10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

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

For the quarterly period ended September 30, 2013

Or

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

For the transition period from                      to                     

Commission file number 1-31507

WASTE CONNECTIONS, INC.

(Exact name of registrant as specified in its charter)

Delaware	94-3283464
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

3 Waterway Square Place, Suite 110

The Woodlands, TX 77380

(Address of principal executive offices) (Zip code)

(832) 442-2200

(Registrant’s telephone number, including area code)

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

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

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

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

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

Indicate the number of shares outstanding of each of the issuer’s classes of common stock:

As of October 14, 2013: 123,546,601 shares of common stock

WASTE CONNECTIONS, INC.

FORM  10-Q

TABLE OF CONTENTS

		Page
PART I – FINANCIAL INFORMATION (unaudited)
Item 1.	Financial Statements
	Condensed Consolidated Balance Sheets		1
	Condensed Consolidated Statements of Net Income		2
	Condensed Consolidated Statements of Comprehensive Income		3
	Condensed Consolidated Statements of Equity		4
	Condensed Consolidated Statements of Cash Flows		6
	Notes to Condensed Consolidated Financial Statements		7
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations		32
Item 3.	Quantitative and Qualitative Disclosures About Market Risk		56
Item 4.	Controls and Procedures		58
PART II – OTHER INFORMATION
Item 1.	Legal Proceedings		59
Item 6.	Exhibits		59
Signatures			60
Exhibit Index			61

PART I – FINANCIAL INFORMATION

Item 1. Financial Statements

WASTE CONNECTIONS, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited)

(In thousands, except share and per share amounts)

	September 30, 2013			December 31, 2012
ASSETS
Current assets:
Cash and equivalents	$	19,281		$	23,212
Accounts receivable, net of allowance for doubtful accounts of $6,458 and $6,548 at September 30, 2013 and December 31, 2012, respectively		238,842			235,762
Deferred income taxes		37,952			45,798
Prepaid expenses and other current assets		33,405			57,714
Total current assets		329,480			362,486
Property and equipment, net		2,424,716			2,457,606
Goodwill		1,637,541			1,636,557
Intangible assets, net		521,204			541,908
Restricted assets		35,265			34,889
Other assets, net		46,441			42,580
	$	4,994,647		$	5,076,026
LIABILITIES AND EQUITY
Current liabilities:
Accounts payable	$	115,404		$	130,260
Book overdraft		12,192			12,567
Accrued liabilities		134,951			121,829
Deferred revenue		68,644			69,930
Current portion of contingent consideration		30,722			49,018
Current portion of long-term debt and notes payable		7,456			33,968
Total current liabilities		369,369			417,572
Long-term debt and notes payable		2,025,664			2,204,967
Long-term portion of contingent consideration		25,044			30,346
Other long-term liabilities		83,784			75,129
Deferred income taxes		483,433			464,882
Total liabilities		2,987,294			3,192,896
Commitments and contingencies (Note 17)
Equity:
Preferred stock: $0.01 par value per share; 7,500,000 shares authorized; none issued and outstanding		—			—
Common stock: $0.01 par value per share; 250,000,000 shares authorized; 123,546,188 and 123,019,494 shares issued and outstanding at September 30, 2013 and December 31, 2012, respectively		1,235			1,230
Additional paid-in capital		791,519			779,904
Accumulated other comprehensive loss		(2,947	)		(6,165	)
Retained earnings		1,212,412			1,103,188
Total Waste Connections’ equity		2,002,219			1,878,157
Noncontrolling interest in subsidiaries		5,134			4,973
Total equity		2,007,353			1,883,130
	$	4,994,647		$	5,076,026

The accompanying notes are an integral part of these condensed consolidated financial statements.

Page 1

WASTE CONNECTIONS, INC.

CONDENSED CONSOLIDATED STATEMENTS OF NET INCOME

(Unaudited)

(In thousands, except share and per share amounts)

	Three months ended September 30,						Nine months ended September 30,
	2013			2012			2013			2012
Revenues	$	503,646		$	425,654		$	1,442,918		$	1,212,815
Operating expenses:
Cost of operations		274,141			243,243			794,588			698,351
Selling, general and administrative		53,536			47,977			159,690			143,899
Depreciation		55,863			42,313			162,277			119,331
Amortization of intangibles		6,211			6,267			18,861			18,115
Loss (gain) on disposal of assets		(1,129	)		244			1,993			715
Gain from litigation settlement		—			(3,537	)		—			(3,537	)
Loss (gain) on prior office leases		(596	)		—			9,902			—
Operating income		115,620			89,147			295,607			235,941
Interest expense		(17,911	)		(11,949	)		(55,851	)		(36,063	)
Other income (expense), net		845			825			(119	)		1,663
Income before income tax provision		98,554			78,023			239,637			201,541
Income tax provision		(37,641	)		(28,403	)		(93,049	)		(77,967	)
Net income		60,913			49,620			146,588			123,574
Less: Net income attributable to noncontrolling interests		(207	)		(235	)		(359	)		(470	)
Net income attributable to Waste Connections	$	60,706		$	49,385		$	146,229		$	123,104
Earnings per common share attributable to Waste Connections’ common stockholders:
Basic	$	0.49		$	0.40		$	1.18		$	1.02
Diluted	$	0.49		$	0.40		$	1.18		$	1.02
Shares used in the per share calculations:
Basic		123,676,936			123,031,259			123,557,317			120,571,106
Diluted		124,279,666			123,665,589			124,089,422			121,198,901
Cash dividends per common share	$	0.10		$	0.09		$	0.30		$	0.27

The accompanying notes are an integral part of these condensed consolidated financial statements.

Page 2

WASTE CONNECTIONS, INC.

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(Unaudited)

(In thousands, except share and per share amounts)

	Three months ended September 30,						Nine months ended September 30,
	2013			2012			2013			2012
Net income	$	60,913		$	49,620		$	146,588		$	123,574
Other comprehensive income (loss), before tax:
Interest rate swap amounts reclassified into interest expense		1,424			1,380			4,203			3,886
Fuel hedge amounts reclassified into cost of operations		—			(1,093	)		—			(3,327	)
Changes in fair value of interest rate swaps		(1,310	)		(2,415	)		514			(7,208	)
Changes in fair value of the fuel hedge		438			1,782			486			2,455
Other comprehensive income (loss) before tax		552			(346	)		5,203			(4,194	)
Income tax (expense) benefit related to items of other comprehensive income		(211	)		131			(1,985	)		1,594
Other comprehensive income (loss), net of tax		341			(215	)		3,218			(2,600	)
Comprehensive income		61,254			49,405			149,806			120,974
Less: Comprehensive income attributable to noncontrolling interests		(207	)		(235	)		(359	)		(470	)
Comprehensive income attributable to Waste Connections	$	61,047		$	49,170		$	149,447		$	120,504

The accompanying notes are an integral part of these condensed consolidated financial statements.

Page 3

WASTE CONNECTIONS, INC.

CONDENSED CONSOLIDATED STATEMENTS OF EQUITY

NINE MONTHS ENDED SEPTEMBER 30, 2013

(Unaudited)

(In thousands, except share amounts)

	Waste Connections’ Equity
	Common Stock						Additional Paid-In			Accumulated Other Comprehensive			Retained			Noncontrolling
	Shares			Amount			Capital			Income (Loss)			Earnings			Interests			Total
Balances at December 31, 2012		123,019,494		$	1,230		$	779,904		$	(6,165	)	$	1,103,188		$	4,973		$	1,883,130
Vesting of restricted stock units		480,903			5			(5	)		—			—			—			—
Tax withholdings related to net share settlements of restricted stock units		(151,769	)		(2	)		(5,419	)		—			—			—			(5,421	)
Equity-based compensation		—			—			11,268			—			—			—			11,268
Exercise of stock options and warrants		197,560			2			2,232			—			—			—			2,234
Excess tax benefit associated with equity-based compensation		—			—			3,539			—			—			—			3,539
Cash dividends on common stock		—			—			—			—			(37,005	)		—			(37,005	)
Amounts reclassified into earnings, net of taxes		—			—			—			2,595			—			—			2,595
Changes in fair value of cash flow hedges, net of taxes		—			—			—			623			—			—			623
Distributions to noncontrolling interests		—			—			—			—			—			(198	)		(198	)
Net income		—			—			—			—			146,229			359			146,588
Balances at September 30, 2013		123,546,188		$	1,235		$	791,519		$	(2,947	)	$	1,212,412		$	5,134		$	2,007,353

The accompanying notes are an integral part of these condensed consolidated financial statements.

Page 4

WASTE CONNECTIONS, INC.

CONDENSED CONSOLIDATED STATEMENTS OF EQUITY

NINE MONTHS ENDED SEPTEMBER 30, 2012

(Unaudited)

(In thousands, except share amounts)

	Waste Connections’ Equity
	Common Stock						Additional Paid-In			Accumulated Other Comprehensive			Retained			Noncontrolling
	Shares			Amount			Capital			Income (Loss)			Earnings			Interests			Total
Balances at December 31, 2011		110,907,782		$	1,109		$	408,721		$	(3,480	)	$	988,560		$	4,777		$	1,399,687
Vesting of restricted stock units		588,910			6			(6	)		—			—			—			—
Tax withholdings related to net share settlements of restricted stock units		(189,200	)		(2	)		(6,037	)		—			—			—			(6,039	)
Equity-based compensation		—			—			14,036			—			—			—			14,036
Exercise of stock options and warrants		95,900			1			1,041			—			—			—			1,042
Issuance of common stock, net of issuance costs of $376		12,000,000			120			369,464			—			—			—			369,584
Excess tax benefit associated with equity-based compensation		—			—			3,415			—			—			—			3,415
Repurchase of common stock		(619,447	)		(6	)		(18,591	)		—			—			—			(18,597	)
Cash dividends on common stock		—			—			—			—			(32,182	)		—			(32,182	)
Amounts reclassified into earnings, net of taxes		—			—			—			347			—			—			347
Changes in fair value of cash flow hedges, net of taxes		—			—			—			(2,947	)		—			—			(2,947	)
Distributions to noncontrolling interests		—			—			—			—			—			(94	)		(94	)
Net income		—			—			—			—			123,104			470			123,574
Balances at September 30, 2012		122,783,945		$	1,228		$	772,043		$	(6,080	)	$	1,079,482		$	5,153		$	1,851,826

The accompanying notes are an integral part of these condensed consolidated financial statements.

Page 5

WASTE CONNECTIONS, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

(In thousands)

	Nine months ended September 30,
	2013			2012
Cash flows from operating activities:
Net income	$	146,588		$	123,574
Adjustments to reconcile net income to net cash provided by operating activities:
Loss on disposal of assets		1,993			715
Depreciation		162,277			119,331
Amortization of intangibles		18,861			18,115
Deferred income taxes, net of acquisitions		24,411			18,451
Amortization of debt issuance costs		2,836			1,247
Equity-based compensation		11,268			14,036
Interest income on restricted assets		(295	)		(491	)
Interest accretion		3,677			2,798
Excess tax benefit associated with equity-based compensation		(3,539	)		(3,415	)
Loss on prior office leases		9,902			—
Payment of contingent consideration recorded in earnings		(5,059	)		—
Net change in operating assets and liabilities, net of acquisitions		12,484			32,378
Net cash provided by operating activities		385,404			326,739
Cash flows from investing activities:
Payments for acquisitions, net of cash acquired		(2,031	)		(223,256	)
Proceeds from adjustment to acquisition consideration		18,000			—
Capital expenditures for property and equipment		(140,872	)		(110,995	)
Proceeds from disposal of assets		9,075			2,107
Increase in restricted assets, net of interest income		(81	)		4,779
Other		(4,868	)		(6,287	)
Net cash used in investing activities		(120,777	)		(333,652	)
Cash flows from financing activities:
Proceeds from long-term debt		212,500			334,000
Principal payments on notes payable and long-term debt		(418,316	)		(545,069	)
Payment of contingent consideration recorded at acquisition date		(23,530	)		(4,099	)
Change in book overdraft		(374	)		(3,383	)
Proceeds from option and warrant exercises		2,234			1,042
Excess tax benefit associated with equity-based compensation		3,539			3,415
Payments for repurchase of common stock		—			(18,597	)
Payments for cash dividends		(37,005	)		(32,182	)
Tax withholdings related to net share settlements of restricted stock units		(5,421	)		(6,039	)
Distributions to noncontrolling interests		(198	)		(94	)
Debt issuance costs		(1,987	)		(776	)
Proceeds from common stock offering, net		—			369,584
Net cash provided by (used in) financing activities		(268,558	)		97,802
Net increase (decrease) in cash and equivalents		(3,931	)		90,889
Cash and equivalents at beginning of period		23,212			12,643
Cash and equivalents at end of period	$	19,281		$	103,532
Non-cash financing activity:
Liabilities assumed and notes payable issued to sellers of businesses acquired	$	486		$	51,004

The accompanying notes are an integral part of these condensed consolidated financial statements.

Page 6

WASTE CONNECTIONS, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

(Dollar amounts in thousands, except share, per share, per gallon, tonnage and per ton amounts)

1. BASIS OF PRESENTATION AND SUMMARY

The accompanying condensed consolidated financial statements relate to Waste Connections, Inc. and its subsidiaries (“WCI” or the “Company”) for the three and nine month periods ended September 30, 2013 and 2012. In the opinion of management, the accompanying balance sheets and related interim statements of net income, comprehensive income, cash flows and equity include all adjustments, consisting only of normal recurring items, necessary for their fair statement in conformity with U.S. generally accepted accounting principles (“GAAP”). Preparing financial statements requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenue and expenses. Examples include accounting for landfills, self-insurance accruals, income taxes, allocation of acquisition purchase price and asset impairments. An additional area that involves estimation is when the Company estimates the amount of potential exposure it may have with respect to litigation, claims and assessments in accordance with the accounting guidance on contingencies. Actual results could differ materially from the estimates and assumptions that the Company uses in the preparation of its condensed consolidated financial statements.

Interim results are not necessarily indicative of results for a full year. These interim financial statements should be read in conjunction with the financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2012.

2. NEW ACCOUNTING STANDARDS

Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income. In February 2013, the FASB issued guidance requiring entities to provide information about the amounts reclassified out of accumulated other comprehensive income (“AOCI”) by component. In addition, it requires entities to present, either on the face of the statement where net income is presented or in the notes, significant amounts reclassified out of AOCI by the respective line items of net income if the amount reclassified is required under GAAP to be reclassified to net income in its entirety in the same reporting period. This guidance is effective prospectively for annual and interim reporting periods beginning after December 15, 2012, with early adoption permitted. The amounts required to be disclosed under this guidance are disclosed in Notes 9 and 13.

3. RECLASSIFICATION

Certain amounts reported in the Company’s prior year financial statements have been reclassified to conform with the 2013 presentation.

4. LANDFILL ACCOUNTING

At September 30, 2013, the Company owned or operated 42 municipal solid waste (“MSW”) landfills, five exploration and production (“E&P”) waste landfills, which only accept E&P waste, and seven non-MSW landfills, which only accept construction and demolition, industrial and other non-putrescible waste. At September 30, 2013, the Company owned 43 landfills, and operated, but did not own, six landfills under life-of-site operating agreements and five landfills under limited-term operating agreements. The Company’s landfills had site costs with a net book value of $1,626,169 at September 30, 2013. For the Company’s landfills operated under limited-term operating agreements and life-of-site operating agreements, the owner of the property (generally a municipality) usually owns the permit and the Company operates the landfill for a contracted term. Where the contracted term is not the life of the landfill, the property owner is generally responsible for final capping, closure and post-closure obligations. The Company is responsible for all final capping, closure and post-closure liabilities at five of the six landfills that it operates under life-of-site operating agreements.

Page 7

WASTE CONNECTIONS, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

(Dollar amounts in thousands, except share, per share, per gallon, tonnage and per ton amounts)

The Company’s internal and third-party engineers perform surveys at least annually to estimate the remaining disposal capacity at its landfills. Many of the Company’s existing landfills have the potential for expanded disposal capacity beyond the amount currently permitted. The Company’s landfill depletion rates are based on the remaining disposal capacity, considering both permitted and probable expansion airspace, at the landfills it owns, and certain landfills it operates, but does not own, under life-of-site agreements. The Company’s landfill depletion rate is based on the term of the operating agreement at its operated landfill that has capitalized expenditures. Expansion airspace consists of additional disposal capacity being pursued through means of an expansion that has not yet been permitted. Expansion airspace that meets certain criteria is included in the estimate of total landfill airspace.

Based on remaining permitted capacity as of September 30, 2013, and projected annual disposal volumes, the average remaining landfill life for the Company’s owned landfills and landfills operated under life-of-site operating agreements is estimated to be approximately 34 years. As of September 30, 2013, the Company is seeking to expand permitted capacity at eight of its owned landfills and two landfills that it operates under life-of-site operating agreements, and considers the achievement of these expansions to be probable. Although the Company cannot be certain that all future expansions will be permitted as designed, the average remaining life, when considering remaining permitted capacity, probable expansion capacity and projected annual disposal volume, of the Company’s owned landfills and landfills operated under life-of-site operating agreements is approximately 43 years, with lives ranging from approximately 6 to 201 years.

During the nine months ended September 30, 2013 and 2012, the Company expensed $60,142 and $35,219, respectively, or an average of $4.21 and $3.15 per ton consumed, respectively, related to landfill depletion at owned landfills and landfills operated under life-of-site agreements.

The Company reserves for final capping, closure and post-closure maintenance obligations at the landfills it owns and five of the six landfills it operates under life-of-site operating agreements. The Company calculates the net present value of its final capping, closure and post-closure liabilities by estimating the total obligation in current dollars, inflating the obligation based upon the expected date of the expenditure and discounting the inflated total to its present value using a credit-adjusted risk-free rate. Any changes in expectations that result in an upward revision to the estimated undiscounted cash flows are treated as a new liability and are inflated and discounted at rates reflecting current market conditions. Any changes in expectations that result in a downward revision (or no revision) to the estimated undiscounted cash flows result in a liability that is inflated and discounted at rates reflecting the market conditions at the time the cash flows were originally estimated. This policy results in the Company’s final capping, closure and post-closure liabilities being recorded in “layers.” The Company’s discount rate assumption for purposes of computing 2013 and 2012 “layers” for final capping, closure and post-closure obligations was 5.75% for each year, which reflects the Company’s long-term cost of borrowing as of the end of 2012 and 2011. The Company’s inflation rate assumption is 2.5% for the years ending December 31, 2013 and 2012. The resulting final capping, closure and post-closure obligations are recorded on the balance sheet along with an offsetting addition to site costs which is amortized to depletion expense as the remaining landfill airspace is consumed. Interest is accreted on the recorded liability using the corresponding discount rate. During the nine months ended September 30, 2013 and 2012, the Company expensed $2,077 and $1,870, respectively, or an average of $0.15 and $0.17 per ton consumed, respectively, related to final capping, closure and post-closure accretion expense.

Page 8

WASTE CONNECTIONS, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

(Dollar amounts in thousands, except share, per share, per gallon, tonnage and per ton amounts)

The following is a reconciliation of the Company’s final capping, closure and post-closure liability balance from December 31, 2012 to September 30, 2013:

Final capping, closure and post-closure liability at December 31, 2012	$	46,473
Adjustments to final capping, closure and post-closure liabilities		(3,596	)
Liabilities incurred		3,884
Accretion expense associated with landfill obligations		2,077
Closure payments		(182	)
Final capping, closure and post-closure liability at September 30, 2013	$	48,656

The Adjustments to final capping, closure and post-closure liabilities primarily consisted of increases in estimated airspace at some of the Company’s landfills at which expansions are being pursued or have been granted, decreases in estimated closure costs at some of the Company’s landfills and revisions in engineering estimates, partially offset by an increase in estimates of annual tonnage consumption at some of the Company’s landfills. The Company performs its annual review of its cost and capacity estimates in the first quarter of each year.

At September 30, 2013, $32,816 of the Company’s restricted assets balance was for purposes of securing its performance of future final capping, closure and post-closure obligations.

5. LONG-TERM DEBT

Long-term debt consists of the following:

	September 30, 2013			December 31, 2012
Revolver under credit facility, bearing interest ranging from 1.47% to 4.25%*	$	663,500		$	787,000
Term loan facility, bearing interest ranging from 2.06% to 2.70%*		720,000			800,000
2015 Notes, bearing interest at 6.22%		175,000			175,000
2016 Notes, bearing interest at 3.30%		100,000			100,000
2018 Notes, bearing interest at 4.00%		50,000			50,000
2019 Notes, bearing interest at 5.25%		175,000			175,000
2021 Notes, bearing interest at 4.64%		100,000			100,000
Tax-exempt bonds, bearing interest ranging from 0.10% to 0.35%*		35,150			35,655
Notes payable to sellers and other third parties, bearing interest at 2.5% to 10.9%*		14,470			16,280
		2,033,120			2,238,935
Less – current portion		(7,456	)		(33,968	)
	$	2,025,664		$	2,204,967

* Interest rates in the table above represent the range of interest rates incurred during the nine month period ended September 30, 2013.

Page 9

WASTE CONNECTIONS, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

(Dollar amounts in thousands, except share, per share, per gallon, tonnage and per ton amounts)

Amendment to Master Note Purchase Agreement

On August 9, 2013, the Company and certain of its subsidiaries entered into Amendment No. 4 to the Master Note Purchase Agreement, dated July 15, 2008, as amended, increasing the aggregate principal amount of notes issuable under the Master Note Purchase Agreement from $750,000 to $1,250,000, representing a $500,000 increase. The Amendment also facilitates the future issuance of floating rate notes.

The Company currently has $600,000 of Notes outstanding under the Master Note Purchase Agreement. With the execution of the Amendment, the Company will be able to sell up to $650,000 of additional Notes under and subject to the terms of the Master Note Purchase Agreement. No existing or potential note holder has any obligation to purchase additional notes under the Master Note Purchase Agreement.

Amendment and Restatement of Credit Facility

On May 6, 2013, the Company and certain of its subsidiaries entered into a Second Amended and Restated Credit Agreement (the “credit agreement”) with Bank of America, N.A., as Administrative Agent and the other lenders from time to time party thereto (the “Lenders”). The credit agreement has a scheduled maturity date of May 4, 2018.

Pursuant to the credit agreement, the Lenders have committed to provide advances up to an aggregate principal amount of $1,200,000 at any one time outstanding, and the Company has the option to request increases in the aggregate commitments provided that the aggregate commitments never exceed $1,500,000. For any such increase, the Company may ask one or more Lenders to increase their existing commitments and/or invite additional eligible lenders to become Lenders under the credit agreement. As part of the aggregate commitments under the facility, the credit agreement provides for letters of credit to be issued at the request of the Company in an aggregate amount not to exceed the aggregate commitments and for swing line loans to be issued at the request of the Company in an aggregate amount not to exceed a $25,000 sublimit.

Interest accrues on advances, at the Company’s option, at a LIBOR rate or a base rate plus an applicable margin for each interest period. The issuing fees for all letters of credit are also based on an applicable margin. The applicable margin used in connection with interest rates and fees is based on the Company’s consolidated leverage ratio. The applicable margin for LIBOR rate loans and letter of credit fees ranges from 1.125% to 1.750% and the applicable margin for base rate loans and swing line loans ranges from 0.125% to 0.750%. The Company will also pay a fee based on its consolidated leverage ratio on the actual daily unused amount of the aggregate commitments. The borrowings under the credit agreement are not collateralized. Proceeds of the borrowings under the credit agreement were used to refinance the previous credit facility, under which $680,000 was outstanding, and which had a maturity of July 2016, and future borrowings will be used for general corporate purposes, including working capital, capital expenditures and permitted acquisitions.

The credit agreement contains representations, warranties, covenants and events of default, including a change of control event of default and limitations on incurrence of indebtedness and liens, new lines of business, mergers, transactions with affiliates and restrictive agreements. The credit agreement also includes covenants limiting, as of the last day of each fiscal quarter, (a) the ratio of the consolidated funded debt as of such date to the Consolidated EBITDA (as defined in the credit agreement), measured for the preceding 12 months, to not more than 3.50 to 1.00 and (b) the ratio of Consolidated EBIT (as defined in the credit agreement) to consolidated interest expense, in each case, measured for the preceding 12 months, to not less than 2.75 to 1.00. During the continuance of an event of default, the Lenders may take a number of actions, including declaring the entire amount then outstanding under the credit agreement due and payable.

Page 10

WASTE CONNECTIONS, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

(Dollar amounts in thousands, except share, per share, per gallon, tonnage and per ton amounts)

Amendment to Term Loan Agreement

On May 6, 2013, the Company and certain of its subsidiaries entered into an amendment (the “Term Loan Amendment”) to its term loan facility, which changed the range of the additional interest margin applicable to borrowings under the term loan facility to 1.375% to 2.375%, from 1.375% to 2.500%, with respect to LIBOR borrowings and to 0.375% to 1.375%, from 0.375% to 1.500%, with respect to base rate borrowings. All other original terms remain applicable.

6. ACQUISITIONS

The Company acquired six individually immaterial non-hazardous solid waste collection businesses during the nine months ended September 30, 2013. The Company acquired Alaska Pacific Environmental Services Anchorage, LLC and Alaska Green Waste Solutions, LLC (together, “Alaska Waste”), SKB Environmental, Inc. (“SKB”) and an additional five non-hazardous solid waste collection, transfer and disposal businesses during the nine months ended September 30, 2012.

Pursuant to the SKB stock purchase agreement, the Company was required to remit additional consideration to the former shareholders of SKB if the acquired operations exceeded earnings targets specified in the stock purchase agreement over a one-year earn out period ending June 30, 2013. The Company computed the fair value of the contingent consideration at the purchase date to be $20,711, based upon probability assessments of the expected future cash flows over the one-year period in which the obligation was expected to be settled. Based upon the actual earnings of SKB over the one-year earn out period, the final additional consideration was $25,768, which the Company paid in July 2013. The difference between the final contingent consideration paid and the fair value of the contingent consideration at the purchase date was charged to expense in Other income (expense), net in the Company’s Condensed Consolidated Statements of Net Income.

The acquisitions completed during the nine months ended September 30, 2013 and 2012, were not material to the Company’s results of operations, either individually or in the aggregate. As a result, pro forma financial information has not been provided. The results of operations of the acquired businesses have been included in the Company’s condensed consolidated financial statements from their respective acquisition dates. The Company expects these acquired businesses to contribute towards the achievement of the Company’s strategy to expand through acquisitions.

Cash consideration for the acquisition of the business of R360 Environmental Solutions, Inc. (“R360”) in October 2012 included payment for the estimated net working capital of $18,906, as defined in the acquisition agreement, which was subject to final adjustment subsequent to the close of the acquisition. In March 2013, Waste Connections received $18,000 from the former owners of R360 due to the final adjustment to the net working capital that was estimated at the closing date.

During the nine months ended September 30, 2013 and 2012, the Company incurred $974 and $3,610, respectively, of acquisition-related costs. These expenses are included in Selling, general and administrative expenses in the Company’s Condensed Consolidated Statements of Net Income.

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WASTE CONNECTIONS, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

(Dollar amounts in thousands, except share, per share, per gallon, tonnage and per ton amounts)

7. INTANGIBLE ASSETS, NET

Intangible assets, exclusive of goodwill, consisted of the following at September 30, 2013:

	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Finite-lived intangible assets:
Long-term franchise agreements and contracts	$	195,878	$	(43,606	)	$	152,272
Customer lists		139,789		(55,612	)		84,177
Other		41,394		(10,282	)		31,112
		377,061		(109,500	)		267,561
Indefinite-lived intangible assets:
Solid waste collection and transportation permits		151,505		—			151,505
Material recycling facility permits		42,283		—			42,283
E&P facility permits		59,855		—			59,855
		253,643		—			253,643
Intangible assets, exclusive of goodwill	$	630,704	$	(109,500	)	$	521,204

The weighted-average amortization period of customer lists acquired during the nine months ended September 30, 2013 was 6.7 years.

Intangible assets, exclusive of goodwill, consisted of the following at December 31, 2012:

	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Finite-lived intangible assets:
Long-term franchise agreements and contracts	$	198,779	$	(38,447	)	$	160,332
Customer lists		139,354		(43,457	)		95,897
Other		41,472		(9,436	)		32,036
		379,605		(91,340	)		288,265
Indefinite-lived intangible assets:
Solid waste collection and transportation permits		151,505		—			151,505
Material recycling facility permits		42,283		—			42,283
E&P facility permits		59,855		—			59,855
		253,643		—			253,643
Intangible assets, exclusive of goodwill	$	633,248	$	(91,340	)	$	541,908

Estimated future amortization expense for the next five years of finite-lived intangible assets is as follows:

For the year ending December 31, 2013	$	25,061
For the year ending December 31, 2014	$	24,410
For the year ending December 31, 2015	$	23,759
For the year ending December 31, 2016	$	19,807
For the year ending December 31, 2017	$	17,835

8. SEGMENT REPORTING

The Company’s revenues are generated from the collection, transfer, recycling and disposal of non-hazardous solid waste and the treatment, recovery and disposal of non-hazardous E&P waste. No single contract or customer accounted for more than 10% of the Company’s total revenues at the consolidated or reportable segment level during the periods presented.

Page 12

WASTE CONNECTIONS, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

(Dollar amounts in thousands, except share, per share, per gallon, tonnage and per ton amounts)

Prior to October 2012, the Company managed its operations through three geographic operating segments (Western, Central and Eastern), which were also its reportable segments. In October 2012, as a result of the R360 acquisition, the Company realigned its reporting structure and created a fourth operating segment, the E&P segment, which includes the majority of the Company’s E&P waste treatment and disposal operations. As a result, the Company’s three geographic operating segments and its E&P segment comprise the Company’s reportable segments. Additionally, in January 2013, the Company transferred an E&P operation in Louisiana, owned by the Company prior to the R360 acquisition, from its Central segment to its E&P segment. Each operating segment is responsible for managing several vertically integrated operations, which are comprised of districts. The segment information presented herein reflects the addition of the new E&P segment and the transfer of the Company’s E&P operation in Louisiana to the E&P segment. Under the current structure, the Company’s Western segment is comprised of operating locations in Alaska, California, Idaho, Montana, Nevada, Oregon, Washington and western Wyoming; the Company’s Central segment is comprised of operating locations in Arizona, Colorado, Kansas, Louisiana, Minnesota, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, Utah and eastern Wyoming; and the Company’s Eastern segment is comprised of operating locations in Alabama, Illinois, Iowa, Kentucky, Massachusetts, Michigan, Mississippi, New York, North Carolina, South Carolina and Tennessee. The E&P segment is comprised of the Company’s E&P operations in Louisiana, New Mexico, North Dakota, Oklahoma, Texas, Wyoming and along the Gulf of Mexico.

The Company’s Chief Operating Decision Maker (“CODM”) evaluates operating segment profitability and determines resource allocations based on several factors, of which the primary financial measure is EBITDA. The Company defines EBITDA as earnings before interest, taxes, depreciation, amortization, gain (loss) on disposal of assets, loss on prior office leases and other income (expense). EBITDA is not a measure of operating income, operating performance or liquidity under GAAP and may not be comparable to similarly titled measures reported by other companies. The Company’s management uses EBITDA in the evaluation of segment operating performance as it is a profit measure that is generally within the control of the operating segments. A reconciliation of EBITDA to Income before income tax provision is included at the end of this Note 8.

Summarized financial information concerning the Company’s reportable segments for the three and nine months ended September 30, 2013 and 2012, is shown in the following tables:

Three Months Ended September 30, 2013	Gross Revenues		Intercompany Revenues(b)			Net Revenues		EBITDA(c)
Western	$	236,849	$	(26,638	)	$	210,211	$	67,773
Central		151,181		(16,848	)		134,333		48,845
Eastern		115,944		(19,884	)		96,060		28,038
E&P		65,376		(2,334	)		63,042		31,125
Corporate(a)		—		—			—		188
	$	569,350	$	(65,704	)	$	503,646	$	175,969

Page 13

WASTE CONNECTIONS, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

(Dollar amounts in thousands, except share, per share, per gallon, tonnage and per ton amounts)

Three Months Ended September 30, 2012	Gross Revenues		Intercompany Revenues(b)			Net Revenues		EBITDA(c)
Western	$	228,906	$	(24,943	)	$	203,963	$	61,119
Central		139,802		(14,007	)		125,795		47,072
Eastern		112,753		(19,995	)		92,758		26,113
E&P		3,138		—			3,138		2,122
Corporate(a)		—		—			—		(1,992	)
	$	484,599	$	(58,945	)	$	425,654	$	134,434

Nine Months Ended September 30, 2013	Gross Revenues		Intercompany Revenues(b)			Net Revenues		EBITDA(c)
Western	$	682,705	$	(76,510	)	$	606,195	$	188,736
Central		426,353		(46,993	)		379,360		137,600
Eastern		336,916		(57,362	)		279,554		82,947
E&P		186,255		(8,446	)		177,809		82,036
Corporate(a)		—		—			—		(2,679	)
	$	1,632,229	$	(189,311	)	$	1,442,918	$	488,640

Nine Months Ended September 30, 2012	Gross Revenues		Intercompany Revenues(b)			Net Revenues		EBITDA(c)
Western	$	660,679	$	(74,513	)	$	586,166	$	173,810
Central		384,520		(42,215	)		342,305		122,688
Eastern		332,883		(57,452	)		275,431		77,879
E&P		8,913		—			8,913		6,011
Corporate(a)		—		—			—		(9,823	)
	$	1,386,995	$	(174,180	)	$	1,212,815	$	370,565

(a) Corporate functions include accounting, legal, tax, treasury, information technology, risk management, human resources, training and other administrative functions. Amounts reflected are net of allocations to the four operating segments.

(b) Intercompany revenues reflect each segment’s total intercompany sales, including intercompany sales within a segment and between segments. Transactions within and between segments are generally made on a basis intended to reflect the market value of the service.

(c) For those items included in the determination of EBITDA, the accounting policies of the segments are the same as those described in the Company’s most recent Annual Report on Form 10-K.

Page 14

WASTE CONNECTIONS, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

(Dollar amounts in thousands, except share, per share, per gallon, tonnage and per ton amounts)

The following tables show changes in goodwill during the nine months ended September 30, 2013 and 2012, by reportable segment:

	Western			Central			Eastern		E&P		Total
Balance as of December 31, 2012	$	373,143		$	430,412		$	380,561	$	452,441	$	1,636,557
Goodwill transferred		—			(9,196	)		—		9,196		—
Goodwill acquired		521			70			567		575		1,733
Goodwill divested		(749	)		—			—		—		(749	)
Balance as of September 30, 2013	$	372,915		$	421,286		$	381,128	$	462,212	$	1,637,541

	Western		Central			Eastern		E&P		Total
Balance as of December 31, 2011	$	313,038	$	424,223		$	379,627	$	—	$	1,116,888
Goodwill acquired		60,043		6,690			238		—		66,971
Goodwill divested		—		(496	)		—		—		(496	)
Balance as of September 30, 2012	$	373,081	$	430,417		$	379,865	$	—	$	1,183,363

The Company has no accumulated impairment losses associated with goodwill.

A reconciliation of the Company’s primary measure of segment profitability (EBITDA) to Income before income tax provision in the Condensed Consolidated Statements of Net Income is as follows:

	Three months ended September 30,						Nine months ended September 30,
	2013			2012			2013			2012
Western segment EBITDA	$	67,773		$	61,119		$	188,736		$	173,810
Central segment EBITDA		48,845			47,072			137,600			122,688
Eastern segment EBITDA		28,038			26,113			82,947			77,879
E&P segment EBITDA		31,125			2,122			82,036			6,011
Subtotal reportable segments		175,781			136,426			491,319			380,388
Unallocated corporate overhead		188			(1,992	)		(2,679	)		(9,823	)
Depreciation		(55,863	)		(42,313	)		(162,277	)		(119,331	)
Amortization of intangibles		(6,211	)		(6,267	)		(18,861	)		(18,115	)
Gain (loss) on disposal of assets		1,129			(244	)		(1,993	)		(715	)
Gain (loss) on prior office leases		596			—			(9,902	)		—
Gain from litigation settlement		—			3,537			—			3,537
Interest expense		(17,911	)		(11,949	)		(55,851	)		(36,063	)
Other income (expense), net		845			825			(119	)		1,663
Income before income tax provision	$	98,554		$	78,023		$	239,637		$	201,541

Page 15

WASTE CONNECTIONS, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

(Dollar amounts in thousands, except share, per share, per gallon, tonnage and per ton amounts)

The following table shows, for the periods indicated, the Company’s total reported revenues by service line and with intercompany eliminations:

	Three months ended September 30,						Nine months ended September 30,
	2013			2012			2013			2012
Solid waste collection	$	312,872		$	304,166		$	912,488		$	880,920
Solid waste disposal and transfer		158,142			142,293			434,513			390,576
E&P waste treatment, disposal and recovery		68,605			5,824			194,720			15,458
Solid waste recycling		18,402			18,712			55,806			61,809
Intermodal and other		11,329			13,604			34,702			38,232
		569,350			484,599			1,632,229			1,386,995
Less: intercompany elimination		(65,704	)		(58,945	)		(189,311	)		(174,180	)
Total revenues	$	503,646		$	425,654		$	1,442,918		$	1,212,815

9. DERIVATIVE FINANCIAL INSTRUMENTS

The Company recognizes all derivatives on the balance sheet at fair value. All of the Company’s derivatives have been designated as cash flow hedges; therefore, the effective portion of the changes in the fair value of derivatives will be recognized in accumulated other comprehensive loss (“AOCL”) until the hedged item is recognized in earnings. The ineffective portion of the changes in the fair value of derivatives will be immediately recognized in earnings. The Company classifies cash inflows and outflows from derivatives within operating activities in the Condensed Consolidated Statements of Cash Flows.

One of the Company’s objectives for utilizing derivative instruments is to reduce its exposure to fluctuations in cash flows due to changes in the variable interest rates of certain borrowings issued under its revolving credit facility. The Company’s strategy to achieve that objective involves entering into interest rate swaps that are specifically designated to the Company’s revolving credit facility and accounted for as cash flow hedges.

At September 30, 2013, the Company’s derivative instruments included three interest rate swap agreements as follows:

Date Entered	Notional Amount		Fixed Interest Rate Paid*			Variable Interest Rate Received		Effective Date		Expiration Date
March 2009	$	175,000		2.85	%		1-month LIBOR		February 2011		February 2014
August 2011	$	150,000		0.80	%		1-month LIBOR		April 2012		January 2015
December 2011	$	175,000		1.60	%		1-month LIBOR		February 2014		February 2017

* plus applicable margin.

Another of the Company’s objectives for utilizing derivative instruments is to reduce its exposure to fluctuations in cash flows due to changes in the price of diesel fuel. The Company’s strategy to achieve that objective involves periodically entering into fuel hedges that are specifically designated to certain forecasted diesel fuel purchases and accounted for as cash flow hedges.

Page 16

WASTE CONNECTIONS, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

(Dollar amounts in thousands, except share, per share, per gallon, tonnage and per ton amounts)

At September 30, 2013, the Company’s derivative instruments included one fuel hedge agreement as follows:

Date Entered	Notional Amount (in gallons per month)		Diesel Rate Paid Fixed (per gallon)		Diesel Rate Received Variable	Effective Date	Expiration Date
June 2012		300,000	$	3.60	DOE Diesel Fuel Index*	January 2014	December 2015

* If the national U.S. on-highway average price for a gallon of diesel fuel (“average price”), as published by the Department of Energy (“DOE”), exceeds the contract price per gallon, the Company receives the difference between the average price and the contract price (multiplied by the notional number of gallons) from the counterparty. If the average price is less than the contract price per gallon, the Company pays the difference to the counterparty.

The fair values of derivative instruments designated as cash flow hedges as of September 30, 2013, were as follows:

Derivatives Designated as Cash	Asset Derivatives			Liability Derivatives
Flow Hedges	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
Interest rate swaps				Accrued liabilities(a)	$	(3,940	)
				Other long-term liabilities		(2,506	)
Fuel hedge	Prepaid expenses and other current assets(b)	$	701
	Other assets, net		972
Total derivatives designated as cash flow hedges		$	1,673		$	(6,446	)

(a) Represents the estimated amount of the existing unrealized losses on interest rate swaps as of September 30, 2013 (based on the interest rate yield curve at that date), included in AOCL expected to be reclassified into pre-tax earnings within the next 12 months. The actual amounts reclassified into earnings are dependent on future movements in interest rates.

(b) Represents the estimated amount of the existing unrealized gains on the fuel hedge as of September 30, 2013 (based on the forward DOE diesel fuel index curve at that date), included in AOCL expected to be reclassified into pre-tax earnings within the next 12 months. The actual amounts reclassified into earnings are dependent on future movements in diesel fuel prices.

