10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

x	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
FOR THE QUARTERLY PERIOD ENDED JUNE 30, 2011
OR
o	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 001-34223

CLEAN HARBORS, INC.

(Exact name of registrant as specified in its charter)

Massachusetts	04-2997780
(State of Incorporation)	(IRS Employer Identification No.)
42 Longwater Drive, Norwell, MA	02061-9149
(Address of Principal Executive Offices)	(Zip Code)

(781) 792-5000

(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 twelve 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 xNo o

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  xNo o

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 o
Non-accelerated filer o	Smaller reporting company o
(Do not check if a smaller reporting company)

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

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.

Common Stock, $.01 par value	53,013,677
(Class)	(Outstanding at August 3, 2011)

CLEAN HARBORS, INC.

QUARTERLY REPORT ON FORM 10-Q

TABLE OF CONTENTS

	Page No.
PART I: FINANCIAL INFORMATION
ITEM 1: Unaudited Financial Statements
Consolidated Balance Sheets	1
Unaudited Consolidated Statements of Income	3
Unaudited Consolidated Statements of Cash Flows	4
Unaudited Consolidated Statements of Stockholders’ Equity	5
Notes to Unaudited Consolidated Financial Statements	6
ITEM 2: Management’s Discussion and Analysis of Financial Condition and Results of Operations	27
ITEM 3: Quantitative and Qualitative Disclosures About Market Risk	40
ITEM 4: Controls and Procedures	40
PART II: OTHER INFORMATION	41
Items No. 1 through 6	41
Signatures	44

CLEAN HARBORS, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

ASSETS

(in thousands)

	June 30, 2011		December 31, 2010
	(unaudited)
Current assets:
Cash and cash equivalents	$	377,576	$	302,210
Marketable securities	128		3,174
Accounts receivable, net of allowances aggregating $15,729 and $23,704, respectively	352,809		332,678
Unbilled accounts receivable	30,588		19,117
Deferred costs	6,289		6,891
Prepaid expenses and other current assets	32,828		28,939
Supplies inventories	47,270		44,546
Deferred tax assets	18,884		14,982
Total current assets	866,372		752,537
Property, plant and equipment:
Land	32,782		31,654
Asset retirement costs (non-landfill)	2,371		2,242
Landfill assets	52,514		54,519
Buildings and improvements	158,705		147,285
Camp equipment	99,611		62,717
Vehicles	206,388		162,397
Equipment	675,494		537,937
Furniture and fixtures	3,700		2,293
Construction in progress	43,150		33,005
	1,274,715		1,034,049
Less—accumulated depreciation and amortization	426,439		378,655
Total property, plant and equipment, net	848,276		655,394
Other assets:
Long-term investments	5,311		5,437
Deferred financing costs	15,061		7,768
Goodwill	88,511		60,252
Permits and other intangibles, net of accumulated amortization of $67,035 and $60,633, respectively	127,068		114,400
Other	14,481		6,687
Total other assets	250,432		194,544
Total assets	$	1,965,080	$	1,602,475

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

1

CLEAN HARBORS, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS (Continued)

LIABILITIES AND STOCKHOLDERS’ EQUITY

(in thousands)

	June 30, 2011			December 31, 2010
	(unaudited)
Current liabilities:
Current portion of capital lease obligations	$	6,520		$	7,954
Accounts payable	156,106			136,978
Deferred revenue	28,462			30,745
Accrued expenses	118,716			116,089
Current portion of closure, post-closure and remedial liabilities	15,626			14,518
Total current liabilities	325,430			306,284
Other liabilities:
Closure and post-closure liabilities, less current portion of $6,313 and $5,849, respectively	28,595			32,830
Remedial liabilities, less current portion of $9,313 and $8,669, respectively	127,859			128,944
Long-term obligations	524,994			264,007
Capital lease obligations, less current portion	9,109			6,839
Unrecognized tax benefits and other long-term liabilities	91,725			82,744
Total other liabilities	782,282			515,364
Stockholders’ equity:
Common stock, $.01 par value:
Authorized 80,000,000; shares issued and outstanding 52,986,122 and 52,772,392 shares, respectively	530			528
Treasury stock	(4,274		)	(2,467		)
Shares held under employee participation plan	(777		)	(777		)
Additional paid-in capital	495,237			488,384
Accumulated other comprehensive income	70,366			50,759
Accumulated earnings	296,286			244,400
Total stockholders’ equity	857,368			780,827
Total liabilities and stockholders’ equity	$	1,965,080		$	1,602,475

