Dubay. Under the agreement, Mr. Dubay has the title of Senior Vice-President of the Midstream Operations division of Atlas Energy, GP. The agreement has an initial term of two years, which automatically renews for successive one-year terms unless earlier terminated pursuant to the termination provisions of the agreement.

The agreement provides for an initial annual base salary of $500,000, and Mr. Dubay is entitled to participate in any short-term and long-term incentive programs and health and welfare plans and receive perquisites and reimbursement of business expenses, in each case as provided by ATLS for its senior executives generally.

The agreement provides the following benefits in the event of a termination of Mr. Dubay’s employment:

• Upon a termination by ATLS for cause or by Mr. Dubay without good reason, he is entitled to receive payment of accrued but unpaid base salary and (to the extent required to be paid under company policy) amounts of accrued but unpaid vacation, in each case through the date of termination (together, the “Accrued Obligations”).

• Upon a termination of employment due to death or disability (defined as Mr. Dubay being physically or mentally disabled for 180 days in the aggregate or 90 consecutive days during any 365-day period and the determination by ATLS’ general partner’s board of directors, in good faith based upon medical evidence, that he is unable to perform his duties), all equity awards held by Mr. Dubay accelerate and vest in full upon such termination (“Acceleration of Equity Vesting”), and Mr. Dubay or his estate is entitled to receive, in addition to payment of all Accrued Obligations, an amount equal to the cash bonus earned by him for the prior fiscal year multiplied by a fraction, the numerator of which is the number of days in the fiscal year in which his termination occurs through the date of termination, and the denominator of which is the total number of days in such fiscal year (the “Pro-Rata Bonus”).

• Upon a termination of employment by ATLS without cause (which, for purposes of the “Acceleration of Equity Vesting” includes a non-renewal of the agreement) or by Mr. Dubay for good reason, he is entitled to either:

• if he does not timely execute (or revokes) a release of claims against ATLS, payment of the Accrued Obligations; or

• in addition to payment of the Accrued Obligations, if he timely executes and does not revoke a release of claims against ATLS:

• monthly cash severance installments each in an amount equal to one-twelfth of the sum of his then-current (i) annual base salary and (ii) the annual cash incentive bonus earned by him in respect of the fiscal year preceding the fiscal year in which his termination of employment occurs for the portion of the employment term remaining after the date of termination, payable for the then-remaining portion of the employment term (taking into account any applicable renewal term) assuming his termination had not occurred,

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• healthcare continuation at active employee rates for the then-remaining portion of the employment term (taking into account any applicable renewal term) assuming his termination had not occurred,

• a prorated amount in respect of the cash bonus granted to him in respect of the fiscal year in which his termination of employment occurs based on actual performance for such year, calculated as the product of (x) the amount which would have been earned in respect of the award based on actual performance measured at the end of such fiscal year and (y) a fraction, the numerator of which is the number of days in such fiscal year through the date of termination, and the denominator of which is the total number of days in such fiscal year, paid in a lump sum in cash on the date payment would otherwise be made had he remained employed by ATLS, and

• Acceleration of Equity Vesting.

In connection with a change of control of ATLS, any “excess parachute payments” (within the meaning of Section 280G of the Internal Revenue Code) otherwise payable to Mr. Dubay will be reduced such that the total payments to him, which are subject to Section 280G are no greater than the Section 280G “safe harbor amount” if he would be in a better after-tax position as a result of such reduction.

We anticipate that all lump sum termination amounts paid to Mr. Dubay would be allocated to us. The following table provides an estimate of the value of the benefits to Mr. Dubay if a termination event had occurred as of December 31, 2014.

Reason for Termination	Lump Sum Severance Payment			Benefits(1)		Accelerated Vesting of Equity Awards(2)
Death or Disability	$	—		$	—	$	8,445,925
Termination by us without cause or by Mr. Dubay for good reason		422,083	(3)		16,524		8,445,925

(1) Dental and medical benefits were calculated using 2014 COBRA rates for 22 months, which assumes renewal of Mr. Dubay’s employment agreement upon expiration of the initial term in November 2014.

(2) Represents the value of unexercisable option and unvested unit awards disclosed in the “Outstanding Equity Awards at Fiscal Year-End Table.” The payments relating to option awards are calculated by multiplying the number of accelerated options by the difference between the exercise price and the closing price of the applicable units on December 31, 2014. The payments relating to awards are calculated by multiplying the number of accelerated units by the closing price of the applicable unit on December 31, 2014.

(3) Calculated based on Mr. Dubay’s current base salary plus the applicable bonus. Payments would be made in monthly installments for the remaining term of Mr. Dubay’s employment agreement.

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Patrick J. McDonie

On July 3, 2012, ATLS entered into an employment agreement with Mr. McDonie to secure his service as Senior Vice President and Chief Operating Officer of our General Partner. The agreement has a term of two years, commencing as of the effective date of Mr. McDonie’s employment and automatically renews for one year renewal terms unless ATLS gives prior written notice of non-renewal.

The agreement provides for an annual base salary of $350,000 (subject to adjustment at the discretion of ATLS’ and our compensation committees), established Mr. McDonie’s target bonus at 100% of base salary and granted a one-time award of 70,000 of our phantom units and 20,000 phantom units of ATLS. Our phantom units vest 25% per year over 4 years and the ATLS phantom units vest 25% on the third anniversary of the grant and 75% on the fourth anniversary of the grant. Upon vesting, the phantom units automatically convert to common units of the respective issuer. Mr. McDonie is also eligible for: (i) discretionary bonus compensation, which was guaranteed for fiscal 2012 at $200,000; (ii) car allowance and country club dues; (iii) eligibility to receive subsequent grants of equity compensation; and (iv) participation in all employee benefit plans in effect during his employment.

The agreement provides the following benefits in the event of a termination of Mr. McDonie’s employment:

• Upon termination of employment by ATLS without cause or by Mr. McDonie for good reason, Mr. McDonie will receive his base salary paid through the end of the then-current term; (ii) pro-rated cash bonus for the year of termination, based on actual performance for the year; (iii) 100% accelerated vesting of his equity awards; and (iv) monthly severance pay in an amount equal to 1/12 of (x) his annual base salary and (y) the annual amount of cash bonus paid to Mr. McDonie for the fiscal year prior to his year of termination. If Mr. McDonie’s employment is terminated without cause or Mr. McDonie terminates his employment for good reason during the initial term, the monthly severance payments will be made for two years. If Mr. McDonie’s employment is terminated due to a non-renewal for the first renewal period, the monthly severance payments will be made for one year and, if he is terminated thereafter, the monthly severance payments will be made for the unexpired term, as then in effect.

• Upon termination of employment due to death or disability, Mr. McDonie will receive (i) his base salary paid through the termination date; (ii) pro-rated cash bonus for the year of termination, based on the bonus paid for the prior; and (iii) 100% accelerated vesting of his equity awards.

• Upon termination of employment by ATLS for cause or by Mr. McDonie for any reason other than good reason in the first two years of employment, Mr. McDonie is subject to a one year non-competition covenant and will receive his base salary paid through the date of termination.

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We anticipate that all lump sum termination amounts paid to Mr. McDonie would be allocated to us. The following table provides an estimate of the value of the benefits to Mr. McDonie if a termination event had occurred as of December 31, 2014.

Reason for Termination	Lump Sum Severance Payment			Accelerated Vesting of Equity Awards(1)
Death or Disability	$	—		$	4,838,350
Termination by us without cause or by Mr. McDonie for good reason		195,962	(2)		4,838,350

(1) Represents the value of unvested unit awards disclosed in the “Outstanding Equity Awards at Fiscal Year-End Table.” The payments relating to awards are calculated by multiplying the number of accelerated units by the closing price of the applicable unit on December 31, 2014.

(2) Calculated based on Mr. McDonie’s current base salary plus the applicable bonus. Payments would be made in monthly installments for the remaining term of Mr. McDonie’s employment agreement.

Additional Change of Control Payments

Awards granted under our Long-Term Incentive Plans and the ATLS Plans vest following a change of control and/or the occurrence of certain other events, as described below. If these awards had terminated on December 31, 2014, in addition to the accelerated vesting of awards received by Messrs. E. Cohen, J. Cohen, Dubay, and McDonie; Mr. Karlovich would have received accelerated vesting of awards valued at $3,495,652.

Our Long-Term Incentive Plans

Before the Merger

Our Plans provide incentive awards to officers, employees and non-employee managers of our General Partner and officers and employees of our General Partner’s affiliates, consultants and joint venture partners who perform services for us or in furtherance of our business. Our Plans are administered by our General Partner’s managing board or the board of an affiliate designated by it (the “Committee”). Our compensation committee has been designated to serve as the Committee. Under the Plans, the Committee may, among other types of awards available under the 2010 LTIP, make awards of either phantom units or options covering an aggregate of 435,000 common units under the 2004 LTIP and 3,000,000 common units under the 2010 LTIP.

• A phantom unit entitles the grantee to receive a common unit upon the vesting of the phantom unit. In addition, the Committee may grant a participant the right, which we refer to as a DER, to receive cash per phantom unit in an amount equal to, and at the same time as, the cash distributions we make on a common unit during the period the phantom unit is outstanding.

• An option entitles the grantee to purchase our common units at an exercise price determined by the Committee, which may be less than, equal to or more than the fair market value of our common units on the date of grant. The Committee will also have discretion to determine how the exercise price may be paid.

Prior to October 2010, each non-employee board member of our General Partner received an annual grant of a maximum of 500 phantom units, which upon vesting, entitles the grantee to receive the equivalent number of common units or the cash equivalent to the fair market value of the units. The 2004 LTIP was amended by the managing board of our General Partner in February 2010 to increase the pool of phantom units that may be awarded to non-employee board members from 10,000 to 15,000. The total amount of common units that can be awarded under the 2004 Plan was not amended. The Committee will determine the vesting period for phantom units and the exercise period for options. Under the 2004 LTIP,

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phantom units awarded to non-employee board members will generally vest over a 4-year period at the rate of 25% per year. Under the 2004 LTIP, awards will vest upon a change of control, which is defined as follows:

• Atlas Pipeline Partners GP ceasing to be our General Partner;

• a merger, consolidation, share exchange, division or other reorganization or transaction of us, our General Partner or a direct or indirect parent of our General Partner with any entity, other than a transaction, which would result in the voting securities of us, our General Partner or its parent, as appropriate, outstanding immediately prior thereto continuing to represent (either by remaining outstanding or by being converted into voting securities of the surviving entity) at least 60% of the combined voting power immediately after such transaction of the surviving entity’s outstanding securities or, in the case of a division, the outstanding securities of each entity resulting from the division;

• the equity holders of us or a direct or indirect parent of our General Partner approve a plan of complete, liquidation or winding-up or an agreement for the sale or disposition (in one transaction or a series of transactions) of all or substantially all of our or such parent’s assets; or

• during any period of 24 consecutive months, individuals who at the beginning of such period constituted the board of directors of Atlas Pipeline GP or a direct or indirect parent of our General Partner (including for this purpose any new director whose election or nomination for election or appointment was approved by a vote of at least 2/3 of the directors then still in office who were directors at the beginning of such period) cease for any reason to constitute at least a majority of the board or, in the case of a spinoff of the parent, if Edward E. Cohen and Jonathan Z. Cohen cease to be directors of the parent.

Under the 2010 LTIP, unless otherwise specified in the award agreement(s), awards will vest upon a change of control, which (unless otherwise defined in the award) is defined as follows:

• Atlas Pipeline GP or an affiliate ceases to be our general partner;

• consummation of a merger, consolidation, share exchange, division or other reorganization or transaction of us, our General Partner or any affiliate that is a direct or indirect parent of our General Partner with any entity, other than a transaction, which would result in the voting securities of us or our General Partner, as appropriate, outstanding immediately prior thereto continuing to represent (either by remaining outstanding or by being converted into voting securities of the surviving entity) at least 60% of the combined voting power immediately after such transaction of the surviving entity’s outstanding securities or, in the case of a division, the outstanding securities of each entity resulting from the division;

• our equity holders, our General Partner or any affiliate that is a direct or indirect parent of our General Partner approve a plan of complete liquidation or winding-up of us;

• consummation of a sale or disposition (in one transaction or a series of transactions) of all or substantially all of the assets of APL or any affiliate that is a direct or indirect parent of our General Partner to an entity that is not an affiliate of our General Partner or us; or

• during any period of 24 consecutive months, individuals who at the beginning of such period constituted the Board or the board of directors of an affiliate that is a direct or indirect parent of our General Partner (including for this purpose any new director whose election or nomination for election or appointment was approved by a vote of at least 2/3 of the directors then still in office who were directors at the beginning of such period) cease for any reason to constitute at least a majority of the Board or other board of directors, as applicable.

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If a grantee terminates employment, the grantee’s award will be automatically forfeited unless the Committee provides otherwise. However, the award will automatically vest if the reason for the termination is the participant’s death or disability. Common units to be delivered upon vesting of phantom units or upon exercise of options may be newly issued units, units acquired in the open market or from any of our affiliates, or any combination of these sources at the discretion of the Committee. If we issue new common units upon vesting of the phantom units or upon the exercise of options, the total number of common units outstanding will increase. We filed a registration statement with the SEC in order to permit participants to publicly re-sell any common units received by them under the Plans.

The Committee may terminate the Plans at any time with respect to any of the common units for which it has not made a grant. In addition, the Committee may amend the Plans from time to time, including, subject to applicable law or the rules of the principal securities exchange on which our common units are traded, increasing the number of common units with respect to which it may grant awards, provided that, without the participant’s consent, no change may be made in any outstanding grant that would materially impair the rights of the participant. NYSE rules require us to obtain unitholder approval for all material amendments to the Plans, including amendments to increase the number of common units issuable thereunder.

Upon a change in control, as defined in each Plan, all unvested awards held by non-employee managers will vest, except as otherwise specified in the award agreement(s). Upon a change of control, as defined in the 2004 LTIP, all unvested awards held by employees will vest. In the case of awards held by employees under the 2010 LTIP, upon termination of employment without “cause”, as defined in the 2010 LTIP, or upon other circumstances specified in the employee’s applicable award agreement(s), in any case following a change in control, any unvested award will vest and, in the case of options, become exercisable. The Merger will trigger the change of control provisions of our Plans.

ATLS Plans

The ATLS 2006 Long-Term Incentive Plan (the “ATLS 2006 Plan”) and the ATLS 2010 Long-Term Incentive Plan (the “ATLS 2010 Plan” and collectively with the 2006 ATLS Plan, the “ATLS Plans”) provides equity incentive awards to officers, employees and board members and employees of its affiliates, consultants and joint-venture partners who perform services for ATLS. The ATLS Plans are administered by the board of ATLS’ general partner or the board of an affiliate appointed by ATLS’ board (the “ATLS Committee”). The ATLS Committee may grant awards of either phantom units or unit options for an aggregate of 2,100,000 ATLS common limited partner units for the ATLS 2006 Plan and an aggregate of 5,300,000 ATLS common limited partner units for the ATLS 2010 Plan.

Partnership Phantom Units. A phantom unit entitles a participant to receive a common unit upon vesting of the phantom unit. Non-employee directors receive an annual grant of phantom units having a market value of $125,000, which, upon vesting, entitle the grantee to receive the equivalent number of ATLS common units or the cash equivalent to the fair market value of the units. The phantom units vest over four years. In tandem with phantom unit grants, the ATLS Committee may grant a DER. The ATLS Committee determines the vesting period for phantom units. Phantom units granted under the 2006 ATLS Plan generally vest 25% on the third anniversary of the date of grant, with the remaining 75% vesting on the fourth anniversary of the date of grant, except non-employee director grants vest 25% per year.

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Partnership Unit Options. A unit option entitles a participant to receive a common unit upon payment of the exercise price for the option after completion of vesting of the unit option. The exercise price of the unit option may be equal to or more than the fair market value of a common unit as determined by the ATLS Committee on the date of grant of the option. The ATLS Committee determines the vesting and exercise period for unit options. Unit option awards expire 10 years from the date of grant. Unit options granted under the 2006 ATLS Plan generally will vest 25% on the third anniversary of the date of grant, with the remaining 75% vesting on the fourth anniversary of the date of grant.

Partnership Restricted Units. Under the ATLS 2010 Plan, a restricted unit is a common unit issued that entitles a participant to receive it upon vesting of the restricted unit. Prior to or upon grant of an award of restricted units, the ATLS Committee will condition the vesting or transferability of the restricted units upon continued service, the attainment of performance goals or both.

Upon a change in control, as defined in the ATLS 2010 Plan, all unvested awards held by directors will immediately vest in full. In the case of awards held by eligible employees, upon the eligible employee’s termination of employment without “cause”, as defined in the ATLS Plans, or upon any other type of termination specified in the eligible employee’s applicable award agreement(s), in any case following a change in control, any unvested award will immediately vest in full and, in the case of options, become exercisable for the one-year period following the date of termination of employment, but in any case not later than the end of the original term of the option. The ATLS Merger will trigger the change of control provisions of the ATLS Plans.

After the Merger

Our Plans and the ATLS Plans will terminate as a result of the Mergers, and equity awards outstanding immediately before the Mergers will be treated as described under “Compensation Discussion and Analysis—After the Merger.”

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The following tables disclose outstanding awards and awards vested and exercised under our Plans as well as under the ATLS and ARP Plans:

OUTSTANDING EQUITY AWARDS AT FISCAL YEAR-END TABLE

	Option Awards										Stock Awards
Name	Number of Securities Underlying Unexercised Options						Option Exercise Price		Option Expiration Date		Number of Units that have not Vested			Market Value of Units that have not Vested(1)
	Exercisable			Unexercisable
Eugene N. Dubay		27,191	(2)		81,574	(3)	$	20.44		3/25/2021		105,259	(4)	$	3,278,818
		—			—							157,500	(5)		4,293,450
Robert W. Karlovich, III		2,719	(2)		8,157	(6)		20.44		3/25/2021		48,157	(7)		1,500,091
		—			—							70,000	(8)		1,908,200
Edward E. Cohen		543,825	(2)		—			20.75		11/10/2016		—			—
		190,338	(2)		571,017	(9)		20.44		3/25/2021		625,832	(10)		19,494,667
		—			—							157,500	(5)		4,293,450
		175,000	(11)		175,000	(12)		24.67		5/15/2022		75,000	(13)		802,500
Jonathan Z. Cohen		217,530	(2)		—			20.75		11/10/2016		—			—
		135,956	(2)		407,869	(14)		20.44		3/25/2021		570,126	(15)		17,759,425
		—			—							157,500	(5)		4,293,450
		175,000	(11)		175,000	(12)		24.67		5/15/2022		75,000	(13)		802,500
Patrick J. McDonie		—			—			N/A		N/A		70,000	(16)		2,180,500
		—			—							97,500	(17)		2,657,850

(1) Based on closing market price of our common units on December 31, 2014 of $27.26, price of ATLS common units on December 31, 2014 of $31.15 and price of ARP common units on December 31, 2014 of $10.70.

(2) Represents options to purchase ATLS units.

(3) Represents options to purchase ATLS units, which vest on 03/25/15–81,574.

(4) Represents ATLS phantom units, which vest as follows: 03/25/15–65,259; 6/26/15–10,000, 6/26/16–10,000, 6/26/17–10,000, and 6/26/18–10,000.

(5) Represents our phantom units, which vest as follows: 02/18/15–16,500; 04/26/15–25,000; 06/28/15–5,000; 07/10/15–12,500; 02/18/16–16,500; 04/26/16–25,000; 06/28/16–5,000; 07/10/16–12,500; 02/18/17–17,000; 06/28/17–5,000; 07/10/17–12,500; and 06/28/18–5,000;.

(6) Represents options to purchase ATLS units, which vest on 03/25/15–8,157.

(7) Represents ATLS phantom units, which vest as follows: 03/25/15–8,157; 06/26/15–7,500; 07/16/16–2,500; 06/26/16–7,500; 06/26/17–7,500; 07/16/17–7,500; and 06/26/18–7,500.

(8) Represents our phantom units, which vest as follows: 02/18/15–4,950; 04/26/15–5,000; 06/28/15–5,000; 07/10/15–5,000; 11/04/15–10,000; 02/18/16–4,950; 04/26/16–5,000; 06/28/16–5,000; 07/10/16–5,000; 02/18/17–5,100; 06/28/17–5,000; 07/10/17–5,000; and 06/28/18–5,000.

(9) Represents options to purchase ATLS units, which vest as follows: 03/25/15–571,017.

(10) Represents ATLS phantom units, which vest as follows: 02/04/15–15,760; 02/18/15–54,794; 03/25/15–244,722; 06/26/2015–60,000; 02/04/16–15,761; 02/18/16–54,795; 06/26/2016–60,000; 06/26/2017–60,000; and 06/26/2018–60,000.

(11) Represents options to purchase ARP units.

(12) Represents options to purchase ARP units, which vest as follows: 05/15/15–87,500 and 05/15/16–87,500.

(13) Represents ARP phantom units, which vest as follows: 05/15/15–37,500 and 05/15/16–37,500.

(14) Represents options to purchase ATLS units, which vest on 03/25/15–407,869.

(15) Represents ATLS phantom units, which vest as follows: 02/04/15–14,009; 02/18/15–49,087; 03/25/15–203,934; 06/26/15–60,000; 02/04/16–14,009; 02/18/16–49,087; 06/26/16–60,000; 06/26/17–60,000; and 06/26/18–60,000.

(16) Represents ATLS phantom units, which vest as follows: 06/26/15–7,500; 07/20/15–5,000; 06/26/16–7,500; 07/16/16–5,000; 07/20/16–15,000; 06/26/17–7,500; 07/16/17–15,000; and 06/26/18–7,500.

(17) Represents our phantom units, which vest as follows: 02/18/15–6,600; 06/28/15–5,000; 07/16/15–7,500; 07/20/15–17,500; 02/18/16–6,600; 06/28/16–5,000; 07/16/16–7,500; 07/20/16–17,500; 02/18/17–6,800; 06/28/17–5,000; 07/16/17–7,500; and 06/28/18–5,000.

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2014 OPTION EXERCISES AND STOCK VESTED TABLE

	Unit Awards
Name	Number of Units Acquired on Vesting			Value Realized on Vesting ($)(1)
Eugene N. Dubay		37,500	(2)	$	1,209,500
		21,753	(3)		945,385
Robert W. Karlovich, III		20,000	(2)		677,400
		2,719	(3)		118,168
Edward E. Cohen		37,500	(2)		1,209,500
		97,333	(3)		4,276,899
		37,500	(4)		727,125
Jonathan Z. Cohen		37,500	(2)		1,209,500
		81,987	(3)		3,604,762
		37,500	(4)		727,125
Patrick J. McDonie		25,000	(2)		871,675

(1) Value realized on vesting is based upon market price on date of vesting.

(2) Represents our common units.

(3) Represents ATLS’s common units.

(4) Represents ARP’s common units.

Effective July 1, 2011, ATLS established the ATLS Excess 401(k) Plan, an unfunded nonqualified deferred compensation plan for certain highly compensated employees. The ATLS Excess 401(k) Plan provides Messrs. E. and J. Cohen, the plan’s current participants, with the opportunity to defer, annually, the receipt of a portion of their compensation, and to permit them to designate investment indices for the purpose of crediting earnings and losses on any amounts deferred under the Plan. Messrs. E. and J. Cohen may defer up to 10% of their total annual cash compensation (which means base salary and non-performance-based bonus) and up to 100% of all performance-based bonuses, and we are obligated to match such deferrals on a dollar-for-dollar basis (i.e., 100% of the deferral) up to a total of 50% of their base salary for any calendar year. The account is invested in a mutual fund and cash balances are invested daily in a money market account. ATLS established a “rabbi” trust to serve as the funding vehicle for the ATLS Excess 401(k) Plan and it will, not later than the last day of the first month of each calendar quarter, make contributions to the trust in the amount of the compensation deferred, along with the corresponding match, during the preceding calendar quarter. Notwithstanding the establishment of the rabbi trust, ATLS’s obligation to pay the amounts due under the ATLS Excess 401(k) Plan constitutes a general, unsecured obligation, payable out of its general assets, and Messrs. E. and J. Cohen do not have any rights to any specific asset of the company.

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The ATLS Excess 401(k) Plan has the following additional provisions:

• At the time the participant makes his deferral election with respect to any year, he must specify the date or dates (but not more than two) on which distributions will start, which date may be upon termination of employment or a date that is at least three years after the year in which the amount deferred would otherwise have been earned. A participant may subsequently defer a specified payment date for a minimum of an additional five years from the previously elected payment date. If the participant fails to make an election, all amounts will be distributable upon the termination of employment.

• Distributions will be made earlier in the event of death, disability or a termination of employment due to a change of control.

• If the participant elects to receive all or a portion of his distribution upon the termination of employment, it will be paid in a lump sum. Otherwise, the participant may elect to receive a lump sum payment or equal installments over not more than 10 years.

A participant may request a distribution of all or part of his account in the event of an unforeseen financial emergency. An unforeseen financial emergency is a severe financial hardship due to an unforeseeable emergency resulting from a sudden and unexpected illness or accident of the participant, or, a sudden and unexpected illness or accident of a dependent, or loss of the participant’s property due to casualty, or other similar and extraordinary unforeseeable circumstances arising as a result of events beyond the control of the participant. An unforeseen financial emergency is not deemed to exist to the extent it is or may be relieved through reimbursement or compensation by insurance or otherwise; by borrowing from commercial sources on reasonable commercial terms to the extent that this borrowing would not itself cause a severe financial hardship; by cessation of deferrals under the plan; or by liquidation of the participant’s other assets (including assets of the participant’s spouse and minor children that are reasonably available to the participant) to the extent that this liquidation would not itself cause severe financial hardship.

The table above reflects salary and matching contribution costs allocated to us.

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Director Compensation

2014 DIRECTOR COMPENSATION TABLE

Name	Fees Earned or Paid in Cash			Stock Awards			All Other Compensation(1)		Total
Tony C. Banks	$	125,000	(2)	$	74,979	(3)	$	13,124	$	213,103
Curtis D. Clifford		105,000	(4)		74,987	(5)		12,029		192,016
Gayle P.W. Jackson		75,000			74,989	(6)		13,132		163,121
Martin Rudolph		122,500	(7)		74,970	(8)		13,165		210,635
Michael Staines		65,000			74,989	(9)		11,555		151,544

(1) Represents payments on DERs for phantom units.

(2) Includes $50,000 in cash paid for services Mr. Banks provided for acting as chair of the APL Special Conflicts Committee in connection with the Merger.

(3) Represents 2,255 phantom units having a grant date fair value of $33.25 per unit, granted under our 2010 LTIP. The phantom units vest 25% on each anniversary of the date of grant as follows: 02/11/15–563; 02/11/16–563; 02/11/17–563; and 02/11/18–566.

(4) Includes $30,000 in cash paid for services Mr. Clifford provided for the APL Special Conflicts Committee in connection with the Merger.

(5) Represents 2,373 phantom units having a grant date fair value of $31.60 per unit, granted under our 2010 LTIP. The phantom units vest 25% on each anniversary of the date of grant as follows: 5/10/15–593; 5/10/16–593; 5/10/17–593 and 5/10/18–594.

(6) Represents 2,419 phantom units having a grant date fair value of $31.00 per unit, granted under our 2010 LTIP. The phantom units vest 25% on each anniversary of the date of grant as follows: 2/18/15–604; 2/18/16–604; 02/18/17–604; and 2/18/18–607.

(7) Includes $30,000 in cash paid for services Mr. Rudolph provided for the APL Special Conflicts Committee in connection with the Merger. Also includes a $2,500 cash payment Mr. Rudolph received in 2014 that related to an increase in compensation for his services as chair of the audit committee.

(8) Represents 2,427 phantom units having a grant date fair value of $30.89 per unit, granted under our 2010 LTIP. The phantom units vest 25% on each anniversary of the date of grant as follows: 3/17/15–606; 3/17/16–606; 3/17/17–606 and 3/17/18–609.

(9) Represents 2,153 phantom units having a grant date fair value of $34.83 per unit, granted under our 2010 LTIP. The phantom units vest 25% on each anniversary of the date of grant as follows: 7/01/15–538; 7/01/16–538; 7/01/17–538 and 7/01/18–539.

Our General Partner did not pay additional remuneration to officers or employees of ATLS who also served as managing board members. In February 2013, the ATLS nominating and governance committee approved, effective as of January 1, 2013, annual retainers for non-employee board members comprised of $65,000 in cash and an annual grant of phantom units with DERs issued under our Plans having a fair market value of $75,000. Chairpersons of the compensation committee, conflicts committee and environmental health and safety committee each receive an additional retainer of $10,000 and the chair of the audit committee receives an additional retainer of $25,000.

Our General Partner reimburses each non-employee managing board member for out-of-pocket expenses in connection with attending meetings of the board or committees. We reimburse our General Partner for these expenses and indemnify our General Partner’s managing board members for actions associated with serving as directors to the extent permitted under Delaware law.

195

Compensation Committee Report

The compensation committee has reviewed and discussed the Compensation Discussion and Analysis with management and, based upon its review and discussions, the compensation committee recommended to the board of directors that the Compensation Discussion and Analysis be included in this annual report on Form 10-K for the year ended December 31, 2014.

This report has been provided by the compensation committee of the Board of Directors of Atlas Pipeline Partners GP, LLC.

Tony A. Banks, Chair

Curtis D. Clifford

Martin Rudolph

196

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED UNITHOLDER MATTERS

The following table sets forth the number and percentage of shares of common stock owned, as of February 20, 2015 by (a) each person who, to our knowledge, is the beneficial owner of more than 5% of the outstanding common units, (b) each of the members of the managing board of our General Partner, (c) each of the executive officers named in the Summary Compensation Table in Item 11, and (d) all of the executive officers and board members as a group. This information is reported in accordance with the beneficial ownership rules of the Securities and Exchange Commission under which a person is deemed to be the beneficial owner of a security if that person has or shares voting power or investment power with respect to such security or has the right to acquire such ownership within 60 days. Unless otherwise indicated in footnotes to the table, each person listed has sole voting and dispositive power with respect to the securities owned by such person. The address of our General Partner, its executive officers and managing board members is Park Place Corporate Center One, 1000 Commerce Drive, 4th Floor, Pittsburgh, Pennsylvania 15275-1011.

	Common Unit Amounts and Nature of Beneficial Ownership			Percent of Class
Name of Beneficial Owner
Named Executive Officers and Members of the Managing Board
Eugene N. Dubay		132,418	(1)		*
Edward E. Cohen		173,575	(2)		*
Jonathan Z. Cohen		163,544	(3)		*
Patrick J. McDonie		32,982			*
Robert W. Karlovich, III		61,238	(4)		*
Tony C. Banks		6,869			*
Curtis D. Clifford		3,913			*
Gayle P. W. Jackson		5,163	(5)		*
Martin Rudolph		11,212	(6)		*
Michael L. Staines		13,353			*
Executive officers and Managing Board Members as a group (11 persons)		686,399			*
Other Owners of More than 5% of Outstanding Units
Leon G. Cooperman		7,457,578	(7)		7.5	%

* Less than 1%.

(1) Includes 94,243 units held in trust for the benefit of Mr. Dubay and 37,175 units held in trust for the benefit of Mr. Dubay’s spouse.

(2) Includes 80,100 units held by a partnership, of which Mr. E. Cohen and his spouse are the sole limited partners and the sole shareholders, officers and directors of the corporate general partner, and 10,000 units held in trust for the benefit of Mr. E. Cohen’s spouse.

(3) Includes 105,667 units held jointly with Mr. J. Cohen’s spouse, 33,000 units held in trust for the benefit of Mr. J. Cohen’s children and 10,000 units held in trust for the benefit of Mr. J. Cohen.

(4) Includes 250 units held in trust for the benefit of Mr. Karlovich’s children.

(5) All units held in trust for the benefit of Dr. Jackson.

(6) Includes 1,984 phantom units granted pursuant to our 2004 and 2010 LTIPs, which will vest into common units within 60 days; and 4,832 units held jointly with Mr. Rudolph’s spouse.

(7) This information is based upon a Schedule 13G/A, which was filed with the SEC on January 23, 2015. The address for Mr. Cooperman is 11431 W. Palmetto Park Road, Boca Raton, FL 33431.

197

Equity Compensation Plan Information

The following table contains information about our 2004 LTIP as of December 31, 2014:

Plan category	Number of securities to be issued upon exercise of outstanding options, warrants and rights		Weighted- average exercise price of outstanding options, warrants and rights		Number of securities remaining available for future issuance under equity compensation plans (excluding securities reflected in column (a))
	(a)		(b)		(c)
Equity compensation plans approved by security holders – Phantom units		31,838		n/a
Equity compensation plans approved by security holders – Total		31,838				4,359

The following table contains information about our 2010 LTIP as of December 31, 2014:

Plan category	Number of securities to be issued upon exercise of outstanding options, warrants and rights		Weighted- average exercise price of outstanding options, warrants and rights		Number of securities remaining available for future issuance under equity compensation plans (excluding securities reflected in column (a))
	(a)		(b)		(c)
Equity compensation plans approved by security holders – phantom units		1,652,451		n/a
Equity compensation plans approved by security holders – Total		1,652,451				134,859

198

The following table contains information about the ATLS 2006 Plan as of December 31, 2014:

Plan category	Number of securities to be issued upon exercise of outstanding options, warrants and rights		Weighted- average exercise price of outstanding options, warrants and rights		Number of securities remaining available for future issuance under equity compensation plans (excluding securities reflected in column (a))
	(a)		(b)		(c)
Equity compensation plans approved by security holders – phantom units		781,182		n/a
Equity compensation plans approved by security holders – unit options		939,939	$	20.94
Equity compensation plans approved by security holders – Total		1,721,121				133,951

The following table contains information about the ATLS 2010 Plan as of December 31, 2014:

Plan category	Number of securities to be issued upon exercise of outstanding options, warrants and rights		Weighted- average exercise price of outstanding options, warrants and rights		Number of securities remaining available for future issuance under equity compensation plans (excluding securities reflected in column (a))
	(a)		(b)		(c)
Equity compensation plans approved by security holders – phantom units		2,496,664		n/a
Equity compensation plans approved by security holders – unit options		2,414,545	$	20.53
Equity compensation plans approved by security holders – Total		4,911,209				283,650

199

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE

We do not directly employ any persons to manage or operate our business. These functions are provided by our General Partner and employees of ATLS. Our General Partner does not receive a management fee in connection with its management of our operations, but we reimburse our General Partner and its affiliates for compensation and benefits related to ATLS employees who perform services for us, based upon an estimate of the time spent by such persons on our activities. Other indirect costs, such as rent for offices, are allocated to us by ATLS based on the number of its employees who devote substantially all of their time to our activities. Our partnership agreement provides that our General Partner will determine the costs and expenses that are allocable to us in any reasonable manner determined at its sole discretion. We reimbursed our General Partner and its affiliates $5.1 million for the year ended December 31, 2014 for compensation and benefits related to their employees. Our General Partner believes the method utilized in allocating costs to us is reasonable.

Effective as of April 30, 2009, our General Partner’s conflicts committee adopted a written policy governing related party transactions. For purposes of this policy, a related party includes: (i) any executive officer, director or director nominee; (ii) any person known to be a beneficial owner of 5% or more of our common units; (iii) an immediate family member of any person included in clauses (i) and (ii) (which, by definition, includes, a person’s spouse, parents and parents in law, step parents, children, children in law and stepchildren, siblings and brothers and sisters in law and anyone residing in the that person’s home); and (iv) any firm, corporation or other entity in which any person included in clauses (i) through (iii) above is employed as an executive officer, is a director, partner, principal or occupies a similar position or in which that person owns a 5% or more beneficial interest. With certain exceptions outlined below, any transaction between us and a related party that is anticipated to exceed $120,000 in any calendar year must be approved, in advance, by the conflicts committee. If approval in advance is not feasible, the related party transaction must be ratified by the conflicts committee. In approving a related party transaction the conflicts committee will take into account, in addition to such other factors as the conflicts committee deems appropriate, the extent of the related party’s interest in the transaction and whether the transaction is no less favorable to us than terms generally available to an unaffiliated third party under similar circumstances.

The following related party transactions are pre-approved under the policy: (i) employment of an executive officer to perform services on our behalf (or on behalf of one of our subsidiaries); (ii) compensation paid to directors for serving on the board of Atlas Pipeline GP or any committee thereof; (iii) transactions where the related party’s interest arises solely as a holder of our common units and such interest is proportional to all other owners of common units or a transaction (e.g. participation in health plans) that are available to all employees generally; (iv) a transaction with another company where the related party is only an employee (and not an executive officer), director or beneficial owner of less than 10% of such company’s shares and the aggregate amount involved does not exceed the greater of $1,000,000 or 2% of that firm’s total annual revenues; and (v) any charitable contribution, grant or endowment by us or Atlas Pipeline GP to a charitable organization, foundation or university at which the related party’s only relationship is as an employee (other than an executive officer) or director or similar capacity, if the aggregate amount involved does not exceed the greater of $5,000 or 2% of that organization’s total receipts.

The managing board of our General Partner has determined that Messrs. Curtis Clifford, Tony Banks, Martin Rudolph and Michael Staines and Dr. Gayle Jackson each satisfy the requirement for independence set out in Section 303A.02 of the rules of the NYSE, including those set forth in Rule 10A-3(b)(1) of the Securities Exchange Act, and meet the definition of an independent member set forth in our Partnership Governance Guidelines. In making these determinations, the managing board reviewed information from each of these non-management board members concerning all their respective relationships with us and analyzed the materiality of those relationships.

Relationship with Atlas Resource Partners

We compress and gather gas for Atlas Resource Partners, L.P. (NYSE: ARP) (“ARP”) on our gathering systems located in Tennessee. ARP’s general partner is wholly-owned by ATLS, and two members of our General Partner’s managing board are members of ARP’s board of directors. We entered into an agreement to provide these services, which extends for the life of ARP’s leases, in February 2008. We charged ARP approximately $0.3 million in compression and gathering fees for the year ended December 31, 2014.

200

ITEM 14. PRINCIPAL ACCOUNTANT FEES AND SERVICES

Aggregate fees recognized by us during the years ended December 31, 2014 and 2013 by our principal accounting firm, Grant Thornton LLP, are set forth below:

	2014		2013
Audit fees (1)	$	1,440,250	$	1,531,750
Tax fees (2)		97,211		93,778
All other fees		—		—
Total aggregate fees billed	$	1,537,461	$	1,625,528

(1) Represents the aggregate fees recognized in 2014 and 2013 for professional services rendered by Grant Thornton LLP for the audit of our annual financial statements, the review of financial statements included in Forms 10-Q and the review of registration statements and Forms 8-K.

(2) Represents the fees recognized in each 2014 and 2013 for professional services rendered by Grant Thornton LLP for tax compliance, tax advice, and tax planning.

Audit Committee Pre-Approval Policies and Procedures

Pursuant to its charter, the audit committee of the managing board of our General Partner is responsible for reviewing and approving, in advance, any audit and any permissible non-audit engagement or relationship between us and our independent auditors. All of such services and fees were pre-approved during 2014 and 2013.

201

PART IV

ITEM 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

The following documents are filed as part of this report:

(1) Financial Statements

The financial statements required by this Item 15(a)(1) are set forth in Item 8.

(2) Financial Statement Schedules

No schedules are required to be presented.

(3) Exhibits:

Exhibit No.	Description
1.1	Equity Distribution Agreement, dated May 12, 2014, among Atlas Pipeline Partners, L.P. and Citigroup Global Markets Inc., Wells Fargo Securities, LLC and MLV & Co. LLC(38)
1.2	Underwriting Agreement, dated March 12, 2014, among Atlas Pipeline Partners, L.P. and the underwriters named therein (36)
2.1	Agreement and Plan of Merger, by and among Targa Resources Corp., Trident GP Merger Sub LLC, Atlas Energy, L.P. and Atlas Energy GP, LLC, dated October 13, 2014. The schedules to the Agreement and Plan of Merger have been omitted pursuant to Item 601(b) of Regulation S-K. A copy of the omitted schedules will be furnished to the U.S. Securities and Exchange Commission supplementally upon request(39)
2.2	Agreement and Plan of Merger, by and among Targa Resources Corp., Targa Resources Partners LP, Targa Resources GP LLC, Trident MLP Merger Sub LLC, Atlas Energy, L.P., Atlas Pipeline Partners, L.P. and Atlas Pipeline Partners GP, LLC, dated October 13, 2014. The schedules to the Agreement and Plan of Merger have been omitted pursuant to Item 601(b) of Regulation S-K. A copy of the omitted schedules will be furnished to the U.S. Securities and Exchange Commission supplementally upon request(39)
2.3	Letter Agreement, by and between Atlas Energy, L.P. and Atlas Pipeline Partners, L.P., dated October 13, 2014(39)
3.1(a)	Certificate of Limited Partnership(1)
3.1(b)	Amendment to Certificate of Limited Partnership(12)
3.2(a)	Second Amended and Restated Agreement of Limited Partnership(2)
3.2(b)	Amendment No. 1 to Second Amended and Restated Agreement of Limited Partnership(3)
3.2(c)	Amendment No. 2 to Second Amended and Restated Agreement of Limited Partnership(4)
3.2(d)	Amendment No. 3 to Second Amended and Restated Agreement of Limited Partnership(5)
3.2(e)	Amendment No. 4 to Second Amended and Restated Agreement of Limited Partnership(6)
3.2(f)	Amendment No. 5 to Second Amended and Restated Agreement of Limited Partnership(8)
3.2(g)	Amendment No. 6 to Second Amended and Restated Agreement of Limited Partnership(9)
3.2(h)	Amendment No. 7 to Second Amended and Restated Agreement of Limited Partnership(14)
3.2(i)	Amendment No. 8 to Second Amended and Restated Agreement of Limited Partnership(15)
3.2(j)	Amendment No. 9 to Second Amended and Restated Agreement of Limited Partnership(12)
3.2(k)	Amendment No. 10 to Second Amended and Restated Agreement of Limited Partnership(30)
3.2(j)	Amendment No. 11 to Second Amended and Restated Agreement of Limited Partnership(36)

202

Exhibit No.	Description
4.1	Common unit certificate (attached as Exhibit A to the Second Amended and Restated Agreement of Limited Partnership) (2)
4.2(a)	6 5/8% Senior Notes Indenture dated September 28, 2012(26)
4.2(b)	Supplemental Indenture dated as of December 20, 2012(32)
4.3(a)	5 7/8% Senior Notes Indenture dated as of February 11, 2013(10)
4.3(b)	Supplemental Indenture dated as of February 11, 2013(10)
4.4	4 3/4% Senior Notes Indenture dated May 10, 2013(7)
4.5(a)	Certificate of Designation of Class D Convertible Preferred Units(30)
4.5(b)	Certificate of Amendment to Certificate of Designation of the Powers, Preferences and Relative, Participating, Optional, and Other Special Rights and Qualifications, Limitations and Restrictions Thereof, dated as of March 12, 2014(36)
4.6	Registration Rights Agreement, dated May 16, 2012, between Atlas Pipeline Partners, L.P., Wells Fargo Bank, National Association and the lenders named in the Credit Agreement dated May 16, 2012 by and among Atlas Energy, L.P. and the lenders named therein(25)
4.7	Certificate of Designation of the Powers, Preferences and Relative, Participating, Optional, and Other Special Rights of Preferred Units and Qualifications, Limitations and Restrictions Thereof, dated as of March 17, 2014 (attached as Exhibit A to Amendment No. 11 to Second Amended and Restated Agreement of Limited Partnership)
10.1(a)	Amended and Restated Agreement of Limited Partnership of Atlas Pipeline Operating Partnership, L.P. (1)
10.1(b)	Amendment No. 3 to Amended and Restated Agreement of Limited Partnership of Atlas Pipeline Operating Partnership, L.P.(14)
10.1(c)	Amendment No. 4 to Amended and Restated Agreement of Limited Partnership of Atlas Pipeline Operating Partnership, L.P.(12)
10.1(d)	Amendment No. 5 to Amended and Restated Agreement of Limited Partnership of Atlas Pipeline Operating Partnership, L.P.(36)
10.2	Second Amended and Restated Limited Liability Company Agreement of Atlas Pipeline Partners GP, LLC.(19)
10.3(a)	Amended and Restated Credit Agreement dated July 27, 2007, amended and restated as of December 22, 2010, by and among Atlas Pipeline Partners, L.P., Wells Fargo Bank, National Association and the several guarantors and lenders hereto(16)
10.3(b)	Amendment No. 1 to the Amended and Restated Credit Agreement dated as of April 19, 2011(22)
10.3(c)	Incremental Joinder Agreement to the Amended and Restated Credit Agreement dated as of July 8, 2011(23)
10.3(d)	Amendment No. 2 to the Amended and Restated Credit Agreement, dated as of May 31, 2012(27)
10.3(e)	Amendment No. 3 to the Amended and Restated Credit Agreement(31)
10.3(f)	Amendment No. 4 to the Amended and Restated Credit Agreement(34)
10.3(g)	Amendment No. 5 to the Amended and Restated Credit Agreement(40)
10.3(h)	Amendment No. 6 to the Amended and Restated Credit Agreement(37)
10.3(i)	Second Amended and Restated Credit Agreement, dated as of August 28, 2014(33)
10.4	Long-Term Incentive Plan(35)
10.5	Amended and Restated 2010 Long-Term Incentive Plan(22)
10.6	Form of Grant of Phantom Units in Exchange for Bonus Units(17)
10.7	Form of 2010 Long-Term Incentive Plan Phantom Unit Grant Letter(18)
10.8	Form of 2004 Long-Term Incentive Plan Phantom Unit Grant Letter(28)
10.9	Form of Grant of Phantom Units to Non-Employee Managers(11)

203

Exhibit No.	Description
10.10	Letter Agreement, by and between Atlas Pipeline Partners, L.P. and Atlas Pipeline Holdings, L.P., dated November 8, 2010(13)
10.11	Non-Competition and Non-Solicitation Agreement, by and between Chevron Corporation and Edward E. Cohen, dated as of November 8, 2010(20)
10.12	Non-Competition and Non-Solicitation Agreement, by and between Chevron Corporation and Jonathan Z. Cohen, dated as of November 8, 2010(20)
10.13	Employment Agreement between Atlas Energy, L.P. and Edward E. Cohen dated as of May 13, 2011(24)
10.14	Employment Agreement between Atlas Energy, L.P. and Jonathan Z. Cohen dated as of May 13, 2011(24)
10.15	Employment Agreement between Atlas Energy, L.P. and Eugene N. Dubay dated as of November 4, 2011(21)
10.16	Employment Agreement between Atlas Energy, L.P., Atlas Pipeline Partners, L.P. and Patrick J. McDonie dated as of July 3, 2012(25)
10.17	Registration Rights Agreement, dated February 11, 2013, by and among Atlas Pipeline Partners, L.P., Atlas Pipeline Finance Corporation, the subsidiaries named therein, and the initial purchasers listed therein (10)
10.18	Registration Rights Agreement, dated May 7, 2013 by and among Atlas Pipeline Partners, L.P. and the purchasers named therein(30)
12.1	Statement of Computation of Ratio of Earnings to Fixed Charges
21.1	Subsidiaries of Atlas Pipeline Partners, L.P.
23.1	Consent of Independent Registered Public Accounting Firm
31.1	Rule 13a-14(a)/15d-14(a) Certification
31.2	Rule 13a-14(a)/15d-14(a) Certification
32.1	Section 1350 Certification
32.2	Section 1350 Certification
99.1	Form of Voting and Support Agreement, by and between Atlas Energy, L.P. and the individual named on the signature page thereto(39)
99.2	Form of Voting and Support Agreement, by and between Targa Resources Corp. and the individual named on the signature page thereto(39)
99.3	Form of Voting and Support Agreement, by and between Targa Resources Partners LP and the individual named on the signature page thereto(39)
99.4	Confidentiality, Non-Competition and Non-Solicitation Agreement, by and among Targa Resources Corp., Targa Resources Partners LP and Edward E. Cohen, dated October 13, 2014(39)
99.5	Confidentiality, Non-Competition and Non-Solicitation Agreement, by and among Targa Resources Corp., Targa Resources Partners LP and Jonathan Z. Cohen, dated October 13, 2014(39)
99.6	Confidentiality, Non-Competition and Non-Solicitation Agreement, by and among Targa Resources Corp., Targa Resources Partners LP and Eugene N. Dubay, dated October 13, 2014(39)
101.INS	XBRL Instance Document(41)
101.SCH	XBRL Schema Document(41)
101.CAL	XBRL Calculation Linkbase Document(41)
101.LAB	XBRL Label Linkbase Document(41)
101.PRE	XBRL Presentation Linkbase Document(41)
101.DEF	XBRL Definition Linkbase Document(41)

(1) Filed previously as an exhibit to registration statement on Form S-1 (Registration No. 333-85193).

