Filed Pursuant to Rule 424(b)(2)
Registration Nos. 333-141058
333-141058-01

CALCULATION OF REGISTRATION FEE

Title of Each Class of Securities To Be Registered	Proposed Maximum Aggregate Offering Price	Amount of Registration Fee(1)
Debt Securities	$350,000,000	$19,530

(1) The filing fee, calculated in accordance with Rule 457(r), has been transmitted to the SEC in connection with the securities offered from Registration Statement File No. 333-141058 by means of this prospectus supplement.

PROSPECTUS SUPPLEMENT

(To Prospectus Dated March 5, 2007)

$350,000,000

Boardwalk Pipelines, LP

5.75% Senior Notes due 2019

Fully and unconditionally guaranteed by Boardwalk Pipeline Partners, LP

This is an offering by Boardwalk Pipelines, LP of $350,000,000 of 5.75% senior notes due 2019. Interest on the notes is payable on March 15 and September 15 of each year beginning March 15, 2010. Interest on the notes will accrue from August 21, 2009. The notes will mature on September 15, 2019.

The notes will be redeemable, in whole or in part, at our option at any time, at a redemption price equal to the greater of 100% of the principal amount of the notes to be redeemed or the “make-whole” redemption price, plus accrued and unpaid interest, if any, to the date of redemption.

The notes will be our senior unsecured obligations and will rank equally with all of our existing and future senior unsecured indebtedness. The notes will be fully and unconditionally guaranteed by our parent, Boardwalk Pipeline Partners, LP. The guarantee will rank equally with all of the existing and future senior unsecured indebtedness of the guarantor. The notes and the guarantee will be effectively subordinated to all of our subsidiaries’ existing and future indebtedness and to all of our and the guarantor’s future secured indebtedness to the extent of the value of the assets securing such indebtedness.

Investing in the notes involves risk. Please read “Risk Factors” beginning on page S-8 of this prospectus supplement and on page 3 of the accompanying base prospectus as well as the risk factors discussed in Boardwalk Pipeline Partners, LP’s Annual Report on Form 10-K for the fiscal year ended December 31, 2008 and Boardwalk Pipeline Partners, LP’s Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2009.

	Public Offering Price(1)			Underwriting Discount			Proceeds to us (before expenses)(1)
Per Note		99.813	%		0.650	%		99.163	%
Total	$	349,345,500		$	2,275,000		$	347,070,500

(1) Plus accrued interest from August 21, 2009, if settlement date occurs after that date.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus supplement and the accompanying base prospectus are truthful or complete. Any representation to the contrary is a criminal offense.

The notes will not be listed on any national securities exchange or quoted on any automated quotation system. Currently, there is no public market for the notes.

It is expected that delivery of the notes will be made to investors in registered book entry form only through the facilities of The Depository Trust Company on or about August 21, 2009.

Joint Book-Running Managers

Citi J.P. Morgan Wells Fargo Securities

August 18, 2009

TABLE OF CONTENTS

Prospectus Supplement

	Page
Summary	S-1
Risk Factors	S-8
Use of Proceeds	S-10
Capitalization	S-11
Description of the Notes	S-12
Certain United States Federal Income Tax Considerations	S-24

	Page
Underwriting	S-28
Legal Matters	S-30
Experts	S-30
Forward-Looking Statements and Associated Risks	S-30
Where You Can Find More Information	S-32

Base Prospectus

	Page
About This Prospectus	1
About Boardwalk Pipeline Partners, LP	1
About Boardwalk Pipelines, LP	1
Where You Can Find More Information	1
Information We Incorporate by Reference	2
Risk Factors	3
Forward-Looking Statements and Associated Risks	3
Ratio of Earnings to Fixed Charges	4
Use of Proceeds	5
Description of the Common Units	6

	Page
How We Make Cash Distributions	9
Conflicts of Interest and Fiduciary Duties	19
The Partnership Agreement	26
Description of Debt Securities	40
Material Tax Consequences	50
Legal Matters	65
Experts	65
Appendix A Application for Transfer of Common Units	A-1
Appendix B Certification form for Non-Individual Investors	B-1

This document is in two parts. The first part is the prospectus supplement, which describes the specific terms of this offering. The second part is the accompanying base prospectus, which gives more general information, some of which may not apply to this offering. Generally, when we refer to the “prospectus,” we are referring to both parts combined. If information in this prospectus supplement conflicts with information in the accompanying base prospectus, you should rely on the information in this prospectus supplement.

You should rely only on the information contained in or incorporated by reference in this prospectus supplement and the accompanying base prospectus. We have not authorized anyone to provide you with different information. We are not making an offer of the notes in any state where such offer is not permitted. You should not assume that the information contained in this prospectus supplement or the accompanying base prospectus or the information that is contained in or incorporated by reference herein is accurate as of any date other than its respective date.

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SUMMARY

This summary highlights information contained elsewhere in this prospectus supplement and the accompanying base prospectus. It does not contain all of the information you should consider before making an investment decision. You should read the entire prospectus supplement, the accompanying base prospectus, the documents incorporated by reference and the other documents to which we refer for a more complete understanding of this offering. Please read “Risk Factors” beginning on page S-8 of this prospectus supplement and page 3 of the accompanying base prospectus as well as the risk factors discussed in Boardwalk Pipeline Partners, LP’s Annual Report on Form 10-K for the fiscal year ended December 31, 2008 and Boardwalk Pipeline Partners, LP’s Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2009, for more information about important factors that you should consider before buying notes in this offering.

References in this prospectus supplement to “Boardwalk Pipelines,” “we,” “our,” “us” or similar terms, when used in the present tense or for historical periods, refer to Boardwalk Pipelines, LP together, unless otherwise indicated or the context otherwise requires, with our operating subsidiaries. References in this prospectus to our “general partner” refer to Boardwalk Operating GP, LLC. References in this prospectus to the “master partnership,” “our parent,” “the guarantor” or “Boardwalk Pipeline Partners” refer to Boardwalk Pipeline Partners, LP. References to “Loews” refer to Loews Corporation, the ultimate parent company of the master partnership’s general partner. We are the wholly owned subsidiary of the master partnership and the master partnership has no operations other than through us.

Boardwalk Pipelines, LP

We are a wholly owned subsidiary of Boardwalk Pipeline Partners, LP. Our business is conducted by Gulf Crossing Pipeline Company LLC (Gulf Crossing), Gulf South Pipeline Company, LP (Gulf South) and Texas Gas Transmission, LLC (Texas Gas) (collectively, the operating subsidiaries).

As of August 17, 2009, Boardwalk Pipelines Holding Corp. (BPHC) a wholly-owned subsidiary of Loews Corporation (Loews), owned 114.2 million of the master partnership’s common units and all 22.9 million of the master partnership’s class B units and, through Boardwalk GP, LP (Boardwalk GP), an indirect wholly-owned subsidiary of BPHC, held the 2% general partner interest and all of the incentive distribution rights (IDRs) in the master partnership. As of August 17, 2009, the common units, class B units and general partner interest owned by BPHC represented approximately 72% of the master partnership’s equity interests, excluding IDRs.

Our Business

Through our subsidiaries, Gulf Crossing, Gulf South and Texas Gas, we own and operate three interstate natural gas pipeline systems including integrated storage facilities. Our pipeline systems originate in the Gulf Coast region and extend northeasterly to the Midwestern states of Tennessee, Kentucky, Illinois, Indiana and Ohio. Average daily throughput on our pipeline systems during 2008 was approximately 4.8 billion cubic feet (Bcf) and for the first six months of 2009 was approximately 5.9 Bcf. Our natural gas storage facilities are comprised of eleven underground storage fields located in four states with aggregate working gas capacity of approximately 160.0 Bcf.

Our transportation services consist of firm transportation, whereby the customer pays a capacity reservation charge to reserve pipeline capacity at certain receipt and delivery points along our pipeline systems, plus a commodity and fuel charge on the volume of natural gas actually transported, and interruptible transportation, whereby the customer pays to transport gas only when capacity is available and used. We offer firm storage services in which the customer reserves and pays for a specific amount of storage capacity, including injection

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and withdrawal rights, and interruptible storage and parking and lending (PAL) services where the customer receives and pays for capacity only when it is available and used. Some PAL agreements are paid for at inception of the service and revenues for these agreements are recognized as service is provided over the term of the agreement. For the twelve months ended December 31, 2008 and the six months ended June 30, 2009, the percentage of total operating revenues associated with firm contracts was approximately 88% and 87%, respectively. Our operating costs and expenses typically do not vary significantly based upon the amount of gas transported, with the exception of fuel consumed at our compressor stations.

We are not in the business of buying and selling natural gas other than for system management purposes, but changes in the price of natural gas can affect the overall supply and demand of natural gas, which in turn can affect our results of operations. Our business is affected by trends involving natural gas price levels and natural gas price spreads, including spreads between physical locations on our pipeline system, which affect our transportation revenues, and spreads in natural gas prices across time (for example summer to winter), which primarily affect our storage and PAL revenues.

Recent Developments

Pipeline Expansion Projects

We are in the process of completing three pipeline expansion projects: the Southeast Expansion, the Gulf Crossing Pipeline and the Fayetteville and Greenville Laterals. We have also recently completed the East Texas Pipeline. The Southeast Expansion, Gulf Crossing Pipeline, and East Texas Pipeline consist of approximately 710 miles of 42-inch pipeline and the Fayetteville and Greenville Laterals consist of approximately 260 miles of 36-inch pipeline. During the permitting process we discovered anomalies in certain pipeline segments on each of these projects. We have completed remediation of the anomalies on the 42-inch pipelines, have received authority from the Pipeline and Hazardous Materials Safety Administration (PHMSA) to operate these pipelines at normal operating pressures (72% of the pipeline’s Specified Minimum Yield Strength (SMYS)) and, if additional testing is successful, expect to request permission from PHMSA to operate these pipelines at higher operating pressures (up to 80% SMYS) under special permits.

We are also working with PHMSA on a remediation protocol to be adopted to return the Fayetteville and Greenville Laterals to normal operating pressures. We cannot predict when or if this protocol will be completed and approved by PHMSA or the scope, cost or timing of any approved remediation plan. If additional testing is successful, we expect to request permission from PHMSA to operate the Fayetteville Lateral at higher operating pressures under a special permit.

With respect to each of our pipeline expansion projects, until we have remediated the pipe anomalies, performed additional testing required by PHMSA and obtained PHMSA’s consent to increase operating pressures to normal levels, as well as higher levels under special permits, we will not be able to operate that pipeline at its anticipated peak-day transmission capacity, which could continue to have a material adverse affect on our business, financial condition, results of operations and cash flow. PHMSA retains discretion as to whether to grant, or to maintain in force, authority to operate a pipeline at higher than normal operating pressures. For more information, please read “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Expansion Projects” and “Risk Factors—A portion of the expected maximum daily capacity of our pipeline expansion projects is contingent on our receiving and maintaining authority from PHMSA to operate at higher operating pressures” and “—We are undertaking large, complex expansion projects which involve significant risks that may adversely affect our business” in the master partnership’s Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2009.

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Equity Offering

On August 14, 2009, Boardwalk Pipeline Partners issued 8,102,450 common units in an underwritten public offering at $23.00 per common unit. Total net proceeds from the offering, after underwriter’s discount of $0.85 per common unit and offering expenses, were approximately $183.1 million, including a $3.8 million contribution received from the master partnership’s general partner to maintain its 2% general partner interest. The net proceeds will be used to fund a portion of the cost of our expansion projects, either directly, or indirectly by increasing our borrowing capacity available to fund such projects through repayment of indebtedness under our revolving credit facility.

Executive Offices, Ownership and Structure

We are a wholly owned subsidiary of the master partnership. We conduct the master partnership’s operations and own its operating assets. Our general partner is managed by the master partnership as its sole member. In turn, the master partnership is managed by its general partner, Boardwalk GP. As a limited partnership, Boardwalk GP does not have a board of directors and is managed by its general partner, Boardwalk GP, LLC, a Delaware limited liability company (or BGL). BGL has a board of directors. Loews indirectly owns 100% of the equity interests in BGL and Boardwalk GP. For information about the executive officers and directors of BGL, please read the information described under “Information We Incorporate By Reference.” Our general partner and its affiliates are entitled to be reimbursed for all direct and indirect expenses incurred on our behalf, including overhead allocated to us by Loews consistent with accounting and cost allocation methodologies generally permitted by the Federal Energy Regulatory Commission (FERC) for rate-making purposes and past business practices.

The master partnership’s principal executive offices are located at 9 Greenway Plaza, Suite 2800, Houston, Texas 77046, and our telephone number is (866) 913-2122.

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The following diagram reflects a simplified version of our organizational structure.

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The Offering

Issuer Boardwalk Pipelines, LP

Guarantor Boardwalk Pipeline Partners, LP

Notes Offered $350,000,000 aggregate principal amount of 5.75% senior notes due September 15, 2019, or the notes.

Maturity Date The notes will mature on September 15, 2019.

Interest The notes will bear interest at the rate of 5.75% per year. Interest on the notes will be payable in arrears on March 15 and September 15 of each year they are outstanding, beginning on March 15, 2010.

Optional Redemption The notes will be redeemable, in whole or in part, at our option at any time, at a redemption price equal to the greater of 100% of the principal amount of the notes to be redeemed or the “make whole” redemption price, plus accrued and unpaid interest, if any, to the date of redemption. See “Description of the Notes—Optional Redemption.”

Ranking The notes will be:

• our, but not our subsidiaries’, senior unsecured obligations;

• equal in right of payment to all of our, but not our subsidiaries’, existing and future senior unsecured debt, including the $250.0 million aggregate principal amount of our 5.875% notes due 2016, $300.0 million aggregate principal amount of our 5.50% notes due 2017, $185.0 million aggregate principal amount of our 5.20% notes due 2018 and borrowings under our revolving credit facility and our Subordinated Loan Agreement with BPHC;

• senior in right of payment to any of our, but not our subsidiaries’, existing and future subordinated debt;

• effectively subordinated in right of payment to all of our future secured debt to the extent of the value of the assets securing such indebtedness; and

• effectively subordinated in right of payment to all existing and future debt and other liabilities of our subsidiaries, including trade payables, the $250.0 million aggregate principal amount of 5.50% notes due 2013, $250.0 million aggregate principal amount of 4.60% notes due 2015 and $100.0 million aggregate principal amount of 7.25% debentures due 2027 of Texas Gas, the $225.0 million aggregate principal amount of 5.75% notes due 2012, $275.0 million aggregate principal amount of 5.05% notes due 2015 and $275.0 million aggregate principal amount of 6.30% notes due 2017 of Gulf South, and Texas Gas’ and Gulf South’s borrowings under our revolving credit facility.

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The indenture governing the notes will permit us to incur additional debt, all of which may be senior debt and, subject to specified limitations, secured.

Guarantee The notes will be fully and unconditionally guaranteed by the master partnership on a senior unsecured basis. The master partnership’s guarantee of the notes will rank equally with all its existing and future senior unsecured debt, including its guarantee of indebtedness under our revolving credit facility. The guarantee will be effectively subordinated in right of payment to all of the master partnership’s future secured debt to the extent of the value of the assets securing such secured debt.

Use of Proceeds We intend to use the estimated net proceeds of approximately $346.6 million from this offering (after deducting underwriter discounts and estimated offering expenses) to repay $100 million of borrowings under our Subordinated Loan Agreement with BPHC and to fund a portion of the cost of our expansion projects, either directly, or indirectly by increasing our borrowing capacity available to fund such projects through repayment of indebtedness under our revolving credit facility. Please read “Use of Proceeds” in this prospectus supplement.

Affiliates of the underwriters participating in this offering are lenders under our revolving credit facility. Please read “Underwriting— Relationships.”

Risk Factors You should carefully consider the information set forth in the section entitled “Risk Factors” and the other information contained in or incorporated by reference in this prospectus in deciding whether to invest in the notes.

Further Issues We may from time to time, without notice to or the consent of the holders of the notes, create and issue additional debt securities under the indenture governing the notes having the same terms as, and ranking equally with, the notes in all respects (except for the offering price and issue date).

Trustee, Registrar and Paying Agent The Bank of New York Mellon Trust Company, N.A.

Covenants of the Indenture We will issue the notes under an indenture which will, among other things, restrict our ability to create liens, enter into sale and leaseback transactions, enter into mergers or sell all or substantially all of our assets. See “Description of the Notes—Certain Covenants” and “—Merger, Amalgamation, Consolidation and Sale of Assets.”

Governing Law State of New York.

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Ratio of Earnings to Fixed Charges

The following table sets forth the master partnership’s ratio of consolidated earnings to fixed charges for the periods presented:

	Boardwalk Pipeline Partners, LP
	Six Months Ended June 30,				Year Ended December 31,
	2009(1)		2008		2008		2007		2006		2005		2004
Ratio of earnings to fixed charges	1.97	x	3.12	x	2.67	x	3.23	x	3.93	x	3.58	x	3.66	x

(1) A portion of the proceeds received from this offering will be used to repay $100 million of borrowings under our Subordinated Loan Agreement, which on a pro forma basis would have no impact on the ratio of earnings to fixed charges for the six months ended June 30, 2009.

For purposes of calculating the ratio of consolidated earnings to fixed charges:

• “earnings” is the aggregate of the following items: pre-tax income or loss from continuing operations before income or loss from equity investees; plus fixed charges; plus amortization of capitalized interest; plus distributed income of equity investees; less our share of pre-tax losses of equity investees for which charges arising from guarantees are included in fixed charges; less capitalized interest; less preference security dividend requirements of consolidated subsidiaries; and less the minority interest in pre-tax income of subsidiaries that have not incurred fixed charges; and

• “fixed charges” means the sum of the following: interest expensed and capitalized; amortized premiums, discounts and capitalized expenses related to indebtedness; an estimate of the interest within rental expense; and preference security dividend requirements of consolidated subsidiaries. Fixed charges are not reduced by any allowance for funds used during construction.

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RISK FACTORS

You should carefully consider the risk factors described below, the risk factors described in the master partnership’s Annual Report on Form 10-K for the fiscal year ended December 31, 2008 and Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2009, and the risk factors relating to our business described under the caption “Risk Factors” beginning on page 3 of the accompanying base prospectus before making an investment decision. These risks are not the only ones we face. Additional risks not presently known to us or that we currently deem immaterial may also impair our business operations. Our business, financial condition, results of operations and cash flow could be materially adversely affected by any of these risks. You should consider carefully these risk factors together with all of the other information included in this prospectus supplement, the accompanying base prospectus and the documents we have incorporated by reference in this prospectus before investing in our notes.

Risks Relating to the Notes

We may not be able to generate sufficient cash flow to meet our debt service obligations.

Our ability to make payments on and to refinance our indebtedness, including the notes, and to fund capital expenditures will depend on our ability to generate cash in the future. This, to a certain extent, is subject to general economic, financial, competitive, legislative, regulatory and other factors that are beyond our control.

We cannot assure you that we will generate sufficient cash flow from operations, that currently anticipated operating improvements will be realized or that future borrowings will be available to us under our revolving credit facility in an amount sufficient to fund our liquidity needs. We may need to refinance all or a portion of our indebtedness, including the notes, on or before maturity. We cannot assure you that we will be able to refinance any of our indebtedness, including our revolving credit facility and the notes, on commercially reasonable terms or at all.

Our substantial indebtedness and other financial obligations could impair our financial condition and our ability to fulfill our debt obligations.

We have substantial indebtedness and other financial obligations. As of August 17, 2009, prior to giving effect to this offering, we had:

• total indebtedness of approximately $3.0 billion; and

• $221.5 million of undrawn and available capacity under our revolving credit facility (excluding $50.0 million related to a bankrupt lender that has not funded amounts since it filed for bankruptcy protection in the third quarter 2008). See “Capitalization.”

We will be permitted, under our revolving credit facility, the indenture governing the notes and the indentures governing our existing notes, to incur additional debt, including secured debt, subject to certain limitations under our revolving credit facility and under the indenture governing the notes. If we incur additional debt following this offering, our increased leverage could, for example:

• make it more difficult for us to satisfy our obligations under the notes or other indebtedness and, if we fail to comply with the requirements of the other indebtedness, could result in an event of default on the notes or such other indebtedness;

• require us to dedicate a substantial portion of our cash flow from operations to required payments on indebtedness, thereby reducing the availability of cash flow for working capital, capital expenditures and other general business activities;

• limit our ability to obtain additional financing in the future for working capital, capital expenditures and other general business activities;

• limit our flexibility in planning for, or reacting to, changes in our business and the industry in which we operate;

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• detract from our ability to successfully withstand a downturn in our business or the economy generally; and

• place us at a competitive disadvantage relative to less leveraged competitors.

If we are unable to meet our debt service obligations and other financial obligations, we could be forced to restructure or refinance our indebtedness and other financial obligations, seek additional equity capital or sell our assets. We may be unable to obtain such financing or capital or sell our assets on satisfactory terms, if at all.

In the event of our bankruptcy or liquidation, holders of the notes will be paid from any assets remaining after payments to any holders of our secured debt and the debt of our subsidiaries.

The notes will be our and the guarantor’s general unsecured senior obligations, and effectively subordinated to any secured debt that we may incur in the future to the extent of the value of the assets securing that debt and to any indebtedness of our subsidiaries. Our subsidiaries have a substantial amount of indebtedness, including, as of August 17, 2009, an aggregate of approximately $1.4 billion in notes issued by Texas Gas and Gulf South and $418.5 million Texas Gas and Gulf South have borrowed under our $1.0 billion revolving credit facility. Our subsidiaries may incur additional indebtedness in the future. Our right to receive any assets of our subsidiaries, as an equity holder of such subsidiaries, and the consequent right of the holders of the notes to participate in those assets, will be structurally subordinated to the claims of the applicable subsidiaries’ creditors. If we are declared bankrupt or insolvent, or are liquidated, the holders of our secured debt and any debt of our subsidiaries will be entitled to be paid in full from our assets before any payment may be made with respect to the notes. If any of the foregoing events occur, we cannot assure you that we will have sufficient assets to pay amounts due on any secured debt and the notes.

Your ability to transfer the notes may be limited by the absence of an active trading market, and there is no assurance that any active trading market will develop for the notes.

The notes are a new issue of securities for which there is no established public market. Although we have registered the sale of the notes under the Securities Act of 1933, we do not intend to list the notes for trading on any national securities exchange or arrange for any quotation system to quote prices for them. The underwriters have informed us that they intend to make a market in the notes, as permitted by applicable laws and regulations. However, the underwriters are not obliged to make a market in the notes, and they may discontinue their market-making activities at any time without notice. Therefore, we cannot assure you that an active market for the notes will develop or, if developed, that it will continue. In the absence of an active trading market, you may not be able to transfer the notes within the time or at the price you desire.

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USE OF PROCEEDS

We expect to receive net proceeds of approximately $346.6 million from the sale of $350 million aggregate principal amount of notes we are offering, after deducting underwriting discounts and commissions and estimated offering expenses.

We intend to use the net proceeds from this offering to repay $100 million of borrowings under our Subordinated Loan Agreement with BPHC and to fund a portion of the cost of our expansion projects, either directly, or indirectly by increasing our borrowing capacity available to fund such projects through repayment of indebtedness under our revolving credit facility. BPHC has agreed to waive the prepayment provisions of the Subordinated Loan Agreement with respect to the $100 million of borrowings that will remain outstanding under the Subordinated Loan Agreement to accommodate the use of the net proceeds of this offering for the intended purpose.

The amount outstanding under our revolving credit facility as of August 17, 2009, was $728.5 million with a weighted average interest rate of 0.5%. The outstanding borrowings under our revolving credit facility were used for interim financing of our expansion projects. Interest on amounts drawn under the revolving credit facility is payable at a floating rate equal to an applicable spread per annum over LIBOR or a base rate defined as the greater of the prime rate or the Federal funds rate plus 50 basis points. Our revolving credit facility has a maturity date of June 29, 2012. Affiliates of the underwriters participating in this offering are lenders under our revolving credit facility. Please read “Underwriting—Relationships.”

The amount outstanding under our Subordinated Loan Agreement as of August 17, 2009, was $200 million. The outstanding borrowings under our Subordinated Loan Agreement were used to finance a portion of the cost of our expansion projects. Interest on amounts drawn under the Subordinated Loan Agreement is payable at a fixed rate of 8% per annum. Please read “Description of Other Indebtedness—Subordinated Loan Agreement.”

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CAPITALIZATION

The following table shows the master partnership’s cash and cash equivalents and capitalization as of June 30, 2009 on:

• a consolidated historical basis;

• a pro forma basis to reflect the master partnership’s sale of 8,102,450 common units at $23.00 per common unit on August 14, 2009. Net proceeds from the sale, after underwriter’s discount of $0.85 per common unit and offering expenses, were approximately $179.3 million. The general partner also contributed an additional $3.8 million to maintain its 2.0% general partner interest; and

• an as adjusted basis to give effect to this offering of $350 million in aggregate principal amount of notes and the application of the net proceeds therefrom in the manner described under “Use of Proceeds.”

This table is derived from, and should be read together with, the master partnership’s historical financial statements and the accompanying notes incorporated by reference in this prospectus. You should also read this table in conjunction with “Use of Proceeds” included elsewhere in this prospectus supplement and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and “Financial Statements and Supplementary Data” appearing in the master partnership’s Annual Report on Form 10-K for the year ended December 31, 2008 and the master partnership’s Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2009, each of which is incorporated by reference in this prospectus.

	As of June 30, 2009
	Historical			Pro Forma			As Adjusted
	(in millions, unaudited)
Cash and cash equivalents (1), (2)	$	71.8		$	254.9		$	501.5
Long-term debt:
Revolving credit facility (3)		703.5			703.5			703.5
Subordinated loan (2)		200.0			200.0			100.0
Notes and debentures:
Boardwalk Pipelines:
5.20% notes due 2018		185.0			185.0			185.0
5.50% notes due 2017		300.0			300.0			300.0
5.875% notes due 2016		250.0			250.0			250.0
5.75% notes due 2019 offered hereby		—			—			350.0
Texas Gas:
7.25% debentures due 2027		100.0			100.0			100.0
4.60% notes due 2015		250.0			250.0			250.0
5.50% notes due 2013		250.0			250.0			250.0
Gulf South:
6.30% notes due 2017		275.0			275.0			275.0
5.05% notes due 2015		275.0			275.0			275.0
5.75% notes due 2012		225.0			225.0			225.0
Unamortized debt discount		(11.6	)		(11.6	)		(14.5	)
Total long-term debt	$	3,001.9		$	3,001.9		$	3,249.0
Partners’ capital:
Boardwalk Pipeline Partners, LP:
Held by public:
Common units		1,376.8			1,556.1			1,556.1
Held by the master partnership’s general partner and its affiliates:
Common units		1,176.1			1,176.1			1,176.1
Class B units		687.4			687.4			687.4
General partner interest		63.8			67.6			67.6
Accumulated other comprehensive loss		(20.4	)		(20.4	)		(20.4	)
Total partners’ capital		3,283.7			3,466.8			3,466.8
Total capitalization	$	6,285.6		$	6,468.7		$	6,715.8

(1) Net proceeds received on August 14, 2009, by the master partnership from its sale of common units are reflected in cash and cash equivalents.

(2) Assumes that the net proceeds of this offering are used to repay $100 million of borrowings under our Subordinated Loan Agreement with BPHC and the remaining proceeds are reflected in cash and cash equivalents.

(3) The amount outstanding under our revolving credit facility as of August 17, 2009, was $728.5 million with a weighted average interest rate of 0.5%.

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DESCRIPTION OF THE NOTES

We will issue the notes under a senior indenture dated as of August 21, 2009, between us, the master partnership, as guarantor, and The Bank of New York Mellon Trust Company, N.A., as trustee, as amended and supplemented by a first supplemental indenture. The first supplemental indenture will set forth certain specific terms applicable to the notes, and references to the “indenture” in this description mean the senior indenture as so amended and supplemented by the first supplemental indenture. You can find the definitions of various terms used in this description under “—Certain Definitions.” The terms of the notes include those set forth in the indenture and those made a part of the indenture by reference to the Trust Indenture Act of 1939.

This description is intended to be an overview of the material provisions of the notes and the indenture. This summary is not complete and is qualified in its entirety by reference to the indenture. You should carefully read the summary below, the description of the general terms and provisions of our debt securities set forth in the accompanying base prospectus under “Description of Debt Securities” and the provisions of the indenture that may be important to you before investing in the notes. This summary supplements, and to the extent inconsistent therewith replaces, the description of the general terms and provisions of our debt securities set forth in the accompanying base prospectus. Capitalized terms defined in the accompanying base prospectus or in the indenture have the same meanings when used in this prospectus supplement unless updated herein. In this description of the notes, all references to “we,” “us” or “our” are to Boardwalk Pipelines, LP only, and not to Boardwalk Pipeline Partners, LP or to any of Boardwalk Pipelines, LP’s subsidiaries, unless otherwise indicated. References in this description of the notes to “the master partnership” or “the guarantor” refer only to Boardwalk Pipeline Partners, LP, and not to any of its subsidiaries.

The indenture does not limit the amount of debt securities that we may issue. Debt securities may be issued under the indenture from time to time in separate series, each up to the aggregate amount from time to time authorized for such series. The notes constitute the first series of debt securities to be issued under the indenture. The notes will have negative covenants that are substantially similar to the covenants contained in the indentures governing our and our Subsidiaries’ existing notes and debentures.

General

The Notes. We will issue the notes in an aggregate principal amount of $350 million. The notes will be issued in denominations of $2,000 and integral multiples of $1,000 in excess thereof. The notes:

• will be our, but not our Subsidiaries’, general unsecured, senior obligations;

• will mature on September 15, 2019;

• will not be entitled to the benefit of any sinking fund; and

• initially will be issued only in book-entry form represented by one or more global notes registered in the name of Cede & Co., as nominee of The Depository Trust Company (“DTC”), or such other name as may be requested by an authorized representative of DTC, and deposited with the trustee as custodian for DTC.

Interest. Interest on the notes will:

• accrue at the rate of 5.75% per annum;

• accrue from August 21, 2009 or the most recent interest payment date;

• be payable in cash semi-annually in arrears on March 15 and September 15 of each year, commencing on March 15, 2010;

• be payable to holders of record on March 1 and September 1 immediately preceding the related interest payment dates;

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• be computed on the basis of a 360-day year consisting of twelve 30-day months; and

• be payable on overdue interest to the extent permitted by law at the same rate as interest is payable on principal.

If any interest payment date, stated maturity date or redemption date falls on a day that is not a business day, the payment will be made on the next business day and no interest will accrue for the period from and after such interest payment date, stated maturity date or redemption date.

Payment and Transfer. Initially, the notes will be issued only in global form. Beneficial interests in notes in global form will be shown on, and transfers of interests in notes in global form will be made only through, records maintained by DTC and its participants. Notes in definitive form, if any, may be presented for registration of transfer or exchange at the office or agency maintained by us for such purpose. Initially, this will be the corporate trust office of the trustee located at 2 North LaSalle Street, Suite 1020, Chicago, Illinois 60602.

Payment of principal of, premium, if any, and interest on notes in global form registered in the name of DTC’s nominee will be made in immediately available funds to DTC’s nominee, as the registered holder of such global notes. If any of the notes are no longer represented by a global note, payments of interest on notes in definitive form may, at our option, be made at the corporate trust office or agency of the trustee indicated above or by check mailed directly to holders at their respective registered addresses or by wire transfer to an account designated by a holder. All funds that we provide to the trustee or a paying agent for the payment of principal and any premium or interest on any note that remain unclaimed at the end of two years will (subject to applicable abandoned property laws) be repaid to us, and the holder of such note must thereafter look only to us for payment as a general creditor.

No service charge will be imposed for any registration of transfer or exchange of notes, but we or the trustee may require payment of a sum sufficient to cover any tax or other governmental charge payable upon transfer or exchange of notes. We are not required to register the transfer of or to exchange any note selected or called for redemption.

The registered holder of a note will be treated as its owner for all purposes, and all references in this description to “holders” mean holders of record, unless otherwise indicated.