The fair values of derivative instruments designated as cash flow hedges as of December 31, 2012, were as follows:

Derivatives Designated as Cash	Asset Derivatives			Liability Derivatives
Flow Hedges	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
Interest rate swaps				Accrued liabilities	$	(5,374	)
				Other long-term liabilities		(5,789	)
Fuel hedge	Other assets, net	$	1,187
Total derivatives designated as cash flow hedges		$	1,187		$	(11,163	)

Page 17

WASTE CONNECTIONS, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

(Dollar amounts in thousands, except share, per share, per gallon, tonnage and per ton amounts)

The following table summarizes the impact of the Company’s cash flow hedges on the results of operations, comprehensive income and AOCL for the three and nine months ended September 30, 2013 and 2012:

Derivatives Designated as Cash Flow Hedges	Amount of Gain or (Loss) Recognized as AOCL on Derivatives, Net of Tax (Effective Portion)(a)						Statement of Income Classification	Amount of (Gain) or Loss Reclassified from AOCL into Earnings, Net of Tax  (Effective Portion) (b),(c)
	Three Months Ended September 30,							Three Months Ended September 30,
	2013			2012				2013		2012
Interest rate swaps	$	(809	)	$	(1,497	)	Interest expense	$	879	$	855
Fuel hedge		271			1,105		Cost of operations		—		(678	)
Total	$	(538	)	$	(392	)		$	879	$	177

Derivatives Designated as Cash Flow Hedges	Amount of Gain or (Loss) Recognized as AOCL on Derivatives, Net of Tax (Effective  Portion)(a)					Statement of Income Classification	Amount of (Gain) or Loss Reclassified from AOCL into Earnings, Net of Tax  (Effective Portion) (b),(c)
	Nine Months Ended September 30,						Nine Months Ended September 30,
	2013		2012				2013		2012
Interest rate swaps	$	323	$	(4,469	)	Interest expense	$	2,595	$	2,409
Fuel hedge		300		1,522		Cost of operations		—		(2,062	)
Total	$	623	$	(2,947	)		$	2,595	$	347

(a) In accordance with the derivatives and hedging guidance, the effective portions of the changes in fair values of interest rate swaps and the fuel hedge have been recorded in equity as a component of AOCL. As the critical terms of the interest rate swaps match the underlying debt being hedged, no ineffectiveness is recognized on these swaps and, therefore, all unrealized changes in fair value are recorded in AOCL. Because changes in the actual price of diesel fuel and changes in the DOE index price do not offset exactly each reporting period, the Company assesses whether the fuel hedge is highly effective using the cumulative dollar offset approach.

(b) Amounts reclassified from AOCL into earnings related to realized gains and losses on interest rate swaps are recognized when interest payments or receipts occur related to the swap contracts, which correspond to when interest payments are made on the Company’s hedged debt.

(c) Amounts reclassified from AOCL into earnings related to realized gains and losses on the fuel hedge are recognized when settlement payments or receipts occur related to the hedge contract, which correspond to when the underlying fuel is consumed.

The Company measures and records ineffectiveness on the fuel hedge in Cost of operations in the Condensed Consolidated Statements of Net Income on a monthly basis based on the difference between the DOE index price and the actual price of diesel fuel purchased, multiplied by the notional number of gallons on the contract. There was no significant ineffectiveness recognized on the fuel hedge during the nine months ended September 30, 2012.

See Note 13 for further discussion on the impact of the Company’s hedge accounting to its consolidated Comprehensive income and AOCL.

Page 18

WASTE CONNECTIONS, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

(Dollar amounts in thousands, except share, per share, per gallon, tonnage and per ton amounts)

10. FAIR VALUE OF FINANCIAL INSTRUMENTS

The Company’s financial instruments consist primarily of cash and equivalents, trade receivables, restricted assets, trade payables, debt instruments, contingent consideration obligations, interest rate swaps and a fuel hedge. As of September 30, 2013 and December 31, 2012, the carrying values of cash and equivalents, trade receivables, restricted assets, trade payables and contingent consideration are considered to be representative of their respective fair values. The carrying values of the Company’s debt instruments, excluding certain notes as listed in the table below, approximate their fair values as of September 30, 2013 and December 31, 2012, based on current borrowing rates, current remaining average life to maturity and borrower credit quality for similar types of borrowing arrangements, and are classified as Level 2 within the fair value hierarchy. The carrying values and fair values of the Company’s debt instruments where the carrying values do not approximate their fair values as of September 30, 2013 and December 31, 2012, are as follows:

	Carrying Value at				Fair Value* at
	September 30, 2013		December 31, 2012		September 30, 2013		December 31, 2012
6.22% Senior Notes due 2015	$	175,000	$	175,000	$	188,888	$	193,949
3.30% Senior Notes due 2016	$	100,000	$	100,000	$	102,274	$	103,068
4.00% Senior Notes due 2018	$	50,000	$	50,000	$	51,371	$	52,476
5.25% Senior Notes due 2019	$	175,000	$	175,000	$	188,055	$	195,584
4.64% Senior Notes due 2021	$	100,000	$	100,000	$	102,541	$	107,418

* Senior Notes are classified as Level 2 within the fair value hierarchy. Fair value is based on quotes of bonds with similar ratings in similar industries.

For details on the fair value of the Company’s interest rate swaps, fuel hedge and restricted assets, refer to Note 12.

11. NET INCOME PER SHARE INFORMATION

The following table sets forth the calculation of the numerator and denominator used in the computation of basic and diluted net income per common share attributable to the Company’s common stockholders for the three and nine months ended September 30, 2013 and 2012:

	Three months ended September 30,				Nine months ended September 30,
	2013		2012		2013		2012
Numerator:
Net income attributable to Waste Connections for basic and diluted earnings per share	$	60,706	$	49,385	$	146,229	$	123,104
Denominator:
Basic shares outstanding		123,676,936		123,031,259		123,557,317		120,571,106
Dilutive effect of stock options and warrants		182,175		303,293		192,054		319,457
Dilutive effect of restricted stock units		420,555		331,037		340,051		308,338
Diluted shares outstanding		124,279,666		123,665,589		124,089,422		121,198,901

For the three months ended September 30, 2013 and 2012, stock options and warrants to purchase 493 and 78,545 shares of common stock, respectively, were excluded from the computation of diluted earnings per share as they were anti-dilutive. For the nine months ended September 30, 2013 and 2012, stock options and warrants to purchase 1,533 and 72,324 shares of common stock, respectively, were excluded from the computation of diluted earnings per share as they were anti-dilutive.

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(Unaudited)

(Dollar amounts in thousands, except share, per share, per gallon, tonnage and per ton amounts)

12. FAIR VALUE MEASUREMENTS

The Company uses a three-tier fair value hierarchy to classify and disclose all assets and liabilities measured at fair value on a recurring basis, as well as assets and liabilities measured at fair value on a non-recurring basis, in periods subsequent to their initial measurement. These tiers include: Level 1, defined as quoted market prices in active markets for identical assets or liabilities; Level 2, defined as inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active, model-based valuation techniques for which all significant assumptions are observable in the market, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities; and Level 3, defined as unobservable inputs that are not corroborated by market data.

The Company’s financial assets and liabilities recorded at fair value on a recurring basis include derivative instruments and restricted assets. The Company’s derivative instruments are pay-fixed, receive-variable interest rate swaps and a pay-fixed, receive-variable diesel fuel hedge. The Company’s interest rate swaps are recorded at their estimated fair values based on quotes received from financial institutions that trade these contracts. The Company verifies the reasonableness of these quotes using similar quotes from another financial institution as of each date for which financial statements are prepared. The Company uses a discounted cash flow (“DCF”) model to determine the estimated fair value of the diesel fuel hedge. The assumptions used in preparing the DCF model include: (i) estimates for the forward DOE index curve; and (ii) the discount rate based on risk-free interest rates over the term of the hedge contract. The DOE index curve used in the DCF model was obtained from financial institutions that trade these contracts and ranged from $3.77 to $3.90 at September 30, 2013 and from $3.68 to $3.87 at December 31, 2012. The weighted average DOE index curve used in the DCF model was $3.84 and $3.77 at September 30, 2013 and December 31, 2012, respectively. Significant increases (decreases) in the forward DOE index curve would result in a significantly higher (lower) fair value measurement. For the Company’s interest rate swaps and fuel hedge, the Company also considers the Company’s creditworthiness in its determination of the fair value measurement of these instruments in a net liability position and the banks’ creditworthiness in its determination of the fair value measurement of these instruments in a net asset position. The Company’s restricted assets are valued at quoted market prices in active markets for identical assets, which the Company receives from the financial institutions that hold such investments on its behalf. The Company’s restricted assets measured at fair value are invested primarily in U.S. government and agency securities.

The Company’s assets and liabilities measured at fair value on a recurring basis at September 30, 2013 and December 31, 2012, were as follows:

	Fair Value Measurement at September 30, 2013 Using
	Total			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
Interest rate swap derivative instruments – net liability position	$	(6,446	)	$	—	$	(6,446	)	$	—
Fuel hedge derivative instrument – net asset position	$	1,673		$	—	$	—		$	1,673
Restricted assets	$	34,157		$	34,157	$	—		$	—

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	Fair Value Measurement at December 31, 2012 Using
	Total			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
Interest rate swap derivative instruments – net liability position	$	(11,163	)	$	—	$	(11,163	)	$	—
Fuel hedge derivative instrument – net asset position	$	1,187		$	—	$	—		$	1,187
Restricted assets	$	33,425		$	33,425	$	—		$	—

The following table summarizes the change in the fair value for Level 3 derivatives for the nine months ended September 30, 2013:

	Level 3 Derivatives
Balance as of December 31, 2012	$	1,187
Unrealized gains included in AOCL		486
Balance as of September 30, 2013	$	1,673

The following table summarizes the change in the fair value for Level 3 derivatives for the nine months ended September 30, 2012:

	Level 3 Derivatives
Balance as of December 31, 2011	$	3,506
Realized gains included in earnings		(3,327	)
Unrealized gains included in AOCL		2,455
Balance as of September 30, 2012	$	2,634

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(Dollar amounts in thousands, except share, per share, per gallon, tonnage and per ton amounts)

13. OTHER COMPREHENSIVE INCOME (LOSS)

Other comprehensive income (loss) includes changes in the fair value of interest rate swaps and the fuel hedge that qualify for hedge accounting. The components of other comprehensive income (loss) and related tax effects for the three and nine month periods ended September 30, 2013 and 2012, are as follows:

	Three months ended September 30, 2013
	Gross			Tax effect			Net of tax
Interest rate swap amounts reclassified into interest expense	$	1,424		$	(545	)	$	879
Changes in fair value of interest rate swaps		(1,310	)		501			(809	)
Changes in fair value of fuel hedge		438			(167	)		271
	$	552		$	(211	)	$	341

	Three months ended September 30, 2012
	Gross			Tax effect			Net of tax
Interest rate swap amounts reclassified into interest expense	$	1,380		$	(525	)	$	855
Fuel hedge amounts reclassified into cost of operations		(1,093	)		415			(678	)
Changes in fair value of interest rate swaps		(2,415	)		918			(1,497	)
Changes in fair value of fuel hedge		1,782			(677	)		1,105
	$	(346	)	$	131		$	(215	)

	Nine months ended September 30, 2013
	Gross		Tax effect			Net of tax
Interest rate swap amounts reclassified into interest expense	$	4,203	$	(1,608	)	$	2,595
Changes in fair value of interest rate swaps		514		(191	)		323
Changes in fair value of fuel hedge		486		(186	)		300
	$	5,203	$	(1,985	)	$	3,218

	Nine months ended September 30, 2012
	Gross			Tax effect			Net of tax
Interest rate swap amounts reclassified into interest expense	$	3,886		$	(1,477	)	$	2,409
Fuel hedge amounts reclassified into cost of operations		(3,327	)		1,265			(2,062	)
Changes in fair value of interest rate swaps		(7,208	)		2,739			(4,469	)
Changes in fair value of fuel hedge		2,455			(933	)		1,522
	$	(4,194	)	$	1,594		$	(2,600	)

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(Unaudited)

(Dollar amounts in thousands, except share, per share, per gallon, tonnage and per ton amounts)

A rollforward of the amounts included in AOCL, net of taxes, is as follows:

	Fuel Hedge		Interest Rate Swaps			Accumulated Other Comprehensive Loss
Balance at December 31, 2012	$	732	$	(6,897	)	$	(6,165	)
Amounts reclassified into earnings		—		2,595			2,595
Changes in fair value		300		323			623
Balance at September 30, 2013	$	1,032	$	(3,979	)	$	(2,947	)

See Note 9 for further discussion on the Company’s derivative instruments.

14. STOCKHOLDERS’ EQUITY

Sale of Common Stock

On February 27, 2012, the Company entered into an underwriting agreement with Morgan Stanley & Co. LLC, in connection with the offer and sale by the Company of 12,000,000 shares of its common stock, par value $0.01 per share. The shares of common stock were sold to Morgan Stanley & Co. LLC at a price of $30.83 per share. The offering closed on March 2, 2012. The Company received net proceeds from this offering of $369,584 after deducting transaction expenses paid by the Company of approximately $376.

Stock-Based Compensation

A summary of activity related to restricted stock units under the Third Amended and Restated 2004 Equity Incentive Plan during the nine month period ended September 30, 2013, is presented below:

	Unvested Shares
Outstanding at December 31, 2012		1,317,798
Granted		574,017
Forfeited		(41,959	)
Vested and Issued		(480,903	)
Vested and Unissued		(61,518	)
Outstanding at September 30, 2013		1,307,435

The weighted average grant-date fair value per share for the shares of common stock underlying the restricted stock units granted during the nine month period ended September 30, 2013 was $34.06.

Share Repurchase Program

The Company’s Board of Directors has authorized a common stock repurchase program for the repurchase of up to $1,200,000 of common stock through December 31, 2014. Under the program, stock repurchases may be made in the open market or in privately negotiated transactions from time to time at management’s discretion. The timing and amounts of any repurchases will depend on many factors, including the Company’s capital structure, the market price of the common stock and overall market conditions. During the nine months ended September 30, 2013, the Company did not repurchase any shares of its common stock. During the nine months ended September 30, 2012, the Company repurchased 619,447 shares of its common stock under this program at a cost of $18,597. As of September 30, 2013, the remaining maximum dollar value of shares available for repurchase under the program was approximately $415,960. The Company’s policy related to repurchases of its common stock is to charge any excess of cost over par value entirely to additional paid-in capital.

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(Unaudited)

(Dollar amounts in thousands, except share, per share, per gallon, tonnage and per ton amounts)

Cash Dividend

In October 2012, the Company announced that its Board of Directors increased its regular quarterly cash dividend by $0.01, from $0.09 to $0.10 per share. Cash dividends of $37,005 and $32,182 were paid during the nine months ended September 30, 2013 and 2012, respectively.

15. OFFICE RELOCATIONS

In December 2011, the Company commenced a relocation of its corporate headquarters from Folsom, California to The Woodlands, Texas, which was substantially completed in 2013. Costs related to personnel and office relocation expenses are recorded in Selling, general and administrative expenses in the Condensed Consolidated Statements of Net Income. In addition, the Company incurred a loss on its prior office leases of $9,902 during the nine months ended September 30, 2013 due to the cessation of use of its former corporate headquarters in Folsom, California and its E&P segment’s former regional offices in Houston, Texas. In October 2013, the Company remitted a payment to terminate the remaining lease obligation of its former headquarters in Folsom, California. These costs are recorded in Loss on prior office leases in the Condensed Consolidated Statements of Net Income.

16. GAIN FROM LITIGATION SETTLEMENT

In November 2010, the Company’s subsidiary, Potrero Hills Landfill, Inc. (“PHLF”), which owns and operates the Potrero Hills Landfill in Solano County, California, initiated contractual arbitration proceedings with Judicial Arbitration and Mediation Services, Inc. in San Francisco against The Ratto Group of Companies, Inc. (“Ratto”) alleging Ratto’s breach of the parties’ Solid Waste Disposal Agreement.

The case was arbitrated in February and March 2012 before the Honorable Fern Smith (ret.). On August 13, 2012, Judge Smith issued her Final Award finding that Ratto had breached the Solid Waste Disposal Agreement by failing to include PHLF in its 2010 bid to Sonoma County and awarding PHLF lost profits, attorneys’ fees and costs. Pursuant to this Final Award, on September 13, 2012, Ratto remitted to PHLF $3,537, which was recorded as Gain from litigation settlement in the Condensed Consolidated Statements of Net Income.

17. COMMITMENTS AND CONTINGENCIES

In the normal course of its business and as a result of the extensive governmental regulation of the solid waste and E&P waste industries, the Company is subject to various judicial and administrative proceedings involving federal, state or local agencies. In these proceedings, an agency may seek to impose fines on the Company or to revoke or deny renewal of an operating permit held by the Company. From time to time, the Company may also be subject to actions brought by special interest or other groups, adjacent landowners or residents in connection with the permitting and licensing of landfills, transfer stations, and E&P waste treatment, recovery and disposal operations, or alleging environmental damage or violations of the permits and licenses pursuant to which the Company operates.

In addition, the Company is a party to various claims and suits pending for alleged damages to persons and property, alleged violations of certain laws and alleged liabilities arising out of matters occurring during the normal operation of the waste management business. Except as noted in the matters described below, as of September 30, 2013, there is no current proceeding or litigation involving the Company or its property that the Company believes could have a material adverse impact on its business, financial condition, results of operations or cash flows.

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(Unaudited)

(Dollar amounts in thousands, except share, per share, per gallon, tonnage and per ton amounts)

Chaparral, New Mexico Landfill Permit Litigation

The Company’s subsidiary, High Desert Solid Waste Facility, Inc. (formerly known as Rhino Solid Waste, Inc.) (“HDSWF”), owns undeveloped property in Chaparral, New Mexico, for which it sought a permit to operate a municipal solid waste landfill. The New Mexico Environment Department (the “Department”) approved the permit for the facility on January 30, 2002. Colonias Development Council (“CDC”), a nonprofit organization, appealed the Department’s decision to the courts of New Mexico, primarily on the grounds that the Department failed to consider the social impact of the landfill on the community of Chaparral, and failed to consider regional planning issues. On July 18, 2005, in Colonias Dev. Council v. Rhino Envtl. Servs., Inc. (In re Rhino Envtl. Servs.), 2005 NMSC 24, 117 P.3d 939, the New Mexico Supreme Court remanded the matter back to the Department to conduct a limited public hearing on certain evidence that CDC claimed was wrongfully excluded from consideration by the hearing officer, and to allow the Department to reconsider the evidence already proffered concerning the impact of the landfill on the surrounding community’s quality of life. In July 2007, the Department, CDC, the Company and Otero County signed a stipulation requesting a postponement of the limited public hearing to allow the Company time to explore a possible relocation of the landfill to a new site. Since 2007, the Department has issued several orders postponing the limited public hearing, and on October 17, 2012, it granted a request by the parties to hold the limited public hearing in abeyance until further notice.

In July 2009, HDSWF purchased approximately 325 acres of undeveloped land comprising a proposed new site from the State of New Mexico. HDSWF filed a formal landfill permit application for the new site with the Department on September 17, 2010. On September 12, 2011, the Department deemed the permit application complete and a public hearing on the matter had been tentatively scheduled for April 9, 2012 in Chaparral, New Mexico. On November 9, 2011, HDSWF filed a motion with the Department to hold in abeyance indefinitely the notice for public hearing and the permit hearing, and HDSWF agreed to provide the Department with at least 120 days’ prior notice of any desired, future permit hearing. The Department granted the motion. HDSWF requested the abeyance to defer capital expenditures related to permitting the new site until mid to late 2014, when HDSWF expects to have a better understanding of several current market conditions and regulatory factors that affect the timing and feasibility of the project. These conditions and factors include: the status of the Company’s Solid Waste Disposal and Operating Agreement for the collection and disposal of solid waste generated within the City of El Paso, effective April 28, 2004, which has a 10-year term; the status of El Paso Disposal, LP’s Solid Waste Franchise Agreement for the collection of solid waste generated within the City of El Paso, effective September 1, 2011, which has a 40-month term; whether the City of El Paso implements flow control in September 2014 directing waste collected within its boundaries to City-owned disposal facilities; and whether certain closed or non-operating disposal facilities in the El Paso market area are reopened and whether those facilities are operated by private or public entities.

At September 30, 2013, the Company had $11,778 of capitalized expenditures related to this landfill development project. Depending on the outcome of the market conditions and regulatory factors described above, the Company may decide in mid to late 2014 to abandon the project and expense the $11,778 of capitalized expenditures, less the recoverable value of the undeveloped properties and other amounts recovered, which would likely have a material adverse effect on the Company’s results of operations for that period. Alternatively, if the outcome of the market conditions and regulatory factors described above is such that the Company believes the market for disposal of solid waste generated in the City of El Paso will remain competitive, HDSWF may decide in mid to late 2014 to resume its permitting process for the new site. Under those circumstances, if the Department ultimately denies the landfill permit application for the new site,

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HDSWF intends to actively resume its efforts to enforce the previously issued landfill permit for the original site in Chaparral. If the Company is ultimately issued a permit to operate the landfill at the new site purchased in July 2009, the Company will be required to expense in a future period $10,324 of capitalized expenditures related to the original Chaparral property, less the recoverable value of that undeveloped property and other amounts recovered, which would likely have a material adverse effect on the Company’s results of operations for that period. If the Company instead is ultimately issued a permit to operate the landfill at the original Chaparral property, the Company will be required to expense in a future period $1,454 of capitalized expenditures related to the new site purchased in July 2009, less the recoverable value of that undeveloped property and other amounts recovered. If the Company is not ultimately issued a permit to operate the landfill at either one of the two sites, the Company will be required to expense in a future period the $11,778 of capitalized expenditures, less the recoverable value of the undeveloped properties and other amounts recovered, which would likely have a material adverse effect on the Company’s results of operations for that period.

Harper County, Kansas Landfill Permit Litigation

The Company opened a municipal solid waste landfill in Harper County, Kansas in January 2006, following the issuance by the Kansas Department of Health and Environment (“KDHE”) of a permit to operate the landfill. The landfill has operated continuously since that time. In 2005, landfill opponents (the “Plaintiffs”) filed a suit (Board of Comm’rs of Sumner County, Kansas, Tri-County Concerned Citizens and Dalton Holland v. Roderick Bremby, Sec’y of the Kansas Dep’t of Health and Env’t, et al.) in the District Court of Shawnee County, Kansas, seeking a judicial review of KDHE’s decision to issue the permit, alleging that a site analysis prepared for the Company and submitted to KDHE as part of the process leading to the issuance of the permit was deficient in several respects. The action sought to stay the effectiveness of the permit and to nullify it. The Company intervened in this lawsuit shortly after it was filed. In June 2012, the District Court denied the Plaintiffs’ demand for revocation of the permit, and affirmed KDHE’s decision that the issuance of the permit met all applicable regulatory requirements. The Plaintiffs filed an appeal with the Kansas Court of Appeals. On September 13, 2013, the Kansas Court of Appeals affirmed KDHE’s issuance of the landfill permit to the Company. On October 15, 2013, the Plaintiffs petitioned the Kansas Supreme Court to review the decision of the Court of Appeals, which review is discretionary. The Company believes that it will ultimately prevail in this matter, and the Company will continue to have the right to operate the landfill during the pendency of any further appeal. Only in the event that a final, materially adverse determination with respect to the permit is received would there likely be a material adverse effect on the Company’s reported results of operations in the future. If as a result of this litigation, after exhausting all appeals, the Company was unable to continue to operate the landfill, the Company estimates that it would be required to record a pre-tax impairment charge of approximately $18,700 to reduce the carrying value of the landfill to its estimated fair value. In addition, the Company estimates the current annual impact to its pre-tax earnings that would result if it was unable to continue to operate the landfill would be approximately $6,700 per year.

Solano County, California Measure E/Landfill Expansion Litigation

The Company and one of its subsidiaries, Potrero Hills Landfill, Inc. (“PHLF”), were named as real parties in interest in an amended complaint captioned Sustainability, Parks, Recycling and Wildlife Legal Defense Fund v. County of Solano, which was filed in the Superior Court of California, County of Solano, on July 9, 2009 (the original complaint was filed on June 12, 2009). This lawsuit seeks to compel Solano County to comply with Measure E, a ballot initiative and County ordinance passed in 1984 that the County has not enforced against PHLF since at least 1992. Measure E directs in part that Solano County shall not allow the importation into the County of any solid waste which originated or was collected outside the County in excess of 95,000 tons per year. PHLF accepts for disposal, beneficial reuse and recycling approximately 935,000 tons of solid waste annually, approximately 787,000 tons of which originate from sources outside of Solano County. The Sustainability, Parks, Recycling and Wildlife Legal Defense Fund (“SPRAWLDEF”) lawsuit also seeks to

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(Unaudited)

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overturn Solano County’s approval of the use permit for the expansion of the Potrero Hills Landfill and the related Environmental Impact Report (“EIR”), arguing that both violate Measure E and that the EIR violates the California Environmental Quality Act (“CEQA”). Two similar actions seeking to enforce Measure E, captioned Northern California Recycling Association v. County of Solano and Sierra Club v. County of Solano, were filed in the same court on June 10, 2009, and August 10, 2009, respectively. The Northern California Recycling Association (“NCRA”) case does not name the Company or any of its subsidiaries as parties and does not contain any CEQA claims, but does seek to enforce Measure E and overturn the use permit for the expansion. The Sierra Club case names PHLF as a real party in interest, and seeks to overturn the use permit for the expansion of the landfill on Measure E grounds (but does not raise CEQA claims).

In December 2009, the Company and PHLF filed briefs vigorously opposing enforcement of Measure E on constitutional and other grounds. The Company’s position is supported by Solano County, a co-defendant in the Measure E litigation. It is also supported by the Attorney General of the State of California, the National Solid Wastes Management Association (“NSWMA”) and the California Refuse Recycling Council (“CRRC”), each of which filed supporting friend of court briefs or letters. In addition, numerous waste hauling companies in California, Oregon and Nevada intervened on the Company’s side in the state cases, subsequent to their participation in the federal action challenging Measure E discussed below.

On May 12, 2010, the Solano County Superior Court issued a written opinion addressing all three cases. The Court upheld Measure E in part by judicially rewriting the law, and then issued a writ of mandamus directing Solano County to enforce Measure E as rewritten. The Court decided that it could cure the law’s discrimination against out-of-county waste by revising Measure E to only limit the importation of waste into Solano County from other counties in California, but not from other states. In the same opinion, the Court rejected the requests from petitioners in the cases for a writ of administrative mandamus to overturn the use permit approved by Solano County in June 2009 for the expansion of PHLF’s landfill, thereby leaving the expansion permit in place.

In December 2010, the Court entered final judgments and writs of mandamus in the three cases, and Solano County, the Company, PHLF and the waste hauling company intervenors filed notices of appeal, which stayed the judgments and writs pending the outcome of the appeal. Petitioners Sierra Club and SPRAWLDEF cross-appealed the Court’s ruling denying their petitions for writs to overturn PHLF’s use permit for the expansion. Seventeen separate entities filed friend of court briefs on behalf of the Company and Solano County in September 2011, including the California Attorney General on behalf of the California Department of Resources Recycling and Recovery; the City and County of San Francisco; solid waste joint powers authorities serving the areas of Napa County, the City of Vallejo, the South Lake Tahoe Basin, Central Contra Costa County and the Salinas Valley; the California Association of Sanitation Agencies; sanitation districts serving Los Angeles County and Orange County; the NSWMA; the National Association of Manufacturers; the CRRC; the Los Angeles County Waste Management Association; the Solid Waste Association of Orange County; the Inland Empire Disposal Association; and the California Manufacturers and Technology Association. No friend of court briefs were filed on behalf of the petitioners. As explained below, on July 31, 2013, the Court of Appeal issued a ruling in this case in favor of the Company and Solano County.

As part of the final judgments, the Solano County Superior Court retained jurisdiction over any motions for attorneys’ fees under California’s Private Attorney General statute. Petitioners NCRA, SPRAWLDEF and Sierra Club each filed a bill of costs and a motion for attorney fees totaling $771. On May 31, 2011, the court issued a final order awarding petitioners $452 in attorneys’ fees, $411 of which relates to the SPRAWLDEF and Sierra Club cases in which the Company or PHLF is a named party. The court allocated 50% of the fee amount to PHLF, none of which the Company recorded as a liability at September 30, 2013. The Company and Solano County appealed this attorneys’ fees order in July 2011. As explained below, the Court of Appeal ruling on the merits of the case included a statement that the petitioners are no longer entitled to attorneys’ fees.

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(Unaudited)

(Dollar amounts in thousands, except share, per share, per gallon, tonnage and per ton amounts)

On February 9, 2012, the California Department of Resources Recycling and Recovery (“CalRecycle”) concurred in the solid waste facilities permit related to the Potrero Hills Landfill’s expansion, and the permit was approved and issued by the Solano County Department of Resource Management on February 14, 2012.

On September 25, 2012, Governor Jerry Brown signed into law Assembly Bill 845 (“AB 845”), an act of the California Legislature, effective January 1, 2013. AB 845 expressly prohibits counties from restricting or limiting the importation of solid waste into a privately owned facility in a county based on the waste’s place of origin. Because the Company believes that neither the Court of Appeal nor the trial court can grant petitioners any relief in light of AB 845, it filed a motion with the Court of Appeal on September 27, 2012. The motion sought to dismiss the cross appeals and reverse and remand the portions of the judgments rendered in petitioners’ favor regarding enforcement and implementation of Measure E by Solano County, including petitioners’ recovery of costs, for mootness in light of AB 845, with instructions to the trial court to dismiss the underlying writ petitions with prejudice. Sierra Club and SPRAWLDEF filed oppositions to the Company’s motion.

The Court of Appeal ruled on the Company’s motion on July 31, 2013. The Court ruled that AB 845 preempted Measure E and therefore precluded the writ of mandate enforcing Measure E as judicially rewritten. The Court reversed the judgment and writ of mandate, and directed the trial court to dismiss the petitions. The Court also dismissed on mootness grounds the cross-appeals by the petitioners of the trial court’s denial of their request for a writ of mandate vacating the use permit for the expansion. Regarding the trial court’s award of attorney fees to the petitioners, the Court of Appeal stated that petitioners were no longer successful parties under California law and “the award of attorney fees must necessarily be reversed.” Because the appeal of the attorney fees award is a separate case from the merits appeal, the Court’s ruling did not include an order regarding the fees award.

Sierra Club and SPRAWLDEF filed petitions for review with the California Supreme Court on September 9, 2013, asking the Supreme Court to hear an appeal of the Court of Appeal’s decision affirming the denial of a writ of mandamus to vacate the use permit for the expansion. The petitions did not seek review of the ruling that Measure E could no longer be enforced. A decision on the petitions for review is expected by the end of the year.

On August 19, 2013, before the petitions for review were filed, the Company filed a motion with the Court of Appeal in the attorney fees award appeal asking the Court to dismiss the Company’s appeal and summarily reverse the fees award, consistent with the Court of Appeal’s opinion in the merits case. The County filed a joinder in the motion on August 22, 2013. On September 10, 2013, the Court of Appeal issued an order deferring any ruling on the Company’s motion to summarily reverse the attorney fees award until the Supreme Court acts on the petitions for review.

At this point, the Company is not able to determine the likelihood of any outcome in this matter. If the Supreme Court of California grants the petitions for review, and if after full appellate briefing and argument the Supreme Court agrees with the petitioners that the Court of Appeal erred in finding moot the cross-appeals of the denial of the writ of mandate, the Supreme Court or Court of Appeal will then have to consider other bases on which to affirm the denial of the writ. These bases include the trial court ruling that the petitioners failed to raise their arguments regarding Measure E and the expansion permit when the permit was first considered in 2005, and therefore failed to exhaust administrative remedies. In the event that after further litigation the expansion permit is vacated and the County has to reconsider the permit, the County could reissue the expansion permit. The denial of an expansion permit would not preclude operation of Potrero Hills Landfill.

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(Unaudited)

(Dollar amounts in thousands, except share, per share, per gallon, tonnage and per ton amounts)

SPRAWLDEF additionally filed a lawsuit seeking a writ of mandate in Sacramento County Superior Court on August 20, 2009, captioned SPRAWLDEF v. California Integrated Waste Management Board (“CIWMB”), County of Solano, et al., challenging a CIWMB decision to dismiss SPRAWLDEF’s administrative appeal to the CIWMB seeking to set aside a 2006 solid waste facilities permit issued to Potrero Hills Landfill by the Solano County Local Enforcement Agency. The case names the Company and PHLF as real parties in interest. The appeal was dismissed by the CIWMB for failure to raise a substantial issue. The case was tried in Sacramento County Superior Court in October 2010, and the Superior Court rejected all of SPRAWLDEF’s claims and ordered the writ petition dismissed. SPRAWLDEF appealed the dismissal to the Third District Court of Appeal. The case has been fully briefed. The Company believes the case may be moot in light of the February 14, 2012 issuance of the new solid waste facilities permit for the landfill, which supersedes the 2006 permit at issue in the appeal. While the Company believes that the respondent agencies will prevail in this case, in the unlikely event that the 2006 permit was set aside, PHLF would continue to operate the Potrero Hills Landfill under the site’s new 2012 solid waste facilities permit.

On December 17, 2010, SPRAWLDEF and one its members filed a petition for writ of mandate in San Francisco Superior Court seeking to overturn the October 2010 approval of the marsh development permit issued by the San Francisco Bay Conservation and Development Commission (“BCDC”) for PHLF’s landfill expansion, alleging that the approval is contrary to the Suisun Marsh Protection Act. The petition, captioned SPRAWLDEF v. San Francisco Bay Conservation and Development Commission, names BCDC as a respondent and the Company as the real party in interest. The San Francisco Superior Court stayed the action and, on April 5, 2012, transferred the case to Solano County Superior Court, citing that court’s experience in the related CEQA case and judicial economy. On June 5, 2012, Solano County Superior Court assigned the case to Judge Beeman. On November 29, 2012, the court issued an order finding that the administrative record before BCDC did not contain sufficient evidence regarding net profits for the proposed project or the alternative to support the agency’s finding that the alternative was economically infeasible. The court therefore issued a writ of mandamus and final judgment on January 14, 2013 setting aside the BCDC permit and remanding it back to the agency for further consideration. Both the Company and BCDC filed notices of appeal, staying execution of the writ and judgment pending the appeal. Briefing for the appeal has been completed. The County of Solano, Suisun Resource Conservation District, California Refuse Recycling Council and Napa-Vallejo Waste Management Authority each filed amici briefs in this case on behalf of Appellants BCDC and the Company. At this point the Company is not able to determine the likelihood of any outcome in this matter.

On June 10, 2011, June Guidotti, a property owner adjacent to PHLF, and SPRAWLDEF and one of its members, each filed administrative petitions for review with the State Water Resources Control Board (“State Board”) seeking to overturn a May 11, 2011 Order No. 2166-(a) approving waste discharge requirements issued by the San Francisco Bay Regional Water Quality Control Board (“Regional Board”) for PHLF’s landfill expansion, alleging that the order is contrary to the State Board’s Title 27 regulations authorizing waste discharge requirements for landfills, and in the case of the SPRAWLDEF petition, further alleging that the Regional Board’s issuance of a Clean Water Act section 401 certification is not supported by an adequate alternatives analysis as required by the federal Clean Water Act. The Regional Board is preparing the administrative record of its decision to issue Order 2166-(a) to be filed with the State Board as well as its response to the petitions for review. It is anticipated that the Regional Board will vigorously defend its actions and seek dismissal of the petitions for review. A hearing date has not yet been set on either petition, and the State Board has held both the Guidotti and SPRAWLDEF petitions in abeyance at the petitioners’ requests. At this point the Company is not able to determine the likelihood of any outcome in this matter.

If as a result of any of the matters described above, after exhausting all appeals, PHLF’s use permit for the expansion or marsh development permit is permanently rescinded, the Company estimates that it would be required to recognize a pre-tax impairment charge of approximately $33,000 to reduce the carrying value of PHLF to its estimated fair value.

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WASTE CONNECTIONS, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

(Dollar amounts in thousands, except share, per share, per gallon, tonnage and per ton amounts)

Colonie, New York Landfill Privatization Litigation

In August 2011, one of the Company’s wholly-owned subsidiaries, Capital Region Landfills, Inc. (“CRL”) and the Town of Colonie, New York (“Colonie”), entered into a Solid Waste Facility Operating Agreement (“Agreement”). CRL was selected to operate Colonie’s solid waste management operations, which include the Colonie Landfill, pursuant to a request for proposals initiated under New York State General Municipal Law (“GML”) section 120-w. CRL commenced solid waste management operations under the Agreement on September 19, 2011.

On September 29, 2011, seven individuals filed a petition in New York State Supreme Court (Albany County) against Colonie, its Town Board and its Supervisor (“Town Respondents”) to challenge the Agreement. The case is captioned, Conners, et al. v. Town of Colonie, et al., Index No. 006312/2011 (Sup. Ct., Albany Co.). On October 17, 2011, the petition was amended to add CRL and the Company as respondents. The petition alleged that the Agreement is the functional equivalent of a lease and therefore should have been subject to the permissive referendum requirements of New York State Town Law sections 64(2) and 90. The Town Respondents, CRL and the Company filed motions to dismiss on various procedural and substantive grounds.

On April 5, 2012, the Supreme Court dismissed the petition. On May 3, 2012, petitioners filed a notice of appeal with the Appellate Division of the New York State Supreme Court, Third Department. On July 3, 2013, the Appellate Division of the New York State Supreme Court, Third Department, affirmed the Supreme Court’s dismissal of the petition. The petitioners have not appealed the Third Department’s decision and the time period for doing so has elapsed. Thus, no further appeal may be pursued at this time.

Madera County, California Materials Recovery Facility Contract Litigation

The Company’s subsidiary, Madera Disposal Systems, Inc. (“MDSI”) was named in a complaint captioned County of Madera vs. Madera Disposal Systems, Inc., et al, which was filed in Madera County Superior Court (Case No. MCV 059402) on March 5, 2012, and subsequently transferred to Fresno County Superior Court. In its complaint, Madera County alleges that from 2007 through 2010, MDSI breached a contract with the County for the operation of a materials recovery facility by withholding profits from facility operations in excess of those authorized by the contract. The County further alleges that the breach gives the County the unilateral right to terminate all of its contracts with MDSI, including contracts for (1) the collection of residential and commercial waste in the unincorporated parts of the County, (2) operation of the materials recovery facility, (3) operation of the North Fork Transfer Station and (4) operation of the Fairmead Landfill. The County seeks monetary damages of $2,962 from MDSI, plus pre-judgment interest at 10% per annum.

MDSI had been under contract with the County to collect residential and commercial waste and operate the county-owned Fairmead Landfill continuously since at least 1981. In 1994, MDSI contracted with the County to construct and operate a materials recovery facility for the County on the premises of the Fairmead Landfill. At the time it entered into the materials recovery facility contract, MDSI entered into new contracts with the County for waste collection and landfill operation that were to run concurrently with the materials recovery facility contract. In 1998, MDSI and the County agreed to extend the terms of the materials recovery facility and other County contracts until November 10, 2012, with MDSI holding a unilateral option to extend all of the contracts for an additional five-year term.

In March 2011, the County issued a Notice of Default to MDSI under the materials recovery facility contract and gave MDSI 30 days to cure the default. MDSI provided information that it believed demonstrated that it was not in default under the contract and had not withheld profits that it was obligated to deliver to the County under the terms of the contract.

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WASTE CONNECTIONS, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

(Dollar amounts in thousands, except share, per share, per gallon, tonnage and per ton amounts)

On February 7, 2012, the County issued a Notice of Termination to MDSI terminating all of its contracts effective November 1, 2012. The lawsuit followed on March 5, 2012. MDSI answered the complaint and asserted a claim against the County for wrongful termination of the contracts. On October 31, 2012, MDSI ceased providing services and vacated the County premises. The case is set for trial in Fresno in June 2014.

At this point, the Company is not able to determine the likelihood of any outcome in this matter. The Company disputes Madera County’s right to terminate the MDSI contracts effective November 1, 2012, and seeks damages for the profits lost as a result of the wrongful termination. The Company estimates that the current annual impact to its pre-tax earnings resulting from the termination of MDSI’s contracts with Madera County will be approximately $2,300 per year, not including any monetary damages and interest the Court could order MDSI to pay the County.

18. SUBSEQUENT EVENT

On October 22, 2013, the Company announced that its Board of Directors increased its regular quarterly cash dividend by $0.015, from $0.10 to $0.115 per share, and then declared a regular quarterly cash dividend of $0.115 per share on the Company’s common stock. The dividend will be paid on November 19, 2013, to stockholders of record on the close of business on November 5, 2013.

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

FORWARD-LOOKING STATEMENTS

Certain statements contained in this Quarterly Report on Form 10-Q are forward-looking in nature, including statements related to our ability to provide adequate cash to fund our operating activities, our ability to draw on our credit facility or raise additional capital, the impact of global economic conditions on our volume, business and results of operations, the effects of landfill special waste projects on volume results, the effects of seasonality on our business and results of operations, demand for recyclable commodities and recyclable commodity pricing, our expectations with respect to capital expenditures, our expectations with respect to our ability to obtain expansions of permitted landfill capacity, our expectations with respect to our stock repurchase program and future dividend payments, our expectations with respect to the outcomes of our legal proceedings and our expectations with respect to the purchase of fuel and fuel prices. These statements can be identified by the use of forward-looking terminology such as “believes,” “expects,” “may,” “will,” “should,” or “anticipates,” or the negative thereof or comparable terminology, or by discussions of strategy.