(2) Previously filed as an exhibit to registration statement on Form S-3 on April 2, 2004.

(3) Previously filed as an exhibit to quarterly report on Form 10-Q for the quarter ended June 30, 2007.

(4) Previously filed as an exhibit to current report on Form 8-K on July 30, 2007.

(5) Previously filed as an exhibit to current report on Form 8-K on January 8, 2008.

(6) Previously filed as an exhibit to current report on Form 8-K on June 16, 2008.

204

(7) Previously filed as an exhibit to current report on Form 8-K on May 13, 2013.

(8) Previously filed as an exhibit to current report on Form 8-K on January 6, 2009.

(9) Previously filed as an exhibit to current report on Form 8-K on April 3, 2009.

(10) Previously filed as an exhibit to current report on Form 8-K filed on February 12, 2013.

(11) Previously filed as an exhibit to quarterly report on Form 10-Q for the quarter ended September 30, 2010.

(12) Previously filed as an exhibit to current report on Form 8-K on December 13, 2011.

(13) Previously filed as an exhibit to current report on Form 8-K on November 12, 2010.

(14) Previously filed as an exhibit to current report on Form 8-K on April 2, 2010.

(15) Previously filed as an exhibit to current report on Form 8-K on July 7, 2010.

(16) Previously filed as an exhibit to current report on Form 8-K on December 23, 2010.

(17) Previously filed as an exhibit to current report on Form 8-K filed on June 17, 2010.

(18) Previously filed as an exhibit to current report on Form 8-K filed on June 23, 2010.

(19) Previously filed as an exhibit to current report on Form 8-K on October 29, 2013.

(20) Previously filed as an exhibit to Atlas Energy, Inc.’s current report on Form 8-K filed on November 12, 2010.

(21) Previously filed as an exhibit to quarterly report on Form 10-Q for the quarter ended September 30, 2011.

(22) Previously filed as an exhibit to quarterly report on Form 10-Q for the quarter ended March 31, 2011.

(23) Previously filed as an exhibit to current report on Form 8-K filed on July 11, 2011.

(24) Previously filed as an exhibit to Atlas Energy, L.P.’s quarterly report on Form 10-Q for the quarter ended March 31, 2011.

(25) Previously filed as an exhibit to quarterly report on Form 10-Q for the quarter ended June 30, 2012.

(26) Previously filed as an exhibit to current report on Form 8-K filed on January 30, 2013.

(27) Previously filed as an exhibit to current report on Form 8-K filed on May 31, 2012.

(28) Previously filed as an exhibit to quarterly report on Form 10-Q for the quarter ended September 30, 2012.

(29) Previously filed as an exhibit to current report on Form 8-K filed on November 6, 2012.

(30) Previously filed as an exhibit to current report on Form 8-K filed on May 8, 2013.

(31) Previously filed as an exhibit to current report on Form 8-K filed on December 13, 2012.

(32) Previously filed as an exhibit to current report on Form 8-K filed on December 26, 2012.

(33) Previously filed as an exhibit to current report on Form 8-K filed on August 29, 2014.

(34) Previously filed as an exhibit to current report on Form 8-K filed on April 23, 2013.

(35) Previously filed as an exhibit to annual report on Form 10-K filed for the year ended December 31, 2009.

(36) Previously filed as an exhibit to current report on Form 8-K filed on March 17, 2014.

(37) Previously filed as an exhibit to current report on Form 8-K filed on March 11, 2014.

(38) Previously filed as an exhibit to current report on Form 8-K filed on May 13, 2014.

(39) Previously filed as an exhibit to current report on Form 8-K filed on October 16, 2014.

(40) Previously filed as an exhibit to quarterly report on Form 10-Q for the quarter ended June 30, 2014.

(41) Attached as Exhibit 101 to this report are documents formatted in XBRL (Extensible Business Reporting Language). The financial information contained in the XBRL-related documents is “unaudited” or “unreviewed.”

205

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	ATLAS PIPELINE PARTNERS, L.P.
	By:	Atlas Pipeline Partners GP, LLC,
		its General Partner
February 27, 2015	By:	/s/ EUGENE N. DUBAY
	Chief Executive Officer and Managing
	Board Member of the General Partner

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities indicated as of February 27, 2015.

/s/ EDWARD E. COHEN	Chairman of the Managing Board of the General Partner
Edward E. Cohen
/s/ JONATHAN Z. COHEN	Vice Chairman of the Managing Board
Jonathan Z. Cohen	of the General Partner
/s/ EUGENE N. DUBAY	Chief Executive Officer and Managing Board
Eugene N. Dubay	Member of the General Partner
/s/ ROBERT W. KARLOVICH III	Chief Financial Officer and Chief Accounting Officer
Robert W. Karlovich III	of the General Partner
/s/ TONY C. BANKS	Managing Board Member of the General Partner
Tony C. Banks
/s/ CURTIS D. CLIFFORD	Managing Board Member of the General Partner
Curtis D. Clifford
/s/ GAYLE P.W. JACKSON	Managing Board Member of the General Partner
Gayle P.W. Jackson
/s/ MARTIN RUDOLPH	Managing Board Member of the General Partner
Martin Rudolph
/s/ MICHAEL L. STAINES	Managing Board Member of the General Partner
Michael L. Staines

206

EX-12.1

EXHIBIT 12.1

ATLAS PIPELINE PARTNERS, L.P.

STATEMENT OF COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES

(UNAUDITED)

(amounts in thousands, except ratios)

	Years Ended December 31,
	2014			2013			2012			2011			2010
Earnings:
Income (loss) before income tax expense (1)(2)(3)(4)(5)	$	227,268		$	(93,897	)	$	68,235		$	295,478		$	(40,717	)
Fixed charges		110,914			100,916			52,260			38,566			90,152
Adjustment to net distributed income from equity investees		19,271			12,136			877			(577	)		6,146
Interest capitalized		(12,688	)		(7,542	)		(8,669	)		(5,146	)		(757	)
Amortization of previously capitalized interest		1,368			1,029			583			333			255
Non-controlling interest		(13,164	)		(6,975	)		(6,010	)		(6,200	)		(4,738	)
Total	$	332,969		$	5,667		$	107,276		$	322,454		$	50,341
Fixed Charges:
Interest cost and debt expense	$	93,147		$	89,637		$	41,760		$	31,603		$	87,273
Interest capitalized		12,688			7,542			8,669			5,146			757
Interest allocable to rental expense(6)		5,079			3,737			1,831			1,817			2,122
Total fixed charges		110,914			100,916			52,260			38,566			90,152
Preferred dividends		8,233			—			—			389			780
Total fixed charges and preferred dividends	$	119,147		$	100,916		$	52,260		$	38,955		$	90,932
Ratio of earnings to fixed charges		3.00			—	(7)		2.1			8.4			—	(8)
Ratio of earnings to fixed charges and preferred dividends		2.79			N/A			N/A			8.3			—	(9)

(1) Includes a non-cash gain recognized on derivatives of $141.0 million and a $47.8 million gain on the sale of WTLPG for the year ended December 31, 2014.

(2) Includes a loss on asset sales of $1.5 million, a non-cash loss recognized on derivatives of $28.4 million, a goodwill impairment loss of $43.9 million and a $26.6 million loss early extinguishment of debt for the year ended December 31, 2013.

(3) Includes a non-cash gain recognized on derivatives of $23.3 million for the year ended December 31, 2012.

(4) Includes a gain on asset sales of $256.3 million and a non-cash loss recognized on derivatives of $4.5 million for the year ended December 31, 2011.

(5) Includes a non-cash gain recognized on derivatives of $10.2 million and a non-recurring cash derivative unwind expense of $17.9 million for the year ended December 31, 2010.

(6) Represents one-third of the total operating lease rental expense, which is that portion, deemed to be interest.

(7) The Partnership earnings were insufficient to cover its fixed charges by $95.2 million for this period.

(8) The Partnership earnings were insufficient to cover its fixed charges by $39.8 million for this period.

(9) The Partnership earnings were insufficient to cover its fixed charges and preferred dividends by $40.6 million for this period.

EX-21.1

EXHIBIT 21.1

SUBSIDIARIES OF ATLAS PIPELINE PARTNERS, L.P.

Name	Jurisdiction
Atlas Pipeline Operating Partnership, L.P.	Delaware
Atlas Pipeline Escrow, LLC	Delaware
APL Laurel Mountain, LLC	Delaware
APC Acquisition, LLC	Delaware
Atlas Pipeline Tennessee, LLC	Pennsylvania
Setting Sun Pipeline Corporation	Delaware
Atlas Pipeline Mid-Continent LLC	Delaware
Velma Intrastate Gas Transmission Company, LLC	Delaware
Slider WestOk Gathering, LLC	Delaware
Velma Gas Processing Company, LLC	Delaware
Atlas Pipeline NGL Holdings, LLC	Delaware
Atlas Pipeline NGL Holdings II, LLC	Delaware
Atlas Pipeline Finance Corp.	Delaware
NOARK Energy Services, LLC	Oklahoma
Atlas Pipeline Mid-Continent WestOk, LLC	Delaware
Atlas Pipeline Mid-Continent WestTex, LLC	Delaware
Atlas Chaney Dell, LLC	Delaware
Atlas Midkiff, LLC	Delaware
Atlas Pipeline Mid-Continent Holdings, LLC	Delaware
APL Gas Treating, LLC	Delaware
APL Arkoma Holdings, LLC	Delaware
APL Arkoma, Inc.	Delaware
APL Arkoma Midstream, LLC	Delaware
APL Barnett, LLC	Delaware
Pecos Pipeline, LLC	Delaware
Tesuque Pipeline, LLC	Delaware
APL SouthTex Midstream LLC	Delaware
APL SouthTex Pipeline Company LLC	Texas
APL SouthTex Processing Company LP	Texas
APL SouthTex Midstream Holding Company LP	Texas
APL SouthTex Gas Utility Company LP	Texas
APL SouthTex Transmission Company LP	Texas
APL SouthTex Midstream Company LP	Texas

EX-23.1

EXHIBIT 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We have issued our reports dated February 27, 2015, with respect to the consolidated financial statements and internal control over financial reporting included in the Annual Report of Atlas Pipeline Partners, L.P. and subsidiaries on Form 10-K for the year ended December 31, 2014. We hereby consent to the incorporation by reference of said reports in the Registration Statements of Atlas Pipeline Partners, L.P. on Forms S-8 (File No. 333-125566, effective June 6, 2005; File No. 333-166054, effective April 13, 2010) and Form S-3 (File No. 333-192464, effective November 21, 2013).

/s/ GRANT THORNTON LLP

Tulsa, Oklahoma

February 27, 2015

EX-31.1

EXHIBIT 31.1

CERTIFICATION

I, Eugene N. Dubay, certify that:

1. I have reviewed this annual report on Form 10-K for the year ended December 31, 2014 of Atlas Pipeline Partners, L.P.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

By:	/s/ EUGENE N. DUBAY
Name:	Eugene N. Dubay
Title:	Chief Executive Officer of the General Partner
Date:	February 27, 2015

EX-31.2

EXHIBIT 31.2

CERTIFICATION

I, Robert W. Karlovich, III, certify that:

1. I have reviewed this annual report on Form 10-K for the year ended December 31, 2014 of Atlas Pipeline Partners, L.P.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

By:	/s/ ROBERT W. KARLOVICH, III
Name:	Robert W. Karlovich, III
Title:	Chief Financial Officer of the General Partner
Date:	February 27, 2015

EX-32.1

EXHIBIT 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Atlas Pipeline Partners, L.P. on Form 10-K for the year ended December 31, 2014 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Eugene N. Dubay, Chief Executive Officer of the General Partner, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Partnership.

/s/ EUGENE N. DUBAY

Eugene N. Dubay

Chief Executive Officer of the General Partner

February 27, 2015

EX-32.2

EXHIBIT 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Atlas Pipeline Partners, L.P. on Form 10-K for the year ended December 31, 2014 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Robert W. Karlovich, III, Chief Financial Officer of the General Partner, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Partnership.

/s/ ROBERT W. KARLOVICH, III

Robert W. Karlovich, III

Chief Financial Officer of the General Partner

February 27, 2015

XML

Fair Value Of Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2014

Fair Value Of Financial Instruments

Schedule Of Fair Value, Derivative Assets And Liabilities

	Level 1		Level 2		Level 3		Total
December 31, 2014
Assets
Commodity swaps	$	-	$	50,585	$	64,693	$	115,278
Commodity options		-		8,774		1,353		10,127
Total assets		-		59,359		66,046		125,405
Liabilities
Commodity swaps		-		-		-		-
Commodity options		-		-		-		-
Total liabilities		-		-		-		-
Total derivatives	$	-	$	59,359	$	66,046	$	125,405
December 31, 2013
Assets
Commodity swaps	$	-	$	2,994	$	1,412	$	4,406
Commodity options		-		4,337		210		4,547
Total assets		-		7,331		1,622		8,953
Liabilities
Commodity swaps		-		(4,695)		(13,378)		(18,073)
Total liabilities		-		(4,695)		(13,378)		(18,073)
Total derivatives	$	-	$	2,636	$	(11,756)	$	(9,120)

Schedule of Change in Fair Value Level 3 Derivative Instruments

	NGL Fixed Price Swaps			NGL Put Options			NGL Call Options			Total
	Gallons	Amount		Gallons	Amount		Gallons	Amount		Amount
Balance – January 1, 2013	87,066	$	16,814	38,556	$	6,269	-	$	-	$	23,083
New contracts(1)	104,328		-	7,560		816	-		-		816
Cash settlements from unrealized (gain) loss(2)(3)	(61,236)		(11,496)	(39,816)		8,545	-		-		(2,951)
Net change in unrealized loss(2)	-		(17,284)	-		(2,367)	-		-		(19,651)
Deferred option premium recognition(3)	-		-	-		(13,053)	-		-		(13,053)
Balance – December 31, 2013	130,158	$	(11,966)	6,300	$	210	-	$	-	$	(11,756)
New contracts(1)	70,560		-	5,040		200	5,040		(200)		-
Cash settlements from unrealized (gain) loss(2)(3)	(84,546)		3,406	(8,190)		100	(3,780)		(121)		3,385
Net change in unrealized gain (loss)(2)	-		73,253	-		1,448	-		200		74,901
Deferred option premium recognition(3)	-		-	-		(605)	-		121		(484)
Balance – December 31, 2014	116,172	$	64,693	3,150	$	1,353	1,260	$	-	$	66,046

________________________

(1) Swaps are entered into with no value on the date of trade.  Options include premiums paid, which are included in the value of the derivatives on the date of trade.

(2) Included within derivative gain (loss), net on the Partnership’s consolidated statements of operations.

Includes option premium cost reclassified from unrealized gain (loss) to realized gain (loss) at time of option expiration.

Schedule Of Unobservable Inputs Used In Fair Value Measurement

	Gallons	Third Party Quotes(1)		Adjustments(2)		Total Amount
As of December 31, 2014
Propane swaps	101,556	$	50,201	$	-	$	50,201
Natural gasoline swaps	14,616		14,859		(367)		14,492
Total NGL swaps – December 31, 2014	116,172	$	65,060	$	(367)	$	64,693
As of December 31, 2013
Propane swaps	100,296	$	(10,260)	$	-	$	(10,260)
Isobutane swaps	6,300		(2,342)		955		(1,387)
Normal butane swaps	7,560		40		322		362
Natural gasoline swaps	16,002		132		(813)		(681)
Total NGL swaps – December 31, 2013	130,158	$	(12,430)	$	464	$	(11,966)

_______________________

(1) Based upon the difference between the quoted market price provided by the third party and the fixed price of the swap.

(2) Product and location basis differentials calculated through the use of a regression model, which compares the difference between the settlement prices for the products and locations quoted by the third party and the settlement prices for the actual products and locations underlying the derivatives, using a three year historical period.

Schedule of Regression Coefficients Utilized in Unobservable Input Adjustments

	Level 3 NGL Swap Fair		Adjustment based upon Regression Coefficient
	Value Adjustments		Lower 95%	Upper 95%	Average
As of December 31, 2014:
Natural gasoline	$	(367)	0.9714	0.9748	0.9731
Total Level 3 adjustments – December 31, 2014	$	(367)
As of December 31, 2013:
Isobutane	$	955	1.1184	1.1284	1.1234
Normal butane		322	1.0341	1.0386	1.0364
Natural gasoline		(813)	0.9727	0.9751	0.9739
Total Level 3 adjustments – December 31, 2013	$	464

Schedule of Change in Fair Value of NGL Linefill

	Linefill Valued at Market			Linefill Valued on FIFO			Total NGL Linefill
	Gallons	Amount		Gallons	Amount		Gallons	Amount
Balance – January 1, 2013	9,148	$	7,783	-	$	-	9,148	$	7,783
Deliveries into NGL linefill	-		-	80,758		60,565	80,758		60,565
NGL linefill sales	(3,360)		(2,795)	(71,433)		(52,155)	(74,793)		(54,950)
Net change in NGL linefill valuation(1)	-		(249)	-		-	-		(249)
Acquired NGL linefill(2)	-		-	2,213		1,368	2,213		1,368
Balance – December 31, 2013	5,788	$	4,739	11,538	$	9,778	17,326	$	14,517
Deliveries into NGL linefill	4,385		2,919	59,273		38,451	63,658		41,370
NGL linefill sales	(4,629)		(3,917)	(49,335)		(31,470)	(53,964)		(35,387)
Adjustments for linefill contract revision	11,982		9,846	(11,982)		(9,846)	-		-
Net change in NGL linefill valuation(1)	-		(5,888)	-		-	-		(5,888)
Balance – December 31, 2014	17,526	$	7,699	9,494	$	6,913	27,020	$	14,612

_______________________

(1) Included within natural gas and liquid sales on the Partnership’s consolidated statements of operations.

(2) NGL linefill acquired as part of the TEAK and Cardinal Acquisitions (see Note 4).

XML

Acquisitions (Final Values Assigned To Assets Acquired And Liabilities Assumed) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended			0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 20, 2012	May 07, 2013
Goodwill	$ 365,763	$ 368,572
Net cash paid for acquisition	0	975,887	633,610
Cardinal Midstream, LLC [Member]
Cash				1,184
Accounts receivable				13,783
Prepaid expenses and other				1,289
Property, plant and equipment				246,787
Intangible assets				232,740
Goodwill				214,090
Total assets acquired				709,873
Current portion of long-term debt				(341)
Accounts payable and accrued liabilities				(14,596)
Deferred tax liability, net				(35,353)
Long-term debt, less current portion				(604)
Total liabilities acquired				(50,894)
Non-controlling interest				(58,905)
Net assets acquired				600,074
Less cash received				(1,184)
Net cash paid for acquisition				598,890
TEAK Midstream LLC [Member]
Cash					8,074
Accounts receivable					11,055
Prepaid expenses and other					1,626
Property, plant and equipment					197,683
Intangible assets					430,000
Goodwill					186,050
Equity method investment in joint ventures					184,327
Total assets acquired					1,018,815
Accounts payable and accrued liabilities					(34,995)
Other long term liabilities					(1,075)
Total liabilities acquired					(36,070)
Net assets acquired					982,745
Less cash received					(8,074)
Net cash paid for acquisition					$ 974,671

XML

Summary Of Significant Accounting Policies (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	May 07, 2013
Adjustment for realized losses reclassified to net income	$ 0	$ 0	$ (4,390,000)
Book overdrafts	23,900,000	28,800,000
Allowance for Doubtful Accounts Receivable, Current	0	0
Impairment of Long-Lived Assets Held-for-use	0	0	0
Asset Retirement Obligation	0	0
Accrual for Environmental Loss Contingencies	0	0
Unbilled receivables, not billed at balance sheet date	175,300,000	134,900,000
Atlas WestOK LLC [Member]
Interest in majority owned subsidiary	100.00%
Atlas WestTX LLC [Member]
Interest in majority owned subsidiary	72.80%
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	27.20%
Atlas WestOK LLC And Atlas WestTX LLC [Member]
Interest in majority owned subsidiary	95.00%
Notes Receivable, Related Parties	$ 1,900,000,000
Centrahoma Processing, LLC member
Interest in majority owned subsidiary	60.00%
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	40.00%
TEAK Midstream LLC [Member]
Percentage of voting interests acquired				100.00%
General Partner [Member]
General Partner, ownership interest	2.00%

XML

Derivative Instruments (Schedule Of Derivative Assets At Fair Value) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Offsetting of Derivative Assets
Derivative assets, gross	$ 125,405	$ 8,953
Offsetting derivative liabilities, gross	0	(6,509)
Total derivative assets, net	125,405	2,444
Current Portion of Derivative Assets [Member]
Offsetting of Derivative Assets
Derivative assets, gross	88,007	1,310
Offsetting derivative liabilities, gross	0	(1,136)
Total derivative assets, net	88,007	174
Long-Term Portion of Derivative Assets [Member]
Offsetting of Derivative Assets
Derivative assets, gross	37,398	5,082
Offsetting derivative liabilities, gross	0	(2,812)
Total derivative assets, net	37,398	2,270
Current Portion of Derivative Liabilities [Member]
Offsetting of Derivative Assets
Derivative assets, gross		1,612
Offsetting derivative liabilities, gross		(1,612)
Total derivative assets, net		0
Long-Term Portion of Derivative Liabilities [Member]
Offsetting of Derivative Assets
Derivative assets, gross		949
Offsetting derivative liabilities, gross		(949)
Total derivative assets, net		$ 0

XML

Equity Method Investments (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	May 14, 2014	May 07, 2013
West Texas LPG Pipeline Limited Partnership [Member]
Equity method investment, ownership percentage		20.00%
Net proceeds of sale of equity method investment	$ 131.0
Gain (loss) on sale of equity method investment	$ 47.8
T2 LaSalle (Member)
Equity method investment, ownership percentage			75.00%
T2 Eagle Ford (Member)
Equity method investment, ownership percentage			50.00%
T2 EF Co Gen (Member)
Equity method investment, ownership percentage			50.00%

XML

Fair Value Of Financial Instruments (Schedule Of Regression Coefficients Utilized In Unobservable Input Adjustments) (Details) (Derivative Financial Instruments, Assets [Member], Level 3 [Member], Commodity Swaps [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Adjustment	(367)	464
Isobutane
Adjustment		955
Normal butane [Member]
Adjustment		322
Natural Gasoline [Member]
Adjustment	(367)	(813)
Minimum [Member] | Isobutane
Regression coefficient		1.1184
Minimum [Member] | Normal butane [Member]
Regression coefficient		1.0341
Minimum [Member] | Natural Gasoline [Member]
Regression coefficient	0.9714	0.9727
Maximum [Member] | Isobutane
Regression coefficient		1.1284
Maximum [Member] | Normal butane [Member]
Regression coefficient		1.0386
Maximum [Member] | Natural Gasoline [Member]
Regression coefficient	0.9748	0.9751
Weighted Average [Member] | Isobutane
Regression coefficient		1.1234
Weighted Average [Member] | Normal butane [Member]
Regression coefficient		1.0364
Weighted Average [Member] | Natural Gasoline [Member]
Regression coefficient	0.9731	0.9739

XML

Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2014

Quarterly Financial Data

Schedule of Quarterly Financial Information

	Fourth Quarter(1)		Third Quarter(2)		Second Quarter(3)		First Quarter(4)
	(in thousands, except per unit data)
Year ended December 31, 2014:
Revenue	$	799,978	$	761,182	$	713,956	$	700,004
Costs and expenses		(684,124)		(707,084)		(698,543)		(691,475)
Equity loss in joint ventures		(3,543)		(4,711)		(3,875)		(1,878)
Gain (loss) on asset disposition		(448)		(636)		48,465		-
Income before tax		111,863		48,751		60,003		6,651
Income tax benefit		857		623		498		398
Net income		112,720		49,374		60,501		7,049
Income attributable to non-controlling interests		(2,708)		(4,029)		(3,965)		(2,462)
Preferred unit imputed dividend effect		(11,379)		(11,378)		(11,378)		(11,378)
Preferred unit dividends in kind		(11,019)		(11,408)		(10,406)		(9,719)
Preferred unit dividends		(2,609)		(2,609)		(2,609)		(406)
Net income (loss) attributable to common limited partners and the General Partner		85,005		19,950		32,143		(16,916)
Net income (loss) attributable to common limited partners per unit – basic and diluted(5)(6)	$	0.76	$	0.13	$	0.27	$	(0.27)

__________________________________

(1) Net income includes a $112.9 million non-cash derivative gain.

(2) Net income includes a $26.7 million non-cash derivative gain.

(3) Net income includes a $0.3 million non-cash derivative gain.

(4) Net income includes a $1.2 million non-cash derivative gain.

(5) For the first quarter of the year ended December 31, 2014, approximately 1,543,000 phantom units were excluded from the computation of diluted earnings attributable to common limited partners per unit as the impact of the conversion would have been anti-dilutive.

(6) For the first quarter of the year ended December 31, 2014, approximately 13,964,000 weighted average Class D Preferred Units were excluded from the computation of diluted earnings attributable to common limited partners per unit as the impact of the conversion would have been anti-dilutive.

	Fourth Quarter(1)		Third Quarter(2)		Second Quarter(3)		First Quarter(4)
	(in thousands, except per unit data)
Year ended December 31, 2013:
Revenue	$	580,128	$	557,870	$	560,939	$	407,912
Costs and expenses		(581,918)		(582,369)		(548,866)		(410,871)
Equity income (loss) in joint ventures		(4,422)		(1,882)		(472)		2,040
Loss on asset disposition		-		-		(1,519)		-
Goodwill impairment loss		(43,866)		-		-		-
Loss on early extinguishment of debt		-		-		(19)		(26,582)
Income (loss) before tax		(50,078)		(26,381)		10,063		(27,501)
Income tax benefit		1,406		817		28		9
Net income (loss)		(48,672)		(25,564)		10,091		(27,492)
Income attributable to non-controlling interests		(2,282)		(1,514)		(1,810)		(1,369)
Preferred unit imputed dividend effect		(11,378)		(11,378)		(6,729)		-
Preferred unit dividends in kind		(9,170)		(9,072)		(5,341)		-
Net loss attributable to common limited partners and the General Partner		(71,502)		(47,528)		(3,789)		(28,861)
Net loss attributable to common limited partners per unit – basic and diluted(5)(6)	$	(0.94)	$	(0.66)	$	(0.11)	$	(0.48)

__________________________________

(1) Net income includes a $15.4 million non-cash derivative loss.

(2) Net income includes a $23.6 million non-cash derivative loss.

(3) Net income includes a $24.3 million non-cash derivative gain.

(4) Net income includes a $13.7 million non-cash derivative loss.

(5) For the fourth, third, second, and first quarters of the year ended December 31, 2013, approximately 1,476,000,  1,455,000,  967,000, and 1,055,000 phantom units, respectively, were excluded from the computation of diluted earnings attributable to common limited partners per unit, because the inclusion of such phantom units would have been anti-dilutive.

For the fourth, third and second quarters of the year ended December 31, 2013, approximately 13,709,000,  13,518,000 and 9,013,000 weighted average Class Preferred Units, respectively, were excluded from the computation of diluted earnings attributable to common limited partners per unit as the impact of the conversion would have been anti-dilutive.

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Equity (Tables)

12 Months Ended

Dec. 31, 2014

Schedule Of Distributions Made To Limited Partners And The General Partner

				Total Cash		Total Cash
		Cash		Distribution		Distribution
		Distribution		to Common		to the
	Date Cash	Per Common		Limited		General
For Quarter	Distribution	Limited		Partners		Partner
Ended	Paid	Partner Unit		(in thousands)		(in thousands)
December 31, 2011	February 14, 2012	$	0.55	$	29,489	$	2,031
March 31, 2012	May 15, 2012		0.56		30,030		2,217
June 30, 2012	August 14, 2012		0.56		30,085		2,221
September 30, 2012	November 14, 2012		0.57		30,641		2,409
December 31, 2012	February 14, 2013		0.58		37,442		3,117
March 31, 2013	May 15, 2013		0.59		45,382		3,980
June 30, 2013	August 14, 2013		0.62		48,165		5,875
September 30, 2013	November 14, 2013		0.62		49,298		6,013
December 31, 2013	February 14, 2014		0.62		49,969		6,095
March 31, 2014	May 15, 2014		0.62		49,998		6,099
June 30, 2014	August 14, 2014		0.63		51,781		7,055
September 30, 2014	November 14, 2014		0.64		54,080		8,115

Class D convertible preferred limited partners' interests [Member]

Schedule Of Distributions Made To Limited Partners And The General Partner

	Date Preferred	Preferred
For Quarter	Unit Distributions	Unit Distributions
Ended	Paid in Kind	Paid in Kind(1)
June 30, 2013	August 14, 2013	138,598
September 30, 2013	November 14, 2013	239,888
December 31, 2013	February 14, 2014	274,785
March 31, 2014	May 15, 2014	305,983
June 30, 2014	August 14, 2014	294,439
September 30, 2014	November 14, 2014	320,374

__________________________________

The partnership considers preferred unit distributions paid in kind to be non-cash financing activity.

Class E preferred limited partners' interests [Member]

Schedule Of Distributions Made To Limited Partners And The General Partner

				Total Cash
	Date Class E			Distribution on
	Preferred Limited	Cash Distribution		Class E Preferred
Preferred Units	Partner Unit	Per Class E Preferred		Limited Partner
Distribution Period	Distribution Paid	Limited Partner Unit		Units (in thousands)
March 17, 2014 - July 14, 2014	July 15, 2014	$	0.676040	$	3,421
July 15, 2014 - October 14, 2014	October 15, 2014		0.515625		2,609

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Fair Value Of Financial Instruments (Schedule Of Change In Fair Value Of NGL Linefill) (Details) (NGL Linefill [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014 gal	Dec. 31, 2013 gal
Beginning balance, volume	17,326,000	9,148,000
Beginning balance, fair value	$ 14,517	$ 7,783
Deliveries into NGL linefill, volume	63,658,000	80,758,000
Deliveries into NGL linefill, value	41,370	60,565
NGL linefill sales, volume	(53,964,000)	(74,793,000)
NGL linefill sales, value	(35,387)	(54,950)
Adjustments for linefill contract revision, volume	0
Adjustments for linefill contract revision, value	0
Net change in NGL linefill valuation	(5,888)	(249)
Acquired NGL linefill, volume		2,213,000
Acquired NGL linefill, value		1,368
Ending balance, volume	27,020,000	17,326,000
Ending balance, fair value	14,612	14,517
Linefill Valued at Market [Member]
Beginning balance, volume	5,788,000	9,148,000
Beginning balance, fair value	4,739	7,783
Deliveries into NGL linefill, volume	4,385,000	0
Deliveries into NGL linefill, value	2,919	0
NGL linefill sales, volume	(4,629,000)	(3,360,000)
NGL linefill sales, value	(3,917)	(2,795)
Adjustments for linefill contract revision, volume	11,982,000
Adjustments for linefill contract revision, value	9,846
Net change in NGL linefill valuation	(5,888)	(249)
Acquired NGL linefill, volume		0
Acquired NGL linefill, value		0
Ending balance, volume	17,526,000	5,788,000
Ending balance, fair value	7,699	4,739
Linefill Valued on FIFO [Member]
Beginning balance, volume	11,538,000	0
Beginning balance, fair value	9,778	0
Deliveries into NGL linefill, volume	59,273,000	80,758,000
Deliveries into NGL linefill, value	38,451	60,565
NGL linefill sales, volume	(49,335,000)	(71,433,000)
NGL linefill sales, value	(31,470)	(52,155)
Adjustments for linefill contract revision, volume	(11,982,000)
Adjustments for linefill contract revision, value	(9,846)
Net change in NGL linefill valuation	0	0
Acquired NGL linefill, volume		2,213,000
Acquired NGL linefill, value		1,368
Ending balance, volume	9,494,000	11,538,000
Ending balance, fair value	6,913	9,778
Level 3 [Member]
Adjustment	$ 100	$ (400)

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Derivative Instruments (Schedule Of Cash Flow Hedges Included In Accumulated Other Comprehensive Income (Loss)) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Derivative Instruments
Loss reclassified from accumulated other comprehensive loss into natural gas and liquids sales	$ 0	$ 0	$ (4,390)

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Benefit Plans (Narrative) (Details)	Dec. 31, 2014
Benefit Plans
Number of phantom units or option units authorized	3,435,000
Number of units outstanding	1,684,289
Number of units available for grant	139,218

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Equity Method Investments (Schedule Of Earnings From Equity Method Investments) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Equity income (loss) in joint ventures	$ (3,543)	$ (4,711)	$ (3,875)	$ (1,878)	$ (4,422)	$ (1,882)	$ (472)	$ 2,040	$ (14,007)	$ (4,736)	$ 6,323
West Texas LPG Pipeline Limited Partnership [Member]
Equity income (loss) in joint ventures									2,611	4,988	6,323
T2 LaSalle (Member)
Equity income (loss) in joint ventures									(4,271)	(3,127)	0
T2 Eagle Ford (Member)
Equity income (loss) in joint ventures									(8,754)	(4,408)	0
T2 EF Co Gen (Member)
Equity income (loss) in joint ventures									$ (3,593)	$ (2,189)	$ 0

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Fair Value Of Financial Instruments (Schedule Of Change In Fair Value Of Level 3 Derivative Instruments) (Details) (Derivative Financial Instruments, Assets [Member], Level 3 [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Beginning balance, fair value	$ (11,756)	$ 23,083
New contracts	0	816
Cash settlements from unrealized (gain) loss	3,385	(2,951)
Net change in unrealized gain (loss)	74,901	(19,651)
Deferred option premium recognition	(484)	(13,053)
Ending balance, fair value	66,046	(11,756)
Commodity Swaps [Member]
Beginning balance, volume	130,158,000	87,066,000
Beginning balance, fair value	(11,966)	16,814
New contracts, volume	70,560,000	104,328,000
New contracts	0	0
Settled contracts, volume	(84,546,000)	(61,236,000)
Cash settlements from unrealized (gain) loss	3,406	(11,496)
Net change in unrealized gain (loss)	73,253	(17,284)
Deferred option premium recognition	0
Ending balance, volume	116,172,000	130,158,000
Ending balance, fair value	64,693	(11,966)
Commodity Options [Member] | Purchased Put Options [Member]
Beginning balance, volume	6,300,000	38,556,000
Beginning balance, fair value	210	6,269
New contracts, volume	5,040,000	7,560,000
New contracts	200	816
Settled contracts, volume	(8,190,000)	(39,816,000)
Cash settlements from unrealized (gain) loss	100	8,545
Net change in unrealized gain (loss)	1,448	(2,367)
Deferred option premium recognition	(605)	(13,053)
Ending balance, volume	3,150,000	6,300,000
Ending balance, fair value	1,353	210
Commodity Options [Member] | Sold Call Options [Member]
Beginning balance, volume	0	0
Beginning balance, fair value	0	0
New contracts, volume	5,040,000	0
New contracts	(200)	0
Settled contracts, volume	(3,780,000)	0
Cash settlements from unrealized (gain) loss	(121)	0
Net change in unrealized gain (loss)	200	0
Deferred option premium recognition	121	0
Ending balance, volume	1,260,000	0
Ending balance, fair value	$ 0	$ 0

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Commitments And Contingencies (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Commitments And Contingencies
Throughput obligation- amount paid	$ 28.3	$ 34.8	$ 10.5
Throughput obligation - Due 2015	20.7
Throughput obligation - Due 2016	23.9
Throughput obligation - Due 2017	23.9
Throughput obligation - Due 2018	21.8
Throughput obligation - Due 2019	16.9
Purchase commitments	$ 179.1

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Accrued Liabilites (Schedule Of Accrued Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Accrued Liabilities
Accrued capital expenditures	$ 13,233	$ 17,898
Acquisition-related liabilities	4,779	8,933
Accrued ad valorem and production taxes	4,298	3,551
Distributions payable	2,609	0
Merger-related liabilities	6,056
Unconditional purchase obligations	6,521	0
Other	12,233	17,067
Accrued liabilities	$ 49,729	$ 47,449

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Commitments and Contingencies (Schedule of Future Minimum Operating Lease Payments) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Commitments And Contingencies
2015	$ 12,621,000
2016	8,610,000
2017	5,126,000
2018	4,469,000
2019	644,000
Thereafter	322,000
Total future minimum operating lease payments	31,792,000
Rental expense	$ 15,200,000	$ 11,300,000	$ 5,500,000

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Fair Value Of Financial Instruments (Schedule Of Unobservable Inputs Used In Fair Value Measurement) (Details) (Derivative Financial Instruments, Assets [Member], Level 3 [Member], Commodity Swaps [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2014 contract	Dec. 31, 2013 contract	Dec. 31, 2012 contract
Volumes	116,172,000	130,158,000	87,066,000
Third party quotes	$ 65,060	$ (12,430)
Adjustment	(367)	464
Derivative, fair value asset (liability)	64,693	(11,966)
Propane
Volumes	101,556,000	100,296,000
Third party quotes	50,201	(10,260)
Adjustment	0	0
Derivative, fair value asset (liability)	50,201	(10,260)
Isobutane
Volumes		6,300,000
Third party quotes		(2,342)
Adjustment		955
Derivative, fair value asset (liability)		(1,387)
Normal butane [Member]
Volumes		7,560,000
Third party quotes		40
Adjustment		322
Derivative, fair value asset (liability)		362
Natural Gasoline [Member]
Volumes	14,616,000	16,002,000
Third party quotes	14,859	132
Adjustment	(367)	(813)
Derivative, fair value asset (liability)	$ 14,492	$ (681)

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Derivative Instruments (Schedule Of Derivative Liabilities At Fair Value) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Offsetting of Derivative Liabilities
Derivative liabilities, gross	$ 0	$ (18,073)
Offsetting derivative assets, gross	0	6,509
Total derivative liabilities, net	0	(11,564)
Current Portion of Derivative Assets [Member]
Offsetting of Derivative Liabilities
Derivative liabilities, gross	0	(1,136)
Offsetting derivative assets, gross	0	1,136
Total derivative liabilities, net	0	0
Long-Term Portion of Derivative Assets [Member]
Offsetting of Derivative Liabilities
Derivative liabilities, gross	0	(2,812)
Offsetting derivative assets, gross	0	2,812
Total derivative liabilities, net	0	0
Current Portion of Derivative Liabilities [Member]
Offsetting of Derivative Liabilities
Derivative liabilities, gross		(12,856)
Offsetting derivative assets, gross		1,612
Total derivative liabilities, net		(11,244)
Long-Term Portion of Derivative Liabilities [Member]
Offsetting of Derivative Liabilities
Derivative liabilities, gross		(1,269)
Offsetting derivative assets, gross		949
Total derivative liabilities, net		$ (320)

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Segment Information

12 Months Ended

Dec. 31, 2014

Segment Information

Segment Information

NOTE 19 ─ SEGMENT INFORMATION

As a result of the sale of the Partnership’s subsidiaries that owned an interest in WTLPG on May 14, 2014 (see Note 5), the Partnership assessed its reportable segments and realigned its reportable segments into two new segments: Oklahoma and Texas.  These reportable segments reflect the way the Partnership will manage its operations going forward.  The Partnership has adjusted its segment presentation from the amounts previously presented to reflect the realignment of the segments.

The Oklahoma segment consists of the SouthOK and WestOK operations, which are comprised of natural gas gathering, processing and treating assets servicing drilling activity in the Anadarko, Ardmore and Arkoma Basins and which were formerly included within the previous Gathering and Processing segment.  Oklahoma revenues are primarily derived from the sale of residue gas and NGLs and the gathering, processing and treating of natural gas within the state of Oklahoma. 

The Texas segment consists of (1) the SouthTX and WestTX operations, which are comprised of natural gas gathering and processing assets servicing drilling activity in the Permian Basin and the Eagle Ford Shale play in southern Texas; and (2) the natural gas gathering assets located in the Barnett Shale play in Texas.  These assets were formerly included within the previous Gathering and Processing segment.  Texas revenues are primarily derived from the sale of residue gas and NGLs and the gathering and processing of natural gas within the state of Texas.

The previous Transportation and Treating segment, which consisted of (1) the gas treating operations, which own contract gas treating facilities located in various shale plays; and (2) the former subsidiaries’ interest in WTLPG, has been eliminated and the financial information is now included within Corporate and Other.  On February 27, 2015, the Partnership agreed to transfer 100% of the Partnership’s interest in natural gas gathering assets located in the Appalachian Basin in Tennessee to the Partnership’s affiliate, ARP (see Note 3).  The Tennessee gathering assets were formerly included in the previous Gathering and Processing Segment, but are now included within Corporate and Other.