Replacement of Securities. We will replace any mutilated, destroyed, lost or stolen notes at the expense of the holder upon surrender of the mutilated notes to the trustee or evidence of destruction, loss or theft of a note satisfactory to us and the trustee. In the case of a destroyed, lost or stolen note, we may require an indemnity satisfactory to the trustee and to us before a replacement note will be issued.

Additional Issuances

The indenture provides for our issuance of notes of this series with an unlimited principal amount. We may from time to time, without notice or the consent of the holders of the notes, create and issue additional notes of the series ranking equally and ratably with the notes offered hereby in all respects (except for the public offering price, issue date and the payment of interest accruing prior to the date such additional notes are initially issued under the indenture), so that such additional notes form a single series with the notes offered hereby and have the same terms as to status, redemption or otherwise as the notes offered hereby.

Guarantee of the Notes

We are a subsidiary of the master partnership. The master partnership will fully and unconditionally guarantee the due and punctual payment of the principal, any premium and interest on the notes when and as they become due and payable, whether at stated maturity or otherwise. The master partnership has also guaranteed our obligations under our revolving credit facility and our 5.875% senior notes due 2016. Its guarantee of the notes will rank equally in right of payment with its other existing and future senior unsecured indebtedness from time

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to time outstanding, including its guarantee of our obligations under our revolving credit facility and our 5.875% notes due 2016, and senior in right of payment to any future subordinated debt it may incur.

The guarantee provides that upon a default in payment of principal or any premium or interest on a note, the holder of the note may institute legal proceedings directly against the guarantor to enforce the guarantee without first proceeding against us. The guarantor is obligated under its guarantee only up to an amount that would not constitute a fraudulent conveyance or fraudulent transfer under federal or state law.

The guarantee of the master partnership may be released under certain circumstances. If no default has occurred and is continuing under the Indenture, and to the extent not otherwise prohibited by the Indenture, the master partnership will be unconditionally released and discharged from the guarantee:

• automatically upon any sale, exchange or transfer, to any person that is not our affiliate, by the master partnership of all of its direct or indirect equity interests in us; or

• automatically upon the merger of the master partnership into us or the liquidation and dissolution of the master partnership.

Optional Redemption

The notes will be redeemable, at our option, at any time in whole, or from time to time in part, at a redemption, or “make-whole,” price equal to the greater of:

• 100% of the principal amount of the notes to be redeemed; and

• the sum of the present values of the remaining scheduled payments of principal and interest on the notes to be redeemed (exclusive of interest accrued to the date of redemption) discounted to the date of redemption on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate (as defined below) plus 35 basis points;

plus, in either case, accrued interest to the date of redemption.

Notes called for redemption will become due on the date fixed for redemption. Notices of redemption will be mailed at least 30 days but not more than 60 days before the redemption date to each holder of the notes to be redeemed at its registered address. The notice of redemption for the notes will state, among other things, the amount of notes to be redeemed, if less than all of the outstanding notes are to be redeemed, the redemption date, the redemption price (or the method of calculating it) and each place that payment will be made upon presentation and surrender of notes to be redeemed. Unless we default in payment of the redemption price, interest will cease to accrue on any notes that have been called for redemption on the redemption date. If less than all the notes are redeemed at any time, the trustee will select the notes (or any portion of notes in integral multiples of $1,000) to be redeemed on a pro rata basis or by any other method the trustee deems fair and appropriate, but beneficial interests in notes in global form will be selected for redemption in accordance with DTC’s customary practices.

For purposes of determining the optional redemption price, the following definitions are applicable:

“Comparable Treasury Issue” means the U.S. Treasury security or securities selected by an Independent Investment Banker as having an actual or interpolated maturity comparable to the remaining term of the notes to be redeemed that would be utilized, at the time of selection and in accordance with customary financial practice, in pricing new issues of corporate debt securities of a comparable maturity to the remaining term of the notes to be redeemed.

“Comparable Treasury Price” means, for any redemption date, (1) the average of the bid and asked prices for the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) on the third business day preceding such redemption date, as set forth in the daily statistical release (or any successor release) published by the Federal Reserve Bank of New York and designated “Composite 3:30 p.m. Quotations for U.S. Government Securities” or (2) if such release (or any successor release) is not published or does not contain such

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prices on such business day, (A) the average of the Reference Treasury Dealer Quotations for such redemption date, after excluding the highest and lowest such Reference Treasury Dealer Quotations, or (B) if we obtain fewer than four such Reference Treasury Dealer Quotations, the average of all such quotations.

“Independent Investment Banker” means one of the Reference Treasury Dealers appointed by us.

“Reference Treasury Dealers” means each of Citigroup Global Markets Inc., J.P. Morgan Securities Inc. and a Primary Treasury Dealer (as defined below) appointed by Wells Fargo Securities, LLC, or an affiliate or successor of the foregoing, and, at our option, additional Primary Treasury Dealers (as defined below); provided, however, that if any of the foregoing shall cease to be a primary U.S. Government securities dealer in New York City (a “Primary Treasury Dealer”), we shall substitute therefor another Primary Treasury Dealer.

“Reference Treasury Dealer Quotations” means, for each Reference Treasury Dealer and any redemption date, the average, as determined by us, of the bid and asked prices for the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) quoted in writing to us by such Reference Treasury Dealer at 3:30 p.m., New York City time, on the third business day preceding such redemption date.

“Treasury Rate” means, with respect to any redemption date, the rate per annum equal to the semi-annual equivalent yield to maturity of the Comparable Treasury Issue, calculated using a price for the Comparable Treasury Issue (expressed as a percentage of its principal amount) equal to the Comparable Treasury Price for such redemption date.

Except as set forth above, the notes will not be redeemable by us prior to maturity, will not be entitled to the benefit of any sinking fund and will not be subject to repurchase by us at the option of the holders.

Sinking Fund

The notes will not be subject to a sinking fund.

Ranking

The notes will be unsecured, unless we are required to secure them as described below under “—Certain Covenants—Limitations on Liens.” The notes will also be our, but not our Subsidiaries’, unsubordinated obligations and will rank equally in contractual right of payment with all of our other existing and future unsubordinated indebtedness, including our 5.875% notes due 2016, 5.50% notes due 2017 and 5.20% notes due 2018 and our borrowings under our revolving credit facility and subordinated loan agreement.

We currently conduct substantially all our operations through our Subsidiaries, and our Subsidiaries generate substantially all our operating income and cash flow. As a result, we depend on distributions, loans or advances from our Subsidiaries for funds to meet our debt service obligations. Contractual provisions or laws, as well as our Subsidiaries’ financial condition and operating requirements, may limit our ability to obtain from our Subsidiaries cash that we require to pay our debt service obligations, including payments on the notes. The notes will be structurally subordinated to all obligations of our Subsidiaries, including trade payables, the $250.0 million aggregate principal amount of 5.50% notes due 2013, $250.0 million aggregate principal amount of 4.60% notes due 2015 and $100.0 million aggregate principal amount of 7.25% debentures due 2027 of Texas Gas, the $225.0 million aggregate principal amount of 5.75% notes due 2012, $275.0 million aggregate principal amount of 5.05% notes due 2015 and $275.0 million aggregate principal amount of 6.30% notes due 2017 of Gulf South, and Texas Gas’ and Gulf South’s borrowings under our revolving credit facility. This means that you, as a holder of the notes, will have a junior position to the claims of creditors of such Subsidiaries on their assets and earnings. The notes will also be effectively subordinated to any secured debt we may incur, to the extent of the value of the assets securing that debt. The indenture does not limit the amount of debt we or our Subsidiaries may incur. See “Risk Factors—Risks Relating to the Notes—In the event of our bankruptcy or liquidation holders of the notes will be paid from any assets remaining after payments to any holders of our secured debt and the debt of our subsidiaries.”

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As of August 17, 2009, we and our Subsidiaries had an aggregate of approximately $3.0 billion of total debt outstanding, including approximately $728.5 million of borrowings under our revolving credit facility. Approximately $1.2 billion of such debt, including our borrowings under our revolving credit facility and our subordinated loan agreement, would rank equally in right of payment with the notes, and approximately $1.8 billion of such debt, including Texas Gas’ and Gulf South’s borrowing under our revolving credit facility, as debt of our Subsidiaries, would be structurally senior to the notes.

Certain Covenants

The following is a description of certain covenants of the indenture that limit our ability and the ability of our Subsidiaries to take certain actions.

Limitations on Liens. We will not, nor will we permit any Subsidiary to, issue, assume, or guarantee any Indebtedness secured by a mortgage, pledge, lien, security interest, or encumbrance (“mortgage”) of, or upon, any of our property or any property of such Subsidiary without effectively providing that the notes shall be equally and ratably secured with such Indebtedness. However, the foregoing restriction shall not apply to:

• any purchase money mortgage created by us or a Subsidiary to secure all or part of the purchase price of any property (or to secure a loan made to enable us or a Subsidiary to acquire the property described in such mortgage), provided that the principal amount of the Indebtedness secured by any such mortgage, together with all other Indebtedness secured by a mortgage on such property, shall not exceed the purchase price of the property acquired;

• any mortgage existing on any property at the time of its acquisition by us or a Subsidiary, whether or not assumed by the Issuer or a Subsidiary, and any mortgage on any property acquired or constructed by us or a Subsidiary and created not later than 12 months after (i) completion of such acquisition or construction or (ii) commencement of full operation of such property, whichever is later; provided, however, that, if assumed or created by us or a Subsidiary, the principal amount of the Indebtedness secured by such mortgage, together with all other Indebtedness secured by a mortgage on such property, shall not exceed the purchase price of the property acquired and/or the cost of the property constructed;

• any mortgage created or assumed by us or a Subsidiary on any contract for the sale of any product or service or any rights thereunder or any proceeds therefrom, including accounts and other receivables, related to the operation or use of any property acquired or constructed by us or a Subsidiary and created not later than 12 months after (i) completion of such acquisition or construction or (ii) commencement of full operation of such property, whichever is later;

• any mortgage existing on any property of a Subsidiary at the time it becomes a Subsidiary and any mortgage on property existing at the time of acquisition thereof;

• any refunding or extension of maturity, in whole or in part, of any mortgage created or assumed in accordance with the provisions of the first through fourth bullet points above, or the fifteenth, sixteenth or twenty-fifth bullet points below, provided that the principal amount of the Indebtedness secured by such refunding mortgage or extended mortgage shall not exceed the principal amount of the Indebtedness secured by the mortgage to be refunded or extended outstanding at the time of such refunding or extension and that such refunding mortgage or extended mortgage shall be limited in lien to the same property that secured the mortgage so refunded or extended;

• any mortgage created or assumed by us or a Subsidiary to secure loans to us or a Subsidiary maturing within 12 months of the date of creation thereof and not renewable or extendable by the terms thereof at the option of us or such Subsidiary beyond such 12 months, and made in the ordinary course of business;

• mechanics’ or materialmen’s liens or any lien or charge arising by reason of pledges or deposits to secure payment of workmen’s compensation or other insurance, good faith deposits in connection with

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tenders or leases of real estate, bids or contracts (other than contracts for the payment of money), deposits to secure public or statutory obligations, deposits to secure or in lieu of surety, stay or appeal bonds and deposits as security for the payment of taxes or assessments or other similar charges;

• any mortgage arising by reason of deposits with or the giving of any form of security to any governmental agency or any body created or approved by law or governmental regulation for any purpose at any time as required by law or governmental regulation as a condition to the transaction of any business or the exercise of any privilege or license, or to enable us or a Subsidiary to maintain self-insurance or to participate in any fund for liability on any insurance risks or in connection with workmen’s compensation, unemployment insurance, old age pensions or other social security or to share in the privileges or benefits required for companies participating in such arrangements;

• mortgages upon rights-of-way;

• undetermined mortgages and charges incidental to construction or maintenance;

• the right reserved to, or vested in, any municipality or governmental or other public authority or railroad by the terms of any right, power, franchise, grant, license, permit or by any provision of law, to terminate or to require annual or other periodic payments as a condition to the continuance of such right, power, franchise, grant, license or permit;

• the lien of taxes and assessments which are not at the time delinquent;

• the lien of specified taxes and assessments which are delinquent but the validity of which is being contested in good faith at the time by us or a Subsidiary;

• the lien reserved in leases for rent and for compliance with the terms of the lease in the case of leasehold estates;

• defects and irregularities in the titles to any property (including rights-of-way and easements) which are not material to our and our Subsidiaries’ business considered as a whole;

• any mortgages securing Indebtedness neither assumed nor guaranteed by us or a Subsidiary nor on which we or such Subsidiary customarily pay interest, existing upon real estate or rights in or relating to real estate (including rights-of-way and easements) acquired by us or a Subsidiary, which mortgages do not materially impair the use of such property for the purposes for which it is held by us or such Subsidiary;

• easements, exceptions or reservations in any property of us or a Subsidiary granted or reserved for the purpose of pipelines, roads, telecommunication equipment and cable, streets, alleys, highways, railroad purposes, the removal of oil, gas, coal or other minerals or timber, and other like purposes, or for the joint or common use of real property, facilities and equipment, which do not materially impair the use of such property for the purposes for which it is held by us or such Subsidiary;

• rights reserved to or vested in any municipality or public authority to control or regulate any property of us or a Subsidiary, or to use such property in any manner which does not materially impair the use of such property for the purposes for which it is held by us or such Subsidiary;

• any obligations or duties, affecting the property of us or a Subsidiary, to any municipality or public authority with respect to any franchise, grant, license or permit;

• the liens of any judgments in an aggregate amount not in excess of $2,000,000 or the lien of any judgment the execution of which has been stayed or which has been appealed and secured, if necessary, by the filing of an appeal bond;

• zoning laws and ordinances;

• any mortgage existing on any office equipment, data processing equipment (including computer and computer peripheral equipment) or transportation equipment (including motor vehicles, aircraft and marine vessels);

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• leases now or hereafter existing and any renewals or extensions thereof;

• any lien on inventory and receivables incurred in the ordinary course of business to secure Indebtedness incurred for working capital purposes including liens incurred in connection with a sale of receivables; and

• any mortgage not permitted by the bullet points above if at the time of, and after giving effect to, the creation or assumption of any such mortgage, the aggregate amount of all mortgages not permitted by the bullet points above, together with the total consolidated Attributable Debt in respect of sale and lease-back transactions permitted by the first bullet point under “—Limitations on Sale and Lease-Back Transactions” below, does not exceed ten percent (10%) of our Consolidated Net Tangible Assets.

Limitations on Sale and Lease-Back Transactions. We will not, nor will we permit any Subsidiary to, sell and lease back for more than three years any Principal Property acquired or placed into service more than 180 days before such lease arrangement, unless:

• the lessee would be entitled to incur Indebtedness secured by a mortgage on such Principal Property in a principal amount equivalent to the Attributable Debt in respect of such arrangement without equally and ratably securing the notes; or

• we retire Funded Indebtedness or cause Funded Indebtedness to be retired, in either case in an amount equal to the amount of the net proceeds of such sale, within 90 days of the effective date of such sale and lease-back transaction.

This limitation will not apply to sale and lease-back transactions (1) relating to industrial development or pollution control financing or (2) involving only us and any Subsidiary or Subsidiaries, nor will such transactions be included in any computation of Attributable Debt.

Notwithstanding the foregoing, we and our Subsidiaries may enter into sale and lease-back transactions so long as at the time of, and after giving effect to, such transactions, the total consolidated Attributable Debt of us and our Subsidiaries in respect of such transactions, together with mortgages incurred pursuant to the last bullet point under “—Limitations on Liens” above, does not exceed ten percent (10%) of our Consolidated Net Tangible Assets.

Reports. So long as any notes are outstanding, we will be required to comply with the covenant under the caption “Description of Debt Securities—Covenants—Reports” of the accompanying base prospectus. We are also required to furnish to the trustee annually a statement as to our compliance with all covenants under the indenture.

Merger, Amalgamation, Consolidation and Sale of Assets

We will not merge, amalgamate or consolidate with or into any other Person or sell, convey, transfer, lease or otherwise dispose of all or substantially all of our assets to any Person, whether in a single transaction or series of related transactions, unless:

• we are the surviving Person in the case of a merger, or the surviving or transferee Person if other than us:

• is a partnership, limited liability company or corporation organized under the laws of the United States, a state thereof or the District of Columbia; and

• expressly assumes, by supplemental indenture satisfactory to the trustee, all of our obligations under the indenture and the debt securities issued under the indenture;

• immediately after giving effect to the transaction or series of transactions, no Default or Event of Default would occur or be continuing;

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• if we are not the surviving Person, then each Guarantor, unless it is the Person with which we have consummated a transaction under this provision, has confirmed that its guarantee of the notes will continue to apply to the obligations under the notes and the indenture; and

• we have delivered to the trustee an officers’ certificate and opinion of counsel, each stating that the merger, amalgamation, consolidation, sale, conveyance, transfer, lease or other disposition, and if a supplemental indenture is required, the supplemental indenture, comply with the conditions set forth above and any other applicable provisions of the indenture.

Thereafter, if we are not the surviving Person, the surviving or transferee Person will be substituted for us under the indenture. If we sell or otherwise dispose of (except by lease) all or substantially all of our assets and the above stated requirements are satisfied, we will be released from all of our liabilities and obligations under the indenture and the notes. If we lease all or substantially all of our assets, we will not be so released from our obligations under the indenture and the notes.

Events of Default

Events of Default. In addition to the “Events of Default” described under the caption “Description of Debt Securities—Events of Default, Remedies and Notice—Events of Default” on page 42 of the accompanying base prospectus, each of the following will be an “Event of Default” under the indenture with respect to the notes:

• a default by us, the guarantor, or any of our Subsidiaries in the payment at the stated maturity, after the expiration of any applicable grace period, of principal of, premium, if any, or interest on any Indebtedness then outstanding having a principal amount in excess of $50.0 million or acceleration of any Indebtedness having a principal amount in excess of such amount so that it becomes due and payable prior to its stated maturity; and

• the guarantee of the guarantor (i) ceases to be in full force and effect, except as specifically permitted under the Indenture, (ii) is declared null and void in a judicial proceeding or (iii) is denied or disaffirmed by the guarantor.

In the case of a Reporting Failure, the Event of Default described in the fourth bullet point under “Description of Debt Securities—Events of Default, Remedies and Notice—Events of Default” on page 42 of the accompanying base prospectus shall not be an Event of Default until such Reporting Failure has continued for 180 days.

Exercise of Remedies. If an Event of Default, other than an Event of Default described in the fifth bullet point under the caption “Description of Debt Securities—Events of Default, Remedies and Notice—Events of Default” on page 42 of the accompanying base prospectus, occurs and is continuing, the trustee or the holders of at least 25% in principal amount of the outstanding notes may declare the entire principal of, premium, if any, and accrued and unpaid interest, if any, on all the notes to be due and payable immediately. If an Event of Default described in such fifth bullet point occurs and is continuing, the principal of, premium, if any, and accrued and unpaid interest on all debt securities outstanding under the indenture, including the notes, will become immediately due and payable without any declaration of acceleration or other act on the part of the trustee or any holders.

The holders of a majority in principal amount of the outstanding notes may rescind any declaration of acceleration by the trustee or the holders, but only if:

• rescinding the declaration of acceleration would not conflict with any judgment or decree of a court of competent jurisdiction; and

• all existing Events of Default with respect to the notes have been cured or waived, other than the nonpayment of principal, premium or interest on the notes that have become due solely by the declaration of acceleration.

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The trustee will not be obligated, except as otherwise provided in the indenture, to exercise any of the rights or powers under the indenture at the request or direction of any of the holders of notes, unless such holders have offered to the trustee indemnity or security satisfactory to it against any costs, liability or expense that may be incurred in exercising such rights or powers. No holder of notes may pursue any remedy with respect to the indenture or the notes, unless:

• such holder has previously given the trustee notice that an Event of Default with respect to the notes is continuing;

• holders of at least 25% in principal amount of the outstanding notes have requested that the trustee pursue the remedy;

• such holders have offered the trustee indemnity or security satisfactory to it against any cost, liability or expense to be incurred in pursuit of the remedy;

• the trustee has not complied with such request within 60 days after the receipt of the request and the offer of indemnity or security; and

• the holders of a majority in principal amount of the outstanding notes have not given the trustee a direction that is inconsistent with such request within such 60-day period.

This provision does not, however, affect the right of a holder of a note to sue for enforcement of any overdue payment. The holders of a majority in principal amount of the notes have the right, subject to certain restrictions, to direct the time, method and place of conducting any proceeding for any remedy available to the trustee or of exercising any right or power conferred on the trustee with respect to the notes. The trustee, however, may refuse to follow any direction that:

• conflicts with law;

• is inconsistent with any provision of the indenture;

• the trustee determines is unduly prejudicial to the interests of holders of notes not taking part in such direction; or

• would involve the trustee in personal liability.

Notice of Default. Within 30 days after the occurrence of any Default or Event of Default, we are required to give written notice to the trustee and indicate the status of the Default or Event of Default and what action we are taking or propose to take to cure it, as further described under the caption “Description of Debt Securities—Events of Default, Remedies and Notice—Notice of Event of Default” on page 44 of the accompanying base prospectus.

Defeasance

At any time, we may terminate all our obligations under the indenture as they relate to the notes, which we call a “legal defeasance.” If we decide to make a legal defeasance, however, we may not terminate our obligations:

• relating to the defeasance trust;

• to register the transfer or exchange of the notes;

• to replace mutilated, destroyed, lost or stolen notes; or

• to maintain a registrar and paying agent in respect of the notes.

At any time we may also effect a “covenant defeasance,” which means we have elected to terminate our obligations under:

• some of the covenants applicable to the notes, including those described above under “—Certain Covenants—Limitations on Liens,” “—Certain Covenants—Limitations on Sale and Lease-back Transactions” and “Merger, Amalgamation, Consolidation and Sale of Assets;” and

• the cross acceleration provision described under “—Events of Default—Events of Default” above.

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We may exercise our legal defeasance option notwithstanding our prior exercise of our covenant defeasance option. If we exercise our legal defeasance option, payment of the defeased notes may not be accelerated because of an Event of Default. If we exercise our covenant defeasance option, payment of the notes may not be accelerated because of an Event of Default specified in the fourth bullet point under “Description of Debt Securities—Events of Default, Remedies and Notice—Events of Default” in the accompanying base prospectus or because of a default under either of the two bullet points under “—Events of Default—Events of Default” above.

In order to exercise either defeasance option, we must:

• irrevocably deposit in trust with the trustee money or certain U.S. government obligations for the payment of principal, premium, if any, and interest on the notes to redemption or stated maturity, as the case may be;

• comply with certain other conditions, including that no Default has occurred and is continuing after the deposit in trust; and

• deliver to the trustee an opinion of counsel to the effect that holders of the notes will not recognize income, gain or loss for United States federal income tax purposes as a result of such defeasance and will be subject to United States federal income tax on the same amounts and in the same manner and at the same times as would have been the case if such defeasance had not occurred. In the case of legal defeasance only, such opinion of counsel must be based on a ruling of the United States Internal Revenue Service or a change in applicable United States federal income tax law.

Satisfaction and Discharge

We may discharge all our obligations under the indenture with respect to the notes, other than our obligation to register the transfer of and exchange notes, provided that we either:

• deliver all outstanding notes to the trustee for cancellation; or

• all such notes not so delivered for cancellation have either become due and payable or will become due and payable at their stated maturity within one year or are scheduled for redemption within one year, and in the case of this bullet point we have deposited with the trustee in trust an amount of cash or certain U.S. government obligations sufficient to pay the entire indebtedness of such notes, including interest to the stated maturity or applicable redemption date.

Amendment and Waiver

We may amend the indenture or the holders of the notes may waive our compliance with certain covenants or past defaults under the indenture, as further described under the caption “Description of Debt Securities—Amendments and Waivers” of the accompanying base prospectus.

Book-Entry System; Depository Procedures

Initially, the notes will be represented by one or more notes in registered, global form without interest coupons (collectively, the “Global Note”). The Global Note will be deposited upon issuance with the trustee as custodian for DTC, and registered in the name of a nominee of DTC, as further described under the caption “Description of Debt Securities—Book Entry, Delivery and Form” of the accompanying base prospectus.

Regarding the Trustee

The indenture limits the right of the trustee, if it becomes our creditor, to obtain payment of claims in certain cases, or to realize for its own account on certain property received in respect of any such claim as security or otherwise. The trustee is permitted to engage in certain other transactions. However, if it acquires any conflicting interest after a Default has occurred under the indenture and is continuing, it must eliminate the conflict within 90 days, apply to the SEC for permission to continue or resign as trustee.

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If an Event of Default occurs and is not cured or waived, the trustee is required to exercise such of the rights and powers vested in it by the indenture, and use the same degree of care and skill in its exercise, as a prudent man would exercise or use under the circumstances in the conduct of his own affairs. Subject to such provisions, the trustee will be under no obligation to exercise any of its rights or powers under the indenture at the request of any of the holders of notes unless they have offered to the trustee reasonable security or indemnity against the costs and liabilities that it may incur. The Bank of New York Mellon Trust Company, N.A. serves as trustee under the indentures for all of our and our Subsidiaries’ existing notes and debentures.

Governing Law

The indenture and the notes will be governed by New York law.

Certain Definitions

“Attributable Debt” means, with respect to any sale and lease-back transaction as of any particular time, the present value discounted at a rate of interest implicit in the terms of the lease of the obligations of the lessee under such lease for net rental payments during the remaining term of the lease (including any period for which such lease has been extended or may, at the option of the lessee, be extended).

“Consolidated Funded Indebtedness” means the aggregate of all outstanding Funded Indebtedness of us and our consolidated Subsidiaries, determined on a consolidated basis in accordance with generally accepted accounting principles.

“Consolidated Net Tangible Assets” means the total assets appearing on a consolidated balance sheet of a Person and its consolidated Subsidiaries less, in general: (1) intangible assets; (2) current and accrued liabilities (other than Consolidated Funded Indebtedness and capitalized rentals or leases), deferred credits, deferred gains and deferred income; and (3) reserves.

“Default” means any event, act or condition that is, or after notice or the passage of time or both would be, an Event of Default.

“Exchange Act” means the Securities Exchange Act of 1934, as amended, and any successor statute.

“Funded Indebtedness” means any Indebtedness that matures more than one year after the date as of which Funded Indebtedness is being determined less any such Indebtedness as will be retired through or by means of any deposit or payment required to be made within one year from such date under any prepayment provision, sinking fund, purchase fund, or otherwise.

“Guarantor” means any Subsidiary or other affiliate of us, including the master partnership, that may execute the indenture, or a supplement thereto, for the purpose of providing a guarantee of debt securities pursuant to the indenture until a successor Person shall have become such pursuant to the applicable provisions of the indenture, and thereafter “Guarantor” shall mean such successor Person.

“Indebtedness” means indebtedness that is for money borrowed from others.

“Person” means any individual, corporation, partnership, joint venture, limited liability company, incorporated or unincorporated association, joint-stock company, trust, unincorporated organization or government or other agency or political subdivision thereof or other entity of any kind.

“Principal Property” means any natural gas pipeline, gathering or storage property or facility or natural gas processing plant located in the United States, except any such property that in the opinion of the board of directors of Boardwalk GP, LLC is not of material importance to the total business conducted by us and our

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consolidated Subsidiaries; provided, however, that “Principal Property” shall not include production and proceeds from production from gas processing plants or oil or natural gas or petroleum products in any pipeline or storage field.

“Reporting Failure” means the failure of us or the master partnership to file with the Trustee, within 15 days after we are or the master partnership is required to file the same with the SEC within the time periods specified in the Exchange Act or in the relevant forms thereunder (after giving effect to any grace period specified under Rule 12b-25 under the Exchange Act), the annual reports, information, documents or other reports that we are or the master partnership is required to file with the SEC pursuant to Section 13 or Section 15(d) of the Exchange Act.

“SEC” means the Securities and Exchange Commission.

“Subsidiary” of any Person means:

• any corporation, association or other business entity of which more than 50% of the total voting power of equity interests entitled, without regard to the occurrence of any contingency, to vote in the election of directors, managers, trustees, or equivalent Persons thereof is at the time of determination owned or controlled, directly or indirectly, by such Person or one or more of the other Subsidiaries of such Person or combination thereof;

• in the case of a partnership, more than 50% of the partners’ equity interests, considering all partners’ equity interests as a single class, is at the time of such determination owned or controlled, directly or indirectly, by such Person or one or more of the other Subsidiaries of such Person or combination thereof.

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CERTAIN UNITED STATES FEDERAL INCOME TAX CONSIDERATIONS

The following discussion summarizes certain United States federal income tax considerations and, in the case of non-U.S. holders (as defined below), certain estate tax considerations, that may be relevant to the acquisition, ownership and disposition of the notes by an initial beneficial owner of the notes who purchases the notes for cash at their issue price (the first price at which a substantial amount of the notes is sold for money to the public, not including bond houses, brokers or similar persons or organizations acting in the capacity of underwriters, placement agents or wholesalers) and who holds the notes as capital assets (generally property held for investment). This discussion is based upon the provisions of the Internal Revenue Code of 1986 (the “Code”), applicable Treasury Regulations promulgated and proposed thereunder, judicial authority and administrative interpretations, as of the date hereof, all of which are subject to change, possibly with retroactive effect, or are subject to different interpretations. We cannot assure you that the Internal Revenue Service (or the IRS) will not challenge one or more of the tax consequences described herein, and we have not obtained, nor do we intend to obtain, a ruling from the IRS or an opinion of counsel with respect to the United States federal tax consequences of acquiring, holding or disposing of the notes.

In this discussion, we do not purport to address all tax considerations that may be important to a particular holder in light of the holder’s circumstances, or to certain categories of holders that may be subject to special rules, such as:

• banks, insurance companies, or other financial institutions;

• holders subject to the alternative minimum tax;

• tax-exempt organizations;

• dealers in securities or currencies;

• traders in securities that elect to use a mark-to-market method of accounting for their securities holdings;

• persons that are partnerships or other pass-through entities or holders of interests therein;

• expatriates and certain former citizens or long-term residents of the United States;

• U.S. Holders (as defined below) whose functional currency is not the U.S. dollar; or

• persons who hold the notes as a position in a hedging, integrated, conversion or constructive sale transaction, a straddle or other risk reduction transaction.

This discussion also does not address any tax considerations arising under the laws of any foreign, state, local, or other jurisdiction.

If a partnership (including an entity treated as a partnership for U.S. federal income tax purposes) holds notes, the tax treatment of a partner generally will depend upon the status of the partner and the activities of the partnership. If you are a partner of a partnership holding notes, you should consult your tax advisor.

Investors considering the purchase of notes are encouraged to consult their own tax advisors regarding the application of the U.S. federal tax laws to their particular situations and the applicability and effect of state, local or foreign tax laws and tax treaties.

Tax Consequences to U.S. Holders

You are a “U.S. holder” for purposes of this discussion if you are a beneficial owner of a note and you are for U.S. federal income tax purposes:

• an individual who is a U.S. citizen or U.S. resident alien;

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• a corporation, or other entity taxable as a corporation for U.S. federal income tax purposes, that was created or organized in or under the laws of the United States, any state thereof or the District of Columbia;

• an estate whose income is subject to U.S. federal income taxation regardless of its source; or

• a trust if a court within the United States is able to exercise primary supervision over the administration of the trust and one or more United States persons have the authority to control all substantial decisions of the trust, or that has a valid election in effect under applicable U.S. Treasury Regulations to be treated as a United States person.

Interest on the Notes

Interest on a note generally will be includable in your income as ordinary income at the time the interest is received or accrued, in accordance with your regular method of accounting for United States federal income tax purposes.

In certain circumstances (see “Description of the Notes—Optional Redemption”), we may pay amounts on the notes that are in excess of the stated interest or principal of the notes. We intend to take the position that the possibility that any such payment will be made will not affect the timing or amount of interest income that you recognize unless and until any such payment is made. Our determination is binding on you unless you disclose your contrary position to the IRS in the manner that is required by applicable Treasury Regulations. Our determination is not, however, binding on the IRS. It is possible that the IRS might take a different position from that described above, in which case the timing, character and amount of taxable income in respect of the notes may be different from that described herein.