Our business and operations are subject to a variety of risks and uncertainties and, consequently, actual results may differ materially from those projected by any forward-looking statements. Factors that could cause actual results to differ from those projected include, but are not limited to, the following:

• Our acquisitions may not be successful, which may reduce the anticipated benefit from acquired businesses;

• A portion of our growth and future financial performance depends on our ability to integrate acquired businesses into our organization and operations;

• Our indebtedness could adversely affect our financial condition and limit our financial flexibility;

• Competition for acquisition candidates, consolidation within the waste industry and economic and market conditions may limit our ability to grow through acquisitions;

• Our industry is highly competitive and includes larger and better capitalized companies, companies with lower prices, return expectations or other advantages, and governmental service providers, which could adversely affect our ability to compete and our operating results;

• We may lose contracts through competitive bidding, early termination or governmental action;

• Price increases may not be adequate to offset the impact of increased costs or may cause us to lose volume;

• Economic downturns adversely affect operating results;

• Our results are vulnerable to economic conditions and seasonal factors affecting the regions in which we operate;

• The E&P waste disposal business depends on oil and gas prices and the level of drilling and production activity in the basins in which we operate;

• We have limited experience in running an E&P waste treatment, recovery and disposal business;

• Our E&P waste business is dependent upon the willingness of our customers to outsource their waste management activities;

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• Changes in laws or government regulations regarding hydraulic fracturing could increase our customers’ costs of doing business and reduce oil and gas production by our customers, which could adversely impact our business;

• Our E&P waste business could be adversely affected by changes in laws regulating E&P waste;

• We may be subject in the normal course of business to judicial, administrative or other third party proceedings that could interrupt or limit our operations, require expensive remediation, result in adverse judgments, settlements or fines and create negative publicity;

• Increases in the price of diesel fuel may adversely affect our collection business and reduce our operating margins;

• Increases in labor and disposal and related transportation costs could impact our financial results;

• Efforts by labor unions could divert management attention and adversely affect operating results;

• We could face significant withdrawal liability if we withdraw from participation in one or more multiemployer pension plans in which we participate and the accrued pension benefits are not fully funded;

• Increases in insurance costs and the amount that we self-insure for various risks could reduce our operating margins and reported earnings;

• Each business that we acquire or have acquired may have liabilities or risks that we fail or are unable to discover, including environmental liabilities;

• Liabilities for environmental damage may adversely affect our financial condition, business and earnings;

• Our accruals for our landfill site closure and post-closure costs may be inadequate;

• The financial soundness of our customers could affect our business and operating results;

• We depend significantly on the services of the members of our senior, regional and district management team, and the departure of any of those persons could cause our operating results to suffer;

• Our decentralized decision-making structure could allow local managers to make decisions that adversely affect our operating results;

• We may incur charges related to capitalized expenditures of landfill development projects, which would decrease our earnings;

• Because we depend on railroads for our intermodal operations, our operating results and financial condition are likely to be adversely affected by any reduction or deterioration in rail service;

• Our financial results could be adversely affected by impairments of goodwill or indefinite-lived intangibles;

• Our financial results are based upon estimates and assumptions that may differ from actual results;

Page 33

• The adoption of new accounting standards or interpretations could adversely affect our financial results;

• Pending or future litigation or governmental proceedings could result in material adverse consequences, including judgments or settlements;

• If we are not able to develop and protect intellectual property, or if a competitor develops or obtains exclusive rights to a breakthrough technology, our financial results may suffer;

• Fluctuations in prices for recycled commodities that we sell and rebates we offer to customers may cause our revenues and operating results to decline;

• Our financial and operating performance may be affected by the inability to renew landfill operating permits, obtain new landfills and expand existing ones;

• Future changes in laws or renewed enforcement of laws regulating the flow of solid waste in interstate commerce could adversely affect our operating results;

• Our E&P waste business in New Mexico could be adversely impacted if the New Mexico “Pit Rule” is rescinded or relaxed;

• Extensive and evolving environmental, health, safety and employment laws and regulations may restrict our operations and growth and increase our costs;

• Climate change regulations may adversely affect operating results;

• Extensive regulations that govern the design, operation and closure of landfills may restrict our landfill operations or increase our costs of operating landfills;

• Alternatives to landfill disposal may cause our revenues and operating results to decline; and

• Unusually adverse weather conditions may interfere with our operations, harming our operating results.

These risks and uncertainties, as well as others, are discussed in greater detail in this Quarterly Report on Form 10-Q and our other filings with the Securities and Exchange Commission, or SEC, including our most recent Annual Report on Form 10-K. There may be additional risks of which we are not presently aware or that we currently believe are immaterial which could have an adverse impact on our business. We make no commitment to revise or update any forward-looking statements in order to reflect events or circumstances that may change.

OVERVIEW

We are an integrated municipal solid waste services company that provides solid waste collection, transfer, disposal and recycling services primarily in exclusive and secondary markets in the U.S. and a leading provider of non-hazardous exploration and production, or E&P, waste treatment, recovery and disposal services in several of the most active natural resource producing areas of the U.S. We also provide intermodal services for the rail haul movement of cargo and solid waste containers in the Pacific Northwest through a network of intermodal facilities.

We seek to avoid highly competitive, large urban markets and instead target markets where we can attain high market share either through exclusive contracts, vertical integration or asset positioning. In markets where waste collection services are provided under exclusive arrangements, or where waste disposal is municipally funded or available at multiple municipal sources, we believe that controlling the waste stream by providing collection services under exclusive arrangements is often more important to our growth and profitability than owning or operating landfills. We also target niche markets, like E&P waste treatment and disposal services, with similar characteristics and, we believe, higher comparative growth potential.

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As of September 30, 2013, we served residential, commercial, industrial and E&P customers from a network of operations in 31 states: Alabama, Alaska, Arizona, California, Colorado, Idaho, Illinois, Iowa, Kansas, Kentucky, Louisiana, Massachusetts, Michigan, Minnesota, Mississippi, Montana, Nebraska, Nevada, New Mexico, New York, North Carolina, North Dakota, Oklahoma, Oregon, South Carolina, South Dakota, Tennessee, Texas, Utah, Washington and Wyoming. As of September 30, 2013, we owned or operated a network of 149 solid waste collection operations; 68 transfer stations; seven intermodal facilities, 37 recycling operations, 54 active MSW, E&P and/or non-MSW landfills, 20 E&P liquid waste injection wells, 15 E&P waste treatment and recovery facilities and 19 oil recovery facilities.

The municipal solid waste industry is a local and highly competitive business, requiring substantial labor and capital resources. The participants compete for collection accounts primarily on the basis of price and, to a lesser extent, the quality of service, and compete for landfill business on the basis of tipping fees, geographic location and quality of operations. The municipal solid waste industry has been consolidating and continues to consolidate as a result of a number of factors, including the increasing costs and complexity associated with waste management operations and regulatory compliance. Many small independent operators and municipalities lack the capital resources, management, operating skills and technical expertise necessary to operate effectively in such an environment. The consolidation trend has caused municipal solid waste companies to operate larger landfills that have complementary collection routes that can use company-owned disposal capacity. Controlling the point of transfer from haulers to landfills has become increasingly important as landfills continue to close and disposal capacity moves further from collection markets.

Generally, the most profitable operators within the municipal solid waste industry are those companies that are vertically integrated or enter into long-term collection contracts. A vertically integrated operator will benefit from: (1) the internalization of waste, which is bringing waste to a company-owned landfill; (2) the ability to charge third-party haulers tipping fees either at landfills or at transfer stations; and (3) the efficiencies gained by being able to aggregate and process waste at a transfer station prior to landfilling.

The E&P waste services industry is similarly regional in nature and is also highly fragmented, with acquisition opportunities available in several active basins. Competition for E&P waste comes primarily from smaller regional companies that utilize a variety of disposal methods and generally serve specific geographic markets. In addition, customers in many markets have the option of using internal disposal methods or outsourcing to another third party disposal company. The principal competitive factors in this business include: gaining customer approval of treatment and disposal facilities; location of facilities in relation to customer activity; reputation; reliability of services; track record of environmental compliance; ability to accept multiple waste types at a single facility; and price.

CRITICAL ACCOUNTING ESTIMATES AND ASSUMPTIONS

The preparation of financial statements in conformity with GAAP requires estimates and assumptions that affect the reported amounts of assets and liabilities, revenues and expenses and related disclosures of contingent assets and liabilities in the condensed consolidated financial statements. As described by the SEC, critical accounting estimates and assumptions are those that may be material due to the levels of subjectivity and judgment necessary to account for highly uncertain matters or the susceptibility of such matters to change, and that have a material impact on the financial condition or operating performance of a company. Such critical accounting estimates and assumptions are applicable to our reportable segments. Refer to our most recent Annual Report on Form 10-K for a complete description of our critical accounting estimates and assumptions.

NEW ACCOUNTING PRONOUNCEMENTS

For a description of the new accounting standards that affect us, see Note 2 to our Condensed Consolidated Financial Statements included in Part I, Item 1 of this Quarterly Report on Form 10-Q.

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RESULTS OF OPERATIONS FOR THE THREE AND NINE MONTHS ENDED SEPTEMBER 30, 2013 AND 2012

The following table sets forth items in our condensed consolidated statements of net income in thousands and as a percentage of revenues for the periods indicated.

	Three months ended September 30,										Nine months ended September 30,
	2013					2012					2013					2012
Revenues	$	503,646		100.0	%	$	425,654		100.0	%	$	1,442,918		100.0	%	$	1,212,815		100.0	%
Cost of operations		274,141		54.4			243,243		57.1			794,588		55.1			698,351		57.6
Selling, general and administrative		53,536		10.6			47,977		11.3			159,690		11.1			143,899		11.8
Depreciation		55,863		11.1			42,313		9.9			162,277		11.2			119,331		9.8
Amortization of intangibles		6,211		1.2			6,267		1.5			18,861		1.3			18,115		1.5
Loss (gain) on disposal of assets		(1,129	)	(0.2	)		244		0.1			1,993		0.1			715		0.1
Loss (gain) on prior office leases		(596	)	(0.1	)		—		—			9,902		0.7			—		—
Gain from litigation settlement		—		—			(3,537	)	(0.8	)		—		—			(3,537	)	(0.3	)
Operating income		115,620		23.0			89,147		20.9			295,607		20.5			235,941		19.5
Interest expense		(17,911	)	(3.6	)		(11,949	)	(2.8	)		(55,851	)	(3.9	)		(36,063	)	(3.0	)
Other income (expense), net		845		0.2			825		0.2			(119	)	—			1,663		0.1
Income tax provision		(37,641	)	(7.5	)		(28,403	)	(6.6	)		(93,049	)	(6.5	)		(77,967	)	(6.4	)
Net income attributable to noncontrolling interests		(207	)	—			(235	)	(0.1	)		(359	)	—			(470	)	—
Net income attributable to Waste Connections	$	60,706		12.1	%	$	49,385		11.6	%	$	146,229		10.1	%	$	123,104		10.2	%

Revenues. Total revenues increased $77.9 million, or 18.3%, to $503.6 million for the three months ended September 30, 2013, from $425.7 million for the three months ended September 30, 2012.

Revenues during the three months ended September 30, 2013 from the acquisition of the business of R360 Environmental Solutions, Inc., or R360, were $61.0 million. All other acquisitions closed during, or subsequent to, the three months ended September 30, 2012, increased revenues by approximately $1.3 million. Operations divested during, or subsequent to, the three months ended September 30, 2012, decreased revenues by approximately $1.5 million.

During the three months ended September 30, 2013, the net increase in prices charged to our customers was $11.4 million, consisting of $10.2 million of core price increases and $1.2 million of fuel, materials and environmental surcharges.

During the three months ended September 30, 2013, volume increases in our existing business increased revenues by $8.1 million. The increase in volume was primarily attributable to increases in landfill municipal solid waste volumes, landfill special waste projects and roll off hauling resulting from increased construction and general economic activity in our markets, partially offset by declines in E&P waste volumes at our existing locations.

During the three months ended September 30, 2013, decreased recyclable commodity volumes in our Eastern segment and the closure of a recycling operation in our Western segment, partially offset by increased recyclable commodity prices, decreased revenues by $0.2 million.

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Other revenues decreased by $2.2 million during the three months ended September 30, 2013, primarily due to a decrease in cargo volume at our intermodal operations.

Total revenues increased $230.1 million, or 19.0%, to $1.443 billion for the nine months ended September 30, 2013, from $1.213 billion for the nine months ended September 30, 2012.

Revenues during the nine months ended September 30, 2013 from the R360 acquisition were $170.0 million. All other acquisitions closed during, or subsequent to, the nine months ended September 30, 2012, increased revenues by approximately $32.7 million. Operations divested during, or subsequent to, the nine months ended September 30, 2012, decreased revenues by approximately $2.3 million.

During the nine months ended September 30, 2013, the net increase in prices charged to our customers was $35.1 million, consisting of $31.5 million of core price increases and $3.6 million of fuel, materials and environmental surcharges.

During the nine months ended September 30, 2013, volume increases in our existing business increased revenues by $3.8 million. The increase in volume was primarily attributable to increases in landfill municipal solid waste volumes, landfill special waste projects and roll off hauling resulting from increased construction and general economic activity in our markets, partially offset by declines in commercial hauling primarily attributable to service level declines with existing customers and a reduction in customer counts due to competition in our markets.

During the nine months ended September 30, 2013, decreased recyclable commodity volumes in our Eastern segment, the closure of a recycling operation in our Western segment and decreased recyclable commodity prices, primarily due to decreased overseas demand for recyclable commodities, decreased revenues by $5.9 million.

Other revenues decreased by $3.3 million during the nine months ended September 30, 2013, primarily due to a decrease in cargo volume at our intermodal operations.

Cost of Operations. Total cost of operations increased $30.9 million, or 12.7%, to $274.1 million for the three months ended September 30, 2013, from $243.2 million for the three months ended September 30, 2012. The increase was primarily the result of $24.4 million of additional operating costs during the three months ended September 30, 2013 from the R360 acquisition and the following changes at operations owned in comparable periods in 2012 and 2013: an increase in third party disposal expense of $3.1 million due to increased disposal rates, increased collection volumes and changes in the disposal internalization of collected volumes in certain markets, an increase in labor expenses of $2.7 million due primarily to employee pay rate increases, an increase in third party trucking and transportation expenses of $1.7 million due to increased landfill volumes that require us to transport the waste to our disposal sites, an increase in diesel fuel expenses of $1.5 million resulting from the net impact of higher market prices for fuel and the expiration of a prior year fuel hedge in which the diesel fuel fixed price under the hedge agreement was less than the diesel fuel retail price and $1.1 million of other net increases, partially offset by a $0.8 million decrease in auto and workers’ compensation expense under our high deductible insurance program due to a reduction in projected losses on open claims, a decrease in rail transportation expenses at our intermodal operations of $1.1 million due to decreased rail cargo volume, a decrease in the cost of recyclable commodities of $0.9 million due to declines in commodity values and a decrease in operating costs of $0.8 million resulting from operations divested during, or subsequent to, the three months ended September 30, 2012.

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Total cost of operations increased $96.2 million, or 13.8%, to $794.6 million for the nine months ended September 30, 2013, from $698.4 million for the nine months ended September 30, 2012. The increase was primarily the result of $70.8 million of additional operating costs during the nine months ended September 30, 2013 from the R360 acquisition, $16.4 million of additional operating costs from all other acquisitions closed during, or subsequent to, the nine months ended September 30, 2012, and the following changes at operations owned in comparable periods in 2012 and 2013: an increase in labor expenses of $3.3 million due primarily to employee pay rate increases, an increase in third party trucking and transportation expenses of $2.6 million due to increased landfill volumes that require us to transport the waste to our disposal sites, an increase in diesel fuel expenses of $2.1 million resulting from the net impact of the expiration of a prior year fuel hedge in which the diesel fuel fixed price under the hedge agreement was less than the diesel fuel retail price and an increase in total diesel fuel gallons consumed, less lower market prices for diesel fuel not purchased under diesel fuel hedge agreements, an increase in taxes on revenues of $1.6 million due primarily to higher landfill revenues, an increase in third party disposal expense of $0.9 million due to increased disposal rates and changes in the disposal internalization of collected volumes in certain markets, an increase in truck, container and equipment maintenance and repair expenses of $0.7 million due to variability in the timing and severity of major equipment repairs, an increase in insurance premiums under our high deductible insurance program of $0.7 million due to our growth from acquisitions, an increase in facility repair and maintenance expenses of $0.7 million, an increase in cell processing reserves at certain E&P locations of $0.5 million and $2.3 million of other net increases, partially offset by a $2.5 million decrease in insurance claims expense under our high deductible insurance program due to a reduction in projected losses on open auto and workers’ compensation claims, a decrease in the cost of recyclable commodities of $1.7 million due to declines in commodity values, a decrease in rail transportation expenses at our intermodal operations of $1.6 million due to decreased rail cargo volume and a decrease in operating costs of $0.6 million resulting from operations divested during, or subsequent to, the nine months ended September 30, 2012.

Cost of operations as a percentage of revenues decreased 2.7 percentage points to 54.4% for the three months ended September 30, 2013, from 57.1% for the three months ended September 30, 2012. The decrease as a percentage of revenues was comprised of a 2.1 percentage point decrease from acquisitions closed during, or subsequent to, the three months ended September 30, 2012, having lower cost of operations as a percentage of revenue than our historical company average, a 0.3 percentage point decrease from lower rail transportation expenses, a 0.3 percentage point decrease from the decrease in the cost of recyclable commodities, a 0.2 percentage point decrease from lower auto and workers’ compensation expenses and a 0.1 percentage point decrease from a decrease in labor expenses as a percentage of revenues, partially offset by a 0.3 percentage point increase from increased disposal expenses.

Cost of operations as a percentage of revenues decreased 2.5 percentage points to 55.1% for the nine months ended September 30, 2013, from 57.6% for the nine months ended September 30, 2012. The decrease as a percentage of revenues was comprised of a 1.9 percentage point decrease from acquisitions closed during, or subsequent to, the nine months ended September 30, 2012, having lower cost of operations as a percentage of revenue than our historical company average, a 0.3 percentage point decrease from lower auto and workers’ compensation expense, a 0.2 percentage point decrease from a decrease in the cost of recyclable commodities and a 0.1 percentage point decrease from a decrease in labor expenses as a percentage of revenues resulting from increased labor productivity.

SG&A. SG&A expenses increased $5.5 million, or 11.6%, to $53.5 million for the three months ended September 30, 2013, from $48.0 million for the three months ended September 30, 2012. The increase was primarily the result of $4.9 million of additional SG&A expenses during the three months ended September 30, 2013 from the R360 acquisition and the following changes at operations owned in comparable periods in 2012 and 2013: an increase in payroll and payroll-related expenses of $0.9 million primarily related to annual compensation increases, an increase in recurring equity-based compensation expense associated with our annual grant of restricted stock awards to our personnel of $0.6 million due to an increase in the number of personnel receiving restricted stock awards, an increase in cash incentive compensation expense of $0.3 million resulting from the achievement of certain financial targets and $1.1 million of other net increases, partially offset by a decrease in direct acquisition expenses of $1.3 million due to a reduction in acquisition activity and a decrease of $1.0 million associated with relocation expenses, the majority of which were incurred during the prior year relocation of our corporate headquarters from Folsom, California to The Woodlands, Texas.

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SG&A expenses increased $15.8 million, or 11.0%, to $159.7 million for the nine months ended September 30, 2013, from $143.9 million for the nine months ended September 30, 2012. The increase was primarily the result of $14.9 million of additional SG&A expenses during the nine months ended September 30, 2013 from the R360 acquisition, $2.6 million of additional SG&A expenses from all other acquisitions closed during, or subsequent to, the nine months ended September 30, 2012, and the following changes at operations owned in comparable periods in 2012 and 2013: an increase in cash incentive compensation expense of $3.7 million resulting from the achievement of certain financial targets, an increase in payroll and payroll-related expenses of $2.2 million primarily related to annual compensation increases, an increase in recurring equity-based compensation expense associated with our annual grant of restricted stock awards to our personnel of $1.4 million due to an increase in the number of personnel receiving restricted stock awards, an increase in professional fees of $1.1 million due primarily to increased expenses for external accounting, tax and information technology services and $1.2 million of other net increases, partially offset by a decrease of $5.1 million associated with relocation expenses, the majority of which were incurred during the prior year relocation of our corporate headquarters from Folsom, California to The Woodlands, Texas, a decrease in equity-based compensation resulting from a non-recurring grant in 2012 of $3.6 million of immediately vested restricted stock units to certain executive officers at the time the executives agreed to modifications to their employment contracts and a decrease in direct acquisition expenses of $2.6 million due to a reduction in acquisition activity.

SG&A expenses as a percentage of revenues decreased 0.7 percentage points to 10.6% for the three months ended September 30, 2013, from 11.3% for the three months ended September 30, 2012. The decrease as a percentage of revenues was comprised of a 0.3 percentage point decrease due to a decrease in direct acquisition expenses, a 0.3 percentage point decrease due to acquisitions closed during, or subsequent to, the three months ended September 30, 2012, having lower SG&A expenses as a percentage of revenue than our historical company average and a 0.2 percentage point decrease in relocation expenses, partially offset by a 0.1 percentage point increase from increased recurring equity-based compensation.

SG&A expenses as a percentage of revenues decreased 0.7 percentage points to 11.1% for the nine months ended September 30, 2013, from 11.8% for the nine months ended September 30, 2012. The decrease as a percentage of revenues was comprised of a 0.5 percentage point decrease from lower relocation expenses, a 0.3 percentage point decrease due to acquisitions closed during, or subsequent to, the nine months ended September 30, 2012, having lower SG&A expenses as a percentage of revenue than our historical company average, a 0.2 percentage point decrease from lower total equity-based compensation expense and a 0.2 percentage point decrease due to a decrease in direct acquisition expenses, partially offset by a 0.3 percentage point increase from increased cash incentive compensation expense, a 0.1 percentage point increase from increased payroll and payroll-related expenses and a 0.1 percentage point increase from the increase in professional fee expenses.

Depreciation. Depreciation expense increased $13.6 million, or 32.0%, to $55.9 million for the three months ended September 30, 2013, from $42.3 million for the three months ended September 30, 2012. The increase was primarily attributable to $4.5 million of depreciation and $5.3 million of depletion during the three months ended September 30, 2013 from the R360 acquisition, an increase in depreciation expense of $2.0 million associated with additions to our fleet and equipment purchased to support our existing operations and an increase in depletion expense of $1.8 million due primarily to an increase in volumes at our existing landfill operations.

Depreciation expense increased $43.0 million, or 36.0%, to $162.3 million for the nine months ended September 30, 2013, from $119.3 million for the nine months ended September 30, 2012. The increase was primarily attributable to $12.8 million of depreciation and $17.1 million of depletion during the nine months ended September 30, 2013 from the R360 acquisition, $2.2 million of depreciation and $2.6 million of depletion from all other acquisitions closed during, or subsequent to, the nine months ended September 30, 2012, an increase in depletion expense of $5.2 million due primarily to both an increase in volumes at our existing landfill operations and adjustments to landfill closure liabilities and an increase in depreciation expense of $3.1 million associated with additions to our fleet and equipment purchased to support our existing operations.

Depreciation expense as a percentage of revenues increased 1.2 percentage points to 11.1% for the three months ended September 30, 2013, from 9.9% for the three months ended September 30, 2012. The increase as a percentage of revenues was comprised of a 0.7 percentage point increase from an increase in depletion and depreciation expense from the R360 acquisition due primarily to the R360 landfills having a higher depletion rate per ton relative to our historical company average, a 0.3 percentage point increase from an increase in depletion expense at our existing operations due to increased landfill volumes and a 0.2 percentage point increase from an increase in depreciation expense at our existing operations due to additions to our fleet and equipment.

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Depreciation expense as a percentage of revenues increased 1.4 percentage points to 11.2% for the nine months ended September 30, 2013, from 9.8% for the nine months ended September 30, 2012. The increase as a percentage of revenues was comprised of a 0.9 percentage point increase from an increase in depletion expense at landfills acquired during, or subsequent to, the nine months ended September 30, 2012, which have a higher depletion rate per ton relative to our historical company average, a 0.4 percentage point increase in depletion expense at our existing operations due to increased landfill volumes and the aforementioned adjustments to landfill closure obligations and a 0.1 percentage point increase in depreciation expense at our existing operations due to additions to our fleet and equipment.

Amortization of Intangibles. Amortization of intangibles expense decreased $0.1 million, or 0.9%, to $6.2 million for the three months ended September 30, 2013, from $6.3 million for the three months ended September 30, 2012. The decrease was primarily attributable to $0.5 million of additional amortization expense for permits and customer lists from the R360 acquisition being offset by a $0.6 million decrease in amortization expense resulting from certain intangible assets becoming fully amortized subsequent to the three months ended September 30, 2012.

Amortization of intangibles expense increased $0.8 million, or 4.1%, to $18.9 million for the nine months ended September 30, 2013, from $18.1 million for the nine months ended September 30, 2012. The increase was primarily attributable to $1.6 million of additional amortization expense during the nine months ended September 30, 2013 for permits and customer lists from the R360 acquisition and $0.7 million of additional amortization expense for contracts and customer lists from all other acquisitions closed during, or subsequent to, the nine months ended September 30, 2012, partially offset by a decrease in amortization expense of $1.5 million resulting from certain intangible assets becoming fully amortized subsequent to the nine months ended September 30, 2012.

Amortization expense as a percentage of revenues decreased 0.3 and 0.2 percentage points to 1.2% and 1.3% for the three and nine months ended September 30, 2013, respectively, from 1.5% for the three and nine months ended September 30, 2012. The decreases as a percentage of revenues were attributable to the reduction in amortization expense resulting from certain intangible assets becoming fully amortized subsequent to September 30, 2012.

Loss (Gain) on Disposal of Assets. Loss (gain) on disposal of assets decreased $1.3 million, to a gain of $1.1 million for the three months ended September 30, 2013, from a loss of $0.2 million for the three months ended September 30, 2012. The decrease was attributable to a $1.4 million gain on the disposal of an operating location in 2013, partially offset by $0.1 million of net losses resulting from the book carrying values of assets sold exceeding the sales proceeds.

Loss (gain) on disposal of assets increased $1.3 million, to a loss of $2.0 million for the nine months ended September 30, 2013, from a loss of $0.7 million for the nine months ended September 30, 2012. The increase was attributable to a $1.8 million net loss on the disposal of two operating locations in 2013 compared to a $0.8 million loss on the disposal of an operating location in 2012 and a $0.8 million write down in the carrying value of assets at an operating location scheduled to be closed in 2013, partially offset by $0.5 million of net gains resulting from the sales proceeds of assets sold exceeding their book carrying values. On an aggregate basis, assets disposed in the nine months ended September 30, 2013 had a lower book carrying value relative to sales proceeds compared to assets disposed in the nine months ended September 30, 2012.

Gain from Litigation Settlement. Gain from litigation settlement of $3.5 million for the three and nine months ended September 30, 2012 consisted of an award received from an arbitration we filed against a counter-party for breach of a disposal agreement.

Loss (Gain) on Prior Office Leases. During the three and nine months ended September 30, 2013, we recorded a $0.8 million expense charge associated with the cessation of use of our E&P segment’s former regional offices in Houston, Texas. During the six months ended June 30, 2013, we estimated and recorded a $10.5 million expense charge associated with the cessation of use of our former corporate headquarters in Folsom, California, which was reduced by $1.4 million during the three months ended September 30, 2013 as a result of our entering into a binding agreement to remit a payment to terminate our remaining lease obligation.

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Operating Income. Operating income increased $26.5 million, or 29.7%, to $115.6 million for the three months ended September 30, 2013, from $89.1 million for the three months ended September 30, 2012. The increase was primarily attributable to the $77.9 million increase in revenues, $1.3 million decrease in loss on disposal of assets and a $0.6 million adjustment to reduce the loss on our prior offices leases, partially offset by a $30.9 million increase in operating costs, $13.6 million increase in depreciation expense, $5.5 million increase in SG&A expense and the non-recurring $3.5 million gain from litigation settlement received in 2012.

Operating income increased $59.7 million, or 25.3%, to $295.6 million for the nine months ended September 30, 2013, from $235.9 million for the nine months ended September 30, 2012. The increase was primarily attributable to the $230.1 million increase in revenues, partially offset by the $96.2 million increase in operating costs, $43.0 million increase in depreciation expense, $15.8 million increase in SG&A expense, $9.9 million expense charge recorded for the loss on our prior office leases, $3.5 million gain from litigation settlement received in 2012, $1.3 million increase in loss on disposal of assets and $0.8 million increase in amortization of intangibles expense.

Operating income as a percentage of revenues increased 2.1 percentage points to 23.0% for the three months ended September 30, 2013, from 20.9% for the three months ended September 30, 2012. The increase as a percentage of revenues was comprised of a 2.7 percentage point decrease in cost of operations, 0.7 percentage point decrease in SG&A expense, 0.3 percentage point decrease in amortization expense, 0.3 percentage point decrease in loss on disposal of assets and 0.1 percentage point decrease due to the aforementioned adjustment to reduce the loss on our prior office leases, partially offset by the 1.2 percentage point increase in depreciation expense and 0.8 percentage point decrease in gain from litigation settlement.

Operating income as a percentage of revenues increased 1.0 percentage points to 20.5% for the nine months ended September 30, 2013, from 19.5% for the nine months ended September 30, 2012. The increase as a percentage of revenues was comprised of a 2.5 percentage point decrease in cost of operations, 0.7 percentage point decrease in SG&A expense and 0.2 percentage point decrease in amortization expense, partially offset by a 1.4 percentage point increase in depreciation expense, 0.7 percentage point increase in loss on prior office leases and 0.3 percentage point decrease in gain from litigation settlement.

Interest Expense. Interest expense increased $6.0 million, or 49.9%, to $17.9 million for the three months ended September 30, 2013, from $11.9 million for the three months ended September 30, 2012, due to the following changes for the comparable periods in 2012 and 2013: an increase of $4.0 million from the October 2012 incurrence of our term loan facility to fund a portion of the consideration for the R360 acquisition, an increase of $1.2 million due to an increase in the average outstanding balance on our senior revolving credit facility due to additional borrowings to fund a portion of the consideration for the R360 acquisition, an increase of $0.4 million due to an increase in the applicable margin above the base rate or LIBOR rate under our senior revolving credit facility as a result of our leverage ratio increasing due to our higher total debt balance, an increase of $0.3 million from the amortization of debt issuance costs associated with our term loan facility and amended credit facility and an increase of $0.1 million resulting from interest accretion expense recorded on long-term liabilities recorded at fair value associated with acquisitions closed during, or subsequent to, the three months ended September 30, 2012.

Interest expense increased $19.8 million, or 54.9%, to $55.9 million for the nine months ended September 30, 2013, from $36.1 million for the nine months ended September 30, 2012, due to the following changes for the comparable periods in 2012 and 2013: an increase of $13.2 million from the October 2012 incurrence of our term loan facility to fund a portion of the consideration for the R360 acquisition, an increase of $3.9 million due to an increase in the average outstanding balance on our senior revolving credit facility due to additional borrowings to fund a portion of the consideration for the R360 acquisition, an increase of $1.1 million due to an increase in the applicable margin above the base rate or LIBOR rate under our senior revolving credit facility as a result of our leverage ratio increasing due to our higher total debt balance, an increase of $0.8 million from the amortization of debt issuance costs associated with our term loan facility and amended credit facility, an increase of $0.6 million resulting from interest accretion expense recorded on long-term liabilities recorded at fair value associated with acquisitions closed during, or subsequent to, the nine months ended September 30, 2012, and an increase of $0.2 million due to the commencement of a $150 million interest rate swap in April 2012 with a fixed rate of 0.80%.

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Other Income (Expense), Net. Other income (expense), net, was an income total of $0.8 million for each of the three month periods ended September 30, 2013 and 2012. Other income (expense), net, decreased $1.8 million, to an expense total of $0.1 million for the nine months ended September 30, 2013, from an income total of $1.7 million for the nine months ended September 30, 2012. The decrease was primarily attributable to net increases to the fair value of amounts payable under liability-classified contingent consideration arrangements associated with acquisitions closed prior to 2013.

Income Tax Provision. Income taxes increased $9.2 million, or 32.5%, to $37.6 million for the three months ended September 30, 2013, from $28.4 million for the three months ended September 30, 2012, as a result of increased pre-tax income.

Income taxes increased $15.0 million, or 19.3%, to $93.0 million for the nine months ended September 30, 2013, from $78.0 million for the nine months ended September 30, 2012, as a result of increased pre-tax income.

Our effective tax rates for the three months ended September 30, 2013 and 2012, were 38.2% and 36.4%, respectively.

Our effective tax rates for the nine months ended September 30, 2013 and 2012, were 38.8% and 38.7%, respectively.

During the nine months ended September 30, 2012, income tax expense and our effective tax rate were impacted by $1.1 million and 0.5 percentage points, respectively, due to $2.9 million of the $3.6 million equity-based compensation granted to certain executive officers, incurred at the time the executives agreed to modifications to their employment contracts, being non-deductible expenses.

Our reconciliation of the income tax provision to the 2011 federal and certain state tax returns, which were filed in the third quarter of 2012, decreased our tax expense by $1.8 million and reduced our effective tax rates by 2.3 percentage points for the three months ended September 30, 2012 and 0.9 percentage points for the nine months ended September 30, 2012. Our reconciliation of the income tax provision to the 2012 federal and certain state tax returns, which were filed in the third quarter of 2013, decreased our tax expense by $0.8 million and reduced our effective tax rates by 0.8 percentage points for the three months ended September 30, 2013 and 0.3 percentage points for the nine months ended September 30, 2013.

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SEGMENT RESULTS

General

No single contract or customer accounted for more than 10% of our total revenues at the consolidated or reportable segment level during the periods presented. The table below shows for the periods indicated our total reported revenues attributable to services provided (dollars in thousands).

	Three months ended September 30,										Nine months ended September 30,
	2013					2012					2013					2012
Solid waste collection	$	312,872		55.0	%	$	304,166		62.8	%	$	912,488		55.9	%	$	880,920		63.5	%
Solid waste disposal and transfer		158,142		27.8			142,293		29.3			434,513		26.6			390,576		28.2
E&P waste treatment, disposal and recovery		68,605		12.0			5,824		1.2			194,720		12.0			15,458		1.1
Solid waste recycling		18,402		3.2			18,712		3.9			55,806		3.4			61,809		4.4
Intermodal and other		11,329		2.0			13,604		2.8			34,702		2.1			38,232		2.8
		569,350		100.0	%		484,599		100.0	%		1,632,229		100.0	%		1,386,995		100.0	%
Less: intercompany elimination		(65,704	)				(58,945	)				(189,311	)				(174,180	)
Total revenue	$	503,646				$	425,654				$	1,442,918				$	1,212,815

Our CODM evaluates operating segment profitability and determines resource allocations based on several factors, of which the primary financial measure is EBITDA. EBITDA is not a measure of operating income, operating performance or liquidity under GAAP and may not be comparable to similarly titled measures reported by other companies. Our management uses EBITDA in the evaluation of segment operating performance as it is a profit measure that is generally within the control of the operating segments.

Prior to October 2012, we managed our operations through three geographic operating segments (Western, Central and Eastern), which were also our reportable segments. In October 2012, as a result of the R360 acquisition, we realigned our reporting structure and created a fourth operating segment, the E&P segment, which includes the majority of our E&P waste treatment and disposal operations. As a result, our three geographic operating segments and our E&P segment comprise our reportable segments. Additionally, in January 2013, we transferred an E&P operation in Louisiana, owned by us prior to the R360 acquisition, from our Central segment to our E&P segment. Each operating segment is responsible for managing several vertically integrated operations, which are comprised of districts. The segment information presented herein reflects the addition of the new E&P segment and the transfer of our E&P operation in Louisiana to the E&P segment. Under the current structure, our Western segment is comprised of operating locations in Alaska, California, Idaho, Montana, Nevada, Oregon, Washington and western Wyoming; our Central segment is comprised of operating locations in Arizona, Colorado, Kansas, Louisiana, Minnesota, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, Utah and eastern Wyoming; and our Eastern segment is comprised of operating locations in Alabama, Illinois, Iowa, Kentucky, Massachusetts, Michigan, Mississippi, New York, North Carolina, South Carolina and Tennessee. The E&P segment is comprised of our E&P operations in Louisiana, New Mexico, North Dakota, Oklahoma, Texas, Wyoming and along the Gulf of Mexico.

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Revenues, net of intercompany eliminations, for our reportable segments are shown in the following table in thousands and as a percentage of total revenues for the periods indicated:

	Three months ended September 30,								Nine months ended September 30,
	2013				2012				2013				2012
Western	$	210,211	41.7	%	$	203,963	41.4	%	$	606,195	42.0	%	$	586,166	42.2	%
Central		134,333	26.7			125,795	26.7			379,360	26.3			342,305	26.1
Eastern		96,060	19.1			92,758	19.6			279,554	19.4			275,431	19.5
E&P		63,042	12.5			3,138	12.3			177,809	12.3			8,913	12.2
	$	503,646	100.0	%	$	425,654	100.0	%	$	1,442,918	100.0	%	$	1,212,815	100.0	%

EBITDA for our reportable segments is shown in the following table in thousands and as a percentage of total revenues for the periods indicated:

	Three months ended September 30,									Nine months ended September 30,
	2013				2012					2013					2012
Western	$	67,773	13.4	%	$	61,119		14.4	%	$	188,736		13.1	%	$	173,810		14.4	%
Central		48,845	9.7			47,072		11.1			137,600		9.5			122,688		10.1
Eastern		28,038	5.6			26,113		6.1			82,947		5.8			77,879		6.4
E&P		31,125	6.2			2,122		0.5			82,036		5.7			6,011		0.5
Corporate(a)		188	—			(1,992	)	(0.5	)		(2,679	)	(0.2	)		(9,823	)	(0.8	)
	$	175,969	34.9	%	$	134,434		31.6	%	$	488,640		33.9	%	$	370,565		30.6	%

(a) Corporate functions include accounting, legal, tax, treasury, information technology, risk management, human resources, training and other administrative functions. Amounts reflected are net of allocations to the four operating segments.

A reconciliation of EBITDA to Net income is included in Note 8 to our Condensed Consolidated Financial Statements included in Part 1, Item 1 of this report.

Significant changes in revenue and EBITDA for our reportable segments for the three and nine month periods ended September 30, 2013, compared to the three and nine month periods ended September 30, 2012, are discussed below:

Segment Revenue

Revenue in our Western segment increased $6.2 million, or 3.1%, to $210.2 million for the three months ended September 30, 2013, from $204.0 million for the three months ended September 30, 2012. The components of the increase consisted of volume increases of $5.0 million, net price increases of $3.9 million, revenue growth from acquisitions closed during, or subsequent to, the three months ended September 30, 2012, of $0.7 million and recyclable commodity sales increases of $0.3 million, partially offset by intermodal decreases of $2.2 million, decreases of $1.4 million from divested operations and other revenue decreases of $0.1 million.

Revenue in our Western segment increased $20.0 million, or 3.4%, to $606.2 million for the nine months ended September 30, 2013, from $586.2 million for the nine months ended September 30, 2012. The components of the increase consisted of net price increases of $13.3 million, revenue growth from acquisitions closed during, or subsequent to, the nine months ended September 30, 2012, of $12.8 million and volume increases of $2.7 million, partially offset by recyclable commodity sales decreases of $2.8 million, intermodal revenue decreases of $3.3 million, decreases of $2.0 million from divested operations and other revenue decreases of $0.7 million.

Revenue in our Central segment increased $8.5 million, or 6.8%, to $134.3 million for the three months ended September 30, 2013, from $125.8 million for the three months ended September 30, 2012. The components of the increase consisted of net price increases of $4.5 million, volume increases of $3.5 million, recyclable commodity sales increases of $0.3 million, other revenue increases of $0.1 million and revenue growth from acquisitions closed during, or subsequent to, the three months ended September 30, 2012, of $0.1 million.

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Revenue in our Central segment increased $37.1 million, or 10.8%, to $379.4 million for the nine months ended September 30, 2013, from $342.3 million for the nine months ended September 30, 2012. The components of the increase consisted of revenue growth from acquisitions closed during, or subsequent to, the nine months ended September 30, 2012, of $18.0 million, net price increases of $12.9 million, volume increases of $6.1 million and other revenue increases of $0.4 million, partially offset by recyclable commodity sales decreases of $0.3 million.

Revenue in our Eastern segment increased $3.3 million, or 3.6%, to $96.1 million for the three months ended September 30, 2013, from $92.8 million for the three months ended September 30, 2012. The components of the increase consisted of net price increases of $3.0 million, volume increases of $0.9 million and revenue growth from acquisitions closed during, or subsequent to, the three months ended September 30, 2012, of $0.3 million, partially offset by recyclable commodity sales decreases of $0.8 million and decreases of $0.1 million from divested operations.

Revenue in our Eastern segment increased $4.2 million, or 1.5%, to $279.6 million for the nine months ended September 30, 2013, from $275.4 million for the nine months ended September 30, 2012. The components of the increase consisted of net price increases of $8.9 million, revenue growth from acquisitions closed during, or subsequent to, the nine months ended September 30, 2012, of $0.9 million and other revenue increases of $0.4 million, partially offset by volume decreases of $2.9 million, recyclable commodity sales decreases of $2.8 million and decreases of $0.3 million from divested operations.

Revenue in our E&P segment increased $59.9 million, to $63.0 million for the three months ended September 30, 2013, from $3.1 million for the three months ended September 30, 2012. The components of the increase consisted of revenue from the R360 acquisition and other acquisitions closed subsequent to the three months ended September 30, 2012 of $61.2 million, partially offset by volume decreases of $1.3 million.

Revenue in our E&P segment increased $168.9 million, to $177.8 million for the nine months ended September 30, 2013, from $8.9 million for the nine months ended September 30, 2012. The components of the increase consisted of revenue from the R360 acquisition and other acquisitions closed subsequent to the nine months ended September 30, 2012 of $171.0 million, partially offset by volume decreases of $2.1 million.

Segment EBITDA

EBITDA in our Western segment increased $6.7 million, or 10.9%, to $67.8 million for the three months ended September 30, 2013, from $61.1 million for the three months ended September 30, 2012. The increase was primarily due to price increases charged to our customers, increased roll off and landfill volumes, decreased rail transportation expenses at our intermodal operations, decreased expenses associated with the cost of recyclable commodities and decreased auto and workers’ compensation expense under our high deductible insurance program, partially offset by decreased recyclable commodity revenue, decreased intermodal revenue, increased third party trucking and transportation expenses, increased disposal expenses and increased direct and administrative labor expenses.