The following summarizes the Partnership’s reportable segment data for the periods indicated (in thousands):

	Oklahoma		Texas		Corporate  and Other		Consolidated
Year Ended December 31, 2014:
Revenue:
Revenues – third party(1)	$	1,722,810	$	1,115,545	$	136,479	$	2,974,834
Revenues – affiliates		-		-		286		286
Total revenues		1,722,810		1,115,545		136,765		2,975,120
Costs and Expenses:
Natural gas and liquids cost of sales		1,383,137		908,777		-		2,291,914
Operating expenses		62,758		48,700		2,148		113,606
General and administrative(1)		-		-		73,943		73,943
Other expenses(2)		-		-		6,073		6,073
Depreciation and amortization		102,614		95,203		4,726		202,543
Interest expense(1)		-		-		93,147		93,147
Total costs and expenses		1,548,509		1,052,680		180,037		2,781,226
Equity income (loss) in joint ventures		-		(16,619)		2,612		(14,007)
Gain (loss) on asset disposition		(448)		-		47,829		47,381
Income before tax		173,853		46,246		7,169		227,268
Income tax benefit		(2,376)		-		-		(2,376)
Net income	$	176,229	$	46,246	$	7,169	$	229,644

	Oklahoma		Texas		Corporate  and Other		Consolidated
Year Ended December 31, 2013:
Revenue:
Revenues – third party(1)	$	1,385,342	$	743,412	$	(22,208)	$	2,106,546
Revenues – affiliates		-		-		303		303
Total revenues		1,385,342		743,412		(21,905)		2,106,849
Costs and Expenses:
Natural gas and liquids cost of sales		1,087,245		603,137		-		1,690,382
Operating expenses		58,848		33,716		1,963		94,527
General and administrative(1)		-		-		60,856		60,856
Other expenses(2)		-		-		20,005		20,005
Depreciation and amortization		98,240		65,797		4,580		168,617
Interest expense(1)		-		-		89,637		89,637
Total costs and expenses		1,244,333		702,650		177,041		2,124,024
Equity income (loss) in joint ventures		-		(9,724)		4,988		(4,736)
Loss on asset disposition		(1,519)		-		-		(1,519)
Goodwill impairment loss		-		-		(43,866)		(43,866)
Loss on early extinguishment of debt		-		-		(26,601)		(26,601)
Income (loss) before tax		139,490		31,038		(264,425)		(93,897)
Income tax benefit		(2,260)		-		-		(2,260)
Net income (loss)	$	141,750	$	31,038	$	(264,425)	$	(91,637)

	Oklahoma		Texas		Corporate  and Other		Consolidated
Year Ended December 31, 2012:
Revenue:
Revenues – third party(1)	$	757,909	$	459,103	$	28,573	$	1,245,585
Revenues – affiliates		-		-		435		435
Total revenues		757,909		459,103		29,008		1,246,020
Costs and Expenses:
Natural gas and liquids cost of sales		551,420		376,526		-		927,946
Operating expenses		39,627		21,712		759		62,098
General and administrative(1)		-		-		47,206		47,206
Other expenses(2)		5		(308)		15,372		15,069
Depreciation and amortization		56,154		33,284		591		90,029
Interest expense(1)		-		-		41,760		41,760
Total costs and expenses		647,206		431,214		105,688		1,184,108
Equity income in joint ventures		-		-		6,323		6,323
Income (loss) before tax		110,703		27,889		(70,357)		68,235
Income tax expense		176		-		-		176
Net income (loss)	$	110,527	$	27,889	$	(70,357)	$	68,059

_____________________________

(1) Derivative contracts are carried at the corporate level, and interest and general and administrative expenses have not been allocated to its reportable segments as it would not be feasible to reasonably do so for the periods presented.

(2) Includes merger related costs in connection with the Merger for the year ended December 31, 2014 (see Note 3), and acquisition costs related to the Cardinal and TEAK Acquisitions for the year ended December 31, 2013 (see –Note 4), and the Cardinal Acquisition for the year ended December 31, 2012 (see –Note 4), which are carried at the corporate level.

	Years Ended December 31,
Capital Expenditures:	2014		2013		2012
Oklahoma	$	347,984	$	235,748	$	248,009
Texas		298,443		211,056		124,910
Corporate and other		1,320		3,756		614
	$	647,747	$	450,560	$	373,533

	December 31,		December 31,
Balance Sheet	2014		2013
Equity method investment in joint ventures:
Texas	$	177,212	$	162,511
Corporate and other		-		85,790
	$	177,212	$	248,301
Goodwill:
Oklahoma	$	178,762	$	178,762
Texas		187,001		189,810
	$	365,763	$	368,572
Total assets:
Oklahoma	$	2,553,802	$	2,265,231
Texas		2,045,305		1,872,165
Corporate and other		225,626		190,449
	$	4,824,733	$	4,327,845

The following table summarizes the Partnership’s natural gas and liquids sales by product or service for the periods indicated (in thousands):

	Years Ended December 31,
	2014		2013		2012
Natural gas and liquids sales:
Natural gas	$	1,138,110	$	708,817	$	396,867
NGLs		1,347,111		1,132,481		657,271
Condensate		142,094		118,095		85,234
Other		(5,887)		(249)		(2,111)
Total	$	2,621,428	$	1,959,144	$	1,137,261

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Summary Of Significant Accounting Policies (Schedule Of Weighted Average Number Of Units) (Details)	12 Months Ended			3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013
Weighted average common limited partner units (basic)	82,257,000	74,364,000	54,326,000
Add effect of participating securities, phantom units	1,713,000	0	812,000
Add effect of participating securities, convertible preferred units	14,414,000	0	0
Weighted average common limited partner units (diluted)	98,384,000	74,364,000	55,138,000
Phantom Unit Awards [Member]
Antidilutive securities excluded from computation of earnings per unit		1,240,000		1,543,000	1,476,000	1,455,000	967,000	1,055,000
Class D Preferred Units [Member]
Antidilutive securities excluded from computation of earnings per unit		9,110,000		13,964,000	13,709,000	13,518,000	9,013,000

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Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2014

Commitments And Contingencies

Schedule of Future Minimum Operating Lease Payments

Years Ended December 31:
2015	$	12,621
2016		8,610
2017		5,126
2018		4,469
2019		644
Thereafter		322
	$	31,792

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Fair Value Of Financial Instruments (Schedules Of Fair Value, Derivative Assets And Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Derivative assets, gross	$ 125,405	$ 8,953
Derivative liabilities, gross	0	(18,073)
Total derivatives, fair value, net	125,405	(9,100)
Fair Value, Measurements, Recurring [Member]
Derivative assets, gross	125,405	8,953
Derivative liabilities, gross	0	(18,073)
Total derivatives, fair value, net	125,405	(9,120)
Fair Value, Measurements, Recurring [Member] | Commodity Swaps [Member]
Derivative assets, gross	115,278	4,406
Derivative liabilities, gross	0	(18,073)
Fair Value, Measurements, Recurring [Member] | Commodity Options [Member]
Derivative assets, gross	10,127	4,547
Derivative liabilities, gross	0
Derivative Financial Instruments, Assets [Member] | Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Derivative assets, gross	0	0
Derivative liabilities, gross	0	0
Total derivatives, fair value, net	0	0
Derivative Financial Instruments, Assets [Member] | Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Commodity Swaps [Member]
Derivative assets, gross	0	0
Derivative liabilities, gross	0	0
Derivative Financial Instruments, Assets [Member] | Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Commodity Options [Member]
Derivative assets, gross	0	0
Derivative liabilities, gross	0
Derivative Financial Instruments, Assets [Member] | Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Derivative assets, gross	59,359	7,331
Derivative liabilities, gross	0	(4,695)
Total derivatives, fair value, net	59,359	2,636
Derivative Financial Instruments, Assets [Member] | Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Commodity Swaps [Member]
Derivative assets, gross	50,585	2,994
Derivative liabilities, gross	0	(4,695)
Derivative Financial Instruments, Assets [Member] | Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Commodity Options [Member]
Derivative assets, gross	8,774	4,337
Derivative liabilities, gross	0
Derivative Financial Instruments, Assets [Member] | Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Derivative assets, gross	66,046	1,622
Derivative liabilities, gross	0	(13,378)
Total derivatives, fair value, net	66,046	(11,756)
Derivative Financial Instruments, Assets [Member] | Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | Commodity Swaps [Member]
Derivative assets, gross	64,693	1,412
Derivative liabilities, gross	0	(13,378)
Derivative Financial Instruments, Assets [Member] | Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | Commodity Options [Member]
Derivative assets, gross	1,353	210
Derivative liabilities, gross	$ 0

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Quarterly Financial Data (Tables) (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenue	$ 799,978,000	$ 761,182,000	$ 713,956,000	$ 700,004,000	$ 580,128,000	$ 557,870,000	$ 560,939,000	$ 407,912,000	$ 2,975,120,000	$ 2,106,849,000	$ 1,246,020,000
Costs and expenses	(684,124,000)	(707,084,000)	(698,543,000)	(691,475,000)	(581,918,000)	(582,369,000)	(548,866,000)	(410,871,000)	(2,781,226,000)	(2,124,024,000)	(1,184,108,000)
Equity income (loss) in joint ventures	(3,543,000)	(4,711,000)	(3,875,000)	(1,878,000)	(4,422,000)	(1,882,000)	(472,000)	2,040,000	(14,007,000)	(4,736,000)	6,323,000
Gain (loss) on asset dispositions	(448,000)	(636,000)	48,465,000	0	0	0	(1,519,000)	0	47,381,000	(1,519,000)	0
Goodwill impairment loss					(43,866,000)	0	0	0	0	(43,866,000)	0
Loss on early extinguishment of debt					0	0	(19,000)	(26,582,000)	0	(26,601,000)	0
Income (loss) before tax	111,863,000	48,751,000	60,003,000	6,651,000	(50,078,000)	(26,381,000)	10,063,000	(27,501,000)	227,268,000	(93,897,000)	68,235,000
Income tax benefit	857,000	623,000	498,000	398,000	1,406,000	817,000	28,000	9,000	2,376,000	2,260,000	(176,000)
Net income (loss)	112,720,000	49,374,000	60,501,000	7,049,000	(48,672,000)	(25,564,000)	10,091,000	(27,492,000)	229,644,000	(91,637,000)	68,059,000
Income attributable to non-controlling interests	(2,708,000)	(4,029,000)	(3,965,000)	(2,462,000)	(2,282,000)	(1,514,000)	(1,810,000)	(1,369,000)	(13,164,000)	(6,975,000)	(6,010,000)
Preferred unit imputed dividend effect	(11,379,000)	(11,378,000)	(11,378,000)	(11,378,000)	(11,378,000)	(11,378,000)	(6,729,000)	0	(45,513,000)	(29,485,000)	0
Preferred unit dividends in kind	(11,019,000)	(11,408,000)	(10,406,000)	(9,719,000)	(9,170,000)	(9,072,000)	(5,341,000)	0	(42,552,000)	(23,583,000)	0
Preferred unit dividends	(2,609,000)	(2,609,000)	(2,609,000)	(406,000)					(8,233,000)	0	0
Net income (loss) attributable to common limited partners and the General Partner	85,005,000	19,950,000	32,143,000	(16,916,000)	(71,502,000)	(47,528,000)	(3,789,000)	(28,861,000)	120,182,000	(151,680,000)	62,049,000
Net income (loss) attributable to common limited partners per unit:
Basic	$ 0.76	$ 0.13	$ 0.27	$ (0.27)	$ (0.94)	$ (0.66)	$ (0.11)	$ (0.48)	$ 0.95	$ (2.23)	$ 0.95
Diluted	$ 0.76	$ 0.13	$ 0.27	$ (0.27)	$ (0.94)	$ (0.66)	$ (0.11)	$ (0.48)	$ 0.95	$ (2.23)	$ 0.95
Information Related To Quarterly Financial Data Abstract
Non-cash derivative gain (loss)	$ 112,900,000	$ 26,700,000	$ 300,000	$ 1,200,000	$ (15,400,000)	$ (23,600,000)	$ 24,300,000	$ (13,700,000)
Phantom Unit Awards [Member]
Information Related To Quarterly Financial Data Abstract
Antidilutive securities excluded from computation of earnings per unit				1,543,000	1,476,000	1,455,000	967,000	1,055,000		1,240,000
Class D Preferred Units [Member]
Information Related To Quarterly Financial Data Abstract
Antidilutive securities excluded from computation of earnings per unit				13,964,000	13,709,000	13,518,000	9,013,000			9,110,000

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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2014

Income Taxes

Schedule Of Components Of Income Tax Benefit

	Years Ended December 31,
	2014		2013		2012
Income tax expense (benefit):
Federal	$	(2,128)	$	(2,024)	$	158
State		(248)		(236)		18
Total income tax expense (benefit)	$	(2,376)	$	(2,260)	$	176

Schedule Of Deferred Tax Assets And Liabilities

	December 31,		December 31,
	2014		2013
Deferred tax assets:
Net operating loss tax carryforwards and alternative minimum tax credits	$	17,269	$	14,900
Deferred tax liabilities:
Excess of asset carrying value over tax basis		(48,183)		(48,190)
Net deferred tax liabilities	$	(30,914)	$	(33,290)

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Acquisitions (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended			0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 20, 2012	May 07, 2013
Net cash paid for acquisition	$ 0	$ 975,887	$ 633,610
Cardinal Midstream, LLC [Member]
Percentage of voting interests acquired				100.00%
Net cash paid for acquisition				598,890
Centrahoma Processing, LLC [Member]
Interest in majority owned subsidiary				60.00%
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners				40.00%
Business Combination Noncontrolling Interest Valuation Adjustment For Lack Of Control				5.00%
TEAK Midstream LLC [Member]
Percentage of voting interests acquired					100.00%
Net cash paid for acquisition					$ 974,671
T2 LaSalle (Member)
Equity method investment, ownership percentage					75.00%
T2 Eagle Ford (Member)
Equity method investment, ownership percentage					50.00%
T2 EF Co Gen (Member)
Equity method investment, ownership percentage					50.00%

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Other Assets (Details) (USD $)	12 Months Ended			0 Months Ended	1 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Mar. 12, 2013	Feb. 28, 2013
Deferred finance costs, noncurrent, net	$ 37,334,000	$ 41,094,000
Security deposits	2,238,000	5,367,000
Other long-term receivable	4,500,000	0
Other assets, noncurrent, total	44,072,000	46,461,000
Accumulated amortization of deferred finance costs	29,116,000	22,034,000
Payments of Financing Costs	3,300,000	22,800,000	14,400,000
Write off of deferred finance costs	0	5,300,000	0
Amortization of deferred finance costs	7,082,000	6,965,000	4,672,000
8.750% Senior notes - due 2018 [Member]
Write off of deferred finance costs		5,300,000
Extinguishment of debt		$ 365,800,000		$ 97,300,000	$ 268,400,000
Senior notes, interest rate		8.75%

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Equity (Narrative) (Class E Preferred Units) (Details) (USD $)	3 Months Ended				12 Months Ended			0 Months Ended		4 Months Ended	3 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Mar. 17, 2014	Jan. 27, 2015	Jul. 15, 2014	Oct. 15, 2014	Jan. 15, 2015
Preferred unit dividends	$ 2,609,000	$ 2,609,000	$ 2,609,000	$ 406,000	$ 8,233,000	$ 0	$ 0
Class E preferred limited partners' interests [Member]
Issuance of units and General Partner capital contribution, units								5,060,000
Preferred unit value per share								$ 25.00
Net proceeds from issuance of preferred limited partner units								122,300,000
Preferred unit distribution rate					8.25%
Preferred unit distribution payment terms					The Partnership made cumulative cash distributions on the Class E Preferred Units from the date of original issue. The cash distributions were payable quarterly in arrears on January 15, April 15, July 15, and October 15 of each year.
Preferred unit dividends					8,200,000
Class E preferred limited partners' interests [Member] | Subsequent Event [Member]
Preferred stock redemption terms									On January 27, 2015, the Partnership delivered notice of its intention to redeem all outstanding shares of its Class E Preferred Units. The redemption of the Class E Preferred Units will occur immediately prior to the close of the Merger (See Note 3). The Partnership expects the Merger to close on February 27, 2015 and, accordingly, the redemption would also be on February 27, 2015. The Class E Preferred Units will be redeemed at a redemption price of $25.00 per unit, plus an amount equal to all accumulated and unpaid distributions on the Class E Preferred Units as of the redemption date.
Distribution for the period March 17, 2014 through July 14, 2014 [Member] | Class E preferred limited partners' interests [Member]
Preferred unit cash distribution, per unit										$ 0.676040
Preferred unit cash distribution amount										3,421,000
Distribution for the period July 15, 2014 through October 14, 2014 [Member] | Class E preferred limited partners' interests [Member]
Preferred unit cash distribution, per unit											$ 0.515625
Preferred unit cash distribution amount											2,609,000
Distribution for the period October 15, 2014 through January 14, 2015 [Member] | Class E preferred limited partners' interests [Member] | Subsequent Event [Member]
Date of distribution												Jan. 15, 2015
Preferred unit cash distribution, per unit												$ 0.515625
Preferred unit cash distribution amount												$ 2,600,000

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Basis Of Presentation (Details)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Class E preferred limited partners' interests [Member]
Preferred unit distribution rate	8.25%
General Partner [Member]
General Partner, ownership interest	2.00%
Parent [Member] | Class D convertible preferred limited partners' interests [Member]
Partners' capital account, units	15,019,450	13,823,869
Parent [Member] | Class E preferred limited partners' interests [Member]
Partners' capital account, units	5,060,000
Preferred unit distribution rate	8.25%
Parent [Member] | Common Limited Partners [Member]
Limited partners, ownership interest	98.00%
Partners' capital account, units	84,536,064	80,585,148	64,556,010	53,617,183
Parent [Member] | Common Limited Partners [Member] | Atlas Energy LP [Member]
Partners' capital account, units	4,113,227
Parent [Member] | Common Limited Partners [Member] | General Partner [Member]
Partners' capital account, units	1,641,026
Parent [Member] | General Partner [Member]
General Partner, ownership interest	2.00%

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Targa Resources Partners LP Merger

12 Months Ended

Dec. 31, 2014

Targa Resources Partners LP Merger

Targa Resources Partners LP Merger

NOTE 3 – TARGA RESOURCES PARTNERS LP MERGER

On October 13, 2014, the Partnership, ATLS and the General Partner entered into a definitive merger agreement with Targa Resources Corp. (“TRC”), Targa Resources Partners LP (“TRP”) and certain other parties (the “Merger Agreement”), pursuant to which TRP agreed to acquire the Partnership through a merger of a newly-formed, wholly-owned subsidiary of TRP with and into the Partnership (the “Merger”).  Upon completion of the Merger, holders of the Partnership’s common units will have the right to receive (i) 0.5846 TRP common units and (ii) $1.26 in cash for each Partnership common unit.  Pursuant to the terms and conditions of the Merger Agreement, the Partnership exercised its right under the certificate of designation of the Class D Preferred Units to convert all outstanding Class D Preferred Units into common units, which occurred on January 22, 2015 (see Note 6 –Class D Preferred Units).  Additionally, on January 27, 2015, the Partnership announced its intention to exercise its right under the certificate of designation of the Class E Preferred Units to redeem the Class E Preferred Units.  TRP has agreed to deposit the funds for redemption with the paying agent (see Note 6 –Class E Preferred Units).

Concurrently with the Merger Agreement, ATLS announced that it entered into a definitive merger agreement with TRC (the “ATLS Merger Agreement”), pursuant to which TRC agreed to acquire ATLS through a merger of a newly formed wholly-owned subsidiary of TRC with and into ATLS (the “ATLS Merger”).  Upon completion of the ATLS Merger, holders of ATLS common units will have the right to receive (i) 0.1809 TRC shares of common stock, par value $0.001 per share, and (ii) $9.12 in cash, without interest, for each ATLS common unit.

Concurrently with the Merger Agreement and the ATLS Merger Agreement, ATLS agreed to (i) transfer its assets and liabilities, other than those related to the Partnership, to Atlas Energy Group, LLC (“Atlas Energy Group”), which is currently a subsidiary of ATLS and (ii) immediately prior to the ATLS Merger, effect a pro rata distribution to the ATLS unitholders of common units of Atlas Energy Group representing a 100% interest in Atlas Energy Group (the “Spin-Off”).

Following the announcement on October 13, 2014 of the Merger, the Partnership, the General Partner, ATLS, TRC, TRP, Targa Resources GP LLC, Trident MLP Merger Sub LLC and the members of the General Partner’s board of directors were named as defendants in five putative unitholder class action lawsuits challenging the Merger, one of which has subsequently been voluntarily dismissed.  In addition, ATLS, Atlas Energy GP LLC (“ATLS GP”), TRC, Trident GP Merger Sub LLC and members of ATLS GP’s board of directors were named as defendants in two putative unitholder class action lawsuits challenging the ATLS Merger, one of which has subsequently been voluntarily dismissed.  The lawsuits filed generally allege that the individual defendants breached their fiduciary duties and/or contractual obligations by, among other things, failing to obtain sufficient value for the Partnership’s and ATLS unitholders, respectively, in the Merger and ATLS Merger.  The plaintiffs seek, among other things, injunctive relief, unspecified compensatory and rescissory damages, attorney’s fees, other expenses and costs.

ATLS has also been named as a defendant in a putative class action and derivative lawsuit brought on January 28, 2015 and amended on February 23, 2015, by a shareholder of TRC against TRC and its directors.  The lawsuit generally alleges that the individual defendants breached their fiduciary duties by, among other things, approving the ATLS Merger and failing to disclose purportedly material information concerning the ATLS Merger.  The lawsuit seeks, among other things, injunctive relief, compensatory and rescissory damages, attorney’s fees, interest and costs.

All of the above referenced lawsuits, except for the January 2015 lawsuit and the two lawsuits that have been voluntarily dismissed, were settled, subject to court approval, pursuant to memoranda of understanding executed in February 2015, which are conditioned upon, among other things, the execution of an appropriate stipulations of settlement.  The stipulations of settlement will be subject to customary conditions, including, among other things, judicial approval of the proposed settlements contemplated by the memoranda of understanding.  There can be no assurance thatthe parties will ultimately enter into stipulations of settlement, that the court will approve the settlements, that the settlements will not be terminated according to their terms or that some unitholders will not opt-out of the settlements.

At this time, the Partnership cannot reasonably estimate the range of possible loss as a result of the lawsuits.  See “Item 3: Legal Proceedings” for more information regarding these lawsuits.  

The Partnership incurred $6.1 million of expenses related to the Merger for the year ended December 31, 2014, which is included in other expenses on its consolidated statements of operations.

The closing of the Merger is subject to approval by holders of a majority of the Partnership’s common units and other closing conditions, including the closing of the ATLS Merger and the Spin-Off.  On February 20, 2015, the Partnership held a special meeting, where holders of a majority of its common units approved the Merger.  In addition, at special meetings held on the same day: (i) a majority of the holders of ATLS common units approved the ATLS Merger and (ii) a majority of the holders of TRC common stock approved the issuance of TRC shares in connection with the Merger.  Completion of each of the ATLS Merger and the Spin-Off are also conditioned on the parties standing ready to complete the Merger.  The Merger is expected to close on February 27, 2015.

On February 27, 2015, the Partnership agreed to transfer 100% of the Partnership’s interest in gas gatheringassets located in the Appalachian Basin of Tennessee to the Partnership’s affiliate, Atlas Resource Partners, L.P. (NYSE: ARP) (“ARP”), for $1.0 million plus working capital adjustments, concurrent with the closing of the Merger on February 27, 2015.

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Property, Plant And Equipment (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Property, Plant And Equipment
Debt, Weighted Average Interest Rate	5.50%	5.80%	6.40%
Interest Costs, Capitalized During Period	$ 12.7	$ 7.5	$ 8.7
2015 Minimum lease receivable	3.2
2016 Minimum lease receivable	1.0
2017 Minimum lease receivable	0
2018 Minimum lease receivable	0
2019 Minimum lease receivable	$ 0

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Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2014

Benefit Plans

Schedule of Phantom Unit Activity

	Years Ended December 31,
	2014			2013			2012
	Number of Units	Fair Value(1)		Number of Units	Fair Value(1)		Number of Units	Fair Value(1)
Outstanding, beginning of period	1,446,553	$	36.32	1,053,242	$	33.21	394,489	$	21.63
Granted	738,727		33.03	744,997		38.96	907,637		34.94
Forfeited	(37,075)		37.09	(61,550)		36.11	(67,675)		29.83
Vested and issued(2)(3)	(463,916)		34.71	(290,136)		31.88	(181,209)		17.88
Outstanding, end of period(4)(5)	1,684,289	$	35.30	1,446,553	$	36.32	1,053,242	$	33.21
Non-cash compensation expense recognized (in thousands)		$	25,116		$	19,344		$	11,635

__________________________________

(1) Fair value based upon weighted average grant date.

(2) The intrinsic values for phantom unit awards vested and issued during the years ended December 31, 2014, 2013 and 2012 were $15.4 million, $10.7 million and $5.5 million, respectively.

(3) There were 4,684,  1,677 and 792 vested phantom units, which were settled for $155 thousand, $58 thousand and $26 thousand cash during the years ended December 31, 2014, 2013 and 2012, respectively.

(4) The aggregate intrinsic value for phantom unit awards outstanding at December 31, 2014 and 2013 was $45.9 million and $50.7 million, respectively.

There were 25,778 and 22,539 outstanding phantom unit awards at December 31, 2014 and 2013, respectively, which were classified as liabilities due to a cash option available on the related phantom unit awards.

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Summary Of Significant Accounting Policies (Policy)

12 Months Ended

Dec. 31, 2014

Summary Of Significant Accounting Policies

Principles of Consolidation and Non-Controlling Interest

Principles of Consolidation and Non-Controlling Interest

The consolidated financial statements include the accounts of the Partnership, the Operating Partnership, a Variable Interest Entity (“VIE”) of which the Partnership is the primary beneficiary, and the Operating Partnership’s wholly-owned and majority-owned subsidiaries.  The General Partner’s interest in the Operating Partnership is reported as part of its overall 2.0% general partner interest in the Partnership.  All material intercompany transactions have been eliminated.

The Partnership’s consolidated financial statements include its 95% interest in joint ventures, which individually own a 100% interest in the WestOK natural gas gathering system and processing plants and a 72.8% undivided interest in the WestTX natural gas gathering system and processing plants.  These joint ventures have a $1.9 billion note receivable from the holder of the non-controlling interest in the joint ventures, which is reflected within non-controlling interests on the Partnership’s consolidated balance sheets.

The Partnership’s consolidated financial statements also include its 60% interest in Centrahoma Processing LLC (“Centrahoma”).  The remaining 40% ownership interest is held by MarkWest Oklahoma Gas Company LLC (“MarkWest”), a wholly-owned subsidiary of MarkWest Energy Partners, L.P. (NYSE: MWE). 

The Partnership consolidates 100% of these joint ventures and reflects the non-controlling interest in the joint ventures on its statements of operations.  The Partnership also reflects the non-controlling interest in the net assets of the joint venture as a component of equity on its consolidated balance sheets.

The WestTX joint venture has a 72.8% undivided joint interest in the WestTX system, of which the remaining 27.2% interest is owned by Pioneer Natural Resources Company (NYSE: PXD) (“Pioneer”).  Due to the ownership of the WestTX system being in the form of an undivided interest, the WestTX joint venture proportionally consolidates its 72.8% ownership interest in the assets and liabilities and operating results of the WestTX system.

Comprehensive Income (Loss)

Comprehensive Income (Loss)

Comprehensive income (loss) includes net income (loss) and all other changes in the equity of a business during a period from transactions and other events and circumstances from non-owner sources that, under GAAP, have not been recognized in the calculation of net income (loss).  These changes, other than net income (loss), are referred to as “other comprehensive income (loss)” and, for the Partnership, only include the effective portion of changes in the fair value of unsettled derivative contracts, which were previously accounted for as cash flow hedges (see Note 11).  These contracts were wholly-owned by the Partnership and the related gains and losses were not shared with the non-controlling interests.  The Partnership does not have any other types of transactions that would be included within other comprehensive income (loss).  During the year ended December 31, 2012, the Partnership reclassified $4.4 million from other comprehensive income to natural gas and liquids sales within the Partnership’s consolidated statements of operations.  During the years ended December 31, 2014 and 2013, no amounts were reclassified from other comprehensive income and the Partnership had no amounts outstanding within accumulated other comprehensive income.

Equity Method Investments

Equity Method Investments

The Partnership’s consolidated financial statements include its previous interest in West Texas LPG Pipeline Limited Partnership (“WTLPG”), which was sold in May 2014 (see Note 5), and its interests in T2 LaSalle Gathering Company L.L.C. (“T2 LaSalle”), T2 Eagle Ford Gathering Company L.L.C. (“T2 Eagle Ford”), and T2 EF Cogeneration Holdings L.L.C. (“T2 Co-Gen”) (the “T2 Joint Ventures”), which were acquired as part of the acquisition of 100% of the equity interests of TEAK Midstream, LLC (“TEAK”) (the “TEAK Acquisition”) (see Notes 4 and 5).

The Partnership accounts for its investments in these joint ventures under the equity method of accounting.  Under this method, the Partnership records its proportionate share of the joint ventures’ net income (loss) as equity income (loss) on its consolidated statements of operations.  Investments in excess of the underlying net assets of equity method investees identifiable to property, plant and equipment or finite lived intangible assets are amortized over the useful life of the related assets and recorded as a reduction to equity investment on the Partnership’s consolidated balance sheet with an offsetting reduction to equity income on the Partnership’s consolidated statements of operations.  Excess investment representing equity method goodwill is not subject to amortization and is accounted for as a component of the investment.  No goodwill was recorded on the acquisition of WTLPG or the T2 Joint Ventures.  Equity method investments are subject to impairment evaluation as necessary when events and circumstances indicate the carrying value of an equity investment may be less than its fair value.  The Partnership noted no indicators of impairment for its equity method investments, and thus no impairment charges were recognized for the years ended December 31, 2014, 2013 and 2012.

Use of Estimates

Use of Estimates

The preparation of the Partnership’s consolidated financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities that exist at the date of the Partnership’s consolidated financial statements, as well as the reported amounts of revenue and expense during the reporting periods.  The Partnership’s consolidated financial statements are based on a number of significant estimates, including revenue and expense accruals, depreciation and amortization, asset impairment, the fair value of derivative instruments, the probability of forecasted transactions,the allocation of purchase price to the fair value of assets acquired and other items.  Actual results could differ from those estimates.

The natural gas industry principally conducts its business by processing actual transactions at the end of the month following the month of delivery.  Consequently, the most current month’s financial results were recorded using estimated volumes and commodity market prices.  Differences between estimated and actual amounts are recorded in the following month’s financial results.  Management of the Partnership believes the operating results presented represent actual results in all material respects (see “‒Revenue Recognition” accounting policy for further description).

Cash and Cash Equivalents

Cash and Cash Equivalents

The Partnership considers all highly liquid investments with a remaining maturity of three months or less at the time of purchase to be cash equivalents.  These cash equivalents consist principally of temporary investments of cash in short-term money market instruments.  Checks outstanding at the end of a period that exceed available cash balances held at the bank are considered to be book overdrafts and are reclassified to accounts payable.  At December 31, 2014 and 2013, the Partnership reclassified the balances related to book overdrafts of $23.9million and $28.8 million, respectively, from cash and cash equivalents to accounts payable on its consolidated balance sheets.

Receivables

Receivables

In evaluating the realizability of its accounts receivable, the Partnership performs ongoing credit evaluations of its customers and adjusts credit limits based upon payment history and the customer’s current creditworthiness, as determined by the Partnership’s review of its customers’ credit information.  The Partnership extends credit on an unsecured basis to many of its customers.  At December 31, 2014 and 2013, there were no material uncollectible accounts receivable.

NGL Linefill

NGL Linefill

NGL linefill represents amounts receivable for NGLs delivered to counterparties, for which the counterparty will pay at a designated later period at a price determined by the then current market price.  The Partnership’s NGL linefill held by some counterparties will be settled at various periods in the future and is defined as a Level 3 asset, which is valued at fair value using the same forward price curve utilized to value the Partnership’s NGL fixed price swaps.  The Partnership’s NGL linefill held by other counterparties is adjusted on a monthly basis according to the volumes delivered to the counterparties each period and is valued on a first in first out (“FIFO”) basis.  During the year ended December 31, 2014, the contracts related to this linefill on the WestTX and SouthTX systems were revised and the settlement and valuation was converted from a FIFO method to a fair value method.  The Partnership’s NGL linefill is included within prepaid expenses and other on its consolidated balance sheets.  See Note 12 for more information regarding the Partnership’s NGL linefill.

Property, Plant and Equipment

Property, Plant and Equipment

Property, plant and equipment are stated at cost or, upon acquisition of a business, at the fair value of the assets acquired.  Maintenance and repairs which generally do not extend the useful life of an asset for two or more years through the replacement of critical components are expensed as incurred.  Major renewals and improvements that generally extend the useful life of an asset for two or more years through the replacement of critical components are capitalized.  The Partnership capitalizes interest on borrowed funds related to capital projects for periods during which activities are in progress to bring these projects to their intended use.  Depreciation and amortization expense is based on cost less the estimated salvage value primarily using the straight-line method over the asset’s estimated useful life.  The Partnership follows the composite method of depreciation and has determined the composite groups to be the major asset classes of its gathering, processing and treating systems.  Under the composite depreciation method, any gain or loss upon disposition or retirement of pipeline, gas gathering, processing and treating components, is recorded to accumulated depreciation.  When entire pipeline systems, gas plants or other property and equipment are retired or sold, any gain or loss is included in the Partnership’s results of operations.

Leased property and equipment meeting capital lease criteria are capitalized based on the minimum payments required under the lease and are included within property, plant and equipment on the Partnership’s consolidated balance sheets (see Note 7).  Obligations under capital leases are accounted for as current and noncurrent liabilities and are included within debt on the Partnership’s consolidated balance sheets (see Note 14).  Amortization is calculated on a straight-line method based upon the estimated useful lives of the assets.

Impairment of Long-Lived Assets

Impairment of Long‑Lived Assets

The Partnership reviews its long‑lived assets for impairment whenever events or circumstances indicate the carrying amount of an asset may not be recoverable.  If it is determined an asset's estimated future undiscounted cash flows will not be sufficient to recover its carrying amount, an impairment charge will be recorded to reduce the carrying amount for that asset to its estimated fair value, if such carrying amount exceeds the fair value.  The fair value measurement of a long-lived asset is based on inputs that are not observable in the market and therefore represent Level 3 inputs (see “‒Fair Value of Financial Instruments”).  No impairment charges were recognized for the years ended December 31, 2014,  2013 and 2012.

Asset Retirement Obligation

Asset Retirement Obligation

The Partnership performs ongoing analysis of asset removal and site restoration costs that the Partnership may be required to perform under law or contract once an asset has been permanently taken out of service.  The Partnership has property, plant and equipment at locations owned by the Partnership and at sites leased or under right of way agreements.  The Partnership is under no contractual obligation to remove the assets at locations it owns.  In evaluating its asset retirement obligation, the Partnership reviews its lease agreements, right of way agreements, easements and permits to determine which agreements, if any, require an asset removal and restoration obligation.  Determination of the amounts to be recognized is based upon numerous estimates and assumptions, including expected settlement dates, future retirement costs, future inflation rates and the credit-adjusted-risk-free interest rates.  However, the Partnership was not able to reasonably measure the fair value of the asset retirement obligation as of December 31, 2014 or 2013 because the settlement dates were indeterminable.  Any cost incurred in the future to remove assets and restore sites will be expensed as incurred.

Goodwill

Goodwill

Goodwill is the cost of an acquisition less the fair value of the net identifiable assets of the acquired business.  Impairment testing for goodwill is done at the reporting unit level.  A reporting unit is an operating segment or one level below an operating segment (also known as a component).  A component of an operating segment is a reporting unit if the component constitutes a business for which discrete financial information is available, and segment management regularly reviews the operating results of that component.  The Partnership evaluates goodwill for impairment annually, on December 31st for all reporting units, except SouthTX, which is evaluated on April 30th.  The Partnership also evaluates goodwill for impairment whenever events or changes in circumstances indicate it is more likely than not the fair value of a reporting unit is less than its carrying amount.  The Partnership first assesses qualitative factors to evaluate whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount as the basis for determining whether it is necessary to perform the two-step goodwill impairment test.  If a two-step process goodwill impairment test is required, the first step involves comparing the fair value of the reporting unit, to which goodwill has been allocated with its carrying amount.  If the carrying amount of a reporting unit exceeds its fair value, the second step of the process involves comparing the implied fair value to the carrying value of the goodwill for that reporting unit.  If the carrying value of the goodwill of a reporting unit exceeds the implied fair value of that goodwill, the excess of the carrying value over the implied fair value is recognized as a reduction of goodwill on the Partnership’s consolidated balance sheets and a goodwill impairment loss on the Partnership’s consolidated statements of operations (see Note 8).

Intangible Assets

Intangible Assets

The Partnership amortizes intangible assets with finite useful lives over their estimated useful lives.  If an intangible asset has a finite useful life, but the precise length of that life is not known, that intangible asset must be amortized over the best estimate of its useful life.  At a minimum, the Partnership will assess the useful lives of all intangible assets on an annual basis, on December 31, to determine if adjustments are required.  The estimated useful life for the Partnership’s customer contract intangible assets is based upon the approximate average length of customer contracts in existence and expected renewals at the date of acquisition.  The estimated useful life for the Partnership’s customer relationship intangible assets is based upon the estimated average length of non-contracted customer relationships in existence at the date of acquisition, adjusted for management’s estimate of whether these individual relationships will continue in excess or less than the average length (see Note 8).

Derivative Instruments

Derivative Instruments

The Partnership enters into certain financial contracts to manage its exposure to movement in commodity prices and interest rates.  The Partnership manages and reports the derivative assets and liabilities on the basis of its net exposure to market risks and credit risks by counterparty, measured at fair value (see “‒Fair Value of Financial Instruments”).  The Partnership no longer applies hedge accounting for its derivatives; as such, changes in fair value of these derivatives are recognized immediately within derivative gain (loss), net in its consolidated statements of operations.  Prior to discontinuance of hedge accounting, the change in the fair value of these commodity derivative instruments was recognized in accumulated other comprehensive loss within equity on the Partnership’s consolidated balance sheets.  Amounts in accumulated other comprehensive loss were reclassified to the Partnership’s consolidated statements of operations at the time the originally hedged physical transactions affected earnings.  The Partnership has reclassified all earnings out of accumulated other comprehensive loss, within equity on the Partnership’s consolidated balance sheets and had no amounts in accumulated other comprehensive loss as of December 31, 2014 and 2013.

Fair Value of Financial Instruments

Fair Value of Financial Instruments

The Partnership uses a valuation framework based upon inputs that market participants use in pricing an asset or liability, which are classified into two categories:  observable inputs and unobservable inputs.  Observable inputs represent market data obtained from independent sources; whereas, unobservable inputs reflect the Partnership’s own market assumptions, which are used if observable inputs are not reasonably available without undue cost and effort.  These two types of inputs are further prioritized into the following hierarchy:

Level 1– Unadjusted quoted prices in active markets for identical, unrestricted assets and liabilities that the reporting entity has the ability to access at the measurement date.

Level 2 – Inputs other than quoted prices included within Level 1 that are observable for the asset and liability or can be corroborated with observable market data for substantially the entire contractual term of the asset or liability.

Level 3 – Unobservable inputs that reflect the entity’s own assumptions about the assumptions market participants would use in the pricing of the asset or liability and are consequently not based on market activity but rather through particular valuation techniques.

The Partnership uses a market approach fair value methodology to value the assets and liabilities for its outstanding derivative contracts (see Note 12).  The Partnership manages and reports the derivative assets and liabilities on the basis of its net exposure to market risks and credit risks by counterparty.  The Partnership has a financial risk management committee (the “Financial Risk Management Committee”), which sets the policies, procedures and valuation methods utilized by the Partnership to value its derivative contracts.  The Financial Risk Management Committee members include, among others, the Chief Executive Officer, the Chief Financial Officer and the Vice Chairman of the managing board of the General Partner.  The Financial Risk Management Committee receives daily reports and meets on a weekly basis to review the risk management portfolio and changes in the fair value in order to determine appropriate actions.

Income Taxes

Income Taxes

The Partnership is generally not subject to U.S. federal and most state income taxes.  The partners of the Partnership are liable for income tax in regard to their distributive share of the Partnership’s taxable income.  Such taxable income may vary substantially from net income (loss) reported in the accompanying consolidated financial statements.

The Partnership evaluates tax positions taken or expected to be taken in the course of preparing the Partnership’s tax returns and disallows the recognition of tax positions not deemed to meet a “more-likely-than-not” threshold of being sustained by the applicable tax authority.  The Partnership’s management does not believe it has any tax positions taken within its consolidated financial statements that would not meet this threshold.  The Partnership’s policy is to reflect interest and penalties related to uncertain tax positions, when and if they become applicable.  The Partnership has not recognized any potential interest or penalties in its consolidated financial statements as of December 31, 2014 or 2013.

The Partnership files Partnership Returns of Income in the U.S. and various state jurisdictions.  With few exceptions, the Partnership is no longer subject to income tax examinations by major tax authorities for years prior to 2011.  The Partnership is not currently being examined by any jurisdiction and is not aware of any potential examinations as of December 31, 2014 except for an ongoing examination by the Texas Comptroller of Public Accounts related to the Partnership’s Texas Franchise Tax for franchise report years 2008 through 2011.

APL Arkoma, Inc. is subject to federal and state income tax.  The Partnership’s corporate subsidiary accounts for income taxes under the asset and liability method.  Deferred income taxes are recognized for future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis and net operating loss and credit carryforwards.  Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled.  The effect of any tax rate change on deferred taxes is recognized in the period that includes the enactment date of the tax rate change.  Realization of deferred tax assets is assessed and, if not more likely than not, a valuation allowance is recorded to write down the deferred tax assets to their net realizable value.  The effective tax rate differs from the statutory rate due primarily to Partnership earnings that are generally not subject to federal and state income taxes at the Partnership level.  See Note 10 for discussion of the Partnership’s federal and state income tax expense (benefits) of its taxable subsidiary as well as the Partnership’s net deferred income tax assets (liabilities).

Unit-based Compensation

Unit-Based Compensation

All unit-based payments to employees are recognized in the financial statements based on their fair values on the date of grant and are classified as equity on the Partnership’s consolidated balance sheets.  Unit-based awards to non-employees, which have a cash option, are recognized in the financial statements based on their current fair value and are classified as liabilities on the Partnership’s consolidated balance sheets.  Compensation expense associated with unit-based payments is recognized within general and administrative expenses on the Partnership’s statements of operations from the date of the grant through the date of vesting, amortized on a straight-line method.  Generally, no expense is recorded for awards that do not vest due to forfeiture.  See Note 17 for more information regarding the Partnership’s unit-based compensation.

Net Income (Loss) Per Common Unit

Net Income (Loss) Per Common Unit

Basic net income (loss) attributable to common limited partners per unit is computed by dividing net income (loss) attributable to common limited partners by the weighted average number of common limited partner units outstanding during the period.  Net income (loss) attributable to common limited partners is determined by deducting net income attributable to participating securities, if applicable, and net income (loss) attributable to the General Partner’s and the preferred unitholders' interests.  The General Partner’s interest in net income (loss) is calculated on a quarterly basis based upon its 2.0% general partner interest and incentive distributions to be distributed for the quarter (see Note 6), with a priority allocation of net income to the General Partner’s incentive distributions, if any, in accordance with the partnership agreement, and the remaining net income (loss) allocated with respect to the General Partner’s and limited partners’ ownership interests.

The Partnership presents net income (loss) per unit under the two-class method for master limited partnerships,  which considers whether the incentive distributions of a master limited partnership represent a participating security when considered in the calculation of earnings per unit under the two-class method.  The two-class method considers whether the partnership agreement contains any contractual limitations concerning distributions to the incentive distribution rights that would impact the amount of earnings to allocate to the incentive distribution rights for each reporting period.  If distributions are contractually limited to the incentive distribution rights’ share of currently designated available cash for distributions as defined under the partnership agreement, undistributed earnings in excess of available cash should not be allocated to the incentive distribution rights.  Under the two-class method, management of the Partnership believes the partnership agreement contractually limits cash distributions to available cash; therefore, undistributed earnings are not allocated to the incentive distribution rights.

Unvested share-based payment awards that contain non-forfeitable rights to dividends or dividend equivalents (whether paid or unpaid) are participating securities and are included in the computation of earnings per unit pursuant to the two-class method.  The Partnership’s phantom unit awards, which consist of common units issuable under the terms of its long-term incentive plans and incentive compensation agreements (see Note 17), contain non-forfeitable rights to distribution equivalents of the Partnership.  The participation rights result in a non-contingent transfer of value each time the Partnership declares a distribution or distribution equivalent right during the award’s vesting period.  However, unless the contractual terms of the participating securities require the holders to share in the losses of the entity, net loss is not allocated to the participating securities.  Therefore, the net income (loss) utilized in the calculation of net income (loss) per unit must be determined based upon the allocation of only net income to the phantom units on a pro-rata basis.

Class D Preferred Units participate in distributions with the common limited partner units according to a predetermined formula (see Note 6), thus they are considered participating securities and are included in the computation of earnings per unit pursuant to the two-class method.  The participation rights result in a non-contingent transfer of value each time the Partnership declares a distribution.  However, the contractual terms of the Class D Preferred Units do not require the holders to share in the losses of the entity, therefore the net income (loss) utilized in the calculation of net income (loss) per unit must be determined based upon the allocation of only net income to the Class D Preferred Units on a pro-rata basis.

Class E Preferred Units do not participate in distributions with the common limited partner units according to a predetermined formula, but rather receive distributions based upon a set percentage rate (see Note 6), thus they are not considered participating securities.  However, income available to common limited partners is reduced by the distributions accumulated for the period on the Class E Preferred Units, whether declared or not, since the distributions on Class E Preferred Units are cumulative.

The following is a reconciliation of net income (loss) allocated to the General Partner and common limited partners for purposes of calculating net income (loss) attributable to common limited partners per unit (in thousands):

	Years Ended December 31,
	2014		2013		2012
Net income (loss)	$	229,644	$	(91,637)	$	68,059
Income attributable to non-controlling interests		(13,164)		(6,975)		(6,010)
Preferred unit imputed dividend effect		(45,513)		(29,485)		-
Preferred unit dividends in kind		(42,552)		(23,583)		-
Preferred unit dividends		(8,233)		-		-
Net income (loss) attributable to common limited partners and the General Partner		120,182		(151,680)		62,049
General Partner’s cash incentive distributions		24,576		17,646		8,583
General Partner’s ownership interest		1,922		(3,403)		1,075
Net income attributable to the General Partner’s ownership interests		26,498		14,243		9,658
Net income (loss) attributable to common limited partners		93,684		(165,923)		52,391
Net income attributable to participating securities – phantom units(1)		1,630		-		772
Net income attributable to participating securities – Class D Preferred Units(2)		13,932		-		-
Net income attributable to participating securities		15,562		-		772
Net income (loss) utilized in the calculation of net income (loss) attributable to common limited partners per unit	$	78,122	$	(165,923)	$	51,619

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(1) Net income attributable to common limited partners’ ownership interest is allocated to the phantom units on a pro-rata basis (weighted average phantom units outstanding as a percentage of the sum of the weighted average phantom units and common limited partner units outstanding).  For the year ended December 31, 2013, net loss attributable to common limited partners’ ownership interest is not allocated to approximately1,240,000weighted average phantom unitsbecause the contractual terms of the phantom units as participating securities do not require the holders to share in the losses of the entity.