Sale, Exchange or Redemption of the Notes

You will generally recognize capital gain or loss on the sale, redemption, exchange, retirement or other taxable disposition of a note. This gain or loss will equal the difference between your adjusted tax basis in the note and the proceeds you receive, excluding any proceeds attributable to accrued interest which will be recognized as ordinary interest income to the extent you have not previously included the accrued interest in income. The proceeds you receive will include the amount of any cash and the fair market value of any other property received for the note. Your adjusted tax basis in the note will generally equal the amount you paid for the note. The gain or loss will be long-term capital gain or loss if you held the note for more than one year. Long-term capital gains of individuals, estates and trusts currently are taxed at a maximum rate of 15% (but this rate is scheduled to increase to 20% beginning January 1, 2011). The deductibility of capital losses may be subject to limitation.

Information Reporting and Backup Withholding

Information reporting will apply to payments of interest on, or the proceeds of the sale or other disposition of, notes held by you, and backup withholding may apply unless you provide the appropriate intermediary with a taxpayer identification number, certified under penalties of perjury, as well as certain other information or otherwise establish an exemption from backup withholding. Any amount withheld under the backup withholding rules is allowable as a credit against your U.S. federal income tax liability, if any, and a refund may be obtained if the amounts withheld exceed your actual U.S. federal income tax liability and you timely provide the required information or appropriate claim form to the IRS.

Tax Consequences to Non-U.S. Holders

You are a non-U.S. holder for purposes of this discussion if you are a beneficial owner of notes (other than a partnership or entity treated as a partnership for U.S. federal income tax purposes) and you are not a U.S. holder.

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Interest on the Notes

Payments to you of interest on the notes generally will be exempt from withholding of U.S. federal income tax if such interest is not effectively connected with your conduct of a trade or business in the United States, you properly certify as to your foreign status as described below, and:

• you do not own, actually or constructively, 10% or more of our or our parent’s capital or profits interests;

• you are not a “controlled foreign corporation” for United States federal income tax purposes that is related directly or indirectly to us; and

• you are not a bank receiving interest on an extension of credit made in the ordinary course of your trade or business.

The exemption from withholding and several of the special rules for non-U.S. holders described below generally apply only if you appropriately certify as to your foreign status. You can generally meet this certification requirement by providing a properly executed IRS Form W-8BEN or appropriate substitute form to us or our paying agent. If you hold the notes through a financial institution or other agent acting on your behalf, you may be required to provide appropriate certifications to the agent. Your agent will then generally be required to provide appropriate certifications to us or our paying agent, either directly or through other intermediaries. Special rules apply to foreign partnerships, estates and trusts, and in certain circumstances certifications as to foreign status of partners, trust owners or beneficiaries may have to be provided to us or our paying agent. In addition, special rules apply to qualified intermediaries that enter into withholding agreements with the IRS.

If you cannot satisfy the requirements described above, payments of interest made to you will be subject to the 30% U.S. federal withholding tax, unless you provide us with a properly executed IRS Form W-8BEN (or successor form) claiming an exemption from (or a reduction of) withholding under the benefits of an income tax treaty, or the payments of interest are effectively connected with your conduct of a trade or business in the United States and you meet the certification requirements described below. See “—Income or Gain Effectively Connected With a U.S. Trade or Business.”

Sale or Other Taxable Disposition of Notes

You generally will not be subject to U.S. federal income tax on any gain realized on the sale, redemption, exchange, retirement or other taxable disposition of a note unless:

• the gain is effectively connected with the conduct by you of a U.S. trade or business (and, if required by an applicable tax treaty, attributable to a permanent establishment in the United States); or

• you are an individual who has been present in the United States for 183 days or more in the taxable year of disposition and certain other requirements are met.

If you are a non-U.S. holder described in the first bullet point above, you generally will be subject to U.S. federal income tax in the same manner as a U.S. holder (See “—Tax Consequences to Non-U.S. Holders—Income or Gain Effectively Connected With a U.S. Trade or Business”). If you are a non-U.S. holder described in the second bullet point above, you will be subject to a flat 30% U.S. federal income tax on the gain derived from the sale or other disposition, which may be offset by U.S. source capital losses.

Income or Gain Effectively Connected With a U.S. Trade or Business

If any interest on the notes or gain from the sale, exchange or other taxable disposition of the notes is effectively connected with a U.S. trade or business conducted by you, then the income or gain generally will be subject to U.S. federal income tax at regular graduated income tax rates, but will not be subject to withholding tax if certain certification requirements are satisfied. If you are eligible for the benefits of an income tax treaty

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between the United States and your country of residence, any “effectively connected” income or gain will generally be subject to U.S. federal income tax only if it is also attributable to a permanent establishment maintained by you in the United States. If you are a corporation, that portion of your earnings and profits that is effectively connected with your U.S. trade or business (and, in the case of an applicable tax treaty, attributable to your permanent establishment in the United States) also may be subject to a “branch profits tax” at a 30% rate, although an applicable tax treaty may provide for a lower rate. You can generally meet the certification requirements by providing a properly executed IRS Form W-8ECI or appropriate substitute form to us or our paying agent.

Certain U.S. Federal Estate Tax Considerations

If you are an individual and interest on the notes is exempt from withholding under the portfolio interest exemption (without regard to the certification requirement) described above in “—Interest on the Notes,” the notes will not be included in your estate for U.S. federal estate tax purposes.

Information Reporting and Backup Withholding

Payments to you of interest on a note, and amounts withheld from such payments, if any, generally will be required to be reported to the IRS and to you.

United States backup withholding tax generally will not apply to payments of interest on a note to you if the statement described above in “—Tax Consequences to Non-U.S. Holders—Interest on the Notes” is duly provided by you or you otherwise establish an exemption, provided that we do not have actual knowledge or reason to know that you are a United States person.

Payment of the proceeds of a sale of a note effected by the U.S. office of a U.S. or foreign broker will be subject to information reporting requirements and backup withholding unless you properly certify under penalties of perjury as to your foreign status and certain other conditions are met or you otherwise establish an exemption. Information reporting requirements and backup withholding generally will not apply to any payment of the proceeds of the sale of a note effected outside the United States by a foreign office of a broker. However, unless such a broker has documentary evidence in its records that you are a non-U.S. holder and certain other conditions are met, or you otherwise establish an exemption, information reporting will apply to a payment of the proceeds of the sale of a note effected outside the United States by such a broker if it is a:

• United States person;

• foreign person that derives 50% or more of its gross income for certain periods from the conduct of a trade or business in the United States;

• controlled foreign corporation for U.S. federal income tax purposes; or

• foreign partnership that, at any time during its taxable year, has more than 50% of its income or capital interests owned by United States persons or is engaged in the conduct of a U.S. trade or business.

Any amount withheld under the backup withholding rules may be credited against your U.S. federal income tax liability and any excess may be refundable if the proper information is timely provided to the IRS.

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UNDERWRITING

Citigroup Global Markets Inc., J.P. Morgan Securities Inc. and Wells Fargo Securities, LLC are serving as the underwriters for this offering. Subject to the terms and conditions in the underwriting agreement between us and the underwriters, we have agreed to sell to each underwriter, and each underwriter has severally agreed to purchase from us, the principal amount of notes that appears opposite its name in the table below:

Underwriters	Principal Amount
Citigroup Global Markets Inc.	$	116,667,000
J.P. Morgan Securities Inc.		116,667,000
Wells Fargo Securities, LLC		116,666,000
Total	$	350,000,000

The underwriters have agreed to purchase all of the notes if any of them are purchased.

The underwriters initially propose to offer the notes to the public at the public offering price that appears on the cover page of this prospectus. The underwriters may offer the notes to selected dealers at the public offering price minus a concession of up to 0.400% of the principal amount. In addition, the underwriters may allow, and those selected dealers may reallow, a concession of up to 0.250% of the principal amount to certain other dealers. After the initial offering, the underwriters may change the public offering price and any other selling terms. The underwriters may offer and sell notes through certain of their affiliates.

The following table shows the underwriting discount to be paid by us to the underwriters in connection with this offering:

	Paid by Us
Per Note		0.650	%
Total	$	2,275,000

The expenses of the offering, not including the underwriting discount, are estimated to be $500,000 and are payable by us.

New Issue of Notes

The notes are a new issue of securities for which there is no established trading market. We do not intend to apply for listing of the notes on any national securities exchange or for quotation of the notes on any automated dealer quotation system. We have been advised by the underwriters that they presently intend to make a market in the notes after completion of the offering. However, they are under no obligation to do so and may discontinue any market-making activities at any time without any notice. We cannot assure the liquidity of the trading market for the notes or that an active public market for the notes will develop. If an active public trading market for the notes does not develop, the market price and liquidity of the notes may be adversely affected. If the notes are traded, they may trade at a discount from their initial offering price, depending on prevailing interest rates, the market for similar securities, our operating performance and financial condition, general economic conditions and other factors.

Indemnification

We have agreed to indemnify the underwriters against certain liabilities, including liabilities under the Securities Act of 1933, as amended, and to contribute to payments that the underwriters may be required to make for these liabilities.

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Stabilization

In connection with this offering of the notes, the underwriters may engage in overallotments, stabilizing transactions and syndicate covering transactions in accordance with Regulation M under the Securities Exchange Act of 1934. Overallotment involves sales in excess of the offering size, which creates a short position for the underwriters. Stabilizing transactions involve bids to purchase the notes in the open market for the purpose of pegging, fixing or maintaining the price of the notes, as applicable. Syndicate covering transactions involve purchases of the notes in the open market after the distribution has been completed in order to cover short positions. Stabilizing transactions and syndicate covering transactions may cause the price of the notes to be higher than it would otherwise be in the absence of those transactions. If any underwriter engages in stabilizing or syndicate covering transactions, it may discontinue them at any time.

Relationships

From time to time, certain underwriters and their affiliates have provided, directly or indirectly, investment and commercial banking or financial advisory services to us and our affiliates, including Loews, for which they have received customary fees and commissions, and they expect to provide these services to us and our affiliates in the future, for which they expect to receive customary fees and commissions. Citigroup Global Markets Inc. and J.P. Morgan Securities Inc. served as book-running managers of the master partnership’s August 2009 offering of 8,102,450 common units.

Affiliates of Citigroup Global Markets Inc., J.P. Morgan Securities Inc. and Wells Fargo Securities, LLC are lenders under our revolving credit facility and will receive more than 10% of the net offering proceeds through the repayment by us of amounts outstanding under our revolving credit facility with the proceeds of this offering. As a result, this offering is being conducted in compliance with FINRA Conduct Rule 5110(h).

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LEGAL MATTERS

The validity of the notes will be passed upon for us by Vinson & Elkins L.L.P., New York, New York. Certain legal matters relating to the offering of the notes will be passed upon for the underwriters by Andrews Kurth LLP.

EXPERTS

The consolidated financial statements, and the related financial statement schedule, incorporated in this prospectus supplement by reference from the Boardwalk Pipeline Partners, LP Annual Report on Form 10-K for the year ended December 31, 2008, and the effectiveness of Boardwalk Pipeline Partners, LP internal control over financial reporting have been audited by Deloitte & Touche LLP, an independent registered public accounting firm, as stated in their reports, which are incorporated herein by reference. Such financial statements and financial statement schedule have been so incorporated in reliance upon the reports of such firm given upon their authority as experts in accounting and auditing.

FORWARD-LOOKING STATEMENTS AND ASSOCIATED RISKS

Some of the information contained in or incorporated by reference in this prospectus may contain forward-looking statements. These statements can be identified by the use of forward-looking terminology including “may,” “believe,” “will,” “expect,” “anticipate,” “estimate,” “continue,” or other similar words. These statements discuss future expectations, contain projections of results of operations or of financial condition, or state other “forward-looking” information. These forward-looking statements involve risks and uncertainties. When considering these forward-looking statements, you should keep in mind the risk factors and other cautionary statements in this prospectus or incorporated by reference herein. The risk factors and other factors noted throughout this prospectus or incorporated by reference herein could cause our actual results to differ materially from those contained in any forward-looking statement. Investors are cautioned that certain statements contained in or incorporated by reference in this prospectus as well as some statements in periodic press releases and some oral statements made by our officials and our subsidiaries during presentations about us, are “forward-looking” statements.

Forward-looking statements are based on current expectations and projections about future events and are inherently subject to a variety of risks and uncertainties, many of which are beyond our control, that could cause actual results to differ materially from those anticipated or projected. These risks and uncertainties include, among others:

• A portion of the transportation capacity on each of our pipeline expansion projects that we expect will ultimately be available is contingent upon our receipt of authority to operate each of our pipeline expansion projects at higher operating pressures under a special permit issued by PHMSA. To the extent that PHMSA does not grant us authority to operate any of our pipeline expansion projects under a special permit or withdraws previously granted authority to operate under a special permit, transportation capacity made available to the market and transportation revenues received in the future would be reduced.

• The successful completion, timing, cost, scope and future financial performance of our pipeline expansion projects could differ materially from our expectations due to anomalies or defects in pipe segments, availability of contractors or equipment, ground conditions, weather, difficulties or delays in obtaining regulatory approvals or denied applications, land owner opposition, the lack of adequate materials, labor difficulties or shortages and numerous other factors beyond our control.

• We may not complete projects, including growth or expansion projects, that we have commenced or will commence, or we may complete projects on materially different terms, cost or timing than anticipated and we may not be able to achieve the intended economic or operational benefits of any such projects, if completed.

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• Global financial markets and economic conditions have been, and continue to be, experiencing extraordinary disruption and volatility following adverse changes in global capital markets. The cost of raising money in the debt and equity capital markets and commercial credit markets has increased substantially while the availability of funds from those markets has diminished significantly.

• Our FERC gas tariffs only allow us to require limited credit support in the event that our transportation customers are unable to pay for our services. If any of our significant customers have credit or financial problems which result in a delay or failure to pay for services provided by us, or contracted for with us, or repay the gas they owe us, it could adversely affect our business, financial condition and results of operations.

• The gas transmission and storage operations of our subsidiaries are subject to rate-making policies and actions by FERC or customers that could have an adverse impact on the services we offer and the rates we charge and our ability to recover the full cost of operating our pipelines, including earning a reasonable return.

• We are subject to laws and regulations relating to our rates and how we provide jurisdictional transportation services, the environment and pipeline operations which may expose us to significant costs, liabilities and loss of revenues. Any changes in such regulations or their application generally or through enforcement actions could adversely affect our business, financial condition and results of operations. In addition, any new legislation that creates new requirements, for example, greenhouse gases, or modifies long-standing regulatory policies could have a material impact on our business.

• Our operations are subject to operational hazards and unforeseen interruptions for which we may not be adequately insured.

• The cost of insuring our assets may increase dramatically.

• Because of the decline in natural gas production connected to our system, our success depends on our ability to obtain access to new sources of natural gas, which is dependent on factors beyond our control. Any decrease in supplies of natural gas in our supply areas could adversely affect our business, financial condition and results of operations.

• We may not be able to maintain or replace expiring gas transportation and storage contracts at favorable rates.

• Significant changes in natural gas prices could affect supply and demand, reducing system throughput and adversely affecting our revenues.

Developments in any of these areas could cause our results to differ materially from results that have been or may be anticipated or projected. Forward-looking statements speak only as of the date of this prospectus or, in the case of forward-looking statements contained in any document incorporated by reference, the date of such document and we expressly disclaim any obligation or undertaking to update these statements to reflect any change in our expectations or beliefs or any change in events, conditions or circumstances on which any forward-looking statement is based.

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WHERE YOU CAN FIND MORE INFORMATION

The master partnership files annual, quarterly and other reports with and furnishes other information to the Securities and Exchange Commission (the SEC). You may read and copy any document the master partnership files with or furnishes to the SEC at the SEC’s public reference room at 100 F Street, N.E., Room 1580, Washington, D.C. 20549. Please call the SEC at 1-800-732-0330 for further information on their public reference room. The master partnership’s SEC filings are also available at the SEC’s web site at http://www.sec.gov and on the master partnership’s website www.bwpmlp.com under Investor Relations. You can also obtain information about the master partnership at the offices of the New York Stock Exchange, 20 Broad Street, New York, New York 10005.

The SEC allows the master partnership to “incorporate by reference” the information the master partnership has filed with the SEC. This means that we can disclose important information to you without actually including the specific information in this prospectus by referring you to those documents. The information incorporated by reference is an important part of this prospectus. Information that the master partnership files later with the SEC (which does not include any information furnished pursuant to Item 2.02 or Item 7.01 on any Current Report on Form 8-K) will automatically update and may replace information in this prospectus and information previously filed with the SEC. As described in “Information We Incorporate by Reference” on page 2 of the accompanying base prospectus, we incorporate by reference the documents listed below:

• Annual Report on Form 10-K for the year ended December 31, 2008;

• Quarterly Reports on Form 10-Q for the periods ended March 31, 2009 and June 30, 2009;

• Current Reports on Form 8-K dated February 9, 2009, April 27, 2009, May 5, 2009, May 26, 2009, June 29, 2009, July 27, 2009 and August 12, 2009 (excluding any information furnished pursuant to Item 2.02, 7.01 and Exhibit 99.1 thereto); and

If information in incorporated documents conflicts with information in this prospectus you should rely on the most recent information. If information in an incorporated document conflicts with information in another incorporated document, you should rely on the most recent incorporated document.

You may request a copy of any document incorporated by reference in this prospectus, at no cost, by writing or calling us at the following address:

Boardwalk Pipeline Partners, LP

9 Greenway Plaza

Suite 2800

Houston, Texas 77046

(866) 913-2122

Attn: Investor Relations

IR@bwpmlp.com

You should rely only on the information incorporated by reference or provided in this prospectus supplement and the accompanying base prospectus. We have not authorized anyone else to provide you with any information. You should not assume that the information incorporated by reference or provided in this prospectus supplement or the accompanying base prospectus is accurate as of any date other than the date on the front of each document.

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PROSPECTUS

Boardwalk Pipeline Partners, LP

Common Units Representing Limited Partner Interests

Boardwalk Pipelines, LP

Debt Securities

We may from time to time offer and sell common units representing limited partner interests in Boardwalk Pipeline Partners, LP and debt securities of Boardwalk Pipelines, LP. Boardwalk Pipeline Partners, LP may guarantee the debt securities of Boardwalk Pipelines, LP. We may offer and sell these securities to or through one or more underwriters, dealers and agents, or directly to purchasers, on a continuous or delayed basis. This prospectus describes the general terms of these securities. The specific terms of any securities and the specific manner in which we will offer them will be included in a supplement to this prospectus relating to that offering.

You should read this prospectus and the applicable prospectus supplement and the documents incorporated by reference herein and therein carefully before you invest in our securities. This prospectus may not be used to consummate sales of securities unless accompanied by a prospectus supplement.

Our common units are traded on the New York Stock Exchange under the symbol “BWP.”

Investing in our securities involves a high degree of risk. Limited partnerships are inherently different from corporations. You should carefully consider each of the factors referred to under “Risk Factors” beginning on page 3 of this prospectus, contained in the applicable prospectus supplement and in the documents incorporated by reference herein and therein before you make an investment in our securities.

In order to comply with applicable Federal Energy Regulatory Commission rate-making policies, we require an owner of our units to be an Eligible Holder. Eligible Holders are individuals or entities subject to United States federal income taxation on our income or entities not subject to such taxation so long as all of the entity’s owners are subject to such taxation. If you are not an Eligible Holder, you will not be entitled to receive distributions or allocations of income or loss on your units and your units will be subject to redemption.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

THE DATE OF THIS PROSPECTUS IS MARCH 5, 2007

TABLE OF CONTENTS

	Page
ABOUT THIS PROSPECTUS	1
ABOUT BOARDWALK PIPELINE PARTNERS, LP	1
ABOUT BOARDWALK PIPELINES, LP	1
WHERE YOU CAN FIND MORE INFORMATION	1
INFORMATION WE INCORPORATE BY REFERENCE	2
RISK FACTORS	3
FORWARD-LOOKING STATEMENTS AND ASSOCIATED RISKS	3
RATIO OF EARNINGS TO FIXED CHARGES	4
USE OF PROCEEDS	5
DESCRIPTION OF THE COMMON UNITS	6
HOW WE MAKE CASH DISTRIBUTIONS	9
CONFLICTS OF INTEREST AND FIDUCIARY DUTIES	19
THE PARTNERSHIP AGREEMENT	26
DESCRIPTION OF DEBT SECURITIES	40
MATERIAL TAX CONSEQUENCES	50
LEGAL MATTERS	65
EXPERTS	65
APPENDIX A APPLICATION FOR TRANSFER OF COMMON UNITS	A-1
APPENDIX B CERTIFICATION FORM FOR NON-INDIVIDUAL INVESTORS	B-1

You should rely only on the information contained in this prospectus, any prospectus supplement and the documents we have incorporated by reference. We have not authorized anyone to provide you with different information. We are not making an offer of these securities in any state where the offer is not permitted. You should not assume that the information contained in this prospectus or any prospectus supplement, as well as the information we previously filed with the Securities and Exchange Commission that is incorporated by reference herein, is accurate as of any date other than its respective date.

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ABOUT THIS PROSPECTUS

This prospectus is part of a registration statement that we have filed with the Securities and Exchange Commission (or SEC) using a “shelf” registration process. Under this shelf registration process, we may sell the securities described in this prospectus in one or more offerings. This prospectus provides you with a general description of the securities we may offer. Each time we sell securities with this prospectus, we will provide a prospectus supplement that will contain specific information about the terms of that offering. The prospectus supplement may also add to, update or change information in this prospectus.

Unless the context clearly indicates otherwise, references in this prospectus to “Boardwalk Pipeline Partners, LP,” “we,” “our,” “us” or similar terms, when used in the present tense or for historical periods since November 15, 2005 refer to Boardwalk Pipeline Partners, LP and, unless the context indicates otherwise, its subsidiaries. References to “Boardwalk Pipelines,” “we,” “our,” “us” or like terms for historical periods prior to November 15, 2005 refer to Boardwalk Pipelines, LLC and its subsidiaries, which were contributed to us at the closing of our initial public offering on November 15, 2005. References in this prospectus to our “general partner” refer to Boardwalk GP, LP and/or Boardwalk GP, LLC, the general partner of Boardwalk GP, LP, as appropriate. References to “Loews” refer to Loews Corporation, the ultimate parent company of our general partner.

The information in this prospectus is accurate as of its date. Therefore, before you invest in our securities, you should carefully read this prospectus and any prospectus supplement relating to the securities offered to you together with the additional information described under the heading “Where You Can Find More Information.”

ABOUT BOARDWALK PIPELINE PARTNERS, LP

We are a limited partnership engaged in the interstate transportation and storage of natural gas.

Our principal executive offices are located at 3800 Frederica Street, Owensboro, Kentucky, 42301, and our phone number is (270) 926-8686. Our website is located at http://www.boardwalkpipelines.com. We make our periodic reports and other information filed with or furnished to the Securities and Exchange Commission (or the SEC) available, free of charge, through our website, as soon as reasonably practicable. Information on our website or any other website, is not incorporated by reference into this prospectus and does not constitute a part of this prospectus unless specifically so designated and filed with the SEC.

ABOUT BOARDWALK PIPELINES, LP

Boardwalk Pipelines, LP is our wholly owned subsidiary. We have no operations other than through Boardwalk Pipelines.

WHERE YOU CAN FIND MORE INFORMATION

We file annual, quarterly and other reports and other information with the SEC. You may read and copy any document we file at the SEC’s public reference room at 100 F Street, NE, Room 1580 Washington, D.C. 20549. Please call the SEC at 1-800-732-0330 for further information on their public reference room. Our SEC filings are also available at the SEC’s web site at http://www.sec.gov. You can also obtain information about us at the offices of the New York Stock Exchange, 20 Broad Street, New York, New York 10005, or on our website at www.boardwalkpipelines.com. Information on our website or any other website, is not incorporated by reference into this prospectus and does not constitute a part of this prospectus unless specifically so designated and filed with the SEC.

INFORMATION WE INCORPORATE BY REFERENCE

The SEC allows us to “incorporate by reference” the information we have filed with the SEC. This means that we can disclose important information to you without actually including the specific information in this prospectus by referring you to those documents. The information incorporated by reference is an important part of this prospectus. Information that we file later with the SEC will automatically update and may replace information in this prospectus and information previously filed with the SEC.

The documents listed below and any future filings made with the SEC under Sections 13(a), 13(c), 14 or 15(d) of the Securities Exchange Act of 1934 (excluding those furnished to the SEC on Form 8-K) are incorporated by reference in this prospectus.

• Annual Report on Form 10-K for the fiscal year ended December 31, 2006.

• Current Report on Form 8-K filed February 12, 2007 (excluding information furnished pursuant to Item 7.01 and 9.01 and Exhibit 99.1 thereto).

• The description of our common units contained in the Registration Statement on Form 8-A, filed November 4, 2005.

You may request a copy of any document incorporated by reference in this prospectus, at no cost, by writing or calling us at the following address:

Boardwalk Pipeline Partners, L.P.

Attn: Investor Relations

3800 Frederica Street

Owensboro, Kentucky 42301

(270) 926-8686

You should rely only on the information contained in or incorporated by reference in this prospectus or any prospectus supplement. We have not authorized anyone else to provide you with any information. We are not making an offer of these securities in any state where the offer is not permitted. You should not assume that the information incorporated by reference or provided in this prospectus or any prospectus supplement is accurate as of any date other than its respective date.

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RISK FACTORS

An investment in the securities involves a significant degree of risk. Before you invest in our securities you should carefully consider those risk factors included in our most recent Annual Report on Form 10-K, as supplemented by our Quarterly Reports on Form 10-Q, each of which is incorporated herein by reference and those risk factors that may be included in the applicable prospectus supplement together with all of the other information included in this prospectus, any prospectus supplement and the documents we incorporate by reference in evaluating an investment in our securities.

If any of the risks discussed in the foregoing documents were to occur, our business, financial condition, results of operations and cash flows could be materially adversely affected. In that case, we may be unable to pay distributions to our unitholders, or pay interest on, or the principal of, any debt securities. In that event, the trading price of our securities could decline and you could lose all or part of your investment.

FORWARD-LOOKING STATEMENTS AND ASSOCIATED RISKS

Some of the information contained in or incorporated by reference in this prospectus may contain forward-looking statements. These statements can be identified by the use of forward-looking terminology including “may,” “believe,” “will,” “expect,” “anticipate,” “estimate,” “continue,” or other similar words. These statements discuss future expectations, contain projections of results of operations or of financial condition, or state other “forward-looking” information. These forward-looking statements involve risks and uncertainties. When considering these forward-looking statements, you should keep in mind the risk factors and other cautionary statements in this prospectus or incorporated by reference herein, including those described in the “Risk Factors” section of our most recent annual report on Form 10-K and, to the extent applicable, our quarterly reports on Form 10-Q and any prospectus supplement. The risk factors and other factors noted in this prospectus or incorporated by reference herein could cause our actual results to differ materially from those contained in any forward-looking statement. Investors are cautioned that certain statements contained in or incorporated by reference in this prospectus as well as some statements in periodic press releases and some oral statements made by our officials and our subsidiaries during presentations about us, are “forward-looking” statements. Forward-looking statements are based on current expectations and projections about future events and are inherently subject to a variety of risks and uncertainties, many of which are beyond our control, that could cause actual results to differ materially from those anticipated or projected.

Forward-looking statements speak only as of the date of this prospectus or, in the case of forward-looking statements contained in any document incorporated by reference, the date of such document and we expressly disclaim any obligation or undertaking to update these statements to reflect any change in our expectations or beliefs or any change in events, conditions or circumstances on which any forward-looking statement is based.

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RATIO OF EARNINGS TO FIXED CHARGES

The following table sets forth our ratio of consolidated earnings to fixed charges for the periods presented:

	Texas Gas Transmission, LLC(1)		Boardwalk Pipeline Partners(2)
	Year Ended December 31, 2002	Period from Jan. 1, 2003 - May 16, 2003	Period from May 17, 2003 - Dec. 31, 2003	Year Ended December 31,
				2004	2005	2006
Ratio of earnings to fixed charges	5.27	8.33	2.92	3.66	3.58	3.97

(1) Texas Gas Transmission, LLC, our wholly owned subsidiary which we acquired on May 16, 2003, is our predecessor. This acquisition was accounted for using the purchase method of accounting and, accordingly, the post-acquisition financial data reflects the allocation of the purchase price resulting from the acquisition. As a result, the financial statements of Texas Gas for the periods prior to May 16, 2003 are not directly comparable to our financial statements subsequent to that date. The ratio of consolidated earnings to fixed charges have been separated by a bold black line separating our predecessor’s financial data from ours.

(2) Our acquisition of Gulf South Pipeline Company, LP in December 2004 was accounted for using the purchase method of accounting. Accordingly, the post-acquisition financial data reflects the purchase. As a result, our financial statements for the periods prior to 2005 are not directly comparable to our financial statements subsequent to that date.

For purposes of calculating the ratio of consolidated earnings to fixed charges:

• “earnings” is the aggregate of the following items: pre-tax income or loss from continuing operations before income or loss from equity investees; plus fixed charges; plus distributed income of equity investees; less our share of pre-tax losses of equity investees for which charges arising from guarantees are included in fixed charges; and less capitalized interest; and

• “fixed charges” means the sum of the following: interest expensed and capitalized; amortized premiums, discounts and capitalized expenses related to indebtedness; an estimate of the interest within rental expense; and our share of interest expense from equity investees where the related pre-tax loss has been included in earnings.

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USE OF PROCEEDS

Except as otherwise provided in the applicable prospectus supplement, we will use the net proceeds we receive from the sale of the securities covered by this prospectus for general partnership purposes, including repayment of debt, acquisitions and capital expenditures and additions to working capital.

The actual application of proceeds we receive from the sale of any particular offering of securities using this prospectus will be described in the applicable prospectus supplement relating to such offering.

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DESCRIPTION OF THE COMMON UNITS

General

The common units represent limited partner interests in us. The holders are entitled to participate in partnership distributions and are entitled to exercise the rights and privileges available to limited partners under our partnership agreement. For a description of the relative rights and preferences of holders of common units and subordinated units in and to partnership distributions, please read this section and “How We Make Cash Distributions.” For a description of the rights and privileges of limited partners under our partnership agreement, including voting rights, please read “The Partnership Agreement.”

Our common units are listed on the New York Stock Exchange, or NYSE, under the symbol “BWP.”

Restrictions on Ownership of Common Units

In order to comply with certain Federal Energy Regulatory Commission, or FERC, rate-making policies applicable to entities like us that pass their taxable income through to their owners, we have adopted requirements regarding who can be our owners. Our partnership agreement requires that a transferee of common units, including the underwriters and those who purchase common units from the underwriters, properly complete and deliver to us a transfer application containing a certification as to a number of matters, including the status of the transferee, or all its owners, as being subject to United States federal income taxation on the income generated by us. In addition, our general partner may require any owner of our units to recertify its status as being subject to United States federal income taxation on the income generated by us. The form or forms used for any such recertification will be specified by our general partner and may be changed in any manner our general partner determines necessary or appropriate. If a transferee or other unitholder does not properly complete the transfer application or recertification, for any reason, the transferee or other unitholder will have no right to receive any distributions or allocations of income or loss on its common units or to vote its units on any matter and we have the right to redeem such units at a price equal to the lower of the transferee’s purchase price or the then-current market price of such units, calculated in accordance with a formula specified in our partnership agreement. The redemption price will be paid in cash or by delivery of a promissory note, as determined by our general partner. See “—Transfer of Common Units” and “The Partnership Agreement—Non-Taxpaying Assignees; Redemption.”

Transfer Agent and Registrar

Duties

American Stock Transfer and Trust Company serves as transfer agent and registrar for the common units. We pay all fees charged by the transfer agent for transfers of common units, except the following that must be paid by unitholders:

• surety bond premiums to replace lost or stolen certificates, or to cover taxes and other governmental charges in connection therewith;

• special charges for services requested by a holder of a common unit; and

• other similar fees or charges.

There is no charge to unitholders for disbursements of our cash distributions. We will indemnify the transfer agent, its agents and each of their respective stockholders, directors, officers and employees against all claims and losses that may arise out of acts performed or omitted for its activities in that capacity, except for any liability due to any gross negligence or intentional misconduct of the indemnified person or entity.