EBITDA in our Western segment increased $14.9 million, or 8.6%, to $188.7 million for the nine months ended September 30, 2013, from $173.8 million for the nine months ended September 30, 2012. The increase was primarily due to income generated from acquisitions closed during, or subsequent to, the nine months ended September 30, 2012, price increases charged to our customers, increased landfill volumes, decreased rail transportation expenses at our intermodal operations, decreased expenses associated with the cost of recyclable commodities and decreased auto and workers’ compensation expense under our high deductible insurance program, partially offset by decreased recyclable commodity revenue, decreased intermodal revenue, increased taxes on revenues, increased third party trucking and transportation expenses and increased direct and administrative labor expenses.

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EBITDA in our Central segment increased $1.7 million, or 3.8%, to $48.8 million for the three months ended September 30, 2013, from $47.1 million for the three months ended September 30, 2012. The increase was primarily due to price increases charged to our customers, increased collection volumes, increased recyclable commodity revenue and decreased allocation of expenses from corporate due to a decrease in the allocation rate, partially offset by increased third party trucking and transportation expenses, increased disposal expenses, increased direct and administrative labor expenses and increased diesel fuel expenses.

EBITDA in our Central segment increased $14.9 million, or 12.2%, to $137.6 million for the nine months ended September 30, 2013, from $122.7 million for the nine months ended September 30, 2012. The increase was primarily due to income generated from acquisitions closed during, or subsequent to, the nine months ended September 30, 2012, price increases charged to our customers, increased landfill volumes, decreased auto and workers’ compensation expense under our high deductible insurance program and decreased allocation of expenses from corporate due to a decrease in the allocation rate, partially offset by increased third party trucking and transportation expenses, increased direct and administrative labor expenses, increased diesel fuel expenses, increased disposal expenses, increased truck, container and equipment maintenance and repair expenses and increased insurance premiums under our high deductible insurance program.

EBITDA in our Eastern segment increased $1.9 million, or 7.4%, to $28.0 million for the three months ended September 30, 2013, from $26.1 million for the three months ended September 30, 2012. The increase was primarily due to price increases charged to our customers, increased roll off and landfill volumes, decreased expenses associated with the cost of recyclable commodities and decreased allocation of expenses from corporate due to a decrease in the allocation rate, partially offset by decreased commercial collection volumes, increased diesel fuel expenses, increased disposal expenses and increased direct and administrative labor expenses.

EBITDA in our Eastern segment increased $5.0 million, or 6.5%, to $82.9 million for the nine months ended September 30, 2013, from $77.9 million for the nine months ended September 30, 2012. The increase was primarily due to price increases charged to our customers, increased landfill volumes, decreased expenses associated with the cost of recyclable commodities, decreased auto and workers’ compensation expense under our high deductible insurance program and decreased allocation of expenses from corporate due to a decrease in the allocation rate, partially offset by decreased recyclable commodity revenue, decreased commercial collection volumes, increased diesel fuel expenses and increased direct and administrative labor expenses.

EBITDA in our E&P segment increased $29.0 million, to $31.1 million for the three months ended September 30, 2013, from $2.1 million for the three months ended September 30, 2012. The increase was primarily attributable to $27.8 million of EBITDA generated from the R360 acquisition and other acquisitions closed subsequent to the three months ended September 30, 2012, partially offset by increased cell processing reserves and decreased volumes at operations owned in the comparable periods.

EBITDA in our E&P segment increased $76.0 million, to $82.0 million for the nine months ended September 30, 2013, from $6.0 million for the nine months ended September 30, 2012. The increase was primarily attributable to $49.3 million of EBITDA generated from the R360 acquisition and other acquisitions closed subsequent to the nine months ended September 30, 2012, partially offset by increased cell processing reserves and decreased volumes at operations owned in the comparable periods.

EBITDA at Corporate increased $2.2 million, to $0.2 million for the three months ended September 30, 2013, from a loss of $2.0 million for the three months ended September 30, 2012. The increase was primarily due to decreased expenses associated with the relocation of our corporate headquarters from Folsom, California to The Woodlands, Texas, which was substantially completed in 2012, partially offset by an increase in cash incentive compensation expense, an increase in equity-based compensation expense associated with our annual recurring grant of restricted stock units to our personnel and an increase in payroll expenses.

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EBITDA at Corporate increased $7.1 million, to a loss of $2.7 million for the nine months ended September 30, 2013, from a loss of $9.8 million for the nine months ended September 30, 2012. The lower loss was due to decreased relocation expenses primarily associated with the relocation of our corporate headquarters from Folsom, California to The Woodlands, Texas, which was substantially completed in 2012, a decrease in total equity-based compensation expense primarily resulting from a non-recurring grant in 2012 of $3.6 million of immediately vested restricted stock units to certain executive officers at the time the executives agreed to modifications to their employment contracts and a decrease in direct acquisition expenses, partially offset by an increase in cash incentive compensation expense, an increase in equity-based compensation expense associated with our annual recurring grant of restricted stock units to our personnel, an increase in professional fee expenses and an increase in payroll expenses.

LIQUIDITY AND CAPITAL RESOURCES

The following table sets forth certain cash flow information for the nine month periods ended September 30, 2013 and 2012 (in thousands):

	Nine Months Ended September 30,
	2013			2012
Net cash provided by operating activities	$	385,404		$	326,739
Net cash used in investing activities		(120,777	)		(333,652	)
Net cash provided by (used in) financing activities		(268,558	)		97,802
Net increase (decrease) in cash and equivalents		(3,931	)		90,889
Cash and equivalents at beginning of period		23,212			12,643
Cash and equivalents at end of period	$	19,281		$	103,532

Operating Activities Cash Flows

For the nine months ended September 30, 2013, net cash provided by operating activities was $385.4 million. For the nine months ended September 30, 2012, net cash provided by operating activities was $326.7 million. The $58.7 million net increase in cash provided by operating activities was due primarily to the following:

1) An increase in net income of $23.0 million, adjusted for a decrease in cash flows from operating assets and liabilities, net of effects from acquisitions, of $19.9 million to cash provided by operating assets and liabilities of $12.5 million for the nine months ended September 30, 2013, from cash provided by operating assets and liabilities of $32.4 million for the nine months ended September 30, 2012. The significant components of the $12.5 million in net cash inflows from changes in operating assets and liabilities for the nine months ended September 30, 2013, include the following:

a) an increase in cash resulting from a $3.1 million increase in other long term liabilities due primarily to increased deferred compensation plan liabilities resulting from employee contributions and plan earnings;

b) an increase in cash resulting from a $6.9 million decrease in prepaid expenses and other current assets due primarily to a decrease in prepaid income taxes; and

c) an increase in cash resulting from an increase in accrued liabilities of $21.4 million due primarily to an increase in the current portion of income taxes payable and accrued interest due to the timing of interest payments on our notes and term loan facility; partially offset by

d) a decrease in cash resulting from a decrease in deferred revenue of $1.0 million due primarily to timing of advance billings to our customers;

e) a decrease in cash resulting from a $4.2 million increase in accounts receivable due to increased revenues generated from acquisitions; and

f) a decrease in cash resulting from a $13.4 million decrease in accounts payable due primarily to the timing of payments;

2) An increase in depreciation and amortization expense of $43.7 million due primarily to assets acquired in acquisitions closed during, or subsequent to, the nine months ended September 30, 2012 and increased depletion expense resulting from higher landfill volumes;

3) An increase in our loss on prior office leases of $9.9 million due primarily to the cessation of use of our former corporate headquarters in Folsom, California in 2013;

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4) An increase in loss on disposal of assets of $1.3 million due primarily to the net impact of the sale of two operating location in 2013;

5) An increase in our provision for deferred taxes of $6.0 million due primarily to an increase in the tax deductibility of goodwill as a result of goodwill recorded from acquisitions closed during, and subsequent to, the nine months ended September 30, 2012 as well as other tax deductible timing differences associated with depreciation, partially offset by the deferred tax benefit from the loss on the prior office leases recorded in 2013 primarily associated with our former corporate headquarters; less

6) A decrease in equity-based compensation expense of $2.8 million due to a non-recurring grant of $3.6 million of immediately vested restricted stock units to certain executive officers at the time the executives agreed to modifications to their employment contracts during the nine months ended September 30, 2012 and a $0.6 million decrease in the fair value of warrants issued as compensation for acquisition-related services due to a decline in acquisition activity, partially offset by a $1.4 million increase associated with our annual grant of restricted stock units to our personnel; less

7) An increase in payment of contingent consideration recorded in earnings of $5.1 million due primarily to the final contingent consideration payout resulting from the completion of an earnings target for the 2012 acquisition of SKB exceeding the fair value of the contingent consideration liability recorded at the acquisition close date.

As of September 30, 2013, we had a working capital deficit of $39.9 million, including cash and equivalents of $19.3 million. Our working capital deficit decreased $15.2 million from a deficit of $55.1 million at December 31, 2012, including cash and equivalents of $23.2 million. To date, we have experienced no loss or lack of access to our cash or cash equivalents; however, we can provide no assurances that access to our cash and cash equivalents will not be impacted by adverse conditions in the financial markets. Our strategy in managing our working capital is generally to apply the cash generated from our operations that remains after satisfying our working capital and capital expenditure requirements, along with stock repurchase and dividend programs, to reduce the unhedged portion of our indebtedness under our credit facility and to minimize our cash balances.

Investing Activities Cash Flows

Net cash used in investing activities decreased $212.9 million to $120.8 million for the nine months ended September 30, 2013, from $333.7 million for the nine months ended September 30, 2012. The significant components of the decrease in net cash used include the following:

1) A decrease in payments for acquisitions of $221.2 million as we paid cash consideration during the nine months ended September 30, 2012 for the acquisitions of Alaska Waste, SKB Environmental and five other solid waste collection businesses and we have not closed a significant acquisition during the nine months ended September 30, 2013;

2) A cash receipt of $18.0 million resulting from the settlement of the final closing date net working capital with the former owners of R360; and

3) An increase in proceeds from disposal of assets of $7.0 million due primarily to the sale of two operating locations in 2013; less

4) An increase in capital expenditures for property and equipment of $29.9 million due primarily to expenditures to support acquisitions closed during, or subsequent to, the nine months ended September 30, 2012, expenditures for leasehold improvements at our new corporate headquarters in The Woodlands, Texas and expenditures for trucks in our San Jose, California location that operate on compressed natural gas.

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Financing Activities Cash Flows

Net cash provided by financing activities decreased $366.4 million to net cash used in financing activities of $268.6 million for the nine months ended September 30, 2013, from net cash provided by financing activities of $97.8 million for the nine months ended September 30, 2012. The significant components of the decrease include the following:

1) A decrease in cash flows from proceeds from common stock offerings of $369.6 million, net, due to the sale during the nine months ended September 30, 2012 of 12,000,000 shares of our common stock in a public offering;

2) An increase in payment of contingent consideration recorded at close of $19.4 million due primarily to the payout of the fair value of the contingent consideration liability recorded at the close date for the 2012 acquisition of SKB resulting from the completion of an earnings target; and

3) An increase in cash dividends paid of $4.8 million due to an increase in our quarterly rate from $0.09 per share for the nine months ended September 30, 2012 to $0.10 per share for the nine months ended September 30, 2013 and an increase in our total common shares outstanding; less

4) A decrease in payments to repurchase our common stock of $18.6 million due to no shares being repurchased during the nine months ended September 30, 2013; less

5) A decrease in net repayments of long-term borrowings of $5.3 million due primarily to net repayments under our credit facility and debt assumed in acquisitions that was paid at close of $194.0 million and $13.0 million, respectively, during the nine months ended September 30, 2012, exceeding the net repayments under our credit facility and term loan facility of $123.5 million and $80.0 million, respectively, during the nine months ended September 30, 2013.

Our business is capital intensive. Our capital requirements include acquisitions and capital expenditures for landfill cell construction, landfill development, landfill closure activities and intermodal facility construction in the future.

Our Board of Directors has authorized a common stock repurchase program for the repurchase of up to $1.2 billion of our common stock through December 31, 2014. Under the program, stock repurchases may be made in the open market or in privately negotiated transactions from time to time at management’s discretion. The timing and amounts of any repurchases will depend on many factors, including our capital structure, the market price of the common stock and overall market conditions. As of each of September 30, 2013 and 2012, we had repurchased in aggregate 39.9 million shares of our common stock at an aggregate cost of $784.0 million. As of September 30, 2013, the remaining maximum dollar value of shares available for purchase under the program was approximately $416.0 million. No shares were repurchased under the program during the three or nine months ended September 30, 2013.

Our Board of Directors authorized the initiation of a quarterly cash dividend in October 2010 and has increased it on an annual basis. Cash dividends of $37.0 million and $32.2 million were paid during the nine months ended September 30, 2013 and 2012, respectively. In October 2013, our Board of Directors authorized an increase to our regular quarterly cash dividend of $0.015, from $0.10 to $0.115 per share. We cannot assure you as to the amounts or timing of future dividends.

We made $140.9 million in capital expenditures during the nine months ended September 30, 2013. We expect to make capital expenditures of approximately $200 million in 2013 in connection with our existing business. We have funded and intend to fund the balance of our planned 2013 capital expenditures principally through cash on hand, internally generated funds and borrowings under our credit facility. In addition, we may make substantial additional capital expenditures in acquiring MSW and E&P waste businesses. If we acquire additional landfill disposal facilities, we may also have to make significant expenditures to bring them into compliance with applicable regulatory requirements, obtain permits or expand our available disposal capacity. We cannot currently determine the amount of these expenditures because they will depend on the number, nature, condition and permitted status of any acquired landfill disposal facilities. We believe that our cash and equivalents, credit facility and the funds we expect to generate from operations will provide adequate cash to fund our working capital and other cash needs for the foreseeable future. However, disruptions in the capital and credit markets could adversely affect our ability to draw on our credit facility or raise other capital. Our access to funds under the credit facility is dependent on the ability of the banks that are parties to the facility to meet their funding commitments. Those banks may not be able to meet their funding commitments if they experience shortages of capital and liquidity or if they experience excessive volumes of borrowing requests within a short period of time.

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We are a well-known seasoned issuer with an effective shelf registration statement on Form S-3 filed in February 2012, which registers an unspecified amount of debt or equity securities, including preferred securities, warrants, stockholder rights and units. We may in the future issue debt or equity securities under our shelf registration statement or in private placements from time to time on an opportunistic basis, dependent upon market conditions and available pricing. We expect to use the proceeds from any such offerings for general corporate purposes, including repaying, redeeming or repurchasing debt, acquisitions of additional assets or businesses, capital expenditures and increasing our working capital.

On August 9, 2013, we and certain of our subsidiaries entered into Amendment No. 4 to the Master Note Purchase Agreement, dated July 15, 2008, as amended, increasing the aggregate principal amount of notes issuable under the Master Note Purchase Agreement from $750 million to $1.25 billion, representing a $500 million increase. The Amendment also facilitates the future issuance of floating rate notes.

We currently have $600 million of Notes outstanding under the Master Note Purchase Agreement. With the execution of the Amendment, we will be able to sell up to $650 million of additional Notes under and subject to the terms of the Master Note Purchase Agreement. No existing or potential note holder has any obligation to purchase additional notes under the Master Note Purchase Agreement.

On May 6, 2013, we and certain of our subsidiaries entered into a Second Amended and Restated Credit Agreement (the “credit agreement”) with Bank of America, N.A., as Administrative Agent and the other lenders from time to time party thereto (the “Lenders”). The credit agreement has a scheduled maturity date of May 4, 2018. As of September 30, 2013, we had $663.5 million outstanding under our credit facility, exclusive of outstanding standby letters of credit of $77.3 million.

Pursuant to the credit agreement, the Lenders have committed to provide advances up to an aggregate principal amount of $1.2 billion at any one time outstanding, and we have the option to request increases in the aggregate commitments provided that the aggregate commitments never exceed $1.5 billion. For any such increase, we may ask one or more Lenders to increase their existing commitments and/or invite additional eligible lenders to become Lenders under the credit agreement. As part of the aggregate commitments under the facility, the credit agreement provides for letters of credit to be issued at the request of us in an aggregate amount not to exceed the aggregate commitments and for swing line loans to be issued at our request in an aggregate amount not to exceed a $25 million sublimit.

Interest accrues on advances, at our option, at a LIBOR rate or a base rate plus an applicable margin for each interest period. The issuing fees for all letters of credit are also based on an applicable margin. The applicable margin used in connection with interest rates and fees is based on our consolidated leverage ratio. The applicable margin for LIBOR rate loans and letter of credit fees ranges from 1.125% to 1.750% and the applicable margin for base rate loans and swing line loans ranges from 0.125% to 0.750%. The applicable margin on base rate loans is 0.50% and the current applicable margin on LIBOR loans is 1.50% at September 30, 2013. We also pay a fee based on our consolidated leverage ratio on the actual daily unused amount of the aggregate commitments. The borrowings under the credit agreement are not collateralized. Proceeds of the borrowings under the credit agreement were used to refinance the previous credit facility, under which $680 million was outstanding, and which had a maturity of July 2016, and future borrowings will be used for general corporate purposes, including working capital, capital expenditures and permitted acquisitions.

The credit agreement contains representations, warranties, covenants and events of default, including a change of control event of default and limitations on incurrence of indebtedness and liens, new lines of business, mergers, transactions with affiliates and restrictive agreements. The credit agreement also includes covenants limiting, as of the last day of each fiscal quarter, (a) the ratio of the consolidated funded debt as of such date to the Consolidated EBITDA (as defined in the credit agreement), measured for the preceding 12 months, to not more than 3.50 to 1.00 and (b) the ratio of Consolidated EBIT (as defined in the credit agreement) to consolidated interest expense, in each case, measured for the preceding 12 months, to not less than 2.75 to 1.00. During the continuance of an event of default, the Lenders may take a number of actions, including declaring the entire amount then outstanding under the credit agreement due and payable. As of September 30, 2013, we were in compliance with all applicable covenants in our credit agreement.

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On May 6, 2013, we and certain of our subsidiaries entered into an amendment (the “Term Loan Amendment”) to our term loan facility, which changed the range of the additional interest margin applicable to borrowings under the term loan facility to 1.375% to 2.375%, from 1.375% to 2.500%, with respect to LIBOR borrowings and to 0.375% to 1.375%, from 0.375% to 1.500%, with respect to base rate borrowings. All other original terms remain applicable.

As of September 30, 2013, we had the following contractual obligations:

	Payments Due by Period
	(amounts in thousands)
Recorded Obligations	Total		Less Than 1 Year		1 to 3 Years		3 to 5 Years		Over 5 Years
Long-term debt	$	2,033,120	$	7,456	$	462,674	$	1,269,880	$	293,110
Cash interest payments		275,228		64,733		114,931		65,606		29,958
Contingent consideration		74,927		30,887		2,565		3,340		38,135

Long-term debt payments include:

1) $663.5 million in principal payments due May 2018 related to our credit facility. We may elect to draw amounts on our credit facility in either base rate loans or LIBOR loans. At September 30, 2013, all amounts outstanding under the credit facility were in LIBOR loans, which bear interest at the LIBOR rate plus applicable LIBOR margin (approximately 1.68% at September 30, 2013), and base rate loans, which bear interest at the base rate plus applicable base rate margin (approximately 3.75% at September 30, 2013). As of September 30, 2013, our credit facility allowed us to borrow up to $1.2 billion.

2) $720.0 million in principal payments related to our term loan facility. We may elect to draw amounts on the term loan facility in either base rate loans or LIBOR loans. At September 30, 2013, all amounts outstanding under the term loan facility were in LIBOR loans which bear interest at the LIBOR rate plus the applicable LIBOR margin (approximately 2.06% at September 30, 2013). Our term loan facility matures on October 25, 2017.

3) $175.0 million in principal payments due 2015 related to our 2015 Notes. Holders of the 2015 Notes may require us to purchase their notes in cash at a purchase price of 100% of the principal amount of the 2015 Notes plus accrued and unpaid interest, if any, upon a change in control, as defined in the Master Note Purchase Agreement. The 2015 Notes bear interest at a rate of 6.22%.

4) $100.0 million in principal payments due 2016 related to our 2016 Notes. Holders of the 2016 Notes may require us to purchase their notes in cash at a purchase price of 100% of the principal amount of the 2016 Notes plus accrued and unpaid interest, if any, upon a change in control, as defined in the Master Note Purchase Agreement. The 2016 Notes bear interest at a rate of 3.30%.

5) $50.0 million in principal payments due 2018 related to our 2018 Notes. Holders of the 2018 Notes may require us to purchase their notes in cash at a purchase price of 100% of the principal amount of the 2018 Notes plus accrued and unpaid interest, if any, upon a change in control, as defined in the Master Note Purchase Agreement. The 2018 Notes bear interest at a rate of 4.00%.

6) $175.0 million in principal payments due 2019 related to our 2019 Notes. Holders of the 2019 Notes may require us to purchase their notes in cash at a purchase price of 100% of the principal amount of the 2019 Notes plus accrued and unpaid interest, if any, upon a change in control, as defined in the Master Note Purchase Agreement. The 2019 Notes bear interest at a rate of 5.25%.

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7) $100.0 million in principal payments due 2021 related to our 2021 Notes. Holders of the 2021 Notes may require us to purchase their notes in cash at a purchase price of 100% of the principal amount of the 2021 Notes plus accrued and unpaid interest, if any, upon a change in control, as defined in the Master Note Purchase Agreement. The 2021 Notes bear interest at a rate of 4.64%.

8) $35.2 million in principal payments related to our tax-exempt bonds, which bear interest at variable rates (between 0.11% and 0.18%) at September 30, 2013. The tax-exempt bonds have maturity dates ranging from 2014 to 2033.

9) $14.5 million in principal payments related to our notes payable to sellers and other third parties. Our notes payable to sellers and other third parties bear interest at rates between 2.5% and 10.9% at September 30, 2013, and have maturity dates ranging from 2014 to 2036.

The following assumptions were made in calculating cash interest payments:

1) We calculated cash interest payments on the credit facility using the LIBOR rate plus the applicable LIBOR margin at September 30, 2013. We assumed the credit facility is paid off when it matures in May 2018.

2) We calculated cash interest payments on our interest rate swaps using the stated interest rate in the swap agreement less the LIBOR rate through the term of the credit facility.

Contingent consideration payments include $55.8 million recorded as liabilities in our condensed consolidated financial statements at September 30, 2013, and $19.1 million of future interest accretion on the recorded obligations.

	Amount of Commitment Expiration Per Period
	(amounts in thousands)
Unrecorded Obligations(1)	Total		Less Than 1 Year		1 to 3 Years		3 to 5 Years		Over 5 Years
Operating leases	$	148,472	$	18,998	$	33,553	$	25,388	$	70,533
Unconditional purchase obligations	$	14,243	$	5,277	$	8,966	$	—	$	—

(1) We are party to operating lease agreements and unconditional purchase obligations. These lease agreements and purchase obligations are established in the ordinary course of our business and are designed to provide us with access to facilities and products at competitive, market-driven prices. At September 30, 2013, our unconditional purchase obligations consisted of multiple fixed-price fuel purchase contracts under which we have 4.1 million gallons remaining to be purchased for a total of $14.2 million, plus taxes and transportation costs upon delivery. The current fuel purchase contracts expire on or before December 31, 2014. These arrangements have not materially affected our financial position, results of operations or liquidity during the nine months ended September 30, 2013, nor are they expected to have a material impact on our future financial position, results of operations or liquidity.

We have obtained financial surety bonds, primarily to support our financial assurance needs and landfill and E&P operations. We provided customers and various regulatory authorities with surety bonds in the aggregate amounts of approximately $384.1 million and $361.6 million at September 30, 2013 and December 31, 2012, respectively. These arrangements have not materially affected our financial position, results of operations or liquidity during the nine months ended September 30, 2013, nor are they expected to have a material impact on our future financial position, results of operations or liquidity.

From time to time, we evaluate our existing operations and their strategic importance to us. If we determine that a given operating unit does not have future strategic importance, we may sell or otherwise dispose of those operations. Although we believe our reporting units would not be impaired by such dispositions, we could incur losses on them.

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The disposal tonnage that we received in the nine month periods ended September 30, 2013 and 2012, at all of our landfills during the respective period, is shown below (tons in thousands):

	Nine months ended September 30,
	2013				2012
	Number of Sites		Total Tons		Number of Sites		Total Tons
Owned landfills and landfills operated under life-of-site agreements		49		14,287		44		11,191
Operated landfills		5		337		6		422
		54		14,624		50		11,613

NON-GAAP FINANCIAL MEASURES

Adjusted Free Cash Flow

We present adjusted free cash flow, a non-GAAP financial measure, supplementally because it is widely used by investors as a valuation and liquidity measure in the solid waste industry. Management uses adjusted free cash flow as one of the principal measures to evaluate and monitor the ongoing financial performance of our operations. We define adjusted free cash flow as net cash provided by operating activities, plus proceeds from disposal of assets, plus or minus change in book overdraft, plus excess tax benefit associated with equity-based compensation, less capital expenditures for property and equipment and distributions to noncontrolling interests. We further adjust this calculation to exclude the effects of items management believes impact the ability to assess the operating performance of our business. This measure is not a substitute for, and should be used in conjunction with, GAAP liquidity or financial measures. Other companies may calculate adjusted free cash flow differently. Our adjusted free cash flow for the nine month periods ended September 30, 2013 and 2012, are calculated as follows (amounts in thousands):

	Nine months ended September 30,
	2013			2012
Net cash provided by operating activities	$	385,404		$	326,739
Less: Change in book overdraft		(374	)		(3,383	)
Plus: Proceeds from disposal of assets		9,075			2,107
Plus: Excess tax benefit associated with equity-based compensation		3,539			3,415
Less: Capital expenditures for property and equipment		(140,872	)		(110,995	)
Less: Distributions to noncontrolling interests		(198	)		(94	)
Adjustments:
Payment of contingent consideration recorded in earnings (a)		5,059			—
Corporate office relocation (b)		2,047			8,616
Tax effect (c)		(244	)		(2,467	)
Adjusted free cash flow	$	263,436		$	223,938

(a) Reflects the addback of acquisition-related payments for contingent consideration that were recorded as expenses in earnings and a component of cash flow from operating activities as the amounts paid exceeded the fair value of the contingent consideration recorded at the acquisition date.

(b) Reflects the addback of third party expenses and reimbursable advances to employees associated with the relocation of our corporate headquarters from California to Texas.

(c) The tax effect of the Corporate office relocation is calculated based on the applied tax rates for the respective periods.

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Adjusted EBITDA

We present adjusted EBITDA, a non-GAAP financial measure, supplementally because it is widely used by investors as a performance and valuation measure in the solid waste industry. Management uses adjusted EBITDA as one of the principal measures to evaluate and monitor the ongoing financial performance of our operations. We define adjusted EBITDA as income before income tax provision, plus interest expense, plus depreciation and amortization expense, plus closure and post-closure accretion expense, plus or minus any loss or gain on disposal of assets, plus other expense, less other income. We further adjust this calculation to exclude the effects of items management believes impact the ability to assess the operating performance of our business. This measure is not a substitute for, and should be used in conjunction with, GAAP financial measures. Other companies may calculate adjusted EBITDA differently. Our adjusted EBITDA for the three and nine month periods ended September 30, 2013 and 2012, are calculated as follows (amounts in thousands):

	Three months ended September 30,						Nine months ended September 30,
	2013			2012			2013		2012
Income before income tax provision	$	98,554		$	78,023		$	239,637	$	201,541
Plus: Interest expense		17,911			11,949			55,851		36,063
Plus: Depreciation and amortization		62,074			48,580			181,138		137,446
Plus: Closure and post-closure accretion		727			645			2,241		1,870
Plus/less: Loss (gain) on disposal of assets		(1,129	)		244			1,993		715
Plus/less: Other expense (income), net		(845	)		(825	)		119		(1,663	)
Adjustments:
Plus/less: Loss (gain) on prior office leases (a)		(596	)		—			9,902		—
Plus: Acquisition-related costs (b)		167			1,451			974		3,610
Plus: Corporate relocation expenses (c)		215			1,774			636		6,491
Plus: Named executive officers’ one-time equity grants (d)		—			—			—		3,585
Plus: Gain from litigation settlement (e)		—			(3,537	)		—		(3,537	)
Adjusted EBITDA	$	177,078		$	138,304		$	492,491	$	386,121

(a) Reflects the addback of the loss (gain) on prior office leases resulting primarily from the relocation of our corporate headquarters from California to Texas.

(b) Reflects the addback of acquisition-related transaction costs.

(c) Reflects the addback of costs associated with the relocation of our corporate headquarters from California to Texas.

(d) Reflects the addback of one-time equity compensation expense incurred at the time our named executive officers’ employment contracts were modified.

(e) Reflects the elimination of a non-recurring gain from an arbitration award.

Adjusted Net Income and Adjusted Net Income per Diluted Share

We present adjusted net income and adjusted net income per diluted share, both non-GAAP financial measures, supplementally because they are widely used by investors as a valuation measure in the solid waste industry. Management uses adjusted net income and adjusted net income per diluted share as one of the principal measures to evaluate and monitor the ongoing financial performance of our operations. We provide adjusted net income to exclude the effects of items management believes impact the comparability of operating results between periods. Adjusted net income has limitations due to the fact that it excludes items that have an impact on our financial condition and results of operations. Adjusted net income and adjusted net income per diluted share are not a substitute for, and should be used in conjunction with, GAAP financial measures. Other companies may calculate adjusted net income and adjusted net income per diluted share differently. Our adjusted net income and adjusted net income per diluted share for the three and nine month periods ended September 30, 2013 and 2012, are calculated as follows (amounts in thousands, except per share amounts):

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	Three months ended September 30,						Nine months ended September 30,
	2013			2012			2013			2012
Reported net income attributable to Waste Connections	$	60,706		$	49,385		$	146,229		$	123,104
Adjustments:
Amortization of intangibles (a)		6,211			6,267			18,861			18,115
Acquisition-related expenses (b)		167			1,451			2,661			3,610
Loss (gain) on disposal of assets (c)		(1,129	)		244			1,993			715
Corporate relocation expenses (d)		215			1,774			636			6,491
Loss (gain) on prior office leases (e)		(596	)		—			9,902			—
Named executive officers’ one-time equity grants (f)		—			—			—			3,585
Gain from litigation settlement (g)		—			(3,537	)		—			(3,537	)
Tax effect (h)		(1,862	)		(2,356	)		(13,025	)		(9,920	)
Adjusted net income attributable to Waste Connections	$	63,712		$	53,228		$	167,257		$	142,163
Diluted earnings per common share attributable to Waste Connections common stockholders:
Reported net income	$	0.49		$	0.40		$	1.18		$	1.02
Adjusted net income	$	0.51		$	0.43		$	1.35		$	1.17

(a) Reflects the elimination of the non-cash amortization of acquisition-related intangible assets.

(b) Reflects the elimination of acquisition-related expenses, including transaction costs and adjustments to the fair value of contingent consideration.

(c) Reflects the elimination of a loss (gain) on disposal of assets.

(d) Reflects the addback of costs associated with the relocation of our corporate headquarters from California to Texas.

(e) Reflects the addback of the loss (gain) on prior office leases resulting primarily from the relocation of our corporate headquarters from California to Texas.

(f) Reflects the addback of one-time equity compensation expense incurred at the time our named executive officers’ employment contracts were modified.

(g) Reflects the elimination of a non-recurring gain from an arbitration award.

(h) The aggregate tax effect of the adjustments in footnotes (a) through (g) is calculated based on the applied tax rates for the respective periods.

INFLATION

Other than volatility in fuel prices and labor costs in certain markets, inflation has not materially affected our operations in recent years. Consistent with industry practice, many of our contracts allow us to pass through certain costs to our customers, including increases in landfill tipping fees and, in some cases, fuel costs. Therefore, we believe that we should be able to increase prices to offset many cost increases that result from inflation in the ordinary course of business. However, competitive pressures or delays in the timing of rate increases under our contracts may require us to absorb at least part of these cost increases, especially if cost increases exceed the average rate of inflation. Management’s estimates associated with inflation have an impact on our accounting for landfill liabilities.

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SEASONALITY

We expect our operating results to vary seasonally, with revenues typically lowest in the first quarter, higher in the second and third quarters and lower in the fourth quarter than in the second and third quarters. This seasonality reflects (a) the lower volume of solid waste generated during the late fall, winter and early spring because of decreased construction and demolition activities during winter months in the U.S., and (b) reduced E&P activity during harsh weather conditions, with expected fluctuation between our highest and lowest quarters of approximately 10% to 13%. In addition, some of our operating costs may be higher in the winter months. Adverse winter weather conditions slow waste collection activities, resulting in higher labor and operational costs. Greater precipitation in the winter increases the weight of collected municipal solid waste, resulting in higher disposal costs, which are calculated on a per ton basis.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

In the normal course of business, we are exposed to market risk, including changes in interest rates and prices of certain commodities. We use hedge agreements to manage a portion of our risks related to interest rates and fuel prices. While we are exposed to credit risk in the event of non-performance by counterparties to our hedge agreements, in all cases such counterparties are highly rated financial institutions and we do not anticipate non-performance. We do not hold or issue derivative financial instruments for trading purposes. We monitor our hedge positions by regularly evaluating the positions at market and by performing sensitivity analyses over the unhedged fuel and variable rate debt positions.

At September 30, 2013, our derivative instruments included three interest rate swap agreements that effectively fix the interest rate on the applicable notional amounts of our variable rate debt as follows (dollars in thousands):

Date Entered	Notional Amount		Fixed Interest Rate Paid*			Variable Interest Rate Received		Effective Date	Expiration Date
March 2009	$	175,000		2.85	%		1-month LIBOR	February 2011	February 2014
August 2011	$	150,000		0.80	%		1-month LIBOR	April 2012	January 2015
December 2011	$	175,000		1.60	%		1-month LIBOR	February 2014	February 2017

* plus applicable margin.

Under derivatives and hedging guidance, the interest rate swap agreements are considered cash flow hedges for a portion of our variable rate debt, and we apply hedge accounting to account for these instruments. The notional amounts and all other significant terms of the swap agreements are matched to the provisions and terms of the variable rate debt being hedged.

We have performed sensitivity analyses to determine how market rate changes will affect the fair value of our unhedged floating rate debt. Such an analysis is inherently limited in that it reflects a singular, hypothetical set of assumptions. Actual market movements may vary significantly from our assumptions. Fair value sensitivity is not necessarily indicative of the ultimate cash flow or earnings effect we would recognize from the assumed market rate movements. We are exposed to cash flow risk due to changes in interest rates with respect to the unhedged floating rate balances owed at September 30, 2013 and December 31, 2012, of $1.094 billion and $1.298 billion, respectively, including floating rate debt under our credit facility, term loan facility and floating rate municipal bond obligations. A one percentage point increase in interest rates on our variable-rate debt as of September 30, 2013 and December 31, 2012, would decrease our annual pre-tax income by approximately $10.9 million and $13.0 million, respectively. All of our remaining debt instruments are at fixed rates, or effectively fixed under the interest rate swap agreements described above; therefore, changes in market interest rates under these instruments would not significantly impact our cash flows or results of operations, subject to counterparty default risk.

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The market price of diesel fuel is unpredictable and can fluctuate significantly. We purchase approximately 30 million gallons of fuel per year; therefore, a significant increase in the price of fuel could adversely affect our business and reduce our operating margins. To manage a portion of this risk, we periodically enter into fuel hedge agreements related to forecasted diesel fuel purchases.

At September 30, 2013, our derivative instruments included one fuel hedge agreement as follows:

Date Entered	Notional Amount (in gallons per month)		Diesel Rate Paid Fixed		Diesel Rate Received Variable	Effective Date		Expiration Date
June 2012		300,000	$	3.60	DOE Diesel Fuel Index*		January 2014		December 2015

* If the national U.S. on-highway average price for a gallon of diesel fuel (“average price”), as published by the Department of Energy, exceeds the contract price per gallon, we receive the difference between the average price and the contract price (multiplied by the notional number of gallons) from the counterparty. If the average price is less than the contract price per gallon, we pay the difference to the counterparty.

Under derivatives and hedging guidance, the fuel hedge is considered a cash flow hedge for a portion of our forecasted diesel fuel purchases, and we apply hedge accounting to account for this instrument.

We have performed sensitivity analyses to determine how market rate changes will affect the fair value of our unhedged diesel fuel purchases. Such an analysis is inherently limited in that it reflects a singular, hypothetical set of assumptions. Actual market movements may vary significantly from our assumptions. Fair value sensitivity is not necessarily indicative of the ultimate cash flow or earnings effect we would recognize from the assumed market rate movements. For the year ending December 31, 2013, we expect to purchase approximately 30 million gallons of fuel at market prices. During the three month period of October 1, 2013 to December 31, 2013, we expect to purchase approximately 7.5 million gallons of fuel at market prices; therefore, a $0.10 per gallon increase in the price of fuel over the remaining three months in 2013 would decrease our pre-tax income during this period by approximately $0.8 million.

We market a variety of recyclable materials, including cardboard, office paper, plastic containers, glass bottles and ferrous and aluminum metals. We own and operate 37 recycling processing operations and sell other collected recyclable materials to third parties for processing before resale. To reduce our exposure to commodity price risk with respect to recycled materials, we have adopted a pricing strategy of charging collection and processing fees for recycling volume collected from third parties. In the event of a decline in recycled commodity prices, a 10% decrease in average recycled commodity prices from the average prices that were in effect during the nine months ended September 30, 2013 and 2012, would have had a $5.0 million and $5.5 million impact on revenues for the nine months ended September 30, 2013 and 2012, respectively.

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Item 4. Controls and Procedures

As required by Rule 13a-15(b) under the Securities Exchange Act of 1934, as amended, or the Exchange Act, we carried out an evaluation, under the supervision and with the participation of our management, including our Chief Executive Officer and our Chief Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures (as such term is defined in Rule 13a-15(e) under the Exchange Act) as of the end of the fiscal quarter covered by this Quarterly Report on Form 10-Q. In designing and evaluating the disclosure controls and procedures, our management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives, and our management is required to apply its judgment in evaluating the cost-benefit relationship of possible controls and procedures.

Based on this evaluation, our Chief Executive Officer and Chief Financial Officer concluded as of September 30, 2013, that our disclosure controls and procedures were effective at the reasonable assurance level such that information required to be disclosed in our Exchange Act reports: (1) is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms; and (2) is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

During the quarter ended September 30, 2013, there was no change in our internal control over financial reporting that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

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PART II – OTHER INFORMATION

Item 1. Legal Proceedings

Information regarding our legal proceedings can be found in Note 17 of our Condensed Consolidated Financial Statements included in Part I, Item 1 of this report and is incorporated herein by reference.

Item 6. Exhibits

See Exhibit Index immediately following the signature page of this Quarterly Report on Form 10-Q.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

		WASTE CONNECTIONS, INC.
Date: October 23, 2013	BY:	/s/ Ronald J. Mittelstaedt
		Ronald J. Mittelstaedt,
		Chief Executive Officer
Date: October 23, 2013	BY:	/s/ Worthing F. Jackman
		Worthing F. Jackman,
		Executive Vice President and Chief Financial Officer

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Exhibit Number	Description of Exhibits
3.1	Amended and Restated Certificate of Incorporation of the Registrant, dated as of June 14, 2013 (incorporated by reference to the exhibit filed with the Registrant’s Form 10-Q filed on July 24, 2013)
3.2	Third Amended and Restated Bylaws of the Registrant, effective May 15, 2009 (incorporated by reference to the exhibit filed with the Registrant’s Form 8-K filed on April 23, 2009)
4.1	First Amendment to Term Loan Agreement, dated as of May 6, 2013 (incorporated by reference to the exhibit filed with the Registrant’s Form 10-Q filed on July 24, 2013)
4.2	Second Amended and Restated Credit Agreement, dated as of May 6, 2013 (incorporated by reference to the exhibit filed with the Registrant’s Form 10-Q filed on July 24, 2013)
4.3	Amendment No. 4 to Master Note Purchase Agreement, dated as of August 9, 2013 (incorporated by reference to the exhibit filed with the Registrant’s Form 8-K filed on August 14, 2013)
10.1 +	Employment Agreement between the Registrant and Susan Netherton, dated as of July 23, 2013
31.1	Certification of Chief Executive Officer pursuant to Exchange Act Rules 13a-14(a)/15d-14(a)
31.2	Certification of Chief Financial Officer pursuant to Exchange Act Rules 13a-14(a)/15d-14(a)
32.1	Certifications of Chief Executive Officer and Chief Financial Officer pursuant to 18 U.S.C. §1350
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.LAB	XBRL Taxonomy Extension Labels Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document

+ Management contract or compensatory plan, contract or arrangement.

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EX-10.1

Exhibit 10.1

EMPLOYMENT AGREEMENT

This EMPLOYMENT AGREEMENT (this “Agreement”), is made and entered into effective as of July 23, 2013 (the “Effective Date”), by and between Waste Connections, Inc., a Delaware corporation (the “Company”), and Susan Netherton (the “Employee”).

The Company desires to engage the services and employment of the Employee for the period provided in this Agreement, and the Employee is willing to accept employment by the Company for such period, on the terms and conditions set forth below.

NOW, THEREFORE, in consideration of the premises and the mutual covenants and conditions herein, the Company and the Employee agree as follows:

1. Employment; Acceptance. The Company hereby employs the Employee and the Employee hereby accepts employment by the Company on the terms and conditions hereinafter set forth.