(2) Net income attributable to common limited partners’ ownership interest is allocated to the Class D Preferred Units on a pro-rata basis (weighted average Class D Preferred Units outstanding, plus a contractual yield premium of 1.5%, as a percentage of the sum of the weighted average Class D Preferred Units and common limited partner units outstanding).  For the year ended December 31, 2013, net loss attributable to common limited partners’ ownership interest is not allocated to approximately 9,110,000weighted average Class D Preferred Units because the contractual terms of the Class D Preferred Units as participating securities do not require the holders to share in the losses of the entity.

Diluted net income (loss) attributable to common limited partners per unit is calculated by dividing net income (loss) attributable to common limited partners, plus income allocable to participating securities, by the sum of the weighted average number of common limited partner units outstanding plus the dilutive effect of outstanding participating securities and the effects of outstanding convertible securities.  The phantom units and Class D Preferred Units are participating securities included in the calculation of diluted net income (loss) attributable to common units, due to their participation rights and due to their dilution if converted.  The Class E Preferred Units are not participating securities and are not convertible and thus are not included in the units outstanding for calculation of diluted net income (loss) attributable to common limited partners per unit.

The following table sets forth the reconciliation of the Partnership’s weighted average number of common limited partner units used to compute basic net income (loss) attributable to common limited partners per unit with those used to compute diluted net income (loss) attributable to common limited partners per unit (in thousands):

	Years Ended December 31,
	2014	2013	2012
Weighted average number of common limited  partner units – basic	82,257	74,364	54,326
Add effect of dilutive securities – phantom  units(1)	1,713	-	812
Add effect of convertible preferred limited partner units(2)	14,414	-	-
Weighted average common limited partner units – diluted	98,384	74,364	55,138

Environmental Matters

Environmental Matters

The Partnership is subject to various federal, state and local laws and regulations relating to the protection of the environment.  The Partnership has established procedures for the ongoing evaluation of its operations, to identify potential environmental exposures and to comply with regulatory policies and procedures, including legislation related to greenhouse gas emissions.  Environmental expenditures that relate to current operations are expensed or capitalized as appropriate.  Expenditures that relate to an existing condition caused by past operations, and do not contribute to current or future revenue generation, are expensed.  Liabilities are recorded when environmental assessments and/or clean-ups are probable, and the costs can be reasonably estimated.  At this time, the Partnership is unable to assess the timing and/or effect of potential liabilities related to greenhouse gas emissions or other environmental issues.  The Partnership maintains insurance, which may cover, in whole or in part, certain environmental expenditures.  At December 31, 2014 and 2013, the Partnership had no material environmental matters requiring specific disclosure or requiring the recognition of a liability.

Segment Information

Segment Information

As a result of the sale of the Partnership’s subsidiaries that owned an interest in WTLPG on May 14, 2014 (see Note 5), the Partnership assessed its reportable segments and realigned its reportable segments into two new segments: Oklahoma Gathering and Processing (“Oklahoma”) and Texas Gathering and Processing (“Texas”).  These reportable segments reflect the way the Partnership will manage its operations going forward.  The Partnership has adjusted its segment presentation from the amounts previously presented to reflect the realignment of the segments.

The Oklahoma segment consists of the SouthOK and WestOK operations, which are comprised of natural gas gathering, processing and treating assets servicing drilling activity in the Anadarko, Ardmore and Arkoma Basins and which were formerly included within the previous Gathering and Processing segment.  Oklahoma revenues are primarily derived from the sale of residue gas and NGLs and the gathering, processing and treating of natural gas within the state of Oklahoma. 

The Texas segment consists of (1) the SouthTX and WestTX operations, which are comprised of natural gas gathering and processing assets servicing drilling activity in the Permian Basin and the Eagle Ford Shale play in southern Texas; and (2) the natural gas gathering assets located in the Barnett Shale play in Texas.  These assets were formerly included within the previous Gathering and Processing segment.  Texas revenues are primarily derived from the sale of residue gas and NGLs and the gathering and processing of natural gas within the state of Texas.

The previous Transportation and Treating segment, which consisted of (1) the gas treating operations, which own contract gas treating facilities located in various shale plays; and (2) the former subsidiaries’ interest in WTLPG, has been eliminated and the financial information is now included within Corporate and Other.  The natural gas gathering assets located in the Appalachian Basin in Tennessee, which were formerly included in the previous Gathering and Processing Segment, are now included within Corporate and Other.

Revenue Recognition

Revenue Recognition

The Partnership’s revenue primarily consists of the sale of natural gas and NGLs along with the fees earned from its gathering, processing and treating operations.  Under certain agreements, the Partnership purchases natural gas from producers and moves it into receipt points on its pipeline systems, and then sells the natural gas, and produced NGLs and condensate, if any, off delivery points on its systems.  Under other agreements, the Partnership gathers natural gas across its systems, from receipt to delivery point, without taking title to the natural gas.  Revenue associated with the physical sale of natural gas and NGLs is recognized upon physical delivery.  Revenue related to fees for providing natural gas gathering, processing and treating services is recognized based on throughput volumes during the period, with throughput volumes generally measured at the wellhead. 

The Partnership accrues unbilled revenue and the related purchase costs due to timing differences between the delivery of natural gas, NGLs, and condensate and the receipt of a delivery statement.  This revenue is recorded based upon volumetric data from the Partnership’s records and management estimates of the related gathering and compression fees and applicable product prices.  The Partnership had unbilled revenues at December 31, 2014 and 2013 of $175.3 million and $134.9 million, respectively, which are included in accounts receivable within its consolidated balance sheets.

Cost of Sales and Accruded Producer Liabilities

Cost of Sales and Accrued Producer Liabilities

The Partnership’s cost of sales primarily consists of sales proceeds required to be remitted to producers and shippers under POP contracts and natural gas purchases made in order to satisfy obligations under Keep-Whole contracts. Accrued producer liabilities on the Partnership’s consolidated balance sheets represent accrued purchase commitments payable to producers related to gas gathered and processed through its system under its POP and Keep-Whole contracts.  The following describes how cost of sales are recognized for POP contracts and Keep-Whole contracts:

POP Contracts.  These contracts provide for the Partnership to retain a negotiated percentage of the sale proceeds from residue gas and NGLs it gathers and processes, with the remainder being remitted to the producer.  In this contract-type, the Partnership and the producer are directly dependent on the volume of the commodity and its value; the Partnership effectively owns a percentage of the commodity and revenues are directly correlated to its market value.  The Partnership’s cost of sales are equal to the proceeds required to be remitted to the producers in connection with natural gas and liquids sold during the period.

Keep-Whole Contracts.  These contracts require the Partnership, as the processor and gatherer, to gather or purchase raw natural gas at current market rates per MMBTU.  The volume and energy content of gas gathered or purchased is based on the measurement at an agreed upon location (generally at the wellhead).  The BTU quantity of gas redelivered or sold at the tailgate of the Partnership’s processing facility may be lower than the BTU quantity purchased at the wellhead primarily due to the NGLs extracted from the natural gas when processed through a plant.  The Partnership must make up or “keep the producer whole” for this loss in BTU quantity.  To offset the make-up obligation, the Partnership retains the NGLs, which are extracted, and sells them for its own account.  The Partnership recognizes the purchases of natural gas during the period to keep producers whole as costs of sales under Keep-Whole contracts.  During 2014, the Partnership renegotiated most of its Keep-Whole contracts and converted them into POP contracts.  As a result, the Partnership does not expect Keep-Whole contracts to have any material impact to its cost of sales going forward.

Fee-based or POP contracts sometimes include fixed recovery terms, which mean products returned to the producer are calculated using an agreed NGL recovery factor, regardless of the volumes of NGLs actually recovered through processing.

Recently Adopted Accounting Standards

Recently Adopted Accounting Standards

In July 2013, the FASB issued Accounting Standard Update (“ASU”) 2013-11, “Income Taxes (Topic 740) –Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists,” which, among other changes, requires an entity to present an unrecognized tax benefit as a liability and not net with deferred tax assets when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward is not available at the reporting date to settle any additional income taxes under the tax law of the applicable jurisdiction that would result from the disallowance of a tax position or when the tax law of the applicable tax jurisdiction does not require, and the entity does not intend to, use the deferred tax asset for such purpose.  These requirements are effective for interim and annual reporting periods beginning after December 15, 2013.  These amendments should be applied prospectively to all unrecognized tax benefits that exist at the effective date.  Retrospective application is permitted.  The Partnership applied these requirements upon the adoption of ASU 2013-11 on January 1, 2014.  The application had no material impact on the Partnership’s financial position or results of operations.

Recently Issued Accounting Standard Updates

Recently Issued Accounting Standard Updates

On February 18, 2015, the FASB issued ASU 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis, which is intended to improve targeted areas of consolidation guidance for legal entities such as limited partnerships, limited liability corporations, and securitization structures.  The amendment simplifies the consolidation evaluation for reporting organizations that are required to evaluate whether they should consolidate certain legal entities.  The Partnership does not expect the ASU to impact how it currently consolidates its legal entities.  The amendments in this ASU will be effective for periods beginning after December 15, 2015, for public companies.  The Partnership plans to apply the amendment to annual and interim periods beginning on January 1, 2016.

In November 2014, the FASB issued ASU 2014-17, Business Combinations (Topic 805): Pushdown Accounting (a consensus of the FASB Emerging Issues Task Force).  The amendments in this ASU apply to the separate financial statements of an acquired entity and its subsidiaries upon the occurrence of an event in which an acquirer obtains control of the acquired entity.  The amendments provide an acquired entity with an option to apply pushdown accounting in its separate financial statements upon occurrence of an event in which an acquirer obtains control of the acquired entity.  An acquired entity may elect the option to apply pushdown accounting in the reporting period in which the change-in-control event occurs, or in a subsequent reporting period to the acquired entity’s most recent change-in-control event.The amendments in this ASU are effective on November 18, 2014.  After the effective date, the Partnership can make an election to apply the guidance to future change-in-control events or to its most recent change-in-control event.  The Partnership will analyze its option to apply pushdown accounting upon a change-in-control event, but does not expect the new standard to have a material impact on its financial position, results of operations and disclosures.

In August 2014, the FASB issued ASU 2014-15, Presentation of Financial Statements – Going Concern (Subtopic 205-40): Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern.  ASU 2014-15 is intended to define management’s responsibility to evaluate whether there is substantial doubt about an organization’s ability to continue as a going concern and to provide related footnote disclosures.  The amendments in ASU 2014-15 are effective for the annual period ending after December 15, 2016, and for annual periods and interim periods thereafter.  Early application is permitted.  The Partnership plans on applying the new standard for the annual period ending December 31, 2016.  The Partnership does not expect the new standard to have an impact on its disclosures.

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606).  ASU 2014-09 will supersede the revenue recognition requirements in Topic 605 “Revenue Recognition,” and most industry-specific guidance.  The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services.  The amendments in ASU 2014-09 are effective for interim and annual reporting periods beginning after December 15, 2016.  Early application is not permitted.  An entity should apply the amendments in this ASU using one of the following methods: (1) retrospectively to each prior reporting period presented, or (2) retrospectively with the cumulative effect of initially applying the standard recognized at the date of initial application.These requirements will be applied upon the application of ASU 2014-09 on January 1, 2017.  The Partnership is currently in the process of evaluating which method to use for application of ASU 2014-09 and is still determining the impacts of ASU 2014-09 on its financial position, results of operations and disclosures, however, the Partnership does not expect the new standard to have a material impact on the results of operations.

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Subsequent Events

12 Months Ended

Dec. 31, 2014

Subsequent Events

Subsequent Events

NOTE 22 – SUBSEQUENT EVENTS

On January 9, 2015, the Partnership declared a cash distribution of $0.64 per unit on its outstanding common limited partner units, representing the cash distribution for the quarter ended December 31, 2014.  The $62.2 million distribution, including $8.1 million to the General Partner for its general partner interest and incentive distribution rights, was paid on February 13, 2015 to unitholders of record at the close of business on January 21, 2015 (see Note 6).

On January 15, 2014, the Partnership paid a cash distribution of $0.515625 per unit, orapproximately $2.6 million, on its Class E Preferred Units, representing the cash distribution for the period October 15, 2014 through January 14, 2015 (See Note 6).

On January 15, 2015, TRP announced cash tender offers to redeem any and all of the outstanding $500.0 million aggregate principal amount of the 6.625% Senior Notes; $400.0 million aggregate principal amount of the 4.75% Senior Notes; and $650.0 million aggregate principal amount of the 5.875% Senior Notes (see Note 14).  TRP made the cash tender offers in connection with, and conditioned upon, the consummation of the Merger (see Note 3).  The Merger, however, is not conditioned on the consummation of the tender offers. On February 2, 2015, TRP announced as of January 29, 2015, it had received tenders pursuant to its previously announced cash tender offers on January 15, 2015 from holders representing:

· less than a majority of the total outstanding $500.0 million of the 6.625% Senior Notes;

· approximately 98.3% of the total outstanding $400.0 million of the 4.75% Senior Notes; and

· approximately 91.0% of the total outstanding $650.0 million of the 5.875% Senior Notes.

Also on February 2, 2015, TRP announced a change of control cash tender offer for any and all of the outstanding $500.0 million of the 6.625% Senior Notes.  TRP made the change of control cash tender offer in connection with, and conditioned upon, the consummation of the Merger.  The Merger, however, is not conditioned on the consummation of the change in control cash tender offer.  The change in control cash tender offer was made independently of TRP’s January 15, 2015 cash tender offers (see Note 14).

On January 22, 2015, the Partnership exercised its right under the Class D Certificate of Designation to convert all outstanding Class D Preferred Units and unpaid distributions into common limited partner units, based upon the Execution Date Unit Price of $29.75 per unit, as defined by the Class D Certificate of Designation.  As a result of the conversion, 15,389,575 common limited partner units were issued (see Note 6). 

On January 27, 2015, the Partnership delivered notice of its intention to redeem all outstanding shares of its Class E Preferred Units.  The redemption of the Class E Preferred Units will occur immediately prior to the close of the Merger (See Note 3).  The Partnership expects the Merger to close on February 27, 2015 and, accordingly, the redemption would also be on February 27, 2015.  The Class E Preferred Units will be redeemed at a redemption price of $25.00 per unit, plus an amount equal to all accumulated and unpaid distributions on the Class E Preferred Units as of the redemption date.TRP has agreed to deposit the funds for such redemption with the paying agent (see Note 6).

On February 20, 2015, the Partnership held a special meeting, where holders of a majority of its common units approved the Merger.  In addition, at special meetings held on the same day: (i) a majority of the holders of ATLS common units approved the ATLS Merger and (ii) a majority of the holders of TRC common stock approved the issuance of TRC shares in connection with the Merger.  Completion of each of the ATLS Merger and the Spin-Off are also conditioned on the parties standing ready to complete the Merger.  The Merger is expected to close on February 27, 2015 (see Note 3).

On February 27, 2015, the Partnership agreed to transfer 100% of the Partnership’s interest in gas gatheringassets located in the Appalachian Basin of Tennessee to the Partnership’s affiliate, ARP, for $1.0 million plus working capital adjustments, concurrent with the closing of the Merger on February 27, 2015.

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Equity Method Investments (Schedule Of Equity Method Investment In Joint Ventures) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Equity method investment in joint ventures	$ 177,212	$ 248,301
West Texas LPG Pipeline Limited Partnership [Member]
Equity method investment in joint ventures	0	85,790
T2 LaSalle (Member)
Equity method investment in joint ventures	55,911	50,534
T2 Eagle Ford (Member)
Equity method investment in joint ventures	109,517	97,437
T2 EF Co Gen (Member)
Equity method investment in joint ventures	$ 11,784	$ 14,540

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Segment Information (Tables)

12 Months Ended

Dec. 31, 2014

Segment Information

Schedule of Segment Reporting Information, by Segment

	Oklahoma		Texas		Corporate  and Other		Consolidated
Year Ended December 31, 2014:
Revenue:
Revenues – third party(1)	$	1,722,810	$	1,115,545	$	136,479	$	2,974,834
Revenues – affiliates		-		-		286		286
Total revenues		1,722,810		1,115,545		136,765		2,975,120
Costs and Expenses:
Natural gas and liquids cost of sales		1,383,137		908,777		-		2,291,914
Operating expenses		62,758		48,700		2,148		113,606
General and administrative(1)		-		-		73,943		73,943
Other expenses(2)		-		-		6,073		6,073
Depreciation and amortization		102,614		95,203		4,726		202,543
Interest expense(1)		-		-		93,147		93,147
Total costs and expenses		1,548,509		1,052,680		180,037		2,781,226
Equity income (loss) in joint ventures		-		(16,619)		2,612		(14,007)
Gain (loss) on asset disposition		(448)		-		47,829		47,381
Income before tax		173,853		46,246		7,169		227,268
Income tax benefit		(2,376)		-		-		(2,376)
Net income	$	176,229	$	46,246	$	7,169	$	229,644

	Oklahoma		Texas		Corporate  and Other		Consolidated
Year Ended December 31, 2013:
Revenue:
Revenues – third party(1)	$	1,385,342	$	743,412	$	(22,208)	$	2,106,546
Revenues – affiliates		-		-		303		303
Total revenues		1,385,342		743,412		(21,905)		2,106,849
Costs and Expenses:
Natural gas and liquids cost of sales		1,087,245		603,137		-		1,690,382
Operating expenses		58,848		33,716		1,963		94,527
General and administrative(1)		-		-		60,856		60,856
Other expenses(2)		-		-		20,005		20,005
Depreciation and amortization		98,240		65,797		4,580		168,617
Interest expense(1)		-		-		89,637		89,637
Total costs and expenses		1,244,333		702,650		177,041		2,124,024
Equity income (loss) in joint ventures		-		(9,724)		4,988		(4,736)
Loss on asset disposition		(1,519)		-		-		(1,519)
Goodwill impairment loss		-		-		(43,866)		(43,866)
Loss on early extinguishment of debt		-		-		(26,601)		(26,601)
Income (loss) before tax		139,490		31,038		(264,425)		(93,897)
Income tax benefit		(2,260)		-		-		(2,260)
Net income (loss)	$	141,750	$	31,038	$	(264,425)	$	(91,637)

	Oklahoma		Texas		Corporate  and Other		Consolidated
Year Ended December 31, 2012:
Revenue:
Revenues – third party(1)	$	757,909	$	459,103	$	28,573	$	1,245,585
Revenues – affiliates		-		-		435		435
Total revenues		757,909		459,103		29,008		1,246,020
Costs and Expenses:
Natural gas and liquids cost of sales		551,420		376,526		-		927,946
Operating expenses		39,627		21,712		759		62,098
General and administrative(1)		-		-		47,206		47,206
Other expenses(2)		5		(308)		15,372		15,069
Depreciation and amortization		56,154		33,284		591		90,029
Interest expense(1)		-		-		41,760		41,760
Total costs and expenses		647,206		431,214		105,688		1,184,108
Equity income in joint ventures		-		-		6,323		6,323
Income (loss) before tax		110,703		27,889		(70,357)		68,235
Income tax expense		176		-		-		176
Net income (loss)	$	110,527	$	27,889	$	(70,357)	$	68,059

_____________________________

(1) Derivative contracts are carried at the corporate level, and interest and general and administrative expenses have not been allocated to its reportable segments as it would not be feasible to reasonably do so for the periods presented.

(2) Includes merger related costs in connection with the Merger for the year ended December 31, 2014 (see Note 3), and acquisition costs related to the Cardinal and TEAK Acquisitions for the year ended December 31, 2013 (see –Note 4), and the Cardinal Acquisition for the year ended December 31, 2012 (see –Note 4), which are carried at the corporate level.

	Years Ended December 31,
Capital Expenditures:	2014		2013		2012
Oklahoma	$	347,984	$	235,748	$	248,009
Texas		298,443		211,056		124,910
Corporate and other		1,320		3,756		614
	$	647,747	$	450,560	$	373,533

	December 31,		December 31,
Balance Sheet	2014		2013
Equity method investment in joint ventures:
Texas	$	177,212	$	162,511
Corporate and other		-		85,790
	$	177,212	$	248,301
Goodwill:
Oklahoma	$	178,762	$	178,762
Texas		187,001		189,810
	$	365,763	$	368,572
Total assets:
Oklahoma	$	2,553,802	$	2,265,231
Texas		2,045,305		1,872,165
Corporate and other		225,626		190,449
	$	4,824,733	$	4,327,845

Schedule Of Natural Gas And Liquids Sales, by Products

	Years Ended December 31,
	2014		2013		2012
Natural gas and liquids sales:
Natural gas	$	1,138,110	$	708,817	$	396,867
NGLs		1,347,111		1,132,481		657,271
Condensate		142,094		118,095		85,234
Other		(5,887)		(249)		(2,111)
Total	$	2,621,428	$	1,959,144	$	1,137,261

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Summary Of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2014

Summary Of Significant Accounting Policies

Schedule Of Net Income (Loss) Allocated To The General Partner And Common Limited Partners

	Years Ended December 31,
	2014		2013		2012
Net income (loss)	$	229,644	$	(91,637)	$	68,059
Income attributable to non-controlling interests		(13,164)		(6,975)		(6,010)
Preferred unit imputed dividend effect		(45,513)		(29,485)		-
Preferred unit dividends in kind		(42,552)		(23,583)		-
Preferred unit dividends		(8,233)		-		-
Net income (loss) attributable to common limited partners and the General Partner		120,182		(151,680)		62,049
General Partner’s cash incentive distributions		24,576		17,646		8,583
General Partner’s ownership interest		1,922		(3,403)		1,075
Net income attributable to the General Partner’s ownership interests		26,498		14,243		9,658
Net income (loss) attributable to common limited partners		93,684		(165,923)		52,391
Net income attributable to participating securities – phantom units(1)		1,630		-		772
Net income attributable to participating securities – Class D Preferred Units(2)		13,932		-		-
Net income attributable to participating securities		15,562		-		772
Net income (loss) utilized in the calculation of net income (loss) attributable to common limited partners per unit	$	78,122	$	(165,923)	$	51,619

__________________________________

(1) Net income attributable to common limited partners’ ownership interest is allocated to the phantom units on a pro-rata basis (weighted average phantom units outstanding as a percentage of the sum of the weighted average phantom units and common limited partner units outstanding).  For the year ended December 31, 2013, net loss attributable to common limited partners’ ownership interest is not allocated to approximately1,240,000weighted average phantom unitsbecause the contractual terms of the phantom units as participating securities do not require the holders to share in the losses of the entity.

(2) Net income attributable to common limited partners’ ownership interest is allocated to the Class D Preferred Units on a pro-rata basis (weighted average Class D Preferred Units outstanding, plus a contractual yield premium of 1.5%, as a percentage of the sum of the weighted average Class D Preferred Units and common limited partner units outstanding).  For the year ended December 31, 2013, net loss attributable to common limited partners’ ownership interest is not allocated to approximately 9,110,000weighted average Class D Preferred Units because the contractual terms of the Class D Preferred Units as participating securities do not require the holders to share in the losses of the entity.

Schedule Of Weighted Average Number Of Units

	Years Ended December 31,
	2014	2013	2012
Weighted average number of common limited  partner units – basic	82,257	74,364	54,326
Add effect of dilutive securities – phantom  units(1)	1,713	-	812
Add effect of convertible preferred limited partner units(2)	14,414	-	-
Weighted average common limited partner units – diluted	98,384	74,364	55,138

__________________________________

(1) For the year ended December 31, 2013, approximately 1,240,000 weighted average phantom units were excluded from the computation of diluted net income (loss) attributable to common limited partners per unit, because the inclusion of such phantom units would have been anti-dilutive.

(2) For the year ended December 31, 2013, approximately 9,110,000 weighted average Class D Preferred Units were excluded from the computation of diluted net income (loss) attributable to common limited partners as the impact of the conversion would have been anti-dilutive.

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Acquisitions (Tables)

12 Months Ended

Dec. 31, 2014

Cardinal Midstream, LLC [Member]

Final Values Assigned To Assets Acquired And Liabilities Assumed

Cash	$	1,184
Accounts receivable		13,783
Prepaid expenses and other		1,289
Property, plant and equipment		246,787
Intangible assets		232,740
Goodwill		214,090
Total assets acquired		709,873
Current portion of long-term debt		(341)
Accounts payable and accrued liabilities		(14,596)
Deferred tax liability, net		(35,353)
Long-term debt, less current portion		(604)
Total liabilities acquired		(50,894)
Non-controlling interest		(58,905)
Net assets acquired		600,074
Less cash received		(1,184)
Net cash paid for acquisition	$	598,890

TEAK Midstream LLC [Member]

Final Values Assigned To Assets Acquired And Liabilities Assumed

Cash	$	8,074
Accounts receivable		11,055
Prepaid expenses and other		1,626
Property, plant and equipment		197,683
Intangible assets		430,000
Goodwill		186,050
Equity method investment in joint ventures		184,327
Total assets acquired		1,018,815
Accounts payable and accrued liabilities		(34,995)
Other long term liabilities		(1,075)
Total liabilities acquired		(36,070)
Net assets acquired		982,745
Less cash received		(8,074)
Net cash paid for acquisition	$	974,671

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Summary Of Significant Accounting Policies

12 Months Ended

Dec. 31, 2014

Summary Of Significant Accounting Policies

Summary Of Significant Accounting Policies

NOTE 2 – SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Principles of Consolidation and Non-Controlling Interest

The consolidated financial statements include the accounts of the Partnership, the Operating Partnership, a Variable Interest Entity (“VIE”) of which the Partnership is the primary beneficiary, and the Operating Partnership’s wholly-owned and majority-owned subsidiaries.  The General Partner’s interest in the Operating Partnership is reported as part of its overall 2.0% general partner interest in the Partnership.  All material intercompany transactions have been eliminated.

The Partnership’s consolidated financial statements include its 95% interest in joint ventures, which individually own a 100% interest in the WestOK natural gas gathering system and processing plants and a 72.8% undivided interest in the WestTX natural gas gathering system and processing plants.  These joint ventures have a $1.9 billion note receivable from the holder of the non-controlling interest in the joint ventures, which is reflected within non-controlling interests on the Partnership’s consolidated balance sheets.

The Partnership’s consolidated financial statements also include its 60% interest in Centrahoma Processing LLC (“Centrahoma”).  The remaining 40% ownership interest is held by MarkWest Oklahoma Gas Company LLC (“MarkWest”), a wholly-owned subsidiary of MarkWest Energy Partners, L.P. (NYSE: MWE). 

The Partnership consolidates 100% of these joint ventures and reflects the non-controlling interest in the joint ventures on its statements of operations.  The Partnership also reflects the non-controlling interest in the net assets of the joint venture as a component of equity on its consolidated balance sheets.

The WestTX joint venture has a 72.8% undivided joint interest in the WestTX system, of which the remaining 27.2% interest is owned by Pioneer Natural Resources Company (NYSE: PXD) (“Pioneer”).  Due to the ownership of the WestTX system being in the form of an undivided interest, the WestTX joint venture proportionally consolidates its 72.8% ownership interest in the assets and liabilities and operating results of the WestTX system.

Comprehensive Income (Loss)

Comprehensive income (loss) includes net income (loss) and all other changes in the equity of a business during a period from transactions and other events and circumstances from non-owner sources that, under GAAP, have not been recognized in the calculation of net income (loss).  These changes, other than net income (loss), are referred to as “other comprehensive income (loss)” and, for the Partnership, only include the effective portion of changes in the fair value of unsettled derivative contracts, which were previously accounted for as cash flow hedges (see Note 11).  These contracts were wholly-owned by the Partnership and the related gains and losses were not shared with the non-controlling interests.  The Partnership does not have any other types of transactions that would be included within other comprehensive income (loss).  During the year ended December 31, 2012, the Partnership reclassified $4.4 million from other comprehensive income to natural gas and liquids sales within the Partnership’s consolidated statements of operations.  During the years ended December 31, 2014 and 2013, no amounts were reclassified from other comprehensive income and the Partnership had no amounts outstanding within accumulated other comprehensive income.

Equity Method Investments

The Partnership’s consolidated financial statements include its previous interest in West Texas LPG Pipeline Limited Partnership (“WTLPG”), which was sold in May 2014 (see Note 5), and its interests in T2 LaSalle Gathering Company L.L.C. (“T2 LaSalle”), T2 Eagle Ford Gathering Company L.L.C. (“T2 Eagle Ford”), and T2 EF Cogeneration Holdings L.L.C. (“T2 Co-Gen”) (the “T2 Joint Ventures”), which were acquired as part of the acquisition of 100% of the equity interests of TEAK Midstream, LLC (“TEAK”) (the “TEAK Acquisition”) (see Notes 4 and 5).

The Partnership accounts for its investments in these joint ventures under the equity method of accounting.  Under this method, the Partnership records its proportionate share of the joint ventures’ net income (loss) as equity income (loss) on its consolidated statements of operations.  Investments in excess of the underlying net assets of equity method investees identifiable to property, plant and equipment or finite lived intangible assets are amortized over the useful life of the related assets and recorded as a reduction to equity investment on the Partnership’s consolidated balance sheet with an offsetting reduction to equity income on the Partnership’s consolidated statements of operations.  Excess investment representing equity method goodwill is not subject to amortization and is accounted for as a component of the investment.  No goodwill was recorded on the acquisition of WTLPG or the T2 Joint Ventures.  Equity method investments are subject to impairment evaluation as necessary when events and circumstances indicate the carrying value of an equity investment may be less than its fair value.  The Partnership noted no indicators of impairment for its equity method investments, and thus no impairment charges were recognized for the years ended December 31, 2014, 2013 and 2012.

Use of Estimates

The preparation of the Partnership’s consolidated financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities that exist at the date of the Partnership’s consolidated financial statements, as well as the reported amounts of revenue and expense during the reporting periods.  The Partnership’s consolidated financial statements are based on a number of significant estimates, including revenue and expense accruals, depreciation and amortization, asset impairment, the fair value of derivative instruments, the probability of forecasted transactions,the allocation of purchase price to the fair value of assets acquired and other items.  Actual results could differ from those estimates.

The natural gas industry principally conducts its business by processing actual transactions at the end of the month following the month of delivery.  Consequently, the most current month’s financial results were recorded using estimated volumes and commodity market prices.  Differences between estimated and actual amounts are recorded in the following month’s financial results.  Management of the Partnership believes the operating results presented represent actual results in all material respects (see “‒Revenue Recognition” accounting policy for further description).

Cash and Cash Equivalents

The Partnership considers all highly liquid investments with a remaining maturity of three months or less at the time of purchase to be cash equivalents.  These cash equivalents consist principally of temporary investments of cash in short-term money market instruments.  Checks outstanding at the end of a period that exceed available cash balances held at the bank are considered to be book overdrafts and are reclassified to accounts payable.  At December 31, 2014 and 2013, the Partnership reclassified the balances related to book overdrafts of $23.9million and $28.8 million, respectively, from cash and cash equivalents to accounts payable on its consolidated balance sheets.

Receivables

In evaluating the realizability of its accounts receivable, the Partnership performs ongoing credit evaluations of its customers and adjusts credit limits based upon payment history and the customer’s current creditworthiness, as determined by the Partnership’s review of its customers’ credit information.  The Partnership extends credit on an unsecured basis to many of its customers.  At December 31, 2014 and 2013, there were no material uncollectible accounts receivable.

NGL Linefill

NGL linefill represents amounts receivable for NGLs delivered to counterparties, for which the counterparty will pay at a designated later period at a price determined by the then current market price.  The Partnership’s NGL linefill held by some counterparties will be settled at various periods in the future and is defined as a Level 3 asset, which is valued at fair value using the same forward price curve utilized to value the Partnership’s NGL fixed price swaps.  The Partnership’s NGL linefill held by other counterparties is adjusted on a monthly basis according to the volumes delivered to the counterparties each period and is valued on a first in first out (“FIFO”) basis.  During the year ended December 31, 2014, the contracts related to this linefill on the WestTX and SouthTX systems were revised and the settlement and valuation was converted from a FIFO method to a fair value method.  The Partnership’s NGL linefill is included within prepaid expenses and other on its consolidated balance sheets.  See Note 12 for more information regarding the Partnership’s NGL linefill.

Property, Plant and Equipment

Property, plant and equipment are stated at cost or, upon acquisition of a business, at the fair value of the assets acquired.  Maintenance and repairs which generally do not extend the useful life of an asset for two or more years through the replacement of critical components are expensed as incurred.  Major renewals and improvements that generally extend the useful life of an asset for two or more years through the replacement of critical components are capitalized.  The Partnership capitalizes interest on borrowed funds related to capital projects for periods during which activities are in progress to bring these projects to their intended use.  Depreciation and amortization expense is based on cost less the estimated salvage value primarily using the straight-line method over the asset’s estimated useful life.  The Partnership follows the composite method of depreciation and has determined the composite groups to be the major asset classes of its gathering, processing and treating systems.  Under the composite depreciation method, any gain or loss upon disposition or retirement of pipeline, gas gathering, processing and treating components, is recorded to accumulated depreciation.  When entire pipeline systems, gas plants or other property and equipment are retired or sold, any gain or loss is included in the Partnership’s results of operations.

Leased property and equipment meeting capital lease criteria are capitalized based on the minimum payments required under the lease and are included within property, plant and equipment on the Partnership’s consolidated balance sheets (see Note 7).  Obligations under capital leases are accounted for as current and noncurrent liabilities and are included within debt on the Partnership’s consolidated balance sheets (see Note 14).  Amortization is calculated on a straight-line method based upon the estimated useful lives of the assets.

Impairment of Long‑Lived Assets

The Partnership reviews its long‑lived assets for impairment whenever events or circumstances indicate the carrying amount of an asset may not be recoverable.  If it is determined an asset's estimated future undiscounted cash flows will not be sufficient to recover its carrying amount, an impairment charge will be recorded to reduce the carrying amount for that asset to its estimated fair value, if such carrying amount exceeds the fair value.  The fair value measurement of a long-lived asset is based on inputs that are not observable in the market and therefore represent Level 3 inputs (see “‒Fair Value of Financial Instruments”).  No impairment charges were recognized for the years ended December 31, 2014,  2013 and 2012.

Asset Retirement Obligation

The Partnership performs ongoing analysis of asset removal and site restoration costs that the Partnership may be required to perform under law or contract once an asset has been permanently taken out of service.  The Partnership has property, plant and equipment at locations owned by the Partnership and at sites leased or under right of way agreements.  The Partnership is under no contractual obligation to remove the assets at locations it owns.  In evaluating its asset retirement obligation, the Partnership reviews its lease agreements, right of way agreements, easements and permits to determine which agreements, if any, require an asset removal and restoration obligation.  Determination of the amounts to be recognized is based upon numerous estimates and assumptions, including expected settlement dates, future retirement costs, future inflation rates and the credit-adjusted-risk-free interest rates.  However, the Partnership was not able to reasonably measure the fair value of the asset retirement obligation as of December 31, 2014 or 2013 because the settlement dates were indeterminable.  Any cost incurred in the future to remove assets and restore sites will be expensed as incurred.

Goodwill

Goodwill is the cost of an acquisition less the fair value of the net identifiable assets of the acquired business.  Impairment testing for goodwill is done at the reporting unit level.  A reporting unit is an operating segment or one level below an operating segment (also known as a component).  A component of an operating segment is a reporting unit if the component constitutes a business for which discrete financial information is available, and segment management regularly reviews the operating results of that component.  The Partnership evaluates goodwill for impairment annually, on December 31st for all reporting units, except SouthTX, which is evaluated on April 30th.  The Partnership also evaluates goodwill for impairment whenever events or changes in circumstances indicate it is more likely than not the fair value of a reporting unit is less than its carrying amount.  The Partnership first assesses qualitative factors to evaluate whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount as the basis for determining whether it is necessary to perform the two-step goodwill impairment test.  If a two-step process goodwill impairment test is required, the first step involves comparing the fair value of the reporting unit, to which goodwill has been allocated with its carrying amount.  If the carrying amount of a reporting unit exceeds its fair value, the second step of the process involves comparing the implied fair value to the carrying value of the goodwill for that reporting unit.  If the carrying value of the goodwill of a reporting unit exceeds the implied fair value of that goodwill, the excess of the carrying value over the implied fair value is recognized as a reduction of goodwill on the Partnership’s consolidated balance sheets and a goodwill impairment loss on the Partnership’s consolidated statements of operations (see Note 8).

Intangible Assets

The Partnership amortizes intangible assets with finite useful lives over their estimated useful lives.  If an intangible asset has a finite useful life, but the precise length of that life is not known, that intangible asset must be amortized over the best estimate of its useful life.  At a minimum, the Partnership will assess the useful lives of all intangible assets on an annual basis, on December 31, to determine if adjustments are required.  The estimated useful life for the Partnership’s customer contract intangible assets is based upon the approximate average length of customer contracts in existence and expected renewals at the date of acquisition.  The estimated useful life for the Partnership’s customer relationship intangible assets is based upon the estimated average length of non-contracted customer relationships in existence at the date of acquisition, adjusted for management’s estimate of whether these individual relationships will continue in excess or less than the average length (see Note 8).

Derivative Instruments

The Partnership enters into certain financial contracts to manage its exposure to movement in commodity prices and interest rates.  The Partnership manages and reports the derivative assets and liabilities on the basis of its net exposure to market risks and credit risks by counterparty, measured at fair value (see “‒Fair Value of Financial Instruments”).  The Partnership no longer applies hedge accounting for its derivatives; as such, changes in fair value of these derivatives are recognized immediately within derivative gain (loss), net in its consolidated statements of operations.  Prior to discontinuance of hedge accounting, the change in the fair value of these commodity derivative instruments was recognized in accumulated other comprehensive loss within equity on the Partnership’s consolidated balance sheets.  Amounts in accumulated other comprehensive loss were reclassified to the Partnership’s consolidated statements of operations at the time the originally hedged physical transactions affected earnings.  The Partnership has reclassified all earnings out of accumulated other comprehensive loss, within equity on the Partnership’s consolidated balance sheets and had no amounts in accumulated other comprehensive loss as of December 31, 2014 and 2013.

Fair Value of Financial Instruments

The Partnership uses a valuation framework based upon inputs that market participants use in pricing an asset or liability, which are classified into two categories:  observable inputs and unobservable inputs.  Observable inputs represent market data obtained from independent sources; whereas, unobservable inputs reflect the Partnership’s own market assumptions, which are used if observable inputs are not reasonably available without undue cost and effort.  These two types of inputs are further prioritized into the following hierarchy:

Level 1– Unadjusted quoted prices in active markets for identical, unrestricted assets and liabilities that the reporting entity has the ability to access at the measurement date.

Level 2 – Inputs other than quoted prices included within Level 1 that are observable for the asset and liability or can be corroborated with observable market data for substantially the entire contractual term of the asset or liability.

Level 3 – Unobservable inputs that reflect the entity’s own assumptions about the assumptions market participants would use in the pricing of the asset or liability and are consequently not based on market activity but rather through particular valuation techniques.

The Partnership uses a market approach fair value methodology to value the assets and liabilities for its outstanding derivative contracts (see Note 12).  The Partnership manages and reports the derivative assets and liabilities on the basis of its net exposure to market risks and credit risks by counterparty.  The Partnership has a financial risk management committee (the “Financial Risk Management Committee”), which sets the policies, procedures and valuation methods utilized by the Partnership to value its derivative contracts.  The Financial Risk Management Committee members include, among others, the Chief Executive Officer, the Chief Financial Officer and the Vice Chairman of the managing board of the General Partner.  The Financial Risk Management Committee receives daily reports and meets on a weekly basis to review the risk management portfolio and changes in the fair value in order to determine appropriate actions.

Income Taxes

The Partnership is generally not subject to U.S. federal and most state income taxes.  The partners of the Partnership are liable for income tax in regard to their distributive share of the Partnership’s taxable income.  Such taxable income may vary substantially from net income (loss) reported in the accompanying consolidated financial statements.

The Partnership evaluates tax positions taken or expected to be taken in the course of preparing the Partnership’s tax returns and disallows the recognition of tax positions not deemed to meet a “more-likely-than-not” threshold of being sustained by the applicable tax authority.  The Partnership’s management does not believe it has any tax positions taken within its consolidated financial statements that would not meet this threshold.  The Partnership’s policy is to reflect interest and penalties related to uncertain tax positions, when and if they become applicable.  The Partnership has not recognized any potential interest or penalties in its consolidated financial statements as of December 31, 2014 or 2013.

The Partnership files Partnership Returns of Income in the U.S. and various state jurisdictions.  With few exceptions, the Partnership is no longer subject to income tax examinations by major tax authorities for years prior to 2011.  The Partnership is not currently being examined by any jurisdiction and is not aware of any potential examinations as of December 31, 2014 except for an ongoing examination by the Texas Comptroller of Public Accounts related to the Partnership’s Texas Franchise Tax for franchise report years 2008 through 2011.

APL Arkoma, Inc. is subject to federal and state income tax.  The Partnership’s corporate subsidiary accounts for income taxes under the asset and liability method.  Deferred income taxes are recognized for future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis and net operating loss and credit carryforwards.  Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled.  The effect of any tax rate change on deferred taxes is recognized in the period that includes the enactment date of the tax rate change.  Realization of deferred tax assets is assessed and, if not more likely than not, a valuation allowance is recorded to write down the deferred tax assets to their net realizable value.  The effective tax rate differs from the statutory rate due primarily to Partnership earnings that are generally not subject to federal and state income taxes at the Partnership level.  See Note 10 for discussion of the Partnership’s federal and state income tax expense (benefits) of its taxable subsidiary as well as the Partnership’s net deferred income tax assets (liabilities).

Unit-Based Compensation

All unit-based payments to employees are recognized in the financial statements based on their fair values on the date of grant and are classified as equity on the Partnership’s consolidated balance sheets.  Unit-based awards to non-employees, which have a cash option, are recognized in the financial statements based on their current fair value and are classified as liabilities on the Partnership’s consolidated balance sheets.  Compensation expense associated with unit-based payments is recognized within general and administrative expenses on the Partnership’s statements of operations from the date of the grant through the date of vesting, amortized on a straight-line method.  Generally, no expense is recorded for awards that do not vest due to forfeiture.  See Note 17 for more information regarding the Partnership’s unit-based compensation.

Net Income (Loss) Per Common Unit

Basic net income (loss) attributable to common limited partners per unit is computed by dividing net income (loss) attributable to common limited partners by the weighted average number of common limited partner units outstanding during the period.  Net income (loss) attributable to common limited partners is determined by deducting net income attributable to participating securities, if applicable, and net income (loss) attributable to the General Partner’s and the preferred unitholders' interests.  The General Partner’s interest in net income (loss) is calculated on a quarterly basis based upon its 2.0% general partner interest and incentive distributions to be distributed for the quarter (see Note 6), with a priority allocation of net income to the General Partner’s incentive distributions, if any, in accordance with the partnership agreement, and the remaining net income (loss) allocated with respect to the General Partner’s and limited partners’ ownership interests.

The Partnership presents net income (loss) per unit under the two-class method for master limited partnerships,  which considers whether the incentive distributions of a master limited partnership represent a participating security when considered in the calculation of earnings per unit under the two-class method.  The two-class method considers whether the partnership agreement contains any contractual limitations concerning distributions to the incentive distribution rights that would impact the amount of earnings to allocate to the incentive distribution rights for each reporting period.  If distributions are contractually limited to the incentive distribution rights’ share of currently designated available cash for distributions as defined under the partnership agreement, undistributed earnings in excess of available cash should not be allocated to the incentive distribution rights.  Under the two-class method, management of the Partnership believes the partnership agreement contractually limits cash distributions to available cash; therefore, undistributed earnings are not allocated to the incentive distribution rights.

Unvested share-based payment awards that contain non-forfeitable rights to dividends or dividend equivalents (whether paid or unpaid) are participating securities and are included in the computation of earnings per unit pursuant to the two-class method.  The Partnership’s phantom unit awards, which consist of common units issuable under the terms of its long-term incentive plans and incentive compensation agreements (see Note 17), contain non-forfeitable rights to distribution equivalents of the Partnership.  The participation rights result in a non-contingent transfer of value each time the Partnership declares a distribution or distribution equivalent right during the award’s vesting period.  However, unless the contractual terms of the participating securities require the holders to share in the losses of the entity, net loss is not allocated to the participating securities.  Therefore, the net income (loss) utilized in the calculation of net income (loss) per unit must be determined based upon the allocation of only net income to the phantom units on a pro-rata basis.

Class D Preferred Units participate in distributions with the common limited partner units according to a predetermined formula (see Note 6), thus they are considered participating securities and are included in the computation of earnings per unit pursuant to the two-class method.  The participation rights result in a non-contingent transfer of value each time the Partnership declares a distribution.  However, the contractual terms of the Class D Preferred Units do not require the holders to share in the losses of the entity, therefore the net income (loss) utilized in the calculation of net income (loss) per unit must be determined based upon the allocation of only net income to the Class D Preferred Units on a pro-rata basis.