Resignation or Removal

The transfer agent may resign, by notice to us, or be removed by us. The resignation or removal of the transfer agent will become effective upon our appointment of a successor transfer agent and registrar and its

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acceptance of the appointment. If no successor has been appointed and has accepted the appointment within 30 days after notice of the resignation or removal, our general partner may act as the transfer agent and registrar until a successor is appointed.

Transfer of Common Units

The transfer of the common units to persons that purchase directly from the underwriters or directly from us will be accomplished through the proper completion, execution and delivery of a transfer application by the investor. Any later transfers of a common unit will not be recorded by the transfer agent or recognized by us unless the transferee executes and delivers a properly completed transfer application. By executing and delivering a transfer application, the transferee of common units:

• becomes the record holder of the common units and is an assignee until admitted into our partnership as a substituted limited partner;

• automatically requests admission as a substituted limited partner in our partnership;

• executes and agrees to be bound by the terms and conditions of our partnership agreement;

• represents that the transferee has the capacity, power and authority to enter into our partnership agreement;

• grants powers of attorney to the officers of our general partner and any liquidator of us as specified in our partnership agreement;

• gives the consents, covenants, representations and approvals contained in our partnership agreement, such as the approval of all transactions and agreements we entered into in connection with our initial public offering; and

• certifies:

• that the transferee is an individual or is an entity subject to United States federal income taxation on the income generated by us; or

• that, if the transferee is an entity not subject to United States federal income taxation on the income generated by us, as in the case, for example, of a mutual fund taxed as a regulated investment company or a partnership, all the entity’s owners are subject to United States federal income taxation on the income generated by us.

An assignee will become a substituted limited partner of our partnership for the transferred common units automatically upon the recording of the transfer on our books and records. Our general partner will cause any unrecorded transfers for which a properly completed and duly executed transfer application has been received to be recorded on our books and records no less frequently than quarterly.

A transferee’s broker, agent or nominee may, but is not obligated to, complete, execute and deliver a transfer application. We are entitled to treat the nominee holder of a common unit as the absolute owner. In that case, the beneficial holder’s rights are limited solely to those that it has against the nominee holder as a result of any agreement between the beneficial owner and the nominee holder.

Common units are securities and are transferable according to the laws governing transfer of securities. In addition to other rights acquired upon transfer, the transferor gives the transferee the right to request admission as a substituted limited partner in our partnership for the transferred common units. A purchaser or transferee of common units who does not execute and deliver a properly completed transfer application obtains only:

• the right to assign the common unit to a purchaser or other transferee; and

• the right to transfer the right to seek admission as a substituted limited partner in our partnership for the transferred common units.

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Thus, a purchaser or transferee of common units who does not execute and deliver a properly completed transfer application:

• will not receive cash distributions;

• will not be allocated any of our income, gain, deduction, losses or credits for federal income tax or other tax purposes;

• may not receive some federal income tax information or reports furnished to record holders of common units; and

• will have no voting rights;

unless the common units are held in a nominee or “street name” account and the nominee or broker has executed and delivered a transfer application and certification as to itself and any beneficial holders.

The transferor of common units has a duty to provide the transferee with all information that may be necessary to transfer the common units. The transferor does not have a duty to ensure the execution of the transfer application by the transferee and has no liability or responsibility if the transferee neglects or chooses not to execute and deliver a properly completed transfer application to the transfer agent. Please read The Partnership Agreement—Status as Limited Partner or Assignee.”

Until a common unit has been transferred on our books, we and the transfer agent may treat the record holder of the unit as the absolute owner for all purposes, except as otherwise required by law or stock exchange regulations.

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HOW WE MAKE CASH DISTRIBUTIONS

General

Rationale for Our Cash Distribution Policy

Our cash distribution policy reflects a basic judgment that our unitholders will be better served by our distributing our available cash surplus rather than our retaining it. Our available cash includes cash generated from the operation of our assets and business as described elsewhere in this prospectus and in the documents incorporated by reference herein. Our cash distribution policy is consistent with the terms of our partnership agreement which require us to distribute available cash to unitholders on a quarterly basis.

Limitations on Our Ability to Make Quarterly Distributions

There is no guarantee that unitholders will receive quarterly distributions from us. Our distribution policy may be changed at any time and is subject to certain restrictions, including:

• Other than the obligation under our partnership agreement to distribute available cash on a quarterly basis, which is subject to our general partner’s broad discretion to establish reserves and other limitations, our unitholders have no contractual or other legal right to receive distributions.

• Our general partner has broad discretion to establish reserves for the proper conduct of our business and the establishment of those reserves could result in a reduction of our distributions.

• Our pipeline subsidiaries are regulated by FERC which places restrictions on various types of cash management programs employed by companies in the energy industry, including our regulated subsidiaries. FERC may preclude or limit natural gas companies from participating in such cash management programs unless the parent company and its FERC-regulated affiliates maintain investment-grade credit ratings. If we and our FERC regulated pipelines do not maintain an investment grade credit rating then our regulated subsidiaries could be precluded from making cash distributions to us, which would have an adverse effect on our ability to make distributions to you.

• Our credit agreement requires us, generally, to maintain a ratio of total indebtedness to Consolidated EBITDA (as defined in our credit agreement) of no more than 5.00 to 1.00 and a ratio of Consolidated EBITDA to cash interest expense of not less than 3.00 to 1.00. In addition, a default by us on the payment of any indebtedness in excess of $25 million constitutes an event of default under our credit agreement and we would be prohibited from making distributions. Should we be unable to satisfy these restrictions or another default or event of default occurs and is continuing under our credit agreement, we would be prohibited from making a distribution to you notwithstanding our stated distribution policy.

• Even if our cash distribution policy is not modified, the amount of distributions we pay and the decision to make any distribution is determined by our general partner, taking into consideration the terms of our partnership agreement.

• Under Section 17-607 of the Delaware Revised Uniform Limited Partnership Act (or the Delaware Act), we may not make a distribution to you if the distribution would cause our liabilities to exceed the fair value of our assets.

• We may lack sufficient cash to pay distributions to our unitholders due to a number of factors that would adversely affect us. See “Risk Factors” for information regarding the factors.

• Although our partnership agreement requires us to distribute our available cash, our partnership agreement may be amended. Although during the subordination period, with certain exceptions, our partnership agreement may not be amended without the approval of nonaffiliated common unitholders, our partnership agreement can be amended with the approval of a majority of the outstanding common units after the subordination period has ended.

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Our ability to make distributions to our unitholders depends on the performance of our subsidiaries and their ability to distribute funds to us. The ability of our subsidiaries to make distributions to us may be restricted by, among other things, the provisions of existing and future indebtedness, applicable state partnership and limited liability company laws and other laws and regulations, including the effect of FERC policies on our regulated pipelines.

Our Cash Distribution Policy May Limit Our Ability to Grow

Because we intend to distribute the majority of the cash generated from our business to our unitholders, we will in large part rely upon external financing sources, including borrowings and issuances of debt and equity securities, to fund our acquisition and capital improvement expenditures. If we are unable to finance growth externally, our cash distribution policy could significantly impair our ability to grow.

Operating Surplus and Capital Surplus

Overview

All cash distributed to unitholders is characterized as either “operating surplus” or “capital surplus.” We treat distributions of available cash from operating surplus differently than distributions of available cash from capital surplus.

Definition of Available Cash

Available cash generally means, for each fiscal quarter, all cash on hand at the end of the quarter:

• less the amount of cash reserves established by our general partner to:

• provide for the proper conduct of our business;

• comply with applicable law, any of our debt instruments, or other agreements; and

• provide funds for distributions to our unitholders and to our general partner for any one or more of the next four quarters;

• plus all cash on hand on the date of determination of available cash for the quarter resulting from working capital borrowings made after the end of the quarter for which the determination is being made. Working capital borrowings are generally borrowings that are made under our credit facility and in all cases are used solely for working capital purposes or to pay distributions to partners.

General Partner Interest and Incentive Distribution Rights

Our general partner holds a general partner interest that entitles it to 2% of all quarterly distributions that we make prior to our liquidation. This general partner interest is represented by general partner unit equivalents. Our general partner has the right, but not the obligation, to contribute a proportionate amount of capital to us to maintain its current general partner interest. The general partner’s 2% interest in our distributions may be reduced if we issue additional units in the future and our general partner does not contribute a proportionate amount of capital to us to maintain its 2% general partner interest.

Our general partner also currently holds incentive distribution rights that entitle it to receive increasing percentages, up to a maximum of 50%, of the cash we distribute from operating surplus (as defined below) in excess of $0.4025 per unit. The maximum distribution of 50% includes distributions paid to our general partner on its 2% general partner interest, and assumes that our general partner maintains its general partner interest at 2%. The maximum distribution of 50% does not include any distributions that our general partner may receive on Common or Subordinated Units that it owns. Please read “—Incentive Distribution Rights” for additional information.

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Definition of Operating Surplus

Operating surplus for any period generally means:

• our cash balance on the closing date of our initial public offering, which was approximately $33 million; plus

• $75 million; plus

• all of our cash receipts after the closing of our initial public offering, excluding cash from (i) borrowings that are not working capital borrowings, (ii) sales of equity and debt securities and (iii) sales or other dispositions of assets outside the ordinary course of business; plus

• interest (after giving effect to our interest rate swap agreements) paid on debt incurred by us, and cash distributions paid on the equity securities issued by us, to finance all or any portion of the construction, expansion or improvement of our facilities during the period from such financing until the earlier to occur of the date the capital asset is put into service or the date it is abandoned or disposed of; plus

• interest (after giving effect to our interest rate swap agreements) paid on debt incurred by us, and cash distributions paid on the equity securities issued by us, in each case, to pay the construction period interest on debt incurred, or to pay construction period distributions on equity issued, to finance the construction projects referred to above; plus

• working capital borrowings made after the end of a quarter but before the date of determination of operating surplus for the quarter; less

• all of our operating expenditures (as defined below) after the closing of our initial public offering; less

• the amount of cash reserves established by our general partner to provide funds for future operating expenditures.

If a working capital borrowing, which increases operating surplus, is not repaid during the twelve-month period following the borrowing, it will be deemed repaid at the end of such period, thus decreasing operating surplus at such time. When such working capital is in fact repaid, it will not be treated as a reduction in operating surplus because operating surplus will have been previously reduced by the deemed repayment.

As described above, operating surplus does not reflect actual cash on hand that is available for distribution to our unitholders. For example, it includes a provision that enables us, if we choose, to distribute as operating surplus up to $75 million of cash we receive from non-operating sources such as asset sales, issuances of securities and long-term borrowings that would otherwise be distributed as capital surplus.

Operating expenditures generally means all of our expenditures, including, but not limited to, taxes, reimbursements of expenses to our general partner, repayment of working capital borrowings, debt service payments and capital expenditures, provided that operating expenditures do not include:

• payments (including prepayments) of principal of and premium on indebtedness, other than working capital borrowings;

• capital improvement expenditures;

• payment of transaction expenses relating to interim capital transactions; or

• distributions to partners.

Where capital expenditures are made in part for acquisitions or for capital improvements and in part for other purposes, our general partner, with the concurrence of the conflicts committee, shall determine the allocation between the amounts paid for each.

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Maintenance capital expenditures reduce operating surplus, from which we pay the minimum quarterly distribution, but capital expenditures for acquisitions and capital improvements do not. Maintenance capital expenditures represent capital expenditures to replace partially or fully depreciated assets to maintain the operating capacity of or sales generated by existing assets and extend their useful lives. Maintenance capital expenditures include expenditures required to maintain equipment reliability, storage and pipeline integrity and safety and to address environmental regulations. Capital improvement expenditures include expenditures to acquire assets to grow our business and to expand existing pipeline delivery capacity, such as projects that increase operating capacity by increasing volume throughput or storage capacity or increase cash flow. Repair and maintenance expenses associated with existing assets that are minor in nature and do not extend the useful life of existing assets are charged to operating expenses as incurred. The officers and directors of our general partner determine how to allocate a capital expenditure for the acquisition or expansion of our assets between maintenance capital expenditures and capital improvement expenditures.

Definition of Capital Surplus

We also define capital surplus below, and it is generally generated only by:

• borrowings other than working capital borrowings;

• sales of debt and equity securities; and

• sales or other disposition of assets for cash, other than inventory, accounts receivable and other current assets sold in the ordinary course of business or as part of normal retirements or replacements of assets.

Characterization of Cash Distributions

We treat all available cash distributed as coming from operating surplus until the sum of all available cash distributed since our initial public offering equals the operating surplus as of the most recent date of determination of available cash. We treat any amount distributed in excess of operating surplus, regardless of its source, as capital surplus. As reflected above, operating surplus includes $75 million in addition to our cash balance on the closing date of our initial public offering, cash receipts from our operations and cash from working capital borrowings. This amount does not reflect actual cash on hand at closing of our initial public offering that is available for distribution to our unitholders. Rather, it is a provision that enables us, if we choose, to distribute as operating surplus up to $75 million of cash we receive following the date of our initial public offering from non-operating sources, such as asset sales, issuances of securities, and long-term borrowings, that would otherwise be distributed as capital surplus. We do not anticipate that we will make any distributions from capital surplus.

Subordination Period

General

During the subordination period, which we define below, the common units have the right to receive distributions of available cash from operating surplus in an amount equal to the minimum quarterly distribution of $0.35 per quarter, plus any arrearages in the payment of the minimum quarterly distribution on the common units from prior quarters, before any distributions of available cash from operating surplus may be made on the subordinated units. Loews owns all the 33,093,878 outstanding subordinated units. These units are deemed “subordinated” because for a period of time, referred to as the subordination period, the subordinated units are not entitled to receive any distributions until the common units have received the minimum quarterly distribution plus any arrearages from prior quarters. Furthermore, no arrearages will accrue on or be paid on the subordinated units. The purpose of the subordination period is to increase the likelihood that during this period there will be sufficient available cash to pay the minimum quarterly distribution on the common units.

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Definition of Subordination Period

The subordination period will end and each subordinated unit will convert into a common unit on the second day after each of the following tests are met:

• distributions of available cash from operating surplus on each of the outstanding common and subordinated units equaled or exceeded the minimum quarterly distribution for each of the three consecutive, non-overlapping four-quarter periods immediately preceding that date;

• the “adjusted operating surplus” (as defined below) generated during each of the three consecutive, non-overlapping four-quarter periods immediately preceding that date equaled or exceeded the sum of the minimum quarterly distributions on all of the outstanding common and subordinated units during those periods on a fully diluted basis and on the related general partner interest during those periods; and

• there are no arrearages in payment of the minimum quarterly distribution on the common units.

Alternatively, the subordination period will end and each subordinated unit will convert into a common unit, even if the tests above have not been met, on the second day after the following tests are met:

• distributions of available cash from operating surplus on each of the outstanding common and subordinated units equaled or exceeded $0.5250 per quarter (150% of the minimum quarterly distribution) for the four-quarter period immediately preceding that date;

• the “adjusted operating surplus” (as defined below) generated during the four-quarter period immediately preceding that date equaled or exceeded the sum of $0.5250 (150% of the minimum quarterly distribution) on all of the outstanding common and subordinated units during that period on a fully diluted basis and on the related general partner interest during that period; and

• there are no arrearages in payment of the minimum quarterly distribution on the common units.

Further, if the unitholders remove our general partner other than for cause and no units held by our general partner and its affiliates are voted in favor of such removal:

• the subordination period will end and each subordinated unit will immediately convert into one common unit;

• any existing arrearages in payment of the minimum quarterly distribution on the common units will be extinguished; and

• our general partner will have the right to convert its general partner interest and its incentive distribution rights into common units or to receive cash in exchange for those interests.

Definition of Adjusted Operating Surplus

Adjusted operating surplus for any period generally means:

• operating surplus generated with respect to that period; less

• any net increase in working capital borrowings with respect to that period; less

• any net reduction in cash reserves for operating expenditures with respect to that period not relating to an operating expenditure made with respect to that period; plus

• any net decrease in working capital borrowings with respect to that period; plus

• any net increase in cash reserves for operating expenditures with respect to that period required by any debt instrument for the repayment of principal, interest or premium.

Adjusted operating surplus is intended to reflect the cash generated from operations during a particular period and therefore excludes net increases in working capital borrowings and net drawdowns of reserves of cash generated in prior periods.

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Effect of Expiration of the Subordination Period

Upon expiration of the subordination period, each outstanding subordinated unit will convert into one common unit and will then participate pro rata with the other common units in distributions of available cash.

Distributions of Available Cash from Operating Surplus During the Subordination Period

We will make distributions of available cash from operating surplus for any quarter during the subordination period in the following manner:

• First, 98% to the common unitholders, pro rata, and 2% to our general partner, until we distribute for each outstanding common unit an amount equal to the minimum quarterly distribution for that quarter;

• Second, 98% to the common unitholders, pro rata, and 2% to our general partner, until we distribute for each outstanding common unit an amount equal to any arrearages in payment of the minimum quarterly distribution on the common units for any prior quarters during the subordination period;

• Third, 98% to the subordinated unitholders, pro rata, and 2% to our general partner, until we distribute for each subordinated unit an amount equal to the minimum quarterly distribution for that quarter; and

• Thereafter, in the manner described in “—Incentive Distribution Rights” below.

The preceding discussion is based on the assumptions that our general partner maintains its 2% general partner interest and that we do not issue additional classes of equity securities.

Distributions of Available Cash from Operating Surplus After the Subordination Period

We will make distributions of available cash from operating surplus for any quarter after the subordination period in the following manner:

• First, 98% to all unitholders, pro rata, and 2% to our general partner, until we distribute for each outstanding unit an amount equal to the minimum quarterly distribution for that quarter; and

• Thereafter, in the manner described in “—Incentive Distribution Rights” below.

The preceding discussion is based on the assumptions that our general partner maintains its 2% general partner interest and that we do not issue additional classes of equity securities.

Incentive Distribution Rights

Incentive distribution rights represent the right to receive an increasing percentage of quarterly distributions of available cash from operating surplus after the minimum quarterly distribution and the target distribution levels have been achieved. Our general partner currently holds the incentive distribution rights, but may transfer these rights separately from its general partner interest, subject to restrictions in our partnership agreement.

If for any quarter:

• we have distributed available cash from operating surplus to the unitholders in an amount equal to the minimum quarterly distribution; and

• we have distributed available cash from operating surplus on outstanding common units and the general partner interest in an amount necessary to eliminate any cumulative arrearages in payment of the minimum quarterly distribution to the common units;

then, we will distribute any additional available cash from operating surplus for that quarter among the unitholders and our general partner in the following manner:

• First, 98% to all unitholders, pro rata, and 2% to our general partner, until each unitholder receives a total of $0.4025 per unit for that quarter (the “first target distribution”);

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• Second, 85% to all unitholders, pro rata, and 15% to our general partner, until each unitholder receives a total of $0.4375 per unit for that quarter (the “second target distribution”);

• Third, 75% to all unitholders, pro rata, and 25% to our general partner, until each unitholder receives a total of $0.5250 per unit for that quarter (the “third target distribution”); and

• Thereafter, 50% to all unitholders, pro rata, and 50% to our general partner.

In each case, the amount of the target distribution set forth above is exclusive of any distributions to common unitholders to eliminate any cumulative arrearages in payment of the minimum quarterly distribution to the common unitholders. The preceding discussion is based on the assumptions that our general partner maintains its 2% general partner interest and has not transferred its incentive distribution rights and that we do not issue additional classes of equity securities.

Percentage Allocations of Available Cash from Operating Surplus

The following table illustrates the percentage allocations of available cash from operating surplus between the unitholders and our general partner up to and above the various target distribution levels. The amounts set forth under “Marginal Percentage Interest in Distributions” are the percentage interests of our general partner and the unitholders in any available cash from operating surplus we distribute up to and including the corresponding amount in the column “Total Quarterly Distribution,” until available cash from operating surplus we distribute reaches the next target distribution level, if any. The percentage interests shown for the unitholders and our general partner for the minimum quarterly distribution are also applicable to quarterly distribution amounts that are less than the minimum quarterly distribution. The percentage interests set forth below for our general partner include its 2% general partner interest and assume our general partner maintains its 2% general partner interest and has not transferred its incentive distribution rights.

	Total Quarterly Distribution	Marginal Percentage Interest in Distributions
	Target Amount	Common and Subordinated Unitholders		General Partner
Minimum Quarterly Distribution	$0.3500	98	%	2	%
First Target Distribution	up to $0.4025	98	%	2	%
Second Target Distribution	above $0.4025 up to $0.4375	85	%	15	%
Third Target Distribution	above $0.4375 up to $0.5250	75	%	25	%
Thereafter	above $0.5250	50	%	50	%

Distributions from Capital Surplus

How Distributions from Capital Surplus Will Be Made

We will make distributions of available cash from capital surplus, if any, in the following manner:

• First, 98% to all unitholders, pro rata, and 2% to our general partner, until we distribute for each common unit an amount of available cash from capital surplus equal to the initial public offering price;

• Second, 98% to the common unitholders, pro rata, and 2% to our general partner, until we distribute for each common unit an amount of available cash from capital surplus equal to any unpaid arrearages in payment of the minimum quarterly distribution on the common units; and

• Thereafter, we will make all distributions of available cash from capital surplus as if they were from operating surplus.

The preceding discussion is based on the assumptions that our general partner maintains its 2% general partner interest and that we do not issue additional classes of equity securities.

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Effect of a Distribution from Capital Surplus

Our partnership agreement treats a distribution of capital surplus as the repayment of the initial unit price from our initial public offering, which is a return of capital. The initial public offering price in our initial public offering less any distributions of capital surplus per unit is referred to as the “unrecovered initial unit price.” Each time a distribution of capital surplus is made, the minimum quarterly distribution and the target distribution levels will be reduced in the same proportion as the corresponding reduction in the unrecovered initial unit price. Because distributions of capital surplus will reduce the minimum quarterly distribution, after any of these distributions are made, it may be easier for our general partner to receive incentive distributions and for the subordinated units to convert into common units. However, any distribution of capital surplus before the unrecovered initial unit price is reduced to zero cannot be applied to the payment of the minimum quarterly distribution or any arrearages.

Once we distribute capital surplus on a unit in an amount equal to the initial unit price, we will reduce the minimum quarterly distribution and the target distribution levels to zero. We will then make all future distributions from operating surplus, with 50% being paid to the unitholders, pro rata, and 50% to our general partner. The percentage interests shown for our general partner include its 2% general partner interest and assume our general partner maintains its 2% general partner interest and has not transferred its incentive distribution rights.

Adjustment to the Minimum Quarterly Distribution and Target Distribution Levels

In addition to adjusting the minimum quarterly distribution and target distribution levels to reflect a distribution of capital surplus, if we combine our units into fewer units or subdivide our units into a greater number of units, we will proportionately adjust:

• the minimum quarterly distribution;

• the target distribution levels; and

• the unrecovered initial unit price.

For example, if a two-for-one split of the common and subordinated units should occur, the minimum quarterly distribution, each target distribution level and the unrecovered initial unit price would each be reduced to 50% of its initial level. If we combine our common units into fewer units or subdivide our common units into a greater number of units, we will combine our subordinated units or subdivide our subordinated units using the same ratio applied to the common units. We will not make any adjustment by reason of the issuance of additional units for cash or property.

In addition, if legislation is enacted or if existing law is modified or interpreted by a court of competent jurisdiction so that we become taxable as a corporation or otherwise subject to taxation as an entity for federal, state or local income tax purposes, we will reduce the minimum quarterly distribution and the target distribution levels for each quarter by multiplying each distribution level by a fraction, the numerator of which is available cash for that quarter (after deducting our general partner’s estimate of our aggregate liability for the quarter for such income taxes payable by reason of such legislation or interpretation) and the denominator of which is the sum of available cash for that quarter plus our general partner’s estimate of our aggregate liability for the quarter for such income taxes payable by reason of such legislation or interpretation. To the extent that the actual tax liability differs from the estimated tax liability for any quarter, the difference will be accounted for in subsequent quarters.

The amount of distributions paid under our cash distribution policy and the decision to make any distribution is determined by our general partner, taking into consideration the terms of our partnership agreement.

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Distributions of Cash Upon Liquidation

General

If we dissolve in accordance with our partnership agreement, we will sell or otherwise dispose of our assets in a process called liquidation. We will first apply the proceeds of liquidation to the payment of our creditors. We will distribute any remaining proceeds to the unitholders and our general partner, in accordance with their capital account balances, as adjusted to reflect any gain or loss upon the sale or other disposition of our assets in liquidation.

The allocations of gain and loss upon liquidation are intended, to the extent possible, to entitle the holders of outstanding common units to a preference over the holders of outstanding subordinated units upon our liquidation, to the extent required to permit common unitholders to receive their unrecovered initial unit price plus the minimum quarterly distribution for the quarter during which liquidation occurs plus any unpaid arrearages in payment of the minimum quarterly distribution on the common units. However, there may not be sufficient gain upon our liquidation to enable the holders of common units to fully recover all of these amounts, even though there may be cash available for distribution to the holders of subordinated units. Any further net gain recognized upon liquidation will be allocated in a manner that takes into account the incentive distribution rights, currently owned by our general partner.

Manner of Adjustments for Gain

The manner of the adjustment for gain is set forth in our partnership agreement. If our liquidation occurs before the end of the subordination period, we will allocate any gain to the partners in the following manner:

• First, to our general partner and the holders of units who have negative balances in their capital accounts to the extent of and in proportion to those negative balances;

• Second, 98% to the common unitholders, pro rata, and 2% to our general partner, until the capital account for each common unit is equal to the sum of:

(1) the unrecovered initial unit price for that common unit;

(2) the amount of the minimum quarterly distribution for the quarter during which our liquidation occurs; and

(3) any unpaid arrearages in payment of the minimum quarterly distribution;

• Third, 98% to the subordinated unitholders, pro rata, and 2% to our general partner, until the capital account for each subordinated unit is equal to the sum of:

(1) the unrecovered initial unit price for that subordinated unit; and

(2) the amount of the minimum quarterly distribution for the quarter during which our liquidation occurs;

• Fourth, 98% to all unitholders, pro rata, and 2% to our general partner, until we allocate under this paragraph an amount per unit equal to:

(1) the sum of the excess of the first target distribution per unit over the minimum quarterly distribution per unit for each quarter of our existence; less

(2) the cumulative amount per unit of any distributions of available cash from operating surplus in excess of the minimum quarterly distribution per unit that we distributed 98% to the unitholders, pro rata, and 2% to our general partner, for each quarter of our existence;

• Fifth, 85% to all unitholders, pro rata, and 15% to our general partner, until we allocate under this paragraph an amount per unit equal to:

(1) the sum of the excess of the second target distribution per unit over the first target distribution per unit for each quarter of our existence; less

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(2) the cumulative amount per unit of any distributions of available cash from operating surplus in excess of the first target distribution per unit that we distributed 85% to the unitholders, pro rata, and 15% to our general partner for each quarter of our existence;

• Sixth, 75% to all unitholders, pro rata, and 25% to our general partner, until we allocate under this paragraph an amount per unit equal to:

(1) the sum of the excess of the third target distribution per unit over the second target distribution per unit for each quarter of our existence; less

(2) the cumulative amount per unit of any distributions of available cash from operating surplus in excess of the second target distribution per unit that we distributed 75% to the unitholders, pro rata, and 25% to our general partner for each quarter of our existence; and

• Thereafter, 50% to all unitholders, pro rata, and 50% to our general partner.

The percentages set forth above are based on the assumptions that our general partner maintains its 2% general partner interest and has not transferred its incentive distribution rights and that we do not issue additional classes of equity securities.

If the liquidation occurs after the end of the subordination period, the distinction between common units and subordinated units will disappear, so that clause (3) of the second bullet point above and all of the third bullet point above will no longer be applicable.

Manner of Adjustments for Losses

If our liquidation occurs before the end of the subordination period, we will generally allocate any loss to our general partner and the unitholders in the following manner:

• First, 98% to holders of subordinated units in proportion to the positive balances in their capital accounts and 2% to our general partner, until the capital accounts of the subordinated unitholders have been reduced to zero;

• Second, 98% to the holders of common units in proportion to the positive balances in their capital accounts and 2% to our general partner, until the capital accounts of the common unitholders have been reduced to zero; and

• Thereafter, 100% to our general partner.

The percentages set forth in the first and second bullet points above for our general partner are based on the assumptions that our general partner maintains its 2% general partner interest and that we do not issue additional classes of equity securities.

If the liquidation occurs after the end of the subordination period, the distinction between common units and subordinated units will disappear, so that all of the first bullet point above will no longer be applicable.

Adjustments to Capital Accounts

We will make adjustments to capital accounts upon the issuance of additional units. In doing so, we will allocate any unrealized and, for tax purposes, unrecognized gain or loss resulting from the adjustments to the unitholders and our general partner in the same manner as we allocate gain or loss upon liquidation. In the event that we make positive adjustments to the capital accounts upon the issuance of additional units, we will allocate any later negative adjustments to the capital accounts resulting from the issuance of additional units or upon our liquidation in a manner which results, to the extent possible, in our general partner’s capital account balances equaling the amount which they would have been if no earlier positive adjustments to the capital accounts had been made.

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CONFLICTS OF INTEREST AND FIDUCIARY DUTIES

Conflicts of Interest

Conflicts of interest exist and may arise in the future as a result of the relationships between our general partner and its affiliates, on the one hand, and us and our unaffiliated limited partners, on the other hand. The directors and officers of our general partner have fiduciary duties to manage our general partner in a manner beneficial to subsidiaries of Loews. At the same time, the directors and officers of our general partner has a fiduciary duty to manage us in a manner beneficial to our unitholders and us.

Whenever a conflict arises between our general partner or its affiliates, including Loews, on the one hand, and us or any other partner, on the other, our general partner will resolve that conflict. Our partnership agreement contains provisions that modify and limit our general partner’s fiduciary duties to our unitholders. Our partnership agreement also restricts the remedies available to unitholders for actions taken that, without those limitations, might constitute breaches of fiduciary duty.

Our general partner will not be in breach of its obligations under our partnership agreement or its duties to us or our unitholders if the resolution of the conflict is:

• approved by the conflicts committee, although our general partner is not obligated to seek such approval;

• approved by the vote of a majority of the outstanding common units, excluding any common units owned by our general partner or any of its affiliates, including Loews, although our general partner is not obligated to seek such approval;

• on terms no less favorable to us than those generally provided to or available from unrelated third parties; or

• fair and reasonable to us, taking into account the totality of the relationships between the parties involved, including other transactions that may be particularly favorable or advantageous to us.

Our general partner may, but is not required to, seek the approval of such resolution from the conflicts committee of its board of directors or from the common unitholders. If our general partner does not seek approval from the conflicts committee and its board of directors determines that the resolution or course of action taken with respect to the conflict of interest satisfies either of the standards set forth in the third and fourth bullet points above, then it will be presumed that, in making its decision, the board of directors, including board members affected by the conflict of interest, acted in good faith, and in any proceeding brought by or on behalf of any limited partner or the partnership the person bringing or prosecuting such proceeding will have the burden of overcoming such presumption. Unless the resolution of a conflict is specifically provided for in our partnership agreement, our general partner or the conflicts committee may consider any factors it determines in good faith to consider when resolving a conflict. When our partnership agreement requires someone to act in good faith, it requires that person to reasonably believe that he is acting in the best interests of the partnership, unless the context otherwise requires.

Conflicts of interest could arise in the situations described below, among others.

Our general partner’s affiliates may compete with us.

Our partnership agreement provides that our general partner is restricted from engaging in any business activities other than acting as our general partner or those activities incidental to its ownership of interests in us. Except as provided in our partnership agreement, Loews and other affiliates of our general partner are not prohibited from engaging in other businesses or activities, including those that might be in direct competition with us.

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Our general partner is allowed to take into account the interests of parties other than us in resolving conflicts.

Our partnership agreement contains provisions that reduce the standards to which our general partner would otherwise be held by state fiduciary duty law. For example, our partnership agreement permits our general partner to make a number of decisions in its individual capacity, as opposed to in its capacity as our general partner. This entitles our general partner to consider only the interests and factors that it desires, and it has no duty or obligation to give any consideration to any interest of, or factors affecting, us, our affiliates or any limited partner. Examples include the exercise of its call rights, its voting rights with respect to the units it owns, and its registration rights and its determination whether to consent to any merger or consolidation of the partnership.