2. Duties and Powers. The Employee is hereby employed as Vice President – People, Training and Development, and, during the Term, the Employee shall devote Employee’s attention, energies and abilities in that capacity to the proper oversight and operation of the Company’s business, to the exclusion of any other occupation. As Vice President – People, Training and Development, the Employee shall report to the President of the Company (the “President”), shall be based at the Company’s corporate headquarters in Texas, and shall be responsible for oversight of the Company’s People, Training and Development department. The Employee shall perform such other duties as the President, the Chief Executive Officer of the Company or the Board of Directors (the “Board”) of the Company may reasonably assign to the Employee from time to time. The Employee shall devote such time and attention to Employee’s duties as are reasonably necessary to the proper discharge of Employee’s responsibilities hereunder. The Employee agrees to perform all duties consistent with: (a) policies established from time to time by the Company; and (b) all applicable legal requirements.

3. Term. The employment of the Employee by the Company pursuant to this Agreement shall commence on the Effective Date and continue until the third (3^rd) anniversary thereof (the “Term”) or until terminated prior to such date when and as provided in Sections 7 and 8. On each anniversary of the Effective Date, this Agreement shall be extended automatically for an additional year, thus extending the Term to three (3) years from each such date, unless either party shall have given the other notice of termination hereof as provided herein.

4. Compensation.

4.1 Base Salary. Commencing on the Effective Date, during the Term, the Company hereby agrees to pay to the Employee an annual base salary of One Hundred Seventy Thousand Dollars ($170,000). When used herein, “Base Salary” shall refer to the base salary described in the preceding sentence that is in effect at that time, and as may be increased from time to time. Such Base Salary shall be payable in accordance with the Company’s normal payroll practices, and such Base Salary is subject to withholding and social security, unemployment and other taxes. Increases in Base Salary shall be considered by the Board and/or the Chief Executive Officer.

EMPLOYMENT AGREEMENT: S. NETHERTON

4.2 Performance Bonus. For the calendar year commencing January 1, 2013, and for each calendar year thereafter, the Employee shall be eligible to receive an annual cash bonus (the “Bonus”) based on the Company’s attainment of reasonable financial objectives to be determined annually by the Board, as well as Employee’s achievement of agreed upon goals annually. The annual Bonus target will equal Forty Percent (40%) of the applicable year’s beginning Base Salary and will be payable if the Board determines, in its sole and exclusive discretion, that that year’s financial objectives have been fully met. The Bonus shall be paid in accordance with the Company’s bonus plan, as approved by the Board, and, in any event, within two and a half (2  ¹⁄₂) months after the end of the fiscal year to which the bonus relates.

4.3 Equity Grants. Employee shall be entitled to participate in stock option (“Option”), restricted stock (“Restricted Stock”), restricted stock units (“RSUs”) and other equity incentive programs presently in effect or in effect from time to time in the future on such terms and to such level of participation as the Board or the Compensation Committee of the Board shall determine to be appropriate, bearing in mind the Employee’s position and responsibilities.

Except as otherwise provided herein, the terms of any Options, Restricted Stock, RSUs and other equity incentives shall be governed by the relevant plans under which they are granted and described in detail in applicable agreements between the Company and the Employee.

4.4 Other Benefits. The Employee shall be entitled to paid annual vacation time, which shall accrue on the same basis as for other employees of the Company of similar rank and in accordance with the Company’s generally established policies, but which shall in no event be less than four (4) weeks for any twelve (12) month period. The Employee also shall be entitled to participate, on the same terms as other employees of the Company participate, in any medical, dental or other health plan, pension plan, profit-sharing plan and life insurance plan that the Company may adopt or maintain, any of which may be changed, terminated or eliminated by the Company at any time in its exclusive discretion.

5. Confidentiality. During the Term of Employee’s employment, and at all times thereafter, the Employee shall not, without the prior written consent of the Company, divulge to any third party or use for Employee’s own benefit or the benefit of any third party or for any purpose other than the exclusive benefit of the Company, any confidential or proprietary business or technical information revealed, obtained or developed in the course of Employee’s employment with the Company and which is otherwise the property of the Company or any of its affiliated corporations, including, but not limited to, trade secrets, customer lists, formulae and processes of manufacture; provided, however, that nothing herein contained shall restrict the Employee’s ability to make such disclosures during the course of Employee’s employment as may be necessary or appropriate to the effective and efficient discharge of Employee’s duties to the Company.

EMPLOYMENT AGREEMENT: S. NETHERTON Page 2

6. Property. Both during the Term of Employee’s employment and thereafter, the Employee shall not remove from the Company’s offices or premises any Company documents, records, notebooks, files, correspondence, reports, memoranda and similar materials or property of any kind unless necessary in accordance with the duties and responsibilities of Employee’s employment. In the event that any such material or property is removed, it shall be returned to its proper file or place of safekeeping as promptly as possible. The Employee shall not make, retain, remove or distribute any copies, or divulge to any third person the nature or contents of any of the foregoing or of any other oral or written information to which Employee may have access, except as disclosure shall be necessary in the performance of Employee’s assigned duties. On the termination of Employee’s employment with the Company, the Employee shall leave with or return to the Company all originals and copies of the foregoing then in Employee’s possession or subject to Employee’s control, whether prepared by the Employee or by others.

7. Termination.

7.1 For Cause. The Company may terminate this Agreement and the Employee’s employment for Cause (as defined below) on delivery to the Employee of a Notice of Termination (as defined in Section 9.1 below). On such termination for Cause, the Employee shall be entitled only to the Employee’s Base Salary through the date of such termination, and shall not be entitled to any other compensation, including, without limitation, any severance compensation. Without limitation of the foregoing, on termination pursuant to this Section 7.1, the Employee shall forfeit: (a) Employee’s Bonus under Section 4.2 for the year in which such termination occurs; and (b) all outstanding but unvested Options and rights relating to capital stock of the Company and all RSUs and shares of the Company’s Restricted Stock issued to the Employee that as of the termination date are still unvested and subject to restrictions on transfer.

7.2 Without Cause. The employment of the Employee may be terminated without Cause at any time by the Company on delivery to the Employee of a written Notice of Termination (as defined in Section 9.1). In the event of such a termination without Cause pursuant to this Section 7.2 that constitutes Employee’s Separation From Service (as defined in Section 9.3), then, subject to the Employee’s execution and non-revocation of a general release of all claims against the Company and its affiliates within sixty (60) days, or such shorter period of time specified by the Company, following the Date of Termination (as defined in Section 9.2), the Company shall, in lieu of any payments under Section 4.1 and 4.2 for the remainder of the Term, pay to the Employee an amount equal to the lesser of: (a) the Employee’s Base Salary for a period of one (1) year from the Date of Termination, and (b) the Employee’s Base Salary for the remainder of the Term (“Severance”). The Severance shall be paid in accordance with the Company’s normal payroll practices and is subject to all withholding requirements under applicable law, with the first such payment to be paid on the sixtieth (60^th) day following the Date of Termination inclusive of any installments that would have been paid had such continuation payments commenced on the Date of Termination. In addition, the Employee shall be entitled to the pro-rated target Bonus available to the Employee under Section 4.2 for the year in which the termination occurs, taking into account the bonus categories and weighting under the Company’s bonus plan and the Company’s and Employee’s achievement thereunder as of the Date of Termination. Further, the Company will pay as incurred the Employee’s expenses, up to Fifteen Thousand Dollars ($15,000), associated with career counseling and resume development. The Company shall also pay to the Employee an amount equal to the Company’s portion (but not the Employee’s portion) of the cost of medical, dental and vision plan insurance for Employee, Employee’s spouse and Employee’s children at the rate in effect on the Date of Termination for a period of one (1) year from the Date of Termination (the “Health Insurance Benefit”). Notwithstanding the previous sentence, with regard to such continuation coverage, if the Company determines in its sole discretion that it cannot provide the foregoing benefit without potentially violating applicable law or potentially incurring penalties, excise taxes and fees pursuant to the Internal Revenue Code of 1986, as amended (the “Code”) and the Department of Treasury regulations promulgated thereunder (including, without limitation, Section 2716 of the Public Health Service Act), the Health Insurance Benefit shall terminate and the Employee shall not be eligible to receive any further benefits related to the Health Insurance Benefit other than as otherwise required by applicable law. In addition, on termination of the Employee under this Section 7.2, all of the Employee’s outstanding but unvested Options and rights relating to capital stock of the Company shall immediately vest and become exercisable, and all RSUs and shares of the Company’s Restricted Stock issued to the Employee shall immediately vest and become unrestricted and freely transferable. The exercisability of any such Options and rights shall be extended to the earlier of (i) the expiration of the term of such Options and rights or (ii) the first (1^st) anniversary of the Date of Termination. The Employee acknowledges that extending the exercisability of any incentive stock options pursuant to this Section 7.2 or Sections 7.3 or 7.4 below, could cause such option to lose its tax-qualified status if it is an incentive stock option under the Code and agrees that the Company shall have no obligation to compensate the Employee for any additional taxes she incurs as a result.

EMPLOYMENT AGREEMENT: S. NETHERTON Page 3

7.3 Termination on Disability. If during the Term the Employee should fail to perform Employee’s duties hereunder on account of Disability, the Company shall have the right, on written Notice of Termination delivered to the Employee, to terminate the Employee’s employment under this Agreement. During the period that the Employee shall have been incapacitated due to physical or mental illness, the Employee shall continue to receive the full Base Salary provided for in Section 4.1 hereof at the rate then in effect until the Date of Termination pursuant to this Section 7.3. In the event of Employee’s termination for Disability pursuant to this Section 7.3 that constitutes Employee’s Separation from Service, then on the Date of Termination, the Company shall, in lieu of any payments under Sections 4.1 and 4.2 for the remainder of the Term, pay to the Employee the payments and other benefits applicable to termination without Cause set forth in Section 7.2 hereof, other than those related to career counseling and resume development. The Company shall also pay the Health Insurance Benefit. Notwithstanding the previous sentence, with regard to such continuation coverage, if the Company determines in its sole discretion that it cannot provide the foregoing benefit without potentially violating applicable law or potentially incurring penalties, excise taxes and fees pursuant to the Code and the Department of Treasury regulations promulgated thereunder (including, without limitation, Section 2716 of the Public Health Service Act), the Health Insurance Benefit shall terminate and the Employee shall not be eligible to receive any further benefits related to the Health Insurance Benefit other than as otherwise required by applicable law. In addition, on such termination, all of the Employee’s outstanding but unvested Options and rights relating to capital stock of the Company shall immediately vest and become exercisable, and all RSUs and shares of the Company’s Restricted Stock issued to the Employee shall immediately vest and become unrestricted and freely transferable. The exercisability of any such Options and rights shall be extended to the earlier of (a) the expiration of the term of such Options or rights or (b) the first (1^st) anniversary of the Employee’s termination.

EMPLOYMENT AGREEMENT: S. NETHERTON Page 4

7.4 Termination on Death. If the Employee shall die during the Term, the employment of the Employee shall thereupon terminate. On the Date of Termination pursuant to this Section 7.4, the Company shall pay, in lieu of any payments under Sections 4.1 and 4.2 for the remainder of the Term, to the Employee’s estate the payments and other benefits applicable to termination without Cause set forth in Section 7.2 hereof, other than those related to career counseling, resume development and the Health Insurance Benefit. In addition, on termination of the Employee under this Section 7.4, all of the Employee’s outstanding but unvested Options and rights relating to capital stock of the Company shall immediately vest and become exercisable, and all RSUs and shares of the Company’s Restricted Stock issued to the Employee shall immediately vest and become unrestricted and freely transferable. The exercisability of any such Options and rights shall be extended to the earlier of (a) the expiration of the term of such Options or rights or (b) the first (1^st) anniversary of the Employee’s termination. The provisions of this Section 7.4 shall not affect the entitlements of the Employee’s heirs, executors, administrators, legatees, beneficiaries or assigns under any employee benefit plan, fund or program of the Company.

7.5 No Limitation on Company’s Right to Terminate. Any other provision in this Agreement to the contrary notwithstanding, the Company shall have the right, in its absolute discretion, to terminate this Agreement and the Employee’s employment hereunder at any time in accordance with the foregoing provisions of this Section 7, it being the intent and purpose of the foregoing provisions of this Section 7 only to set forth the consequences of termination with respect to severance or other compensation payable to the Employee on termination in the circumstances indicated.

8. Termination by Employee. The Employee may terminate her employment hereunder on written Notice of Termination delivered to the Company setting forth the effective Date of Termination. If the Employee terminates her employment hereunder, she shall be entitled to receive, and the Company agrees to pay on the effective Date of Termination specified in the Notice of Termination, her current Base Salary under Section 4.1 hereof on a prorated basis to such Date of Termination. On termination pursuant to this Section 8, the Employee shall forfeit: (a) her Bonus under Section 4.2 for the year in which such termination occurs; and (b) all outstanding but unvested Options and rights relating to capital stock of the Company, and all RSUs and shares of the Company’s Restricted Stock issued to the Employee that as of the termination date are still unvested and subject to restrictions on transfer.

9. Provisions Applicable to Termination of Employment.

9.1 Notice of Termination. Any purported termination of Employee’s employment by the Company pursuant to Section 7 shall be communicated by Notice of Termination to the Employee as provided herein, and shall state the specific termination provisions in this Agreement relied on and set forth in reasonable detail the facts and circumstances claimed to provide a basis for termination of the Employee’s employment (“Notice of Termination”). If the Employee terminates under Section 8, she shall give the Company a Notice of Termination.

EMPLOYMENT AGREEMENT: S. NETHERTON Page 5

9.2 Date of Termination. For all purposes, “Date of Termination” shall mean, for Disability, thirty (30) days after Notice of Termination is given to the Employee (provided the Employee has not returned to duty on a full-time basis during such 30-day period), or, if the Employee’s employment is terminated by the Company for any other reason or by the Employee, the date specified in the Notice of Termination, which shall in no event be more than thirty (30) days after the Notice of Termination is given.

9.3 Separation from Service. To the extent that any payments or benefits constitutes non-exempt “nonqualified deferred compensation” for purposes of Section 409A of the Code, “Separation from Service” shall mean Employee’s “separation from service” with the Company within the meaning of Section 409A of the Code and the regulations and other guidance promulgated thereunder.

9.4 Cause. For purposes of this Agreement, the term “Cause” shall mean:

(a) a material breach by the Employee of any of the terms of this Agreement that is not immediately corrected following written notice of default specifying such breach;

(b) conviction of a felony;

(c) a breach of any of the provisions of Section 11 below;

(d) repeated intoxification with alcohol or drugs while on Company premises during its regular business hours to such a degree that, in the reasonable judgment of the Chief Executive Officer or General Counsel of the Company, the Employee is abusive or incapable of performing her duties and responsibilities under this Agreement; and

(e) misappropriation of property belonging to the Company and/or any of its affiliates.

9.5 Disability. For the purposes of this Agreement, “Disability” shall mean the Employee’s failure to perform her duties hereunder on account of physical or mental illness or other incapacity which the Board shall in good faith determine renders the Employee incapable of performing her duties hereunder, and such illness or other incapacity shall continue for a period of more than six (6) consecutive months.

9.6 Benefits on Termination. On termination of this Agreement by the Company pursuant to Section 7 or the Employee pursuant to Section 8, all profit-sharing, deferred compensation and other retirement benefits payable to the Employee under benefit plans in which the Employee then participated shall be paid to the Employee in accordance with the provisions of the respective plans.

EMPLOYMENT AGREEMENT: S. NETHERTON Page 6

9.7 Section 409A.

(a) To the extent applicable, this Agreement shall be interpreted and applied consistent and in accordance with or exempt from Section 409A of the Code (together with Department of Treasury regulations and other official guidance issued thereunder, “Section 409A”)). Notwithstanding any provision of this Agreement to the contrary, if the Company determines that any compensation or benefits payable under this Agreement may not either be exempt from or compliant with Section 409A, the Company may, with the Employee’s prior written consent, adopt such amendments to this Agreement or adopt other policies and procedures (including amendments, policies and procedures with retroactive effect), or take any other actions, that the Company determines are necessary or appropriate to (i) exempt the compensation and benefits payable under this Agreement from Section 409A and/or preserve the intended tax treatment of such compensation and benefits, or (ii) comply with the requirements of Section 409A; provided, however, that this Section 9.7(a) does not create an obligation on the part of the Company to adopt any such amendment, policy or procedure or take any such other action. To the extent permitted under Section 409A, any separate payment or benefit under this Agreement or otherwise shall not be deemed “nonqualified deferred compensation” subject to Section 409A to the extent provided in the exceptions in Treasury Regulation Section 1.409A-1(b)(4), Section 1.409A-1(b)(9) or any other applicable exception or provision of Section 409A.

(b) Notwithstanding any provision to the contrary in the Agreement, to the extent that any payment or benefits constitute non-exempt “nonqualified deferred compensation” for purposes of Section 409A, if the Employee is deemed by the Company at the time of the Employee’s Separation from Service to be a “specified employee” for purposes of Section 409A(a)(2)(B)(i), to the extent delayed commencement of any portion of the benefits to which the Employee is entitled under this Agreement is required in order to avoid a prohibited distribution under Section 409A(a)(2)(B)(i), such portion of the Employee’s benefits shall not be provided to the Employee prior to the earlier of (A) the expiration of the six (6)-month period measured from the date of Employee’s “separation from service” with the Company (as such term is defined in the Treasury Regulations issued under Section 409A) or (B) the date of the Employee’s death. Upon the expiration of the applicable Section 409A(a)(2)(B)(i) period, all payments deferred pursuant to this Section 9.7 shall be paid in a lump sum to the Employee, and any remaining payments due under this Agreement shall be paid as otherwise provided herein.

(c) To the extent that any reimbursements payable pursuant to this Agreement are subject to the provisions of Section 409A, any such reimbursements payable to Employee pursuant to this Agreement shall be paid to Employee no later than December 31 of the year following the year in which the expense was incurred, the amount of expenses reimbursed in one year shall not affect the amount eligible for reimbursement in any subsequent year, and Employee’s right to reimbursement under this Agreement will not be subject to liquidation or exchange for another benefit.

(d) For purposes of Section 409A (including, without limitation, for purposes of Treasury Regulation Section 1.409A-2(b)(2)(iii)), Employee’s right to receive the installment payments under this Agreement shall be treated as a right to receive a series of separate payments and, accordingly, each such installment payment shall at all times be considered a separate and distinct payment.

EMPLOYMENT AGREEMENT: S. NETHERTON Page 7

10. Change In Control.

10.1 Payments on Termination within Two Years Following Change in Control. Subject to Section 9.7(b), if a Change in Control (as defined below) occurs during the Term and the Employee’s employment with the Company is terminated without Cause within two years after the effective date of the Change in Control, then, in lieu of payments under Sections 4.1 and 4.2 for the remainder of the Term and under Sections 7.2, 7.3 or 7.4, the Employee shall be entitled to receive and the Company agrees to pay to the Employee Severance, as determined under Section 7.2; provided, however, that such amount shall be payable in a lump sum on or within 60 days following the Date of Termination, subject to all withholding requirements under applicable law. In addition, the Employee shall be entitled to the pro-rated target Bonus available to the Employee under Section 4.2 for the year in which the termination occurs, taking into account the bonus categories and weighting under the Company’s bonus plan and the Company’s and Employee’s achievement thereunder as of the Date of Termination. The Company shall also pay the Health Insurance Benefit. Notwithstanding the previous sentence, with regard to such continuation coverage, if the Company determines in its sole discretion that it cannot provide the foregoing benefit without potentially violating applicable law or potentially incurring penalties, excise taxes and fees pursuant to the Code and the Department of Treasury regulations promulgated thereunder (including, without limitation, Section 2716 of the Public Health Service Act), the Health Insurance Benefit shall terminate and the Employee shall not be eligible to receive any further benefits related to the Health Insurance Benefit other than as otherwise required by applicable law.

10.2 Definitions. For the purposes of this Agreement, a Change in Control shall be deemed to have occurred if: (a) there shall be consummated (i) any reorganization, liquidation or consolidation of the Company, or any merger or other business combination of the Company with any other corporation, other than any such merger or other combination that would result in the voting securities of the Company outstanding immediately prior thereto continuing to represent (either by remaining outstanding or by being converted into voting securities of the surviving entity) at least Fifty Percent (50%) of the total voting power represented by the voting securities of the Company or such surviving entity outstanding immediately after such transaction, and (ii) any sale, lease, exchange or other transfer (in one (1) transaction or a series of related transactions) of all, or substantially all, of the assets of the Company; or (b) if any “person” (as defined in Section 13(d) and 14(d) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”)), shall become the “beneficial owner” (as defined in Rule 13d-3 under the Exchange Act), directly or indirectly, of Fifty Percent (50%) or more of the Company’s outstanding voting securities (except that for purposes of this Section 10.2, “person” shall not include any person (or any person that controls, is controlled by or is under common control with such person) who as of the date of this Agreement owns Ten Percent (10%) or more of the total voting power represented by the outstanding voting securities of the Company, or a trustee or other fiduciary holding securities under any employee benefit plan of the Company, or a corporation that is owned directly or indirectly by the stockholders of the Company in substantially the same percentage as their ownership of the Company); or (c) during any twelve (12) month period, individuals who, at the beginning of such period, constituted the entire Board, together with any new director(s) whose election by the Board or nomination for election by the Company’s shareholders was approved by a vote of a least one-half ( ¹⁄₂) of the directors then still in office who either were directors at the beginning of the twelve (12) month period or whose election or nomination for election was previously so approved, shall cease for any reason to constitute at least one-half ( ¹⁄₂) of the membership of the Board.

The term “Parent” means a corporation, partnership, trust, limited liability company or other entity that is the ultimate “beneficial owner” (as defined above) of Fifty Percent (50%) or more of the Company’s outstanding voting securities.

EMPLOYMENT AGREEMENT: S. NETHERTON Page 8

No payments or benefits deemed non-qualified deferred compensation subject to Section 409A shall be payable upon a Change in Control pursuant to this Agreement unless such Change in Control constitutes a “change in control event” with respect to the Company within the meaning of Section 409A.

11. Non-Competition and Non-Solicitation.

11.1 The Employee acknowledges that in the Employee’s position of Vice President – People, Training and Development, the Employee occupies a position of trust and confidence. The Employee understands that the following restrictions may limit the Employee’s ability to earn a livelihood in a business which, directly or indirectly, compete with the Company. However, the Employee agrees that the Employee will receive sufficient consideration and other benefits as an Employee of the Company to clearly justify such restrictions which, in any event, given the Employee’s skills and ability will not prevent the Employee from earning a living. The Employee acknowledges that all restrictions contained in this Section 11 are reasonable and valid as to time, geographical area, and scope of activity to be restrained for the adequate protection of the legitimate business interests and goodwill of the Corporation and are no broader than is necessary to protect such interests and goodwill. In consideration of the provisions hereof, for the Restricted Period (as defined below), the Employee will not, except as specifically provided below, anywhere in any county of any state within the geographic boundaries of the Company’s operations, which, for the purposes of any event occurring prior to the Date of Termination, shall mean the Company’s operations as existing as of the date of such event and, for the purpose of any event occurring on or after the Date of Termination, shall mean the Company’s operations as existing on the Date of Termination (the “Restricted Territory”), directly or indirectly, acting individually or as the owner, shareholder, partner or management employee of any entity: (a) engage in the operation of a solid waste collection, transporting or disposal business, transfer facility, recycling facility, materials recovery facility or solid waste landfill; or (b) enter the employ as a manager of, or render any personal services to or for the benefit of, or assist in or facilitate the solicitation of customers for, or receive remuneration in the form of management salary, commissions or otherwise from, any business engaged in such activities in such counties; or (c) receive or purchase a financial interest in, make a loan to, or make a gift in support of, any such business in any capacity, including without limitation, as a sole proprietor, partner, shareholder, officer, director, principal agent or trustee; provided, however, that the Employee may own, directly or indirectly, solely as an investment, securities of any business traded on any national securities exchange or quoted on any NASDAQ market, provided the Employee is not a controlling person of, or a member of a group which controls, such business and further provided that the Employee does not, in the aggregate, directly or indirectly, own Two Percent (2%) or more of any class of securities of such business. The term “Restricted Period” shall mean the period commencing on the Effective Date and ending on the first anniversary of the Date of Termination.

EMPLOYMENT AGREEMENT: S. NETHERTON Page 9

11.2 After termination of this Agreement by the Company or the Employee pursuant to Section 7 or 8 or termination of this Agreement upon a Change in Control pursuant to Section 10, the Employee shall not: (a) solicit any residential or commercial customer of the Company to whom the Company provides service pursuant to a franchise agreement with a public entity in the Restricted Territory; or (b) solicit any residential or commercial customer of the Company to enter into a solid waste collection account relationship with a competitor of the Company in the Restricted Territory; or (c) solicit any such public entity to enter into a franchise agreement with any such competitor, or (d) solicit any officer, employee or contractor of the Company to enter into an employment or contractor agreement with a competitor of the Company or otherwise interfere in any such relationship; or (e) solicit on behalf of a competitor of the Company any prospective customer of the Company in the Restricted Territory that the Employee called on or was involved in soliciting on behalf of the Company during the Term, in each case until the first anniversary of the Date of Termination.

11.3 If the final judgment of a court of competent jurisdiction declares that any term or provision of this Section 11 is invalid or unenforceable, the parties agree that the court making the determination of invalidity or unenforceability shall have the power to reduce the scope, duration or area of the term or provision, to delete specified words or phrases or to replace any invalid or unenforceable term or provision with a term or provision that is valid and enforceable and that comes closest to expressing the intention of the invalid or unenforceable term or provision, and this Agreement shall be enforceable as so modified after the expiration of the time within which the judgment may be appealed.

12. Indemnification. As an officer and agent of the Company, the Employee shall be fully indemnified by the Company to the fullest extent permitted by applicable law in connection with her employment hereunder.

13. Limitation on Payments. Notwithstanding any other provisions of this Agreement, in the event that any payment or benefit received or to be received by the Employee, whether pursuant to the terms of this Agreement or any other plan, arrangement or agreement (all such payments and benefits being hereinafter referred to as the “Total Payments”), would be subject (in whole or part), to the excise tax imposed under Section 4999 of the Code (the “Excise Tax”), then, after taking into account any reduction in the Total Payments provided by reason of Section 280G of the Code in such other plan, arrangement or agreement, the Total Payments shall be reduced as set forth herein, to the extent necessary so that no portion of the Total Payments is subject to the Excise Tax but only if (a) the net amount of such Total Payments, as so reduced (and after subtracting the amount of all federal, state and local income and employment taxes payable with respect to the foregoing calculated at the maximum marginal income tax rate for each year in which the foregoing shall be paid to the Employee (based on the rate in effect for such year as set forth in the Code as in effect at the time of the first payment of the foregoing) on such reduced Total Payments and after taking into account the phase out of itemized deductions and personal exemptions attributable to such reduced Total Payments) is greater than or equal to (b) the net amount of such Total Payments without such reduction (but after subtracting the amount of all federal, state and local income and employment taxes payable with respect to the foregoing calculated at the maximum marginal income tax rate for each year in which the foregoing shall be paid to the Employee (based on the rate in effect for such year as set forth in the Code as in effect at the time of the first payment of the foregoing) on such Total Payments and the amount of Excise Tax to which the Employee would be subject in respect of such unreduced Total Payments and after taking into account the phase out of itemized deductions and personal exemptions attributable to such unreduced Total Payments). The Total Payments shall be reduced by the Company in its reasonable discretion in the following order: (i) reduction of any cash severance payments otherwise payable to the Employee that are exempt from Section 409A, (ii) reduction of any other cash payments or benefits otherwise payable to the Employee that are exempt from Section 409A, but excluding any payment attributable to the acceleration of vesting or payment with respect to any equity award that is exempt from Section 409A, (iii) reduction of any other payments or benefits otherwise payable to the Employee on a pro-rata basis or such other manner that complies with Section 409A, but excluding any payment attributable to the acceleration of vesting and payment with respect to any equity award that is exempt from Section 409A, and (iv) reduction of any payments attributable to the acceleration of vesting or payment with respect to any equity award that is exempt from Section 409A. For purposes of determining whether and the extent to which the Total Payments will be subject to the Excise Tax, (A) no portion of the Total Payments the receipt or enjoyment of which the Employee shall have waived at such time and in such manner as not to constitute a “payment” within the meaning of Section 280G(b) of the Code shall be taken into account, (B) no portion of the Total Payments shall be taken into account which, in the opinion of independent counsel, consultants or advisors of nationally recognized standing (“Independent Advisors”) selected by the Company, does not constitute a “parachute payment” within the meaning of Section 280G(b)(2) of the Code (including by reason of Section 280G(b)(4)(A) of the Code) and, in calculating the Excise Tax, no portion of such Total Payments shall be taken into account which, in the opinion of Independent Advisors, constitutes reasonable compensation for services actually rendered, within the meaning of Section 280G(b)(4)(B) of the Code, in excess of the Base Amount (as defined in Section 280G(b)(3) of the Code) allocable to such reasonable compensation, and (C) the value of any non cash benefit or any deferred payment or benefit included in the Total Payments shall be determined by the Independent Advisors in accordance with the principles of Sections 280G(d)(3) and (4) of the Code.

EMPLOYMENT AGREEMENT: S. NETHERTON Page 10

14. Survival of Provisions. The obligations of the Company under Section 12 of this Agreement, and of the Employee under Sections 5, 6 and 11 of this Agreement, shall survive both the termination of the Employee’s employment and this Agreement.

15. No Duty to Mitigate; No Offset. The Employee shall not be required to mitigate damages or the amount of any payment contemplated by this Agreement, nor shall any such payment be reduced by any earnings that the Employee may receive from any other sources or offset against any other payments made to her or required to be made to her pursuant to this Agreement; provided, however, in the event that the Employee becomes entitled to or receives any severance, separation, notice or termination payments on account of her employment or termination of employment with the Company, including, for example, any payments required to be paid to the Employee under any Federal, State or local law or pursuant to any agreement (except unemployment benefits payable in accordance with State or Federal law and payment for any unused but accrued vacation), her severance benefits and payments payable under this Agreement shall be reduced by the amount of any such payments paid or payable. Notice and payments in lieu of notice of termination of employment pursuant to the requirements of the Worker Adjustment and Retraining Notification Act and/or any similar federal, state or local law (collectively referred to as “WARN laws”) are subject to this Section. If the Employee is entitled to receive any payments or benefits from the Company pursuant to WARN laws, then the severance benefits and payments payable under this Agreement shall be reduced by any and all such payments made or such benefits provided by the Company to such employee. If any Employee is entitled to receive notice of termination from the Company pursuant to WARN laws, then the Severance payable under this Agreement shall be reduced by an amount equal to the amount of salary paid and health benefits provided during the notice period provided to the employee by the Company.

EMPLOYMENT AGREEMENT: S. NETHERTON Page 11

16. Assignment; Binding Agreement. The Company may assign this Agreement to any parent, subsidiary, affiliate or successor of the Company. This Agreement is not assignable by the Employee and is binding on her and her executors and other legal representatives. This Agreement shall bind the Company and its successors and assigns and inure to the benefit of the Employee and her heirs, executors, administrators, personal representatives, legatees or devisees. The Company shall assign this Agreement to any entity that acquires its assets or business.

17. Notice. Any written notice under this Agreement shall be personally delivered to the other party or sent by a nationally recognized overnight delivery service or by certified or registered mail, return receipt requested and postage prepaid, to such party at the address set forth in the records of the Company or to such other address as either party may from time to time specify by written notice.

18. Entire Agreement; Amendments. This Agreement contains the entire agreement of the parties relating to the Employee’s employment and supersedes all oral or written prior discussions, agreements and understandings of every nature between them, except for that certain Indemnification Agreement, dated on or about the date hereof, by and between the Company and the Employee, which shall remain in full force and effect. This Agreement may not be changed except by an agreement in writing signed by the Company and the Employee.

19. Waiver. The waiver of a breach of any provision of this Agreement shall not operate as or be construed to be a waiver of any other provision or subsequent breach of this Agreement.

20. Governing Law and Jurisdictional Agreement. This Agreement shall be governed by and construed and enforced in accordance with the laws of the State of Texas. The parties irrevocably and unconditionally submit to the jurisdiction and venue of any court, federal or state, situated within Montgomery County, Texas, for the purpose of any suit, action or other proceeding arising out of, or relating to or in connection with, this Agreement.

21. Severability. In case any one or more of the provisions contained in this Agreement is, for any reason, held invalid in any respect, such invalidity shall not affect the validity of any other provision of this Agreement, and such provision shall be deemed modified to the extent necessary to make it enforceable.

22. Enforcement. It is agreed that it is impossible to measure fully, in money, the damage which will accrue to the Company in the event of a breach or threatened breach of Sections 5, 6, or 11 of this Agreement, and, in any action or proceeding to enforce the provisions of Sections 5, 6 or 11 hereof, the Employee waives the claim or defense that the Company has an adequate remedy at law and will not assert the claim or defense that such a remedy at law exists. The Company is entitled to injunctive relief to enforce the provisions of such Sections as well as any and all other remedies available to it at law or in equity without the posting of any bond. The Employee agrees that if the Employee breaches any provision of Section 11, the Company may recover as partial damages all profits realized by the Employee at any time prior to such recovery on the exercise, grant or issuance of any Option, Restricted Stock, RSU or other equity incentive and the subsequent sale of any shares of the Company’s Common Stock obtained through such exercise, grant or issuance, and may also cancel all outstanding such Options, Restricted Stock, RSUs or other equity incentives.

EMPLOYMENT AGREEMENT: S. NETHERTON Page 12

23. Withholding. All compensation payable to the Employee is subject to all withholding requirements under applicable law.

24. Counterparts. This Agreement may be executed in one or more facsimile or original counterparts, each of which shall be deemed an original and both of which together shall constitute one and the same instrument.

25. Due Authorization. The execution of this Agreement has been duly authorized by the Company by all necessary corporate action.

[Signatures appear on the following page.]

EMPLOYMENT AGREEMENT: S. NETHERTON Page 13

IN WITNESS WHEREOF, this Employment Agreement has been duly executed by or on behalf of the parties hereto as of the date first above written.

EMPLOYEE	WASTE CONNECTIONS, INC.
	By:
Susan Netherton		Ronald J. Mittelstaedt,
		Chief Executive Officer

Address:

EMPLOYMENT AGREEMENT: S. NETHERTON Page S-1

EX-31.1

Exhibit 31.1

CERTIFICATION OF CHAIRMAN AND CHIEF EXECUTIVE OFFICER

I, Ronald J. Mittelstaedt, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Waste Connections, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: October 23, 2013

 /s/ Ronald J. Mittelstaedt

Ronald J. Mittelstaedt

Chairman and

Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION OF CHIEF FINANCIAL OFFICER

I, Worthing F. Jackman, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Waste Connections, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: October 23, 2013

 /s/ Worthing F. Jackman

Worthing F. Jackman

Executive Vice President and

Chief Financial Officer

EX-32.1

Exhibit 32.1

CERTIFICATE OF CHIEF EXECUTIVE OFFICER AND

CHIEF FINANCIAL OFFICER

The undersigned, Ronald J. Mittelstaedt and Worthing F. Jackman, being the duly elected and acting Chief Executive Officer and Chief Financial Officer, respectively, of Waste Connections, Inc., a Delaware corporation (the “Company”), hereby certify pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the quarterly report of the Company on Form 10-Q for the three months ended September 30, 2013, fully complies with the requirements of Section 13(a) of the Securities Exchange Act of 1934, as amended, and that information contained in such report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: October 23, 2013	By:	/s/ Ronald J. Mittelstaedt
		Ronald J. Mittelstaedt
		Chief Executive Officer
Date: October 23, 2013	By:	/s/ Worthing F. Jackman
		Worthing F. Jackman
		Executive Vice President and Chief Financial Officer

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Derivative Financial Instruments

9 Months Ended

Sep. 30, 2013

Derivative Financial Instruments

9. DERIVATIVE FINANCIAL INSTRUMENTS

The Company recognizes all derivatives on the balance sheet at fair value. All of the Company’s derivatives have been designated as cash flow hedges; therefore, the effective portion of the changes in the fair value of derivatives will be recognized in accumulated other comprehensive loss (“AOCL”) until the hedged item is recognized in earnings. The ineffective portion of the changes in the fair value of derivatives will be immediately recognized in earnings. The Company classifies cash inflows and outflows from derivatives within operating activities in the Condensed Consolidated Statements of Cash Flows.

One of the Company’s objectives for utilizing derivative instruments is to reduce its exposure to fluctuations in cash flows due to changes in the variable interest rates of certain borrowings issued under its revolving credit facility. The Company’s strategy to achieve that objective involves entering into interest rate swaps that are specifically designated to the Company’s revolving credit facility and accounted for as cash flow hedges.

At September 30, 2013, the Company’s derivative instruments included three interest rate swap agreements as follows:

Date Entered	Notional Amount		Fixed Interest Rate Paid*			Variable Interest Rate Received		Effective Date		Expiration Date
March 2009	$	175,000		2.85	%		1-month LIBOR		February 2011		February 2014
August 2011	$	150,000		0.80	%		1-month LIBOR		April 2012		January 2015
December 2011	$	175,000		1.60	%		1-month LIBOR		February 2014		February 2017

* plus applicable margin.

Another of the Company’s objectives for utilizing derivative instruments is to reduce its exposure to fluctuations in cash flows due to changes in the price of diesel fuel. The Company’s strategy to achieve that objective involves periodically entering into fuel hedges that are specifically designated to certain forecasted diesel fuel purchases and accounted for as cash flow hedges.

At September 30, 2013, the Company’s derivative instruments included one fuel hedge agreement as follows:

Date Entered	Notional Amount (in gallons per month)		Diesel Rate Paid Fixed (per gallon)		Diesel Rate Received Variable	Effective Date	Expiration Date
June 2012		300,000	$	3.60	DOE Diesel Fuel Index*	January 2014	December 2015

* If the national U.S. on-highway average price for a gallon of diesel fuel (“average price”), as published by the Department of Energy (“DOE”), exceeds the contract price per gallon, the Company receives the difference between the average price and the contract price (multiplied by the notional number of gallons) from the counterparty. If the average price is less than the contract price per gallon, the Company pays the difference to the counterparty.

The fair values of derivative instruments designated as cash flow hedges as of September 30, 2013, were as follows:

Derivatives Designated as Cash	Asset Derivatives			Liability Derivatives
Flow Hedges	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
Interest rate swaps				Accrued liabilities(a)	$	(3,940	)
				Other long-term liabilities		(2,506	)
Fuel hedge	Prepaid expenses and other current assets(b)	$	701
	Other assets, net		972
Total derivatives designated as cash flow hedges		$	1,673		$	(6,446	)

(a) Represents the estimated amount of the existing unrealized losses on interest rate swaps as of September 30, 2013 (based on the interest rate yield curve at that date), included in AOCL expected to be reclassified into pre-tax earnings within the next 12 months. The actual amounts reclassified into earnings are dependent on future movements in interest rates.

(b) Represents the estimated amount of the existing unrealized gains on the fuel hedge as of September 30, 2013 (based on the forward DOE diesel fuel index curve at that date), included in AOCL expected to be reclassified into pre-tax earnings within the next 12 months. The actual amounts reclassified into earnings are dependent on future movements in diesel fuel prices.

The fair values of derivative instruments designated as cash flow hedges as of December 31, 2012, were as follows:

Derivatives Designated as Cash	Asset Derivatives			Liability Derivatives
Flow Hedges	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
Interest rate swaps				Accrued liabilities	$	(5,374	)
				Other long-term liabilities		(5,789	)
Fuel hedge	Other assets, net	$	1,187
Total derivatives designated as cash flow hedges		$	1,187		$	(11,163	)

The following table summarizes the impact of the Company’s cash flow hedges on the results of operations, comprehensive income and AOCL for the three and nine months ended September 30, 2013 and 2012:

Derivatives Designated as Cash Flow Hedges	Amount of Gain or (Loss) Recognized as AOCL on Derivatives, Net of Tax (Effective Portion)(a)						Statement of Income Classification	Amount of (Gain) or Loss Reclassified from AOCL into Earnings, Net of Tax  (Effective Portion) (b),(c)
	Three Months Ended September 30,							Three Months Ended September 30,
	2013			2012				2013		2012
Interest rate swaps	$	(809	)	$	(1,497	)	Interest expense	$	879	$	855
Fuel hedge		271			1,105		Cost of operations		—		(678	)
Total	$	(538	)	$	(392	)		$	879	$	177

Derivatives Designated as Cash Flow Hedges	Amount of Gain or (Loss) Recognized as AOCL on Derivatives, Net of Tax (Effective  Portion)(a)					Statement of Income Classification	Amount of (Gain) or Loss Reclassified from AOCL into Earnings, Net of Tax  (Effective Portion) (b),(c)
	Nine Months Ended September 30,						Nine Months Ended September 30,
	2013		2012				2013		2012
Interest rate swaps	$	323	$	(4,469	)	Interest expense	$	2,595	$	2,409
Fuel hedge		300		1,522		Cost of operations		—		(2,062	)
Total	$	623	$	(2,947	)		$	2,595	$	347

(a) In accordance with the derivatives and hedging guidance, the effective portions of the changes in fair values of interest rate swaps and the fuel hedge have been recorded in equity as a component of AOCL. As the critical terms of the interest rate swaps match the underlying debt being hedged, no ineffectiveness is recognized on these swaps and, therefore, all unrealized changes in fair value are recorded in AOCL. Because changes in the actual price of diesel fuel and changes in the DOE index price do not offset exactly each reporting period, the Company assesses whether the fuel hedge is highly effective using the cumulative dollar offset approach.

(b) Amounts reclassified from AOCL into earnings related to realized gains and losses on interest rate swaps are recognized when interest payments or receipts occur related to the swap contracts, which correspond to when interest payments are made on the Company’s hedged debt.

(c) Amounts reclassified from AOCL into earnings related to realized gains and losses on the fuel hedge are recognized when settlement payments or receipts occur related to the hedge contract, which correspond to when the underlying fuel is consumed.