Class E Preferred Units do not participate in distributions with the common limited partner units according to a predetermined formula, but rather receive distributions based upon a set percentage rate (see Note 6), thus they are not considered participating securities.  However, income available to common limited partners is reduced by the distributions accumulated for the period on the Class E Preferred Units, whether declared or not, since the distributions on Class E Preferred Units are cumulative.

The following is a reconciliation of net income (loss) allocated to the General Partner and common limited partners for purposes of calculating net income (loss) attributable to common limited partners per unit (in thousands):

	Years Ended December 31,
	2014		2013		2012
Net income (loss)	$	229,644	$	(91,637)	$	68,059
Income attributable to non-controlling interests		(13,164)		(6,975)		(6,010)
Preferred unit imputed dividend effect		(45,513)		(29,485)		-
Preferred unit dividends in kind		(42,552)		(23,583)		-
Preferred unit dividends		(8,233)		-		-
Net income (loss) attributable to common limited partners and the General Partner		120,182		(151,680)		62,049
General Partner’s cash incentive distributions		24,576		17,646		8,583
General Partner’s ownership interest		1,922		(3,403)		1,075
Net income attributable to the General Partner’s ownership interests		26,498		14,243		9,658
Net income (loss) attributable to common limited partners		93,684		(165,923)		52,391
Net income attributable to participating securities – phantom units(1)		1,630		-		772
Net income attributable to participating securities – Class D Preferred Units(2)		13,932		-		-
Net income attributable to participating securities		15,562		-		772
Net income (loss) utilized in the calculation of net income (loss) attributable to common limited partners per unit	$	78,122	$	(165,923)	$	51,619

__________________________________

(1) Net income attributable to common limited partners’ ownership interest is allocated to the phantom units on a pro-rata basis (weighted average phantom units outstanding as a percentage of the sum of the weighted average phantom units and common limited partner units outstanding).  For the year ended December 31, 2013, net loss attributable to common limited partners’ ownership interest is not allocated to approximately1,240,000weighted average phantom unitsbecause the contractual terms of the phantom units as participating securities do not require the holders to share in the losses of the entity.

(2) Net income attributable to common limited partners’ ownership interest is allocated to the Class D Preferred Units on a pro-rata basis (weighted average Class D Preferred Units outstanding, plus a contractual yield premium of 1.5%, as a percentage of the sum of the weighted average Class D Preferred Units and common limited partner units outstanding).  For the year ended December 31, 2013, net loss attributable to common limited partners’ ownership interest is not allocated to approximately 9,110,000weighted average Class D Preferred Units because the contractual terms of the Class D Preferred Units as participating securities do not require the holders to share in the losses of the entity.

Diluted net income (loss) attributable to common limited partners per unit is calculated by dividing net income (loss) attributable to common limited partners, plus income allocable to participating securities, by the sum of the weighted average number of common limited partner units outstanding plus the dilutive effect of outstanding participating securities and the effects of outstanding convertible securities.  The phantom units and Class D Preferred Units are participating securities included in the calculation of diluted net income (loss) attributable to common units, due to their participation rights and due to their dilution if converted.  The Class E Preferred Units are not participating securities and are not convertible and thus are not included in the units outstanding for calculation of diluted net income (loss) attributable to common limited partners per unit.

The following table sets forth the reconciliation of the Partnership’s weighted average number of common limited partner units used to compute basic net income (loss) attributable to common limited partners per unit with those used to compute diluted net income (loss) attributable to common limited partners per unit (in thousands):

	Years Ended December 31,
	2014	2013	2012
Weighted average number of common limited  partner units – basic	82,257	74,364	54,326
Add effect of dilutive securities – phantom  units(1)	1,713	-	812
Add effect of convertible preferred limited partner units(2)	14,414	-	-
Weighted average common limited partner units – diluted	98,384	74,364	55,138

__________________________________

(1) For the year ended December 31, 2013, approximately 1,240,000 weighted average phantom units were excluded from the computation of diluted net income (loss) attributable to common limited partners per unit, because the inclusion of such phantom units would have been anti-dilutive.

(2) For the year ended December 31, 2013, approximately 9,110,000 weighted average Class D Preferred Units were excluded from the computation of diluted net income (loss) attributable to common limited partners as the impact of the conversion would have been anti-dilutive.

Environmental Matters

The Partnership is subject to various federal, state and local laws and regulations relating to the protection of the environment.  The Partnership has established procedures for the ongoing evaluation of its operations, to identify potential environmental exposures and to comply with regulatory policies and procedures, including legislation related to greenhouse gas emissions.  Environmental expenditures that relate to current operations are expensed or capitalized as appropriate.  Expenditures that relate to an existing condition caused by past operations, and do not contribute to current or future revenue generation, are expensed.  Liabilities are recorded when environmental assessments and/or clean-ups are probable, and the costs can be reasonably estimated.  At this time, the Partnership is unable to assess the timing and/or effect of potential liabilities related to greenhouse gas emissions or other environmental issues.  The Partnership maintains insurance, which may cover, in whole or in part, certain environmental expenditures.  At December 31, 2014 and 2013, the Partnership had no material environmental matters requiring specific disclosure or requiring the recognition of a liability.

Segment Information

As a result of the sale of the Partnership’s subsidiaries that owned an interest in WTLPG on May 14, 2014 (see Note 5), the Partnership assessed its reportable segments and realigned its reportable segments into two new segments: Oklahoma Gathering and Processing (“Oklahoma”) and Texas Gathering and Processing (“Texas”).  These reportable segments reflect the way the Partnership will manage its operations going forward.  The Partnership has adjusted its segment presentation from the amounts previously presented to reflect the realignment of the segments.

The Oklahoma segment consists of the SouthOK and WestOK operations, which are comprised of natural gas gathering, processing and treating assets servicing drilling activity in the Anadarko, Ardmore and Arkoma Basins and which were formerly included within the previous Gathering and Processing segment.  Oklahoma revenues are primarily derived from the sale of residue gas and NGLs and the gathering, processing and treating of natural gas within the state of Oklahoma. 

The Texas segment consists of (1) the SouthTX and WestTX operations, which are comprised of natural gas gathering and processing assets servicing drilling activity in the Permian Basin and the Eagle Ford Shale play in southern Texas; and (2) the natural gas gathering assets located in the Barnett Shale play in Texas.  These assets were formerly included within the previous Gathering and Processing segment.  Texas revenues are primarily derived from the sale of residue gas and NGLs and the gathering and processing of natural gas within the state of Texas.

The previous Transportation and Treating segment, which consisted of (1) the gas treating operations, which own contract gas treating facilities located in various shale plays; and (2) the former subsidiaries’ interest in WTLPG, has been eliminated and the financial information is now included within Corporate and Other.  The natural gas gathering assets located in the Appalachian Basin in Tennessee, which were formerly included in the previous Gathering and Processing Segment, are now included within Corporate and Other.

Revenue Recognition

The Partnership’s revenue primarily consists of the sale of natural gas and NGLs along with the fees earned from its gathering, processing and treating operations.  Under certain agreements, the Partnership purchases natural gas from producers and moves it into receipt points on its pipeline systems, and then sells the natural gas, and produced NGLs and condensate, if any, off delivery points on its systems.  Under other agreements, the Partnership gathers natural gas across its systems, from receipt to delivery point, without taking title to the natural gas.  Revenue associated with the physical sale of natural gas and NGLs is recognized upon physical delivery.  Revenue related to fees for providing natural gas gathering, processing and treating services is recognized based on throughput volumes during the period, with throughput volumes generally measured at the wellhead. 

The Partnership accrues unbilled revenue and the related purchase costs due to timing differences between the delivery of natural gas, NGLs, and condensate and the receipt of a delivery statement.  This revenue is recorded based upon volumetric data from the Partnership’s records and management estimates of the related gathering and compression fees and applicable product prices.  The Partnership had unbilled revenues at December 31, 2014 and 2013 of $175.3 million and $134.9 million, respectively, which are included in accounts receivable within its consolidated balance sheets.

Cost of Sales and Accrued Producer Liabilities

The Partnership’s cost of sales primarily consists of sales proceeds required to be remitted to producers and shippers under POP contracts and natural gas purchases made in order to satisfy obligations under Keep-Whole contracts. Accrued producer liabilities on the Partnership’s consolidated balance sheets represent accrued purchase commitments payable to producers related to gas gathered and processed through its system under its POP and Keep-Whole contracts.  The following describes how cost of sales are recognized for POP contracts and Keep-Whole contracts:

POP Contracts.  These contracts provide for the Partnership to retain a negotiated percentage of the sale proceeds from residue gas and NGLs it gathers and processes, with the remainder being remitted to the producer.  In this contract-type, the Partnership and the producer are directly dependent on the volume of the commodity and its value; the Partnership effectively owns a percentage of the commodity and revenues are directly correlated to its market value.  The Partnership’s cost of sales are equal to the proceeds required to be remitted to the producers in connection with natural gas and liquids sold during the period.

Keep-Whole Contracts.  These contracts require the Partnership, as the processor and gatherer, to gather or purchase raw natural gas at current market rates per MMBTU.  The volume and energy content of gas gathered or purchased is based on the measurement at an agreed upon location (generally at the wellhead).  The BTU quantity of gas redelivered or sold at the tailgate of the Partnership’s processing facility may be lower than the BTU quantity purchased at the wellhead primarily due to the NGLs extracted from the natural gas when processed through a plant.  The Partnership must make up or “keep the producer whole” for this loss in BTU quantity.  To offset the make-up obligation, the Partnership retains the NGLs, which are extracted, and sells them for its own account.  The Partnership recognizes the purchases of natural gas during the period to keep producers whole as costs of sales under Keep-Whole contracts.  During 2014, the Partnership renegotiated most of its Keep-Whole contracts and converted them into POP contracts.  As a result, the Partnership does not expect Keep-Whole contracts to have any material impact to its cost of sales going forward.

Fee-based or POP contracts sometimes include fixed recovery terms, which mean products returned to the producer are calculated using an agreed NGL recovery factor, regardless of the volumes of NGLs actually recovered through processing.

Recently Adopted Accounting Standards

In July 2013, the FASB issued Accounting Standard Update (“ASU”) 2013-11, “Income Taxes (Topic 740) –Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists,” which, among other changes, requires an entity to present an unrecognized tax benefit as a liability and not net with deferred tax assets when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward is not available at the reporting date to settle any additional income taxes under the tax law of the applicable jurisdiction that would result from the disallowance of a tax position or when the tax law of the applicable tax jurisdiction does not require, and the entity does not intend to, use the deferred tax asset for such purpose.  These requirements are effective for interim and annual reporting periods beginning after December 15, 2013.  These amendments should be applied prospectively to all unrecognized tax benefits that exist at the effective date.  Retrospective application is permitted.  The Partnership applied these requirements upon the adoption of ASU 2013-11 on January 1, 2014.  The application had no material impact on the Partnership’s financial position or results of operations.

Recently Issued Accounting Standard Updates

On February 18, 2015, the FASB issued ASU 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis, which is intended to improve targeted areas of consolidation guidance for legal entities such as limited partnerships, limited liability corporations, and securitization structures.  The amendment simplifies the consolidation evaluation for reporting organizations that are required to evaluate whether they should consolidate certain legal entities.  The Partnership does not expect the ASU to impact how it currently consolidates its legal entities.  The amendments in this ASU will be effective for periods beginning after December 15, 2015, for public companies.  The Partnership plans to apply the amendment to annual and interim periods beginning on January 1, 2016.

In November 2014, the FASB issued ASU 2014-17, Business Combinations (Topic 805): Pushdown Accounting (a consensus of the FASB Emerging Issues Task Force).  The amendments in this ASU apply to the separate financial statements of an acquired entity and its subsidiaries upon the occurrence of an event in which an acquirer obtains control of the acquired entity.  The amendments provide an acquired entity with an option to apply pushdown accounting in its separate financial statements upon occurrence of an event in which an acquirer obtains control of the acquired entity.  An acquired entity may elect the option to apply pushdown accounting in the reporting period in which the change-in-control event occurs, or in a subsequent reporting period to the acquired entity’s most recent change-in-control event.The amendments in this ASU are effective on November 18, 2014.  After the effective date, the Partnership can make an election to apply the guidance to future change-in-control events or to its most recent change-in-control event.  The Partnership will analyze its option to apply pushdown accounting upon a change-in-control event, but does not expect the new standard to have a material impact on its financial position, results of operations and disclosures.

In August 2014, the FASB issued ASU 2014-15, Presentation of Financial Statements – Going Concern (Subtopic 205-40): Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern.  ASU 2014-15 is intended to define management’s responsibility to evaluate whether there is substantial doubt about an organization’s ability to continue as a going concern and to provide related footnote disclosures.  The amendments in ASU 2014-15 are effective for the annual period ending after December 15, 2016, and for annual periods and interim periods thereafter.  Early application is permitted.  The Partnership plans on applying the new standard for the annual period ending December 31, 2016.  The Partnership does not expect the new standard to have an impact on its disclosures.

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606).  ASU 2014-09 will supersede the revenue recognition requirements in Topic 605 “Revenue Recognition,” and most industry-specific guidance.  The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services.  The amendments in ASU 2014-09 are effective for interim and annual reporting periods beginning after December 15, 2016.  Early application is not permitted.  An entity should apply the amendments in this ASU using one of the following methods: (1) retrospectively to each prior reporting period presented, or (2) retrospectively with the cumulative effect of initially applying the standard recognized at the date of initial application.These requirements will be applied upon the application of ASU 2014-09 on January 1, 2017.  The Partnership is currently in the process of evaluating which method to use for application of ASU 2014-09 and is still determining the impacts of ASU 2014-09 on its financial position, results of operations and disclosures, however, the Partnership does not expect the new standard to have a material impact on the results of operations.

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Equity Method Investments (Tables)

12 Months Ended

Dec. 31, 2014

Equity Method Investments and Joint Ventures [Abstract]

Schedule of equity method investments in joint ventures

	December 31,		December 31,
	2014		2013
WTLPG	$	-	$	85,790
T2 LaSalle		55,911		50,534
T2 Eagle Ford		109,517		97,437
T2 EF Co-Gen		11,784		14,540
Equity method investment in joint ventures	$	177,212	$	248,301

Schedule of earnings from equity method investments

	Years Ended December 31,
	2014		2013		2012
WTLPG	$	2,611	$	4,988	$	6,323
T2 LaSalle		(4,271)		(3,127)		-
T2 Eagle Ford		(8,754)		(4,408)		-
T2 EF Co-Gen		(3,593)		(2,189)		-
Equity income (loss) in joint ventures	$	(14,007)	$	(4,736)	$	6,323

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Debt (Schedule of Debt Maturities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Debt
2015	$ 224
2016	5
2017	0
2018	0
2019	385,000
Thereafter	1,550,000
Total principal maturities	1,935,229
Unamortized premium	3,881
Total debt	$ 1,939,110

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Accrued liabilities (Tables)

12 Months Ended

Dec. 31, 2014

Accrued Liabilities

Schedule Of Accrued Liabilities

	December 31,		December 31,
	2014		2013
Accrued capital expenditures	$	13,233	$	17,898
Acquisition-related liabilities		4,779		8,933
Accrued ad valorem and production taxes		4,298		3,551
Distributions payable		2,609		-
Merger-related liabilities		6,056		-
Unconditional purchase obligations		6,521		-
Other		12,233		17,067
	$	49,729	$	47,449

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Acquisitions (Financing) (Details) (USD $)	12 Months Ended			0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	May 10, 2013	Dec. 20, 2012	Sep. 28, 2012	May 07, 2013
General Partner capital contributions	$ 2,523,000	$ 19,359,000	$ 6,865,000
Net proceeds from issuance of long term debt	0	1,028,092,000	495,374,000
4.750% Senior notes - due 2021 [Member]
Gross proceeds from issuance of long term debt				400,000,000
Net proceeds from issuance of long term debt				391,200,000
4.750% Senior notes - due 2021 [Member] | TEAK Midstream LLC [Member]
Gross proceeds from issuance of long term debt		400,000,000
Net proceeds from issuance of long term debt		391,200,000
6.625% Senior notes - due 2020 [Member]
Gross proceeds from issuance of long term debt					175,000,000	325,000,000
Net proceeds from issuance of long term debt			176,500,000		176,100,000	318,900,000
6.625% Senior notes - due 2020 [Member] | Cardinal Midstream, LLC [Member]
Gross proceeds from issuance of long term debt			175,000,000
Net proceeds from issuance of long term debt			176,100,000
Senior notes premium precent			3.00%
Common Limited Partners [Member] | Cardinal Midstream, LLC [Member]
Issuance of units in public offering, units			10,507,033
Net proceeds from issuance of common limited partner units			319,300,000
Price per common unit sold in public offering			$ 31.00
Common Limited Partners [Member] | TEAK Midstream LLC [Member]
Issuance of units in public offering, units		11,845,000
Net proceeds from issuance of common limited partner units		388,400,000
General Partner [Member]
General Partner, ownership interest	2.00%
General Partner [Member] | Cardinal Midstream, LLC [Member]
General Partner capital contributions			6,700,000
General Partner [Member] | TEAK Midstream LLC [Member]
General Partner capital contributions		8,300,000
Class D convertible preferred limited partners' interests [Member]
Price per common unit sold in public offering							$ 29.75
Preferred Unit Agreement Contributed Capital							400,000,000
Net proceeds from issuance of preferred limited partner units							397,700,000
Class D convertible preferred limited partners' interests [Member] | TEAK Midstream LLC [Member]
Preferred Unit Agreement Contributed Capital		400,000,000
Net proceeds from issuance of preferred limited partner units		397,700,000
Class D convertible preferred limited partners' interests [Member] | General Partner [Member] | TEAK Midstream LLC [Member]
General Partner capital contributions		$ 8,200,000

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Derivative Instruments (Schedule Of Derivative Instruments) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014 MMBTU	Dec. 31, 2013
Derivative, fair value asset (liability)	$ 125,405	$ (9,100)
Commodity Swaps [Member]
Derivative, fair value asset (liability)	115,278
Commodity Swaps [Member] | Natural Gas | Production Period 2015
Natural Gas MMBTUs	27,010,000
Swap average fixed price	4.18
Derivative, fair value asset (liability)	30,945
Commodity Swaps [Member] | Natural Gas | Production Period 2016
Natural Gas MMBTUs	13,800,000
Swap average fixed price	4.15
Derivative, fair value asset (liability)	9,381
Commodity Swaps [Member] | Natural Gas | Production Period 2017
Natural Gas MMBTUs	6,600,000
Swap average fixed price	4.11
Derivative, fair value asset (liability)	2,137
Commodity Swaps [Member] | Natural Gas Liquids | Production Period 2015
Volumes	71,442,000
Swap average fixed price	1.22
Derivative, fair value asset (liability)	43,094
Commodity Swaps [Member] | Natural Gas Liquids | Production Period 2016
Volumes	34,650,000
Swap average fixed price	1.03
Derivative, fair value asset (liability)	16,822
Commodity Swaps [Member] | Natural Gas Liquids | Production Period 2017
Volumes	10,080,000
Swap average fixed price	1.04
Derivative, fair value asset (liability)	4,777
Commodity Swaps [Member] | Crude Oil | Production Period 2015
Volumes	210,000
Swap average fixed price	90.26
Derivative, fair value asset (liability)	7,274
Commodity Swaps [Member] | Crude Oil | Production Period 2016
Volumes	30,000
Swap average fixed price	90.00
Derivative, fair value asset (liability)	848
Commodity Options [Member]
Derivative, fair value asset (liability)	10,127
Purchased Put Options [Member] | Natural Gas Liquids | Production Period 2015
Volumes	3,150,000
Option average strike price	0.94
Derivative, fair value asset (liability)	1,353
Purchased Put Options [Member] | Crude Oil | Production Period 2015
Volumes	270,000
Option average strike price	89.18
Derivative, fair value asset (liability)	8,774
Sold Call Options [Member] | Natural Gas Liquids | Production Period 2015
Volumes	1,260,000
Option average strike price	1.28
Derivative, fair value asset (liability)	$ 0

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Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
ASSETS
Cash and cash equivalents	$ 8,103	$ 4,914
Accounts receivable	240,576	219,297
Current portion of derivative assets	88,007	174
Prepaid expenses and other	17,368	17,393
Total current assets	354,054	241,778
Property, plant and equipment, net	3,249,973	2,724,192
Goodwill	365,763	368,572
Intangible assets, net	596,261	696,271
Equity method investment in joint ventures	177,212	248,301
Long-term portion of derivative assets	37,398	2,270
Other assets, net	44,072	46,461
Total assets	4,824,733	4,327,845
LIABILITIES AND EQUITY
Current portion of long-term debt	224	524
Accounts payable - affiliates	4,438	2,912
Accounts payable	87,076	79,051
Accrued liabilities	49,729	47,449
Accrued interest payable	26,924	26,737
Current portion of derivative liabilities	0	11,244
Accrued producer liabilities	161,208	152,309
Total current liabilities	329,599	320,226
Long-term portion of derivative liabilities	0	320
Long-term debt, less current portion	1,938,886	1,706,786
Deferred income taxes, net	30,914	33,290
Other long-term liabilities	6,867	7,318
Commitments and contingencies
Equity:
Class D convertible preferred limited partners' interests	538,814	450,749
Class E preferred limited partners' interests	121,852	0
Common limited partners' interests	1,731,764	1,703,778
General Partner's interest	47,775	46,118
Total partners' capital	2,440,205	2,200,645
Non-controlling interest	78,262	59,260
Total equity	2,518,467	2,259,905
Total liabilities and equity	$ 4,824,733	$ 4,327,845

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Supplemental Condensed Consolidating Financial Information (Tables)

12 Months Ended

Dec. 31, 2014

Disclosure Text Block Supplement [Abstract]

Schedule Of Condensed Consolidating Balance Sheets

Balance Sheets			Guarantor		Non-Guarantor		Consolidating
December 31, 2014	Parent		Subsidiaries		Subsidiaries		Adjustments		Consolidated
Assets
Cash and cash equivalents	$	-	$	174	$	7,929	$	-	$	8,103
Accounts receivable − affiliates		-		206,617		-		(206,617)		-
Other current assets		121		150,649		196,267		(1,086)		345,951
Total current assets		121		357,440		204,196		(207,703)		354,054
Property, plant and equipment, net		-		915,956		2,334,017		-		3,249,973
Intangible assets, net		-		525,730		70,531		-		596,261
Goodwill		-		320,869		44,894		-		365,763
Equity method investment in joint ventures		-		-		177,212		-		177,212
Long term portion of derivative assets		-		37,398		-		-		37,398
Long term notes receivable		-		-		1,852,928		(1,852,928)		-
Equity investments		4,277,668		903,831		-		(5,181,499)		-
Other assets, net		37,335		6,287		450		-		44,072
Total assets	$	4,315,124	$	3,067,511	$	4,684,228	$	(7,242,130)	$	4,824,733
Liabilities and Equity
Accounts payable – affiliates	$	(169,727)	$	-	$	380,782	$	(206,617)	$	4,438
Other current liabilities		27,325		68,562		229,274		-		325,161
Total current liabilities		(142,402)		68,562		610,056		(206,617)		329,599
Long-term debt, less current portion		1,938,881		5		-		-		1,938,886
Deferred income taxes, net		-		30,914		-		-		30,914
Other long-term liabilities		178		689		6,000		-		6,867
Equity		2,518,467		2,967,341		4,068,172		(7,035,513)		2,518,467
Total liabilities and equity	$	4,315,124	$	3,067,511	$	4,684,228	$	(7,242,130)	$	4,824,733

December 31, 2013			Guarantor		Non-Guarantor		Consolidating
Assets	Parent		Subsidiaries		Subsidiaries		Adjustments		Consolidated
Cash and cash equivalents	$	-	$	168	$	4,746	$	-	$	4,914
Accounts receivable − affiliates		765,236		-		-		(765,236)		-
Other current assets		215		52,910		185,975		(2,236)		236,864
Total current assets		765,451		53,078		190,721		(767,472)		241,778
Property, plant and equipment, net		-		723,302		2,000,890		-		2,724,192
Intangible assets, net		-		603,533		92,738		-		696,271
Goodwill		-		323,678		44,894		-		368,572
Equity method investment in joint ventures		-		-		248,301		-		248,301
Long term portion of derivative assets		-		2,270		-		-		2,270
Long term notes receivable		-		-		1,852,928		(1,852,928)		-
Equity investments		3,186,938		1,487,358		-		(4,674,296)		-
Other assets, net		41,094		1,787		3,580		-		46,461
Total assets	$	3,993,483	$	3,195,006	$	4,434,052	$	(7,294,696)	$	4,327,845
Liabilities and Equity
Accounts payable – affiliates	$	-	$	423,078	$	345,070	$	(765,236)	$	2,912
Other current liabilities		26,819		75,031		215,464		-		317,314
Total current liabilities		26,819		498,109		560,534		(765,236)		320,226
Long-term portion of derivative liabilities		-		320		-		-		320
Long-term debt, less current portion		1,706,556		230		-		-		1,706,786
Deferred income taxes, net		-		33,290		-		-		33,290
Other long-term liabilities		203		1,115		6,000		-		7,318
Equity		2,259,905		2,661,942		3,867,518		(6,529,460)		2,259,905
Total liabilities and equity	$	3,993,483	$	3,195,006	$	4,434,052	$	(7,294,696)	$	4,327,845

Schedule Of Condensed Consolidating Statements of Operations and Comprehensive Income

Statements of Operations and Comprehensive Income			Guarantor		Non-Guarantor		Consolidating
	Parent		Subsidiaries		Subsidiaries		Adjustments		Consolidated
Year Ended December 31, 2014
Total revenues	$	-	$	707,037	$	2,276,607	$	(8,524)	$	2,975,120
Total costs and expenses		(93,716)		(638,352)		(2,057,682)		8,524		(2,781,226)
Equity income (loss)		310,196		191,306		(14,007)		(501,502)		(14,007)
Gain on asset disposition		-		47,829		(448)		-		47,381
Income (loss), before tax		216,480		307,820		204,470		(501,502)		227,268
Income tax benefit		-		(2,376)		-		-		(2,376)
Net income (loss)		216,480		310,196		204,470		(501,502)		229,644
Income attributable to non-controlling interest		-		-		(13,164)		-		(13,164)
Preferred unit imputed dividend effect		(45,513)		-		-		-		(45,513)
Preferred unit dividends in kind		(42,552)		-		-		-		(42,552)
Preferred unit dividends		(8,233)		-		-		-		(8,233)
Net income (loss) attributable to common limited partners and the General Partner	$	120,182	$	310,196	$	191,306	$	(501,502)	$	120,182

Year Ended December 31, 2013
Total revenues	$	-	$	504,392	$	1,684,625	$	(82,168)	$	2,106,849
Total costs and expenses		(86,965)		(610,208)		(1,507,806)		80,955		(2,124,024)
Equity income (loss)		14,954		160,371		(4,736)		(175,325)		(4,736)
Loss on asset disposition		-		(1,519)		-		-		(1,519)
Goodwill impairment loss		-		(43,866)		-		-		(43,866)
Loss on early extinguishment of debt		(26,601)		-		-		-		(26,601)
Income (loss), before tax		(98,612)		9,170		172,083		(176,538)		(93,897)
Income tax benefit		-		(2,260)		-		-		(2,260)
Net income (loss)		(98,612)		11,430		172,083		(176,538)		(91,637)
Income attributable to non-controlling interest		-		-		(6,975)		-		(6,975)
Preferred unit imputed dividend effect		(29,485)		-		-		-		(29,485)
Preferred unit dividends in kind		(23,583)		-		-		-		(23,583)
Net income (loss) attributable to common limited partners and the General Partner	$	(151,680)	$	11,430	$	165,108	$	(176,538)	$	(151,680)

Statements of Operations and Comprehensive Income			Guarantor		Non-Guarantor		Consolidating
	Parent		Subsidiaries		Subsidiaries		Adjustments		Consolidated
Year Ended December 31, 2012
Total revenues	$	-	$	240,679	$	1,005,341	$	-	$	1,246,020
Total costs and expenses		(39,462)		(272,284)		(872,362)		-		(1,184,108)
Equity income (loss)		101,511		139,339		-		(234,527)		6,323
Income (loss), before tax		62,049		107,734		132,979		(234,527)		68,235
Income tax expense		-		176		-		-		176
Net income (loss)		62,049		107,558		132,979		(234,527)		68,059
Income attributable to non-controlling interest		-		-		(6,010)		-		(6,010)
Net income (loss) attributable to common limited partners and the General Partner	$	62,049	$	107,558	$	126,969	$	(234,527)	$	62,049
Other comprehensive income:
Adjustment for realized losses on derivatives reclassified to net income (loss)		4,390		4,390		-		(4,390)		4,390
Comprehensive income (loss) attributable to common limited partners and the General Partner	$	66,439	$	111,948	$	126,969	$	(238,917)	$	66,439

Schedule Of Condensed Consolidating Statements of Cash Flows

Statements of Cash Flows			Guarantor		Non-Guarantor		Consolidating
	Parent		Subsidiaries		Subsidiaries		Adjustments		Consolidated
Year Ended December 31, 2014
Net cash provided by (used in):
Operating activities	$	111,086	$	269,713	$	277,409	$	(365,679)	$	292,529
Investing activities		(346,610)		(247,910)		(306,057)		376,238		(524,339)
Financing  activities		235,524		(21,797)		31,831		(10,559)		234,999
Net change in cash and cash equivalents		-		6		3,183		-		3,189
Cash and cash equivalents, beginning of period		-		168		4,746		-		4,914
Cash and cash equivalents, end of period	$	-	$	174	$	7,929	$	-	$	8,103

Year Ended December 31, 2013
Net cash provided by (used in):
Operating activities	$	(493,139)	$	136,862	$	281,141	$	285,980	$	210,844
Investing activities		(757,365)		(806,159)		(577,527)		697,968		(1,443,083)
Financing  activities		1,250,504		669,308		297,891		(983,948)		1,233,755
Net change in cash and cash equivalents		-		11		1,505		-		1,516
Cash and cash equivalents, beginning of period		-		157		3,241		-		3,398
Cash and cash equivalents, end of period	$	-	$	168	$	4,746	$	-	$	4,914

			Guarantor		Non-Guarantor		Consolidating
	Parent		Subsidiaries		Subsidiaries		Adjustments		Consolidated
Year Ended December 31, 2012
Net cash provided by (used in):
Operating activities	$	(432,255)	$	133,153	$	186,494	$	287,246	$	174,638
Total investing activities		(405,501)		(431,835)		(419,427)		250,122		(1,006,641)
Financing  activities		837,756		298,671		236,174		(537,368)		835,233
Net change in cash and cash equivalents		-		(11)		3,241		-		3,230
Cash and cash equivalents, beginning of period		-		168		-		-		168
Cash and cash equivalents, end of period	$	-	$	157	$	3,241	$	-	$	3,398

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Supplemental Condensed Consolidated Financial Information (Schedule Of Condensed Consolidating Statements Of Cash Flows) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net cash provided by (used in):
Operating activities	$ 292,529	$ 210,844	$ 174,638
Investing activities	(524,339)	(1,443,083)	(1,006,641)
Financing activities	234,999	1,233,755	835,233
Net change in cash and cash equivalents	3,189	1,516	3,230
Cash and cash equivalents, beginning of period	4,914	3,398	168
Cash and cash equivalents, end of period	8,103	4,914	3,398
Parent Company [Member]
Net cash provided by (used in):
Operating activities	111,086	(493,139)	(432,255)
Investing activities	(346,610)	(757,365)	(405,501)
Financing activities	235,524	1,250,504	837,756
Net change in cash and cash equivalents	0	0	0
Cash and cash equivalents, beginning of period	0	0	0
Cash and cash equivalents, end of period	0	0	0
Guarantor Subsidiaries [Member]
Net cash provided by (used in):
Operating activities	269,713	136,862	133,153
Investing activities	(247,910)	(806,159)	(431,835)
Financing activities	(21,797)	669,308	298,671
Net change in cash and cash equivalents	6	11	(11)
Cash and cash equivalents, beginning of period	168	157	168
Cash and cash equivalents, end of period	174	168	157
Non-Guarantor Subsidiaries [Member]
Net cash provided by (used in):
Operating activities	277,409	281,141	186,494
Investing activities	(306,057)	(577,527)	(419,427)
Financing activities	31,831	297,891	236,174
Net change in cash and cash equivalents	3,183	1,505	3,241
Cash and cash equivalents, beginning of period	4,746	3,241	0
Cash and cash equivalents, end of period	7,929	4,746	3,241
Consolidating Adjustments [Member]
Net cash provided by (used in):
Operating activities	(365,679)	285,980	287,246
Investing activities	376,238	697,968	250,122
Financing activities	(10,559)	(983,948)	(537,368)
Net change in cash and cash equivalents	0	0	0
Cash and cash equivalents, beginning of period	0	0	0
Cash and cash equivalents, end of period	$ 0	$ 0	$ 0

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Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ 229,644	$ (91,637)	$ 68,059
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	202,543	168,617	90,029
Loss on goodwill impairment	0	43,866	0
Equity loss (income) in joint ventures	14,007	4,736	(6,323)
Distributions received from equity method joint ventures	5,264	7,400	7,200
Non-cash compensation expense	25,116	19,344	11,635
Amortization of deferred finance costs	7,082	6,965	4,672
Loss on early extinguishment of debt	0	26,601	0
Loss (gain) on asset dispositions	(47,381)	1,519	0
Income tax expense (benefit)	(2,376)	(2,260)	176
Change in operating assets and liabilities, net of business combinations
Accounts receivable, prepaid expenses and other	(22,334)	(73,307)	(31,417)
Accounts payable and accrued liabilities	13,963	61,449	37,952
Accounts payable and accounts receivable - affiliates	1,526	(2,588)	2,825
Derivative accounts payable and receivable	(134,525)	40,139	(10,170)
Net cash provided by operating activities	292,529	210,844	174,638
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(647,747)	(450,560)	(373,533)
Cash paid for business combinations, net of cash received	0	(975,887)	(633,610)
Net proceeds from asset disposition	130,966	0	0
Capital contributions to joint ventures	(8,061)	(13,366)	0
Other	503	(3,270)	502
Net cash used in investing activities	(524,339)	(1,443,083)	(1,006,641)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings under credit facility	1,271,000	1,267,000	1,170,500
Repayments under credit facility	(1,038,000)	(1,408,000)	(1,019,500)
Net proceeds from issuance of long term debt	0	1,028,092	495,374
Repayment of long-term debt	0	(365,822)	0
Payment of premium on retirement of debt	0	(25,581)	0
Payment of deferred financing costs	(3,323)	(929)	(4,542)
Payment for aquisition-based contingent consideration	0	(6,000)	0
Principal payments on capital lease	(525)	(10,750)	(2,523)
Net proceeds from issuance of common and preferred limited partner units	243,841	923,944	321,491
Purchase and retirement of treasury units	(2,210)	0	(695)
General Partner capital contributions	2,523	19,359	6,865
Contributions from non-controlling interest holders	11,720	17,021	182
Distributions to non-controlling interest holders	(5,882)	(1,432)	0
Distributions paid to common limited partners, preferred limited partners and the General Partner	(243,470)	(202,366)	(131,101)
Other	(675)	(781)	(818)
Net cash provided by financing activities	234,999	1,233,755	835,233
Net change in cash and cash equivalents	3,189	1,516	3,230
Cash and cash equivalents, beginning of period	4,914	3,398	168
Cash and cash equivalents, end of period	$ 8,103	$ 4,914	$ 3,398

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Supplemental Condensed Consolidated Financial Information (Schedule Of Condensed Consolidating Balance Sheets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
ASSETS
Cash and cash equivalents	$ 8,103	$ 4,914	$ 3,398	$ 168
Accounts receivable - affiliates	0	0
Other current assets	345,951	236,864
Total current assets	354,054	241,778
Property, plant and equipment, net	3,249,973	2,724,192
Intangible assets, net	596,261	696,271
Goodwill	365,763	368,572
Equity method investment in joint ventures	177,212	248,301
Long-term portion of derivative assets	37,398	2,270
Other assets, net	44,072	46,461
Total assets	4,824,733	4,327,845
LIABILITIES AND EQUITY
Accounts payable - affiliates	4,438	2,912
Other current liabilities	325,161	317,314
Total current liabilities	329,599	320,226
Long-term portion of derivative liabilities	0	320
Long-term debt, less current portion	1,938,886	1,706,786
Deferred income taxes, net	30,914	33,290
Other long-term liabilities	6,867	7,318
Equity	2,518,467	2,259,905	1,606,408	1,236,228
Total liabilities and equity	4,824,733	4,327,845
Consolidating Adjustments [Member]
ASSETS
Cash and cash equivalents	0	0	0	0
Accounts receivable - affiliates	(206,617)	(765,236)
Other current assets	(1,086)	(2,236)
Total current assets	(207,703)	(767,472)
Property, plant and equipment, net	0	0
Intangible assets, net	0	0
Goodwill	0	0
Equity method investment in joint ventures	0	0
Long-term portion of derivative assets	0	0
Long term notes receivable	(1,852,928)	(1,852,928)
Equity investments	(5,181,499)	(4,674,296)
Other assets, net	0	0
Total assets	(7,242,130)	(7,294,696)
LIABILITIES AND EQUITY
Accounts payable - affiliates	(206,617)	(765,236)
Other current liabilities	0	0
Total current liabilities	(206,617)	(765,236)
Long-term portion of derivative liabilities		0
Long-term debt, less current portion	0	0
Deferred income taxes, net	0	0
Other long-term liabilities	0	0
Equity	(7,035,513)	(6,529,460)
Total liabilities and equity	(7,242,130)	(7,294,696)
Parent Company [Member]
ASSETS
Cash and cash equivalents	0	0	0	0
Accounts receivable - affiliates	0	765,236
Other current assets	121	215
Total current assets	121	765,451
Property, plant and equipment, net	0	0
Intangible assets, net	0	0
Goodwill	0	0
Equity method investment in joint ventures	0	0
Long-term portion of derivative assets	0	0
Equity investments	4,277,668	3,186,938
Other assets, net	37,335	41,094
Total assets	4,315,124	3,993,483
LIABILITIES AND EQUITY
Accounts payable - affiliates	(169,727)	0
Other current liabilities	27,325	26,819
Total current liabilities	(142,402)	26,819
Long-term portion of derivative liabilities		0
Long-term debt, less current portion	1,938,881	1,706,556
Deferred income taxes, net	0	0
Other long-term liabilities	178	203
Equity	2,518,467	2,259,905
Total liabilities and equity	4,315,124	3,993,483
Guarantor Subsidiaries [Member]
ASSETS
Cash and cash equivalents	174	168	157	168
Accounts receivable - affiliates	206,617	0
Other current assets	150,649	52,910
Total current assets	357,440	53,078
Property, plant and equipment, net	915,956	723,302
Intangible assets, net	525,730	603,533
Goodwill	320,869	323,678
Equity method investment in joint ventures	0	0
Long-term portion of derivative assets	37,398	2,270
Equity investments	903,831	1,487,358
Other assets, net	6,287	1,787
Total assets	3,067,511	3,195,006
LIABILITIES AND EQUITY
Accounts payable - affiliates	0	423,078
Other current liabilities	68,562	75,031
Total current liabilities	68,562	498,109
Long-term portion of derivative liabilities		320
Long-term debt, less current portion	5	230
Deferred income taxes, net	30,914	33,290
Other long-term liabilities	689	1,115
Equity	2,967,341	2,661,942
Total liabilities and equity	3,067,511	3,195,006
Non-Guarantor Subsidiaries [Member]
ASSETS
Cash and cash equivalents	7,929	4,746	3,241	0
Accounts receivable - affiliates	0	0
Other current assets	196,267	185,975
Total current assets	204,196	190,721
Property, plant and equipment, net	2,334,017	2,000,890
Intangible assets, net	70,531	92,738
Goodwill	44,894	44,894
Equity method investment in joint ventures	177,212	248,301
Long-term portion of derivative assets	0	0
Long term notes receivable	1,852,928	1,852,928
Other assets, net	450	3,580
Total assets	4,684,228	4,434,052
LIABILITIES AND EQUITY
Accounts payable - affiliates	380,782	345,070
Other current liabilities	229,274	215,464
Total current liabilities	610,056	560,534
Long-term portion of derivative liabilities		0
Long-term debt, less current portion	0	0
Deferred income taxes, net	0	0
Other long-term liabilities	6,000	6,000
Equity	4,068,172	3,867,518
Total liabilities and equity	$ 4,684,228	$ 4,434,052

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Equity (Tables) (Details) (USD $)	12 Months Ended	3 Months Ended	0 Months Ended	3 Months Ended	0 Months Ended	3 Months Ended	0 Months Ended	3 Months Ended	0 Months Ended	3 Months Ended	0 Months Ended	3 Months Ended	0 Months Ended	3 Months Ended	0 Months Ended	3 Months Ended	0 Months Ended	3 Months Ended	0 Months Ended	3 Months Ended	0 Months Ended	3 Months Ended	0 Months Ended	3 Months Ended	0 Months Ended	3 Months Ended	0 Months Ended
	Dec. 31, 2014	Dec. 31, 2014	Feb. 14, 2012	Dec. 31, 2011	May 15, 2012	Mar. 31, 2012	Aug. 14, 2012	Jun. 30, 2012	Nov. 14, 2012	Sep. 30, 2012	Feb. 14, 2013	Dec. 31, 2012	May 15, 2013	Mar. 31, 2013	Aug. 14, 2013	Jun. 30, 2013	Nov. 14, 2013	Sep. 30, 2013	Feb. 14, 2014	Dec. 31, 2013	May 15, 2014	Mar. 31, 2014	Aug. 14, 2014	Jun. 30, 2014	Nov. 14, 2014	Sep. 30, 2014	Feb. 13, 2015
Number of days after quarter end to distribute available cash	45 days
Subsequent Event [Member] | Distribution for quarter ended December 31, 2014 [Member]
Cash distribution declared		$ 62,200,000
Common Limited Partners [Member] | Distribution for the quarter ended December 31, 2011 [Member]
Cash distribution paid per unit			$ 0.55
Cash distribution paid				29,489,000
Common Limited Partners [Member] | Distribution for the quarter ended March 31, 2012 [Member]
Cash distribution paid per unit					$ 0.56
Cash distribution paid						30,030,000
Common Limited Partners [Member] | Distribution for the quarter ended June 30, 2012 [Member]
Cash distribution paid per unit							$ 0.56
Cash distribution paid								30,085,000
Common Limited Partners [Member] | Distribution for the quarter ended September 30, 2012 [Member]
Cash distribution paid per unit									$ 0.57
Cash distribution paid										30,641,000
Common Limited Partners [Member] | Distribution for quarter ended December 31, 2012 [Member]
Cash distribution paid per unit											$ 0.58
Cash distribution paid												37,442,000
Common Limited Partners [Member] | Distribution for quarter ended March 31, 2013 [Member]
Cash distribution paid per unit													$ 0.59
Cash distribution paid														45,382,000
Common Limited Partners [Member] | Distribution for quarter ended June 30, 2013 [Member]
Cash distribution paid per unit															$ 0.62
Cash distribution paid																48,165,000
Common Limited Partners [Member] | Distribution for quarter ended September 30, 2013 [Member]
Cash distribution paid per unit																	$ 0.62
Cash distribution paid																		49,298,000
Common Limited Partners [Member] | Distribution for quarter ended December 31, 2013 [Member]
Cash distribution paid per unit																			$ 0.62
Cash distribution paid																				49,969,000
Common Limited Partners [Member] | Distribution for quarter ended March 31, 2014 [Member]
Cash distribution paid per unit																					$ 0.62
Cash distribution paid																						49,998,000
Common Limited Partners [Member] | Distribution for quarter ended June 30, 2014 [Member]
Cash distribution paid per unit																							$ 0.63
Cash distribution paid																								51,781,000
Common Limited Partners [Member] | Distribution for quarter ended September 30, 2014 [Member]
Cash distribution paid per unit																									$ 0.64
Cash distribution paid																										54,080,000
Common Limited Partners [Member] | Subsequent Event [Member] | Distribution for quarter ended December 31, 2014 [Member]
Date of distribution		Feb. 13, 2015
Cash distribution declared per unit																											$ 0.64
Date of declaration		Jan. 09, 2015
Date of record		Jan. 21, 2015
General Partner [Member]
Incentive distribution percentage range	15% and 50%
Incentive distributions General Partner may allocate back to the Partnership	3,750,000
Incentive distribution target amount per quarter required for allocation to the Partnership	7,000,000
General Partner, ownership interest	2.00%
General Partner [Member] | Distribution for the quarter ended December 31, 2011 [Member]
Total cash distribution				2,031,000
General Partner [Member] | Distribution for the quarter ended March 31, 2012 [Member]
Total cash distribution						2,217,000
General Partner [Member] | Distribution for the quarter ended June 30, 2012 [Member]
Total cash distribution								2,221,000
General Partner [Member] | Distribution for the quarter ended September 30, 2012 [Member]
Total cash distribution										2,409,000
General Partner [Member] | Distribution for quarter ended December 31, 2012 [Member]
Total cash distribution												3,117,000
General Partner [Member] | Distribution for quarter ended March 31, 2013 [Member]
Total cash distribution														3,980,000
General Partner [Member] | Distribution for quarter ended June 30, 2013 [Member]
Total cash distribution																5,875,000
General Partner [Member] | Distribution for quarter ended September 30, 2013 [Member]
Total cash distribution																		6,013,000
General Partner [Member] | Distribution for quarter ended December 31, 2013 [Member]
Total cash distribution																				6,095,000
General Partner [Member] | Distribution for quarter ended March 31, 2014 [Member]
Total cash distribution																						6,099,000
General Partner [Member] | Distribution for quarter ended June 30, 2014 [Member]
Total cash distribution																								7,055,000
General Partner [Member] | Distribution for quarter ended September 30, 2014 [Member]
Total cash distribution																										8,115,000
General Partner [Member] | Subsequent Event [Member] | Distribution for quarter ended December 31, 2014 [Member]
Cash distribution declared		$ 8,100,000

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Goodwill And Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2014

Goodwill and Intangible Assets

Schedule of Goodwill

	December 31,		December 31,
	2014		2013
Carrying amount of goodwill by reporting unit:
Barnett system	$	951	$	951
SouthOK system		170,381		170,381
SouthTX system		186,050		188,859
WestOK system		8,381		8,381
	$	365,763	$	368,572

Schedule Of Intangible Assets

					Estimated
	December 31,		December 31,		Useful Lives
	2014		2013		In Years
Gross carrying amount:
Customer contracts	$	3,419	$	3,419	2–10
Customer relationships		867,653		887,653	7–15
		871,072		891,072
Accumulated amortization:
Customer contracts		(1,281)		(779)
Customer relationships		(273,530)		(194,022)
		(274,811)		(194,801)
Net carrying amount:
Customer contracts		2,138		2,640
Customer relationships		594,123		693,631
Net carrying amount	$	596,261	$	696,271

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Goodwill And Intangible Assets (Schedule Of Goodwill) (Details) (USD $)	3 Months Ended				12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	May 07, 2013
Goodwill	$ 368,572,000				$ 365,763,000	$ 368,572,000
Goodwill impairment loss	(43,866,000)	0	0	0	0	(43,866,000)	0
Barnett system [Member]
Goodwill	951,000				951,000	951,000
SouthOK system [Member]
Goodwill	170,381,000				170,381,000	170,381,000
SouthTX system [Member]
Goodwill	188,859,000				186,050,000	188,859,000
WestOK system [Member]
Goodwill	8,381,000				8,381,000	8,381,000
TEAK Midstream LLC [Member]
Goodwill								186,050,000
TEAK Midstream LLC [Member] | SouthTX system [Member]
Purchase accounting adjustments to goodwill					$ (2,800,000)

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Concentrations of Credit Risk

12 Months Ended

Dec. 31, 2014

Risks and Uncertainties [Abstract]

Concentration of Credit Risk

NOTE 16 – CONCENTRATIONS OF RISK

The Partnership sells natural gas, NGLs and condensate under contract to various purchasers in the normal course of business.  For the year ended December 31, 2014, the Partnership had three customers that individually accounted for approximately 26%,  13% and 11%, respectively, of the Partnership’s consolidated total third party revenues, excluding the impact of all financial derivative activity.  For the year ended December 31, 2013, the Partnership had three customers that individually accounted for approximately 29%,  17% and 14%, respectively, of the Partnership’s consolidated total third party revenues, excluding the impact of all financial derivative activity.  For the year ended December 31, 2012, the Partnership had two customers that individually accounted for approximately 48% and 15%, respectively, of the Partnership’s consolidated total third party revenues, excluding the impact of all financial derivative activity.  Additionally, the Partnership had two customers that individually accounted for approximately 15% and 10%, respectively, of the Partnership’s consolidated accounts receivable at December 31, 2014, and three customers that individually accounted for approximately 23%,  20% and 10%, respectively, of the Partnership’s consolidated accounts receivable at December 31, 2013.