Our general partner has limited its liability and reduced its fiduciary duties, and has also restricted the remedies available to our unitholders for actions that, without the limitations, might constitute breaches of fiduciary duty.

In addition to the provisions described above, our partnership agreement contains provisions that restrict the remedies available to our unitholders for actions that might otherwise constitute breaches of fiduciary duty. For example, our partnership agreement:

• provides that our general partner shall not have any liability to us or our unitholders for decisions made in its capacity as a general partner so long as it acted in good faith, meaning it believed that the decision was in the best interests of the partnership;

• generally provides that affiliate transactions and resolutions of conflicts of interest not approved by the conflicts committee of the board of directors of our general partner and not involving a vote of unitholders must be on terms no less favorable to us than those generally provided to or available from unrelated third parties or be fair and reasonable to us, as determined by our general partner in good faith, and that, in determining whether a transaction or resolution is fair and reasonable, our general partner may consider the totality of the relationships between the parties involved, including other transactions that may be particularly advantageous or beneficial to us; and

• provides that our general partner and its officers and directors will not be liable for monetary damages to us or our limited partners for any acts or omissions unless there has been a final and non-appealable judgment entered by a court of competent jurisdiction determining that our general partner or its officers or directors acted in bad faith or engaged in fraud or willful misconduct.

Actions taken by our general partner may affect the amount of cash distributions to unitholders or accelerate the right to convert subordinated units.

The amount of cash that is available for distribution to unitholders is affected by decisions of our general partner regarding such matters as:

• the amount and timing of asset purchases and sales;

• cash expenditures;

• borrowings;

• the issuance of additional units; and

• the creation, reduction, or increase of reserves in any quarter.

In addition, borrowings by us and our affiliates do not constitute a breach of any duty owed by our general partner to our unitholders, including borrowings that have the purpose or effect of:

• enabling our general partner or its affiliates to receive distributions on any subordinated units held by them or the incentive distribution rights; or

• hastening the expiration of the subordination period.

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For example, in the event we have not generated sufficient cash from our operations to pay the minimum quarterly distribution on our common units and our subordinated units, our partnership agreement permits us to borrow funds, which would enable us to make this distribution on all outstanding units. Please read “How We Make Cash Distributions—Subordination Period.”

Our partnership agreement provides that we and our subsidiaries may borrow funds from our general partner or its affiliates. Our general partner and its affiliates may not borrow funds from us or our subsidiaries.

We reimburse our general partner and its affiliates for expenses.

We reimburse our general partner and its affiliates for costs incurred in managing and operating us, including costs incurred in rendering corporate staff and support services to us, including overhead allocated to us by Loews in amounts allowable consistent with accounting and allocation methodologies generally permitted by FERC for rate-making purposes and past business practices. Our partnership agreement provides that our general partner determines in good faith the expenses that are allocable to us and that reimbursement of overhead to Loews as described above is fair and reasonable to us.

Contracts between us, on the one hand, and our general partner or its affiliates, on the other, will not be the result of arm’s-length negotiations.

Our partnership agreement allows our general partner to determine, in good faith, the amounts to pay itself or its affiliates for any services rendered to us. Our general partner may also enter into additional contractual arrangements with Loews or any of its other affiliates on our behalf. Neither our partnership agreement nor any of the other agreements, contracts and arrangements between us and our general partner or its affiliates are or will be the result of arm’s-length negotiations.

Our partnership agreement generally provides that any affiliate transaction, such as an agreement, contract or arrangement between us and our general partner or its affiliates, must be:

• on terms no less favorable to us than those generally provided to or available from unrelated third parties; or

• fair and reasonable to us, taking into account the totality of the relationships between the parties involved (including other transactions that may be particularly favorable or advantageous to us).

Our general partner determines, in good faith, the terms of any of these transactions.

Our general partner and its affiliates have no obligation to permit us to use any of their facilities or assets, except as may be provided in contracts entered into specifically dealing with that use. There is no obligation of our general partner or its affiliates to enter into any contracts of this kind.

Our general partner intends to limit its liability regarding our obligations.

Our general partner intends to limit its liability under contractual arrangements so that the other party has recourse only to our assets and not against our general partner or its assets. Our partnership agreement provides that any action taken by our general partner to limit its or our liability is not a breach of our general partner’s fiduciary duties, even if we could have obtained terms that were more favorable had the limitation on liability not been included.

Common units are subject to our general partner’s call rights.

Our general partner may exercise its rights to call common units as provided in our partnership agreement or assign this right to one of its affiliates or to us. Our general partner may use its own discretion, free of fiduciary duty restrictions, in determining whether to exercise this right. As a result, a common unitholder may have his common units purchased from him at an undesirable time or price. Please read “The Partnership Agreement—Call Rights.”

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Common unitholders have no right to enforce obligations of our general partner and its affiliates under agreements with us.

Any agreements between us, on the one hand, and our general partner or its affiliates, on the other, will not grant to the unitholders, separate and apart from us, the right to enforce the obligations of our general partner or its affiliates in our favor.

We may choose not to retain separate counsel for ourselves or for the holders of common units.

The attorneys, independent accountants and others who perform services for us have been retained by our general partner or its affiliates. Attorneys, independent accountants and others who perform services for us are selected by our general partner or the conflicts committee and may perform services for our general partner and its affiliates. We may retain separate counsel for ourselves or the holders of common units in the event of a conflict of interest between our general partner or its affiliates, on the one hand, and us or the holders of common units, on the other, depending on the nature of the conflict. We do not intend to do so in most cases.

Except in limited circumstances, our general partner has the power and authority to conduct our business without unitholder approval.

Under our partnership agreement, our general partner has full power and authority to do all things, other than those items that require unitholder approval or with respect to which our general partner has sought conflicts committee approval, on such terms as it determines to be necessary or appropriate to conduct our business including, but not limited to, the following:

• the making of any expenditures, the lending or borrowing of money, the assumption or guarantee of, or other contracting for, indebtedness and other liabilities, the issuance of evidences of indebtedness, including indebtedness that is convertible into securities of the partnership, and the incurring of any other obligations;

• the making of tax, regulatory and other filings, or rendering of periodic or other reports to governmental or other agencies having jurisdiction over our business or assets;

• the acquisition, disposition, mortgage, pledge, encumbrance, hypothecation or exchange of any or all of our assets or the merger or other combination of us with or into another person;

• the negotiation, execution and performance of any contracts, conveyances or other instruments;

• the distribution of partnership cash;

• the selection and dismissal of employees and agents, outside attorneys, accountants, consultants and contractors and the determination of their compensation and other terms of employment or hiring;

• the maintenance of insurance for our benefit and the benefit of our partners;

• the formation of, or acquisition of an interest in, and the contribution of property and the making of loans to, any further limited or general partnerships, joint ventures, corporations, limited liability companies or other relationships;

• the control of any matters affecting our rights and obligations, including the bringing and defending of actions at law or in equity and otherwise engaging in the conduct of litigation, arbitration or mediation and the incurring of legal expense and the settlement of claims and litigation;

• the indemnification of any person against liabilities and contingencies to the extent permitted by law;

• the purchase, sale or other acquisition or disposition of our securities, or the issuance of additional options, rights, warrants and appreciation rights relating to our securities; and

• the entering into of agreements with any of its affiliates to render services to us or to itself in the discharge of its duties as our general partner.

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Fiduciary Duties

Our general partner is accountable to us and our unitholders as a fiduciary. Fiduciary duties owed to unitholders by our general partner are prescribed by law and our partnership agreement. The Delaware Act provides that Delaware limited partnerships may, in their partnership agreements, eliminate, restrict or expand the fiduciary duties otherwise owed by a general partner to limited partners and the partnership.

Our partnership agreement contains various provisions modifying and restricting the fiduciary duties that might otherwise be owed by our general partner. We have adopted these provisions to allow our general partner or its affiliates to engage in transactions with us that would otherwise be prohibited by state law fiduciary standards and to take into account the interests of parties other than us when resolving conflicts of interest. Without such modifications, such transactions could result in violations of our general partner’s state law fiduciary duty standards, and our general partner’s ability to make decisions involving conflicts of interest would be restricted. We believe this is appropriate and necessary because the board of directors of our general partner has fiduciary duties to manage our general partner in a manner beneficial to its owners and fiduciary duties to manage us in a manner beneficial to you. The modifications to the fiduciary standards enable our general partner to take into consideration all parties involved in the proposed action, so long as the resolution is fair and reasonable to us. These modifications also strengthen the ability of our general partner to attract and retain experienced and capable directors. However, these modifications disadvantage the common unitholders because they restrict the rights and remedies that would otherwise be available to unitholders for actions that, without those modifications, might constitute breaches of fiduciary duty, as described below, and permit our general partner to take into account the interests of parties other than us when resolving conflicts of interest. The following is a summary of the material restrictions of the fiduciary duties owed by our general partner to the limited partners:

State law fiduciary duty standards Fiduciary duties are generally considered to include an obligation to act in good faith and with due care and loyalty. The duty of care, in the absence of a provision in a partnership agreement providing otherwise, would generally require a general partner to act for the partnership in the same manner as a prudent person would act on his own behalf. The duty of loyalty, in the absence of a provision in a partnership agreement providing otherwise, would generally prohibit a general partner of a Delaware limited partnership from taking any action or engaging in any transaction where a conflict of interest is present.

Partnership agreement modified standards Our partnership agreement contains provisions that waive or consent to conduct by our general partner and its affiliates that might otherwise raise issues as to compliance with fiduciary duties or applicable law. For example, our partnership agreement provides that when our general partner is acting in its capacity as our general partner, as opposed to in its individual capacity, it must act in good faith and will not be subject to any other standard under applicable law. In addition, when our general partner is acting in its individual capacity, as opposed to in its capacity as our general partner, it may act without any fiduciary obligation to us or the unitholders whatsoever. These provisions reduce the standards to which our general partner would otherwise be held.

Our partnership agreement generally provides that affiliate transactions and resolutions of conflicts of interest not approved by a vote of unitholders or approved by the conflicts committee of the board of directors of our general partner must be:

• on terms no less favorable to us than those generally provided to or available from unrelated third parties; or

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• fair and reasonable to us, taking into account the totality of the relationships between the parties involved (including other transactions that may be particularly favorable or advantageous to us).

If our general partner does not seek approval from the conflicts committee or the common unitholders and its board of directors determines that the resolution or course of action taken with respect to the conflict of interest satisfies either of the standards set forth in the bullet points above, then it will be presumed that, in making its decision, the board of directors, which may include board members affected by the conflict of interest, acted in good faith, and in any proceeding brought by or on behalf of any limited partner or the partnership, the person bringing or prosecuting such proceeding will have the burden of overcoming such presumption. These provisions reduce the standards to which our general partner would otherwise be held.

Our partnership agreement provides that the allocation of overhead costs to us by our general partner and its affiliates (including Loews) consistent with then-applicable accounting and allocation methodologies generally permitted by FERC for rate-making purposes (or in the absence of then-applicable methodologies permitted by FERC, consistent with the most-recently applicable methodologies) and past business practices shall be deemed to be fair and reasonable to us.

In addition to the other more specific provisions limiting the obligations of our general partner, our partnership agreement further provides that our general partner and its officers and directors will not be liable for monetary damages to us or our limited partners for any acts or omissions unless there has been a final and non-appealable judgment by a court of competent jurisdiction determining that our general partner or its officers and directors acted in bad faith or engaged in fraud or willful misconduct.

Rights and remedies of unitholders The Delaware Act generally provides that a limited partner may institute legal action on behalf of the partnership to recover damages from a third party where a general partner has refused to institute the action or where an effort to cause a general partner to do so is not likely to succeed. These actions include actions against a general partner for breach of its fiduciary duties or of a partnership agreement. In addition, the statutory or case law of some jurisdictions may permit a limited partner to institute legal action on behalf of it and all other similarly situated limited partners to recover damages from a general partner for violations of its fiduciary duties to the limited partners.

In order to become one of our limited partners, a common unitholder is required to agree to be bound by our partnership agreement, including the provisions discussed above. Please read “Description of the Common Units—Transfer of Common Units.” This is in accordance with the policy of the Delaware Act favoring the principle of freedom of contract and the enforceability of partnership agreements. The failure of a limited partner or assignee to sign the partnership agreement does not render our partnership agreement unenforceable against that person.

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Under our partnership agreement, we must indemnify our general partner and its officers and directors, to the fullest extent permitted by law, against liabilities, costs and expenses incurred by our general partner or these other persons. We must provide this indemnification unless there has been a final and non-appealable judgment by a court of competent jurisdiction determining that these persons acted in bad faith or engaged in fraud or willful misconduct. We also must provide this indemnification for criminal proceedings unless these persons acted with knowledge that their conduct was unlawful. Thus, our general partner could be indemnified for its negligent acts if it meets the requirements set forth above. To the extent that these provisions purport to include indemnification for liabilities arising under the Securities Act of 1933 (or the Securities Act), in the opinion of the SEC such indemnification is contrary to public policy and therefore unenforceable. Please read “The Partnership Agreement—Indemnification.”

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THE PARTNERSHIP AGREEMENT

The following is a summary of the material provisions of our partnership agreement. Our partnership agreement is incorporated by reference as an exhibit to the registration statement of which this prospectus constitutes a part. We will provide prospective investors with a copy of this agreement upon request at no charge.

We summarize the following provisions of our partnership agreement elsewhere in this prospectus:

• with regard to distributions of available cash, please read “How We Make Cash Distributions;”

• with regard to the fiduciary duties of our general partner, please read “Conflicts of Interest and Fiduciary Duties;”

• with regard to the transfer of common units, please read “Description of the Common Units—Transfer of Common Units;” and

• with regard to allocations of taxable income and taxable loss, please read “Material Tax Consequences.”

Organization and Duration

We were organized on August 4, 2005 and have a perpetual existence.

Purpose

Our purpose under our partnership agreement is limited to any business activities that relate to the business of gathering, transmitting by pipeline or storing natural gas (either in gaseous or liquid form) (the “transmission business”) or activities now or hereafter customarily conducted in conjunction with the transmission business, that are approved by our general partner in its sole discretion, and any other business that is approved by our general partner, in its sole discretion, and in any event that lawfully may be conducted by a limited partnership organized under Delaware law; provided, that our general partner may not cause us to engage, directly or indirectly, in any business activity that our general partner determines would cause us to be treated as an association taxable as a corporation or otherwise taxable as an entity for federal income tax purposes.

Although our general partner, in its individual capacity, has the power to expand our purpose to activities other than those that relate to the transmission business or activities now or hereafter customarily conducted in conjunction with the transmission business, our general partner has no current plans to do so and may decline to do so free of any fiduciary duty or obligation whatsoever to us or the limited partners, including any duty to act in good faith or in the best interests of us or the limited partners. However, any decision by our general partner to cause us or our subsidiaries to invest in activities will be subject to its fiduciary duties as modified by our partnership agreement. In general, our general partner is authorized to perform all acts it determines to be necessary or appropriate to carry out our purposes and to conduct our business.

Power of Attorney

Each limited partner and each person who acquires a unit from a unitholder and executes and delivers a transfer application and certification grants to our general partner and, if appointed, a liquidator, a power of attorney to, among other things, execute and file documents required for our qualification, continuance or dissolution. The power of attorney also grants our general partner the authority to amend, and to make consents and waivers under, our partnership agreement.

Capital Contributions

Unitholders are not obligated to make additional capital contributions, except as described below under “—Limited Liability.”

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Voting Rights

The following matters require the limited partner vote specified below. Various matters require the approval of a “unit majority,” which means:

• during the subordination period, the approval of a majority of the common units, excluding those common units held by our general partner and its affiliates, and a majority of the subordinated units, voting as separate classes; and

• after the subordination period, the approval of a majority of the common units.

By virtue of the exclusion of those common units held by our general partner and its affiliates from the required vote, and by their ownership of all of the subordinated units, during the subordination period our general partner and its affiliates do not have the ability to ensure passage of, but do have the ability to ensure defeat of, any matter which requires a unit majority.

In voting their common and subordinated units, our general partner and its affiliates will have no fiduciary duty or obligation whatsoever to us or the limited partners, including any duty to act in good faith or in the best interests of us and our limited partners.

The following is a summary of the vote requirements specified for certain matters under our partnership agreement:

Issuance of additional units No approval required.

Amendment of our partnership agreement Certain amendments may be made by our general partner without the approval of the limited partners. Other amendments generally require the approval of a unit majority. Please read “—Amendment of Our Partnership Agreement.”

Merger of our partnership or the sale of all or substantially all of our assets Unit majority in certain circumstances. Please read “—Merger, Sale, or Other Disposition of Assets.”

Continuation of our partnership upon dissolution Unit majority. Please read “—Termination and Dissolution.”

Withdrawal of our general partner Under most circumstances, the approval of a majority of the common units, excluding common units held by our general partner and its affiliates, is required for the withdrawal of our general partner prior to September 30, 2015 in a manner which would cause a dissolution of our partnership. Please read “—Withdrawal or Removal of Our General Partner.”

Removal of our general partner Not less than 66 ²/3% of the outstanding common and subordinated units, voting as a single class, including common and subordinated units held by our general partner and its affiliates. Please read “—Withdrawal or Removal of Our General Partner.”

Transfer of our general partner interest Our general partner may transfer all, but not less than all, of its general partner interest in us, without a vote of our limited partners, to an affiliate or to another person in connection with its merger or consolidation with or into, or sale of all or substantially all of its assets to, such person. The approval of a majority of the common units, excluding common units held by our general partner and its

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affiliates, is required in other circumstances for a transfer of the general partner interest to a third party prior to September 30, 2015. Please read “—Transfer of General Partner Interest.”

Transfer of incentive distribution rights Except for transfers to an affiliate or to another person in connection with our general partner’s merger or consolidation with or into, or sale of all or substantially all of its assets to, such person, the approval of a majority of the common units, excluding common units held by our general partner and its affiliates is required in most circumstances for a transfer of the incentive distribution rights to a third party prior to September 30, 2015. Please read “—Transfer of Incentive Distribution Rights.”

Transfer of ownership interests in our general partner No approval required at any time. Please read “—Transfer of Ownership Interests in Our General Partner.”

Limited Liability

Participation in the Control of Our Partnership

Assuming that a limited partner does not participate in the control of our business within the meaning of the Delaware Act and that he otherwise acts in conformity with the provisions of our partnership agreement, its liability under the Delaware Act will be limited, subject to possible exceptions, to the amount of capital it is obligated to contribute to us for its common units plus its share of any undistributed profits and assets. If it were determined, however, that the right of, or exercise of the right by, the limited partners as a group:

• to remove or replace our general partner;

• to approve some amendments to our partnership agreement; or

• to take other action under our partnership agreement;

constituted “participation in the control” of our business for the purposes of the Delaware Act, then the limited partners could be held personally liable for our obligations under the laws of Delaware to the same extent as our general partner. This liability would additionally extend to persons who transact business with us who reasonably believe that the limited partner is a general partner. Neither our partnership agreement nor the Delaware Act specifically provides for legal recourse against our general partner if a limited partner were to lose limited liability through any fault of our general partner. While this does not mean that a limited partner could not seek legal recourse, we know of no precedent for such a claim in Delaware case law.

Unlawful Partnership Distribution

Under the Delaware Act, a limited partnership may not make a distribution to a partner if, after the distribution, all liabilities of the limited partnership, other than liabilities to partners on account of their partnership interests and liabilities for which the recourse of creditors is limited to specific property of the partnership, would exceed the fair value of the assets of the limited partnership. For the purpose of determining the fair value of the assets of a limited partnership, the Delaware Act provides that the fair value of property subject to liability for which recourse of creditors is limited shall be included in the assets of the limited partnership only to the extent that the fair value of that property exceeds the nonrecourse liability. The Delaware Act provides that a limited partner who receives a distribution and knew at the time of the distribution that the distribution was in violation of the Delaware Act shall be liable to the limited partnership for the amount of the distribution for three years. Under the Delaware Act, an assignee who becomes a substituted limited partner of a limited partnership is liable for the obligations of his assignor to make contributions to the partnership, except the assignee is not obligated for liabilities unknown to him at the time he became a limited partner and that could not be ascertained from our partnership agreement.

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Failure to Comply with the Limited Liability Provisions of Jurisdictions in Which We Do Business

We conduct business in 12 states. We may conduct business in other states in the future. Maintenance of our limited liability as a limited partner of Boardwalk Pipelines may require compliance with legal requirements in the jurisdictions in which Boardwalk Pipelines conducts business, including qualifying our subsidiaries to do business there.

Limitations on the liability of limited partners for the obligations of a limited partnership have not been clearly established in many jurisdictions. If, by virtue of our limited partner interest in Boardwalk Pipelines or otherwise, it were determined that we were conducting business in any state without compliance with the applicable limited partnership or limited liability company statute, or that the right of, or exercise of the right, by the limited partners as a group, to remove or replace our general partner, to approve some amendments to our partnership agreement, or to take other action under our partnership agreement constituted “participation in the control” of our business for purposes of the statutes of any relevant jurisdiction, then the limited partners could be held personally liable for our obligations under the law of that jurisdiction to the same extent as our general partner under the circumstances. We will operate in a manner that our general partner considers reasonable and necessary or appropriate to preserve the limited liability of the limited partners.

Issuance of Additional Securities

Our partnership agreement authorizes us to issue an unlimited number of additional partnership securities for the consideration and on the terms and conditions determined by our general partner without the approval of the unitholders.

It is possible that we will fund acquisitions through the issuance of additional common units, subordinated units or other partnership securities. Holders of any additional common units we issue will be entitled to share equally with the then-existing holders of common units in our distributions of available cash. In addition, the issuance of additional common units or other partnership securities may dilute the value of the interests of the then-existing holders of common units in our net assets.

In accordance with Delaware law and the provisions of our partnership agreement, we may also issue additional partnership securities that, as determined by our general partner, have special voting rights to which the common units are not entitled. In addition, our partnership agreement does not prohibit the issuance by our subsidiaries of equity securities, which may effectively rank senior to our common units.

Our general partner’s 2% interest in us is represented by unit equivalents for allocation and distribution purposes. Upon issuance of additional partnership securities, our general partner will have the right, but not the obligation, to make additional capital contributions to us in exchange for a proportionate number of general partner unit equivalents, to the extent necessary to maintain its general partner interest of the total units and unit equivalents outstanding prior to the issuance at the same percentage level. Our general partner’s 2% interest in us will thus be reduced if we issue additional partnership securities in the future and our general partner does not elect to maintain its 2% general partner interest. In addition, our general partner will have the right, which it may from time to time assign in whole or in part to any of its affiliates, to purchase common units, subordinated units or other partnership securities to the extent necessary to maintain its and its affiliates’ percentage interest in us, whenever, and on the same terms that, we issue those securities to persons other than our general partner and its affiliates. The holders of common units will not have preemptive rights to acquire additional common units or other partnership securities.

Amendment of Our Partnership Agreement

General

Amendments to our partnership agreement may be proposed only by our general partner. However, our general partner will have no duty or obligation to propose any amendment and may decline to do so free of any fiduciary duty or obligation whatsoever to us or the limited partners, including any duty to act in good faith or in

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the best interests of us or the limited partners. In order to adopt a proposed amendment, other than the amendments discussed below, our general partner must seek written approval of the holders of the number of units required to approve the amendment or call a meeting of the limited partners to consider and vote upon the proposed amendment. Except as described below, an amendment must be approved by a unit majority.

Prohibited Amendments

No amendment may:

• enlarge the obligations of any limited partner without its consent, unless approved by at least a majority of the type or class of limited partner interests so affected; or

• enlarge the obligations of, restrict in any way any action by or rights of, or reduce in any way the amounts distributable, reimbursable or otherwise payable by us to our general partner or any of its affiliates without the consent of our general partner, which may be given or withheld at its option.

The provision of our partnership agreement preventing the amendments having the effects described in the bullets above can be amended upon the approval of the holders of at least 90% of the outstanding units, voting together as a single class (including units owned by our general partner and its affiliates).

No Limited Partner Approval

Our general partner may generally make amendments to the partnership agreement without the approval of any limited partner or assignee to reflect:

• a change in our name, the location of our principal place of business, our registered agent or our registered office;

• the admission, substitution, withdrawal or removal of partners in accordance with our partnership agreement;

• a change that our general partner determines to be necessary or appropriate for us to qualify or to continue our qualification as a limited partnership or a partnership in which the limited partners have limited liability under the laws of any state or to ensure that neither we, Boardwalk Pipelines, nor its subsidiaries will be treated as an association taxable as a corporation or otherwise taxed as an entity for federal income tax purposes (to the extent not already so treated or taxed);

• an amendment that is necessary, in the opinion of our counsel, to prevent us or our general partner or its directors, officers, agents, or trustees from in any manner being subjected to the provisions of the Investment Company Act of 1940, the Investment Advisors Act of 1940, or “plan asset” regulations adopted under the Employee Retirement Income Security Act of 1974 (or ERISA), whether or not substantially similar to plan asset regulations currently applied or proposed;

• an amendment that our general partner determines to be necessary or appropriate for the authorization of additional partnership securities or rights to acquire partnership securities;

• any amendment expressly permitted in our partnership agreement to be made by our general partner acting alone;

• an amendment effected, necessitated or contemplated by a merger agreement that has been approved under the terms of our partnership agreement;

• any amendment that our general partner determines to be necessary or appropriate for the formation by us of, or our investment in, any corporation, partnership or other entity, as otherwise permitted by our partnership agreement;

• a change in our fiscal year or taxable year and related changes;

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• mergers with or conveyances to another limited liability entity that is newly formed and has no assets, liabilities or operations at the time of the merger or conveyance other than those it receives by way of the merger or conveyance; or

• any other amendments substantially similar to any of the matters described above.

In addition, our general partner may make amendments to our partnership agreement without the approval of any limited partner or assignee if our general partner determines that those amendments:

• do not adversely affect the limited partners (or any particular class of limited partners) in any material respect;

• are necessary or appropriate to satisfy any requirements, conditions, or guidelines contained in any opinion, directive, order, ruling, or regulation of any federal or state agency or judicial authority or contained in any federal or state statute;

• are necessary or appropriate to facilitate the trading of limited partner interests or to comply with any rule, regulation, guideline, or requirement of any securities exchange on which the limited partner interests are or will be listed for trading;

• are necessary or appropriate for any action taken by our general partner relating to splits or combinations of units under the provisions of our partnership agreement; or

• are required to effect the intent expressed in this prospectus or the intent of the provisions of our partnership agreement or are otherwise contemplated by our partnership agreement.

Opinion of Counsel and Limited Partner Approval

Our general partner will not be required to obtain an opinion of counsel that an amendment will not result in a loss of limited liability to the limited partners or result in our being treated as an entity for federal income tax purposes in connection with any of the amendments described under “—No Limited Partner Approval.” No other amendments to our partnership agreement will become effective without the approval of holders of at least 90% of the outstanding units voting as a single class unless we first obtain an opinion of counsel to the effect that the amendment will not affect the limited liability under Delaware law of any of our limited partners. Finally, our general partner may consummate any merger without the prior approval of our limited partners if we are the surviving entity in the transaction, the transaction would not result in a material amendment to our partnership agreement, each of our units will be an identical unit of our partnership following the transaction, the units to be issued do not exceed 20% of our outstanding units immediately prior to the transaction and our general partner has received an opinion of counsel regarding certain limited liability and tax matters.

In addition to the above restrictions, any amendment that would have a material adverse effect on the rights or preferences of any type or class of outstanding units in relation to other classes of units will require the approval of at least a majority of the type or class of units so affected. Any amendment that reduces the voting percentage required to take any action must be approved by the affirmative vote of limited partners whose aggregate outstanding units constitute not less than the voting requirement sought to be reduced.

Merger, Sale, or Other Disposition of Assets

A merger or consolidation of us requires the prior consent of our general partner. However, our general partner will have no duty or obligation to consent to any merger or consolidation and may decline to do so free of any fiduciary duty or obligation whatsoever to us or the limited partners, including any duty to act in good faith or in the best interest of us or the limited partners.

In addition, our partnership agreement generally prohibits our general partner, without the prior approval of the holders of units representing a unit majority, from causing us to, among other things, sell, exchange or otherwise dispose of all or substantially all of our assets in a single transaction or a series of related transactions,

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including by way of merger, consolidation or other combination, or approving on our behalf the sale, exchange or other disposition of all or substantially all of the assets of our subsidiaries. Our general partner may, however, mortgage, pledge, hypothecate or grant a security interest in all or substantially all of our assets without that approval. Our general partner may also sell all or substantially all of our assets under a foreclosure or other realization upon those encumbrances without that approval.

If the conditions specified in our partnership agreement are satisfied, our general partner may convert us or any of our subsidiaries into a new limited liability entity or merge us or any of our subsidiaries into, or convey some or all of our assets to, a newly formed entity if the sole purpose of that merger or conveyance is to effect a mere change in our legal form into another limited liability entity. The limited partners are not entitled to dissenters’ rights of appraisal under our partnership agreement or applicable Delaware law in the event of a conversion, merger or consolidation, a sale of substantially all of our assets or any other transaction or event.

Termination and Dissolution

We will continue as a limited partnership until terminated under our partnership agreement. We will dissolve upon:

• the election of our general partner to dissolve us, if approved by the holders of units representing a unit majority;

• the sale, exchange or other disposition of all or substantially all of our assets and properties and our subsidiaries;

• the entry of a decree of judicial dissolution of our partnership; or

• the withdrawal or removal of our general partner or any other event that results in its ceasing to be our general partner other than by reason of a transfer of its general partner interest in accordance with our partnership agreement or withdrawal or removal following approval and admission of a successor.

Upon a dissolution under the fourth bullet point listed above, the holders of a unit majority may also elect, within specific time limitations, to reconstitute us and continue our business on the same terms and conditions described in our partnership agreement by forming a new limited partnership on terms identical to those in our partnership agreement and having as general partner an entity approved by the holders of units representing a unit majority, subject to our receipt of an opinion of counsel to the effect that:

• the action would not result in the loss of limited liability under Delaware law of any limited partner; and

• neither our partnership nor any of our subsidiaries would be treated as an association taxable as a corporation or otherwise be taxable as an entity for federal income tax purposes upon the exercise of that right to continue (to the extent not already so treated or taxed).

Liquidation and Distribution of Proceeds

Upon our dissolution, unless we are reconstituted and continued as a new limited partnership, the liquidator authorized to wind up our affairs will, acting with all of the powers of our general partner that are necessary or appropriate, liquidate our assets and apply the proceeds of the liquidation as described in “How We Make Cash Distributions—Distributions of Cash Upon Liquidation.” The liquidator may defer liquidation or distribution of our assets for a reasonable period of time or distribute assets to partners in kind if it determines that a sale would be impractical or would cause undue loss to our partners.

Withdrawal or Removal of Our General Partner

Except as described below, our general partner has agreed not to withdraw voluntarily as our general partner prior to September 30, 2015 without obtaining the approval of the holders of at least a majority of the outstanding common units, excluding common units held by our general partner and its affiliates, and furnishing an opinion

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of counsel regarding limited liability and tax matters. On or after September 30, 2015, our general partner may withdraw as general partner without first obtaining approval of any unitholder by giving 90 days’ written notice, and that withdrawal will not constitute a violation of our partnership agreement. Notwithstanding the information above, our general partner may withdraw without unitholder approval upon 90 days’ notice to the limited partners if at least 50% of the outstanding common units are held or controlled by one person and its affiliates other than our general partner and its affiliates. In addition, our partnership agreement permits our general partner in some instances to sell or otherwise transfer all of its general partner interest in us without the approval of the limited partners. Please read “—Transfer of General Partner Interest” and “—Transfer of Incentive Distribution Rights.”

Upon the withdrawal of our general partner under any circumstances, other than as a result of a transfer by our general partner of all or a part of its general partner interest in us, the holders of a majority of the outstanding common units and subordinated units, voting as separate classes, may select a successor to that withdrawing general partner. If a successor is not elected, or is elected but an opinion of counsel regarding limited liability and tax matters cannot be obtained, we will be dissolved, wound up and liquidated, unless within a specified period of time after that withdrawal, the holders of a unit majority agree in writing to continue our business and to appoint a successor general partner. Please read “—Termination and Dissolution.”