The Company measures and records ineffectiveness on the fuel hedge in Cost of operations in the Condensed Consolidated Statements of Net Income on a monthly basis based on the difference between the DOE index price and the actual price of diesel fuel purchased, multiplied by the notional number of gallons on the contract. There was no significant ineffectiveness recognized on the fuel hedge during the nine months ended September 30, 2012.

See Note 13 for further discussion on the impact of the Company’s hedge accounting to its consolidated Comprehensive income and AOCL.

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Derivative Financial Instruments - Company's Derivative Instruments of Fuel Hedge Agreements (Detail) (Fuel Hedge Agreements)	9 Months Ended
	Sep. 30, 2013 gal
Fuel Hedge Agreements
Derivative [Line Items]
Date Entered	2012-06
Notional Amount (in gallons per month)	300,000
Diesel Rate Paid Fixed (per gallon)	3.60
Diesel Rate Received Variable	DOE Diesel Fuel Index	[1]
Effective Date	2014-01
Expiration Date	2015-12

[1] If the national U.S. on-highway average price for a gallon of diesel fuel ("average price"), as published by the Department of Energy ("DOE"), exceeds the contract price per gallon, the Company receives the difference between the average price and the contract price (multiplied by the notional number of gallons) from the counterparty. If the average price is less than the contract price per gallon, the Company pays the difference to the counterparty.

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Condensed Consolidated Statements of Net Income (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenues	$ 503,646	$ 425,654	$ 1,442,918	$ 1,212,815
Operating expenses:
Cost of operations	274,141	243,243	794,588	698,351
Selling, general and administrative	53,536	47,977	159,690	143,899
Depreciation	55,863	42,313	162,277	119,331
Amortization of intangibles	6,211	6,267	18,861	18,115
Loss (gain) on disposal of assets	(1,129)	244	1,993	715
Gain from litigation settlement		(3,537)		(3,537)
Loss (gain) on prior office leases	(596)		9,902
Operating income	115,620	89,147	295,607	235,941
Interest expense	(17,911)	(11,949)	(55,851)	(36,063)
Other income (expense), net	845	825	(119)	1,663
Income before income tax provision	98,554	78,023	239,637	201,541
Income tax provision	(37,641)	(28,403)	(93,049)	(77,967)
Net income	60,913	49,620	146,588	123,574
Less: Net income attributable to noncontrolling interests	(207)	(235)	(359)	(470)
Net income attributable to Waste Connections	$ 60,706	$ 49,385	$ 146,229	$ 123,104
Earnings per common share attributable to Waste Connections' common stockholders:
Basic	$ 0.49	$ 0.40	$ 1.18	$ 1.02
Diluted	$ 0.49	$ 0.40	$ 1.18	$ 1.02
Shares used in the per share calculations:
Basic	123,676,936	123,031,259	123,557,317	120,571,106
Diluted	124,279,666	123,665,589	124,089,422	121,198,901
Cash dividends per common share	$ 0.10	$ 0.09	$ 0.30	$ 0.27

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New Accounting Standards

9 Months Ended

Sep. 30, 2013

New Accounting Standards

2. NEW ACCOUNTING STANDARDS

Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income. In February 2013, the FASB issued guidance requiring entities to provide information about the amounts reclassified out of accumulated other comprehensive income (“AOCI”) by component. In addition, it requires entities to present, either on the face of the statement where net income is presented or in the notes, significant amounts reclassified out of AOCI by the respective line items of net income if the amount reclassified is required under GAAP to be reclassified to net income in its entirety in the same reporting period. This guidance is effective prospectively for annual and interim reporting periods beginning after December 15, 2012, with early adoption permitted. The amounts required to be disclosed under this guidance are disclosed in Notes 9 and 13.

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Gain from Litigation Settlement

9 Months Ended

Sep. 30, 2013

Gain from Litigation Settlement

16. GAIN FROM LITIGATION SETTLEMENT

In November 2010, the Company’s subsidiary, Potrero Hills Landfill, Inc. (“PHLF”), which owns and operates the Potrero Hills Landfill in Solano County, California, initiated contractual arbitration proceedings with Judicial Arbitration and Mediation Services, Inc. in San Francisco against The Ratto Group of Companies, Inc. (“Ratto”) alleging Ratto’s breach of the parties’ Solid Waste Disposal Agreement.

The case was arbitrated in February and March 2012 before the Honorable Fern Smith (ret.). On August 13, 2012, Judge Smith issued her Final Award finding that Ratto had breached the Solid Waste Disposal Agreement by failing to include PHLF in its 2010 bid to Sonoma County and awarding PHLF lost profits, attorneys’ fees and costs. Pursuant to this Final Award, on September 13, 2012, Ratto remitted to PHLF $3,537, which was recorded as Gain from litigation settlement in the Condensed Consolidated Statements of Net Income.

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Gain from Litigation Settlement - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012
Litigation And Other Contingencies [Line Items]
Gain from litigation settlement	$ 3,537

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Carrying Values and Fair Values of Debt Instruments (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013		Dec. 31, 2012
Debt Instrument [Line Items]
Carrying value of senior notes	$ 2,033,120		$ 2,238,935
6.22% Senior Notes due 2015
Debt Instrument [Line Items]
Carrying value of senior notes	175,000		175,000
Fair value of senior notes	188,888	[1]	193,949	[1]
3.30% Senior Notes due 2016
Debt Instrument [Line Items]
Carrying value of senior notes	100,000		100,000
Fair value of senior notes	102,274	[1]	103,068	[1]
4.00% Senior Notes due 2018
Debt Instrument [Line Items]
Carrying value of senior notes	50,000		50,000
Fair value of senior notes	51,371	[1]	52,476	[1]
5.25% Senior Notes due 2019
Debt Instrument [Line Items]
Carrying value of senior notes	175,000		175,000
Fair value of senior notes	188,055	[1]	195,584	[1]
4.64% Senior Notes due 2021
Debt Instrument [Line Items]
Carrying value of senior notes	100,000		100,000
Fair value of senior notes	$ 102,541	[1]	$ 107,418	[1]

[1] Senior Notes are classified as Level 2 within the fair value hierarchy. Fair value is based on quotes of bonds with similar ratings in similar industries.

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Fair Value of Financial Instruments

9 Months Ended

Sep. 30, 2013

Fair Value of Financial Instruments

10. FAIR VALUE OF FINANCIAL INSTRUMENTS

The Company’s financial instruments consist primarily of cash and equivalents, trade receivables, restricted assets, trade payables, debt instruments, contingent consideration obligations, interest rate swaps and a fuel hedge. As of September 30, 2013 and December 31, 2012, the carrying values of cash and equivalents, trade receivables, restricted assets, trade payables and contingent consideration are considered to be representative of their respective fair values. The carrying values of the Company’s debt instruments, excluding certain notes as listed in the table below, approximate their fair values as of September 30, 2013 and December 31, 2012, based on current borrowing rates, current remaining average life to maturity and borrower credit quality for similar types of borrowing arrangements, and are classified as Level 2 within the fair value hierarchy. The carrying values and fair values of the Company’s debt instruments where the carrying values do not approximate their fair values as of September 30, 2013 and December 31, 2012, are as follows:

	Carrying Value at				Fair Value* at
	September 30, 2013		December 31, 2012		September 30, 2013		December 31, 2012
6.22% Senior Notes due 2015	$	175,000	$	175,000	$	188,888	$	193,949
3.30% Senior Notes due 2016	$	100,000	$	100,000	$	102,274	$	103,068
4.00% Senior Notes due 2018	$	50,000	$	50,000	$	51,371	$	52,476
5.25% Senior Notes due 2019	$	175,000	$	175,000	$	188,055	$	195,584
4.64% Senior Notes due 2021	$	100,000	$	100,000	$	102,541	$	107,418

* Senior Notes are classified as Level 2 within the fair value hierarchy. Fair value is based on quotes of bonds with similar ratings in similar industries.

For details on the fair value of the Company’s interest rate swaps, fuel hedge and restricted assets, refer to Note 12.

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Changes in Goodwill by Reportable Segment (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 1,636,557	$ 1,116,888
Goodwill acquired	1,733	66,971
Goodwill divested	(749)	(496)
Goodwill, Ending Balance	1,637,541	1,183,363
Western
Goodwill [Line Items]
Goodwill, Beginning Balance	373,143	313,038
Goodwill acquired	521	60,043
Goodwill divested	(749)
Goodwill, Ending Balance	372,915	373,081
Central
Goodwill [Line Items]
Goodwill, Beginning Balance	430,412	424,223
Goodwill transferred	(9,196)
Goodwill acquired	70	6,690
Goodwill divested		(496)
Goodwill, Ending Balance	421,286	430,417
Eastern
Goodwill [Line Items]
Goodwill, Beginning Balance	380,561	379,627
Goodwill acquired	567	238
Goodwill, Ending Balance	381,128	379,865
Exploration and Production
Goodwill [Line Items]
Goodwill, Beginning Balance	452,441
Goodwill transferred	9,196
Goodwill acquired	575
Goodwill, Ending Balance	$ 462,212

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Basic and Diluted Net Income Per Common Share (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Numerator:
Net income attributable to Waste Connections for basic and diluted earnings per share	$ 60,706	$ 49,385	$ 146,229	$ 123,104
Denominator:
Basic shares outstanding	123,676,936	123,031,259	123,557,317	120,571,106
Dilutive effect of stock options and warrants	182,175	303,293	192,054	319,457
Dilutive effect of restricted stock units	420,555	331,037	340,051	308,338
Diluted shares outstanding	124,279,666	123,665,589	124,089,422	121,198,901

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Reconciliation of Final Capping, Closure and Post-Closure Liability Balance (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Reconciliation of Changes in Asset Retirement Obligations [Line Items]
Final capping, closure and post-closure liability at December 31, 2012	$ 46,473
Adjustments to final capping, closure and post-closure liabilities	(3,596)
Liabilities incurred	3,884
Accretion expense associated with landfill obligations	2,077	1,870
Closure payments	(182)
Final capping, closure and post-closure liability at September 30, 2013	$ 48,656

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Landfill Accounting (Tables)

9 Months Ended

Sep. 30, 2013

Reconciliation of Company's Final Capping, Closure and Post-Closure Liability

The following is a reconciliation of the Company’s final capping, closure and post-closure liability balance from December 31, 2012 to September 30, 2013:

Final capping, closure and post-closure liability at December 31, 2012	$	46,473
Adjustments to final capping, closure and post-closure liabilities		(3,596	)
Liabilities incurred		3,884
Accretion expense associated with landfill obligations		2,077
Closure payments		(182	)
Final capping, closure and post-closure liability at September 30, 2013	$	48,656

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Subsequent Event

9 Months Ended

Sep. 30, 2013

Subsequent Event

18. SUBSEQUENT EVENT

On October 22, 2013, the Company announced that its Board of Directors increased its regular quarterly cash dividend by $0.015, from $0.10 to $0.115 per share, and then declared a regular quarterly cash dividend of $0.115 per share on the Company’s common stock. The dividend will be paid on November 19, 2013, to stockholders of record on the close of business on November 5, 2013.

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Segment Reporting - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013 Segment Customer
Segment Reporting Information [Line Items]
Number of contracts or customers accounted for more than 10% of the Company's total revenues at the consolidated or reportable segment level	0
Number of operating segments	4
Accumulated impairment losses associated with goodwill	$ 0
Prior to October 2012
Segment Reporting Information [Line Items]
Number of operating segments	3
Geographical Segment
Segment Reporting Information [Line Items]
Number of operating segments	3

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Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2013

Assets and Liabilities Measured At Fair Value on Recurring Basis

The Company’s assets and liabilities measured at fair value on a recurring basis at September 30, 2013 and December 31, 2012, were as follows:

	Fair Value Measurement at September 30, 2013 Using
	Total			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
Interest rate swap derivative instruments – net liability position	$	(6,446	)	$	—	$	(6,446	)	$	—
Fuel hedge derivative instrument – net asset position	$	1,673		$	—	$	—		$	1,673
Restricted assets	$	34,157		$	34,157	$	—		$	—

	Fair Value Measurement at December 31, 2012 Using
	Total			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
Interest rate swap derivative instruments – net liability position	$	(11,163	)	$	—	$	(11,163	)	$	—
Fuel hedge derivative instrument – net asset position	$	1,187		$	—	$	—		$	1,187
Restricted assets	$	33,425		$	33,425	$	—		$	—

Change in Fair Value for Level 3 Derivatives

The following table summarizes the change in the fair value for Level 3 derivatives for the nine months ended September 30, 2013:

	Level 3 Derivatives
Balance as of December 31, 2012	$	1,187
Unrealized gains included in AOCL		486
Balance as of September 30, 2013	$	1,673

The following table summarizes the change in the fair value for Level 3 derivatives for the nine months ended September 30, 2012:

	Level 3 Derivatives
Balance as of December 31, 2011	$	3,506
Realized gains included in earnings		(3,327	)
Unrealized gains included in AOCL		2,455
Balance as of September 30, 2012	$	2,634

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Long-Term Debt (Parenthetical) (Detail)	9 Months Ended
	Sep. 30, 2013
Revolver Under Credit Facility
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum	1.47%	[1]
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum	4.25%	[1]
Term Loan Facility
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum	2.06%	[1]
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum	2.70%	[1]
6.22% Senior Notes due 2015
Debt Instrument [Line Items]
Interest Rate	6.22%
Maturity year	2015
3.30% Senior Notes due 2016
Debt Instrument [Line Items]
Interest Rate	3.30%
Maturity year	2016
4.00% Senior Notes due 2018
Debt Instrument [Line Items]
Interest Rate	4.00%
Maturity year	2018
5.25% Senior Notes due 2019
Debt Instrument [Line Items]
Interest Rate	5.25%
Maturity year	2019
4.64% Senior Notes due 2021
Debt Instrument [Line Items]
Interest Rate	4.64%
Maturity year	2021
Tax-exempt bonds
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum	0.10%	[1]
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum	0.35%	[1]
2.5% to 10.9% notes payable to sellers and other third parties
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum	2.50%	[1]
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum	10.90%	[1]

[1] Interest rates in the table above represent the range of interest rates incurred during the nine month period ended September 30, 2013.

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Reconciliation of Primary Measure of Segment Profitability to Income Before Income Tax Provision (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
EBITDA	$ 175,969	[1]	$ 134,434	[1]	$ 488,640	[1]	$ 370,565	[1]
Depreciation	(55,863)		(42,313)		(162,277)		(119,331)
Amortization of intangibles	(6,211)		(6,267)		(18,861)		(18,115)
Gain (loss) on disposal of assets	1,129		(244)		(1,993)		(715)
Loss (gain) on prior office leases	596				(9,902)
Gain from litigation settlement			3,537				3,537
Interest expense	(17,911)		(11,949)		(55,851)		(36,063)
Other income (expense), net	845		825		(119)		1,663
Income before income tax provision	98,554		78,023		239,637		201,541
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
EBITDA	175,781		136,426		491,319		380,388
Operating Segments | Western
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
EBITDA	67,773	[1]	61,119	[1]	188,736	[1]	173,810	[1]
Operating Segments | Central
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
EBITDA	48,845	[1]	47,072	[1]	137,600	[1]	122,688	[1]
Operating Segments | Eastern
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
EBITDA	28,038	[1]	26,113	[1]	82,947	[1]	77,879	[1]
Operating Segments | Exploration and Production
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
EBITDA	31,125	[1]	2,122	[1]	82,036	[1]	6,011	[1]
Corporate, Non-Segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
EBITDA	$ 188		$ (1,992)		$ (2,679)		$ (9,823)

[1] For those items included in the determination of EBITDA, the accounting policies of the segments are the same as those described in the Company's most recent Annual Report on Form 10-K.

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Derivative Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2013

Impact of Cash Flow Hedges on Results of Operations, Comprehensive Income and Accumulated Other Comprehensive Loss

The fair values of derivative instruments designated as cash flow hedges as of September 30, 2013, were as follows:

Derivatives Designated as Cash	Asset Derivatives			Liability Derivatives
Flow Hedges	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
Interest rate swaps				Accrued liabilities(a)	$	(3,940	)
				Other long-term liabilities		(2,506	)
Fuel hedge	Prepaid expenses and other current assets(b)	$	701
	Other assets, net		972
Total derivatives designated as cash flow hedges		$	1,673		$	(6,446	)

(a) Represents the estimated amount of the existing unrealized losses on interest rate swaps as of September 30, 2013 (based on the interest rate yield curve at that date), included in AOCL expected to be reclassified into pre-tax earnings within the next 12 months. The actual amounts reclassified into earnings are dependent on future movements in interest rates.

(b) Represents the estimated amount of the existing unrealized gains on the fuel hedge as of September 30, 2013 (based on the forward DOE diesel fuel index curve at that date), included in AOCL expected to be reclassified into pre-tax earnings within the next 12 months. The actual amounts reclassified into earnings are dependent on future movements in diesel fuel prices.

The fair values of derivative instruments designated as cash flow hedges as of December 31, 2012, were as follows:

Derivatives Designated as Cash	Asset Derivatives			Liability Derivatives
Flow Hedges	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
Interest rate swaps				Accrued liabilities	$	(5,374	)
				Other long-term liabilities		(5,789	)
Fuel hedge	Other assets, net	$	1,187
Total derivatives designated as cash flow hedges		$	1,187		$	(11,163	)

Fair Values of Derivative Instruments Designated as Cash Flow Hedges

The following table summarizes the impact of the Company’s cash flow hedges on the results of operations, comprehensive income and AOCL for the three and nine months ended September 30, 2013 and 2012:

Derivatives Designated as Cash Flow Hedges	Amount of Gain or (Loss) Recognized as AOCL on Derivatives, Net of Tax (Effective Portion)(a)						Statement of Income Classification	Amount of (Gain) or Loss Reclassified from AOCL into Earnings, Net of Tax  (Effective Portion) (b),(c)
	Three Months Ended September 30,							Three Months Ended September 30,
	2013			2012				2013		2012
Interest rate swaps	$	(809	)	$	(1,497	)	Interest expense	$	879	$	855
Fuel hedge		271			1,105		Cost of operations		—		(678	)
Total	$	(538	)	$	(392	)		$	879	$	177

Derivatives Designated as Cash Flow Hedges	Amount of Gain or (Loss) Recognized as AOCL on Derivatives, Net of Tax (Effective  Portion)(a)					Statement of Income Classification	Amount of (Gain) or Loss Reclassified from AOCL into Earnings, Net of Tax  (Effective Portion) (b),(c)
	Nine Months Ended September 30,						Nine Months Ended September 30,
	2013		2012				2013		2012
Interest rate swaps	$	323	$	(4,469	)	Interest expense	$	2,595	$	2,409
Fuel hedge		300		1,522		Cost of operations		—		(2,062	)
Total	$	623	$	(2,947	)		$	2,595	$	347

(a) In accordance with the derivatives and hedging guidance, the effective portions of the changes in fair values of interest rate swaps and the fuel hedge have been recorded in equity as a component of AOCL. As the critical terms of the interest rate swaps match the underlying debt being hedged, no ineffectiveness is recognized on these swaps and, therefore, all unrealized changes in fair value are recorded in AOCL. Because changes in the actual price of diesel fuel and changes in the DOE index price do not offset exactly each reporting period, the Company assesses whether the fuel hedge is highly effective using the cumulative dollar offset approach.

(b) Amounts reclassified from AOCL into earnings related to realized gains and losses on interest rate swaps are recognized when interest payments or receipts occur related to the swap contracts, which correspond to when interest payments are made on the Company’s hedged debt.

(c) Amounts reclassified from AOCL into earnings related to realized gains and losses on the fuel hedge are recognized when settlement payments or receipts occur related to the hedge contract, which correspond to when the underlying fuel is consumed.

Interest Rate Swap

Company's Derivative Instruments

At September 30, 2013, the Company’s derivative instruments included three interest rate swap agreements as follows:

Date Entered	Notional Amount		Fixed Interest Rate Paid*			Variable Interest Rate Received		Effective Date		Expiration Date
March 2009	$	175,000		2.85	%		1-month LIBOR		February 2011		February 2014
August 2011	$	150,000		0.80	%		1-month LIBOR		April 2012		January 2015
December 2011	$	175,000		1.60	%		1-month LIBOR		February 2014		February 2017

* plus applicable margin.

Fuel Hedge Agreements

Company's Derivative Instruments

At September 30, 2013, the Company’s derivative instruments included one fuel hedge agreement as follows:

Date Entered	Notional Amount (in gallons per month)		Diesel Rate Paid Fixed (per gallon)		Diesel Rate Received Variable	Effective Date	Expiration Date
June 2012		300,000	$	3.60	DOE Diesel Fuel Index*	January 2014	December 2015

* If the national U.S. on-highway average price for a gallon of diesel fuel (“average price”), as published by the Department of Energy (“DOE”), exceeds the contract price per gallon, the Company receives the difference between the average price and the contract price (multiplied by the notional number of gallons) from the counterparty. If the average price is less than the contract price per gallon, the Company pays the difference to the counterparty.

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Stockholders' Equity - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	1 Months Ended		3 Months Ended		9 Months Ended
	Oct. 31, 2012	Feb. 27, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Sale of Common Stock, shares		12,000,000
Sale of Common Stock, par value		$ 0.01	$ 0.01		$ 0.01		$ 0.01
Sale of Common Stock, Price Per Share		$ 30.83
Proceeds from sale of Common Stock						$ 369,584
Underwriting discounts and estimated transaction expenses payable						376
Weighted average grant date fair value per share					$ 34.06
Repurchase of common stock, maximum value					1,200,000
Repurchase of common stock , shares						619,447
Repurchase of common stock , value						18,597
Remaining value of common stock authorized under repurchase program					415,960
Cash dividend per common share, increase	$ 0.01
Cash dividend per share			$ 0.10	$ 0.09	$ 0.30	$ 0.27
Cash dividends on common stock					$ 37,005	$ 32,182
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash dividend per share	$ 0.09
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash dividend per share	$ 0.10

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Amounts Included in Accumulated Other Comprehensive Loss (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of December 31, 2012			$ (6,165)
Amounts reclassified into earnings, net of taxes			2,595	347
Changes in fair value			623	(2,947)
Balance as of September 30, 2013	(2,947)		(2,947)
Fuel Hedge
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of December 31, 2012			732
Amounts reclassified into earnings, net of taxes		(678)		(2,062)
Changes in fair value	271	1,105	300	1,522
Balance as of September 30, 2013	1,032		1,032
Interest Rate Swap
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of December 31, 2012			(6,897)
Amounts reclassified into earnings, net of taxes	879	855	2,595	2,409
Changes in fair value	(809)	(1,497)	323	(4,469)
Balance as of September 30, 2013	$ (3,979)		$ (3,979)

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Intangible Assets Exclusive of Goodwill (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	$ 377,061	$ 379,605
Intangible assets, exclusive of goodwill, Gross	630,704	633,248
Finite-lived intangible assets, accumulated amortization	(109,500)	(91,340)
Finite-lived intangible assets, net carrying amount	267,561	288,265
Intangible assets, net, exclusive of goodwill	521,204	541,908
Indefinite-lived intangible assets, gross carrying amount	253,643	253,643
Indefinite-lived intangible assets, accumulated amortization
Indefinite-lived intangible assets	253,643	253,643
Solid Waste Collection and Transportation Permits
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets, gross carrying amount	151,505	151,505
Indefinite-lived intangible assets, accumulated amortization
Indefinite-lived intangible assets	151,505	151,505
Material Recycling Facility Permits
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets, gross carrying amount	42,283	42,283
Indefinite-lived intangible assets, accumulated amortization
Indefinite-lived intangible assets	42,283	42,283
Exploration and Production Facility Permits
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets, gross carrying amount	59,855	59,855
Indefinite-lived intangible assets, accumulated amortization
Indefinite-lived intangible assets	59,855	59,855
Long-term Franchise Agreements and Contracts
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	195,878	198,779
Finite-lived intangible assets, accumulated amortization	(43,606)	(38,447)
Finite-lived intangible assets, net carrying amount	152,272	160,332
Customer Lists
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	139,789	139,354
Finite-lived intangible assets, accumulated amortization	(55,612)	(43,457)
Finite-lived intangible assets, net carrying amount	84,177	95,897
Other Intangibles
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	41,394	41,472
Finite-lived intangible assets, accumulated amortization	(10,282)	(9,436)
Finite-lived intangible assets, net carrying amount	$ 31,112	$ 32,036

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Subsequent Event - Additional Information (Detail) (Subsequent Event, USD $)	1 Months Ended
	Oct. 22, 2013
Subsequent Event [Line Items]
Cash dividend per share increased amount	$ 0.015
Cash dividend per share	$ 0.115
Dividend paid date	Nov. 19, 2013
Dividend record date	Nov. 05, 2013
Minimum
Subsequent Event [Line Items]
Cash dividend per share	$ 0.10
Maximum
Subsequent Event [Line Items]
Cash dividend per share	$ 0.115

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Commitments and Contingencies

9 Months Ended

Sep. 30, 2013

Commitments and Contingencies

17. COMMITMENTS AND CONTINGENCIES

In the normal course of its business and as a result of the extensive governmental regulation of the solid waste and E&P waste industries, the Company is subject to various judicial and administrative proceedings involving federal, state or local agencies. In these proceedings, an agency may seek to impose fines on the Company or to revoke or deny renewal of an operating permit held by the Company. From time to time, the Company may also be subject to actions brought by special interest or other groups, adjacent landowners or residents in connection with the permitting and licensing of landfills, transfer stations, and E&P waste treatment, recovery and disposal operations, or alleging environmental damage or violations of the permits and licenses pursuant to which the Company operates.

In addition, the Company is a party to various claims and suits pending for alleged damages to persons and property, alleged violations of certain laws and alleged liabilities arising out of matters occurring during the normal operation of the waste management business. Except as noted in the matters described below, as of September 30, 2013, there is no current proceeding or litigation involving the Company or its property that the Company believes could have a material adverse impact on its business, financial condition, results of operations or cash flows.

Chaparral, New Mexico Landfill Permit Litigation

The Company’s subsidiary, High Desert Solid Waste Facility, Inc. (formerly known as Rhino Solid Waste, Inc.) (“HDSWF”), owns undeveloped property in Chaparral, New Mexico, for which it sought a permit to operate a municipal solid waste landfill. The New Mexico Environment Department (the “Department”) approved the permit for the facility on January 30, 2002. Colonias Development Council (“CDC”), a nonprofit organization, appealed the Department’s decision to the courts of New Mexico, primarily on the grounds that the Department failed to consider the social impact of the landfill on the community of Chaparral, and failed to consider regional planning issues. On July 18, 2005, in Colonias Dev. Council v. Rhino Envtl. Servs., Inc. (In re Rhino Envtl. Servs.), 2005 NMSC 24, 117 P.3d 939, the New Mexico Supreme Court remanded the matter back to the Department to conduct a limited public hearing on certain evidence that CDC claimed was wrongfully excluded from consideration by the hearing officer, and to allow the Department to reconsider the evidence already proffered concerning the impact of the landfill on the surrounding community’s quality of life. In July 2007, the Department, CDC, the Company and Otero County signed a stipulation requesting a postponement of the limited public hearing to allow the Company time to explore a possible relocation of the landfill to a new site. Since 2007, the Department has issued several orders postponing the limited public hearing, and on October 17, 2012, it granted a request by the parties to hold the limited public hearing in abeyance until further notice.

In July 2009, HDSWF purchased approximately 325 acres of undeveloped land comprising a proposed new site from the State of New Mexico. HDSWF filed a formal landfill permit application for the new site with the Department on September 17, 2010. On September 12, 2011, the Department deemed the permit application complete and a public hearing on the matter had been tentatively scheduled for April 9, 2012 in Chaparral, New Mexico. On November 9, 2011, HDSWF filed a motion with the Department to hold in abeyance indefinitely the notice for public hearing and the permit hearing, and HDSWF agreed to provide the Department with at least 120 days’ prior notice of any desired, future permit hearing. The Department granted the motion. HDSWF requested the abeyance to defer capital expenditures related to permitting the new site until mid to late 2014, when HDSWF expects to have a better understanding of several current market conditions and regulatory factors that affect the timing and feasibility of the project. These conditions and factors include: the status of the Company’s Solid Waste Disposal and Operating Agreement for the collection and disposal of solid waste generated within the City of El Paso, effective April 28, 2004, which has a 10-year term; the status of El Paso Disposal, LP’s Solid Waste Franchise Agreement for the collection of solid waste generated within the City of El Paso, effective September 1, 2011, which has a 40-month term; whether the City of El Paso implements flow control in September 2014 directing waste collected within its boundaries to City-owned disposal facilities; and whether certain closed or non-operating disposal facilities in the El Paso market area are reopened and whether those facilities are operated by private or public entities.

At September 30, 2013, the Company had $11,778 of capitalized expenditures related to this landfill development project. Depending on the outcome of the market conditions and regulatory factors described above, the Company may decide in mid to late 2014 to abandon the project and expense the $11,778 of capitalized expenditures, less the recoverable value of the undeveloped properties and other amounts recovered, which would likely have a material adverse effect on the Company’s results of operations for that period. Alternatively, if the outcome of the market conditions and regulatory factors described above is such that the Company believes the market for disposal of solid waste generated in the City of El Paso will remain competitive, HDSWF may decide in mid to late 2014 to resume its permitting process for the new site. Under those circumstances, if the Department ultimately denies the landfill permit application for the new site, HDSWF intends to actively resume its efforts to enforce the previously issued landfill permit for the original site in Chaparral. If the Company is ultimately issued a permit to operate the landfill at the new site purchased in July 2009, the Company will be required to expense in a future period $10,324 of capitalized expenditures related to the original Chaparral property, less the recoverable value of that undeveloped property and other amounts recovered, which would likely have a material adverse effect on the Company’s results of operations for that period. If the Company instead is ultimately issued a permit to operate the landfill at the original Chaparral property, the Company will be required to expense in a future period $1,454 of capitalized expenditures related to the new site purchased in July 2009, less the recoverable value of that undeveloped property and other amounts recovered. If the Company is not ultimately issued a permit to operate the landfill at either one of the two sites, the Company will be required to expense in a future period the $11,778 of capitalized expenditures, less the recoverable value of the undeveloped properties and other amounts recovered, which would likely have a material adverse effect on the Company’s results of operations for that period.

Harper County, Kansas Landfill Permit Litigation

The Company opened a municipal solid waste landfill in Harper County, Kansas in January 2006, following the issuance by the Kansas Department of Health and Environment (“KDHE”) of a permit to operate the landfill. The landfill has operated continuously since that time. In 2005, landfill opponents (the “Plaintiffs”) filed a suit (Board of Comm’rs of Sumner County, Kansas, Tri-County Concerned Citizens and Dalton Holland v. Roderick Bremby, Sec’y of the Kansas Dep’t of Health and Env’t, et al.) in the District Court of Shawnee County, Kansas, seeking a judicial review of KDHE’s decision to issue the permit, alleging that a site analysis prepared for the Company and submitted to KDHE as part of the process leading to the issuance of the permit was deficient in several respects. The action sought to stay the effectiveness of the permit and to nullify it. The Company intervened in this lawsuit shortly after it was filed. In June 2012, the District Court denied the Plaintiffs’ demand for revocation of the permit, and affirmed KDHE’s decision that the issuance of the permit met all applicable regulatory requirements. The Plaintiffs filed an appeal with the Kansas Court of Appeals. On September 13, 2013, the Kansas Court of Appeals affirmed KDHE’s issuance of the landfill permit to the Company. On October 15, 2013, the Plaintiffs petitioned the Kansas Supreme Court to review the decision of the Court of Appeals, which review is discretionary. The Company believes that it will ultimately prevail in this matter, and the Company will continue to have the right to operate the landfill during the pendency of any further appeal. Only in the event that a final, materially adverse determination with respect to the permit is received would there likely be a material adverse effect on the Company’s reported results of operations in the future. If as a result of this litigation, after exhausting all appeals, the Company was unable to continue to operate the landfill, the Company estimates that it would be required to record a pre-tax impairment charge of approximately $18,700 to reduce the carrying value of the landfill to its estimated fair value. In addition, the Company estimates the current annual impact to its pre-tax earnings that would result if it was unable to continue to operate the landfill would be approximately $6,700 per year.

Solano County, California Measure E/Landfill Expansion Litigation

The Company and one of its subsidiaries, Potrero Hills Landfill, Inc. (“PHLF”), were named as real parties in interest in an amended complaint captioned Sustainability, Parks, Recycling and Wildlife Legal Defense Fund v. County of Solano, which was filed in the Superior Court of California, County of Solano, on July 9, 2009 (the original complaint was filed on June 12, 2009). This lawsuit seeks to compel Solano County to comply with Measure E, a ballot initiative and County ordinance passed in 1984 that the County has not enforced against PHLF since at least 1992. Measure E directs in part that Solano County shall not allow the importation into the County of any solid waste which originated or was collected outside the County in excess of 95,000 tons per year. PHLF accepts for disposal, beneficial reuse and recycling approximately 935,000 tons of solid waste annually, approximately 787,000 tons of which originate from sources outside of Solano County. The Sustainability, Parks, Recycling and Wildlife Legal Defense Fund (“SPRAWLDEF”) lawsuit also seeks to overturn Solano County’s approval of the use permit for the expansion of the Potrero Hills Landfill and the related Environmental Impact Report (“EIR”), arguing that both violate Measure E and that the EIR violates the California Environmental Quality Act (“CEQA”). Two similar actions seeking to enforce Measure E, captioned Northern California Recycling Association v. County of Solano and Sierra Club v. County of Solano, were filed in the same court on June 10, 2009, and August 10, 2009, respectively. The Northern California Recycling Association (“NCRA”) case does not name the Company or any of its subsidiaries as parties and does not contain any CEQA claims, but does seek to enforce Measure E and overturn the use permit for the expansion. The Sierra Club case names PHLF as a real party in interest, and seeks to overturn the use permit for the expansion of the landfill on Measure E grounds (but does not raise CEQA claims).

In December 2009, the Company and PHLF filed briefs vigorously opposing enforcement of Measure E on constitutional and other grounds. The Company’s position is supported by Solano County, a co-defendant in the Measure E litigation. It is also supported by the Attorney General of the State of California, the National Solid Wastes Management Association (“NSWMA”) and the California Refuse Recycling Council (“CRRC”), each of which filed supporting friend of court briefs or letters. In addition, numerous waste hauling companies in California, Oregon and Nevada intervened on the Company’s side in the state cases, subsequent to their participation in the federal action challenging Measure E discussed below.

On May 12, 2010, the Solano County Superior Court issued a written opinion addressing all three cases. The Court upheld Measure E in part by judicially rewriting the law, and then issued a writ of mandamus directing Solano County to enforce Measure E as rewritten. The Court decided that it could cure the law’s discrimination against out-of-county waste by revising Measure E to only limit the importation of waste into Solano County from other counties in California, but not from other states. In the same opinion, the Court rejected the requests from petitioners in the cases for a writ of administrative mandamus to overturn the use permit approved by Solano County in June 2009 for the expansion of PHLF’s landfill, thereby leaving the expansion permit in place.

In December 2010, the Court entered final judgments and writs of mandamus in the three cases, and Solano County, the Company, PHLF and the waste hauling company intervenors filed notices of appeal, which stayed the judgments and writs pending the outcome of the appeal. Petitioners Sierra Club and SPRAWLDEF cross-appealed the Court’s ruling denying their petitions for writs to overturn PHLF’s use permit for the expansion. Seventeen separate entities filed friend of court briefs on behalf of the Company and Solano County in September 2011, including the California Attorney General on behalf of the California Department of Resources Recycling and Recovery; the City and County of San Francisco; solid waste joint powers authorities serving the areas of Napa County, the City of Vallejo, the South Lake Tahoe Basin, Central Contra Costa County and the Salinas Valley; the California Association of Sanitation Agencies; sanitation districts serving Los Angeles County and Orange County; the NSWMA; the National Association of Manufacturers; the CRRC; the Los Angeles County Waste Management Association; the Solid Waste Association of Orange County; the Inland Empire Disposal Association; and the California Manufacturers and Technology Association. No friend of court briefs were filed on behalf of the petitioners. As explained below, on July 31, 2013, the Court of Appeal issued a ruling in this case in favor of the Company and Solano County.

As part of the final judgments, the Solano County Superior Court retained jurisdiction over any motions for attorneys’ fees under California’s Private Attorney General statute. Petitioners NCRA, SPRAWLDEF and Sierra Club each filed a bill of costs and a motion for attorney fees totaling $771. On May 31, 2011, the court issued a final order awarding petitioners $452 in attorneys’ fees, $411 of which relates to the SPRAWLDEF and Sierra Club cases in which the Company or PHLF is a named party. The court allocated 50% of the fee amount to PHLF, none of which the Company recorded as a liability at September 30, 2013. The Company and Solano County appealed this attorneys’ fees order in July 2011. As explained below, the Court of Appeal ruling on the merits of the case included a statement that the petitioners are no longer entitled to attorneys’ fees.

On February 9, 2012, the California Department of Resources Recycling and Recovery (“CalRecycle”) concurred in the solid waste facilities permit related to the Potrero Hills Landfill’s expansion, and the permit was approved and issued by the Solano County Department of Resource Management on February 14, 2012.

On September 25, 2012, Governor Jerry Brown signed into law Assembly Bill 845 (“AB 845”), an act of the California Legislature, effective January 1, 2013. AB 845 expressly prohibits counties from restricting or limiting the importation of solid waste into a privately owned facility in a county based on the waste’s place of origin. Because the Company believes that neither the Court of Appeal nor the trial court can grant petitioners any relief in light of AB 845, it filed a motion with the Court of Appeal on September 27, 2012. The motion sought to dismiss the cross appeals and reverse and remand the portions of the judgments rendered in petitioners’ favor regarding enforcement and implementation of Measure E by Solano County, including petitioners’ recovery of costs, for mootness in light of AB 845, with instructions to the trial court to dismiss the underlying writ petitions with prejudice. Sierra Club and SPRAWLDEF filed oppositions to the Company’s motion.

The Court of Appeal ruled on the Company’s motion on July 31, 2013. The Court ruled that AB 845 preempted Measure E and therefore precluded the writ of mandate enforcing Measure E as judicially rewritten. The Court reversed the judgment and writ of mandate, and directed the trial court to dismiss the petitions. The Court also dismissed on mootness grounds the cross-appeals by the petitioners of the trial court’s denial of their request for a writ of mandate vacating the use permit for the expansion. Regarding the trial court’s award of attorney fees to the petitioners, the Court of Appeal stated that petitioners were no longer successful parties under California law and “the award of attorney fees must necessarily be reversed.” Because the appeal of the attorney fees award is a separate case from the merits appeal, the Court’s ruling did not include an order regarding the fees award.

Sierra Club and SPRAWLDEF filed petitions for review with the California Supreme Court on September 9, 2013, asking the Supreme Court to hear an appeal of the Court of Appeal’s decision affirming the denial of a writ of mandamus to vacate the use permit for the expansion. The petitions did not seek review of the ruling that Measure E could no longer be enforced. A decision on the petitions for review is expected by the end of the year.

On August 19, 2013, before the petitions for review were filed, the Company filed a motion with the Court of Appeal in the attorney fees award appeal asking the Court to dismiss the Company’s appeal and summarily reverse the fees award, consistent with the Court of Appeal’s opinion in the merits case. The County filed a joinder in the motion on August 22, 2013. On September 10, 2013, the Court of Appeal issued an order deferring any ruling on the Company’s motion to summarily reverse the attorney fees award until the Supreme Court acts on the petitions for review.

At this point, the Company is not able to determine the likelihood of any outcome in this matter. If the Supreme Court of California grants the petitions for review, and if after full appellate briefing and argument the Supreme Court agrees with the petitioners that the Court of Appeal erred in finding moot the cross-appeals of the denial of the writ of mandate, the Supreme Court or Court of Appeal will then have to consider other bases on which to affirm the denial of the writ. These bases include the trial court ruling that the petitioners failed to raise their arguments regarding Measure E and the expansion permit when the permit was first considered in 2005, and therefore failed to exhaust administrative remedies. In the event that after further litigation the expansion permit is vacated and the County has to reconsider the permit, the County could reissue the expansion permit. The denial of an expansion permit would not preclude operation of Potrero Hills Landfill.

SPRAWLDEF additionally filed a lawsuit seeking a writ of mandate in Sacramento County Superior Court on August 20, 2009, captioned SPRAWLDEF v. California Integrated Waste Management Board (“CIWMB”), County of Solano, et al., challenging a CIWMB decision to dismiss SPRAWLDEF’s administrative appeal to the CIWMB seeking to set aside a 2006 solid waste facilities permit issued to Potrero Hills Landfill by the Solano County Local Enforcement Agency. The case names the Company and PHLF as real parties in interest. The appeal was dismissed by the CIWMB for failure to raise a substantial issue. The case was tried in Sacramento County Superior Court in October 2010, and the Superior Court rejected all of SPRAWLDEF’s claims and ordered the writ petition dismissed. SPRAWLDEF appealed the dismissal to the Third District Court of Appeal. The case has been fully briefed. The Company believes the case may be moot in light of the February 14, 2012 issuance of the new solid waste facilities permit for the landfill, which supersedes the 2006 permit at issue in the appeal. While the Company believes that the respondent agencies will prevail in this case, in the unlikely event that the 2006 permit was set aside, PHLF would continue to operate the Potrero Hills Landfill under the site’s new 2012 solid waste facilities permit.