The Partnership has certain producers that supply a majority of the natural gas to its gathering systems and processing facilities.  A reduction in the volume of natural gas that any one of these producers supply to the Partnership could adversely affect its operating results unless comparable volume could be obtained from other producers in the surrounding region.

The Partnership places its temporary cash investments in high quality short-term money market instruments and deposits with high quality financial institutions.  At December 31, 2014, the Partnership and its subsidiaries had $8.5 million in deposits at banks, of which $7.8 million was over the insurance limits of the Federal Deposit Insurance Corporation and the Securities Investor Protection Corporation.  No losses have been experienced on such investments.

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Other Assets (Tables)

12 Months Ended

Dec. 31, 2014

Other Assets

Schedule Of Other Assets

	December 31,		December 31,
	2014		2013
Deferred finance costs, net of accumulated amortization of $29,116 and $22,034 at December 31, 2014 and 2013, respectively	$	37,334	$	41,094
Security deposits		2,238		5,367
Other long-term receivable		4,500		-
	$	44,072	$	46,461

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Subsequent Events (Narrative) (Details) (Subsequent Event [Member], USD $)	0 Months Ended			3 Months Ended	0 Months Ended	3 Months Ended	0 Months Ended
	Jan. 29, 2015	Jan. 22, 2015	Jan. 27, 2015	Dec. 31, 2014	Feb. 13, 2015	Jan. 15, 2015	Feb. 02, 2015	Feb. 26, 2015
Subsequent Event [Line Items]
Tenders received	On January 15, 2015, TRP announced cash tender offers to redeem any and all of the outstanding $500.0 million aggregate principal amount of the 6.625% Senior Notes; $400.0 million aggregate principal amount of the 4.75% Senior Notes; and $650.0 million aggregate principal amount of the 5.875% Senior Notes. TRP made the cash tender offers in connection with, and conditioned upon, the consummation of the Merger (see Note 3). The Merger, however, is not conditioned on the consummation of the tender offers. On February 2, 2015, TRP announced as of January 29, 2015, it had received tenders pursuant to its previously announced cash tender offers on January 15, 2015 from holders representing: less than a majority of the total outstanding $500.0 million of the 6.625% Senior Notes;approximately 98.3% of the total outstanding $400.0 million of the 4.75% Senior Notes; andapproximately 91.0% of the total outstanding $650.0 million of the 5.875% Senior Notes.
Percentage of interest transferred								100.00%
Asset transfer to affiliate								$ 1,000,000
Class D convertible preferred limited partners' interests [Member]
Subsequent Event [Line Items]
Common limited partner units issued at conversion		15,389,575
Preferred unit conversion rate		29.75
Class E preferred limited partners' interests [Member]
Subsequent Event [Line Items]
Preferred stock redemption terms			On January 27, 2015, the Partnership delivered notice of its intention to redeem all outstanding shares of its Class E Preferred Units. The redemption of the Class E Preferred Units will occur immediately prior to the close of the Merger (See Note 3). The Partnership expects the Merger to close on February 27, 2015 and, accordingly, the redemption would also be on February 27, 2015. The Class E Preferred Units will be redeemed at a redemption price of $25.00 per unit, plus an amount equal to all accumulated and unpaid distributions on the Class E Preferred Units as of the redemption date.
Distribution for quarter ended December 31, 2014 [Member]
Subsequent Event [Line Items]
Cash distribution declared				62,200,000
Distribution for quarter ended December 31, 2014 [Member] | Common Limited Partners [Member]
Subsequent Event [Line Items]
Date of declaration				Jan. 09, 2015
Cash distribution declared per unit					$ 0.64
Date of record				Jan. 21, 2015
Date of distribution				Feb. 13, 2015
Distribution for quarter ended December 31, 2014 [Member] | General Partner [Member]
Subsequent Event [Line Items]
Cash distribution declared				8,100,000
Distribution for the period October 15, 2014 through January 14, 2015 [Member] | Class E preferred limited partners' interests [Member]
Subsequent Event [Line Items]
Date of distribution						Jan. 15, 2015
Preferred unit cash distribution, per unit						$ 0.515625
Preferred unit cash distribution amount						$ 2,600,000
6.625% Senior notes - due 2020 [Member]
Subsequent Event [Line Items]
Change of control cash tender offer							Also on February 2, 2015, TRP announced a change of control cash tender offer for any and all of the outstanding $500.0 million of the 6.625% Senior Notes. TRP made the change of control cash tender offer in connection with, and conditioned upon, the consummation of the Merger. The Merger, however, is not conditioned on the consummation of the change in control cash tender offer. The change in control cash tender offer was made independently of TRP's January 15, 2015 cash tender offers.

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Related Party Transactions

12 Months Ended

Dec. 31, 2014

Related Party Transactions

Related Party Transactions

NOTE 18 ─ RELATED PARTY TRANSACTIONS

The Partnership does not directly employ any persons to manage or operate its business.  These functions are provided by the General Partner and employees of ATLS.  The General Partner does not receive a management fee in connection with its management of the Partnership apart from its interest as general partner and its right to receive incentive distributions.  The Partnership reimburses the General Partner and its affiliates for compensation and benefits related to its employees who perform services for the Partnership based upon an estimate of the time spent by such persons on activities for the Partnership.  Other indirect costs, such as rent for offices, are allocated to the Partnership by ATLS based on the number of its employees who devote their time to activities on the Partnership’s behalf.

The partnership agreement provides that the General Partner will determine the costs and expenses allocable to the Partnership in any reasonable manner determined by the General Partner at its sole discretion.  The Partnership reimbursed the General Partner and its affiliates $5.1 million, $5.0 million and $3.8 million during years ended December 31, 2014, 2013 and 2012, respectively, for compensation and benefits related to its employees.  There were no reimbursements for direct expenses incurred by the General Partner and its affiliates for the years ended December 31, 2014, 2013 and 2012.  The General Partner believes the method utilized in allocating costs to the Partnership is reasonable.

The Partnership compresses and gathers gas for ARP on its gathering systems located in Tennessee.  ARP’s general partner is wholly-owned by ATLS, and two members of the General Partner’s managing board are members of ARP’s board of directors.  The Partnership entered into an agreement to provide these services, which extends for the life of ARP’s leases, in February 2008.  The Partnership charged ARP approximately $0.3 million,$0.3  million and $0.4 million in compression and gathering fees for the years ended December 31, 2014, 2013 and 2012, respectively.

The Partnership agreed to provide design, procurement and construction management services for ARP with respect to a pipeline located in Lycoming County, Pennsylvania (the “Lycoming Pipeline”).  The Partnership was reimbursed approximately $1.8 million by ARP for these services during the year ended December 31, 2013.

On February 27, 2015, the Partnership agreed to transfer 100% of the Partnership’s interest in its Tennessee gas gatheringassets to ARP, for $1.0 million plus working capital adjustments, concurrent with the closing of the Merger on February 27, 2015.        

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Income Taxes (Schedule Of Components Of Income Tax Benefit) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income tax benefit:
Federal									$ (2,128)	$ (2,024)	$ 158
State									(248)	(236)	18
Total income tax benefit	$ (857)	$ (623)	$ (498)	$ (398)	$ (1,406)	$ (817)	$ (28)	$ (9)	$ (2,376)	$ (2,260)	$ 176

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Basis Of Presentation

12 Months Ended

Dec. 31, 2014

Basis Of Presentation

Basis Of Presentation

NOTE 1 – BASIS OF PRESENTATION

Atlas Pipeline Partners, L.P. (the “Partnership”) is a publicly-traded (NYSE: APL) Delaware limited partnership engaged in the gathering, processing and treating of natural gas in the mid-continent and southwestern regions of the United States.  The Partnership’s operations are conducted through subsidiary entities whose equity interests are owned by Atlas Pipeline Operating Partnership, L.P. (the “Operating Partnership”), a majority-owned subsidiary of the Partnership.  At December 31, 2014, Atlas Pipeline Partners GP, LLC (the “General Partner”) owned a combined 2.0% general partner interest in the consolidated operations of the Partnership, through which it manages and effectively controls both the Partnership and the Operating Partnership.  The General Partner is a wholly-owned subsidiary of Atlas Energy, L.P. (“ATLS”), a publicly-traded limited partnership (NYSE: ATLS).  The remaining 98.0% ownership interest in the consolidated operations of the Partnership consists of limited partner interests.  At December 31, 2014, the Partnership had 84,536,064 common units outstanding, including 1,641,026 common units held by the General Partner and 4,113,227 common units held by ATLS; 15,019,450 Class D convertible preferred units (“Class D Preferred Units”) outstanding (see Note 6); and 5,060,0008.25% Class E cumulative redeemable perpetual preferred units (“Class E Preferred Units”) outstanding (see Note 6).

Certain amounts have been reclassified in prior period consolidated financial statements to conform to the current year presentation.

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Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenue:
Natural gas and liquids sales	$ 2,621,428	$ 1,959,144	$ 1,137,261
Transportation, processing and other fees - third parties	200,787	164,874	66,287
Transportation, processing and other fees - affiliates	286	303	435
Derivative gain (loss), net	131,064	(28,764)	31,940
Other income, net	21,555	11,292	10,097
Total revenues	2,975,120	2,106,849	1,246,020
Costs and expenses:
Natural gas and liquids cost of sales	2,291,914	1,690,382	927,946
Operating expenses	113,606	94,527	62,098
General and administrative	68,893	55,856	43,406
Compensation reimbursement - affiliates	5,050	5,000	3,800
Other expenses	6,073	20,005	15,069
Depreciation and amortization	202,543	168,617	90,029
Interest	93,147	89,637	41,760
Total costs and expenses	2,781,226	2,124,024	1,184,108
Equity income (loss) in joint ventures	(14,007)	(4,736)	6,323
Gain (loss) on asset dispositions	47,381	(1,519)	0
Goodwill impairment loss	0	(43,866)	0
Loss on early extinguishment of debt	0	(26,601)	0
Income (loss) before tax	227,268	(93,897)	68,235
Income tax (benefit) loss	(2,376)	(2,260)	176
Net income (loss)	229,644	(91,637)	68,059
Income attributable to non-controlling interests	(13,164)	(6,975)	(6,010)
Preferred unit imputed dividend effect	(45,513)	(29,485)	0
Preferred unit dividends in kind	(42,552)	(23,583)	0
Preferred unit dividends	(8,233)	0	0
Net income (loss) attributable to common limited partners and the General Partner	120,182	(151,680)	62,049
Allocation of net income (loss) attributable to:
Common limited partner interest	93,684	(165,923)	52,391
General Partner interest	26,498	14,243	9,658
Net income (loss) attributable to common limited partners and the General Partner	$ 120,182	$ (151,680)	$ 62,049
Net income (loss) attributable to common limited partners per unit:
Basic	$ 0.95	$ (2.23)	$ 0.95
Weighted average common limited partner units (basic)	82,257	74,364	54,326
Diluted:
Diluted	$ 0.95	$ (2.23)	$ 0.95
Weighted average common limited partner units (diluted)	98,384	74,364	55,138

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Derivative Instruments

12 Months Ended

Dec. 31, 2014

Derivative Instruments

Derivative Instruments

NOTE 11 ─ DERIVATIVE INSTRUMENTS

The Partnership uses derivative instruments in connection with its commodity price risk management activities.  The Partnership uses financial swaps and over-the-counter (“OTC”) purchased put options to hedge its forecasted natural gas, NGLs and condensate sales against the variability in expected future cash flows attributable to changes in market prices. 

Swap instruments are contractual agreements between counterparties to exchange obligations of money as the underlying natural gas, NGLs and condensate are sold.  Under its swap agreements, the Partnership receives a fixed price and remits a floating price, which is based on certain indices for the relevant contract period, on an agreed upon quantity.  The swap agreement sets a fixed price for the product being hedged and is (i) an asset if the floating price is lower than the fixed price or (ii) a liability if the floating price is higher than the fixed price. 

OTC put options are contractual agreements whereby the purchaser pays a premium for the right, if the floating price is lower than the fixed price, to receive the difference between (i) a fixed, or strike, price and (ii) a floating price, which is based on certain indices for the relevant contract period, on an agreed upon quantity.  The purchased put option instrument sets a floor price for commodity sales being hedged and is an asset. 

The Partnership uses costless collars to reduce the cost of OTC purchased put options.  A costless collar is a combination of an OTC purchased put option and an OTC sold call option, in which the premiums net to zero.  OTC sold call options are contractual agreements whereby the seller receives a premium and grants the purchaser the right, if the floating price is higher than the strike price, to receive the difference between (i) a strike price and (ii) a floating price, which is based on certain indices for the relevant contract period, for an agreed upon quantity.  The OTC sold call option sets a ceiling price for commodity sales being hedged and is a liability.  The costless collar sets a range of prices, between the floor price of the OTC purchased put option and the ceiling price of the OTC sold call option, the Partnership will receive for the commodity sales being hedged.

The Partnership does not apply hedge accounting for derivatives and thus changes in the fair value of derivatives are recognized immediately within derivative gain (loss), net in its consolidated statements of operations.  In previous years, the Partnership applied hedge accounting for derivatives and the effective portion of the gain (loss), due to the change in the fair value of the derivative instruments, was recognized in accumulated other comprehensive loss within equity on the Partnership’s consolidated balance sheets.  The effective portion of the gain (loss) was reclassified to the Partnership’s consolidated statements of operations at the time the originally hedged physical transactions affected earnings, which occurred through the year ending December 31, 2012.  The Partnership has reclassified all earnings out of accumulated other comprehensive income (loss), within equity on the Partnership’s consolidated balance sheet and there was no balance outstanding as of the years ended December 31, 2014 and 2013.

The Partnership enters into derivative contracts with various financial institutions, utilizing master contracts based upon the standards set by the International Swaps and Derivatives Association, Inc.  These contracts allow for rights of setoff at the time of settlement of the derivatives.  Due to the right of setoff, derivatives are recorded on the Partnership’s consolidated balance sheets as assets or liabilities at fair value on the basis of the net exposure to each counterparty.  Potential credit risk adjustments are also analyzed based upon the net exposure to each counterparty.  Premiums paid for purchased options, or received for sold call options, are recorded on the Partnership’s consolidated balance sheets as the initial value of the options.  Changes in the fair value of the options are recognized within derivative gain (loss), net as unrealized gain (loss) on the Partnership’s consolidated statements of operations.  Premiums are reclassified to realized gain (loss) within derivative gain (loss), net at the time the option expires or is exercised.  The Partnership reflected net derivative assets on its consolidated balance sheet of $125.4 million at December 31, 2014, and net derivative liabilities of $9.1 million at December 31, 2013.

The following tables summarize the Partnership’s gross fair values of its derivative instruments, presenting the impact of offsetting derivative assets and liabilities on the Partnership’s consolidated balance sheets for the periods indicated (in thousands):

Offsetting of Derivative Assets
	Gross Amounts of Recognized Assets		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Assets Presented in the Consolidated Balance Sheets
As of December 31, 2014:
Current portion of derivative assets	$	88,007	$	-	$	88,007
Long-term portion of derivative assets		37,398		-		37,398
Total derivative assets, net	$	125,405	$	-	$	125,405
As of December 31, 2013:
Current portion of derivative assets	$	1,310	$	(1,136)	$	174
Long-term portion of derivative assets		5,082		(2,812)		2,270
Current portion of derivative liabilities		1,612		(1,612)		-
Long-term portion of derivative liabilities		949		(949)		-
Total derivative assets, net	$	8,953	$	(6,509)	$	2,444

Offsetting of Derivative Liabilities
	Gross Amounts of Recognized Liabilities		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Liabilities Presented in the Consolidated Balance Sheets
As of December 31, 2014:
Current portion of derivative assets	$	-	$	-	$	-
Long-term portion of derivative assets		-		-		-
Total derivative liabilities, net	$	-	$	-	$	-
As of December 31, 2013:
Current portion of derivative assets	$	(1,136)	$	1,136	$	-
Long-term portion of derivative assets		(2,812)		2,812		-
Current portion of derivative liabilities		(12,856)		1,612		(11,244)
Long-term portion of derivative liabilities		(1,269)		949		(320)
Total derivative liabilities, net	$	(18,073)	$	6,509	$	(11,564)

The following table summarizes the Partnership’s commodity derivatives as of December 31, 2014, (fair value and volumes in thousands):

Production			Average Fixed Price		Fair Value(2) Asset/
Period	Commodity	Volumes(1)	($/Volume)		(Liability)
Sold fixed price swaps
2015	Natural gas	27,010		4.18	$	30,945
2016	Natural gas	13,800		4.15		9,381
2017	Natural gas	6,600		4.11		2,137
2015	NGLs	71,442		1.22		43,094
2016	NGLs	34,650		1.03		16,822
2017	NGLs	10,080		1.04		4,777
2015	Crude oil	210		90.26		7,274
2016	Crude oil	30		90.00		848
Total fixed price swaps						115,278
Purchased put options
2015	NGLs	3,150		0.94		1,353
2015	Crude oil	270		89.18		8,774
Sold call options
2015	NGLs	1,260		1.28		-
Total options						10,127
Total derivatives					$	125,405

__________________________________

(1) NGL volumes are stated in gallons.  Crude oil volumes are stated in barrels.  Natural gas volumes are stated in MMBTUs.

(2) See Note 2 for discussion on fair value methodology.

The following tables summarize the gross effect of all derivative instruments on the Partnership’s consolidated statements of operations for the periods indicated (in thousands):

	For the Years Ended December 31,
	2014			2013			2012
Derivatives previously designated as cash flow hedges
Loss reclassified from accumulated other comprehensive loss into natural gas and liquid sales	$	-	$		-	$		(4,390)

Derivatives not designated as hedges
Gain (loss) recognized in derivative gain (loss), net:
Commodity contract - realized(1)	$	(9,960)	$	(324)	$	10,993
Commodity contract - unrealized(2)		141,024		(28,440)		20,947
Derivative gain (loss), net	$	131,064	$	(28,764)	$	31,940

__________________________________

(1) Realized gain (loss) represents the gain or loss incurred when the derivative contract expires and/or is cash settled.

(2) Unrealized gain (loss) represents the mark-to-market gain (loss) recognized on open derivative contracts, which have not yet settled.

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Segment Information (Schedule Of Natural Gas And Liquids Sales, By Products) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Natural gas and liquids sales	$ 2,621,428	$ 1,959,144	$ 1,137,261
Natural Gas
Natural gas and liquids sales	1,138,110	708,817	396,867
NGLs
Natural gas and liquids sales	1,347,111	1,132,481	657,271
Condensate
Natural gas and liquids sales	142,094	118,095	85,234
Other Revenues
Natural gas and liquids sales	$ (5,887)	$ (249)	$ (2,111)

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Related Party Transactions (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Feb. 26, 2015
Indirect costs and compensation reimbursed	$ 5,050,000	$ 5,000,000	$ 3,800,000
Transportation, processing and other fees - affiliates	286,000	303,000	435,000
Atlas Resource Partners, L.P. [Member]
Direct costs reimbursed		(1,800,000)
Transportation, processing and other fees - affiliates	300,000	300,000	400,000
General Partner [Member]
Indirect costs and compensation reimbursed	5,100,000	5,000,000	3,800,000
Direct costs reimbursed	0	0	0
Subsequent Event [Member]
Percentage of interest transferred				100.00%
Asset transfer to affiliate				$ 1,000,000

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Document And Entity Information (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Feb. 25, 2015	Jun. 30, 2014
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2014
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Entity Registrant Name	ATLAS PIPELINE PARTNERS LP
Entity Central Index Key	0001092914
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$ 2,579.8
Entity Common Stock, Shares Outstanding		99,980,357

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Fair Value Of Financial Instruments

12 Months Ended

Dec. 31, 2014

Fair Value Of Financial Instruments

Fair Value Of Financial Instruments

NOTE 12 ─ FAIR VALUE OF FINANCIAL INSTRUMENTS

The Partnership uses a valuation framework based upon inputs that market participants use in pricing an asset or liability, which are classified into two categories:  observable inputs and unobservable inputs.  Observable inputs represent market data obtained from independent sources; whereas, unobservable inputs reflect the Partnership’s own market assumptions, which are used if observable inputs are not reasonably available without undue cost and effort.  These two types of inputs are further prioritized into Levels 1, 2 and 3 (see Note 2 –“Fair Value of Financial Instruments”).

Derivative Instruments

At December 31, 2014, the valuations for all the Partnership’s derivative contracts are defined as Level 2 assets and liabilities within the same class of nature and risk, with the exception of the Partnership’s NGL fixed price swaps and NGL options, which are defined as Level 3 assets and liabilities within the same class of nature and risk.

The Partnership’s Level 2 commodity derivatives include natural gas and crude oil swaps and options, which are valued based upon observable market data related to the change in price of the underlying commodity.  The value for these swaps and options are calculated by utilizing the New York Mercantile Exchange (“NYMEX”) quoted prices for futures and option contracts traded on NYMEX that coincide with the underlying commodity, expiration period, strike price (if applicable) and pricing formula utilized in the derivative instrument.

Valuations for the Partnership’s NGL options are based on forward price curves developed by financial institutions, and therefore are defined as Level 3 assets and liabilities.  The NGL options are over-the-counter instruments not actively traded in an open market, thus the Partnership utilizes the valuations provided by the financial institutions that provide the NGL options for trade.  The Partnership tests these valuations for reasonableness through the use of an internal valuation model.

Valuations for the Partnership’s NGL fixed price swaps are based on forward price curves provided by a third party, which the Partnership considers to be Level 3 inputs.  The prices are adjusted based upon the relationship between the prices for the product/locations quoted by the third party and the underlying product/locations utilized for the swap contracts, as determined by a regression model of the historical settlement prices for the different product/locations.  The regression model is recalculated on a quarterly basis.  This adjustment is considered to be an unobservable Level 3 input.  The NGL fixed price swaps are over-the-counter instruments, which are not actively traded in an open market.  However, the prices for the underlying products and locations do have a direct correlation to the prices for the products and locations provided by the third party, which are based upon trading activity for the products and locations quoted.  A change in the relationship between these prices would have a direct impact upon the unobservable adjustment utilized to calculate the fair value of the NGL fixed price swaps.

The following table represents the Partnership’s derivative assets and liabilities recorded at fair value as of December 31, 2014 and 2013 (in thousands):

	Level 1		Level 2		Level 3		Total
December 31, 2014
Assets
Commodity swaps	$	-	$	50,585	$	64,693	$	115,278
Commodity options		-		8,774		1,353		10,127
Total assets		-		59,359		66,046		125,405
Liabilities
Commodity swaps		-		-		-		-
Commodity options		-		-		-		-
Total liabilities		-		-		-		-
Total derivatives	$	-	$	59,359	$	66,046	$	125,405
December 31, 2013
Assets
Commodity swaps	$	-	$	2,994	$	1,412	$	4,406
Commodity options		-		4,337		210		4,547
Total assets		-		7,331		1,622		8,953
Liabilities
Commodity swaps		-		(4,695)		(13,378)		(18,073)
Total liabilities		-		(4,695)		(13,378)		(18,073)
Total derivatives	$	-	$	2,636	$	(11,756)	$	(9,120)

The Partnership’s Level 3 fair value amount relates to its derivative contracts on NGL fixed price swaps and NGL options.  The following table provides a summary of changes in fair value of the Partnership’s Level 3 derivative instruments for the years ended December 31, 2014 and 2013 (in thousands):

	NGL Fixed Price Swaps			NGL Put Options			NGL Call Options			Total
	Gallons	Amount		Gallons	Amount		Gallons	Amount		Amount
Balance – January 1, 2013	87,066	$	16,814	38,556	$	6,269	-	$	-	$	23,083
New contracts(1)	104,328		-	7,560		816	-		-		816
Cash settlements from unrealized (gain) loss(2)(3)	(61,236)		(11,496)	(39,816)		8,545	-		-		(2,951)
Net change in unrealized loss(2)	-		(17,284)	-		(2,367)	-		-		(19,651)
Deferred option premium recognition(3)	-		-	-		(13,053)	-		-		(13,053)
Balance – December 31, 2013	130,158	$	(11,966)	6,300	$	210	-	$	-	$	(11,756)
New contracts(1)	70,560		-	5,040		200	5,040		(200)		-
Cash settlements from unrealized (gain) loss(2)(3)	(84,546)		3,406	(8,190)		100	(3,780)		(121)		3,385
Net change in unrealized gain (loss)(2)	-		73,253	-		1,448	-		200		74,901
Deferred option premium recognition(3)	-		-	-		(605)	-		121		(484)
Balance – December 31, 2014	116,172	$	64,693	3,150	$	1,353	1,260	$	-	$	66,046

________________________

(1) Swaps are entered into with no value on the date of trade.  Options include premiums paid, which are included in the value of the derivatives on the date of trade.

(2) Included within derivative gain (loss), net on the Partnership’s consolidated statements of operations.

(3) Includes option premium cost reclassified from unrealized gain (loss) to realized gain (loss) at time of option expiration.

The following table provides a summary of the unobservable inputs used in the fair value measurement of the Partnership’s NGL fixed price swaps at December 31, 2014 and 2013 (in thousands):

	Gallons	Third Party Quotes(1)		Adjustments(2)		Total Amount
As of December 31, 2014
Propane swaps	101,556	$	50,201	$	-	$	50,201
Natural gasoline swaps	14,616		14,859		(367)		14,492
Total NGL swaps – December 31, 2014	116,172	$	65,060	$	(367)	$	64,693
As of December 31, 2013
Propane swaps	100,296	$	(10,260)	$	-	$	(10,260)
Isobutane swaps	6,300		(2,342)		955		(1,387)
Normal butane swaps	7,560		40		322		362
Natural gasoline swaps	16,002		132		(813)		(681)
Total NGL swaps – December 31, 2013	130,158	$	(12,430)	$	464	$	(11,966)

_______________________

(1) Based upon the difference between the quoted market price provided by the third party and the fixed price of the swap.

(2) Product and location basis differentials calculated through the use of a regression model, which compares the difference between the settlement prices for the products and locations quoted by the third party and the settlement prices for the actual products and locations underlying the derivatives, using a three year historical period.

The following table provides a summary of the regression coefficient utilized in the calculation of the unobservable inputs for the Level 3 fair value measurements for the NGL fixed price swaps for the periods indicated (in thousands):

	Level 3 NGL Swap Fair		Adjustment based upon Regression Coefficient
	Value Adjustments		Lower 95%	Upper 95%	Average
As of December 31, 2014:
Natural gasoline	$	(367)	0.9714	0.9748	0.9731
Total Level 3 adjustments – December 31, 2014	$	(367)
As of December 31, 2013:
Isobutane	$	955	1.1184	1.1284	1.1234
Normal butane		322	1.0341	1.0386	1.0364
Natural gasoline		(813)	0.9727	0.9751	0.9739
Total Level 3 adjustments – December 31, 2013	$	464

NGL Linefill

The Partnership had $14.6 million and $14.5 million of NGL linefill at December 31, 2014 and 2013, respectively, which was included within prepaid expenses and other on its consolidated balance sheets.  The NGL linefill represents amounts receivable for NGLs delivered to counterparties, for which the counterparty will pay at a designated later period at a price determined by the then market price.  The Partnership’s NGL linefill held by some counterparties will be settled at various periods in the future and is defined as a Level 3 asset, which is valued at fair value using the same forward price curve utilized to value the Partnership’s NGL fixed price swaps.  The product/location adjustment based upon the multiple regression analysis, which was included in the value of the linefill, was an increase of $0.1 million and a decrease of $0.4 million as of December 31, 2014 and 2013, respectively.  The Partnership’s NGL linefill held by other counterparties is adjusted on a monthly basis according to the volumes delivered to the counterparties each period and is valued on a FIFO basis.  During the year ended December 31, 2014, the contracts related to this linefill on the WestTX system were revised and the settlement and valuation was converted from a FIFO method to a fair value method.

The following table provides a summary of changes in fair value of the Partnership’s NGL linefill for the years ended December 31, 2014 and 2013 (in thousands):

	Linefill Valued at Market			Linefill Valued on FIFO			Total NGL Linefill
	Gallons	Amount		Gallons	Amount		Gallons	Amount
Balance – January 1, 2013	9,148	$	7,783	-	$	-	9,148	$	7,783
Deliveries into NGL linefill	-		-	80,758		60,565	80,758		60,565
NGL linefill sales	(3,360)		(2,795)	(71,433)		(52,155)	(74,793)		(54,950)
Net change in NGL linefill valuation(1)	-		(249)	-		-	-		(249)
Acquired NGL linefill(2)	-		-	2,213		1,368	2,213		1,368
Balance – December 31, 2013	5,788	$	4,739	11,538	$	9,778	17,326	$	14,517
Deliveries into NGL linefill	4,385		2,919	59,273		38,451	63,658		41,370
NGL linefill sales	(4,629)		(3,917)	(49,335)		(31,470)	(53,964)		(35,387)
Adjustments for linefill contract revision	11,982		9,846	(11,982)		(9,846)	-		-
Net change in NGL linefill valuation(1)	-		(5,888)	-		-	-		(5,888)
Balance – December 31, 2014	17,526	$	7,699	9,494	$	6,913	27,020	$	14,612

_______________________

(1) Included within natural gas and liquid sales on the Partnership’s consolidated statements of operations.

(2) NGL linefill acquired as part of the TEAK and Cardinal Acquisitions (see Note 4).

Contingent Consideration

In February 2012, the Partnership acquired a gas gathering system and related assets for an initial net purchase price of $19.0 million.  The Partnership agreed to pay up to an additional $12.0 million in contingent payments, payable in two equal amounts, if certain volumes are achieved on the acquired gathering system within a specified time period.  Sufficient volumes were achieved in December 2012 and the Partnership paid the first contingent payment of $6.0 million in January 2013.  As of December 31, 2014, the fair value of the remaining contingent payment resulted in a $6.0 million long term liability, which was recorded within other long term liabilities on the Partnership’s consolidated balance sheets.  The range of the undiscounted amount the Partnership could pay related to the remaining contingent payment is between $0.0 and $6.0 million. 

Other Financial Instruments

The estimated fair value of the Partnership’s other financial instruments has been determined based upon its assessment of available market information and valuation methodologies.  However, these estimates may not necessarily be indicative of the amounts the Partnership could realize upon the sale or refinancing of such financial instruments.

The Partnership’s current assets and liabilities on its consolidated balance sheets, other than the derivatives, NGL linefill and contingent consideration discussed above, are considered to be financial instruments for which the estimated fair values of these instruments approximate their carrying amounts due to their short-term nature and thus are categorized as Level 1 values.  The carrying value of outstanding borrowings under the revolving credit facility, which bear interest at a variable interest rate, approximates their estimated fair value and thus is categorized as a Level 1 value.  The estimated fair value of the Partnership’s Senior Notes (see Note 14) is based upon the market approach and calculated using the yield of the Senior Notes as provided by financial institutions and thus is categorized as a Level 3 value.  The estimated fair values of the Partnership’s total debt at December 31, 2014 and 2013, which consists principally of borrowings under the revolving credit facility and the Senior Notes, were $1,933.2 million and $1,663.6 million, respectively, compared with the carrying amounts of $1,939.1 million and $1,707.3 million, respectively.

Acquisitions

On May 7, 2013, the Partnership completed the TEAK Acquisition (see Note 4).  On December 20, 2012, the Partnership completed the Cardinal Acquisitions (see Note 4).  The fair value measurements of assets acquired and liabilities assumed are based on inputs that are not observable in the market and therefore represent Level 3 inputs.  These inputs require significant judgments and estimates at the time of the valuation.  The fair values assigned to the assets acquired and liabilities assumed in the TEAK Acquisition were finalized during the second quarter 2014.  The fair values assigned to the assets acquired and liabilities assumed in the Cardinal Acquisition were finalized during 2013.

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Fair Value Of Financial Instruments (Narrative) (Details) (USD $)	1 Months Ended
	Jan. 31, 2013	Feb. 28, 2012	Dec. 31, 2014	Dec. 31, 2013
Contingent considerations
Net purchase price of acquisition		$ 19,000,000
Acquisitions	6,000,000
Potential cash payments		12,000,000
Acquisition-based long-term contingent consideration			6,000,000
Contingent cash payment potential, low range			0
Contingent cash payment potential, high range			6,000,000
Debt
Debt instrument, fair value			1,933,200,000	1,663,600,000
Debt instrument, carrying value			$ 1,939,110,000	$ 1,707,310,000

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Benefit Plans (Schedule Of Phantom Unit Activity) (Details) (USD $)	1 Months Ended	12 Months Ended
	Feb. 28, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Outstanding, end of period		1,684,289
Purchase and retirement of treasury units, value		$ (2,210,000)		$ (695,000)
Phantom Unit Awards [Member]
Outstanding, beginning of period		1,446,553	1,053,242	394,489
Outstanding, beginning of period, fair value per unit		$ 36.32	$ 33.21	$ 21.63
Granted	227,000	738,727	744,997	907,637
Granted, fair value per unit		$ 33.03	$ 38.96	$ 34.94
Forfeited		(37,075)	(61,550)	(67,675)
Forfeited, value per unit		$ 37.09	$ 36.11	$ 29.83
Matured and issued		(463,916)	(290,136)	(181,209)
Matured, fair value per unit		$ 34.71	$ 31.88	$ 17.88
Outstanding, end of period		1,684,289	1,446,553	1,053,242
Outstanding, end of period, fair value per unit		$ 35.30	$ 36.32	$ 33.21
Non-cash compensation expense recognized		25,116,000	19,344,000	11,635,000
Intrinsic value for phantom unit awards exercised		15,400,000	10,700,000	5,500,000
Number of phantom units settled in cash		4,684	1,677	792
Cash paid for vested units		155,000	58,000	26,000
Aggregate intrinsic value for phantom unit awards outstanding		45,900,000	50,700,000
Number of phantom unit awards classified as liabilities		25,778	22,539
Vesting period (in years)	3 years	4 years
Units vesting within twelve months		614,415
Dividend equivalent rights paid		4,300,000	3,100,000	2,000,000
Unrecognized compensation expense		27,900,000
Unrecognized compensation expense, weighted average period for recognition (in years)		1 year 11 months
Parent [Member] | Common Limited Partners [Member]
Purchase and retirement of treasury units, units		(66,321)	0	(24,052)
Purchase and retirement of treasury units, value		$ (2,210,000)	$ 0	$ (695,000)

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Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Consolidated Statements of Comprehensive Income
Net income (loss)	$ 229,644	$ (91,637)	$ 68,059
Other comprehensive income
Adjustment for realized losses on cash flow hedges reclassified to net income (loss)	0	0	4,390
Total other comprehensive income	0	0	4,390
Comprehensive income (loss)	229,644	(91,637)	72,449
Comprehensive income (loss)
Comprehensive income attributable to non-controlling interests	13,164	6,975	6,010
Preferred unit imputed dividend effect	45,513	29,485	0
Preferred unit dividends in kind	42,552	23,583	0
Preferred unit dividends	8,233	0	0
Comprehensive income (loss) attributable to common limited partners and the General Partner	120,182	(151,680)	66,439
Comprehensive income (loss)	$ 229,644	$ (91,637)	$ 72,449

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Equity

12 Months Ended

Dec. 31, 2014

Equity

Equity

NOTE 6 – EQUITY

Common Units

In November 2012, the Partnership entered into an equity distribution program with Citigroup Global Markets, Inc. (“Citigroup”).  Pursuant to this program, the Partnership offered and sold through Citigroup, as its sales agent, common units for$150.0 million.  Sales were at market prices prevailing at the time of the sale.  During the years ended December 31, 2013 and 2012, the Partnership issued 3,895,679 and 275,429 common units, respectively, under the equity distribution program for proceeds of $137.8 million and $8.7 million, respectively, net of $2.8 million and $0.2 million, respectively, in commissions incurred from Citigroup, and other expenses.  The Partnership also received capital contributions from the General Partner of $2.9 million and $0.2 million during the years ended December 31, 2013 and 2012, respectively, to maintain its 2.0% general partner interest in the Partnership.  The net proceeds from the common unit offering were utilized for general partnership purposes.

In December 2012, the Partnership sold 10,507,033 common units in a public offering at a price of $31.00 per unit, yielding net proceeds of approximately $319.3 million, including $6.7 million contributed by the General Partner to maintain its 2.0% general partner interest.  The Partnership utilized the net proceeds from the common unit offering to partially finance the Cardinal Acquisition (see Note 4).

In April 2013, the Partnership sold 11,845,000 common units in a public offering at a price of $34.00 per unit, yielding net proceeds of $388.4 million after underwriting commissions and expenses.  The Partnership also received a capital contribution from the General Partner of $8.3 million to maintain its 2.0% general partnership interest.  The Partnership used the proceeds from this offering to fund a portion of the purchase price of the TEAK Acquisition (see Note 3).

On May 12, 2014, the Partnership entered into an Equity Distribution Agreement (the “2014 EDA”) with Citigroup, Wells Fargo Securities, LLC and MLV & Co. LLC, as sales agents.  Pursuant to this program, the Partnership may offer and sell from time to time through its sales agents, common units having an aggregate value up to $250.0 million.  Sales are at market prices prevailing at the time of the sale.  However, the Partnership is currently restricted from selling common units by the Merger Agreement (see Note 3).

During the year ended December 31, 2014, the Partnership issued 3,558,005 common units, under the 2014 EDA for proceeds of $121.6 million, net of $1.2 million in commissions paid to the sales agents.  The Partnership also received capital contributions from the General Partner of $2.5 million during the year ended December 31, 2014to maintain its 2.0% general partner interest in the Partnership.  The net proceeds from the common unit offerings and General Partner contributions were utilized for general partnership purposes.

Cash Distributions

The Partnership is required to distribute, within 45 days after the end of each quarter, all its available cash (as defined in its partnership agreement) for that quarter to its common unitholders (subject to the rights of any other class or series of the Partnership’s securities with the right to share in the Partnership’s cash distributions) and to the General Partner.  If common unit distributions in any quarter exceed specified target levels, the General Partner will receive between 15% and 50% of such distributions in excess of the specified target levels, including the General Partner’s 2.0% interest.  The General Partner, which holds all the incentive distribution rights in the Partnership, has agreed to allocate up to $3.75 million of its incentive distribution rights per quarter back to the Partnership after the General Partner receives an initial $7.0 million per quarter pursuant to its incentive distribution rights.

Common unit and General Partner distributions declared by the Partnership for quarters ending from December 31, 2011 through September 30, 2014 were as follows:

				Total Cash		Total Cash
		Cash		Distribution		Distribution
		Distribution		to Common		to the
	Date Cash	Per Common		Limited		General
For Quarter	Distribution	Limited		Partners		Partner
Ended	Paid	Partner Unit		(in thousands)		(in thousands)
December 31, 2011	February 14, 2012	$	0.55	$	29,489	$	2,031
March 31, 2012	May 15, 2012		0.56		30,030		2,217
June 30, 2012	August 14, 2012		0.56		30,085		2,221
September 30, 2012	November 14, 2012		0.57		30,641		2,409
December 31, 2012	February 14, 2013		0.58		37,442		3,117
March 31, 2013	May 15, 2013		0.59		45,382		3,980
June 30, 2013	August 14, 2013		0.62		48,165		5,875
September 30, 2013	November 14, 2013		0.62		49,298		6,013
December 31, 2013	February 14, 2014		0.62		49,969		6,095
March 31, 2014	May 15, 2014		0.62		49,998		6,099
June 30, 2014	August 14, 2014		0.63		51,781		7,055
September 30, 2014	November 14, 2014		0.64		54,080		8,115

On January 9, 2015, the Partnership declared a cash distribution of $0.64 per unit on its outstanding common limited partner units, representing the cash distribution for the quarter ended December 31, 2014.  The $62.2 million distribution, including $8.1 million to the General Partner for its general partner interest and incentive distribution rights, was paid on February 13, 2015 to unitholders of record at the close of business on January 21, 2015.

Class D Preferred Units

In November 2012, the Partnership entered into a unit purchase agreement for a private placement of $200.0 million of newly-created Class D Preferred Units to third party investors.  The unit purchase agreement was intended to provide financing for a portion of the Cardinal Acquisition.  The unit purchase agreement was terminated when the Partnership raised more than $150.0 million in common unit equity.  The Partnership paid each investor a commitment fee equal to 2.0% of its commitment at the time of termination for a total expense of $4.0 million, which was recorded as other costs on the Partnership’s consolidated statements of operations.

On May 7, 2013, the Partnership completed a private placement of $400.0 million of its Class D Preferred Units to third party investors, at a negotiated price per unit of $29.75, resulting in net proceeds of $397.7 million pursuant to the Class D preferred unit purchase agreement dated April 16, 2013 (the “Commitment Date”).  The General Partner contributed $8.2 million to maintain its 2.0% general partnership interest upon the issuance of the Class D Preferred Units.  The Partnership used the proceeds to fund a portion of the purchase price of the TEAK Acquisition (see Note 4).  The Class D Preferred Units were offered and sold in a private transaction exempt from registration under Section 4(2) of the Securities Act of 1933, as amended.  The Partnership had the right to convert the Class D Preferred Units plus any unpaid distributions, in whole but not in part, beginning one year following their issuance, into common units.

The fair value of the Partnership’s common units on the Commitment Date was $36.52 per unit, resulting in an embedded beneficial conversion discount (“discount”) on the Class D Preferred Units of $91.0 million.  The Partnership recognized the fair value of the Class D Preferred Units with the offsetting intrinsic value of the discount within Class D preferred limited partner interests on its consolidated balance sheets as of December 31, 2014 and 2013.  The discount is being accreted and recognized as imputed dividends over the term of the Class D Preferred Units as a reduction to net income attributable to the common limited partners and the General Partner on the Partnership’s consolidated statements of operations.  The Partnership’s Class D Preferred Units are presented combined with a net $16.0 million and $61.5 million unaccreted discount on the Partnership’s consolidated balance sheets as of December 31, 2014 and 2013, respectively.  The Partnership recorded $45.5 million and $29.5 million in the years ended December 31, 2014 and 2013, respectively, within preferred unit imputed dividend effect on the Partnership’s consolidated statements of operations to recognize the accretion of the discount.