Our general partner may not be removed unless that removal is approved by the vote of the holders of not less than 66²/3% of the outstanding units, voting together as a single class, including units held by our general partner and its affiliates, and we receive an opinion of counsel regarding limited liability and tax matters. Any removal of our general partner is also subject to the approval of a successor general partner by the vote of the holders of a majority of the outstanding common units and subordinated units, voting as separate classes. The ownership of more than 33¹/3% of the outstanding units by our general partner and its affiliates would give them the practical ability to prevent our general partner’s removal.

Our partnership agreement also provides that if our general partner is removed as our general partner under circumstances where cause does not exist and no units held by our general partner and its affiliates are voted in favor of that removal:

• the subordination period will end and all outstanding subordinated units will immediately convert into common units on a one-for-one basis;

• any existing arrearages in payment of the minimum quarterly distribution on the common units will be extinguished; and

• our general partner will have the right to convert its general partner interest and its incentive distribution rights into common units or to receive cash in exchange for those interests based on the fair market value of the interests at the time.

In the event of removal of our general partner under circumstances where cause exists or withdrawal of our general partner where that withdrawal violates our partnership agreement, a successor general partner will have the option to purchase the general partner interest and incentive distribution rights of the departing general partner for a cash payment equal to the fair market value of those interests. Under all other circumstances where our general partner withdraws or is removed by the limited partners, the departing general partner will have the option to require the successor general partner to purchase the general partner interest of the departing general partner and its incentive distribution rights for their fair market value. In each case, this fair market value will be determined by agreement between the departing general partner and the successor general partner. If no agreement is reached, an independent investment banking firm or other independent expert selected by the departing general partner and the successor general partner will determine the fair market value. Or, if the departing general partner and the successor general partner cannot agree upon an expert, then an expert chosen by agreement of the experts selected by each of them will determine the fair market value.

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If the option described above is not exercised by either the departing general partner or the successor general partner, the departing general partner’s general partner interest and its incentive distribution rights will automatically convert into common units with a value equal to the fair market value of those interests as determined by an investment banking firm or other independent expert selected in the manner described in the preceding paragraph.

In addition, we will be required to reimburse the departing general partner for all amounts due to it, including, without limitation, all employee-related liabilities, including severance liabilities, incurred for the termination of any employees employed by the departing general partner or its affiliates for our benefit.

Transfer of General Partner Interest

Except for the transfer by our general partner of all, but not less than all, of its general partner interest to:

• an affiliate of our general partner (other than an individual), or

• another entity in connection with the merger or consolidation of our general partner with or into such other entity or the transfer by our general partner of all or substantially all of its assets to such other entity,

our general partner may not transfer all or any part of its general partner interest in our partnership to another person prior to September 30, 2015 without the approval of the holders of a majority of the outstanding common units, excluding common units held by our general partner and its affiliates. As a condition of this transfer, the transferee must, among other things, assume the rights and duties of our general partner, agree to be bound by the provisions of our partnership agreement and furnish an opinion of counsel regarding limited liability and tax matters.

Our general partner and its affiliates may at any time transfer units to one or more persons, without unitholder approval, except that they may not transfer subordinated units to us.

Transfer of Ownership Interests in Our General Partner

At any time, the owners of our general partner may sell or transfer all or part of their ownership interests in our general partner to an affiliate or a third party without the approval of our unitholders.

Transfer of Incentive Distribution Rights

Our general partner, its affiliates or a subsequent holder may transfer their incentive distribution rights to an affiliate of the holder (other than an individual) or to another entity as part of the merger or consolidation of such holder with or into such entity, the sale of all of the ownership interest in such holder or the sale of all or substantially all of such holder’s assets to such entity without the prior approval of the unitholders. Prior to September 30, 2015, other transfers of the incentive distribution rights will require the affirmative vote of holders of a majority of the outstanding common units, excluding common units held by our general partner and its affiliates. On or after September 30, 2015, the incentive distribution rights will be freely transferable.

Change of Management Provisions

Our partnership agreement contains specific provisions that are intended to discourage a person or group from attempting to remove Boardwalk GP as our general partner or otherwise change management. If any person or group other than our general partner and its affiliates acquires beneficial ownership of 20% or more of any class of units, that person or group loses voting rights on all of its units. This loss of voting rights does not apply to any person or group that acquires the units from our general partner or its affiliates and any transferees of that person or group approved by our general partner or to any person or group who acquires the units with the prior approval of the board of directors of our general partner.

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Our partnership agreement also provides that if our general partner is removed without cause and no units held by our general partner and its affiliates are voted in favor of that removal:

• the subordination period will end and all outstanding subordinated units will immediately convert into common units on a one-for-one basis;

• any existing arrearages in payment of the minimum quarterly distribution on the common units will be extinguished; and

• our general partner will have the right to convert its general partner interest and its incentive distribution rights into common units or to receive cash in exchange for those interests.

Call Rights

If at any time our general partner and its affiliates own more than 80% of the then-issued and outstanding partnership securities of any class, our general partner will have the right, which it may assign in whole or in part to any of its affiliates or to us, to acquire all, but not less than all, of the remaining partnership securities of the class held by unaffiliated persons.

The purchase price in the event of such an acquisition will be the greater of:

• the average of the daily closing prices of the partnership securities of such class over the 20 trading days preceding the date three days before the date the notice is mailed; and

• the highest price paid by our general partner or any of its affiliates for any partnership securities of the class purchased within the 90 days preceding the date on which our general partner first mails notice of its election to purchase those partnership securities.

In addition, if (a) our general partner receives an opinion of outside counsel to the effect that our being a pass-through entity for federal income tax purposes has or is reasonably likely to have a material adverse effect on the maximum applicable rates chargeable to customers by our subsidiaries that are regulated interstate natural gas pipelines and (b) at such time our general partner and its affiliates own more than 50% in the aggregate of the outstanding common units, subordinated units and other equity securities, then within 90 days of receiving such opinion our general partner will have the right, which it may assign to any of its affiliates or us, but not the obligation, to acquire all, but not less than all, of the equity securities units held by unaffiliated persons.

The purchase price in the event of such an acquisition will be equal to the average of the daily closing prices of the equity securities over the 180 days preceding the date three days before the date on which our general partner first mails notice of its election to purchase the equity securities.

The call rights are exercisable by our general partner, acting in its individual capacity, and may be assigned to its affiliates.

As a result of our general partner’s rights to purchase outstanding units, a holder of units may have his units purchased at an undesirable time or price. The tax consequences to a unitholder of the exercise of these call rights are the same as a sale by that unitholder of his common units in the market. Please read “Material Tax Consequences—Disposition of Common Units.”

Non-Taxpaying Assignees; Redemption

To avoid any adverse effect on the maximum applicable rates chargeable to customers by our subsidiaries that are regulated interstate natural gas pipelines, or in order to reverse an adverse determination that has occurred regarding such maximum rates, transferees (including purchasers from the underwriters in offerings)

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are required to fill out a properly completed transfer application certifying, and our general partner, acting on our behalf, may at any time require each unitholder to re-certify:

• that the transferee or unitholder is an individual or an entity subject to United States federal income taxation on the income generated by us; or

• that, if the transferee unitholder is an entity not subject to United States federal income taxation on the income generated by us, as in the case, for example, of a mutual fund taxed as a regulated investment company or a partnership, all the entity’s owners are subject to United States federal income taxation on the income generated by us.

This certification can be changed in any manner our general partner determines is necessary or appropriate to implement its original purpose.

If a unitholder:

• fails to furnish:

• a transfer application containing the required certification; or

• a re-certification containing the required certification within 30 days after request; or

• provides a false certification; then

we will have the right, which we may assign to any of our affiliates, to acquire all but not less than all of the units held by such unitholder. Further, the units will not be entitled to any allocations of income or loss, distributions or voting rights while held by such unitholder.

The purchase price in the event of such an acquisition for each unit held by such unitholder will be the lesser of:

• the price paid by such unitholder for the relevant unit; and

• the current market price as of the date three days before the date the notice is mailed.

The purchase price will be paid in cash or by delivery of a promissory note, as determined by our general partner. Any such promissory note will bear interest at the rate of 5% annually and be payable in three equal annual installments of principal and accrued interest, commencing one year after the redemption date.

Meetings; Voting

Except as described below regarding a person or group owning 20% or more of any class of units then outstanding, unitholders or assignees who are record holders of units on the record date will be entitled to notice of, and to vote at, meetings of our limited partners and to act upon matters for which approvals may be solicited. Common units that are owned by an assignee who is a record holder, but who has not yet been admitted as a limited partner, will be voted by our general partner at the written direction of the record holder. Absent direction of this kind, the common units will not be voted, except that, in the case of common units held by our general partner on behalf of assignees who are not Eligible Holders, our general partner will distribute the votes on those common units in the same ratios as the votes of limited partners on other units are cast.

Our general partner does not anticipate that any meeting of unitholders will be called in the foreseeable future. Any action that is required or permitted to be taken by the unitholders may be taken either at a meeting of the unitholders or without a meeting if consents in writing describing the action so taken are signed by holders of the number of units necessary to authorize or take that action at a meeting. Meetings of the unitholders may be called by our general partner or by unitholders owning at least 20% of the outstanding units of the class for which a meeting is proposed. Unitholders may vote either in person or by proxy at meetings. The holders of a majority of the outstanding units of the class or classes for which a meeting has been called, represented in person or by

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proxy, will constitute a quorum unless any action by the unitholders requires approval by holders of a greater percentage of the units, in which case the quorum will be the greater percentage. The unit equivalents representing the general partner interest are unit equivalents for distribution and allocation purposes, do not entitle our general partner to any vote other than its rights as general partner under our partnership agreement, will not be entitled to vote on any action required or permitted to be taken by the unitholders and will not count toward or be considered outstanding when calculating required votes, determining the presence of a quorum, or for similar purposes.

Each record holder of a unit has a vote according to his percentage interest in us, although additional limited partner interests having special voting rights could be issued. Please read “—Issuance of Additional Securities.” However, if at any time any person or group, other than our general partner and its affiliates, or a direct or subsequently approved transferee of our general partner or its affiliates, acquires, in the aggregate, beneficial ownership of 20% or more of any class of units then outstanding, that person or group will lose voting rights on all of its units and the units may not be voted on any matter and will not be considered to be outstanding when sending notices of a meeting of unitholders, calculating required votes, determining the presence of a quorum, or for other similar purposes. Common units held in nominee or street name account will be voted by the broker or other nominee in accordance with the instruction of the beneficial owner unless the arrangement between the beneficial owner and his nominee provides otherwise. Except as our partnership agreement otherwise provides, subordinated units will vote together with common units as a single class.

Any notice, demand, request, report, or proxy material required or permitted to be given or made to record holders of common units under our partnership agreement will be delivered to the record holder by us or by the transfer agent.

Status as Limited Partner or Assignee

Except as described above under “—Limited Liability,” the common units will be fully paid, and unitholders will not be required to make additional contributions.

An assignee of a common unit, after executing and delivering a transfer application, but pending his admission as a substituted limited partner, is entitled to an interest equivalent to that of a limited partner for the right to share in allocations and distributions from us, including liquidating distributions. Our general partner will vote and exercise other powers attributable to common units owned by an assignee that has not become a substituted limited partner at the written direction of the assignee. Please read “—Meetings; Voting.” Transferees who do not execute and deliver a transfer application and certification will not be treated as assignees or as record holders of common units, and will not receive cash distributions, federal income tax allocations, or reports furnished to holders of common units. Please read “Description of the Common Units—Transfer of Common Units.”

Indemnification

Under our partnership agreement we will indemnify the following persons in most circumstances, to the fullest extent permitted by law, from and against all losses, claims, damages, or similar events:

• our general partner;

• any departing general partner;

• any person who is or was an affiliate of our general partner or any departing general partner;

• any person who is or was an officer, director, member, partner, fiduciary or trustee of any entity described in the three foregoing bullets;

• any person who is or was serving as a director, officer, member, partner, fiduciary or trustee of another person at the request of our general partner or any departing general partner or any of their affiliates; or

• any person designated by our general partner.

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Any indemnification under these provisions will only be out of our assets. Unless it otherwise agrees, our general partner will not be personally liable for, or have any obligation to contribute or loan funds or assets to us to enable us to effectuate, indemnification. Our partnership agreement permits us to purchase insurance against liabilities asserted against and expenses incurred by persons for our activities, regardless of whether we would have the power to indemnify the person against liabilities under our partnership agreement.

Reimbursement of Expenses

Our partnership agreement requires us to reimburse our general partner for all direct and indirect expenses it incurs or payments it makes on our behalf and all other expenses allocable to us or otherwise incurred by our general partner in connection with operating our business, including overhead allocated to us by Loews. These expenses include salary, bonus, incentive compensation and other amounts paid to persons who perform services for us or on our behalf, and expenses allocated to our general partner by its affiliates. Our general partner is entitled to determine in good faith the expenses that are allocable to us.

Books and Reports

Our general partner is required to keep appropriate books of our business at our principal offices. The books are maintained for both tax and financial reporting purposes on an accrual basis. For tax and financial reporting purposes, our fiscal year is the calendar year.

We will furnish or make available (by posting on our website or other reasonable means) to record holders of common units, within 120 days after the close of each fiscal year, an annual report containing audited financial statements and a report on those financial statements by our independent public accountants. Except for our fourth quarter, we will also furnish or make available summary financial information within 90 days after the close of each quarter.

We will furnish each record holder of a unit with information reasonably required for tax reporting purposes within 90 days after the close of each calendar year. This information is expected to be furnished in summary form so that some complex calculations normally required of partners can be avoided. Our ability to furnish this summary information to unitholders will depend on the cooperation of unitholders in supplying us with specific information. Every unitholder will receive information to assist him in determining his federal and state tax liability and filing his federal and state income tax returns, regardless of whether he supplies us with information.

Right to Inspect Our Books and Records

Our partnership agreement provides that a limited partner can, for a purpose reasonably related to his interest as a limited partner, upon reasonable demand and at his own expense, have furnished to him:

• a current list of the name and last known address of each partner;

• a copy of our tax returns;

• information as to the amount of cash, and a description and statement of the agreed value of any other property or services, contributed or to be contributed by each partner and the date on which each became a partner;

• copies of our partnership agreement, the certificate of limited partnership of the partnership, related amendments and powers of attorney under which they have been executed;

• information regarding the status of our business and financial condition; and

• any other information regarding our affairs as is just and reasonable.

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Our general partner may, and intends to, keep confidential from the limited partners trade secrets or other information the disclosure of which our general partner believes in good faith is not in our best interests or that we are required by law or by agreements with third parties to keep confidential.

Registration Rights

Under our partnership agreement, we have agreed to register for resale under the Securities Act and applicable state securities laws any common units, subordinated units or other partnership securities proposed to be sold by our general partner or any of its affiliates or their assignees if an exemption from the registration requirements is not otherwise available. These registration rights continue for two years following any withdrawal or removal of Boardwalk GP as our general partner. We are obligated to pay all expenses incidental to the registration, excluding underwriting discounts and commissions.

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DESCRIPTION OF DEBT SECURITIES

The following description sets forth the general terms and provisions that apply to the debt securities. Each prospectus supplement will state the particular terms that will apply to the debt securities included in the supplement. The debt securities will be issued solely by Boardwalk Pipelines, LP, as the issuer. References in this “Description of the Debt Securities” to “us,” “we,” or “our” refer only to Boardwalk Pipelines, LP, as issuer, and not to Boardwalk Pipeline Partners, LP or to any of Boardwalk Pipelines’ subsidiaries. References in this “Description of the Debt Securities” to “the master partnership” or “the guarantor” refer only to Boardwalk Pipeline Partners, LP, and not to any of its subsidiaries.

We will issue debt securities under one or more indentures among us, as issuer, The Bank of New York Trust Company, N.A., as trustee, and, if applicable, the master partnership as guarantor. The debt securities will be governed by the provisions of the Indenture (as described below) and those made part of the Indenture by reference to the Trust Indenture Act of 1939. We, the Trustee and the guarantor, if applicable, may enter into supplements to the Indenture from time to time. If we decide to issue subordinated debt securities, we will issue them under a separate Indenture containing subordination provisions.

This description is a summary of the material provisions of the debt securities and the Indentures. We urge you to read the forms of senior indenture and subordinated indenture filed as exhibits to the registration statement of which this prospectus is a part because those indentures, and not this description, govern your rights as a holder of debt securities. References in this prospectus to an “Indenture” refer to the particular indenture under which we issue a series of debt securities.

General

Debt Securities

Any series of debt securities that we issue:

• will be our general obligations;

• will be general obligations of the master partnership, if it guarantees that series; and

• may be subordinated to our senior indebtedness, with any guarantees also being subordinated to any senior indebtedness.

The Indenture does not limit the total amount of debt securities that we may issue. We may issue debt securities under the Indenture from time to time in separate series, up to the aggregate amount authorized for each such series.

We will prepare a prospectus supplement and either an indenture supplement or a resolution of the board of directors of the master partnership’s general partner and accompanying officers’ certificate relating to any series of debt securities that we offer, which will include specific terms relating to some or all of the following:

• the form and title of the debt securities;

• the total principal amount of the debt securities;

• the date or dates on which the debt securities may be issued;

• the portion of the principal amount which will be payable if the maturity of the debt securities is accelerated;

• any right we may have to defer payments of interest by extending the dates payments are due and whether interest on those deferred amounts will be payable;

• the dates on which the principal and premium, if any, of the debt securities will be payable;

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• the interest rate which the debt securities will bear and the interest payment dates for the debt securities;

• any optional redemption provisions;

• any sinking fund or other provisions that would obligate us to repurchase or otherwise redeem the debt securities;

• whether the debt securities are entitled to the benefits of any guarantees by the master partnership;

• whether the debt securities may be issued in amounts other than $1,000 each or multiples thereof;

• any changes to or additional Events of Default or covenants;

• the subordination, if any, of the debt securities and any changes to the subordination provisions of the Indenture;

• the terms, if any, upon which the debt securities may be convertible into or exchanged for stock, other debt securities or other securities; and

• any other terms of the debt securities.

This description of debt securities will be deemed modified, amended or supplemented by any description of any series of debt securities set forth in a prospectus supplement related to that series.

The prospectus supplement will also describe any material United States federal income tax consequences or other special considerations regarding the applicable series of debt securities, including those relating to:

• debt securities with respect to which payments of principal, premium or interest are determined with reference to an index or formula, including changes in prices of particular securities, currencies or commodities;

• debt securities with respect to which principal, premium or interest is payable in a foreign or composite currency;

• debt securities that are issued at a discount below their stated principal amount, bearing no interest or interest at a rate that at the time of issuance is below market rates; and

• variable rate debt securities that are exchangeable for fixed rate debt securities.

At our option, we may make interest payments by check mailed to the registered holders of any debt securities not in global form or, if so stated in the applicable prospectus supplement, at the option of a holder by wire transfer to an account designated by the holder.

Unless otherwise provided in the applicable prospectus supplement, fully registered securities may be transferred or exchanged at the office of the Trustee at which its corporate trust business is principally administered in the United States, subject to the limitations provided in the Indenture, without the payment of any service charge, other than any applicable tax or governmental charge.

Any funds we pay to a paying agent for the payment of amounts due on any debt securities that remain unclaimed for two years will be returned to us, and the holders of the debt securities must look only to us for payment after that time.

The Guarantees

Our payment obligations under any series of debt securities may be jointly and severally, fully and unconditionally guaranteed by the master partnership. If a series of debt securities is so guaranteed, the master partnership will execute a notation of guarantee as further evidence of its guarantee. The applicable prospectus supplement will describe the terms of any guarantee by the master partnership.

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Any guarantee of the master partnership may be released under certain circumstances. If no default has occurred and is continuing under the Indenture, and to the extent not otherwise prohibited by the Indenture, the master partnership will be unconditionally released and discharged from the guarantee:

• automatically upon any sale, exchange or transfer, to any person that is not our affiliate, by the master partnership of all of direct or indirect equity interests in us; or

• automatically upon the merger of the master partnership into us or the liquidation and dissolution of the master partnership.

If a series of debt securities is guaranteed by the master partnership and is designated as subordinate to our senior indebtedness, then the guarantees by the master partnership will be subordinated to the senior indebtedness of the master partnership to substantially the same extent as the series is subordinated to our senior indebtedness. See “—Subordination.”

Covenants

Reports

The Indenture contains the following covenant for the benefit of the holders of all series of debt securities:

So long as any debt securities are outstanding, the master partnership will:

• for as long as it is required to file information with the SEC pursuant to the Securities Exchange Act of 1934, as amended (the “Exchange Act”), file with the Trustee, within 15 days after it is required to file with the SEC, copies of the annual report and of the information, documents and other reports which it is required to file with the SEC pursuant to the Exchange Act;

• if it is not required to file information with the SEC pursuant to the Exchange Act, file with the Trustee, within 15 days after it would have been required to file with the SEC, financial statements and a Management’s Discussion and Analysis of Financial Condition and Results of Operations, both comparable to what it would have been required to file with the SEC had it been subject to the reporting requirements of the Exchange Act; and

• if it is required to furnish annual or quarterly reports to our unitholders pursuant to the Exchange Act, file with the trustee any annual report or other reports sent to unitholders generally.

A series of debt securities may contain additional financial and other covenants. The applicable prospectus supplement will contain a description of any such covenants that are added to the Indenture specifically for the benefit of holders of a particular series.

Events of Default, Remedies and Notice

Events of Default

Each of the following events will be an “Event of Default” under the Indenture with respect to a series of debt securities:

• default in any payment of interest on any debt securities of that series when due that continues for 30 days;

• default in the payment of principal of or premium, if any, on any debt securities of that series when due at its stated maturity, upon redemption, upon required repurchase or otherwise;

• default in the payment of any sinking fund payment on any debt securities of that series when due;

• failure by us or, if the series of debt securities is guaranteed by the master partnership, by the guarantor, to comply for 60 days after notice with the other agreements contained in the Indenture, any supplement to the Indenture or any board resolution authorizing the issuance of that series; and

• certain events of bankruptcy, insolvency or reorganization of the issuer or, if applicable, the guarantor.

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Exercise of Remedies

If an Event of Default, other than an Event of Default described in the fifth bullet point above, occurs and is continuing, the Trustee or the holders of at least 25% in principal amount of the outstanding debt securities of that series may declare the entire principal of, premium, if any, and accrued and unpaid interest, if any, on all the debt securities of that series to be due and payable immediately.

A default under the fourth bullet point above will not constitute an Event of Default until the Trustee or the holders of 25% in principal amount of the outstanding debt securities of that series notify us and, if the series of debt securities is guaranteed by the guarantor, the guarantor, of the default and such default is not cured within 60 days after receipt of notice.

If an Event of Default described in the fifth bullet point above occurs and is continuing, the principal of, premium, if any, and accrued and unpaid interest on all outstanding debt securities of all series will become immediately due and payable without any declaration of acceleration or other act on the part of the Trustee or any holders.

The holders of a majority in principal amount of the outstanding debt securities of a series may:

• waive all past defaults, except with respect to nonpayment of principal, premium or interest; and

• rescind any declaration of acceleration by the Trustee or the holders with respect to the debt securities of that series, but only if:

• rescinding the declaration of acceleration would not conflict with any judgment or decree of a court of competent jurisdiction; and

• all existing Events of Default have been cured or waived, other than the nonpayment of principal, premium, if any, or interest on the debt securities of that series that have become due solely by the declaration of acceleration.

If an Event of Default occurs and is continuing, the Trustee will be under no obligation, except as otherwise provided in the Indenture, to exercise any of the rights or powers under the Indenture at the request or direction of any of the holders unless such holders have offered to the Trustee reasonable indemnity or security against any costs, liability or expense. No holder may pursue any remedy with respect to the Indenture or the debt securities of any series, except to enforce the right to receive payment of principal, premium, if any, or interest when due, unless:

• such holder has previously given the Trustee notice that an Event of Default with respect to that series is continuing;

• holders of at least 25% in principal amount of the outstanding debt securities of that series have requested that the Trustee pursue the remedy;

• such holders have offered the Trustee reasonable indemnity or security against any cost, liability or expense;

• the Trustee has not complied with such request within 60 days after the receipt of the request and the offer of indemnity or security; and

• the holders of a majority in principal amount of the outstanding debt securities of that series have not given the Trustee a direction that, in the opinion of the trustee, is inconsistent with such request within such 60-day period.

The holders of a majority in principal amount of the outstanding debt securities of a series have the right, subject to certain restrictions, to direct the time, method and place of conducting any proceeding for any remedy available to the Trustee or of exercising any right or power conferred on the trustee with respect to that series of debt securities. The Trustee, however, may refuse to follow any direction that:

• conflicts with law;

• is inconsistent with any provision of the Indenture;

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• the Trustee determines is unduly prejudicial to the rights of any other holder; or

• would involve the Trustee in personal liability.

Notice of Event of Default

Within 30 days after the occurrence of an Event of Default, we are required to give written notice to the Trustee and indicate the status of the default and what action we are taking or propose to take to cure the default. In addition, we are required to deliver to the Trustee, within 120 days after the end of each fiscal year, a compliance certificate indicating that we have complied with all covenants contained in the Indenture or whether any default or Event of Default has occurred during the previous year.

If an Event of Default occurs and is continuing and is known to the Trustee, the Trustee must mail to each holder a notice of the Event of Default by the later of 90 days after the Event of Default occurs or 30 days after the Trustee knows of the Event of Default. Except in the case of a default in the payment of principal, premium, if any, or interest with respect to any debt securities, the Trustee may withhold such notice, but only if and so long as the board of directors, the executive committee or a committee of directors or responsible officers of the Trustee in good faith determines that withholding such notice is in the interests of the holders.

Amendments and Waivers

The issuer may amend the Indenture without the consent of any holder of debt securities to:

• cure any ambiguity, omission, defect or inconsistency;

• convey, transfer, assign, mortgage or pledge any property to or with the Trustee;

• provide for the assumption by a successor of our obligations under the Indenture;

• add subsidiary guarantors with respect to the debt securities;

• change or eliminate any restriction on the payment of principal of, or premium, if any, on any debt securities;

• secure the debt securities;

• add covenants for the benefit of the holders or surrender any right or power conferred upon the issuer;

• make any change that does not adversely affect the rights under the Indenture of any holder;

• add or appoint a successor or separate Trustee;

• comply with any requirement of the SEC in connection with the qualification of the Indenture under the Trust Indenture Act of 1939; or

• establish the form or terms of any new series of debt securities.

In addition, the issuer may amend the Indenture if the holders of a majority in principal amount of all debt securities of each series that would be affected then outstanding under the Indenture consent to it. The issuer may not, however, without the consent of each holder of outstanding debt securities of each series that would be affected, amend the Indenture to:

• reduce the percentage in principal amount of debt securities of any series whose holders must consent to an amendment;

• reduce the rate of or extend the time for payment of interest on any debt securities;

• reduce the principal of or extend the stated maturity of any debt securities;

• reduce any premium payable upon the redemption of any debt securities or change the time at which any debt securities may or shall be redeemed;

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• make any debt securities payable in other than U.S. dollars;

• impair the right of any holder to receive payment of premium, if any, principal or interest with respect to such holder’s debt securities on or after the applicable due date;

• impair the right of any holder to institute suit for the enforcement of any payment with respect to such holder’s debt securities;

• release any security that has been granted in respect of the debt securities, other than in accordance with the Indenture;

• make any change in the amendment provisions which require each holder’s consent;

• make any change in the waiver provisions; or

• release the guarantor or a subsidiary guarantor or modify the guarantor’s or such subsidiary guarantor’s guarantee in any manner adverse to the holders.

The consent of the holders is not necessary under the Indenture to approve the particular form of any proposed amendment. It is sufficient if such consent approves the substance of the proposed amendment. After an amendment under the Indenture requiring the consent of the holders of any series of debt securities becomes effective, the issuer is required to mail to all holders a notice briefly describing the amendment with respect to other holders. The failure to give, or any defect in, such notice to any holder, however, will not impair or affect the validity of the amendment with respect to other holders.

The holders of a majority in aggregate principal amount of the outstanding debt securities of each affected series, on behalf of all such holders, and subject to certain rights of the Trustee, may waive:

• compliance by the issuer, the guarantor or a subsidiary guarantor with certain restrictive provisions of the Indenture; and

• any past default under the Indenture, subject to certain rights of the Trustee under the Indenture;

except that such majority of holders may not waive a default:

• in the payment of principal, premium, if any, or interest; or

• in respect of a provision that under the Indenture cannot be amended

without the consent of all holders of the series of debt securities that is affected.

Defeasance

At any time, the issuer may terminate, with respect to debt securities of a particular series, all its obligations under such series of debt securities and the Indenture, which we call a “legal defeasance.” If the issuer decides to make a legal defeasance, however, the issuer may not terminate its obligations:

• relating to the defeasance trust;

• to register the transfer or exchange of the debt securities of that series;

• to replace mutilated, destroyed, lost or stolen debt securities of that series; or

• to maintain a registrar and paying agent in respect of the debt securities of that series.

If the issuer exercises its legal defeasance option, any guarantee will terminate with respect to that series of debt securities.

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At any time the issuer may also effect a “covenant defeasance,” which means it has elected to terminate its obligations under:

• covenants applicable to a series of debt securities and described in the prospectus supplement applicable to such series, other than as described in such prospectus supplement;

• the guarantee provision described under “Events of Default” above with respect to a series of debt securities.

The legal defeasance option may be exercised notwithstanding a prior exercise of the covenant defeasance option. If the legal defeasance option is exercised, payment of the affected series of debt securities may not be accelerated because of an event of default with respect to that series. If the covenant defeasance option is exercised, payment of the affected series of debt securities may not be accelerated because of an Event of Default specified in the fourth or fifth (with respect only to the guarantor or a subsidiary guarantor (if any) bullet points under “Events of Default” above or an Event of Default that is added specifically for such series and described in a prospectus supplement.

In order to exercise either defeasance option, the issuer must:

• irrevocably deposit in trust with the Trustee money or certain U.S. government obligations for the payment of principal, premium, if any, and interest on the series of debt securities to redemption or maturity, as the case may be;

• comply with certain other conditions, including that no default has occurred and is continuing after the deposit in trust; and

• deliver to the Trustee an opinion of counsel to the effect that holders of the series of debt securities will not recognize income, gain or loss for federal income tax purposes as a result of such defeasance and will be subject to federal income tax on the same amount and in the same manner and at the same times as would have been the case if such deposit and defeasance had not occurred. In the case of legal defeasance only, such opinion of counsel must be based on a ruling of the Internal Revenue Service or other change in applicable federal income tax law.

Subordination

Debt securities of a series may be subordinated to our “Senior Indebtedness,” which we define generally to include any obligation created or assumed by us (or, if the series is guaranteed, the guarantor or subsidiary guarantor) for the repayment of borrowed money and any guarantee therefor, whether outstanding or hereafter issued, unless, by the terms of the instrument creating or evidencing such obligation, it is provided that such obligation is subordinate or not superior in right of payment to the debt securities (or, if the series is guaranteed, the guarantee of the guarantor or subsidiary guarantor), or to other obligations which are pari passu with or subordinated to the debt securities (or, if the series is guaranteed, the guarantee of the guarantor or subsidiary guarantor). Subordinated debt securities will be subordinate in right of payment, to the extent and in the manner set forth in the Indenture and the prospectus supplement relating to such series, to the prior payment of all of our indebtedness and that of the guarantor or subsidiary guarantor, if applicable, that is designated as “Senior Indebtedness” with respect to the series.

The holders of our Senior Indebtedness or, if applicable, of the Senior Indebtedness of the guarantor or subsidiary guarantor, will receive payment in full of the Senior Indebtedness before holders of subordinated debt securities will receive any payment of principal, premium, if any, or interest with respect to the subordinated debt securities upon any payment or distribution of our assets or, if applicable to any series of outstanding debt securities, the guarantor’s or subsidiary guarantor’s assets, to creditors:

• upon a liquidation or dissolution of us or, if applicable to any series of outstanding debt securities, the guarantor or subsidiary guarantor; or

• in a bankruptcy, receivership or similar proceeding relating to us or, if applicable to any series of outstanding debt securities, to the guarantor or subsidiary guarantor.