On December 17, 2010, SPRAWLDEF and one its members filed a petition for writ of mandate in San Francisco Superior Court seeking to overturn the October 2010 approval of the marsh development permit issued by the San Francisco Bay Conservation and Development Commission (“BCDC”) for PHLF’s landfill expansion, alleging that the approval is contrary to the Suisun Marsh Protection Act. The petition, captioned SPRAWLDEF v. San Francisco Bay Conservation and Development Commission, names BCDC as a respondent and the Company as the real party in interest. The San Francisco Superior Court stayed the action and, on April 5, 2012, transferred the case to Solano County Superior Court, citing that court’s experience in the related CEQA case and judicial economy. On June 5, 2012, Solano County Superior Court assigned the case to Judge Beeman. On November 29, 2012, the court issued an order finding that the administrative record before BCDC did not contain sufficient evidence regarding net profits for the proposed project or the alternative to support the agency’s finding that the alternative was economically infeasible. The court therefore issued a writ of mandamus and final judgment on January 14, 2013 setting aside the BCDC permit and remanding it back to the agency for further consideration. Both the Company and BCDC filed notices of appeal, staying execution of the writ and judgment pending the appeal. Briefing for the appeal has been completed. The County of Solano, Suisun Resource Conservation District, California Refuse Recycling Council and Napa-Vallejo Waste Management Authority each filed amici briefs in this case on behalf of Appellants BCDC and the Company. At this point the Company is not able to determine the likelihood of any outcome in this matter.

On June 10, 2011, June Guidotti, a property owner adjacent to PHLF, and SPRAWLDEF and one of its members, each filed administrative petitions for review with the State Water Resources Control Board (“State Board”) seeking to overturn a May 11, 2011 Order No. 2166-(a) approving waste discharge requirements issued by the San Francisco Bay Regional Water Quality Control Board (“Regional Board”) for PHLF’s landfill expansion, alleging that the order is contrary to the State Board’s Title 27 regulations authorizing waste discharge requirements for landfills, and in the case of the SPRAWLDEF petition, further alleging that the Regional Board’s issuance of a Clean Water Act section 401 certification is not supported by an adequate alternatives analysis as required by the federal Clean Water Act. The Regional Board is preparing the administrative record of its decision to issue Order 2166-(a) to be filed with the State Board as well as its response to the petitions for review. It is anticipated that the Regional Board will vigorously defend its actions and seek dismissal of the petitions for review. A hearing date has not yet been set on either petition, and the State Board has held both the Guidotti and SPRAWLDEF petitions in abeyance at the petitioners’ requests. At this point the Company is not able to determine the likelihood of any outcome in this matter.

If as a result of any of the matters described above, after exhausting all appeals, PHLF’s use permit for the expansion or marsh development permit is permanently rescinded, the Company estimates that it would be required to recognize a pre-tax impairment charge of approximately $33,000 to reduce the carrying value of PHLF to its estimated fair value.

Colonie, New York Landfill Privatization Litigation

In August 2011, one of the Company’s wholly-owned subsidiaries, Capital Region Landfills, Inc. (“CRL”) and the Town of Colonie, New York (“Colonie”), entered into a Solid Waste Facility Operating Agreement (“Agreement”). CRL was selected to operate Colonie’s solid waste management operations, which include the Colonie Landfill, pursuant to a request for proposals initiated under New York State General Municipal Law (“GML”) section 120-w. CRL commenced solid waste management operations under the Agreement on September 19, 2011.

On September 29, 2011, seven individuals filed a petition in New York State Supreme Court (Albany County) against Colonie, its Town Board and its Supervisor (“Town Respondents”) to challenge the Agreement. The case is captioned, Conners, et al. v. Town of Colonie, et al., Index No. 006312/2011 (Sup. Ct., Albany Co.). On October 17, 2011, the petition was amended to add CRL and the Company as respondents. The petition alleged that the Agreement is the functional equivalent of a lease and therefore should have been subject to the permissive referendum requirements of New York State Town Law sections 64(2) and 90. The Town Respondents, CRL and the Company filed motions to dismiss on various procedural and substantive grounds.

On April 5, 2012, the Supreme Court dismissed the petition. On May 3, 2012, petitioners filed a notice of appeal with the Appellate Division of the New York State Supreme Court, Third Department. On July 3, 2013, the Appellate Division of the New York State Supreme Court, Third Department, affirmed the Supreme Court’s dismissal of the petition. The petitioners have not appealed the Third Department’s decision and the time period for doing so has elapsed. Thus, no further appeal may be pursued at this time.

Madera County, California Materials Recovery Facility Contract Litigation

The Company’s subsidiary, Madera Disposal Systems, Inc. (“MDSI”) was named in a complaint captioned County of Madera vs. Madera Disposal Systems, Inc., et al, which was filed in Madera County Superior Court (Case No. MCV 059402) on March 5, 2012, and subsequently transferred to Fresno County Superior Court. In its complaint, Madera County alleges that from 2007 through 2010, MDSI breached a contract with the County for the operation of a materials recovery facility by withholding profits from facility operations in excess of those authorized by the contract. The County further alleges that the breach gives the County the unilateral right to terminate all of its contracts with MDSI, including contracts for (1) the collection of residential and commercial waste in the unincorporated parts of the County, (2) operation of the materials recovery facility, (3) operation of the North Fork Transfer Station and (4) operation of the Fairmead Landfill. The County seeks monetary damages of $2,962 from MDSI, plus pre-judgment interest at 10% per annum.

MDSI had been under contract with the County to collect residential and commercial waste and operate the county-owned Fairmead Landfill continuously since at least 1981. In 1994, MDSI contracted with the County to construct and operate a materials recovery facility for the County on the premises of the Fairmead Landfill. At the time it entered into the materials recovery facility contract, MDSI entered into new contracts with the County for waste collection and landfill operation that were to run concurrently with the materials recovery facility contract. In 1998, MDSI and the County agreed to extend the terms of the materials recovery facility and other County contracts until November 10, 2012, with MDSI holding a unilateral option to extend all of the contracts for an additional five-year term.

In March 2011, the County issued a Notice of Default to MDSI under the materials recovery facility contract and gave MDSI 30 days to cure the default. MDSI provided information that it believed demonstrated that it was not in default under the contract and had not withheld profits that it was obligated to deliver to the County under the terms of the contract.

On February 7, 2012, the County issued a Notice of Termination to MDSI terminating all of its contracts effective November 1, 2012. The lawsuit followed on March 5, 2012. MDSI answered the complaint and asserted a claim against the County for wrongful termination of the contracts. On October 31, 2012, MDSI ceased providing services and vacated the County premises. The case is set for trial in Fresno in June 2014.

At this point, the Company is not able to determine the likelihood of any outcome in this matter. The Company disputes Madera County’s right to terminate the MDSI contracts effective November 1, 2012, and seeks damages for the profits lost as a result of the wrongful termination. The Company estimates that the current annual impact to its pre-tax earnings resulting from the termination of MDSI’s contracts with Madera County will be approximately $2,300 per year, not including any monetary damages and interest the Court could order MDSI to pay the County.

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Condensed Consolidated Statements of Equity (USD $) In Thousands, except Share data	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Noncontrolling Interests
Beginning Balances at Dec. 31, 2011	$ 1,399,687	$ 1,109	$ 408,721	$ (3,480)	$ 988,560	$ 4,777
Beginning Balances, shares at Dec. 31, 2011		110,907,782
Vesting of restricted stock units (in shares)		588,910
Vesting of restricted stock units		6	(6)
Tax withholdings related to net share settlements of restricted stock units	(6,039)	(2)	(6,037)
Tax withholdings related to net share settlements of restricted stock units, Shares		(189,200)
Equity-based compensation	14,036		14,036
Exercise of stock options and warrants	1,042	1	1,041
Exercise of stock options and warrants, shares		95,900
Issuance of common stock, net of issuance costs of $376 (in shares)		12,000,000
Issuance of common stock, net of issuance costs of $376	369,584	120	369,464
Excess tax benefit associated with equity-based compensation	3,415		3,415
Repurchase of common stock	(18,597)	(6)	(18,591)
Repurchase of common stock in shares	(619,447)	(619,447)
Cash dividends on common stock	(32,182)				(32,182)
Amounts reclassified into earnings, net of taxes	347			347
Changes in fair value of cash flow hedges, net of taxes	(2,947)			(2,947)
Distributions to noncontrolling interests	(94)					(94)
Net income	123,574				123,104	470
Ending Balances at Sep. 30, 2012	1,851,826	1,228	772,043	(6,080)	1,079,482	5,153
Ending Balances, Shares at Sep. 30, 2012		122,783,945
Beginning Balances at Dec. 31, 2012	1,883,130	1,230	779,904	(6,165)	1,103,188	4,973
Beginning Balances, shares at Dec. 31, 2012	123,019,494	123,019,494
Vesting of restricted stock units (in shares)		480,903
Vesting of restricted stock units		5	(5)
Tax withholdings related to net share settlements of restricted stock units	(5,421)	(2)	(5,419)
Tax withholdings related to net share settlements of restricted stock units, Shares		(151,769)
Equity-based compensation	11,268		11,268
Exercise of stock options and warrants	2,234	2	2,232
Exercise of stock options and warrants, shares		197,560
Excess tax benefit associated with equity-based compensation	3,539		3,539
Cash dividends on common stock	(37,005)				(37,005)
Amounts reclassified into earnings, net of taxes	2,595			2,595
Changes in fair value of cash flow hedges, net of taxes	623			623
Distributions to noncontrolling interests	(198)					(198)
Net income	146,588				146,229	359
Ending Balances at Sep. 30, 2013	$ 2,007,353	$ 1,235	$ 791,519	$ (2,947)	$ 1,212,412	$ 5,134
Ending Balances, Shares at Sep. 30, 2013	123,546,188	123,546,188

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Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities:
Net income	$ 146,588	$ 123,574
Adjustments to reconcile net income to net cash provided by operating activities:
Loss on disposal of assets	1,993	715
Depreciation	162,277	119,331
Amortization of intangibles	18,861	18,115
Deferred income taxes, net of acquisitions	24,411	18,451
Amortization of debt issuance costs	2,836	1,247
Equity-based compensation	11,268	14,036
Interest income on restricted assets	(295)	(491)
Interest accretion	3,677	2,798
Excess tax benefit associated with equity-based compensation	(3,539)	(3,415)
Loss on prior office leases	9,902
Payment of contingent consideration recorded in earnings	(5,059)
Net change in operating assets and liabilities, net of acquisitions	12,484	32,378
Net cash provided by operating activities	385,404	326,739
Cash flows from investing activities:
Payments for acquisitions, net of cash acquired	(2,031)	(223,256)
Proceeds from adjustment to acquisition consideration	18,000
Capital expenditures for property and equipment	(140,872)	(110,995)
Proceeds from disposal of assets	9,075	2,107
Increase in restricted assets, net of interest income	(81)	4,779
Other	(4,868)	(6,287)
Net cash used in investing activities	(120,777)	(333,652)
Cash flows from financing activities:
Proceeds from long-term debt	212,500	334,000
Principal payments on notes payable and long-term debt	(418,316)	(545,069)
Payment of contingent consideration recorded at acquisition date	(23,530)	(4,099)
Change in book overdraft	(374)	(3,383)
Proceeds from option and warrant exercises	2,234	1,042
Excess tax benefit associated with equity-based compensation	3,539	3,415
Payments for repurchase of common stock		(18,597)
Payments for cash dividends	(37,005)	(32,182)
Tax withholdings related to net share settlements of restricted stock units	(5,421)	(6,039)
Distributions to noncontrolling interests	(198)	(94)
Debt issuance costs	(1,987)	(776)
Proceeds from common stock offering, net		369,584
Net cash provided by (used in) financing activities	(268,558)	97,802
Net increase (decrease) in cash and equivalents	(3,931)	90,889
Cash and equivalents at beginning of period	23,212	12,643
Cash and equivalents at end of period	19,281	103,532
Non-cash financing activity:
Liabilities assumed and notes payable issued to sellers of businesses acquired	$ 486	$ 51,004

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Reclassification

9 Months Ended

Sep. 30, 2013

Reclassification

3. RECLASSIFICATION

Certain amounts reported in the Company’s prior year financial statements have been reclassified to conform with the 2013 presentation.

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Basis of Presentation and Summary

9 Months Ended

Sep. 30, 2013

Basis of Presentation and Summary

1. BASIS OF PRESENTATION AND SUMMARY

The accompanying condensed consolidated financial statements relate to Waste Connections, Inc. and its subsidiaries (“WCI” or the “Company”) for the three and nine month periods ended September 30, 2013 and 2012. In the opinion of management, the accompanying balance sheets and related interim statements of net income, comprehensive income, cash flows and equity include all adjustments, consisting only of normal recurring items, necessary for their fair statement in conformity with U.S. generally accepted accounting principles (“GAAP”). Preparing financial statements requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenue and expenses. Examples include accounting for landfills, self-insurance accruals, income taxes, allocation of acquisition purchase price and asset impairments. An additional area that involves estimation is when the Company estimates the amount of potential exposure it may have with respect to litigation, claims and assessments in accordance with the accounting guidance on contingencies. Actual results could differ materially from the estimates and assumptions that the Company uses in the preparation of its condensed consolidated financial statements.

Interim results are not necessarily indicative of results for a full year. These interim financial statements should be read in conjunction with the financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2012.

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Long-Term Debt - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013		Dec. 31, 2012
Debt Instrument [Line Items]
Long-term Debt	$ 2,033,120		$ 2,238,935
Funded debt to consolidated EBIDTA ratio	3.50
Ratio of consolidated EBIT to consolidated interest expense	2.75
Second Amended And Restated Credit Agreement
Debt Instrument [Line Items]
Maturity date	May 04, 2018
Credit Facility	1,200,000
Maximum amount of increase in Commitments under the revolving credit facility	1,500,000
Second Amended And Restated Credit Agreement | LIBOR | Minimum
Debt Instrument [Line Items]
Margin rate on loans	1.125%
Second Amended And Restated Credit Agreement | LIBOR | Maximum
Debt Instrument [Line Items]
Margin rate on loans	1.75%
Second Amended And Restated Credit Agreement | Base Rate Loans | Minimum
Debt Instrument [Line Items]
Margin rate on loans	0.125%
Second Amended And Restated Credit Agreement | Base Rate Loans | Maximum
Debt Instrument [Line Items]
Margin rate on loans	0.75%
Second Amended And Restated Credit Agreement | Sub Limit Swing Line Loans
Debt Instrument [Line Items]
Credit Facility	25,000
Term Loan Facility
Debt Instrument [Line Items]
Long-term Debt	720,000	[1]	800,000	[1]
Term Loan Facility | LIBOR | Minimum
Debt Instrument [Line Items]
Margin rate on loans	1.375%
Term Loan Facility | LIBOR | Maximum
Debt Instrument [Line Items]
Margin rate on loans	2.50%
Term Loan Facility | Base Rate Loans | Minimum
Debt Instrument [Line Items]
Margin rate on loans	0.375%
Term Loan Facility | Base Rate Loans | Maximum
Debt Instrument [Line Items]
Margin rate on loans	1.50%
Term Loan Facility | Amended Agreement | LIBOR | Minimum
Debt Instrument [Line Items]
Margin rate on loans	1.375%
Term Loan Facility | Amended Agreement | LIBOR | Maximum
Debt Instrument [Line Items]
Margin rate on loans	2.375%
Term Loan Facility | Amended Agreement | Base Rate Loans | Minimum
Debt Instrument [Line Items]
Margin rate on loans	0.375%
Term Loan Facility | Amended Agreement | Base Rate Loans | Maximum
Debt Instrument [Line Items]
Margin rate on loans	1.375%
Previous Credit Facility
Debt Instrument [Line Items]
Long-term Debt	680,000
Revolving credit facility maturing	2016-07
Master Note Purchase Agreement
Debt Instrument [Line Items]
Increase in principal amount of notes issuable	500,000
Debt instrument outstanding amount	600,000
Debt Instrument additional notes available to be sold	650,000
Master Note Purchase Agreement | Old Agreement
Debt Instrument [Line Items]
Aggregate principal amount of notes issuable	750,000
Master Note Purchase Agreement | New Agreement
Debt Instrument [Line Items]
Aggregate principal amount of notes issuable	$ 1,250,000

[1] Interest rates in the table above represent the range of interest rates incurred during the nine month period ended September 30, 2013.

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Long-Term Debt (Tables)

9 Months Ended

Sep. 30, 2013

Long-Term Debt

Long-term debt consists of the following:

	September 30, 2013			December 31, 2012
Revolver under credit facility, bearing interest ranging from 1.47% to 4.25%*	$	663,500		$	787,000
Term loan facility, bearing interest ranging from 2.06% to 2.70%*		720,000			800,000
2015 Notes, bearing interest at 6.22%		175,000			175,000
2016 Notes, bearing interest at 3.30%		100,000			100,000
2018 Notes, bearing interest at 4.00%		50,000			50,000
2019 Notes, bearing interest at 5.25%		175,000			175,000
2021 Notes, bearing interest at 4.64%		100,000			100,000
Tax-exempt bonds, bearing interest ranging from 0.10% to 0.35%*		35,150			35,655
Notes payable to sellers and other third parties, bearing interest at 2.5% to 10.9%*		14,470			16,280
		2,033,120			2,238,935
Less – current portion		(7,456	)		(33,968	)
	$	2,025,664		$	2,204,967

* Interest rates in the table above represent the range of interest rates incurred during the nine month period ended September 30, 2013.

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Fair Value of Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2013

Carrying Values and Fair Values of Company's Debt Instruments

The carrying values and fair values of the Company’s debt instruments where the carrying values do not approximate their fair values as of September 30, 2013 and December 31, 2012, are as follows:

	Carrying Value at				Fair Value* at
	September 30, 2013		December 31, 2012		September 30, 2013		December 31, 2012
6.22% Senior Notes due 2015	$	175,000	$	175,000	$	188,888	$	193,949
3.30% Senior Notes due 2016	$	100,000	$	100,000	$	102,274	$	103,068
4.00% Senior Notes due 2018	$	50,000	$	50,000	$	51,371	$	52,476
5.25% Senior Notes due 2019	$	175,000	$	175,000	$	188,055	$	195,584
4.64% Senior Notes due 2021	$	100,000	$	100,000	$	102,541	$	107,418

* Senior Notes are classified as Level 2 within the fair value hierarchy. Fair value is based on quotes of bonds with similar ratings in similar industries.

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Landfill Accounting - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended		12 Months Ended
	Sep. 30, 2013 Landfill	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2013 Scenario, Forecast
Debt Instrument [Line Items]
Number of municipal solid waste landfills owned and operated by company	42
Number of owned landfills that only accept exploration and production waste	5
Number of owned landfills that only accept construction and demolition, industrial and other non-putrescible waste	7
Number of landfills owned and operated by company	43
Number of landfills operated, not owned, under life of site operating agreements	6
Number of landfills operated under limited-term operating agreements	5
Net Book Value Landfill Site Costs	$ 1,626,169
Number of life-of-site landfills for which the Company is responsible for final capping, closure and post-closure maintenance obligations	5
Average remaining landfill life based on permitted capacity and projected annual disposal volumes	34 years
Number of owned landfills the company is seeking to expand	8
Number of landfills operated under life-of-site operating agreements that the company is seeking to expand	2
Average remaining landfill life based on permitted capacity, projected annual disposal volumes and probable expansion capacity	43 years
Life of Company's owned landfills and landfills operated under life of site operating agreements min range	6 years
Life of Company's owned landfills and landfills operated under life of site operating agreements max range	201 years
Landfill depletion expense	60,142	35,219
Average rate per ton consumed related to landfill depletion at owned landfills and landfills operated under life of site agreements	4.21	3.15
Discount rate for purposes of computing layers for final capping, closure and post-closure obligations			5.75%	5.75%
Inflation rate for purposes of computing layers for final capping, closure and post-closure obligations			2.50%	2.50%
Accretion expense associated with landfill obligations	2,077	1,870
Average rate per ton consumed related to final capping, closure and post-closure landfill accretion expense	0.15	0.17
Restricted asset balance for purposes of securing our performance of future final capping, closure and post-closure obligations	$ 32,816

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Impact of Cash Flow Hedges on Results of Operations, Comprehensive Income and Accumulated Other Comprehensive Loss (Detail) (Cash Flow Hedging, USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized as AOCL on Derivatives, Net of Tax (Effective Portion)	$ (538)	[1]	$ (392)	[1]	$ 623	[1]	$ (2,947)	[1]
Amount of (Gain) or Loss Reclassified from AOCL into Earnings, Net of Tax (Effective portion)	879	[2],[3]	177	[2],[3]	2,595	[2],[3]	347	[2],[3]
Interest Expense
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Gain) or Loss Reclassified from AOCL into Earnings, Net of Tax (Effective portion)	879	[2],[3]	855	[2],[3]	2,595	[2],[3]	2,409	[2],[3]
Cost Of Operations
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Gain) or Loss Reclassified from AOCL into Earnings, Net of Tax (Effective portion)			(678)	[2],[3]			(2,062)	[2],[3]
Interest Rate Swap
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized as AOCL on Derivatives, Net of Tax (Effective Portion)	(809)	[1]	(1,497)	[1]	323	[1]	(4,469)	[1]
Fuel Hedge
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized as AOCL on Derivatives, Net of Tax (Effective Portion)	$ 271	[1]	$ 1,105	[1]	$ 300	[1]	$ 1,522	[1]

[1] In accordance with the derivatives and hedging guidance, the effective portions of the changes in fair values of interest rate swaps and the fuel hedge have been recorded in equity as a component of AOCL. As the critical terms of the interest rate swaps match the underlying debt being hedged, no ineffectiveness is recognized on these swaps and, therefore, all unrealized changes in fair value are recorded in AOCL. Because changes in the actual price of diesel fuel and changes in the DOE index price do not offset exactly each reporting period, the Company assesses whether the fuel hedge is highly effective using the cumulative dollar offset approach.

[2] Amounts reclassified from AOCL into earnings related to realized gains and losses on interest rate swaps are recognized when interest payments or receipts occur related to the swap contracts, which correspond to when interest payments are made on the Company's hedged debt.

[3] Amounts reclassified from AOCL into earnings related to realized gains and losses on the fuel hedge are recognized when settlement payments or receipts occur related to the hedge contract, which correspond to when the underlying fuel is consumed.

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Total Reported Revenues by Service Line (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Revenue from External Customer [Line Items]
Revenues	$ 503,646		$ 425,654		$ 1,442,918		$ 1,212,815
Operating Segments
Revenue from External Customer [Line Items]
Revenues	569,350		484,599		1,632,229		1,386,995
Operating Segments | Solid Waste Collection
Revenue from External Customer [Line Items]
Revenues	312,872		304,166		912,488		880,920
Operating Segments | Solid Waste Disposal and Transfer
Revenue from External Customer [Line Items]
Revenues	158,142		142,293		434,513		390,576
Operating Segments | E&P Waste Treatment, Disposal and Recovery
Revenue from External Customer [Line Items]
Revenues	68,605		5,824		194,720		15,458
Operating Segments | Solid Waste Recycling
Revenue from External Customer [Line Items]
Revenues	18,402		18,712		55,806		61,809
Operating Segments | Intermodal and Other
Revenue from External Customer [Line Items]
Revenues	11,329		13,604		34,702		38,232
Intersegment Eliminations
Revenue from External Customer [Line Items]
Revenues	$ (65,704)	[1]	$ (58,945)	[1]	$ (189,311)	[1]	$ (174,180)	[1]

[1] Intercompany revenues reflect each segment's total intercompany sales, including intercompany sales within a segment and between segments. Transactions within and between segments are generally made on a basis intended to reflect the market value of the service.

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Estimated Future Amortization Expense of Amortizable Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013
Finite-Lived Intangible Assets [Line Items]
For the year ending December 31, 2013	$ 25,061
For the year ending December 31, 2014	24,410
For the year ending December 31, 2015	23,759
For the year ending December 31, 2016	19,807
For the year ending December 31, 2017	$ 17,835

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Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Allowance for doubtful accounts	$ 6,458	$ 6,548
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	7,500,000	7,500,000
Preferred stock, shares issued
Preferred stock, shares outstanding
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	250,000,000	250,000,000
Common stock, shares issued	123,546,188	123,019,494
Common stock, shares outstanding	123,546,188	123,019,494

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Acquisitions

9 Months Ended

Sep. 30, 2013

Acquisitions

6. ACQUISITIONS

The Company acquired six individually immaterial non-hazardous solid waste collection businesses during the nine months ended September 30, 2013. The Company acquired Alaska Pacific Environmental Services Anchorage, LLC and Alaska Green Waste Solutions, LLC (together, “Alaska Waste”), SKB Environmental, Inc. (“SKB”) and an additional five non-hazardous solid waste collection, transfer and disposal businesses during the nine months ended September 30, 2012.

Pursuant to the SKB stock purchase agreement, the Company was required to remit additional consideration to the former shareholders of SKB if the acquired operations exceeded earnings targets specified in the stock purchase agreement over a one-year earn out period ending June 30, 2013. The Company computed the fair value of the contingent consideration at the purchase date to be $20,711, based upon probability assessments of the expected future cash flows over the one-year period in which the obligation was expected to be settled. Based upon the actual earnings of SKB over the one-year earn out period, the final additional consideration was $25,768, which the Company paid in July 2013. The difference between the final contingent consideration paid and the fair value of the contingent consideration at the purchase date was charged to expense in Other income (expense), net in the Company’s Condensed Consolidated Statements of Net Income.

The acquisitions completed during the nine months ended September 30, 2013 and 2012, were not material to the Company’s results of operations, either individually or in the aggregate. As a result, pro forma financial information has not been provided. The results of operations of the acquired businesses have been included in the Company’s condensed consolidated financial statements from their respective acquisition dates. The Company expects these acquired businesses to contribute towards the achievement of the Company’s strategy to expand through acquisitions.

Cash consideration for the acquisition of the business of R360 Environmental Solutions, Inc. (“R360”) in October 2012 included payment for the estimated net working capital of $18,906, as defined in the acquisition agreement, which was subject to final adjustment subsequent to the close of the acquisition. In March 2013, Waste Connections received $18,000 from the former owners of R360 due to the final adjustment to the net working capital that was estimated at the closing date.

During the nine months ended September 30, 2013 and 2012, the Company incurred $974 and $3,610, respectively, of acquisition-related costs. These expenses are included in Selling, general and administrative expenses in the Company’s Condensed Consolidated Statements of Net Income.

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Condensed Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net income	$ 60,913	$ 49,620	$ 146,588	$ 123,574
Other comprehensive income (loss), before tax:
Other comprehensive income (loss) before tax	552	(346)	5,203	(4,194)
Income tax (expense) benefit related to items of other comprehensive income	(211)	131	(1,985)	1,594
Other comprehensive income (loss), net of tax	341	(215)	3,218	(2,600)
Comprehensive income	61,254	49,405	149,806	120,974
Less: Comprehensive income attributable to noncontrolling interests	(207)	(235)	(359)	(470)
Comprehensive income attributable to Waste Connections	61,047	49,170	149,447	120,504
Interest Rate Swap
Other comprehensive income (loss), before tax:
Amounts reclassified, gross	1,424	1,380	4,203	3,886
Changes in fair value, gross	(1,310)	(2,415)	514	(7,208)
Fuel Hedge
Other comprehensive income (loss), before tax:
Amounts reclassified, gross		(1,093)		(3,327)
Changes in fair value, gross	$ 438	$ 1,782	$ 486	$ 2,455

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Net Income Per Share Information - Additional Information (Detail) (Stock Options and Warrants)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Stock Options and Warrants
Computation Of Earnings Per Share Line Items
Antidilutive securities excluded from computation of earnings per share	493	78,545	1,533	72,324

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Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current assets:
Cash and equivalents	$ 19,281	$ 23,212
Accounts receivable, net of allowance for doubtful accounts of $6,458 and $6,548 at September 30, 2013 and December 31, 2012, respectively	238,842	235,762
Deferred income taxes	37,952	45,798
Prepaid expenses and other current assets	33,405	57,714
Total current assets	329,480	362,486
Property and equipment, net	2,424,716	2,457,606
Goodwill	1,637,541	1,636,557
Intangible assets, net	521,204	541,908
Restricted assets	35,265	34,889
Other assets, net	46,441	42,580
Total Assets	4,994,647	5,076,026
Current liabilities:
Accounts payable	115,404	130,260
Book overdraft	12,192	12,567
Accrued liabilities	134,951	121,829
Deferred revenue	68,644	69,930
Current portion of long-term debt and notes payable	7,456	33,968
Total current liabilities	369,369	417,572
Long-term debt and notes payable	2,025,664	2,204,967
Other long-term liabilities	83,784	75,129
Deferred income taxes	483,433	464,882
Total liabilities	2,987,294	3,192,896
Commitments and contingencies (Note 17)
Equity:
Preferred stock: $0.01 par value per share; 7,500,000 shares authorized; none issued and outstanding
Common stock: $0.01 par value per share; 250,000,000 shares authorized; 123,546,188 and 123,019,494 shares issued and outstanding at September 30, 2013 and December 31, 2012, respectively	1,235	1,230
Additional paid-in capital	791,519	779,904
Accumulated other comprehensive loss	(2,947)	(6,165)
Retained earnings	1,212,412	1,103,188
Total Waste Connections' equity	2,002,219	1,878,157
Noncontrolling interest in subsidiaries	5,134	4,973
Total equity	2,007,353	1,883,130
Total Liabilities and Stockholders' Equity	4,994,647	5,076,026
Other Current Liabilities
Current liabilities:
Contingent consideration	30,722	49,018
Other Long-term Liabilities
Current liabilities:
Contingent consideration	$ 25,044	$ 30,346

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Derivative Financial Instruments - Additional Information (Detail)	Sep. 30, 2013 Agreement
Derivative [Line Items]
Number of interest rate swap agreements	3
Number of fuel hedge agreements	1

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Intangible Assets, Net (Tables)

9 Months Ended

Sep. 30, 2013

Intangible Assets Exclusive of Goodwill

Intangible assets, exclusive of goodwill, consisted of the following at September 30, 2013:

	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Finite-lived intangible assets:
Long-term franchise agreements and contracts	$	195,878	$	(43,606	)	$	152,272
Customer lists		139,789		(55,612	)		84,177
Other		41,394		(10,282	)		31,112
		377,061		(109,500	)		267,561
Indefinite-lived intangible assets:
Solid waste collection and transportation permits		151,505		—			151,505
Material recycling facility permits		42,283		—			42,283
E&P facility permits		59,855		—			59,855
		253,643		—			253,643
Intangible assets, exclusive of goodwill	$	630,704	$	(109,500	)	$	521,204

Intangible assets, exclusive of goodwill, consisted of the following at December 31, 2012:

	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Finite-lived intangible assets:
Long-term franchise agreements and contracts	$	198,779	$	(38,447	)	$	160,332
Customer lists		139,354		(43,457	)		95,897
Other		41,472		(9,436	)		32,036
		379,605		(91,340	)		288,265
Indefinite-lived intangible assets:
Solid waste collection and transportation permits		151,505		—			151,505
Material recycling facility permits		42,283		—			42,283
E&P facility permits		59,855		—			59,855
		253,643		—			253,643
Intangible assets, exclusive of goodwill	$	633,248	$	(91,340	)	$	541,908

Estimated Future Amortization Expense of Amortizable Intangible Assets

Estimated future amortization expense for the next five years of finite-lived intangible assets is as follows:

For the year ending December 31, 2013	$	25,061
For the year ending December 31, 2014	$	24,410
For the year ending December 31, 2015	$	23,759
For the year ending December 31, 2016	$	19,807
For the year ending December 31, 2017	$	17,835

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Office Relocations

9 Months Ended

Sep. 30, 2013

Office Relocations

15. OFFICE RELOCATIONS

In December 2011, the Company commenced a relocation of its corporate headquarters from Folsom, California to The Woodlands, Texas, which was substantially completed in 2013. Costs related to personnel and office relocation expenses are recorded in Selling, general and administrative expenses in the Condensed Consolidated Statements of Net Income. In addition, the Company incurred a loss on its prior office leases of $9,902 during the nine months ended September 30, 2013 due to the cessation of use of its former corporate headquarters in Folsom, California and its E&P segment’s former regional offices in Houston, Texas. In October 2013, the Company remitted a payment to terminate the remaining lease obligation of its former headquarters in Folsom, California. These costs are recorded in Loss on prior office leases in the Condensed Consolidated Statements of Net Income.

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Intangible Assets, Net - Additional Information (Detail) (Customer Lists)	9 Months Ended
	Sep. 30, 2013
Customer Lists
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period of acquired customer lists	6 years 8 months 24 days

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Fair Values of Derivative Instruments Designated as Cash Flow Hedges (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013		Dec. 31, 2012
Derivatives, Fair Value [Line Items]
Derivatives Designated as cash flow Hedges, Asset derivatives	$ 1,673		$ 1,187
Derivatives Designated as cash flow Hedges, Liability derivatives	(6,446)		(11,163)
Interest Rate Swap | Accrued Liabilities
Derivatives, Fair Value [Line Items]
Derivatives Designated as cash flow Hedges, Liability derivatives	(3,940)	[1]	(5,374)
Interest Rate Swap | Other Long-term Liabilities
Derivatives, Fair Value [Line Items]
Derivatives Designated as cash flow Hedges, Liability derivatives	(2,506)		(5,789)
Fuel Hedge | Prepaid Expenses and Other Current Assets
Derivatives, Fair Value [Line Items]
Derivatives Designated as cash flow Hedges, Asset derivatives	701	[2]
Fuel Hedge | Other Assets
Derivatives, Fair Value [Line Items]
Derivatives Designated as cash flow Hedges, Asset derivatives	$ 972		$ 1,187

[1] Represents the estimated amount of the existing unrealized losses on interest rate swaps as of September 30, 2013 (based on the interest rate yield curve at that date), included in AOCL expected to be reclassified into pre-tax earnings within the next 12 months. The actual amounts reclassified into earnings are dependent on future movements in interest rates.

[2] Represents the estimated amount of the existing unrealized gains on the fuel hedge as of September 30, 2013 (based on the forward DOE diesel fuel index curve at that date), included in AOCL expected to be reclassified into pre-tax earnings within the next 12 months. The actual amounts reclassified into earnings are dependent on future movements in diesel fuel prices.

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Summary of Activity Related to Restricted Stock Units (Detail)	9 Months Ended
	Sep. 30, 2013
Unvested Shares
Outstanding at December 31, 2012	1,317,798
Granted	574,017
Forfeited	(41,959)
Vested and Issued	(480,903)
Vested and Unissued	(61,518)
Outstanding at September 30, 2013	1,307,435

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Long-Term Debt (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013		Dec. 31, 2012
Debt Instrument [Line Items]
Long-term Debt	$ 2,033,120		$ 2,238,935
Less - current portion	(7,456)		(33,968)
Long-term debt and notes payable	2,025,664		2,204,967
Revolver Under Credit Facility
Debt Instrument [Line Items]
Long-term Debt	663,500	[1]	787,000	[1]
Term Loan Facility
Debt Instrument [Line Items]
Long-term Debt	720,000	[1]	800,000	[1]
6.22% Senior Notes due 2015
Debt Instrument [Line Items]
Long-term Debt	175,000		175,000
3.30% Senior Notes due 2016
Debt Instrument [Line Items]
Long-term Debt	100,000		100,000
4.00% Senior Notes due 2018
Debt Instrument [Line Items]
Long-term Debt	50,000		50,000
5.25% Senior Notes due 2019
Debt Instrument [Line Items]
Long-term Debt	175,000		175,000
4.64% Senior Notes due 2021
Debt Instrument [Line Items]
Long-term Debt	100,000		100,000
Tax-exempt bonds
Debt Instrument [Line Items]
Long-term Debt	35,150	[1]	35,655	[1]
2.5% to 10.9% notes payable to sellers and other third parties
Debt Instrument [Line Items]
Long-term Debt	$ 14,470	[1]	$ 16,280	[1]

[1] Interest rates in the table above represent the range of interest rates incurred during the nine month period ended September 30, 2013.

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Other Comprehensive Income (Loss) (Tables)

9 Months Ended

Sep. 30, 2013

Components of Other Comprehensive Income (Loss)

The components of other comprehensive income (loss) and related tax effects for the three and nine month periods ended September 30, 2013 and 2012, are as follows:

	Three months ended September 30, 2013
	Gross			Tax effect			Net of tax
Interest rate swap amounts reclassified into interest expense	$	1,424		$	(545	)	$	879
Changes in fair value of interest rate swaps		(1,310	)		501			(809	)
Changes in fair value of fuel hedge		438			(167	)		271
	$	552		$	(211	)	$	341

	Three months ended September 30, 2012
	Gross			Tax effect			Net of tax
Interest rate swap amounts reclassified into interest expense	$	1,380		$	(525	)	$	855
Fuel hedge amounts reclassified into cost of operations		(1,093	)		415			(678	)
Changes in fair value of interest rate swaps		(2,415	)		918			(1,497	)
Changes in fair value of fuel hedge		1,782			(677	)		1,105
	$	(346	)	$	131		$	(215	)

	Nine months ended September 30, 2013
	Gross		Tax effect			Net of tax
Interest rate swap amounts reclassified into interest expense	$	4,203	$	(1,608	)	$	2,595
Changes in fair value of interest rate swaps		514		(191	)		323
Changes in fair value of fuel hedge		486		(186	)		300
	$	5,203	$	(1,985	)	$	3,218

	Nine months ended September 30, 2012
	Gross			Tax effect			Net of tax
Interest rate swap amounts reclassified into interest expense	$	3,886		$	(1,477	)	$	2,409
Fuel hedge amounts reclassified into cost of operations		(3,327	)		1,265			(2,062	)
Changes in fair value of interest rate swaps		(7,208	)		2,739			(4,469	)
Changes in fair value of fuel hedge		2,455			(933	)		1,522
	$	(4,194	)	$	1,594		$	(2,600	)

Amounts Included In Accumulated Other Comprehensive Loss

A rollforward of the amounts included in AOCL, net of taxes, is as follows:

	Fuel Hedge		Interest Rate Swaps			Accumulated Other Comprehensive Loss
Balance at December 31, 2012	$	732	$	(6,897	)	$	(6,165	)
Amounts reclassified into earnings		—		2,595			2,595
Changes in fair value		300		323			623
Balance at September 30, 2013	$	1,032	$	(3,979	)	$	(2,947	)

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Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2013

Summary of Activity Related to Restricted Stock Units

A summary of activity related to restricted stock units under the Third Amended and Restated 2004 Equity Incentive Plan during the nine month period ended September 30, 2013, is presented below:

	Unvested Shares
Outstanding at December 31, 2012		1,317,798
Granted		574,017
Forfeited		(41,959	)
Vested and Issued		(480,903	)
Vested and Unissued		(61,518	)
Outstanding at September 30, 2013		1,307,435

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Long-Term Debt

9 Months Ended

Sep. 30, 2013

Long-Term Debt

5. LONG-TERM DEBT

Long-term debt consists of the following:

	September 30, 2013			December 31, 2012
Revolver under credit facility, bearing interest ranging from 1.47% to 4.25%*	$	663,500		$	787,000
Term loan facility, bearing interest ranging from 2.06% to 2.70%*		720,000			800,000
2015 Notes, bearing interest at 6.22%		175,000			175,000
2016 Notes, bearing interest at 3.30%		100,000			100,000
2018 Notes, bearing interest at 4.00%		50,000			50,000
2019 Notes, bearing interest at 5.25%		175,000			175,000
2021 Notes, bearing interest at 4.64%		100,000			100,000
Tax-exempt bonds, bearing interest ranging from 0.10% to 0.35%*		35,150			35,655
Notes payable to sellers and other third parties, bearing interest at 2.5% to 10.9%*		14,470			16,280
		2,033,120			2,238,935
Less – current portion		(7,456	)		(33,968	)
	$	2,025,664		$	2,204,967

* Interest rates in the table above represent the range of interest rates incurred during the nine month period ended September 30, 2013.

Amendment to Master Note Purchase Agreement

On August 9, 2013, the Company and certain of its subsidiaries entered into Amendment No. 4 to the Master Note Purchase Agreement, dated July 15, 2008, as amended, increasing the aggregate principal amount of notes issuable under the Master Note Purchase Agreement from $750,000 to $1,250,000, representing a $500,000 increase. The Amendment also facilitates the future issuance of floating rate notes.

The Company currently has $600,000 of Notes outstanding under the Master Note Purchase Agreement. With the execution of the Amendment, the Company will be able to sell up to $650,000 of additional Notes under and subject to the terms of the Master Note Purchase Agreement. No existing or potential note holder has any obligation to purchase additional notes under the Master Note Purchase Agreement.

Amendment and Restatement of Credit Facility

On May 6, 2013, the Company and certain of its subsidiaries entered into a Second Amended and Restated Credit Agreement (the “credit agreement”) with Bank of America, N.A., as Administrative Agent and the other lenders from time to time party thereto (the “Lenders”). The credit agreement has a scheduled maturity date of May 4, 2018.

Pursuant to the credit agreement, the Lenders have committed to provide advances up to an aggregate principal amount of $1,200,000 at any one time outstanding, and the Company has the option to request increases in the aggregate commitments provided that the aggregate commitments never exceed $1,500,000. For any such increase, the Company may ask one or more Lenders to increase their existing commitments and/or invite additional eligible lenders to become Lenders under the credit agreement. As part of the aggregate commitments under the facility, the credit agreement provides for letters of credit to be issued at the request of the Company in an aggregate amount not to exceed the aggregate commitments and for swing line loans to be issued at the request of the Company in an aggregate amount not to exceed a $25,000 sublimit.

Interest accrues on advances, at the Company’s option, at a LIBOR rate or a base rate plus an applicable margin for each interest period. The issuing fees for all letters of credit are also based on an applicable margin. The applicable margin used in connection with interest rates and fees is based on the Company’s consolidated leverage ratio. The applicable margin for LIBOR rate loans and letter of credit fees ranges from 1.125% to 1.750% and the applicable margin for base rate loans and swing line loans ranges from 0.125% to 0.750%. The Company will also pay a fee based on its consolidated leverage ratio on the actual daily unused amount of the aggregate commitments. The borrowings under the credit agreement are not collateralized. Proceeds of the borrowings under the credit agreement were used to refinance the previous credit facility, under which $680,000 was outstanding, and which had a maturity of July 2016, and future borrowings will be used for general corporate purposes, including working capital, capital expenditures and permitted acquisitions.