The Class D Preferred Units received distributions of additional Class D Preferred Units in each of the quarterly periods following their issuance in May 2013.The amount of the distribution was determined based upon the cash distribution per unit paid each quarter on the Partnership’s common limited partner units plus a preferred yield premium.  The Partnership recorded Class D Preferred Unit distributions in kind of $42.6 million and $23.6 million for the years ended December 31, 2014 and 2013, respectively, as preferred unit dividends in kind on the Partnership’s consolidated statements of operations.

Class D Preferred Unit distributions paid in kind by the Partnership for quarters ending from June 30, 2013 through September 30, 2014 were as follows:

	Date Preferred	Preferred
For Quarter	Unit Distributions	Unit Distributions
Ended	Paid in Kind	Paid in Kind(1)
June 30, 2013	August 14, 2013	138,598
September 30, 2013	November 14, 2013	239,888
December 31, 2013	February 14, 2014	274,785
March 31, 2014	May 15, 2014	305,983
June 30, 2014	August 14, 2014	294,439
September 30, 2014	November 14, 2014	320,374

__________________________________

(1) The partnership considers preferred unit distributions paid in kind to be non-cash financing activity.

On January 22, 2015, the Partnership exercised its right under the certificate of designation of the Class D Preferred Units (“Class D Certificate of Designation”) to convert all outstanding Class D Preferred Units and unpaid distributions into common limited partner units, based upon the Execution Date Unit Price of $29.75 per unit, as defined by the Class D Certificate of Designation.  As a result of the conversion, 15,389,575 common limited partner units were issued. 

Class E Preferred Units

On March 17, 2014, the Partnership issued 5,060,000 of its Class E Preferred Units to the public at an offering price of $25.00 per Class E Preferred Unit.  The Partnership received $122.3 million in net proceeds.  The proceeds were used to pay down the Partnership’s revolving credit facility.

The Partnership made cumulative cash distributions on the Class E Preferred Units from the date of original issue.  The cash distributions were payable quarterly in arrears on January 15,  April 15,  July 15, and October 15 of each year. The initial distribution on the Class E Preferred Units was paid on July 15, 2014 in an amount equal to $0.67604 per unit, or approximately $3.4 million, representing the distribution for the period March 17, 2014 through July 14, 2014.  Thereafter, the Partnership paid cumulative distributions in cash on the Class E Preferred Units on a quarterly basis at a rate of $0.515625 per unit, or 8.25% per year.

Class E Preferred Unit distributions paid by the Partnership for the period from March 14, 2014 through October 14, 2014 were as follows:

				Total Cash
	Date Class E			Distribution on
	Preferred Limited	Cash Distribution		Class E Preferred
Preferred Units	Partner Unit	Per Class E Preferred		Limited Partner
Distribution Period	Distribution Paid	Limited Partner Unit		Units (in thousands)
March 17, 2014 - July 14, 2014	July 15, 2014	$	0.676040	$	3,421
July 15, 2014 - October 14, 2014	October 15, 2014		0.515625		2,609

On January 15, 2015, the Partnership paid a cash distribution of $2.6 million on its outstanding Class E Preferred Units, representing the cash distribution for the period from October 15, 2014 through January 14, 2015.  For the year ended December 31, 2014, the Partnership allocated net income of $8.2 million to the Class E Preferred Units for the dividends earned during the period, which was recorded as preferred unit dividends on its consolidated statements of operations.

On January 27, 2015, the Partnership delivered notice of its intention to redeem all outstanding shares of its Class E Preferred Units.  The redemption of the Class E Preferred Units will occur immediately prior to the close of the Merger (See Note 3).  The Partnership expects the Merger to close on February 27, 2015 and, accordingly, the redemption would also be on February 27, 2015.  The Class E Preferred Units will be redeemed at a redemption price of $25.00 per unit, plus an amount equal to all accumulated and unpaid distributions on the Class E Preferred Units as of the redemption date.  TRP has agreed to deposit the funds for such redemption with the paying agent. 

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Equity Method Investments

12 Months Ended

Dec. 31, 2014

Equity Method Investments and Joint Ventures [Abstract]

Equity Method Investments

NOTE 5 – EQUITY METHOD INVESTMENTS

West Texas LPG Pipeline Limited Partnership

On May 14, 2014, the Partnership completed the sale of two subsidiaries, which held an aggregate 20% interest in WTLPG, to a subsidiary of Martin Midstream Partners LP (NYSE: MMLP).  The Partnership received $131.0 million in proceeds, net of selling costs and final working capital adjustments, which were used to pay down the Partnership’s revolving credit facility (see Note 14).  As a result of the sale, the Partnership recorded a $47.8 million gain on asset dispositions,which is included in its consolidated statements of operations for the year ended December 31, 2014.

WTLPG owns a common-carrier pipeline system that transports NGLs from New Mexico and Texas to Mont Belvieu, Texas for fractionation.  Prior to the sale of WTLPG, the Partnership accounted for its subsidiaries’ ownership interest in WTLPG under the equity method of accounting, with recognition of income of WTLPG as equity income in joint ventures on its consolidated statements of operations.

T2 Joint Ventures

On May 7, 2013, the Partnership acquired the T2 Joint Ventures as part of the TEAK Acquisition (see Note 4).  The T2 Joint Ventures are operated by a subsidiary of Southcross Holdings, L.P. (“Southcross”), the investor owning the remaining interests.  The T2 Joint Ventures were formed to provide services for the benefit of the joint interest owners and have capacity lease agreements with the joint interest owners, which cover the costs of operations of the T2 Joint Ventures.

The Partnership evaluated whether the T2 Joint Ventures should be subject to consolidation.  The T2 Joint Ventures do meet the qualifications of a VIE, but the Partnership does not meet the qualifications as the primary beneficiary.  Even though the Partnership owns a 50% or greater interest in the T2 Joint Ventures, the Partnership does not have controlling financial interests in these entities.  Since the Partnership shares equal management rights with Southcross, and Southcross is the operator of the T2 Joint Ventures, the Partnership determined that it is not the primary beneficiary of the VIEs and should not consolidate the T2 Joint Ventures.  The Partnership accounts for its investment in the T2 Joint Ventures under the equity method, since the Partnership does not have a controlling financial interest, but does have a significant influence.  The Partnership’s maximum exposure to loss as a result of its involvement with the T2 Joint Ventures includes its equity investment, any additional capital contribution commitments and the Partnership’s share of any approved operating expenses incurred by the VIEs.

The following table presents the value of the Partnership’s equity method investments in joint ventures as of December 31, 2014 and 2013 (in thousands):

	December 31,		December 31,
	2014		2013
WTLPG	$	-	$	85,790
T2 LaSalle		55,911		50,534
T2 Eagle Ford		109,517		97,437
T2 EF Co-Gen		11,784		14,540
Equity method investment in joint ventures	$	177,212	$	248,301

The following table presents the Partnership’s equity income (loss) in joint ventures for the years ended December 31, 2014, 2013 and 2012 (in thousands):

	Years Ended December 31,
	2014		2013		2012
WTLPG	$	2,611	$	4,988	$	6,323
T2 LaSalle		(4,271)		(3,127)		-
T2 Eagle Ford		(8,754)		(4,408)		-
T2 EF Co-Gen		(3,593)		(2,189)		-
Equity income (loss) in joint ventures	$	(14,007)	$	(4,736)	$	6,323

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Benefit Plans

12 Months Ended

Dec. 31, 2014

Benefit Plans

Benefit Plans

NOTE 17 ─ BENEFIT PLANS

Share-based payments are made to employees and non-employees in the form of phantom units or unit options.  A phantom unit entitles a grantee to receive a common limited partner unit upon vesting of the phantom unit.  The compensation committee appointed by the General Partner’s managing board (the “Compensation Committee”) determines the vesting period for phantom units. 

A unit option entitles a grantee to purchase a common limited partner unit upon payment of the exercise price for the option after completion of vesting of the unit option.  The exercise price of the unit option is equal to the fair market value of the common unit on the date of grant of the option.  The Compensation Committee determines how the exercise price may be paid by the grantee as well as the vesting and exercise period for unit options.

In tandem with phantom unit grants, participants may be granted a distribution equivalent right (“DER”), which is the right to receive cash per phantom unit in an amount equal to and at the same time as the cash distributions the Partnership makes on a common unit during the period the phantom unit is outstanding. 

Phantom units and unit options granted to employees, which are not to be cash settled, are recognized within equity in the financial statements based on their fair values on the date of the grant.  Phantom units and unit options granted to non-employees that have a cash settlement option are recognized within liabilities in the financial statements based upon their current fair market value.

Long-Term Incentive Plans

The Partnership has a 2004 Long-Term Incentive Plan (“2004 LTIP”) and a 2010 Long-Term Incentive Plan (“2010 LTIP” and collectively with the 2004 LTIP, the “LTIPs”) in which officers, employees, non-employee managing board members of the General Partner, employees of the General Partner’s affiliates and consultants are eligible to participate.  The LTIPs are administered by the Compensation Committee.  Under the LTIPs, the Compensation Committee may make awards of either phantom units or unit options for an aggregate of 3,435,000 common units.  At December 31, 2014, the Partnership had 1,684,289 phantom units outstanding under the Partnership’s LTIPs, with139,218 phantom units and unit options available for grant.  The Partnership generally issues new common units for phantom units and unit options that have vested and have been exercised.

Partnership Phantom Units 

Phantom units granted to employees under the LTIPs generally have vesting periods of four years.  However, in February 2014, the Partnership granted 227,000 phantom units with a vesting period of three years.  Phantom units awarded to non-employee managing board members will vest over a four year period.  Awards to non-employee members of the board automatically vest upon a change of control, as defined in the LTIPs.  At December 31, 2014, there were 614,415 phantom units outstanding under the LTIPs that will vest within twelve months.

The Partnership is authorized to purchase common units from employees to cover employee tax obligations when phantom units have vested.  During the years ended December 31, 2014 and 2012, the Partnership purchased and retired 66,321 and 24,052 common units, respectively, for a cost of $2.2 million and $0.7 million, respectively.  The purchased and retired units were recorded as reductions of equity on the Partnership’s consolidated balance sheets.  There were no common units purchased and retired during the year ended December 31, 2013. 

All phantom units outstanding under the LTIPs at December 31, 2014 include DERs granted to the participants by the Compensation Committee.  The amounts paid with respect to LTIP DERs were $4.3 million, $3.1 million and $2.0 million during the years ended December 31, 2014, 2013 and 2012, respectively.  These amounts were recorded as reductions of equity on the Partnership’s consolidated balance sheets.

The following table sets forth the Partnership’s LTIPs phantom unit activity for the periods indicated:

	Years Ended December 31,
	2014			2013			2012
	Number of Units	Fair Value(1)		Number of Units	Fair Value(1)		Number of Units	Fair Value(1)
Outstanding, beginning of period	1,446,553	$	36.32	1,053,242	$	33.21	394,489	$	21.63
Granted	738,727		33.03	744,997		38.96	907,637		34.94
Forfeited	(37,075)		37.09	(61,550)		36.11	(67,675)		29.83
Vested and issued(2)(3)	(463,916)		34.71	(290,136)		31.88	(181,209)		17.88
Outstanding, end of period(4)(5)	1,684,289	$	35.30	1,446,553	$	36.32	1,053,242	$	33.21
Non-cash compensation expense recognized (in thousands)		$	25,116		$	19,344		$	11,635

__________________________________

(1) Fair value based upon weighted average grant date.

(2) The intrinsic values for phantom unit awards vested and issued during the years ended December 31, 2014, 2013 and 2012 were $15.4 million, $10.7 million and $5.5 million, respectively.

(3) There were 4,684,  1,677 and 792 vested phantom units, which were settled for $155 thousand, $58 thousand and $26 thousand cash during the years ended December 31, 2014, 2013 and 2012, respectively.

(4) The aggregate intrinsic value for phantom unit awards outstanding at December 31, 2014 and 2013 was $45.9 million and $50.7 million, respectively.

(5) There were 25,778 and 22,539 outstanding phantom unit awards at December 31, 2014 and 2013, respectively, which were classified as liabilities due to a cash option available on the related phantom unit awards.

At December 31, 2014, the Partnership had approximately $27.9 million of unrecognized compensation expense related to unvested phantom units outstanding under the LTIPs based upon the fair value of the awards, which is expected to be recognized over a weighted average period of 1.9 years.

Partnership Unit Options 

The Partnership had no unit options outstanding at December 31, 2014, and there were no exercises of unit options during the years ended December 31, 2014, 2013 and 2012.

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Accrued Liabilities

12 Months Ended

Dec. 31, 2014

Accrued Liabilities

Accrued liabilities

NOTE 13 – ACCRUED LIABILITIES

The following is a summary of accrued liabilities (in thousands):

	December 31,		December 31,
	2014		2013
Accrued capital expenditures	$	13,233	$	17,898
Acquisition-related liabilities		4,779		8,933
Accrued ad valorem and production taxes		4,298		3,551
Distributions payable		2,609		-
Merger-related liabilities		6,056		-
Unconditional purchase obligations		6,521		-
Other		12,233		17,067
	$	49,729	$	47,449

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Debt (Narrative) (Revolving Credit Facility) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Aug. 28, 2014	Aug. 27, 2014
Weighted average interest rate	5.50%	5.80%	6.40%
Revolving credit facility compliance statement	As of December 31, 2014, the Partnership was in compliance with all covenants under the credit facility.
Letter of Credit [Member]
Line of credit facility, maximum borrowing capacity	50.0
Letters of credit outstanding	4.2
Revolving Credit Facility [Member]
Line of credit facility, maximum borrowing capacity	800.0			800.0	600.0
Maturity date	Aug. 28, 2019
Revolving credit facility, interest rate description	changed the per annum interest rate on borrowings to (i) the higher of (a) the prime rate, (b) the federal funds rate plus 0.50% and (c) the LIBOR rate plus 1.0%, or (ii) the LIBOR rate for the applicable period, in each case plus the applicable margin.
Weighted average interest rate	2.70%
Line of credit facility, available borrowing capacity	410.8
Additional credit commitment available				$ 250	$ 200

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Other Assets

12 Months Ended

Dec. 31, 2014

Other Assets

Other Assets

NOTE 9 – OTHER ASSETS

The following is a summary of other assets (in thousands):

	December 31,		December 31,
	2014		2013
Deferred finance costs, net of accumulated amortization of $29,116 and $22,034 at December 31, 2014 and 2013, respectively	$	37,334	$	41,094
Security deposits		2,238		5,367
Other long-term receivable		4,500		-
	$	44,072	$	46,461

Deferred finance costs are recorded at cost and amortized over the term of the respective debt agreement (see Note 14).  The Partnership incurred$3.3 million, $22.8  million and $14.4 million deferred finance costs during the years ended December 31, 2014, 2013 and 2012, respectively, related to various financing activities (see Note 14). 

During the year ended December 31, 2013, the Partnership redeemed all of its outstanding $365.8 million 8.75% unsecured senior notes due June 15, 2018 (“8.75% Senior Notes”) (see Note 14) and recognized $5.3 million expense related to accelerated amortization of deferred financing costs, which is included in loss on early extinguishment of debt on the Partnership’s consolidated statement of operations.  There was no accelerated amortization of deferred financing costs during the years ended December 31, 2014 and 2012.  Amortization expense of deferred finance costs, excluding accelerated amortization expense, was $7.1 million,  $7.0  million and $4.7 million for the years ended December 31, 2014, 2013 and 2012, respectively, which is recorded within interest expense on the Partnership’s consolidated statements of operations. 

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Equity (Narrative) (Class D Preferred Units) (Details) (USD $)	3 Months Ended								12 Months Ended			0 Months Ended	1 Months Ended	0 Months Ended							1 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	May 07, 2013	Nov. 30, 2012	Jan. 22, 2015	Aug. 14, 2013	Nov. 14, 2013	Feb. 14, 2014	May 15, 2014	Aug. 14, 2014	Nov. 14, 2014	Apr. 30, 2013	Dec. 31, 2012
Preferred unit imputed dividend effect	$ (11,379,000)	$ (11,378,000)	$ (11,378,000)	$ (11,378,000)	$ (11,378,000)	$ (11,378,000)	$ (6,729,000)	$ 0	$ (45,513,000)	$ (29,485,000)	$ 0
Preferred unit dividends in kind	(11,019,000)	(11,408,000)	(10,406,000)	(9,719,000)	(9,170,000)	(9,072,000)	(5,341,000)	0	(42,552,000)	(23,583,000)	0
General Partner capital contributions									2,523,000	19,359,000	6,865,000
Class D convertible preferred limited partners' interests [Member]
Preferred unit discount	16,000,000				61,500,000				16,000,000	61,500,000
Net proceeds from issuance of preferred limited partner units												397,700,000
Preferred unit purchase agreement, value													200,000,000
Purchase agreement commitment fee, percentage													2.00%
Preferred unit purchase agreement termination limit, minimum common unit offering amount													150,000,000
Commitment fee													4,000,000
Preferred Unit Agreement Contributed Capital												400,000,000
Price per preferred unit sold in private placement												$ 29.75
Fair value per common unit as of preferred units issuance date												36.52
Beneficial conversion feature of preferred units, initial balance												91,000,000
Class D convertible preferred limited partners' interests [Member] | Subsequent Event [Member]
Common limited partner units issued at conversion														15,389,575
Preferred unit conversion rate														29.75
Distribution for quarter ended June 30, 2013 [Member] | Class D convertible preferred limited partners' interests [Member]
Distributions paid in kind units															138,598
Distribution for quarter ended September 30, 2013 [Member] | Class D convertible preferred limited partners' interests [Member]
Distributions paid in kind units																239,888
Distribution for quarter ended December 31, 2013 [Member] | Class D convertible preferred limited partners' interests [Member]
Distributions paid in kind units																	274,785
Distribution for quarter ended March 31, 2014 [Member] | Class D convertible preferred limited partners' interests [Member]
Distributions paid in kind units																		305,983
Distribution for quarter ended June 30, 2014 [Member] | Class D convertible preferred limited partners' interests [Member]
Distributions paid in kind units																			294,439
Distribution for quarter ended September 30, 2014 [Member] | Class D convertible preferred limited partners' interests [Member]
Distributions paid in kind units																				320,374
General Partner [Member]
General Partner capital contributions																					8,300,000	6,700,000
General Partner [Member] | Class D convertible preferred limited partners' interests [Member]
General Partner capital contributions												$ 8,200,000

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Property, Plant And Equipment

12 Months Ended

Dec. 31, 2014

Property, Plant And Equipment

Property, Plant And Equipment

NOTE 7 – PROPERTY, PLANT AND EQUIPMENT

The following is a summary of property, plant and equipment, including leasedproperty and equipment meeting capital lease criteria (see Note 14) (in thousands):

					Estimated
	December 31.		December 31,		Useful Lives
	2014		2013		in Years
Pipelines, processing and compression facilities	$	3,527,004	$	2,885,303	2 – 40
Rights of way		208,310		203,136	40
Buildings		10,447		10,291	40
Furniture and equipment		14,725		13,800	3 – 7
Other		15,185		15,805	3 – 10
		3,775,671		3,128,335
Less – accumulated depreciation		(525,698)		(404,143)
	$	3,249,973	$	2,724,192

The Partnership recorded depreciation expense on property, plant and equipment, including capital lease arrangements (see Note 14), of $122.5 million, $99.7 million and $66.2 million for the years ended December 31, 2014, 2013 and 2012, respectively, on its consolidated statements of operations.

The Partnership capitalizes interest on borrowed funds related to capital projects only for periods that activities are in progress to bring these projects to their intended use.  The weighted average interest rate used to capitalize interest on borrowed funds was 5.5%,  5.8%and 6.4% for the years ended December 31, 2014, 2013, and 2012, respectively.  The amount of interest capitalized was $12.7 million, $7.5 million and $8.7 million for the years ended December 31, 2014, 2013 and 2012, respectively.

The Partnership owns and leases certain gas treating assets that are used to remove impurities from natural gas before it is delivered into gathering systems and transmission pipelines to ensure it meets pipeline quality specifications.  These assets are included within pipelines, processing and compression facilities within property, plant and equipment on the Partnership’s consolidated balance sheet.  Revenues from these lease arrangements are recorded within transportation, processing and other fee revenues on the Partnership’s consolidated statement of operations. Future minimum rental income related to these lease arrangements is estimated to be as follows for each of the next five calendar years: 2015 - $3.2 million; 2016 - $1.0 million; 2017 - 2019 - none.

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Goodwill And Intangible Assets

12 Months Ended

Dec. 31, 2014

Goodwill and Intangible Assets

Goodwill and Intangible Assets

NOTE 8 – GOODWILL AND INTANGIBLE ASSETS

The Partnership evaluates goodwill for impairment annually, on December 31, for all reporting units, except SouthTX, which is evaluated on April 30.  The Partnership completed the first step of the goodwill impairment test for its SouthTX reporting unit as of April 30, 2014 and determined there was no impairment.  The Partnership completed a qualitative test for goodwill impairment on its Barnett, SouthOK and WestOK reporting units as of December 31, 2014 and determined there were no indications of impairment.  Due to recent declines in commodity prices, the Partnership also performed a qualitative test for goodwill impairment on its SouthTX reporting unit as of December 31, 2014 and determined there was no impairment.

In 2013, the Partnership determined that a portion of goodwill recorded in connection with the Cardinal Acquisition was impaired.  A qualitative assessment was performed on the Gas Treating reporting unit.  The assessment indicated the potential for goodwill recorded on Gas Treating to be impaired due to lower forecasted cash flows as compared to original forecasts.  Using a combination of discounted cash flow models and market multiples for similar businesses, the Partnership measured the amount of goodwill impairment on Gas Treating to be $43.9 million.  The Partnership recorded a goodwill impairment loss of $43.9 million on its consolidated statements of operations for the year ended December 31, 2013.

The following table reflects the carrying amounts of goodwill by reporting unit at December 31, 2014 and 2013 (in thousands):

	December 31,		December 31,
	2014		2013
Carrying amount of goodwill by reporting unit:
Barnett system	$	951	$	951
SouthOK system		170,381		170,381
SouthTX system		186,050		188,859
WestOK system		8,381		8,381
	$	365,763	$	368,572

The change in goodwill is related to a $2.8 million decrease in goodwill due to an adjustment of the fair value of assets acquired and liabilities assumed from the TEAK Acquisition (See Note 4).  The fair values assigned to the assets acquired in the TEAK Acquisition were finalized during the second quarter 2014.  The Partnership expects all goodwill recorded to be deductible for tax purposes.

The Partnership has recorded intangible assets with finite lives in connection with certain consummated acquisitions.  The following table reflects the components of intangible assets being amortized at December 31, 2014 and 2013 (in thousands):

					Estimated
	December 31,		December 31,		Useful Lives
	2014		2013		In Years
Gross carrying amount:
Customer contracts	$	3,419	$	3,419	2–10
Customer relationships		867,653		887,653	7–15
		871,072		891,072
Accumulated amortization:
Customer contracts		(1,281)		(779)
Customer relationships		(273,530)		(194,022)
		(274,811)		(194,801)
Net carrying amount:
Customer contracts		2,138		2,640
Customer relationships		594,123		693,631
Net carrying amount	$	596,261	$	696,271

The change in the gross carrying amount of finite-lived intangible assets is related to a $20.0 million adjustment of the fair value of the customer relationships acquired from the TEAK Acquisition (See Note 4).  The fair values assigned to the assets acquired in the TEAK Acquisition were finalized during second quarter 2014.

The weighted-average amortization period for customer contracts and customer relationships, as of December 31, 2014, is 10.0 years and 11.5 years, respectively.  The Partnership recorded amortization expense on intangible assets of $80.0 million, $68.9 million and $23.8 million for the years ended December 31, 2014, 2013 and 2012, respectively, on its consolidated statements of operations.  Amortization expense related to intangible assets is estimated to be as follows for each of the next five calendar years: 2015 through 2016 - $74.0 million per year; 2017 - $68.0 million; 2018 through 2019 - $59.5 million per year.

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Income Taxes

12 Months Ended

Dec. 31, 2014

Income Taxes

Income Taxes

NOTE 10 – INCOME TAXES

As part of the Cardinal Acquisition (see Note 4), the Partnership acquired APL Arkoma, Inc., a taxable subsidiary.  The components of the federal and state income tax expense (benefit) of the Partnership’s taxable subsidiary for the years ended December 31, 2014, 2013 and 2012 are summarized as follows (in thousands):

	Years Ended December 31,
	2014		2013		2012
Income tax expense (benefit):
Federal	$	(2,128)	$	(2,024)	$	158
State		(248)		(236)		18
Total income tax expense (benefit)	$	(2,376)	$	(2,260)	$	176

The components of net deferred tax liabilities as of December 31, 2014 and 2013 consist of the following (in thousands):

	December 31,		December 31,
	2014		2013
Deferred tax assets:
Net operating loss tax carryforwards and alternative minimum tax credits	$	17,269	$	14,900
Deferred tax liabilities:
Excess of asset carrying value over tax basis		(48,183)		(48,190)
Net deferred tax liabilities	$	(30,914)	$	(33,290)

As of December 31, 2014, the Partnership had net operating loss carry forwards for federal income tax purposes of approximately  $44.7 million, which expire at various dates from 2029 to 2034.  Management of the General Partner believes it more likely than not that the deferred tax asset will be fully utilized.

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Goodwill And Intangible Assets (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Finite-lived intangible assets, amortization expense	$ 80.0	$ 68.9	$ 23.8
Future amortization expense, 2015	74.0
Future amortization expense, 2016	74.0
Future amortization expense, 2017	68.0
Future amortization expense, 2018	59.5
Future amortization expense, 2019	$ 59.5
Customer Contracts [Member]
Acquired finite-lived intangible assets, weighted average useful life	10 years
Customer Relationships [Member]
Acquired finite-lived intangible assets, weighted average useful life	11 years 6 months

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Debt (Narrative) (Senior Notes) (Details) (USD $)	12 Months Ended			0 Months Ended	1 Months Ended	0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Mar. 12, 2013	Feb. 28, 2013	Dec. 20, 2012	Sep. 28, 2012	Feb. 11, 2013	May 10, 2013	Jan. 29, 2015	Feb. 02, 2015
Debt instrument, unamortized premium	$ 3,881,000
Net proceeds from issuance of long term debt	0	1,028,092,000	495,374,000
Payments of Debt Issuance Costs	3,323,000	929,000	4,542,000
Early redemption percentage of principal required	101.00%
Extinguishment of Debt Disclosures [Abstract]
Write off of Deferred Debt Issuance Cost	0	5,300,000	0
8.750% Senior notes - due 2018 [Member]
Senior notes, interest rate		8.75%
Extinguishment of Debt Disclosures [Abstract]
Early repayment of senior debt				105,600,000	291,400,000
Extinguishment of debt		365,800,000		97,300,000	268,400,000
Redemption premium		17,500,000		6,300,000	11,200,000
Solicited Consent Costs Expensed		8,000,000			8,000,000
Loss on early extinguishment of debt		26,601,000
Interest paid				2,000,000	3,700,000
Write off of unamortized debt discount		4,200,000
Write off of Deferred Debt Issuance Cost		5,300,000
6.625% Senior notes - due 2020 [Member]
Senior notes, carrying value	500,000,000
Senior notes, interest rate	6.625%
Debt instrument, unamortized premium	3,900,000
Original stated maturity date	Oct. 01, 2020
Gross proceeds from issuance of long term debt						175,000,000	325,000,000
Net proceeds from issuance of long term debt			176,500,000			176,100,000	318,900,000
Payments of Debt Issuance Costs		400,000
Earliest redemption date	Oct. 01, 2016
Extinguishment of Debt Disclosures [Abstract]
Premium on issuance of long term debt						103.00%
Yield on senior notes issued						6.00%
5.875% Senior notes - due 2023 [Member]
Senior notes, carrying value	650,000,000
Senior notes, interest rate	5.875%
Original stated maturity date	Aug. 01, 2023
Gross proceeds from issuance of long term debt								650,000,000
Net proceeds from issuance of long term debt								637,300,000
Earliest redemption date	Feb. 01, 2018
4.750% Senior notes - due 2021 [Member]
Senior notes, carrying value	400,000,000
Senior notes, interest rate	4.75%
Original stated maturity date	Nov. 15, 2021
Gross proceeds from issuance of long term debt									400,000,000
Net proceeds from issuance of long term debt									$ 391,200,000
Earliest redemption date	Mar. 15, 2016
Subsequent Event [Member]
Tenders received										On January 15, 2015, TRP announced cash tender offers to redeem any and all of the outstanding $500.0 million aggregate principal amount of the 6.625% Senior Notes; $400.0 million aggregate principal amount of the 4.75% Senior Notes; and $650.0 million aggregate principal amount of the 5.875% Senior Notes. TRP made the cash tender offers in connection with, and conditioned upon, the consummation of the Merger (see Note 3). The Merger, however, is not conditioned on the consummation of the tender offers. On February 2, 2015, TRP announced as of January 29, 2015, it had received tenders pursuant to its previously announced cash tender offers on January 15, 2015 from holders representing: less than a majority of the total outstanding $500.0 million of the 6.625% Senior Notes;approximately 98.3% of the total outstanding $400.0 million of the 4.75% Senior Notes; andapproximately 91.0% of the total outstanding $650.0 million of the 5.875% Senior Notes.
Subsequent Event [Member] | 6.625% Senior notes - due 2020 [Member]
Change of control cash tender offer											Also on February 2, 2015, TRP announced a change of control cash tender offer for any and all of the outstanding $500.0 million of the 6.625% Senior Notes. TRP made the change of control cash tender offer in connection with, and conditioned upon, the consummation of the Merger. The Merger, however, is not conditioned on the consummation of the change in control cash tender offer. The change in control cash tender offer was made independently of TRP's January 15, 2015 cash tender offers.

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Goodwill And Intangible Assets (Schedule Of Intangible Assets) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Gross carrying amount	871,072,000	$ 891,072,000
Accumulated amortization	(274,811,000)	(194,801,000)
Net carrying amount	596,261,000	696,271,000
Customer Contracts [Member]
Gross carrying amount	3,419,000	3,419,000
Accumulated amortization	(1,281,000)	(779,000)
Net carrying amount	2,138,000	2,640,000
Customer Relationships [Member]
Gross carrying amount	867,653,000	887,653,000
Accumulated amortization	(273,530,000)	(194,022,000)
Net carrying amount	594,123,000	693,631,000
Minimum [Member] | Customer Contracts [Member]
Finite-lived intangible asset, useful life	2 years
Minimum [Member] | Customer Relationships [Member]
Finite-lived intangible asset, useful life	7 years
Maximum [Member] | Customer Contracts [Member]
Finite-lived intangible asset, useful life	10 years
Maximum [Member] | Customer Relationships [Member]
Finite-lived intangible asset, useful life	15 years
TEAK Midstream LLC [Member] | Customer Relationships [Member]
Purchase accounting adjustment to finite-lived intangible assets	(20,000,000)

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Property, Plant And Equipment (Property, Plant And Equipment) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Property, plant and equipment, gross	$ 3,775,671,000	$ 3,128,335,000
Less - accumulated depreciation	(525,698,000)	(404,143,000)
Property, plant and equipment, net	3,249,973,000	2,724,192,000
Depreciation expense	122,500,000	99,700,000	66,200,000
Pipelines Processing And Compression Facilities [Member]
Property, plant and equipment, gross	3,527,004,000	2,885,303,000
Rights Of Way [Member]
Property, plant and equipment, gross	208,310,000	203,136,000
Buildings [Member]
Property, plant and equipment, gross	10,447,000	10,291,000
Furniture And Equipment [Member]
Property, plant and equipment, gross	14,725,000	13,800,000
Other Capitalized Property Plant and Equipment [Member]
Property, plant and equipment, gross	$ 15,185,000	$ 15,805,000
Minimum [Member] | Pipelines Processing And Compression Facilities [Member]
Estimated useful lives	2 years
Minimum [Member] | Rights Of Way [Member]
Estimated useful lives	40 years
Minimum [Member] | Buildings [Member]
Estimated useful lives	40 years
Minimum [Member] | Furniture And Equipment [Member]
Estimated useful lives	3 years
Minimum [Member] | Other Capitalized Property Plant and Equipment [Member]
Estimated useful lives	3 years
Maximum [Member] | Pipelines Processing And Compression Facilities [Member]
Estimated useful lives	40 years
Maximum [Member] | Rights Of Way [Member]
Estimated useful lives	40 years
Maximum [Member] | Buildings [Member]
Estimated useful lives	40 years
Maximum [Member] | Furniture And Equipment [Member]
Estimated useful lives	7 years
Maximum [Member] | Other Capitalized Property Plant and Equipment [Member]
Estimated useful lives	10 years

XML

Segment Information (Schedule Of Segment Reporting Information, By Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenue:
Revenues - third party									$ 2,974,834	$ 2,106,546	$ 1,245,585
Transportation, processing and other fees - affiliates									286	303	435
Total revenues	799,978	761,182	713,956	700,004	580,128	557,870	560,939	407,912	2,975,120	2,106,849	1,246,020
Costs and expenses:
Natural gas and liquids cost of sales									2,291,914	1,690,382	927,946
Operating expenses									113,606	94,527	62,098
General And Administrative Expense									73,943	60,856	47,206
Other expenses									6,073	20,005	15,069
Depreciation and amortization									202,543	168,617	90,029
Interest									93,147	89,637	41,760
Total costs and expenses	684,124	707,084	698,543	691,475	581,918	582,369	548,866	410,871	2,781,226	2,124,024	1,184,108
Equity income (loss) in joint ventures	(3,543)	(4,711)	(3,875)	(1,878)	(4,422)	(1,882)	(472)	2,040	(14,007)	(4,736)	6,323
Gain (loss) on asset dispositions	(448)	(636)	48,465	0	0	0	(1,519)	0	47,381	(1,519)	0
Goodwill impairment loss					(43,866)	0	0	0	0	(43,866)	0
Loss on early extinguishment of debt					0	0	(19)	(26,582)	0	(26,601)	0
Income (loss) before tax	111,863	48,751	60,003	6,651	(50,078)	(26,381)	10,063	(27,501)	227,268	(93,897)	68,235
Income tax (benefit) loss	(857)	(623)	(498)	(398)	(1,406)	(817)	(28)	(9)	(2,376)	(2,260)	176
Net income (loss)	112,720	49,374	60,501	7,049	(48,672)	(25,564)	10,091	(27,492)	229,644	(91,637)	68,059
Capital expenditures									647,747	450,560	373,533
Schedule of Assets, by Segment
Equity method investment in joint ventures	177,212				248,301				177,212	248,301
Goodwill	365,763				368,572				365,763	368,572
Total assets	4,824,733				4,327,845				4,824,733	4,327,845
Texas [Member]
Revenue:
Revenues - third party									1,115,545	743,412	459,103
Transportation, processing and other fees - affiliates									0	0	0
Total revenues									1,115,545	743,412	459,103
Costs and expenses:
Natural gas and liquids cost of sales									908,777	603,137	376,526
Operating expenses									48,700	33,716	21,712
General And Administrative Expense									0	0	0
Other expenses									0	0	(308)
Depreciation and amortization									95,203	65,797	33,284
Interest									0	0	0
Total costs and expenses									1,052,680	702,650	431,214
Equity income (loss) in joint ventures									(16,619)	(9,724)	0
Gain (loss) on asset dispositions									0	0
Income (loss) before tax									46,246	31,038	27,889
Income tax (benefit) loss									0	0	0
Net income (loss)									46,246	31,038	27,889
Capital expenditures									298,443	211,056	124,910
Schedule of Assets, by Segment
Equity method investment in joint ventures	177,212				162,511				177,212	162,511
Goodwill	187,001				189,810				187,001	189,810
Total assets	2,045,305				1,872,165				2,045,305	1,872,165
Oklahoma [Member]
Revenue:
Revenues - third party									1,722,810	1,385,342	757,909
Transportation, processing and other fees - affiliates									0	0	0
Total revenues									1,722,810	1,385,342	757,909
Costs and expenses:
Natural gas and liquids cost of sales									1,383,137	1,087,245	551,420
Operating expenses									62,758	58,848	39,627
General And Administrative Expense									0	0	0
Other expenses									0	0	5
Depreciation and amortization									102,614	98,240	56,154
Interest									0	0	0
Total costs and expenses									1,548,509	1,244,333	647,206
Equity income (loss) in joint ventures									0	0	0
Gain (loss) on asset dispositions									(448)	(1,519)
Income (loss) before tax									173,853	139,490	110,703
Income tax (benefit) loss									(2,376)	(2,260)	176
Net income (loss)									176,229	141,750	110,527
Capital expenditures									347,984	235,748	248,009
Schedule of Assets, by Segment
Goodwill	178,762				178,762				178,762	178,762
Total assets	2,553,802				2,265,231				2,553,802	2,265,231
Corporate and Other [Member]
Revenue:
Revenues - third party									136,479	(22,208)	28,573
Transportation, processing and other fees - affiliates									286	303	435
Total revenues									136,765	(21,905)	29,008
Costs and expenses:
Natural gas and liquids cost of sales									0	0	0
Operating expenses									2,148	1,963	759
General And Administrative Expense									73,943	60,856	47,206
Other expenses									6,073	20,005	15,372
Depreciation and amortization									4,726	4,580	591
Interest									93,147	89,637	41,760
Total costs and expenses									180,037	177,041	105,688
Equity income (loss) in joint ventures									2,612	4,988	6,323
Gain (loss) on asset dispositions									47,829	0
Goodwill impairment loss										(43,866)
Loss on early extinguishment of debt										(26,601)
Income (loss) before tax									7,169	(264,425)	(70,357)
Income tax (benefit) loss									0	0	0
Net income (loss)									7,169	(264,425)	(70,357)
Capital expenditures									1,320	3,756	614
Schedule of Assets, by Segment
Equity method investment in joint ventures	0				85,790				0	85,790
Total assets	$ 225,626				$ 190,449				$ 225,626	$ 190,449

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Property, Plant And Equipment (Tables)

12 Months Ended

Dec. 31, 2014

Property, Plant And Equipment

Property, Plant And Equipment

					Estimated
	December 31.		December 31,		Useful Lives
	2014		2013		in Years
Pipelines, processing and compression facilities	$	3,527,004	$	2,885,303	2 – 40
Rights of way		208,310		203,136	40
Buildings		10,447		10,291	40
Furniture and equipment		14,725		13,800	3 – 7
Other		15,185		15,805	3 – 10
		3,775,671		3,128,335
Less – accumulated depreciation		(525,698)		(404,143)
	$	3,249,973	$	2,724,192

XML

Targa Resources Partners LP Merger (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Feb. 26, 2015
Distribution of common units for each common unit at time of Merger	0.5846
One time cash payment per share at Merger	$ 1.26
Merger related expenses incurred	$ 6.1
Atlas Energy LP [Member]
Distribution of common units for each common unit at time of Merger	0.1809
One time cash payment per share at Merger	$ 9.12
Par value of TRC stock distribution	$ 0.001
Atlas Energy Group, LLC Spinoff Percentage	100.00%
Subsequent Event [Member]
Percentage of interest transferred		100.00%
Asset transfer to affiliate		$ 1.0

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Commitments And Contingencies

12 Months Ended

Dec. 31, 2014

Commitments And Contingencies

Commitments And Contingencies

NOTE 15 ─ COMMITMENTS AND CONTINGENCIES

The Partnership has noncancelable operating leases for equipment and office space that expire at various dates.  Certain operating leases provide the Partnership with the option to renew for additional periods.  Where operating leases contain escalation clauses, rent abatements, and/or concessions, the Partnership applies them in the determination of straight-line rent expense over the lease term.  Leasehold improvements are amortized over the shorter of the lease term or asset life, which may include renewal periods where the renewal is reasonably assured, and is included in the determination of straight-line rent expense.  Total rental expense for the years ended December 31, 2014, 2013 and 2012 was $15.2 million,$11.3 million and $5.5 million, respectively.  The aggregate amount of remaining future minimum annual lease payments as of December 31, 2014 is as follows (in thousands):

Years Ended December 31:
2015	$	12,621
2016		8,610
2017		5,126
2018		4,469
2019		644
Thereafter		322
	$	31,792

The Partnership has certain long-term unconditional purchase obligations and commitments, consisting primarily of transportation contracts.  These agreements provide for transportation services to be used in the ordinary course of the Partnership’s operations.  Transportation fees paid related to these contracts, including minimum shipment payments, were $28.3 million, $34.8 million and $10.5 million for the years ended December 31, 2014, 2013 and 2012, respectively.  The unrecorded future fixed and determinable portion of the obligations as of December 31, 2014 was as follows: 2015 - $20.7 million; 2016 to 2017 - $23.9 million per year; 2018 - $21.8 million; and 2019 - $16.9 million.

The Partnership had committed approximately $179.1 million for the purchase of property, plant and equipment at December 31, 2014.

The Partnership is involved in class action lawsuits arising from events related to the Merger (see Part I. – Item 3. Legal Proceedings”).  At this time, the Partnership cannot reasonably estimate the range of possible loss as a result of the lawsuits.

The Partnership is also party to various routine legal proceedings arising out of the ordinary course of its business.  Management of the Partnership believes the ultimate resolution of these actions, individually or in the aggregate, will not have a material adverse effect on its financial condition or results of operations. 