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Until the Senior Indebtedness is paid in full, any distribution to which holders of subordinated debt securities would otherwise be entitled will be made to the holders of Senior Indebtedness, except that the holders of subordinated debt securities may receive units representing limited partner interests in us and any debt securities that are subordinated to Senior Indebtedness to at least the same extent as the subordinated debt securities.

If the issuer does not pay any principal, premium, if any, or interest with respect to Senior Indebtedness within any applicable grace period (including at maturity), or any other default on Senior Indebtedness occurs and the maturity of the Senior Indebtedness is accelerated in accordance with its terms, the issuer may not:

• make any payments of principal, premium, if any, or interest with respect to subordinated debt securities;

• make any deposit for the purpose of defeasance of the subordinated debt securities; or

• repurchase, redeem or otherwise retire any subordinated debt securities, except that in the case of subordinated debt securities that provide for a mandatory sinking fund, we may deliver subordinated debt securities to the Trustee in satisfaction of our sinking fund obligation,

unless, in either case,

• the default has been cured or waived and any declaration of acceleration has been rescinded;

• the Senior Indebtedness has been paid in full in cash; or

• the issuer and the Trustee receive written notice approving the payment from the representatives of each issue of “Designated Senior Indebtedness.”

Generally, “Designated Senior Indebtedness” will include:

• any specified issue of Senior Indebtedness of at least $100 million; and

• any other Senior Indebtedness that we may designate in respect of any series of subordinated debt securities.

During the continuance of any default, other than a default described in the immediately preceding paragraph, that may cause the maturity of any Designated Senior Indebtedness to be accelerated immediately without further notice, other than any notice required to effect such acceleration, or the expiration of any applicable grace periods, the issuer may not pay the subordinated debt securities for a period called the “Payment Blockage Period.” A Payment Blockage Period will commence on the receipt by us and the Trustee of written notice of the default, called a “Blockage Notice,” from the representative of any Designated Senior Indebtedness specifying an election to effect a Payment Blockage Period and will end 179 days thereafter.

The Payment Blockage Period may be terminated before its expiration:

• by written notice from the person or persons who gave the Blockage Notice;

• by repayment in full in cash of the Designated Senior Indebtedness with respect to which the Blockage Notice was given; or

• if the default giving rise to the Payment Blockage Period is no longer continuing.

Unless the holders of the Designated Senior Indebtedness have accelerated the maturity of the Designated Senior Indebtedness, the issuer may resume payments on the subordinated debt securities after the expiration of the Payment Blockage Period.

Generally, not more than one Blockage Notice may be given in any period of 360 consecutive days. The total number of days during which any one or more Payment Blockage Periods are in effect, however, may not exceed an aggregate of 179 days during any period of 360 consecutive days.

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After all Senior Indebtedness is paid in full and until the subordinated debt securities are paid in full, holders of the subordinated debt securities shall be subrogated to the rights of holders of Senior Indebtedness to receive distributions applicable to Senior Indebtedness.

As a result of the subordination provisions described above, in the event of insolvency, the holders of Senior Indebtedness, as well as certain of the issuer’s general creditors, may recover more, ratably, than the holders of the subordinated debt securities.

No Personal Liability of General Partner

Our general partner and its directors, officers, employees, incorporators and equity owners, as such, will not be liable for:

• any of our obligations or the obligations of the guarantor or the subsidiary guarantors under the debt securities or the indentures; or

• any claim based on, in respect of, or by reason of, such obligations or their creation.

By accepting a debt security, each holder will be deemed to have waived and released all such liability. This waiver and release are part of the consideration for our issuance of the debt securities. This waiver may not be effective, however, to waive liabilities under the federal securities laws and it is the view of the SEC that such a waiver is against public policy.

Book Entry, Delivery and Form

A series of debt securities may be issued in the form of one or more global certificates deposited with a depositary. We expect that The Depository Trust Company, New York, New York, or “DTC,” will act as depositary. If a series of debt securities is issued in book-entry form, one or more global certificates will be issued and deposited with or on behalf of DTC and physical certificates will not be issued to each holder. A global security may not be transferred unless it is exchanged in whole or in part for a certificated security, except that DTC, its nominees and their successors may transfer a global security as a whole to one another.

DTC will keep a computerized record of its participants, such as a broker, whose clients have purchased the debt securities. The participants will then keep records of their clients who purchased the debt securities. Beneficial interests in global securities will be shown on, and transfers of beneficial interests in global securities will be made only through, records maintained by DTC and its participants.

DTC advises us that it is:

• a limited-purpose trust company organized under the New York Banking Law;

• a “banking organization” within the meaning of the New York Banking Law;

• a member of the United States Federal Reserve System;

• a “clearing corporation” within the meaning of the New York Uniform Commercial Code; and

• a “clearing agency” registered under the provisions of Section 17A of the Exchange Act.

DTC is owned by a number of its participants and by the New York Stock Exchange, Inc., The American Stock Exchange, Inc. and the National Association of Securities Dealers, Inc. The rules that apply to DTC and its participants are on file with the SEC.

DTC holds securities that its participants deposit with DTC. DTC also records the settlement among participants of securities transactions, such as transfers and pledges, in deposited securities through computerized records for participants’ accounts. This eliminates the need to exchange certificates. Participants include securities brokers and dealers, banks, trust companies, clearing corporations and certain other organizations.

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Principal, premium, if any, and interest payments due on the global securities will be wired to DTC’s nominee. The issuer, any guarantor, the Trustee and any paying agent will treat DTC’s nominee as the owner of the global securities for all purposes. Accordingly, the issuer, the trustee and any paying agent will have no direct responsibility or liability to pay amounts due on the global securities to owners of beneficial interests in the global securities.

It is DTC’s current practice, upon receipt of any payment of principal, premium, if any, or interest, to credit participants’ accounts on the payment date according to their respective holdings of beneficial interests in the global securities as shown on DTC’s records. In addition, it is DTC’s current practice to assign any consenting or voting rights to participants, whose accounts are credited with debt securities on a record date, by using an omnibus proxy.

Payments by participants to owners of beneficial interests in the global securities, as well as voting by participants, will be governed by the customary practices between the participants and the owners of beneficial interests, as is the case with debt securities held for the account of customers registered in “street name.” Payments to holders of beneficial interests are the responsibility of the participants and not of DTC, the Trustee, any guarantor or us.

Beneficial interests in global securities will be exchangeable for certificated securities with the same terms in authorized denominations only if:

• DTC notifies the issuer that it is unwilling or unable to continue as depositary or if DTC ceases to be a clearing agency registered under applicable law and a successor depositary is not appointed by the issuer within 90 days; or

• the issuer determines not to require all of the debt securities of a series to be represented by a global security and notifies the trustee of the decision.

The Trustee

A separate trustee may be appointed for any series of debt securities. We use the term “Trustee” to refer to the trustee appointed with respect to any such series of debt securities. We may maintain banking and other commercial relationships with the Trustee and its affiliates in the ordinary course of business, and the Trustee may own debt securities.

Governing Law

The Indenture and the debt securities will be governed by, and construed in accordance with, the laws of the State of New York.

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MATERIAL TAX CONSEQUENCES

This section is a summary of the material tax considerations that may be relevant to prospective unitholders who are individual citizens or residents of the United States and, unless otherwise noted in the following discussion, is the opinion of Vinson & Elkins L.L.P., counsel to our general partner and us, insofar as it relates to matters of U.S. federal income tax law and legal conclusions with respect to those matters. This section is based upon current provisions of the Internal Revenue Code, existing and proposed regulations and current administrative rulings and court decisions, all of which are subject to change. Later changes in these authorities may cause the tax consequences to vary substantially from the consequences described below.

The following discussion does not comment on all federal income tax matters affecting us or the unitholders. Moreover, the discussion focuses on unitholders who are individual citizens or residents of the United States and has only limited application to corporations, estates, trusts, nonresident aliens or other unitholders subject to specialized tax treatment, such as tax-exempt institutions, foreign persons, IRAs, real estate investment trusts (REITs) or mutual funds. Accordingly, we urge each prospective unitholder to consult, and depend on, his own tax advisor in analyzing the federal, state, local and foreign tax consequences particular to him of the ownership or disposition of common units.

All statements as to matters of law and legal conclusions, but not as to factual matters, contained in this section, unless otherwise noted, are the opinion of Vinson & Elkins L.L.P. and are based on the accuracy of the representations made by us.

The IRS has made no determination regarding any matter affecting us or prospective unitholders. Instead, we will rely on opinions of Vinson & Elkins L.L.P. Unlike a ruling, an opinion of counsel represents only that counsel’s best legal judgment and does not bind the IRS or the courts. Accordingly, the opinions and statements made herein may not be sustained by a court if contested by the IRS. Any contest of this sort with the IRS may materially and adversely impact the market for the common units and the prices at which common units trade. In addition, the costs of any contest with the IRS, principally legal, accounting and related fees, will result in a reduction in cash available for distribution to our unitholders and our general partner and thus will be borne indirectly by our unitholders and our general partner. Furthermore, the tax treatment of us, or of an investment in us, may be significantly modified by future legislative or administrative changes or court decisions. Any modifications may or may not be retroactively applied.

For the reasons described below, Vinson & Elkins L.L.P. has not rendered an opinion with respect to the following specific federal income tax issues: (1) the treatment of a unitholder whose common units are loaned to a short seller to cover a short sale of common units (please read “—Tax Consequences of Unit Ownership—Treatment of Short Sales”); (2) whether our monthly convention for allocating taxable income and losses is permitted by existing Treasury Regulations (please read “—Disposition of Common Units—Allocations Between Transferors and Transferees”); and (3) whether our method for depreciating Section 743 adjustments is sustainable in certain cases (please read “—Tax Consequences of Unit Ownership—Section 754 Election”).

Partnership Status

A partnership is not a taxable entity and incurs no federal income tax liability. Instead, each partner of a partnership is required to take into account his share of items of income, gain, loss and deduction of the partnership in computing his federal income tax liability, regardless of whether cash distributions are made to him by the partnership. Distributions by a partnership to a partner are generally not taxable unless the amount of cash distributed is in excess of the partner’s adjusted basis in his partnership interest.

Section 7704 of the Internal Revenue Code provides that publicly traded partnerships will, as a general rule, be taxed as corporations. However, an exception, referred to as the “Qualifying Income Exception,” exists with respect to publicly traded partnerships of which 90% or more of the gross income for every taxable year consists of “qualifying income.” Qualifying income includes income and gains derived from the transportation, storage and marketing of crude oil, natural gas and products thereof. Other types of qualifying income include interest

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(other than from a financial business), dividends, gains from the sale of real property and gains from the sale or other disposition of capital assets held for the production of income that otherwise constitutes qualifying income. We estimate that less than 3% of our current gross income is not qualifying income; however, this estimate could change from time to time. Based upon and subject to this estimate, the factual representations made by us and our general partner and a review of the applicable legal authorities, Vinson & Elkins L.L.P. is of the opinion that at least 90% of our current gross income constitutes qualifying income.

The IRS has made no determination as to our status or the status of the operating partnership for federal income tax purposes or whether our operations generate “qualifying income” under Section 7704 of the Internal Revenue Code. Instead, we will rely on the opinion of Vinson & Elkins L.L.P. on such matters. It is the opinion of Vinson & Elkins L.L.P. that, based upon the Internal Revenue Code, its regulations, published revenue rulings and court decisions and the representations described below, we will be classified as a partnership and our operating partnership will be disregarded as an entity separate from us for federal income tax purposes.

In rendering its opinion, Vinson & Elkins L.L.P. has relied on factual representations made by us and our general partner. The representations made by us and our general partner upon which Vinson & Elkins L.L.P. has relied are:

• neither we nor our operating partnership will elect to be treated as a corporation; and

• for each taxable year, more than 90% of our gross income will be income that Vinson & Elkins L.L.P. has opined or will opine is “qualifying income” within the meaning of Section 7704(d) of the Internal Revenue Code.

If we fail to meet the Qualifying Income Exception, other than a failure that is determined by the IRS to be inadvertent and that is cured within a reasonable time after discovery, in which case the IRS may also require us to make adjustments with respect to our unitholders or pay other amounts, we will be treated as if we had transferred all of our assets, subject to liabilities, to a newly formed corporation, on the first day of the year in which we fail to meet the Qualifying Income Exception, in return for stock in that corporation, and then distributed that stock to the unitholders in liquidation of their interests in us. This contribution and liquidation should be tax-free to unitholders and us so long as we, at that time, do not have liabilities in excess of the tax basis of our assets. Thereafter, we would be treated as a corporation for federal income tax purposes.

If we were taxable as a corporation in any taxable year, either as a result of a failure to meet the Qualifying Income Exception or otherwise, our items of income, gain, loss and deduction would be reflected only on our tax return rather than being passed through to the unitholders, and our net income would be taxed to us at corporate rates. In addition, any distribution made to a unitholder would be treated as either taxable dividend income, to the extent of our current or accumulated earnings and profits, or, in the absence of earnings and profits, a nontaxable return of capital, to the extent of the unitholder’s tax basis in his common units, or taxable capital gain, after the unitholder’s tax basis in his common units is reduced to zero. Accordingly, taxation as a corporation would result in a material reduction in a unitholder’s cash flow and after-tax return and thus would likely result in a substantial reduction of the value of the units.

The discussion below is based on Vinson & Elkins L.L.P.’s opinion that we will be classified as a partnership for federal income tax purposes.

Limited Partner Status

Unitholders who have become limited partners of Boardwalk Pipeline Partners, LP will be treated as partners of Boardwalk Pipeline Partners, LP for federal income tax purposes. Also:

• assignees who have executed and delivered transfer applications, and are awaiting admission as limited partners, and

• unitholders whose common units are held in street name or by a nominee and who have the right to direct the nominee in the exercise of all substantive rights attendant to the ownership of their common units

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will be treated as partners of Boardwalk Pipeline Partners, LP for federal income tax purposes. As there is no direct or indirect controlling authority addressing assignees of common units who are entitled to execute and deliver transfer applications and thereby become entitled to direct the exercise of attendant rights, but who fail to execute and deliver transfer applications, Vinson & Elkins L.L.P.’s opinion does not extend to these persons. Furthermore, a purchaser or other transferee of common units who does not execute and deliver a transfer application may not receive some federal income tax information or reports furnished to record holders of common units unless the common units are held in a nominee or street name account and the nominee or broker has executed and delivered a transfer application for those common units.

A beneficial owner of common units whose units have been transferred to a short seller to complete a short sale would appear to lose his status as a partner with respect to those units for federal income tax purposes. Please read “—Tax Consequences of Unit Ownership—Treatment of Short Sales.”

Income, gain, deductions or losses would not appear to be reportable by a unitholder who is not a partner for federal income tax purposes, and any cash distributions received by a unitholder who is not a partner for federal income tax purposes would therefore appear to be fully taxable as ordinary income. These holders are urged to consult their own tax advisors with respect to their status as partners in Boardwalk Pipeline Partners, LP for federal income tax purposes.

Tax Consequences of Unit Ownership

Flow Through of Taxable Income

We will not pay any federal income tax. Instead, each unitholder will be required to report on his income tax return his share of our income, gains, losses and deductions without regard to whether corresponding cash distributions are received by him. Consequently, we may allocate income to a unitholder even if he has not received a cash distribution. Each unitholder will be required to include in income his allocable share of our income, gains, losses and deductions for our taxable year ending with or within his taxable year. Our taxable year ends on December 31.

Treatment of Distributions

Distributions by us to a unitholder generally will not be taxable to the unitholder for federal income tax purposes to the extent of his tax basis in his common units immediately before the distribution. Our cash distributions in excess of a unitholder’s tax basis generally will be considered to be gain from the sale or exchange of the common units, taxable in accordance with the rules described under “—Disposition of Common Units” below. Any reduction in a unitholder’s share of our liabilities for which no partner, including our general partner, bears the economic risk of loss, known as “nonrecourse liabilities,” will be treated as a distribution of cash to that unitholder. To the extent our distributions cause a unitholder’s “at risk” amount to be less than zero at the end of any taxable year, he must recapture any losses deducted in previous years. Please read “—Limitations on Deductibility of Losses.”

A decrease in a unitholder’s percentage interest in us because of our issuance of additional common units will decrease his share of our nonrecourse liabilities, and thus will result in a corresponding deemed distribution of cash. A non-pro rata distribution of money or property may result in ordinary income to a unitholder, regardless of his tax basis in his common units, if the distribution reduces the unitholder’s share of our “unrealized receivables,” including depreciation recapture, and/or substantially appreciated “inventory items,” both as defined in the Internal Revenue Code, and collectively, “Section 751 Assets.” To that extent, he will be treated as having been distributed his proportionate share of the Section 751 Assets and having exchanged those assets with us in return for the non-pro rata portion of the actual distribution made to him. This latter deemed exchange will generally result in the unitholder’s realization of ordinary income, which will equal the excess of (1) the non-pro rata portion of that distribution over (2) the unitholder’s tax basis for the share of Section 751 Assets deemed relinquished in the exchange.

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Basis of Common Units

A unitholder’s initial tax basis for his common units will be the amount he paid for the common units plus his share of our nonrecourse liabilities. That basis will be increased by his share of our income and by any increases in his share of our nonrecourse liabilities. That basis will be decreased, but not below zero, by distributions from us, by the unitholder’s share of our losses, by any decreases in his share of our nonrecourse liabilities and by his share of our expenditures that are not deductible in computing taxable income and are not required to be capitalized. A unitholder will have no share of our debt that is recourse to our general partner, but will have a share, generally based on his share of profits, of our nonrecourse liabilities. Please read “—Disposition of Common Units—Recognition of Gain or Loss.”

Limitations on Deductibility of Losses

The deduction by a unitholder of his share of our losses will be limited to the tax basis in his units and, in the case of an individual unitholder or a corporate unitholder, if more than 50% of the value of the corporate unitholder’s stock is owned directly or indirectly by five or fewer individuals or some tax-exempt organizations, to the amount for which the unitholder is considered to be “at risk” with respect to our activities, if that is less than his tax basis. A unitholder must recapture losses deducted in previous years to the extent that distributions cause his at risk amount to be less than zero at the end of any taxable year. Losses disallowed to a unitholder or recaptured as a result of these limitations will carry forward and will be allowable to the extent that his tax basis or at risk amount, whichever is the limiting factor, is subsequently increased. Upon the taxable disposition of a unit, any gain recognized by a unitholder can be offset by losses that were previously suspended by the at risk limitation but may not be offset by losses suspended by the basis limitation. Any excess loss above that gain previously suspended by the at risk or basis limitations is no longer utilizable.

In general, a unitholder will be at risk to the extent of the tax basis of his units, excluding any portion of that basis attributable to his share of our nonrecourse liabilities, reduced by any amount of money he borrows to acquire or hold his units, if the lender of those borrowed funds owns an interest in us, is related to the unitholder or can look only to the units for repayment. A unitholder’s at risk amount will increase or decrease as the tax basis of the unitholder’s units increases or decreases, other than tax basis increases or decreases attributable to increases or decreases in his share of our nonrecourse liabilities.

The passive loss limitations generally provide that individuals, estates, trusts and some closely-held corporations and personal service corporations can deduct losses from passive activities, which are generally trade or business activities in which the taxpayer does not materially participate, only to the extent of the taxpayer’s income from those passive activities. The passive loss limitations are applied separately with respect to each publicly traded partnership. Consequently, any passive losses we generate will only be available to offset our passive income generated in the future and will not be available to offset income from other passive activities or investments, including our investments or investments in other publicly traded partnerships, or salary or active business income. Passive losses that are not deductible because they exceed a unitholder’s share of income we generate may be deducted in full when he disposes of his entire investment in us in a fully taxable transaction with an unrelated party. The passive loss limitations are applied after other applicable limitations on deductions, including the at risk rules and the basis limitation.

A unitholder’s share of our net income may be offset by any of our suspended passive losses, but it may not be offset by any other current or carryover losses from other passive activities, including those attributable to other publicly traded partnerships.

Limitations on Interest Deductions

The deductibility of a non-corporate taxpayer’s “investment interest expense” is generally limited to the amount of that taxpayer’s “net investment income.” Investment interest expense includes:

• interest on indebtedness properly allocable to property held for investment;

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• our interest expense attributed to portfolio income; and

• the portion of interest expense incurred to purchase or carry an interest in a passive activity to the extent attributable to portfolio income.

The computation of a unitholder’s investment interest expense will take into account interest on any margin account borrowing or other loan incurred to purchase or carry a unit. Net investment income includes gross income from property held for investment and amounts treated as portfolio income under the passive loss rules, less deductible expenses, other than interest, directly connected with the production of investment income, but generally does not include gains attributable to the disposition of property held for investment. The IRS has indicated that net passive income earned by a publicly traded partnership will be treated as investment income to its unitholders. In addition, the unitholder’s share of our portfolio income will be treated as investment income.

Entity-Level Collections

If we are required or elect under applicable law to pay any federal, state, local or foreign income tax on behalf of any unitholder or our general partner or any former unitholder, we are authorized to pay those taxes from our funds. That payment, if made, will be treated as a distribution of cash to the partner on whose behalf the payment was made. If the payment is made on behalf of a person whose identity cannot be determined, we are authorized to treat the payment as a distribution to all current unitholders. We are authorized to amend our partnership agreement in the manner necessary to maintain uniformity of intrinsic tax characteristics of units and to adjust later distributions, so that after giving effect to these distributions, the priority and characterization of distributions otherwise applicable under our partnership agreement is maintained as nearly as is practicable. Payments by us as described above could give rise to an overpayment of tax on behalf of an individual partner in which event the partner would be required to file a claim in order to obtain a credit or refund.

Allocation of Income, Gain, Loss and Deduction

In general, if we have a net profit, our items of income, gain, loss and deduction will be allocated among our general partner and the unitholders in accordance with their percentage interests in us. At any time that distributions are made to the common units in excess of distributions to the subordinated units, or incentive distributions are made to our general partner, gross income will be allocated to the recipients to the extent of these distributions. If we have a net loss for the entire year, that loss will be allocated first to our general partner and the unitholders in accordance with their percentage interests in us to the extent of their positive capital accounts and, second, to our general partner.

Specified items of our income, gain, loss and deduction will be allocated to account for the difference between the tax basis and fair market value of our assets at the time of an offering referred to in this discussion as “Contributed Property.” The effect of these allocations to a unitholder purchasing common units in this offering will be essentially the same as if the tax basis of our assets were equal to their fair market value at the time of this offering. In addition, items of recapture income will be allocated to the extent possible to the partner who was allocated the deduction giving rise to the treatment of that gain as recapture income in order to minimize the recognition of ordinary income by some unitholders. Finally, although we do not expect that our operations will result in the creation of negative capital accounts, if negative capital accounts nevertheless result, items of our income and gain will be allocated in an amount and manner to eliminate the negative balance as quickly as possible.

An allocation of items of our income, gain, loss or deduction, other than an allocation required by the Internal Revenue Code to eliminate the difference between a partner’s “book” capital account, credited with the fair market value of Contributed Property, and “tax” capital account, credited with the tax basis of Contributed Property, referred to in this discussion as the “Book-Tax Disparity,” will generally be given effect for federal income tax purposes in determining a partner’s share of an item of income, gain, loss or deduction only if the

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allocation has substantial economic effect. In any other case, a partner’s share of an item will be determined on the basis of his interest in us, which will be determined by taking into account all the facts and circumstances, including:

• his relative contributions to us;

• the interests of all the partners in profits and losses;

• the interest of all the partners in cash flow; and

• the rights of all the partners to distributions of capital upon liquidation.

Vinson & Elkins L.L.P. is of the opinion that, with the exception of the issues described in “—Section 754 Election” and “—Disposition of Common Units—Allocations Between Transferors and Transferees,” allocations under our partnership agreement will be given effect for federal income tax purposes in determining a partner’s share of an item of income, gain, loss or deduction.

Treatment of Short Sales

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, he 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. As a result, during this period:

• any of our income, gain, loss or deduction with respect to those units would not be reportable by the unitholder;

• any cash distributions received by the unitholder as to those units would be fully taxable; and

• all of these distributions would appear to be ordinary income.

Vinson & Elkins L.L.P. has not rendered an opinion regarding the treatment of a unitholder where common units are loaned to a short seller to cover a short sale of common units; therefore, 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. The IRS has announced that it is actively studying issues relating to the tax treatment of short sales of partnership interests. Please also read “—Disposition of Common Units—Recognition of Gain or Loss.”

Alternative Minimum Tax

Each unitholder will be required to take into account his distributive share of any items of our income, gain, loss or deduction for purposes of the alternative minimum tax. The current minimum tax rate for noncorporate taxpayers is 26% on the first $175,000 of alternative minimum taxable income in excess of the exemption amount and 28% on any additional alternative minimum taxable income. Prospective unitholders are urged to consult with their tax advisors as to the impact of an investment in units on their liability for the alternative minimum tax.

Tax Rates

In general, the highest effective U.S. federal income tax rate for individuals is currently 35.0% and the maximum U.S. federal income tax rate for net capital gains of an individual is currently 15.0% if the asset disposed of was held for more than twelve months at the time of disposition.

Section 754 Election

We have made the election permitted by Section 754 of the Internal Revenue Code. That election is irrevocable without the consent of the IRS. The election will generally permit us to adjust a common unit

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purchaser’s tax basis in our assets (“inside basis”) under Section 743(b) of the Internal Revenue Code to reflect his purchase price. This election does not apply to a person who purchases common units directly from us. The Section 743(b) adjustment belongs to the purchaser and not to other unitholders. For purposes of this discussion, a unitholder’s inside basis in our assets will be considered to have two components: (1) his share of our tax basis in our assets (“common basis”) and (2) his Section 743(b) adjustment to that basis.

Where the remedial allocation method is adopted (which we have adopted and will adopt, except as otherwise determined by our general partner with respect to certain goodwill properties), the Treasury Regulations under Section 743 of the Internal Revenue Code require a portion of the Section 743(b) adjustment that is attributable to recovery property under section 168 of the Internal Revenue Code to be depreciated over the remaining cost recovery period for the Section 704(c) built-in gain. If we elect a method other than the remedial method with respect to a goodwill property, Treasury Regulation Section 1.197-2(g)(3) generally requires that the Section 743(b) adjustment attributable to an amortizable Section 197 intangible, which includes goodwill property, should be treated as a newly-acquired asset placed in service in the month when the purchaser acquires the common unit. Under Treasury Regulation Section 1.167(c)-1(a)(6), a Section 743(b) adjustment attributable to property subject to depreciation under Section 167 of the Internal Revenue Code, rather than cost recovery deductions under Section 168, is generally required to be depreciated using either the straight-line method or the 150% declining balance method. If we elect a method other than the remedial method, the depreciation and amortization methods and useful lives associated with the Section 743(b) adjustment, therefore, may differ from the methods and useful lives generally used to depreciate the inside basis in such properties. Under our partnership agreement, our general partner is authorized to take a position to preserve the uniformity of units even if that position is not consistent with these and any other Treasury Regulations. If we elect a method other than the remedial method with respect to a goodwill property, the common basis of such property is not amortizable. Please read “—Uniformity of Units.”

Although Vinson & Elkins L.L.P. is unable to opine as to the validity of this approach because there is no direct or indirect controlling authority on this issue, we intend to depreciate the portion of a Section 743(b) adjustment attributable to unrealized appreciation in the value of Contributed Property, to the extent of any unamortized Book-Tax Disparity, using a rate of depreciation or amortization derived from the depreciation or amortization method and useful life applied to the common basis of the property, or treat that portion as non-amortizable to the extent attributable to property the common basis of which is not amortizable. This method is consistent with the methods employed by other publicly traded partnerships but is arguably inconsistent with Treasury Regulation Section 1.167(c)-1(a)(6), which is not expected to directly apply to a material portion of our assets and Treasury Regulation Section 1.197-2(g)(3). To the extent this Section 743(b) adjustment is attributable to appreciation in value in excess of the unamortized Book-Tax Disparity, we will apply the rules described in the Treasury Regulations and legislative history. If we determine that this position cannot reasonably be taken, we may take a depreciation or amortization position under which all purchasers acquiring units in the same month would receive depreciation or amortization, whether attributable to common basis or a Section 743(b) adjustment, based upon the same applicable rate as if they had purchased a direct interest in our assets. This kind of aggregate approach may result in lower annual depreciation or amortization deductions than would otherwise be allowable to some unitholders. Please read “—Uniformity of Units.” A unitholder’s tax basis for his common units is reduced by his share of our deductions (whether or not such deductions were claimed on an individual’s income tax return) so that any position we take that understates deductions will overstate the common unitholder’s basis in his common units, which may cause the unitholder to understate gain or overstate loss on any sale of such units. Please read “—Disposition of Common Units—Recognition of Gain or Loss.” The IRS may challenge our position with respect to depreciating or amortizing the Section 743(b) adjustment we take to preserve the uniformity of the units. If such a challenge were sustained, the gain from the sale of units might be increased without the benefit of additional deductions.

A Section 754 election is advantageous if the transferee’s tax basis in his units is higher than the units’ share of the aggregate tax basis of our assets immediately prior to the transfer. In that case, as a result of the election, the transferee would have, among other items, a greater amount of depreciation and depletion deductions and his share of any gain or loss on a sale of our assets would be less. Conversely, a Section 754 election is

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disadvantageous if the transferee’s tax basis in his units is lower than those units’ share of the aggregate tax basis of our assets immediately prior to the transfer. Thus, the fair market value of the units may be affected either favorably or unfavorably by the election. A basis adjustment is required regardless of whether a Section 754 election is made in the case of a transfer of an interest in us if we have a substantial built-in loss immediately after the transfer, or if we distribute property and have a substantial basis reduction. Generally a built-in loss or a basis reduction is substantial if it exceeds $250,000.

The calculations involved in the Section 754 election are complex and will be made on the basis of assumptions as to the value of our assets and other matters. For example, the allocation of the Section 743(b) adjustment among our assets must be made in accordance with the Internal Revenue Code. The IRS could seek to reallocate some or all of any Section 743(b) adjustment allocated by us to our tangible assets to goodwill instead. Goodwill, as an intangible asset, is generally nonamortizable or amortizable over a longer period of time or under a less accelerated method than our tangible assets. We cannot assure you that the determinations we make will not be successfully challenged by the IRS and that the deductions resulting from them will not be reduced or disallowed altogether. Should the IRS require a different basis adjustment to be made, and should, in our opinion, the expense of compliance exceed the benefit of the election, we may seek permission from the IRS to revoke our Section 754 election. If permission is granted, a subsequent purchaser of units may be allocated more income than he would have been allocated had the election not been revoked.

Tax Treatment of Operations

Accounting Method and Taxable Year

We use the year ending December 31 as our taxable year and the accrual method of accounting for federal income tax purposes. Each unitholder will be required to include in income his share of our income, gain, loss and deduction for our taxable year ending within or with his taxable year. In addition, a unitholder who has a taxable year ending on a date other than December 31 and who disposes of all of his units following the close of our taxable year but before the close of his taxable year must include his share of our income, gain, loss and deduction in income for his taxable year, with the result that he will be required to include in income for his taxable year his share of more than one year of our income, gain, loss and deduction. Please read “—Disposition of Common Units—Allocations Between Transferors and Transferees.”

Initial Tax Basis, Depreciation and Amortization

The tax basis of our assets will be used for purposes of computing depreciation and cost recovery deductions and, ultimately, gain or loss on the disposition of these assets. The federal income tax burden associated with the difference between the fair market value of our assets and their tax basis immediately prior to this offering will be borne by our partners holding interest in us prior to the offering. Please read “—Tax Consequences of Unit Ownership—Allocation of Income, Gain, Loss and Deduction.”

To the extent allowable, we may elect to use the depreciation and cost recovery methods that will result in the largest deductions being taken in the early years after assets are placed in service. Because our general partner may determine not to adopt the remedial method of allocation with respect to any difference between the tax basis and the fair market value of goodwill immediately prior to this or any future offering, we may not be entitled to any amortization deductions with respect to any goodwill conveyed to us on formation or held by us at the time of any future offering. Please read”—Uniformity of Units.” Property we subsequently acquire or construct may be depreciated using accelerated methods permitted by the Internal Revenue Code.