The credit agreement contains representations, warranties, covenants and events of default, including a change of control event of default and limitations on incurrence of indebtedness and liens, new lines of business, mergers, transactions with affiliates and restrictive agreements. The credit agreement also includes covenants limiting, as of the last day of each fiscal quarter, (a) the ratio of the consolidated funded debt as of such date to the Consolidated EBITDA (as defined in the credit agreement), measured for the preceding 12 months, to not more than 3.50 to 1.00 and (b) the ratio of Consolidated EBIT (as defined in the credit agreement) to consolidated interest expense, in each case, measured for the preceding 12 months, to not less than 2.75 to 1.00. During the continuance of an event of default, the Lenders may take a number of actions, including declaring the entire amount then outstanding under the credit agreement due and payable.

Amendment to Term Loan Agreement

On May 6, 2013, the Company and certain of its subsidiaries entered into an amendment (the “Term Loan Amendment”) to its term loan facility, which changed the range of the additional interest margin applicable to borrowings under the term loan facility to 1.375% to 2.375%, from 1.375% to 2.500%, with respect to LIBOR borrowings and to 0.375% to 1.375%, from 0.375% to 1.500%, with respect to base rate borrowings. All other original terms remain applicable.

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Components of Other Comprehensive Income (Loss) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Components of Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), Gross Total	$ 552	$ (346)	$ 5,203	$ (4,194)
Income tax (benefit) expense related to items of other comprehensive income	(211)	131	(1,985)	1,594
Amounts reclassified, net of tax			2,595	347
Changes in fair value, net of taxes			623	(2,947)
Other comprehensive income (loss), Total, Net of tax	341	(215)	3,218	(2,600)
Interest Rate Swap
Components of Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified, gross	1,424	1,380	4,203	3,886
Changes in fair value, gross	(1,310)	(2,415)	514	(7,208)
Amounts reclassified, tax effect	(545)	(525)	(1,608)	(1,477)
Changes in fair value, tax effect	501	918	(191)	2,739
Amounts reclassified, net of tax	879	855	2,595	2,409
Changes in fair value, net of taxes	(809)	(1,497)	323	(4,469)
Fuel Hedge
Components of Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified, gross		(1,093)		(3,327)
Changes in fair value, gross	438	1,782	486	2,455
Amounts reclassified, tax effect		415		1,265
Changes in fair value, tax effect	(167)	(677)	(186)	(933)
Amounts reclassified, net of tax		(678)		(2,062)
Changes in fair value, net of taxes	$ 271	$ 1,105	$ 300	$ 1,522

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Segment Reporting (Tables)

9 Months Ended

Sep. 30, 2013

Summary of Financial Information Concerning Company's Reportable Segments

Summarized financial information concerning the Company’s reportable segments for the three and nine months ended September 30, 2013 and 2012, is shown in the following tables:

Three Months Ended September 30, 2013	Gross Revenues		Intercompany Revenues(b)			Net Revenues		EBITDA(c)
Western	$	236,849	$	(26,638	)	$	210,211	$	67,773
Central		151,181		(16,848	)		134,333		48,845
Eastern		115,944		(19,884	)		96,060		28,038
E&P		65,376		(2,334	)		63,042		31,125
Corporate(a)		—		—			—		188
	$	569,350	$	(65,704	)	$	503,646	$	175,969

Three Months Ended September 30, 2012	Gross Revenues		Intercompany Revenues(b)			Net Revenues		EBITDA(c)
Western	$	228,906	$	(24,943	)	$	203,963	$	61,119
Central		139,802		(14,007	)		125,795		47,072
Eastern		112,753		(19,995	)		92,758		26,113
E&P		3,138		—			3,138		2,122
Corporate(a)		—		—			—		(1,992	)
	$	484,599	$	(58,945	)	$	425,654	$	134,434

Nine Months Ended September 30, 2013	Gross Revenues		Intercompany Revenues(b)			Net Revenues		EBITDA(c)
Western	$	682,705	$	(76,510	)	$	606,195	$	188,736
Central		426,353		(46,993	)		379,360		137,600
Eastern		336,916		(57,362	)		279,554		82,947
E&P		186,255		(8,446	)		177,809		82,036
Corporate(a)		—		—			—		(2,679	)
	$	1,632,229	$	(189,311	)	$	1,442,918	$	488,640

Nine Months Ended September 30, 2012	Gross Revenues		Intercompany Revenues(b)			Net Revenues		EBITDA(c)
Western	$	660,679	$	(74,513	)	$	586,166	$	173,810
Central		384,520		(42,215	)		342,305		122,688
Eastern		332,883		(57,452	)		275,431		77,879
E&P		8,913		—			8,913		6,011
Corporate(a)		—		—			—		(9,823	)
	$	1,386,995	$	(174,180	)	$	1,212,815	$	370,565

(a) Corporate functions include accounting, legal, tax, treasury, information technology, risk management, human resources, training and other administrative functions. Amounts reflected are net of allocations to the four operating segments.

(b) Intercompany revenues reflect each segment’s total intercompany sales, including intercompany sales within a segment and between segments. Transactions within and between segments are generally made on a basis intended to reflect the market value of the service.

(c) For those items included in the determination of EBITDA, the accounting policies of the segments are the same as those described in the Company’s most recent Annual Report on Form 10-K.

Changes In Goodwill by Reportable Segment

The following tables show changes in goodwill during the nine months ended September 30, 2013 and 2012, by reportable segment:

	Western			Central			Eastern		E&P		Total
Balance as of December 31, 2012	$	373,143		$	430,412		$	380,561	$	452,441	$	1,636,557
Goodwill transferred		—			(9,196	)		—		9,196		—
Goodwill acquired		521			70			567		575		1,733
Goodwill divested		(749	)		—			—		—		(749	)
Balance as of September 30, 2013	$	372,915		$	421,286		$	381,128	$	462,212	$	1,637,541

	Western		Central			Eastern		E&P		Total
Balance as of December 31, 2011	$	313,038	$	424,223		$	379,627	$	—	$	1,116,888
Goodwill acquired		60,043		6,690			238		—		66,971
Goodwill divested		—		(496	)		—		—		(496	)
Balance as of September 30, 2012	$	373,081	$	430,417		$	379,865	$	—	$	1,183,363

Reconciliation of Company's Primary Measure of Segment Profitability to Income Before Income Tax Provision

A reconciliation of the Company’s primary measure of segment profitability (EBITDA) to Income before income tax provision in the Condensed Consolidated Statements of Net Income is as follows:

	Three months ended September 30,						Nine months ended September 30,
	2013			2012			2013			2012
Western segment EBITDA	$	67,773		$	61,119		$	188,736		$	173,810
Central segment EBITDA		48,845			47,072			137,600			122,688
Eastern segment EBITDA		28,038			26,113			82,947			77,879
E&P segment EBITDA		31,125			2,122			82,036			6,011
Subtotal reportable segments		175,781			136,426			491,319			380,388
Unallocated corporate overhead		188			(1,992	)		(2,679	)		(9,823	)
Depreciation		(55,863	)		(42,313	)		(162,277	)		(119,331	)
Amortization of intangibles		(6,211	)		(6,267	)		(18,861	)		(18,115	)
Gain (loss) on disposal of assets		1,129			(244	)		(1,993	)		(715	)
Gain (loss) on prior office leases		596			—			(9,902	)		—
Gain from litigation settlement		—			3,537			—			3,537
Interest expense		(17,911	)		(11,949	)		(55,851	)		(36,063	)
Other income (expense), net		845			825			(119	)		1,663
Income before income tax provision	$	98,554		$	78,023		$	239,637		$	201,541

Total Reported Revenues by Service Line

The following table shows, for the periods indicated, the Company’s total reported revenues by service line and with intercompany eliminations:

	Three months ended September 30,						Nine months ended September 30,
	2013			2012			2013			2012
Solid waste collection	$	312,872		$	304,166		$	912,488		$	880,920
Solid waste disposal and transfer		158,142			142,293			434,513			390,576
E&P waste treatment, disposal and recovery		68,605			5,824			194,720			15,458
Solid waste recycling		18,402			18,712			55,806			61,809
Intermodal and other		11,329			13,604			34,702			38,232
		569,350			484,599			1,632,229			1,386,995
Less: intercompany elimination		(65,704	)		(58,945	)		(189,311	)		(174,180	)
Total revenues	$	503,646		$	425,654		$	1,442,918		$	1,212,815

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Acquisitions - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended			1 Months Ended		9 Months Ended
	Sep. 30, 2013 Entity	Sep. 30, 2012 Entity	Mar. 31, 2013 R360 Environmental Solutions Inc	Oct. 31, 2012 R360 Environmental Solutions Inc Working Capital	Jul. 31, 2013 SKB	Sep. 30, 2013 SKB
Business Acquisition [Line Items]
Number of individual businesses acquired	6
Number of individual businesses acquired that are not specifically described		5
Additional consideration,earn out period						1 year
Fair value of contingent consideration at purchase date						$ 20,711
Payment of contingent consideration gross					25,768
Cash consideration, net of cash acquired	2,031	223,256		18,906
Adjustment to net working capital			18,000
Acquisition related costs	$ 974	$ 3,610

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Segment Reporting

9 Months Ended

Sep. 30, 2013

Segment Reporting

8. SEGMENT REPORTING

The Company’s revenues are generated from the collection, transfer, recycling and disposal of non-hazardous solid waste and the treatment, recovery and disposal of non-hazardous E&P waste. No single contract or customer accounted for more than 10% of the Company’s total revenues at the consolidated or reportable segment level during the periods presented.

Prior to October 2012, the Company managed its operations through three geographic operating segments (Western, Central and Eastern), which were also its reportable segments. In October 2012, as a result of the R360 acquisition, the Company realigned its reporting structure and created a fourth operating segment, the E&P segment, which includes the majority of the Company’s E&P waste treatment and disposal operations. As a result, the Company’s three geographic operating segments and its E&P segment comprise the Company’s reportable segments. Additionally, in January 2013, the Company transferred an E&P operation in Louisiana, owned by the Company prior to the R360 acquisition, from its Central segment to its E&P segment. Each operating segment is responsible for managing several vertically integrated operations, which are comprised of districts. The segment information presented herein reflects the addition of the new E&P segment and the transfer of the Company’s E&P operation in Louisiana to the E&P segment. Under the current structure, the Company’s Western segment is comprised of operating locations in Alaska, California, Idaho, Montana, Nevada, Oregon, Washington and western Wyoming; the Company’s Central segment is comprised of operating locations in Arizona, Colorado, Kansas, Louisiana, Minnesota, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, Utah and eastern Wyoming; and the Company’s Eastern segment is comprised of operating locations in Alabama, Illinois, Iowa, Kentucky, Massachusetts, Michigan, Mississippi, New York, North Carolina, South Carolina and Tennessee. The E&P segment is comprised of the Company’s E&P operations in Louisiana, New Mexico, North Dakota, Oklahoma, Texas, Wyoming and along the Gulf of Mexico.

The Company’s Chief Operating Decision Maker (“CODM”) evaluates operating segment profitability and determines resource allocations based on several factors, of which the primary financial measure is EBITDA. The Company defines EBITDA as earnings before interest, taxes, depreciation, amortization, gain (loss) on disposal of assets, loss on prior office leases and other income (expense). EBITDA is not a measure of operating income, operating performance or liquidity under GAAP and may not be comparable to similarly titled measures reported by other companies. The Company’s management uses EBITDA in the evaluation of segment operating performance as it is a profit measure that is generally within the control of the operating segments. A reconciliation of EBITDA to Income before income tax provision is included at the end of this Note 8.

Summarized financial information concerning the Company’s reportable segments for the three and nine months ended September 30, 2013 and 2012, is shown in the following tables:

Three Months Ended September 30, 2013	Gross Revenues		Intercompany Revenues(b)			Net Revenues		EBITDA(c)
Western	$	236,849	$	(26,638	)	$	210,211	$	67,773
Central		151,181		(16,848	)		134,333		48,845
Eastern		115,944		(19,884	)		96,060		28,038
E&P		65,376		(2,334	)		63,042		31,125
Corporate(a)		—		—			—		188
	$	569,350	$	(65,704	)	$	503,646	$	175,969

Three Months Ended September 30, 2012	Gross Revenues		Intercompany Revenues(b)			Net Revenues		EBITDA(c)
Western	$	228,906	$	(24,943	)	$	203,963	$	61,119
Central		139,802		(14,007	)		125,795		47,072
Eastern		112,753		(19,995	)		92,758		26,113
E&P		3,138		—			3,138		2,122
Corporate(a)		—		—			—		(1,992	)
	$	484,599	$	(58,945	)	$	425,654	$	134,434

Nine Months Ended September 30, 2013	Gross Revenues		Intercompany Revenues(b)			Net Revenues		EBITDA(c)
Western	$	682,705	$	(76,510	)	$	606,195	$	188,736
Central		426,353		(46,993	)		379,360		137,600
Eastern		336,916		(57,362	)		279,554		82,947
E&P		186,255		(8,446	)		177,809		82,036
Corporate(a)		—		—			—		(2,679	)
	$	1,632,229	$	(189,311	)	$	1,442,918	$	488,640

Nine Months Ended September 30, 2012	Gross Revenues		Intercompany Revenues(b)			Net Revenues		EBITDA(c)
Western	$	660,679	$	(74,513	)	$	586,166	$	173,810
Central		384,520		(42,215	)		342,305		122,688
Eastern		332,883		(57,452	)		275,431		77,879
E&P		8,913		—			8,913		6,011
Corporate(a)		—		—			—		(9,823	)
	$	1,386,995	$	(174,180	)	$	1,212,815	$	370,565

(a) Corporate functions include accounting, legal, tax, treasury, information technology, risk management, human resources, training and other administrative functions. Amounts reflected are net of allocations to the four operating segments.

(b) Intercompany revenues reflect each segment’s total intercompany sales, including intercompany sales within a segment and between segments. Transactions within and between segments are generally made on a basis intended to reflect the market value of the service.

(c) For those items included in the determination of EBITDA, the accounting policies of the segments are the same as those described in the Company’s most recent Annual Report on Form 10-K.

The following tables show changes in goodwill during the nine months ended September 30, 2013 and 2012, by reportable segment:

	Western			Central			Eastern		E&P		Total
Balance as of December 31, 2012	$	373,143		$	430,412		$	380,561	$	452,441	$	1,636,557
Goodwill transferred		—			(9,196	)		—		9,196		—
Goodwill acquired		521			70			567		575		1,733
Goodwill divested		(749	)		—			—		—		(749	)
Balance as of September 30, 2013	$	372,915		$	421,286		$	381,128	$	462,212	$	1,637,541

	Western		Central			Eastern		E&P		Total
Balance as of December 31, 2011	$	313,038	$	424,223		$	379,627	$	—	$	1,116,888
Goodwill acquired		60,043		6,690			238		—		66,971
Goodwill divested		—		(496	)		—		—		(496	)
Balance as of September 30, 2012	$	373,081	$	430,417		$	379,865	$	—	$	1,183,363

The Company has no accumulated impairment losses associated with goodwill.

A reconciliation of the Company’s primary measure of segment profitability (EBITDA) to Income before income tax provision in the Condensed Consolidated Statements of Net Income is as follows:

	Three months ended September 30,						Nine months ended September 30,
	2013			2012			2013			2012
Western segment EBITDA	$	67,773		$	61,119		$	188,736		$	173,810
Central segment EBITDA		48,845			47,072			137,600			122,688
Eastern segment EBITDA		28,038			26,113			82,947			77,879
E&P segment EBITDA		31,125			2,122			82,036			6,011
Subtotal reportable segments		175,781			136,426			491,319			380,388
Unallocated corporate overhead		188			(1,992	)		(2,679	)		(9,823	)
Depreciation		(55,863	)		(42,313	)		(162,277	)		(119,331	)
Amortization of intangibles		(6,211	)		(6,267	)		(18,861	)		(18,115	)
Gain (loss) on disposal of assets		1,129			(244	)		(1,993	)		(715	)
Gain (loss) on prior office leases		596			—			(9,902	)		—
Gain from litigation settlement		—			3,537			—			3,537
Interest expense		(17,911	)		(11,949	)		(55,851	)		(36,063	)
Other income (expense), net		845			825			(119	)		1,663
Income before income tax provision	$	98,554		$	78,023		$	239,637		$	201,541

The following table shows, for the periods indicated, the Company’s total reported revenues by service line and with intercompany eliminations:

	Three months ended September 30,						Nine months ended September 30,
	2013			2012			2013			2012
Solid waste collection	$	312,872		$	304,166		$	912,488		$	880,920
Solid waste disposal and transfer		158,142			142,293			434,513			390,576
E&P waste treatment, disposal and recovery		68,605			5,824			194,720			15,458
Solid waste recycling		18,402			18,712			55,806			61,809
Intermodal and other		11,329			13,604			34,702			38,232
		569,350			484,599			1,632,229			1,386,995
Less: intercompany elimination		(65,704	)		(58,945	)		(189,311	)		(174,180	)
Total revenues	$	503,646		$	425,654		$	1,442,918		$	1,212,815

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Landfill Accounting

9 Months Ended

Sep. 30, 2013

Landfill Accounting

4. LANDFILL ACCOUNTING

At September 30, 2013, the Company owned or operated 42 municipal solid waste (“MSW”) landfills, five exploration and production (“E&P”) waste landfills, which only accept E&P waste, and seven non-MSW landfills, which only accept construction and demolition, industrial and other non-putrescible waste. At September 30, 2013, the Company owned 43 landfills, and operated, but did not own, six landfills under life-of-site operating agreements and five landfills under limited-term operating agreements. The Company’s landfills had site costs with a net book value of $1,626,169 at September 30, 2013. For the Company’s landfills operated under limited-term operating agreements and life-of-site operating agreements, the owner of the property (generally a municipality) usually owns the permit and the Company operates the landfill for a contracted term. Where the contracted term is not the life of the landfill, the property owner is generally responsible for final capping, closure and post-closure obligations. The Company is responsible for all final capping, closure and post-closure liabilities at five of the six landfills that it operates under life-of-site operating agreements.

The Company’s internal and third-party engineers perform surveys at least annually to estimate the remaining disposal capacity at its landfills. Many of the Company’s existing landfills have the potential for expanded disposal capacity beyond the amount currently permitted. The Company’s landfill depletion rates are based on the remaining disposal capacity, considering both permitted and probable expansion airspace, at the landfills it owns, and certain landfills it operates, but does not own, under life-of-site agreements. The Company’s landfill depletion rate is based on the term of the operating agreement at its operated landfill that has capitalized expenditures. Expansion airspace consists of additional disposal capacity being pursued through means of an expansion that has not yet been permitted. Expansion airspace that meets certain criteria is included in the estimate of total landfill airspace.

Based on remaining permitted capacity as of September 30, 2013, and projected annual disposal volumes, the average remaining landfill life for the Company’s owned landfills and landfills operated under life-of-site operating agreements is estimated to be approximately 34 years. As of September 30, 2013, the Company is seeking to expand permitted capacity at eight of its owned landfills and two landfills that it operates under life-of-site operating agreements, and considers the achievement of these expansions to be probable. Although the Company cannot be certain that all future expansions will be permitted as designed, the average remaining life, when considering remaining permitted capacity, probable expansion capacity and projected annual disposal volume, of the Company’s owned landfills and landfills operated under life-of-site operating agreements is approximately 43 years, with lives ranging from approximately 6 to 201 years.

During the nine months ended September 30, 2013 and 2012, the Company expensed $60,142 and $35,219, respectively, or an average of $4.21 and $3.15 per ton consumed, respectively, related to landfill depletion at owned landfills and landfills operated under life-of-site agreements.

The Company reserves for final capping, closure and post-closure maintenance obligations at the landfills it owns and five of the six landfills it operates under life-of-site operating agreements. The Company calculates the net present value of its final capping, closure and post-closure liabilities by estimating the total obligation in current dollars, inflating the obligation based upon the expected date of the expenditure and discounting the inflated total to its present value using a credit-adjusted risk-free rate. Any changes in expectations that result in an upward revision to the estimated undiscounted cash flows are treated as a new liability and are inflated and discounted at rates reflecting current market conditions. Any changes in expectations that result in a downward revision (or no revision) to the estimated undiscounted cash flows result in a liability that is inflated and discounted at rates reflecting the market conditions at the time the cash flows were originally estimated. This policy results in the Company’s final capping, closure and post-closure liabilities being recorded in “layers.” The Company’s discount rate assumption for purposes of computing 2013 and 2012 “layers” for final capping, closure and post-closure obligations was 5.75% for each year, which reflects the Company’s long-term cost of borrowing as of the end of 2012 and 2011. The Company’s inflation rate assumption is 2.5% for the years ending December 31, 2013 and 2012. The resulting final capping, closure and post-closure obligations are recorded on the balance sheet along with an offsetting addition to site costs which is amortized to depletion expense as the remaining landfill airspace is consumed. Interest is accreted on the recorded liability using the corresponding discount rate. During the nine months ended September 30, 2013 and 2012, the Company expensed $2,077 and $1,870, respectively, or an average of $0.15 and $0.17 per ton consumed, respectively, related to final capping, closure and post-closure accretion expense.

The following is a reconciliation of the Company’s final capping, closure and post-closure liability balance from December 31, 2012 to September 30, 2013:

Final capping, closure and post-closure liability at December 31, 2012	$	46,473
Adjustments to final capping, closure and post-closure liabilities		(3,596	)
Liabilities incurred		3,884
Accretion expense associated with landfill obligations		2,077
Closure payments		(182	)
Final capping, closure and post-closure liability at September 30, 2013	$	48,656

The Adjustments to final capping, closure and post-closure liabilities primarily consisted of increases in estimated airspace at some of the Company’s landfills at which expansions are being pursued or have been granted, decreases in estimated closure costs at some of the Company’s landfills and revisions in engineering estimates, partially offset by an increase in estimates of annual tonnage consumption at some of the Company’s landfills. The Company performs its annual review of its cost and capacity estimates in the first quarter of each year.

At September 30, 2013, $32,816 of the Company’s restricted assets balance was for purposes of securing its performance of future final capping, closure and post-closure obligations.

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Condensed Consolidated Statements of Equity (Parenthetical) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012
Issuance costs of common stock	$ 376

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Derivative Financial Instruments - Company's Derivative Instruments of Interest Rate Swaps (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013
Interest Rate Swap One
Derivative [Line Items]
Date Entered	2009-03
Notional Amount	$ 175,000
Fixed Interest Rate Paid	2.85%	[1]
Variable Interest Rate Received	1-month LIBOR
Effective Date	2011-02
Expiration Date	2014-02
Interest Rate Swap Two
Derivative [Line Items]
Date Entered	2011-08
Notional Amount	150,000
Fixed Interest Rate Paid	0.80%	[1]
Variable Interest Rate Received	1-month LIBOR
Effective Date	2012-04
Expiration Date	2015-01
Interest Rate Swap Three
Derivative [Line Items]
Date Entered	2011-12
Notional Amount	$ 175,000
Fixed Interest Rate Paid	1.60%	[1]
Variable Interest Rate Received	1-month LIBOR
Effective Date	2014-02
Expiration Date	2017-02

[1] plus applicable margin.

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Summary of Financial Information Concerning Company's Reportable Segments (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Segment Reporting Information [Line Items]
Revenues	$ 503,646		$ 425,654		$ 1,442,918		$ 1,212,815
EBITDA	175,969	[1]	134,434	[1]	488,640	[1]	370,565	[1]
Western
Segment Reporting Information [Line Items]
Revenues	210,211		203,963		606,195		586,166
Central
Segment Reporting Information [Line Items]
Revenues	134,333		125,795		379,360		342,305
Eastern
Segment Reporting Information [Line Items]
Revenues	96,060		92,758		279,554		275,431
Exploration and Production
Segment Reporting Information [Line Items]
Revenues	63,042		3,138		177,809		8,913
Corporate, Non-Segment
Segment Reporting Information [Line Items]
EBITDA	188	[1],[2]	(1,992)	[1],[2]	(2,679)	[1],[2]	(9,823)	[1],[2]
Operating Segments
Segment Reporting Information [Line Items]
Revenues	569,350		484,599		1,632,229		1,386,995
EBITDA	175,781		136,426		491,319		380,388
Operating Segments | Western
Segment Reporting Information [Line Items]
Revenues	236,849		228,906		682,705		660,679
EBITDA	67,773	[1]	61,119	[1]	188,736	[1]	173,810	[1]
Operating Segments | Central
Segment Reporting Information [Line Items]
Revenues	151,181		139,802		426,353		384,520
EBITDA	48,845	[1]	47,072	[1]	137,600	[1]	122,688	[1]
Operating Segments | Eastern
Segment Reporting Information [Line Items]
Revenues	115,944		112,753		336,916		332,883
EBITDA	28,038	[1]	26,113	[1]	82,947	[1]	77,879	[1]
Operating Segments | Exploration and Production
Segment Reporting Information [Line Items]
Revenues	65,376		3,138		186,255		8,913
EBITDA	31,125	[1]	2,122	[1]	82,036	[1]	6,011	[1]
Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenues	(65,704)	[3]	(58,945)	[3]	(189,311)	[3]	(174,180)	[3]
Intersegment Eliminations | Western
Segment Reporting Information [Line Items]
Revenues	(26,638)	[3]	(24,943)	[3]	(76,510)	[3]	(74,513)	[3]
Intersegment Eliminations | Central
Segment Reporting Information [Line Items]
Revenues	(16,848)	[3]	(14,007)	[3]	(46,993)	[3]	(42,215)	[3]
Intersegment Eliminations | Eastern
Segment Reporting Information [Line Items]
Revenues	(19,884)	[3]	(19,995)	[3]	(57,362)	[3]	(57,452)	[3]
Intersegment Eliminations | Exploration and Production
Segment Reporting Information [Line Items]
Revenues	$ (2,334)	[3]			$ (8,446)	[3]

[1] For those items included in the determination of EBITDA, the accounting policies of the segments are the same as those described in the Company's most recent Annual Report on Form 10-K.

[2] Corporate functions include accounting, legal, tax, treasury, information technology, risk management, human resources, training and other administrative functions. Amounts reflected are net of allocations to the four operating segments.

[3] Intercompany revenues reflect each segment's total intercompany sales, including intercompany sales within a segment and between segments. Transactions within and between segments are generally made on a basis intended to reflect the market value of the service.

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Net Income Per Share Information (Tables)

9 Months Ended

Sep. 30, 2013

Basic and Diluted Net Income Per Common Share

The following table sets forth the calculation of the numerator and denominator used in the computation of basic and diluted net income per common share attributable to the Company’s common stockholders for the three and nine months ended September 30, 2013 and 2012:

	Three months ended September 30,				Nine months ended September 30,
	2013		2012		2013		2012
Numerator:
Net income attributable to Waste Connections for basic and diluted earnings per share	$	60,706	$	49,385	$	146,229	$	123,104
Denominator:
Basic shares outstanding		123,676,936		123,031,259		123,557,317		120,571,106
Dilutive effect of stock options and warrants		182,175		303,293		192,054		319,457
Dilutive effect of restricted stock units		420,555		331,037		340,051		308,338
Diluted shares outstanding		124,279,666		123,665,589		124,089,422		121,198,901

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Office Relocations - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013
Restructuring Cost and Reserve [Line Items]
Loss (gain) on prior office leases	$ (596)	$ 9,902

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Fair Value Measurements - Additional Information (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Minimum range of DOE index curve used in DCF model	$ 3.77	$ 3.68
Maximum range of DOE index curve used in DCF model	$ 3.90	$ 3.87
Weighted average DOE index curve used in DCF model	$ 3.84	$ 3.77

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Net Income Per Share Information

9 Months Ended

Sep. 30, 2013

Net Income Per Share Information

11. NET INCOME PER SHARE INFORMATION

The following table sets forth the calculation of the numerator and denominator used in the computation of basic and diluted net income per common share attributable to the Company’s common stockholders for the three and nine months ended September 30, 2013 and 2012:

	Three months ended September 30,				Nine months ended September 30,
	2013		2012		2013		2012
Numerator:
Net income attributable to Waste Connections for basic and diluted earnings per share	$	60,706	$	49,385	$	146,229	$	123,104
Denominator:
Basic shares outstanding		123,676,936		123,031,259		123,557,317		120,571,106
Dilutive effect of stock options and warrants		182,175		303,293		192,054		319,457
Dilutive effect of restricted stock units		420,555		331,037		340,051		308,338
Diluted shares outstanding		124,279,666		123,665,589		124,089,422		121,198,901

For the three months ended September 30, 2013 and 2012, stock options and warrants to purchase 493 and 78,545 shares of common stock, respectively, were excluded from the computation of diluted earnings per share as they were anti-dilutive. For the nine months ended September 30, 2013 and 2012, stock options and warrants to purchase 1,533 and 72,324 shares of common stock, respectively, were excluded from the computation of diluted earnings per share as they were anti-dilutive.

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Intangible Assets, Net

9 Months Ended

Sep. 30, 2013

Intangible Assets, Net

7. INTANGIBLE ASSETS, NET

Intangible assets, exclusive of goodwill, consisted of the following at September 30, 2013:

	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Finite-lived intangible assets:
Long-term franchise agreements and contracts	$	195,878	$	(43,606	)	$	152,272
Customer lists		139,789		(55,612	)		84,177
Other		41,394		(10,282	)		31,112
		377,061		(109,500	)		267,561
Indefinite-lived intangible assets:
Solid waste collection and transportation permits		151,505		—			151,505
Material recycling facility permits		42,283		—			42,283
E&P facility permits		59,855		—			59,855
		253,643		—			253,643
Intangible assets, exclusive of goodwill	$	630,704	$	(109,500	)	$	521,204

The weighted-average amortization period of customer lists acquired during the nine months ended September 30, 2013 was 6.7 years.

Intangible assets, exclusive of goodwill, consisted of the following at December 31, 2012:

	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Finite-lived intangible assets:
Long-term franchise agreements and contracts	$	198,779	$	(38,447	)	$	160,332
Customer lists		139,354		(43,457	)		95,897
Other		41,472		(9,436	)		32,036
		379,605		(91,340	)		288,265
Indefinite-lived intangible assets:
Solid waste collection and transportation permits		151,505		—			151,505
Material recycling facility permits		42,283		—			42,283
E&P facility permits		59,855		—			59,855
		253,643		—			253,643
Intangible assets, exclusive of goodwill	$	633,248	$	(91,340	)	$	541,908

Estimated future amortization expense for the next five years of finite-lived intangible assets is as follows:

For the year ending December 31, 2013	$	25,061
For the year ending December 31, 2014	$	24,410
For the year ending December 31, 2015	$	23,759
For the year ending December 31, 2016	$	19,807
For the year ending December 31, 2017	$	17,835

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Commitments and Contingencies - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	1 Months Ended		9 Months Ended
	May 31, 2011	Jul. 31, 2009 acre	Sep. 30, 2013 Entity T
Contingencies And Commitments [Line Items]
HDSWF purchased undeveloped land		325
Minimum number of days of prior notice for future permit hearing			120 days
Term period of Solid Waste Disposal and Operating Agreement			10 years
Term period of Solid Waste Franchise Agreement			40 months
Capitalized expenditures related to landfill development projects			$ 11,778
Capitalized expenditures company will be required to expense in future if new site permit approved			10,324
Capitalized expenditures the company will be required to expense in future if original site permit approved			1,454
Capitalized expenditures the company will be required to expense in future if site permits not approved			11,778
Pre-tax impairment charge related to Kansas landfill			18,700
Estimated annual impact on pre-tax earnings if company unable to operate the landfill			6,700
Maximum limit of import of solid waste			95,000
PHLF annual disposal of solid waste			935,000
Solid waste originated from sources outside of Solano County			787,000
Number of separate entities filed friend of court briefs			17
Aggregate settlement fee			771
Court issued final order awarding Petitioners attorneys fees	452
Amount of reduced attorney fees in court final order	411
Allocated attorney fees			50.00%
Expected pre-tax impairment charge related to PHLF if Measure E is ultimately ruled to be unenforceable			33,000
Amount of monetary damages County is seeking			2,962
Pre-judgment interest			10.00%
Period to cure the default			30 days
Current annual impact to pre-tax earnings resulting from termination of MDSI's contracts with Madera County			$ 2,300

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Stockholders' Equity

9 Months Ended

Sep. 30, 2013

Stockholders' Equity

14. STOCKHOLDERS’ EQUITY

Sale of Common Stock

On February 27, 2012, the Company entered into an underwriting agreement with Morgan Stanley & Co. LLC, in connection with the offer and sale by the Company of 12,000,000 shares of its common stock, par value $0.01 per share. The shares of common stock were sold to Morgan Stanley & Co. LLC at a price of $30.83 per share. The offering closed on March 2, 2012. The Company received net proceeds from this offering of $369,584 after deducting transaction expenses paid by the Company of approximately $376.

Stock-Based Compensation

A summary of activity related to restricted stock units under the Third Amended and Restated 2004 Equity Incentive Plan during the nine month period ended September 30, 2013, is presented below:

	Unvested Shares
Outstanding at December 31, 2012		1,317,798
Granted		574,017
Forfeited		(41,959	)
Vested and Issued		(480,903	)
Vested and Unissued		(61,518	)
Outstanding at September 30, 2013		1,307,435

The weighted average grant-date fair value per share for the shares of common stock underlying the restricted stock units granted during the nine month period ended September 30, 2013 was $34.06.

Share Repurchase Program

The Company’s Board of Directors has authorized a common stock repurchase program for the repurchase of up to $1,200,000 of common stock through December 31, 2014. Under the program, stock repurchases may be made in the open market or in privately negotiated transactions from time to time at management’s discretion. The timing and amounts of any repurchases will depend on many factors, including the Company’s capital structure, the market price of the common stock and overall market conditions. During the nine months ended September 30, 2013, the Company did not repurchase any shares of its common stock. During the nine months ended September 30, 2012, the Company repurchased 619,447 shares of its common stock under this program at a cost of $18,597. As of September 30, 2013, the remaining maximum dollar value of shares available for repurchase under the program was approximately $415,960. The Company’s policy related to repurchases of its common stock is to charge any excess of cost over par value entirely to additional paid-in capital.

Cash Dividend

In October 2012, the Company announced that its Board of Directors increased its regular quarterly cash dividend by $0.01, from $0.09 to $0.10 per share. Cash dividends of $37,005 and $32,182 were paid during the nine months ended September 30, 2013 and 2012, respectively.

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Fair Value Measurements

9 Months Ended

Sep. 30, 2013

Fair Value Measurements

12. FAIR VALUE MEASUREMENTS

The Company uses a three-tier fair value hierarchy to classify and disclose all assets and liabilities measured at fair value on a recurring basis, as well as assets and liabilities measured at fair value on a non-recurring basis, in periods subsequent to their initial measurement. These tiers include: Level 1, defined as quoted market prices in active markets for identical assets or liabilities; Level 2, defined as inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active, model-based valuation techniques for which all significant assumptions are observable in the market, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities; and Level 3, defined as unobservable inputs that are not corroborated by market data.

The Company’s financial assets and liabilities recorded at fair value on a recurring basis include derivative instruments and restricted assets. The Company’s derivative instruments are pay-fixed, receive-variable interest rate swaps and a pay-fixed, receive-variable diesel fuel hedge. The Company’s interest rate swaps are recorded at their estimated fair values based on quotes received from financial institutions that trade these contracts. The Company verifies the reasonableness of these quotes using similar quotes from another financial institution as of each date for which financial statements are prepared. The Company uses a discounted cash flow (“DCF”) model to determine the estimated fair value of the diesel fuel hedge. The assumptions used in preparing the DCF model include: (i) estimates for the forward DOE index curve; and (ii) the discount rate based on risk-free interest rates over the term of the hedge contract. The DOE index curve used in the DCF model was obtained from financial institutions that trade these contracts and ranged from $3.77 to $3.90 at September 30, 2013 and from $3.68 to $3.87 at December 31, 2012. The weighted average DOE index curve used in the DCF model was $3.84 and $3.77 at September 30, 2013 and December 31, 2012, respectively. Significant increases (decreases) in the forward DOE index curve would result in a significantly higher (lower) fair value measurement. For the Company’s interest rate swaps and fuel hedge, the Company also considers the Company’s creditworthiness in its determination of the fair value measurement of these instruments in a net liability position and the banks’ creditworthiness in its determination of the fair value measurement of these instruments in a net asset position. The Company’s restricted assets are valued at quoted market prices in active markets for identical assets, which the Company receives from the financial institutions that hold such investments on its behalf. The Company’s restricted assets measured at fair value are invested primarily in U.S. government and agency securities.

The Company’s assets and liabilities measured at fair value on a recurring basis at September 30, 2013 and December 31, 2012, were as follows:

	Fair Value Measurement at September 30, 2013 Using
	Total			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
Interest rate swap derivative instruments – net liability position	$	(6,446	)	$	—	$	(6,446	)	$	—
Fuel hedge derivative instrument – net asset position	$	1,673		$	—	$	—		$	1,673
Restricted assets	$	34,157		$	34,157	$	—		$	—

	Fair Value Measurement at December 31, 2012 Using
	Total			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
Interest rate swap derivative instruments – net liability position	$	(11,163	)	$	—	$	(11,163	)	$	—
Fuel hedge derivative instrument – net asset position	$	1,187		$	—	$	—		$	1,187
Restricted assets	$	33,425		$	33,425	$	—		$	—

The following table summarizes the change in the fair value for Level 3 derivatives for the nine months ended September 30, 2013:

	Level 3 Derivatives
Balance as of December 31, 2012	$	1,187
Unrealized gains included in AOCL		486
Balance as of September 30, 2013	$	1,673

The following table summarizes the change in the fair value for Level 3 derivatives for the nine months ended September 30, 2012:

	Level 3 Derivatives
Balance as of December 31, 2011	$	3,506
Realized gains included in earnings		(3,327	)
Unrealized gains included in AOCL		2,455
Balance as of September 30, 2012	$	2,634

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Document and Entity Information	9 Months Ended
	Sep. 30, 2013	Oct. 14, 2013
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q3
Trading Symbol	WCN
Entity Registrant Name	WASTE CONNECTIONS, INC.
Entity Central Index Key	0001057058
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		123,546,601

XML

Other Comprehensive Income (Loss)

9 Months Ended

Sep. 30, 2013

Other Comprehensive Income (Loss)

13. OTHER COMPREHENSIVE INCOME (LOSS)

Other comprehensive income (loss) includes changes in the fair value of interest rate swaps and the fuel hedge that qualify for hedge accounting. The components of other comprehensive income (loss) and related tax effects for the three and nine month periods ended September 30, 2013 and 2012, are as follows:

	Three months ended September 30, 2013
	Gross			Tax effect			Net of tax
Interest rate swap amounts reclassified into interest expense	$	1,424		$	(545	)	$	879
Changes in fair value of interest rate swaps		(1,310	)		501			(809	)
Changes in fair value of fuel hedge		438			(167	)		271
	$	552		$	(211	)	$	341

	Three months ended September 30, 2012
	Gross			Tax effect			Net of tax
Interest rate swap amounts reclassified into interest expense	$	1,380		$	(525	)	$	855
Fuel hedge amounts reclassified into cost of operations		(1,093	)		415			(678	)
Changes in fair value of interest rate swaps		(2,415	)		918			(1,497	)
Changes in fair value of fuel hedge		1,782			(677	)		1,105
	$	(346	)	$	131		$	(215	)

	Nine months ended September 30, 2013
	Gross		Tax effect			Net of tax
Interest rate swap amounts reclassified into interest expense	$	4,203	$	(1,608	)	$	2,595
Changes in fair value of interest rate swaps		514		(191	)		323
Changes in fair value of fuel hedge		486		(186	)		300
	$	5,203	$	(1,985	)	$	3,218

	Nine months ended September 30, 2012
	Gross			Tax effect			Net of tax
Interest rate swap amounts reclassified into interest expense	$	3,886		$	(1,477	)	$	2,409
Fuel hedge amounts reclassified into cost of operations		(3,327	)		1,265			(2,062	)
Changes in fair value of interest rate swaps		(7,208	)		2,739			(4,469	)
Changes in fair value of fuel hedge		2,455			(933	)		1,522
	$	(4,194	)	$	1,594		$	(2,600	)

A rollforward of the amounts included in AOCL, net of taxes, is as follows:

	Fuel Hedge		Interest Rate Swaps			Accumulated Other Comprehensive Loss
Balance at December 31, 2012	$	732	$	(6,897	)	$	(6,165	)
Amounts reclassified into earnings		—		2,595			2,595
Changes in fair value		300		323			623
Balance at September 30, 2013	$	1,032	$	(3,979	)	$	(2,947	)

See Note 9 for further discussion on the Company’s derivative instruments.

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Change in Fair Value for Level 3 Derivatives (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Beginning Balance	$ 1,187	$ 3,506
Realized gains included in earnings		(3,327)
Unrealized gains included in AOCL	486	2,455
Ending Balance	$ 1,673	$ 2,634

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Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (Fair Value, Measurements, Recurring, USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted assets	$ 34,157	$ 33,425
Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instrument - net	(6,446)	(11,163)
Fuel Hedge Agreements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instrument - net	1,673	1,187
Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted assets	34,157	33,425
Fair Value, Inputs, Level 2 | Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instrument - net	(6,446)	(11,163)
Fair Value, Inputs, Level 3 | Fuel Hedge Agreements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instrument - net	$ 1,673	$ 1,187