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Supplemental Condensed Consolidating Financial Information

12 Months Ended

Dec. 31, 2014

Disclosure Text Block Supplement [Abstract]

Supplemental Condensed Consolidating Financial Information

NOTE 20 − SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION

The Partnership’s Senior Notes and revolving credit facility are guaranteed by its wholly-owned subsidiaries.  The guarantees are full, unconditional, joint and several.  The Partnership’s consolidated financial statements include the financial statements of WestOK, LLC, WestTex, LLC and Centrahoma, as well as the equity interests in WTLPG held by two of the Partnership’s subsidiaries, prior to their sale on May 14, 2014 (see Note 5), and the equity interests in the T2 Joint Ventures.  Under the terms of the Senior Notes and the revolving credit facility, WestOK, LLC, WestTex, LLC, Centrahoma, WTLPG and the T2 Joint Ventures are non-guarantor subsidiaries as they are not wholly-owned by the Partnership.  The following supplemental condensed consolidating financial information reflects the Partnership’s stand-alone accounts, the combined accounts of the guarantor subsidiaries, the combined accounts of the non-guarantor subsidiaries, the consolidating adjustments and eliminations and the Partnership’s consolidated accounts as of December 31, 2014 and 2013 and for the years ended December 31, 2014, 2013 and 2012.  For the purpose of the following financial information, the Partnership’s investments in its subsidiaries and the guarantor subsidiaries’ investments in their subsidiaries are presented in accordance with the equity method of accounting (in thousands):

Balance Sheets			Guarantor		Non-Guarantor		Consolidating
December 31, 2014	Parent		Subsidiaries		Subsidiaries		Adjustments		Consolidated
Assets
Cash and cash equivalents	$	-	$	174	$	7,929	$	-	$	8,103
Accounts receivable − affiliates		-		206,617		-		(206,617)		-
Other current assets		121		150,649		196,267		(1,086)		345,951
Total current assets		121		357,440		204,196		(207,703)		354,054
Property, plant and equipment, net		-		915,956		2,334,017		-		3,249,973
Intangible assets, net		-		525,730		70,531		-		596,261
Goodwill		-		320,869		44,894		-		365,763
Equity method investment in joint ventures		-		-		177,212		-		177,212
Long term portion of derivative assets		-		37,398		-		-		37,398
Long term notes receivable		-		-		1,852,928		(1,852,928)		-
Equity investments		4,277,668		903,831		-		(5,181,499)		-
Other assets, net		37,335		6,287		450		-		44,072
Total assets	$	4,315,124	$	3,067,511	$	4,684,228	$	(7,242,130)	$	4,824,733
Liabilities and Equity
Accounts payable – affiliates	$	(169,727)	$	-	$	380,782	$	(206,617)	$	4,438
Other current liabilities		27,325		68,562		229,274		-		325,161
Total current liabilities		(142,402)		68,562		610,056		(206,617)		329,599
Long-term debt, less current portion		1,938,881		5		-		-		1,938,886
Deferred income taxes, net		-		30,914		-		-		30,914
Other long-term liabilities		178		689		6,000		-		6,867
Equity		2,518,467		2,967,341		4,068,172		(7,035,513)		2,518,467
Total liabilities and equity	$	4,315,124	$	3,067,511	$	4,684,228	$	(7,242,130)	$	4,824,733

December 31, 2013			Guarantor		Non-Guarantor		Consolidating
Assets	Parent		Subsidiaries		Subsidiaries		Adjustments		Consolidated
Cash and cash equivalents	$	-	$	168	$	4,746	$	-	$	4,914
Accounts receivable − affiliates		765,236		-		-		(765,236)		-
Other current assets		215		52,910		185,975		(2,236)		236,864
Total current assets		765,451		53,078		190,721		(767,472)		241,778
Property, plant and equipment, net		-		723,302		2,000,890		-		2,724,192
Intangible assets, net		-		603,533		92,738		-		696,271
Goodwill		-		323,678		44,894		-		368,572
Equity method investment in joint ventures		-		-		248,301		-		248,301
Long term portion of derivative assets		-		2,270		-		-		2,270
Long term notes receivable		-		-		1,852,928		(1,852,928)		-
Equity investments		3,186,938		1,487,358		-		(4,674,296)		-
Other assets, net		41,094		1,787		3,580		-		46,461
Total assets	$	3,993,483	$	3,195,006	$	4,434,052	$	(7,294,696)	$	4,327,845
Liabilities and Equity
Accounts payable – affiliates	$	-	$	423,078	$	345,070	$	(765,236)	$	2,912
Other current liabilities		26,819		75,031		215,464		-		317,314
Total current liabilities		26,819		498,109		560,534		(765,236)		320,226
Long-term portion of derivative liabilities		-		320		-		-		320
Long-term debt, less current portion		1,706,556		230		-		-		1,706,786
Deferred income taxes, net		-		33,290		-		-		33,290
Other long-term liabilities		203		1,115		6,000		-		7,318
Equity		2,259,905		2,661,942		3,867,518		(6,529,460)		2,259,905
Total liabilities and equity	$	3,993,483	$	3,195,006	$	4,434,052	$	(7,294,696)	$	4,327,845

Statements of Operations and Comprehensive Income			Guarantor		Non-Guarantor		Consolidating
	Parent		Subsidiaries		Subsidiaries		Adjustments		Consolidated
Year Ended December 31, 2014
Total revenues	$	-	$	707,037	$	2,276,607	$	(8,524)	$	2,975,120
Total costs and expenses		(93,716)		(638,352)		(2,057,682)		8,524		(2,781,226)
Equity income (loss)		310,196		191,306		(14,007)		(501,502)		(14,007)
Gain on asset disposition		-		47,829		(448)		-		47,381
Income (loss), before tax		216,480		307,820		204,470		(501,502)		227,268
Income tax benefit		-		(2,376)		-		-		(2,376)
Net income (loss)		216,480		310,196		204,470		(501,502)		229,644
Income attributable to non-controlling interest		-		-		(13,164)		-		(13,164)
Preferred unit imputed dividend effect		(45,513)		-		-		-		(45,513)
Preferred unit dividends in kind		(42,552)		-		-		-		(42,552)
Preferred unit dividends		(8,233)		-		-		-		(8,233)
Net income (loss) attributable to common limited partners and the General Partner	$	120,182	$	310,196	$	191,306	$	(501,502)	$	120,182

Year Ended December 31, 2013
Total revenues	$	-	$	504,392	$	1,684,625	$	(82,168)	$	2,106,849
Total costs and expenses		(86,965)		(610,208)		(1,507,806)		80,955		(2,124,024)
Equity income (loss)		14,954		160,371		(4,736)		(175,325)		(4,736)
Loss on asset disposition		-		(1,519)		-		-		(1,519)
Goodwill impairment loss		-		(43,866)		-		-		(43,866)
Loss on early extinguishment of debt		(26,601)		-		-		-		(26,601)
Income (loss), before tax		(98,612)		9,170		172,083		(176,538)		(93,897)
Income tax benefit		-		(2,260)		-		-		(2,260)
Net income (loss)		(98,612)		11,430		172,083		(176,538)		(91,637)
Income attributable to non-controlling interest		-		-		(6,975)		-		(6,975)
Preferred unit imputed dividend effect		(29,485)		-		-		-		(29,485)
Preferred unit dividends in kind		(23,583)		-		-		-		(23,583)
Net income (loss) attributable to common limited partners and the General Partner	$	(151,680)	$	11,430	$	165,108	$	(176,538)	$	(151,680)

Statements of Operations and Comprehensive Income			Guarantor		Non-Guarantor		Consolidating
	Parent		Subsidiaries		Subsidiaries		Adjustments		Consolidated
Year Ended December 31, 2012
Total revenues	$	-	$	240,679	$	1,005,341	$	-	$	1,246,020
Total costs and expenses		(39,462)		(272,284)		(872,362)		-		(1,184,108)
Equity income (loss)		101,511		139,339		-		(234,527)		6,323
Income (loss), before tax		62,049		107,734		132,979		(234,527)		68,235
Income tax expense		-		176		-		-		176
Net income (loss)		62,049		107,558		132,979		(234,527)		68,059
Income attributable to non-controlling interest		-		-		(6,010)		-		(6,010)
Net income (loss) attributable to common limited partners and the General Partner	$	62,049	$	107,558	$	126,969	$	(234,527)	$	62,049
Other comprehensive income:
Adjustment for realized losses on derivatives reclassified to net income (loss)		4,390		4,390		-		(4,390)		4,390
Comprehensive income (loss) attributable to common limited partners and the General Partner	$	66,439	$	111,948	$	126,969	$	(238,917)	$	66,439

Statements of Cash Flows			Guarantor		Non-Guarantor		Consolidating
	Parent		Subsidiaries		Subsidiaries		Adjustments		Consolidated
Year Ended December 31, 2014
Net cash provided by (used in):
Operating activities	$	111,086	$	269,713	$	277,409	$	(365,679)	$	292,529
Investing activities		(346,610)		(247,910)		(306,057)		376,238		(524,339)
Financing  activities		235,524		(21,797)		31,831		(10,559)		234,999
Net change in cash and cash equivalents		-		6		3,183		-		3,189
Cash and cash equivalents, beginning of period		-		168		4,746		-		4,914
Cash and cash equivalents, end of period	$	-	$	174	$	7,929	$	-	$	8,103

Year Ended December 31, 2013
Net cash provided by (used in):
Operating activities	$	(493,139)	$	136,862	$	281,141	$	285,980	$	210,844
Investing activities		(757,365)		(806,159)		(577,527)		697,968		(1,443,083)
Financing  activities		1,250,504		669,308		297,891		(983,948)		1,233,755
Net change in cash and cash equivalents		-		11		1,505		-		1,516
Cash and cash equivalents, beginning of period		-		157		3,241		-		3,398
Cash and cash equivalents, end of period	$	-	$	168	$	4,746	$	-	$	4,914

			Guarantor		Non-Guarantor		Consolidating
	Parent		Subsidiaries		Subsidiaries		Adjustments		Consolidated
Year Ended December 31, 2012
Net cash provided by (used in):
Operating activities	$	(432,255)	$	133,153	$	186,494	$	287,246	$	174,638
Total investing activities		(405,501)		(431,835)		(419,427)		250,122		(1,006,641)
Financing  activities		837,756		298,671		236,174		(537,368)		835,233
Net change in cash and cash equivalents		-		(11)		3,241		-		3,230
Cash and cash equivalents, beginning of period		-		168		-		-		168
Cash and cash equivalents, end of period	$	-	$	157	$	3,241	$	-	$	3,398

XML

Supplemental Condensed Consolidated Financial Information (Schedule Of Condensed Consolidating Statements Of Operations) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Total revenues	$ 799,978	$ 761,182	$ 713,956	$ 700,004	$ 580,128	$ 557,870	$ 560,939	$ 407,912	$ 2,975,120	$ 2,106,849	$ 1,246,020
Total costs and expenses	(684,124)	(707,084)	(698,543)	(691,475)	(581,918)	(582,369)	(548,866)	(410,871)	(2,781,226)	(2,124,024)	(1,184,108)
Equity income (loss)	(3,543)	(4,711)	(3,875)	(1,878)	(4,422)	(1,882)	(472)	2,040	(14,007)	(4,736)	6,323
Gain (loss) on asset dispositions	(448)	(636)	48,465	0	0	0	(1,519)	0	47,381	(1,519)	0
Goodwill impairment loss					(43,866)	0	0	0	0	(43,866)	0
Loss on early extinguishment of debt					0	0	(19)	(26,582)	0	(26,601)	0
Income (loss) before tax	111,863	48,751	60,003	6,651	(50,078)	(26,381)	10,063	(27,501)	227,268	(93,897)	68,235
Income tax (benefit) loss	(857)	(623)	(498)	(398)	(1,406)	(817)	(28)	(9)	(2,376)	(2,260)	176
Net income (loss)	112,720	49,374	60,501	7,049	(48,672)	(25,564)	10,091	(27,492)	229,644	(91,637)	68,059
Income attributable to non-controlling interests	(2,708)	(4,029)	(3,965)	(2,462)	(2,282)	(1,514)	(1,810)	(1,369)	(13,164)	(6,975)	(6,010)
Preferred unit imputed dividend effect	(11,379)	(11,378)	(11,378)	(11,378)	(11,378)	(11,378)	(6,729)	0	(45,513)	(29,485)	0
Preferred unit dividends in kind	(11,019)	(11,408)	(10,406)	(9,719)	(9,170)	(9,072)	(5,341)	0	(42,552)	(23,583)	0
Preferred unit dividends	(2,609)	(2,609)	(2,609)	(406)					(8,233)	0	0
Net income (loss) attributable to common limited partners and the General Partner	85,005	19,950	32,143	(16,916)	(71,502)	(47,528)	(3,789)	(28,861)	120,182	(151,680)	62,049
Other comprehensive income:
Adjustment for realized losses on cash flow hedges reclassified to net income (loss)									0	0	4,390
Comprehensive income (loss) attributable to common limited partners and the General Partner									120,182	(151,680)	66,439
Parent Company [Member]
Total revenues									0	0	0
Total costs and expenses									(93,716)	(86,965)	(39,462)
Equity income (loss)									310,196	14,954	101,511
Gain (loss) on asset dispositions									0	0
Goodwill impairment loss										0
Loss on early extinguishment of debt										(26,601)
Income (loss) before tax									216,480	(98,612)	62,049
Income tax (benefit) loss									0	0	0
Net income (loss)									216,480	(98,612)	62,049
Income attributable to non-controlling interests									0	0	0
Preferred unit imputed dividend effect									(45,513)	(29,485)
Preferred unit dividends in kind									(42,552)	(23,583)
Preferred unit dividends									(8,233)
Net income (loss) attributable to common limited partners and the General Partner									120,182	(151,680)	62,049
Other comprehensive income:
Adjustment for realized losses on cash flow hedges reclassified to net income (loss)											4,390
Comprehensive income (loss) attributable to common limited partners and the General Partner											66,439
Guarantor Subsidiaries [Member]
Total revenues									707,037	504,392	240,679
Total costs and expenses									(638,352)	(610,208)	(272,284)
Equity income (loss)									191,306	160,371	139,339
Gain (loss) on asset dispositions									47,829	(1,519)
Goodwill impairment loss										(43,866)
Loss on early extinguishment of debt										0
Income (loss) before tax									307,820	9,170	107,734
Income tax (benefit) loss									(2,376)	(2,260)	176
Net income (loss)									310,196	11,430	107,558
Income attributable to non-controlling interests									0	0	0
Preferred unit imputed dividend effect									0	0
Preferred unit dividends in kind									0	0
Preferred unit dividends									0
Net income (loss) attributable to common limited partners and the General Partner									310,196	11,430	107,558
Other comprehensive income:
Adjustment for realized losses on cash flow hedges reclassified to net income (loss)											4,390
Comprehensive income (loss) attributable to common limited partners and the General Partner											111,948
Non-Guarantor Subsidiaries [Member]
Total revenues									2,276,607	1,684,625	1,005,341
Total costs and expenses									(2,057,682)	(1,507,806)	(872,362)
Equity income (loss)									(14,007)	(4,736)	0
Gain (loss) on asset dispositions									(448)	0
Goodwill impairment loss										0
Loss on early extinguishment of debt										0
Income (loss) before tax									204,470	172,083	132,979
Income tax (benefit) loss									0	0	0
Net income (loss)									204,470	172,083	132,979
Income attributable to non-controlling interests									(13,164)	(6,975)	(6,010)
Preferred unit imputed dividend effect									0	0
Preferred unit dividends in kind									0	0
Preferred unit dividends									0
Net income (loss) attributable to common limited partners and the General Partner									191,306	165,108	126,969
Other comprehensive income:
Adjustment for realized losses on cash flow hedges reclassified to net income (loss)											0
Comprehensive income (loss) attributable to common limited partners and the General Partner											126,969
Consolidating Adjustments [Member]
Total revenues									(8,524)	(82,168)	0
Total costs and expenses									8,524	80,955	0
Equity income (loss)									(501,502)	(175,325)	(234,527)
Gain (loss) on asset dispositions									0	0
Goodwill impairment loss										0
Loss on early extinguishment of debt										0
Income (loss) before tax									(501,502)	(176,538)	(234,527)
Income tax (benefit) loss									0	0	0
Net income (loss)									(501,502)	(176,538)	(234,527)
Income attributable to non-controlling interests									0	0	0
Preferred unit imputed dividend effect									0	0
Preferred unit dividends in kind									0	0
Preferred unit dividends									0
Net income (loss) attributable to common limited partners and the General Partner									(501,502)	(176,538)	(234,527)
Other comprehensive income:
Adjustment for realized losses on cash flow hedges reclassified to net income (loss)											(4,390)
Comprehensive income (loss) attributable to common limited partners and the General Partner											$ (238,917)

XML

Summary Of Significant Accounting Policies (Schedule Of Net Income (Loss) Allocated To General Partner And Common Limited Partners) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net income (loss)	$ 112,720	$ 49,374	$ 60,501	$ 7,049	$ (48,672)	$ (25,564)	$ 10,091	$ (27,492)	$ 229,644	$ (91,637)	$ 68,059
Income attributable to non-controlling interests	(2,708)	(4,029)	(3,965)	(2,462)	(2,282)	(1,514)	(1,810)	(1,369)	(13,164)	(6,975)	(6,010)
Preferred unit imputed dividend effect	(11,379)	(11,378)	(11,378)	(11,378)	(11,378)	(11,378)	(6,729)	0	(45,513)	(29,485)	0
Preferred unit dividends in kind	(11,019)	(11,408)	(10,406)	(9,719)	(9,170)	(9,072)	(5,341)	0	(42,552)	(23,583)	0
Preferred unit dividends	(2,609)	(2,609)	(2,609)	(406)					(8,233)	0	0
Net income (loss) attributable to common limited partners and the General Partner	85,005	19,950	32,143	(16,916)	(71,502)	(47,528)	(3,789)	(28,861)	120,182	(151,680)	62,049
General Partner's cash incentive distributions									24,576	17,646	8,583
General Partner's ownership interest									1,922	(3,403)	1,075
Net income attributable to the General Partner's ownership interests									26,498	14,243	9,658
Net income (loss) attributable to common limited partners									93,684	(165,923)	52,391
Net income attributable to participating securities									15,562	0	772
Net income (loss) utilized in the calculation of net income from continuing operations attributable to common limited partners per unit									78,122	(165,923)	51,619
Phantom Unit Awards [Member]
Net income attributable to participating securities									1,630	0	772
Antidilutive securities excluded from computation of earnings per unit				1,543,000	1,476,000	1,455,000	967,000	1,055,000		1,240,000
Class D Preferred Units [Member]
Net income attributable to participating securities									$ 13,932	$ 0	$ 0
Contractual yield premium									1.50%
Antidilutive securities excluded from computation of earnings per unit				13,964,000	13,709,000	13,518,000	9,013,000			9,110,000

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Debt (Tables)

12 Months Ended

Dec. 31, 2014

Debt

Schedule of Total Debt

	December 31,		December 31,
	2014		2013
Revolving credit facility	$	385,000	$	152,000
6.625% Senior notes – due 2020		503,881		504,556
5.875% Senior notes – due 2023		650,000		650,000
4.750% Senior notes – due 2021		400,000		400,000
Capital lease obligations		229		754
Total debt		1,939,110		1,707,310
Less current maturities		(224)		(524)
Total long term debt	$	1,938,886	$	1,706,786

Schedule of Debt Maturities

Years Ended December 31:
2015	$	224
2016		5
2017		-
2018		-
2019		385,000
Thereafter		1,550,000
Total principal maturities		1,935,229
Unamortized premium		3,881
Total debt	$	1,939,110

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Consolidated Statement Of Equity (USD $) In Thousands, except Share data	Class D convertible preferred limited partners' interests [Member] Parent [Member] USD ($)	Class E preferred limited partners' interests [Member] Parent [Member] USD ($)	Class E preferred limited partners' interests [Member]	Parent [Member] Common Limited Partners [Member] USD ($)	Parent [Member] General Partner [Member] USD ($)	Accumulated Other Comprehensive Loss [Member] USD ($)	Non-controlling Interest [Member] USD ($)	Total USD ($)
Beginning Balance, value at Dec. 31, 2011				$ 1,245,163	$ 23,856	$ (4,390)	$ (28,401)	$ 1,236,228
Beginning Balance, units at Dec. 31, 2011				53,617,183
Issuance of units and General Partner capital contribution, units				10,782,462
Issuance of units and General Partner capital contributions, value				321,491	6,865			328,356
Equity compensation under incentive plans, units				180,417
Equity compensation under incentive plans, value				11,549				11,549
Purchase and retirement of treasury units, units				(24,052)
Purchase and retirement of treasury units, value				(695)				(695)
Distributions paid				(122,223)	(8,878)			(131,101)
Contributions from non-controlling interests							182	182
Other comprehensive income						4,390		4,390
Increase (decrease) in non-controlling interest related to business combination							89,440	89,440
Net income (loss)				52,391	9,658		6,010	68,059
Ending Balance, value at Dec. 31, 2012				1,507,676	31,501		67,231	1,606,408
Ending Balance, units at Dec. 31, 2012				64,556,010
Issuance of units and General Partner capital contribution, units	13,445,383			15,740,679
Issuance of units and General Partner capital contributions, value	397,681			526,263	19,359			943,303
Equity compensation under incentive plans, units				288,459
Equity compensation under incentive plans, value				19,143				19,143
Purchase and retirement of treasury units, units				0
Purchase and retirement of treasury units, value				0
Distributions paid in kind units	378,486
Distributions paid				(183,381)	(18,985)			(202,366)
Contributions from non-controlling interests							17,021	17,021
Distributions to non-controlling interests							(1,432)	(1,432)
Other comprehensive income								0
Increase (decrease) in non-controlling interest related to business combination							(30,535)	(30,535)
Net income (loss)	53,068			(165,923)	14,243		6,975	(91,637)
Ending Balance, value at Dec. 31, 2013	450,749			1,703,778	46,118		59,260	2,259,905
Ending Balance, units at Dec. 31, 2013	13,823,869			80,585,148
Issuance of units and General Partner capital contribution, units		5,060,000		3,558,005
Issuance of units and General Partner capital contributions, value		122,258		121,583	2,523			246,364
Equity compensation under incentive plans, units				459,232
Equity compensation under incentive plans, value				25,005				25,005
Purchase and retirement of treasury units, units				(66,321)
Purchase and retirement of treasury units, value				(2,210)				(2,210)
Distributions paid in kind units	1,195,581
Distributions paid		(6,030)		(210,076)	(27,364)			(243,470)
Distribution payable		(2,609)						(2,609)
Contributions from non-controlling interests							11,720	11,720
Distributions to non-controlling interests							(5,882)	(5,882)
Other comprehensive income								0
Net income (loss)	88,065	8,233		93,684	26,498		13,164	229,644
Ending Balance, value at Dec. 31, 2014	$ 538,814	$ 121,852		$ 1,731,764	$ 47,775		$ 78,262	$ 2,518,467
Ending Balance, units at Dec. 31, 2014	15,019,450	5,060,000		84,536,064

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Concentrations of Credit Risk (Narratives) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash and cash equivalents	8,103,000	4,914,000	3,398,000	$ 168,000
Uninsured cash amount	7,800,000
Customer Concentration Risk [Member] | Customer 1 [Member]
Concentration risk percentage	26.00%	29.00%	48.00%
Customer Concentration Risk [Member] | Customer 2 [Member]
Concentration risk percentage	13.00%	17.00%	15.00%
Customer Concentration Risk [Member] | Customer 3 [Member]
Concentration risk percentage	11.00%	14.00%
Credit Concentration Risk [Member] | Customer 1 [Member]
Concentration risk percentage	15.00%	23.00%
Credit Concentration Risk [Member] | Customer 2 [Member]
Concentration risk percentage	10.00%	20.00%
Credit Concentration Risk [Member] | Customer 3 [Member]
Concentration risk percentage		10.00%
Demand Deposits [Member]
Cash and cash equivalents	8,500,000
Parent Company [Member]
Cash and cash equivalents	0	0	0	$ 0

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Acquisitions

12 Months Ended

Dec. 31, 2014

Acquisitions

Acquisitions

NOTE 4 – ACQUISITIONS

TEAK Midstream, LLC

On May 7, 2013, the Partnership completed the TEAK Acquisition, which includes 100% of the equity interests of TEAK, for $974.7 million in cash, including final purchase price adjustments, less cash received.  The assets of these companies include gas gathering and processing facilities in Texas, which are referred to as SouthTX.  The acquisition included a 75% interest in T2 LaSalle; a 50% interest in T2 Eagle Ford; and a 50% interest in T2 Co-Gen.

The Partnership funded the purchase price for the TEAK Acquisition in part from the private placement of $400.0 million of Class D Preferred Units for net proceeds of $397.7 million, plus the General Partner’s contribution of $8.2 million to maintain its 2.0% general partner interest in the Partnership (see Note 6); and in part from the sale of 11,845,000 common limited partner units in a public offering for net proceeds of approximately $388.4 million, plus the General Partner’s contribution of $8.3 million to maintain its 2.0% general partner interest in the Partnership (see Note 6).  The Partnership funded the remaining purchase price from its senior secured revolving credit facility, and issued $400.0 million of 4.75% unsecured senior notes due November 15, 2021 (“4.75% Senior Notes”) on May 10, 2013 for net proceeds of $391.2 million to reduce the level of borrowings under the revolving credit facility as part of the TEAK Acquisition (see Note 14). 

The Partnership accounted for this transaction as a business combination.  Accordingly, the Partnership evaluated the identifiable assets acquired and liabilities assumed at their acquisition date fair values.  The following table presents the values assigned to the assets acquired and liabilities assumed in the TEAK Acquisition, based on their final estimated fair values at the date of the acquisition (in thousands):

Cash	$	8,074
Accounts receivable		11,055
Prepaid expenses and other		1,626
Property, plant and equipment		197,683
Intangible assets		430,000
Goodwill		186,050
Equity method investment in joint ventures		184,327
Total assets acquired		1,018,815
Accounts payable and accrued liabilities		(34,995)
Other long term liabilities		(1,075)
Total liabilities acquired		(36,070)
Net assets acquired		982,745
Less cash received		(8,074)
Net cash paid for acquisition	$	974,671

Cardinal Midstream, LLC

On December 20, 2012, the Partnership completed the acquisition of 100% of the equity interests held by Cardinal Midstream, LLC (“Cardinal”) in three wholly-owned subsidiaries for $598.9 million in cash, including final purchase price adjustments, less cash received (the “Cardinal Acquisition”). The assets of these companies include gas gathering, processing and treating facilities in Arkansas, Louisiana, Oklahoma and Texas.  The acquisition includes a 60% interest in Centrahoma. The remaining 40% ownership interest in Centrahoma is held by MarkWest, a wholly-owned subsidiary of MarkWest Energy Partners, L.P. (NYSE: MWE).

The Partnership funded the purchase price for the Cardinal Acquisition in part from the private placement of $175.0 million of its 6.625% senior unsecured notes due October 1, 2020 (“6.625% Senior Notes”) at a premium of 3.0%, for net proceeds of $176.1 million (see Note 14); and from the sale of 10,507,033 common limited partner units in a public offering at a negotiated purchase price of $31.00 per unit, generating net proceeds of approximately $319.3 million, including the General Partner’s contribution of $6.7 million to maintain its 2.0% general partner interest in the Partnership (see Note 6).  The Partnership funded the remaining purchase price from its senior secured revolving credit facility (see Note 14).

The Partnership accounted for this transaction as a business combination.  Accordingly, the Partnership evaluated the identifiable assets acquired and liabilities assumed at their respective acquisition date fair values. The following table presents the values assigned to the assets acquired and liabilities assumed in the Cardinal Acquisition, based on their final estimated fair values as of the date of acquisition, including the 40% non-controlling interest of Centrahoma held by MarkWest (in thousands):

Cash	$	1,184
Accounts receivable		13,783
Prepaid expenses and other		1,289
Property, plant and equipment		246,787
Intangible assets		232,740
Goodwill		214,090
Total assets acquired		709,873
Current portion of long-term debt		(341)
Accounts payable and accrued liabilities		(14,596)
Deferred tax liability, net		(35,353)
Long-term debt, less current portion		(604)
Total liabilities acquired		(50,894)
Non-controlling interest		(58,905)
Net assets acquired		600,074
Less cash received		(1,184)
Net cash paid for acquisition	$	598,890

The fair value of MarkWest’s 40% non-controlling interest in Centrahoma was based upon the purchase price allocated to the 60% controlling interest the Partnership acquired using an income approach.  This measurement uses significant inputs that are not observable in the market and thus represents a fair value measurement categorized within Level 3 of the fair value hierarchy.  The 40% non-controlling interest in Centrahoma was reduced by a 5.0% adjustment for lack of control that market participants would consider when measuring its fair value.

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Equity (Narrative) (Common Units) (Details) (USD $)	12 Months Ended			1 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Apr. 30, 2013	Dec. 31, 2012
General Partner capital contributions	$ 2,523,000	$ 19,359,000	$ 6,865,000
Common Limited Partners [Member]
Issuance of units in public offering, units				11,845,000	10,507,033
Price per common unit sold in public offering			$ 31.00	$ 34.00	$ 31.00
Net proceeds from issuance of common limited partner units				388,400,000	319,300,000
Equity Distribution Program (Member)
Maximum aggregate value of common units to be issued under an equity distribution agreement	250,000,000	150,000,000
Issuance of units in public offering, units	3,558,005	3,895,679	275,429
Commissions paid	1,200,000	2,800,000	200,000
General Partner capital contributions	2,500,000	2,900,000	200,000
Net proceeds from issuance of common limited partner units	121,600,000	137,800,000	8,700,000
General Partner [Member]
General Partner capital contributions				$ 8,300,000	$ 6,700,000
General Partner, ownership interest	2.00%

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Debt (Schedule Of Total Debt) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Total debt	$ 1,939,110,000	$ 1,707,310,000
Less current maturities	(224,000)	(524,000)
Total long term debt	1,938,886,000	1,706,786,000
Cash paid for interest, net of capitalized interest	85,900,000	66,300,000	28,300,000
Revolving Credit [Member]
Total debt	385,000,000	152,000,000
6.625% Senior notes - due 2020 [Member]
Total debt	503,881,000	504,556,000
5.875% Senior notes - due 2023 [Member]
Total debt	650,000,000	650,000,000
4.750% Senior notes - due 2021 [Member]
Total debt	400,000,000	400,000,000
Capital Lease Obligations [Member]
Total debt	$ 229,000	$ 754,000

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Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Deferred tax assets:
Net operating loss carryforwards and alternative minimum tax credits	17,269,000	$ 14,900,000
Deferred tax liabilities:
Excess of asset carrying value over tax basis	(48,183,000)	(48,190,000)
Net deferred tax liabilities	(30,914,000)	(33,290,000)
Net operating loss carryforwards subject to expiration	44,700,000
Minimum [Member]
Deferred tax liabilities:
Net operating loss carryforward expiration dates	Jan. 01, 2029
Maximum [Member]
Deferred tax liabilities:
Net operating loss carryforward expiration dates	Dec. 31, 2034

XML

Quarterly Financial Data

12 Months Ended

Dec. 31, 2014

Quarterly Financial Data

Quarterly Financial Data

NOTE 21 – QUARTERLY FINANCIAL DATA (Unaudited)

	Fourth Quarter(1)		Third Quarter(2)		Second Quarter(3)		First Quarter(4)
	(in thousands, except per unit data)
Year ended December 31, 2014:
Revenue	$	799,978	$	761,182	$	713,956	$	700,004
Costs and expenses		(684,124)		(707,084)		(698,543)		(691,475)
Equity loss in joint ventures		(3,543)		(4,711)		(3,875)		(1,878)
Gain (loss) on asset disposition		(448)		(636)		48,465		-
Income before tax		111,863		48,751		60,003		6,651
Income tax benefit		857		623		498		398
Net income		112,720		49,374		60,501		7,049
Income attributable to non-controlling interests		(2,708)		(4,029)		(3,965)		(2,462)
Preferred unit imputed dividend effect		(11,379)		(11,378)		(11,378)		(11,378)
Preferred unit dividends in kind		(11,019)		(11,408)		(10,406)		(9,719)
Preferred unit dividends		(2,609)		(2,609)		(2,609)		(406)
Net income (loss) attributable to common limited partners and the General Partner		85,005		19,950		32,143		(16,916)
Net income (loss) attributable to common limited partners per unit – basic and diluted(5)(6)	$	0.76	$	0.13	$	0.27	$	(0.27)

__________________________________

(1) Net income includes a $112.9 million non-cash derivative gain.

(2) Net income includes a $26.7 million non-cash derivative gain.

(3) Net income includes a $0.3 million non-cash derivative gain.

(4) Net income includes a $1.2 million non-cash derivative gain.

(5) For the first quarter of the year ended December 31, 2014, approximately 1,543,000 phantom units were excluded from the computation of diluted earnings attributable to common limited partners per unit as the impact of the conversion would have been anti-dilutive.

(6) For the first quarter of the year ended December 31, 2014, approximately 13,964,000 weighted average Class D Preferred Units were excluded from the computation of diluted earnings attributable to common limited partners per unit as the impact of the conversion would have been anti-dilutive.

	Fourth Quarter(1)		Third Quarter(2)		Second Quarter(3)		First Quarter(4)
	(in thousands, except per unit data)
Year ended December 31, 2013:
Revenue	$	580,128	$	557,870	$	560,939	$	407,912
Costs and expenses		(581,918)		(582,369)		(548,866)		(410,871)
Equity income (loss) in joint ventures		(4,422)		(1,882)		(472)		2,040
Loss on asset disposition		-		-		(1,519)		-
Goodwill impairment loss		(43,866)		-		-		-
Loss on early extinguishment of debt		-		-		(19)		(26,582)
Income (loss) before tax		(50,078)		(26,381)		10,063		(27,501)
Income tax benefit		1,406		817		28		9
Net income (loss)		(48,672)		(25,564)		10,091		(27,492)
Income attributable to non-controlling interests		(2,282)		(1,514)		(1,810)		(1,369)
Preferred unit imputed dividend effect		(11,378)		(11,378)		(6,729)		-
Preferred unit dividends in kind		(9,170)		(9,072)		(5,341)		-
Net loss attributable to common limited partners and the General Partner		(71,502)		(47,528)		(3,789)		(28,861)
Net loss attributable to common limited partners per unit – basic and diluted(5)(6)	$	(0.94)	$	(0.66)	$	(0.11)	$	(0.48)

__________________________________

(1) Net income includes a $15.4 million non-cash derivative loss.

(2) Net income includes a $23.6 million non-cash derivative loss.

(3) Net income includes a $24.3 million non-cash derivative gain.

(4) Net income includes a $13.7 million non-cash derivative loss.

(5) For the fourth, third, second, and first quarters of the year ended December 31, 2013, approximately 1,476,000,  1,455,000,  967,000, and 1,055,000 phantom units, respectively, were excluded from the computation of diluted earnings attributable to common limited partners per unit, because the inclusion of such phantom units would have been anti-dilutive.

(6) For the fourth, third and second quarters of the year ended December 31, 2013, approximately 13,709,000,  13,518,000 and 9,013,000 weighted average Class Preferred Units, respectively, were excluded from the computation of diluted earnings attributable to common limited partners per unit as the impact of the conversion would have been anti-dilutive.

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Derivative Instruments (Schedule Of Derivative Instruments, Gain (Loss) In Statement Of Financial Performance) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Derivative Instruments
Commodity contract - realized	$ (9,960)	$ (324)	$ 10,993
Commodity contract - unrealized	141,024	(28,440)	20,947
Derivative gain (loss), net	$ 131,064	$ (28,764)	$ 31,940

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Derivative Instruments (Tables)

12 Months Ended

Dec. 31, 2014

Derivative Instruments

Schedule of Derivative Assets at Fair Value

Offsetting of Derivative Assets
	Gross Amounts of Recognized Assets		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Assets Presented in the Consolidated Balance Sheets
As of December 31, 2014:
Current portion of derivative assets	$	88,007	$	-	$	88,007
Long-term portion of derivative assets		37,398		-		37,398
Total derivative assets, net	$	125,405	$	-	$	125,405
As of December 31, 2013:
Current portion of derivative assets	$	1,310	$	(1,136)	$	174
Long-term portion of derivative assets		5,082		(2,812)		2,270
Current portion of derivative liabilities		1,612		(1,612)		-
Long-term portion of derivative liabilities		949		(949)		-
Total derivative assets, net	$	8,953	$	(6,509)	$	2,444

Schedule of Derivative Liabilities at Fair Value

Offsetting of Derivative Liabilities
	Gross Amounts of Recognized Liabilities		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Liabilities Presented in the Consolidated Balance Sheets
As of December 31, 2014:
Current portion of derivative assets	$	-	$	-	$	-
Long-term portion of derivative assets		-		-		-
Total derivative liabilities, net	$	-	$	-	$	-
As of December 31, 2013:
Current portion of derivative assets	$	(1,136)	$	1,136	$	-
Long-term portion of derivative assets		(2,812)		2,812		-
Current portion of derivative liabilities		(12,856)		1,612		(11,244)
Long-term portion of derivative liabilities		(1,269)		949		(320)
Total derivative liabilities, net	$	(18,073)	$	6,509	$	(11,564)

Schedule of Derivative Instruments

Production			Average Fixed Price		Fair Value(2) Asset/
Period	Commodity	Volumes(1)	($/Volume)		(Liability)
Sold fixed price swaps
2015	Natural gas	27,010		4.18	$	30,945
2016	Natural gas	13,800		4.15		9,381
2017	Natural gas	6,600		4.11		2,137
2015	NGLs	71,442		1.22		43,094
2016	NGLs	34,650		1.03		16,822
2017	NGLs	10,080		1.04		4,777
2015	Crude oil	210		90.26		7,274
2016	Crude oil	30		90.00		848
Total fixed price swaps						115,278
Purchased put options
2015	NGLs	3,150		0.94		1,353
2015	Crude oil	270		89.18		8,774
Sold call options
2015	NGLs	1,260		1.28		-
Total options						10,127
Total derivatives					$	125,405

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(1) NGL volumes are stated in gallons.  Crude oil volumes are stated in barrels.  Natural gas volumes are stated in MMBTUs.

(2) See Note 2 for discussion on fair value methodology.

Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss)

	For the Years Ended December 31,
	2014			2013			2012
Derivatives previously designated as cash flow hedges
Loss reclassified from accumulated other comprehensive loss into natural gas and liquid sales	$	-	$		-	$		(4,390)

Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance

Derivatives not designated as hedges
Gain (loss) recognized in derivative gain (loss), net:
Commodity contract - realized(1)	$	(9,960)	$	(324)	$	10,993
Commodity contract - unrealized(2)		141,024		(28,440)		20,947
Derivative gain (loss), net	$	131,064	$	(28,764)	$	31,940

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(1) Realized gain (loss) represents the gain or loss incurred when the derivative contract expires and/or is cash settled.

(2) Unrealized gain (loss) represents the mark-to-market gain (loss) recognized on open derivative contracts, which have not yet settled.

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Debt

12 Months Ended

Dec. 31, 2014

Debt

Debt and Capital Leases

NOTE 14 ─ DEBT

Total debt consists of the following (in thousands):

	December 31,		December 31,
	2014		2013
Revolving credit facility	$	385,000	$	152,000
6.625% Senior notes – due 2020		503,881		504,556
5.875% Senior notes – due 2023		650,000		650,000
4.750% Senior notes – due 2021		400,000		400,000
Capital lease obligations		229		754
Total debt		1,939,110		1,707,310
Less current maturities		(224)		(524)
Total long term debt	$	1,938,886	$	1,706,786

The aggregate amount of the Partnership’s debt maturities is as follows (in thousands):

Years Ended December 31:
2015	$	224
2016		5
2017		-
2018		-
2019		385,000
Thereafter		1,550,000
Total principal maturities		1,935,229
Unamortized premium		3,881
Total debt	$	1,939,110

Cash payments for interest related to debt, net of capitalized interest, were $85.9 million, $66.3 million and $28.3 million for the years ended December 31, 2014, 2013 and 2012, respectively.

Revolving Credit Facility

At December 31, 2014, the Partnership had an $800.0 million senior secured revolving credit facility with a syndicate of banks that matures in August 2019. Borrowings under the revolving credit facility bear interest, at the Partnership’s option, at either (1) the higher of (a) the prime rate, (b) the federal funds rate plus 0.50% and (c) the LIBOR rate plus 1.0%, or (2) the LIBOR rate for the applicable period (each plus the applicable margin). The weighted average interest rate for borrowings on the revolving credit facility, at December 31, 2014, was 2.7%.  Up to $50.0 million of the revolving credit facility may be utilized for letters of credit, of which $4.2 million was outstanding at December 31, 2014.  These outstanding letters of credit amounts were not reflected as borrowings on the Partnership’s consolidated balance sheets.  At December 31, 2014, the Partnership had $410.8 million of remaining committed capacity under its revolving credit facility.

Borrowings under the revolving credit facility are secured by (i) a lien on and security interest in all the Partnership’s property and that of its subsidiaries, except for the assets owned by Atlas Pipeline Mid-Continent WestOk, LLC (“WestOK LLC”) and Atlas Pipeline Mid-Continent WestTex, LLC (“WestTX LLC”),entities in which the Partnership has 95% interests, and Centrahoma, in which the Partnership has a 60% interest;and their respective subsidiaries; and (ii) by the guaranty of each of the Partnership’s consolidated subsidiaries other than the joint venture companies.  The revolving credit facility contains customary covenants, including requirements that the Partnership maintain certain financial thresholds and restrictions on the Partnership’s ability to (1) incur additional indebtedness, (2) make certain acquisitions, loans or investments, (3) make distribution payments to its unitholders if an event of default exists, or (4) enter into a merger or sale of assets, including the sale or transfer of interests in its subsidiaries, without approval of the lenders.  The Partnership is unable to borrow under its revolving credit facility to pay distributions of available cash to unitholders because such borrowings would not constitute “working capital borrowings” pursuant to its partnership agreement.

The events that constitute an event of default for the revolving credit facility are also customary for loans of this size, including payment defaults, breaches of representations or covenants contained in the credit agreement, adverse judgments against the Partnership in excess of a specified amount, and a change of control of the General Partner.

On August 28, 2014, the Partnership entered into a Second Amended and Restated Credit Agreement (the “Revised Credit Agreement”) which, among other changes:

· extended the maturity date to August 28, 2019;

· increased the revolving credit commitment from $600 million to $800 million and the incremental revolving credit amount from $200 million to $250 million;

· reduced by 0.25% the applicable margin used to determine interest rates for LIBOR Rate Loans, as defined in the Revised Credit Agreement, and for Base Rate Loans, as defined in the Revised Credit Agreement, depending on the Partnership’s Consolidated Funded Debt Ratio, as defined in the Revised Credit Agreement;

· allows the Partnership to request incremental term loans, provided the sum of any revolving credit commitments and incremental term loans may not exceed $1.05 billion; and

· changed the per annum interest rate on borrowings to (i) the higher of (a) the prime rate, (b) the federal funds rate plus 0.50% and (c) the LIBOR rate plus 1.0%, or (ii) the LIBOR rate for the applicable period, in each case plus the applicable margin.

As of December 31, 2014, the Partnership was in compliance with all covenants under the credit facility.

Senior Notes

At December 31, 2014, the Partnership had $500.0 million principal outstanding of the 6.625% Senior Notes, $650.0 million principal outstanding of the5.875% unsecured senior notes due August 1, 2023 (“5.875% Senior Notes”), and $400.0 million of the 4.75% Senior Notes (with the 6.625% Senior Notes and 5.875% Senior Notes, the “Senior Notes”).

On January 15, 2015, TRP announced cash tender offers to redeem any and all of the outstanding $500.0 million aggregate principal amount of the 6.625% Senior Notes; $400.0 million aggregate principal amount of the 4.75% Senior Notes; and $650.0 million aggregate principal amount of the 5.875% Senior Notes.   TRP made the cash tender offers in connection with, and conditioned upon, the consummation of the Merger (see Note 3).  The Merger, however, is not conditioned on the consummation of the tender offers. On February 2, 2015, TRP announced as of January 29, 2015, it had received tenders pursuant to its previously announced cash tender offers on January 15, 2015 from holders representing:

· less than a majority of the total outstanding $500.0 million of the 6.625% Senior Notes;

· approximately 98.3% of the total outstanding $400.0 million of the 4.75% Senior Notes; and

· approximately 91.0% of the total outstanding $650.0 million of the 5.875% Senior Notes.

Also on February 2, 2015, TRP announced a change of control cash tender offer for any and all of the outstanding $500.0 million of the 6.625% Senior Notes.  TRP made the change of control cash tender offer in connection with, and conditioned upon, the consummation of the Merger.  The Merger, however, is not conditioned on the consummation of the change in control cash tender offer.  The change in control cash tender offer was made independently of TRP’s January 15, 2015 cash tender offers.

The Senior Notes are subject to repurchase by the Partnership at a price equal to 101% of their principal amount, plus accrued and unpaid interest, upon a change of control or upon certain asset sales if the Partnership does not reinvest the net proceeds within 360 days.  The Senior Notes are junior in right of payment to the Partnership’s secured debt, including the Partnership’s obligations under its revolving credit facility.

Indentures governing the Senior Notes contain covenants, including limitations of the Partnership’s ability to: incur certain liens; engage in sale/leaseback transactions; incur additional indebtedness; declare or pay distributions if an event of default has occurred; redeem, repurchase or retire equity interests or subordinated indebtedness; make certain investments; or merge, consolidate or sell substantially all its assets, without consent.  The Partnership is in compliance with these covenants as of December 31, 2014.

6.625% Senior Notes

The 6.625% Senior Notes are presented combined with a net $3.9 million unamortized premium as of December 31, 2014.  Interest on the 6.625% Senior Notes is payable semi-annually in arrears on April 1 and October 1.  The 6.625% Senior Notes are due on October 1, 2020 and redeemable at any time after October 1, 2016, at certain redemption prices, together with accrued and unpaid interest to the date of redemption.

On September 28, 2012, the Partnership issued $325.0 million of the 6.625% Senior Notes in a private placement transaction, at par.  The Partnership received net proceeds of $318.9 million after underwriting commissions and other transaction costs and utilized the proceeds to reduce the outstanding balance on its revolving credit facility. 

On December 20, 2012, the Partnership issued $175.0 million of the 6.625% Senior Notes in a private placement transaction.  The 6.625% Senior Notes were issued at a premium of 103.0% of the principal amount for a yield of 6.0%.  The Partnership received net proceeds of $176.1 million after underwriting commissions and other transaction costs and utilized the proceeds to partially finance the Cardinal Acquisition (see Note 4).  Of the $176.1 million net proceeds, $176.5 million was received during the year ended December 31, 2012, while additional expenses of $0.4 million were incurred during the year ended December 31, 2013.

5.875% Senior Notes

On February 11, 2013, the Partnership issued $650.0 million of the 5.875% Senior Notes in a private placement transaction.  The 5.875% Senior Notes were issued at par.  The Partnership received net proceeds of $637.3 million after underwriting commissions and other transactions costs and utilized the proceeds to redeem the 8.75% Senior Notes and repay a portion of the outstanding indebtedness under the credit facility.  Interest on the 5.875% Senior Notes is payable semi-annually in arrears on February 1 and August 1.  The 5.875% Senior Notes are due on August 1, 2023, and redeemable any time after February 1, 2018, at certain redemption prices, together with accrued and unpaid interest to the date of redemption.

4.75% Senior Notes

On May 10, 2013, the Partnership issued $400.0 million of the 4.75% Senior Notes in a private placement transaction.  The 4.75% Senior Notes were issued at par.  The Partnership received net proceeds of $391.2 million after underwriting commissions and other transactions costs and utilized the proceeds to repay a portion of the outstanding indebtedness under the revolving credit agreement as part of the TEAK Acquisition (see Note 4).  Interest on the 4.75% Senior Notes is payable semi-annually in arrears on May 15 and November 15.  The 4.75% Senior Notes are due on November 15, 2021 and are redeemable any time after March 15, 2016, at certain redemption prices, together with accrued and unpaid interest to the date of redemption.

8.75% Senior Notes

On January 28, 2013, the Partnership commenced a cash tender offer for any and all of its outstanding 8.75% Senior Notes and a solicitation of consents to eliminate most of the restrictive covenants and certain of the events of default contained in the indenture governing the 8.75% Senior Notes (“8.75% Senior Notes Indenture”).  Approximately $268.4 million aggregate principal amount of the 8.75% Senior Notes were validly tendered as of the expiration date of the consent solicitation.  In February 2013, the Partnership accepted for purchase all 8.75% Senior Notes validly tendered as of the expiration of the consent solicitation and paid $291.4 million to redeem the $268.4 million principal plus $11.2 million make-whole premium, $3.7 million accrued interest and $8.0 million consent payment.  The Partnership entered into a supplemental indenture amending and supplementing the 8.75% Senior Notes Indenture.

On March 12, 2013, the Partnership paid $105.6 million to redeem the remaining $97.3 million 8.75% Senior Notes not purchased in connection with the January 28, 2013 tender offer, plus a $6.3 million make-whole premium and $2.0 million in accrued interest.  The Partnership funded the redemption with a portion of the net proceeds from the issuance of the 5.875% Senior Notes. During the year ended December 31, 2013, the Partnership recorded a loss of $26.6 million within loss on early extinguishment of debt on the Partnership’s consolidated statements of operations, related to the redemption of the 8.75% Senior Notes.  The loss includes $17.5 million premiums paid; $8.0 million consent payment; $5.3 million write off of deferred financing costs, offset by $4.2 million recognition of unamortized premium.