If we dispose of depreciable property by sale, foreclosure or otherwise, all or a portion of any gain, determined by reference to the amount of depreciation previously deducted and the nature of the property, may be subject to the recapture rules and taxed as ordinary income rather than capital gain. Similarly, a unitholder who has taken cost recovery or depreciation deductions with respect to property we own will likely be required to

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recapture some or all of those deductions as ordinary income upon a sale of his interest in us. Please read “—Tax Consequences of Unit Ownership—Allocation of Income, Gain, Loss and Deduction” and “—Disposition of Common Units—Recognition of Gain or Loss.”

The costs incurred in selling our units (called “syndication expenses”) must be capitalized and cannot be deducted currently, ratably or upon our termination. There are uncertainties regarding the classification of costs as organization expenses, which may be amortized by us, and as syndication expenses, which may not be amortized by us. The underwriting discounts and commissions we incur will be treated as syndication expenses.

Valuation and Tax Basis of Our Properties

The federal income tax consequences of the ownership and disposition of units will depend in part on our estimates of the relative fair market values, and the initial tax bases, of our assets. Although we may from time to time consult with professional appraisers regarding valuation matters, we will make many of the relative fair market value estimates ourselves. These estimates and determinations of basis are subject to challenge and will not be binding on the IRS or the courts. If the estimates of fair market value or basis are later found to be incorrect, the character and amount of items of income, gain, loss or deductions previously reported by unitholders might change, and unitholders might be required to adjust their tax liability for prior years and incur interest and penalties with respect to those adjustments.

Disposition of Common Units

Recognition of Gain or Loss

Gain or loss will be recognized on a sale of units equal to the difference between the amount realized and the unitholder’s tax basis for the units sold. A unitholder’s amount realized will be measured by the sum of the cash or the fair market value of other property received by him plus his share of our nonrecourse liabilities. Because the amount realized includes a unitholder’s share of our nonrecourse liabilities, the gain recognized on the sale of units could result in a tax liability in excess of any cash received from the sale.

Prior distributions from us in excess of cumulative net taxable income for a common unit that decreased a unitholder’s tax basis in that common unit will, in effect, become taxable income if the common unit is sold at a price greater than the unitholder’s tax basis in that common unit, even if the price received is less than his original cost.

Except as noted below, gain or loss recognized by a unitholder, other than a “dealer” in units, on the sale or exchange of a unit held for more than one year will generally be taxable as capital gain or loss. Capital gain recognized by an individual on the sale of units held more than twelve months will generally be taxed at a maximum rate of 15%. However, a portion of this gain or loss will be separately computed and taxed as ordinary income or loss under Section 751 of the Internal Revenue Code to the extent attributable to assets giving rise to depreciation recapture or other “unrealized receivables” or to “inventory items” we own. The term “unrealized receivables” includes potential recapture items, including depreciation recapture. Ordinary income attributable to unrealized receivables, inventory items and depreciation recapture may exceed net taxable gain realized upon the sale of a unit and may be recognized even if there is a net taxable loss realized on the sale of a unit. Thus, a unitholder may recognize both ordinary income and a capital loss upon a sale of units. Net capital losses may offset capital gains and no more than $3,000 of ordinary income, in the case of individuals, and may only be used to offset capital gains in the case of corporations.

The IRS has ruled that a partner who acquires interests in a partnership in separate transactions must combine those interests and maintain a single adjusted tax basis for all those interests. Upon a sale or other disposition of less than all of those interests, a portion of that tax basis must be allocated to the interests sold using an “equitable apportionment” method, which generally means that the tax basis allocated to the interest

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sold equals an amount that bears the same relation to the Partner’s tax basis in his entire interest in the partnership as the value of the interest sold bears to the value of the partner’s entire interest in the partnership. Treasury Regulations under Section 1223 of the Internal Revenue Code allow a selling unitholder who can identify common units transferred with an ascertainable holding period to elect to use the actual holding period of the common units transferred. Thus, according to the ruling, a common unitholder will be unable to select high or low basis common units to sell as would be the case with corporate stock, but, according to the regulations, may designate specific common units sold for purposes of determining the holding period of units transferred. A unitholder electing to use the actual holding period of common units transferred must consistently use that identification method for all subsequent sales or exchanges of common units. A unitholder considering the purchase of additional units or a sale of common units purchased in separate transactions is urged to consult his tax advisor as to the possible consequences of this ruling and application of the regulations.

Specific provisions of the Internal Revenue Code affect the taxation of some financial products and securities, including partnership interests, by treating a taxpayer as having sold an “appreciated” partnership interest, one in which gain would be recognized if it were sold, assigned or terminated at its fair market value, if the taxpayer or related persons enter(s) into:

• a short sale;

• an offsetting notional principal contract; or

• a futures or forward contract with respect to the partnership interest or substantially identical property.

Moreover, if a taxpayer has previously entered into a short sale, an offsetting notional principal contract or a futures or forward contract with respect to the partnership interest, the taxpayer will be treated as having sold that position if the taxpayer or a related person then acquires the partnership interest or substantially identical property. The Secretary of the Treasury is also authorized to issue regulations that treat a taxpayer that enters into transactions or positions that have substantially the same effect as the preceding transactions as having constructively sold the financial position.

Allocations Between Transferors and Transferees

In general, our taxable income and losses will be determined annually, will be prorated on a monthly basis and will be subsequently apportioned among the unitholders in proportion to the number of units owned by each of them as of the opening of the applicable exchange on the first business day of the month, which we refer to in this prospectus as the “Allocation Date.” However, gain or loss realized on a sale or other disposition of our assets other than in the ordinary course of business will be allocated among the unitholders on the Allocation Date in the month in which that gain or loss is recognized. As a result, a unitholder transferring units may be allocated income, gain, loss and deduction realized after the date of transfer.

The use of this method may not be permitted under existing Treasury Regulations. Accordingly, Vinson & Elkins L.L.P. is unable to opine on the validity of this method of allocating income and deductions between unitholders. If this method is not allowed under the Treasury Regulations, or only applies to transfers of less than all of the unitholder’s interest, our taxable income or losses might be reallocated among the unitholders. We are authorized to revise our method of allocation between unitholders, as well as unitholders whose interests vary during a taxable year, to conform to a method permitted under future Treasury Regulations.

A unitholder who owns units at any time during a quarter and who disposes of them prior to the record date set for a cash distribution for that quarter will be allocated items of our income, gain, loss and deductions attributable to that quarter but will not be entitled to receive that cash distribution.

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Notification Requirements

A unitholder who sells any of his units is generally is required to notify us in writing of that sale within 30 days after the sale (or, if earlier, January 15 of the year following the sale). A purchaser of units who purchases units from another unitholder is also generally required to notify us in writing of that purchase within 30 days after the purchase. Upon receiving such notifications, we are required to notify the IRS of that transaction and to furnish specified information to the transferor and transferee. Failure to notify us of a purchase may, in some cases, lead to the imposition of penalties. However, these reporting requirements do not apply to a sale by an individual who is a citizen of the United States and who effects the sale or exchange through a broker who will satisfy such requirements.

Constructive Termination

We will be considered to have been terminated for tax purposes if there is a sale or exchange of 50% or more of the total interests in our capital and profits within a twelve month period. A constructive termination results in the closing of our taxable year for all unitholders. In the case of a unitholder reporting on a taxable year other than a fiscal year ending December 31, the closing of our taxable year may result in more than twelve months of our taxable income or loss being includable in his taxable income for the year of termination. We would be required to make new tax elections after a termination, including a new election under Section 754 of the Internal Revenue Code, and a termination would result in a deferral of our deductions for depreciation. A termination could also result in penalties if we were unable to determine that the termination had occurred. Moreover, a termination might either accelerate the application of, or subject us to, any tax legislation enacted before the termination.

Uniformity of Units

Because we cannot match transferors and transferees of units, we must maintain uniformity of the economic and tax characteristics of the units to a purchaser of these units. In the absence of uniformity, we may be unable to completely comply with a number of federal income tax requirements, both statutory and regulatory. A lack of uniformity can result from a literal application of Treasury Regulation Section 1.167(c)-1(a)(6) and Treasury Regulation Section 1.197-2(g)(3). Any non-uniformity could have a negative impact on the value of the units. Please read “—Tax Consequences of Unit Ownership—Section 754 Election.”

We intend to depreciate the portion of a Section 743(b) adjustment attributable to unrealized appreciation in the value of Contributed Property, to the extent of any unamortized Book-Tax Disparity, using a rate of depreciation or amortization derived from the depreciation or amortization method and useful life applied to the common basis of that property, or treat that portion as nonamortizable, to the extent attributable to property the common basis of which is not amortizable, consistent with the regulations under Section 743 of the Internal Revenue Code, even though that position may be inconsistent with Treasury Regulation Section 1.167(c)-1(a)(6), which is not expected to directly apply to a material portion of our assets, and Treasury Regulation Section 1.197-2(g)(3). Please read “—Tax Consequences of Unit Ownership—Section 754 Election.” To the extent that the Section 743(b) adjustment is attributable to appreciation in value in excess of the unamortized Book-Tax Disparity, we will apply the rules described in the Treasury Regulations and legislative history. If we determine that this position cannot reasonably be taken, we may adopt a depreciation and amortization position under which all purchasers acquiring units in the same month would receive depreciation and amortization deductions, whether attributable to a common basis or Section 743(b) adjustment, based upon the same applicable rate as if they had purchased a direct interest in our property. If this position is adopted, it may result in lower annual depreciation and amortization deductions than would otherwise be allowable to some unitholders and risk the loss of depreciation and amortization deductions not taken in the year that these deductions are otherwise allowable. This position will not be adopted if we determine that the loss of depreciation and amortization deductions will have a material adverse effect on the unitholders. If we choose not to utilize this aggregate method, we may use any other reasonable depreciation and amortization method to preserve the uniformity of the

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intrinsic tax characteristics of any units that would not have a material adverse effect on the unitholders. The IRS may challenge any method of depreciating the Section 743(b) adjustment described in this paragraph. If this challenge were sustained, the uniformity of units might be affected, and the gain from the sale of units might be increased without the benefit of additional deductions. Please read “—Disposition of Common Units—Recognition of Gain or Loss.”

Tax-Exempt Organizations and Other Investors

Ownership of units by employee benefit plans, other tax-exempt organizations, regulated investment companies, non-resident aliens, foreign corporations and other foreign persons raises issues unique to those investors and, as described below, may have substantially adverse tax consequences to them.

Employee benefit plans and most other organizations exempt from federal income tax, including individual retirement accounts and other retirement plans, are subject to federal income tax on unrelated business taxable income. Virtually all of our income allocated to a unitholder that is a tax-exempt organization will be unrelated business taxable income and will be taxable to them.

Non-resident aliens and foreign corporations, trusts or estates that own units will be considered to be engaged in business in the United States because of the ownership of units. As a consequence, they will be required to file federal tax returns to report their share of our income, gain, loss or deduction and pay federal income tax at regular rates on their share of our net income or gain. Moreover, under rules applicable to publicly traded partnerships, we will withhold at the highest applicable effective tax rate from cash distributions made quarterly to foreign unitholders. Each foreign unitholder must obtain a taxpayer identification number from the IRS and submit that number to our transfer agent on a Form W-8BEN or applicable substitute form in order to obtain credit for these withholding taxes. A change in applicable law may require us to change these procedures.

In addition, because a foreign corporation that owns units will be treated as engaged in a U.S. trade or business, that corporation may be subject to the U.S. branch profits tax at a rate of 30%, in addition to regular federal income tax, on its share of our income and gain, as adjusted for changes in the foreign corporation’s “U.S. net equity,” which is effectively connected with the conduct of a U.S. trade or business. That tax may be reduced or eliminated by an income tax treaty between the United States and the country in which the foreign corporate unitholder is a “qualified resident.” In addition, this type of unitholder is subject to special information reporting requirements under Section 6038C of the Internal Revenue Code.

Under a ruling of the IRS, a foreign unitholder who sells or otherwise disposes of a unit will be subject to federal income tax on gain realized on the sale or disposition of that unit to the extent that this gain is effectively connected with a U.S. trade or business of the foreign unitholder. Apart from the ruling, a foreign unitholder will not be taxed or subject to withholding upon the sale or disposition of a unit if he has owned less than 5% in value of the units during the five-year period ending on the date of the disposition and if the units are regularly traded on an established securities market at the time of the sale or disposition.

Administrative Matters

Information Returns and Audit Procedures

We intend to furnish to each unitholder, within 90 days after the close of each calendar year, specific tax information, including a Schedule K-1, which describes his share of our income, gain, loss and deduction for our preceding taxable year. In preparing this information, which will not be reviewed by counsel, we will take various accounting and reporting positions, some of which have been mentioned earlier, to determine his share of income, gain, loss and deduction. We cannot assure you that those positions will yield a result that conforms to the requirements of the Internal Revenue Code, Treasury Regulations or administrative interpretations of the IRS. Neither we nor Vinson & Elkins L.L.P. can assure prospective unitholders that the IRS will not successfully

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contend in court that those positions are impermissible. Any challenge by the IRS could negatively affect the value of the units.

The IRS may audit our federal income tax information returns. Adjustments resulting from an IRS audit may require each unitholder to adjust a prior year’s tax liability, and possibly may result in an audit of his return. Any audit of a unitholder’s return could result in adjustments not related to our returns as well as those related to our returns.

Partnerships generally are treated as separate entities for purposes of federal tax audits, judicial review of administrative adjustments by the IRS and tax settlement proceedings. The tax treatment of partnership items of income, gain, loss and deduction are determined in a partnership proceeding rather than in separate proceedings with the partners. The Internal Revenue Code requires that one partner be designated as the “Tax Matters Partner” for these purposes. Our partnership agreement names Boardwalk GP as our Tax Matters Partner.

The Tax Matters Partner will make some elections on our behalf and on behalf of unitholders. In addition, the Tax Matters Partner can extend the statute of limitations for assessment of tax deficiencies against unitholders for items in our returns. The Tax Matters Partner may bind a unitholder with less than a 1% profits interest in us to a settlement with the IRS unless that unitholder elects, by filing a statement with the IRS, not to give that authority to the Tax Matters Partner. The Tax Matters Partner may seek judicial review, by which all the unitholders are bound, of a final partnership administrative adjustment and, if the Tax Matters Partner fails to seek judicial review, judicial review may be sought by any unitholder having at least a 1% interest in profits or by any group of unitholders having in the aggregate at least a 5% interest in profits. However, only one action for judicial review will go forward, and each unitholder with an interest in the outcome may participate.

A unitholder must file a statement with the IRS identifying the treatment of any item on his federal income tax return that is not consistent with the treatment of the item on our return. Intentional or negligent disregard of this consistency requirement may subject a unitholder to substantial penalties.

Nominee Reporting

Persons who hold an interest in us as a nominee for another person are required to furnish to us:

• the name, address and taxpayer identification number of the beneficial owner and the nominee;

• whether the beneficial owner is:

a person that is not a U.S. person;

a foreign government, an international organization or any wholly owned agency or instrumentality of either of the foregoing; or

a tax-exempt entity;

• the amount and description of units held, acquired or transferred for the beneficial owner; and

• specific information including the dates of acquisitions and transfers, means of acquisitions and transfers, and acquisition cost for purchases, as well as the amount of net proceeds from sales.

Brokers and financial institutions are required to furnish additional information, including whether they are U.S. persons and specific information on units they acquire, hold or transfer for their own account. A penalty of $50 per failure, up to a maximum of $100,000 per calendar year, is imposed by the Internal Revenue Code for failure to report that information to us. The nominee is required to supply the beneficial owner of the units with the information furnished to us.

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Accuracy-Related Penalties

An additional tax equal to 20% of the amount of any portion of an underpayment of tax that is attributable to one or more specified causes, including negligence or disregard of rules or regulations, substantial understatements of income tax and substantial valuation misstatements, is imposed by the Internal Revenue Code. No penalty will be imposed, however, for any portion of an underpayment if it is shown that there was a reasonable cause for that portion and that the taxpayer acted in good faith regarding that portion.

For individuals, a substantial understatement of income tax in any taxable year exists if the amount of the understatement exceeds the greater of 10% of the tax required to be shown on the return for the taxable year or $5,000. The amount of any understatement subject to penalty generally is reduced if any portion is attributable to a position adopted on the return:

• for which there is, or was, “substantial authority”; or

• as to which there is a reasonable basis and the pertinent facts of that position are disclosed on the return.

If any item of income, gain, loss or deduction included in the distributive shares of unitholders might result in that kind of an “understatement” of income for which no “substantial authority” exists relating to such a transaction, we must disclose the pertinent facts on our return. In addition, we will make a reasonable effort to furnish sufficient information for unitholders to make adequate disclosure on their returns and to take other actions as may be appropriate to permit unitholders to avoid liability for this penalty. More stringent rules apply to “tax shelters,” which we do not believe includes us.

A substantial valuation misstatement exists if the value of any property, or the adjusted basis of any property, claimed on a tax return is 200% or more of the amount determined to be the correct amount of the valuation or adjusted basis. No penalty is imposed unless the portion of the underpayment attributable to a substantial valuation misstatement exceeds $5,000 ($10,000 for most corporations). If the valuation claimed on a return is 400% or more than the correct valuation, the penalty imposed increases to 40%.

Reportable Transactions

If we were to engage in a “reportable transaction,” we (and possibly you and others) would be required to make a detailed disclosure of the transaction to the IRS. A transaction may be a reportable transaction based upon any of several factors, including the fact that it is a type of tax avoidance transaction publicly identified by the IRS as a “listed transaction” or that it produces certain kinds of losses for partnerships, individuals, S corporations, and trusts in excess of $2 million in any single year, or $4 million in any combination of tax years. Our participation in a reportable transaction could increase the likelihood that our federal income tax information return (and possibly your tax return) would be audited by the IRS. Please read “—Information Returns and Audit Procedures.”

Moreover, if we were to participate in a reportable transaction with a significant purpose to avoid or evade tax, or in any listed transaction, you may be subject to the following provisions of the American Jobs Creation Act of 2004:

• accuracy-related penalties with a broader scope, significantly narrower exceptions, and potentially greater amounts than described above at “—Accuracy-Related Penalties,”

• for those persons otherwise entitled to deduct interest on federal tax deficiencies, nondeductibility of interest on any resulting tax liability, and

• in the case of a listed transaction, an extended statute of limitations.

We do not expect to engage in any reportable transactions.

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State, Local, Foreign and Other Tax Considerations

In addition to federal income taxes, you likely will be subject to other taxes, such as state, local and foreign income taxes, unincorporated business taxes, and estate, inheritance or intangible taxes that may be imposed by the various jurisdictions in which we do business or own property or in which you are a resident. Although an analysis of those various taxes is not presented here, each prospective unitholder should consider their potential impact on his investment in us. We currently do business or own property or do business in 12 states. We may also own property or do business in other jurisdictions in the future. Although you may not be required to file a return and pay taxes in some jurisdictions because your income from that jurisdiction falls below the filing and payment requirement, you will be required to file income tax returns and to pay income taxes in many of these jurisdictions in which we do business or own property and may be subject to penalties for failure to comply with those requirements. In some jurisdictions, tax losses may not produce a tax benefit in the year incurred and may not be available to offset income in subsequent taxable years. Some of the jurisdictions may require us, or we may elect, to withhold a percentage of income from amounts to be distributed to a unitholder who is not a resident of the jurisdiction. Withholding, the amount of which may be greater or less than a particular unitholder’s income tax liability to the jurisdiction, generally does not relieve a nonresident unitholder from the obligation to file an income tax return. Amounts withheld will be treated as if distributed to unitholders for purposes of determining the amounts distributed by us. Please read “—Tax Consequences of Unit Ownership—Entity-Level Collections.” Based on current law and our estimate of our future operations, our general partner anticipates that any amounts required to be withheld will not be material.

It is the responsibility of each unitholder to investigate the legal and tax consequences, under the laws of pertinent jurisdictions, of his investment in us. Accordingly, each prospective unitholder is urged to consult, and depend upon, his tax counsel or other advisor with regard to those matters. Further, it is the responsibility of each unitholder to file all state, local and foreign, as well as U.S. federal tax returns, that may be required of him. Vinson & Elkins L.L.P. has not rendered an opinion on the state, local or foreign tax consequences of an investment in us.

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LEGAL MATTERS

In connection with particular offerings of the securities in the future, and if stated in the applicable prospectus supplement, the validity of those securities may be passed upon by Vinson & Elkins L.L.P., New York, New York, as our counsel, and for any underwriters or agents by counsel named in the applicable prospectus supplement.

EXPERTS

The consolidated financial statements, the related financial statement schedule, and management’s report on the effectiveness of internal control over financial reporting of Boardwalk Pipeline Partners, LP incorporated in this prospectus by reference from the Boardwalk Pipeline Partners, LP Annual Report on Form 10-K for the year ended December 31, 2006 have been audited by Deloitte & Touche LLP, an independent registered public accounting firm, as stated in their reports, which are incorporated herein by reference (which reports (1) express an unqualified opinion on the financial statements and financial statement schedule and include an explanatory paragraph referring to a change in Boardwalk Pipeline Partners, LP’s tax status and the adoption of Statement of Financial Accounting Standards No. 158, Employers’ Accounting for Defined Benefit Pension and Other Postretirement Plans—an amendment of FASB Statements No. 87, 88, 106 and 132(R), (2) express an unqualified opinion on management’s assessment regarding the effectiveness of internal control over financial reporting, and (3) express an unqualified opinion on the effectiveness of internal control over financial reporting), and have been so incorporated in reliance upon the reports of such firm given upon their authority as experts in accounting and auditing.

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APPENDIX A

APPLICATION FOR TRANSFER OF COMMON UNITS

Transferees of Common Units must execute and deliver this application to Boardwalk Pipeline Partners, LP, c/o Boardwalk GP, LP, 3800 Frederica Street, Owensboro, KY, 42301; Attn: CFO, to be admitted as limited partners to Boardwalk Pipeline Partners, LP.

The undersigned (“Assignee”) hereby applies for transfer to the name of the Assignee of the Common Units evidenced hereby and hereby certifies to Boardwalk Pipeline Partners, LP (the “Partnership”) that the Assignee (including to the best of Assignee’s knowledge, any person for whom the Assignee will hold the Common Units) is an Eligible Holder.*

The Assignee (a) requests admission as a Substituted Limited Partner and agrees to comply with and be bound by, and hereby executes, the Second Amended and Restated Agreement of Limited Partnership of the Partnership, as amended, supplemented or restated to the date hereof (the “Partnership Agreement”), (b) represents and warrants that the Assignee has all right, power and authority and, if an individual, the capacity necessary to enter into the Partnership Agreement, (c) appoints the General Partner of the Partnership and, if a Liquidator shall be appointed, the Liquidator of the Partnership as the Assignee’s attorney-in-fact to execute, swear to, acknowledge and file any document, including, without limitation, the Partnership Agreement and any amendment thereto and the Certificate of Limited Partnership of the Partnership and any amendment thereto, necessary or appropriate for the Assignee’s admission as a Substituted Limited Partner and as a party to the Partnership Agreement, (d) gives the powers of attorney provided for in the Partnership Agreement, and (e) makes the waivers and gives the consents and approvals contained in the Partnership Agreement. Capitalized terms not defined herein have the meanings assigned to such terms in the Partnership Agreement. This application constitutes a Taxation Certification, as defined in the Partnership Agreement.

Date:                                                       

Social Security or other identifying number of Assignee	Signature of Assignee
Purchase Price including commissions, if any	Name and Address of Assignee

Type of Entity (check one):

¨ Individual             ¨ Partnership             ¨ Corporation

¨ Trust             ¨ Other (specify)

If not an Individual (check one):

¨ the entity is subject to United States federal income taxation on the income generated by the Partnership;

¨ the entity is not subject to United States federal income taxation, but it is a pass-through entity and all of its beneficial owners are subject to United States federal income taxation on the income generated by the Partnership;

A-1

¨ the entity is not subject to United States federal income taxation and it is (a) not a pass-through entity or (b) a pass-through entity, but not all of its beneficial owners are subject to United States federal income taxation on the income generated by the Partnership. Important Note—by checking this box, the Assignee is contradicting its certification that it is an Eligible Holder.

* The Term “Eligible Holder” means (a) an individual or entity subject to United States federal income taxation on the income generated by the Partnership; or (b) an entity not subject to United States federal income taxation on the income generated by the Partnership, so long as all of the entity’s owners are subject to United States federal income taxation on the income generated by the Partnership. Individuals or entities are subject to taxation, in the context of defining an Eligible Holder, to the extent they are taxable on the items of income and gain allocated by the Partnership or would be taxable on the items of income and gain allocated by the Partnership if they had no offsetting deductions or tax credits unrelated to the ownership of the Common Units. Schedule I hereto contains a list of various types of investors that are categorized and identified as either “Eligible Holders” or “Non-Eligible Holders.”

Nationality (check one):

¨ U.S. Citizen, Resident or Domestic Entity             ¨ Non-resident Alien

¨ Foreign Corporation

If the U.S. Citizen, Resident or Domestic Entity box is checked, the following certification must be completed.

Under Section 1445(e) of the Internal Revenue Code of 1986, as amended (the “Code”), the Partnership must withhold tax with respect to certain transfers of property if a holder of an interest in the Partnership is a foreign person. To inform the Partnership that no withholding is required with respect to the undersigned interestholder’s interest in it, the undersigned hereby certifies the following (or, if applicable, certifies the following on behalf of the interestholder).

Complete Either A or B:

A. Individual Interestholder

1. I am not a non-resident alien for purposes of U.S. income taxation.

2. My U.S. taxpayer identification number (Social Security Number) is                             .

3. My home address is                                                                      .

B. Partnership, Corporation or Other Interestholder

1. The interestholder is not a foreign corporation, foreign partnership, foreign trust or foreign estate (as those terms are defined in the Code and Treasury Regulations).

2. The interestholder’s U.S. employer identification number is                             .

3. The interestholder’s office address and place of incorporation (if applicable) is                                     .

The interestholder agrees to notify the Partnership within sixty (60) days of the date the interestholder becomes a foreign person.

The interestholder understands that this certificate may be disclosed to the Internal Revenue Service and the Federal Energy Regulatory Commission by the Partnership and that any false statement contained herein could be punishable by fine, imprisonment or both.

A-2

Under penalties of perjury, I declare that I have examined this certification and, to the best of my knowledge and belief, it is true, correct and complete and, if applicable, I further declare that I have authority to sign this document on behalf of:

Name of Interestholder

Signature and Date

Title (if applicable)

Note: If the Assignee is a broker, dealer, bank, trust company, clearing corporation, other nominee holder or an agent of any of the foregoing, and is holding for the account of any other person, this application should be completed by an officer thereof or, in the case of a broker or dealer, by a registered representative who is a member of a registered national securities exchange or a member of the National Association of Securities Dealers, Inc., or, in the case of any other nominee holder, a person performing a similar function. If the Assignee is a broker, dealer, bank, trust company, clearing corporation, other nominee owner or an agent of any of the foregoing, the above certification as to any person for whom the Assignee will hold the Common Units shall be made to the best of the Assignee’s knowledge.

A-3

SCHEDULE I

Eligible Holders

The following are considered Eligible Holders:

• Individuals (U.S. or non-U.S.)

• C corporations (U.S. or non-U.S.)

• Tax exempt organizations subject to tax on unrelated business taxable income or “UBTI,” including IRAs, 401(k) plans and Keough accounts

• S corporations with shareholders that are individuals, trusts or tax exempt organizations subject to tax on UBTI

Potentially Eligible Holders

• S corporations (unless they have ESOP shareholders*)

• Partnerships (unless its partners include mutual funds, real estate investment trusts or “REITs,” governmental entities and agencies, S corporations with ESOP shareholders^* or other partnerships with such partners)

• Trusts (unless beneficiaries are not subject to tax)

Non-Eligible Holders

The following are not considered Eligible Holders:

• Mutual Funds

• REITs

• Governmental entities and agencies

• S corporations with ESOP shareholders^*

“S corporations with ESOP shareholders” are S corporations with shareholders that include employee stock ownership plans.

A-4

APPENDIX B

CERTIFICATION FORM FOR NON-INDIVIDUAL INVESTORS

As described in this Prospectus, only Eligible Holders (as defined on Schedule I hereto) may purchase common units in the Partnership’s proposed public offering (the “Offering”). In order to comply with this requirement, all potential investors that are not natural persons, including institutions, partnerships and trusts (“Non-individual Investors”), must complete this Certification Form.

• If you have an institutional sales account with                         , you should fax signed forms to by              pm Eastern time on             ,             , 20         (the “Return Date”).

• If you have any other type of brokerage account with any of the broker-dealers on page 2, you should fax signed forms to your retail broker or financial advisor upon initial indication of interest.

Non-individual Investors who do not complete and return this

form by the Return Date will not be allocated units in this offering.

1. Acknowledgement and Consent to Forward this Certification Form. The undersigned Non-individual Investor acknowledges and understands that an underwriter who receives this Certification Form may forward it to the Partnership and/or the transfer agent for the Common Units. Accordingly, the undersigned hereby grants its consent for                              or any underwriter or affiliate thereof listed on page 2 to forward this Certification Form to the Partnership and/or the transfer agent for the Common Units.

2. Acknowledgement of Obligation to Complete a Transfer Application. The undersigned Non-individual Investor further acknowledges that, if it purchases Common Units in the Offering, it must complete a Transfer Application in the form included as Appendix A to the Prospectus and deliver it to the address as instructed on the Transfer Application. The undersigned Non-individual Investor further acknowledges that no underwriter or affiliate of an underwriter has any responsibility or obligation to complete or deliver a Transfer Application on behalf of the undersigned.

3. Certification as to Tax Status. The undersigned Non-individual Investor hereby certifies that it is either (check one):

¨ an entity that is subject to United States federal income taxation on the income generated by the Partnership; or

¨ an entity that is not subject to United States federal income taxation, but is a pass-through entity and all of its beneficial owners are subject to United States federal income taxation on the income generated by the Partnership.

Signing this form shall not obligate the undersigned Non-individual Investor to provide or share any tax-related information with the Partnership, the transfer agent or any underwriter in connection with the purchase and sale of common units in the Offering.

Executed this                          day of             , 20        .

(Name of Entity)
By:
	Name:
	Title:

B-1

NON-INDIVIDUAL INVESTOR RETAIL BROKER DEALERS

B-2

SCHEDULE I

An “Eligible Holder” is (a) an individual or entity subject to United States federal income taxation on the income generated by the Partnership or (b) an entity not subject to United States federal income taxation on the income generated by the Partnership, so long as all of the entity’s owners are subject to United States federal income taxation on the income generated by the Partnership or would be taxable on the items of income and gain allocated by the Partnership if they had no offsetting deductions or tax credits unrelated to the ownership of the Common Units. Set forth below is a list of various types of investors that are categorized and identified as Eligible Holders, Potentially Eligible Holders or Non-Eligible Holders.

Eligible Holders

The following are considered Eligible Holders:

• Individuals (U.S. or non-U.S.)

• C corporations (U.S. or non-U.S.)

• Tax exempt organizations subject to tax on unrelated business taxable income or “UBTI,” including IRAs, 401(k) plans and Keough accounts

• S corporations with shareholders that are individuals, trusts or tax exempt organizations subject to tax on UBTI

Potentially Eligible Holders

The following are considered Eligible Holders, unless the bracketed information applies:

• Partnerships (unless its partners include mutual funds, real estate investment trusts or “REITs,” governmental entities and agencies, S corporations with ESOP shareholders¹ or other partnerships with such partners)

• Trusts (unless beneficiaries are not subject to tax)

Non-Eligible Holders

The following are not considered Eligible Holders:

• Mutual Funds

• REITs

• Governmental entities and agencies

• S corporations with ESOP shareholders¹

“S corporations with ESOP shareholders” are S corporations with shareholders that include employee stock ownership plans.

B-3

$350,000,000

Boardwalk Pipelines, LP

5.75% Senior Notes due 2019

Fully and unconditionally guaranteed by Boardwalk Pipeline Partners, LP

PROSPECTUS SUPPLEMENT

August 18, 2009

Citi

J.P. Morgan

Wells Fargo Securities