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

2

CLEAN HARBORS, INC. AND SUBSIDIARIES

UNAUDITED CONSOLIDATED STATEMENTS OF INCOME

(in thousands except per share amounts)

	Three Months Ended June 30,						Six Months Ended June 30,
	2011			2010			2011			2010
Revenues	$	447,235		$	471,639		$	882,197		$	826,535
Cost of revenues (exclusive of items shown separately below)	307,754			324,280			620,331			584,697
Selling, general and administrative expenses	58,254			50,729			113,048			96,213
Accretion of environmental liabilities	2,407			2,602			4,796			5,304
Depreciation and amortization	26,936			22,105			52,396			44,779
Income from operations	51,884			71,923			91,626			95,542
Other income	2,868			2,708			5,767			3,154
Interest expense, net of interest income of $302 and $546 for the quarter and year-to-date ended 2011 and $165 and $267 for the quarter and year-to-date ended 2010, respectively	(10,642		)	(7,646		)	(17,120		)	(14,574		)
Income from continuing operations, before provision for income taxes	44,110			66,985			80,273			84,122
Provision for income taxes	14,954			11,468			28,387			18,557
Income from continuing operations	29,156			55,517			51,886			65,565
Income from discontinued operations, net of tax	—			2,412			—			2,794
Net income	$	29,156		$	57,929		$	51,886		$	68,359
Earnings per share:
Basic	$	0.55		$	1.10		$	0.98		$	1.30
Diluted	$	0.55		$	1.10		$	0.97		$	1.29
Weighted average common shares outstanding	52,939			52,581			52,869			52,542
Weighted average common shares outstanding plus potentially dilutive common shares	53,362			52,849			53,261			52,796

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

3

CLEAN HARBORS, INC. AND SUBSIDIARIES

UNAUDITED CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)

	Six Months Ended June 30,
	2011			2010
Cash flows from operating activities:
Net income	$	51,886		$	68,359
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	52,396			44,779
Allowance for doubtful accounts	402			833
Amortization of deferred financing costs and debt discount	898			1,475
Accretion of environmental liabilities	4,796			5,304
Changes in environmental liability estimates	(773		)	(3,893		)
Deferred income taxes	819			388
Stock-based compensation	2,880			3,107
Excess tax benefit of stock-based compensation	(1,617		)	(782		)
Income tax benefit related to stock option exercises	1,617			777
Gains on sales of businesses	—			(2,678		)
Other income	(2,413		)	(3,154		)
Environmental expenditures	(5,564		)	(4,717		)
Changes in assets and liabilities, net of acquisitions
Accounts receivable	18,063			(61,294		)
Other current assets	(5,252		)	(20,868		)
Accounts payable	(33,024		)	48,411
Other current liabilities	(9,485		)	21,270
Net cash from operating activities	75,629			97,317
Cash flows from investing activities:
Additions to property, plant and equipment	(65,460		)	(35,490		)
Acquisitions, net of cash acquired	(205,922		)	(13,751		)
Additions to intangible assets, including costs to obtain or renew permits	(1,066		)	(2,192		)
Proceeds from sales of marketable securities	388			2,575
Proceeds from sales of fixed assets and assets held for sale	4,891			15,594
Proceeds from insurance settlement	—			1,336
Proceeds from sale of long-term investments	—			1,300
Net cash used in investing activities	(267,169		)	(30,628		)
Cash flows from financing activities:
Change in uncashed checks	13,746			(3,600		)
Proceeds from exercise of stock options	783			318
Remittance of shares, net	(1,807		)	(113		)
Proceeds from employee stock purchase plan	1,556			1,187
Deferred financing costs paid	(8,099		)	(53		)
Payments on capital leases	(3,316		)	(1,752		)
Distribution of cash earned on employee participation plan	(189		)	(148		)
Excess tax benefit of stock-based compensation	1,617			782
Issuance of senior secured notes, including premium	261,250			—
Net cash from financing activities	265,541			(3,379		)
Effect of exchange rate change on cash	1,365			(1,556		)
Increase in cash and cash equivalents	75,366			61,754
Cash and cash equivalents, beginning of period	302,210			233,546
Cash and cash equivalents, end of period	$	377,576		$	295,300
Supplemental information:
Cash payments for interest and income taxes:
Interest paid	$	11,551		$	13,572
Income taxes paid	26,545			10,845
Non-cash investing and financing activities:
Property, plant and equipment accrued	$	24,586		$	4,738
Assets acquired through capital lease	—			9,418
Issuance of acquisition-related common stock, net	—			1,015

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

4

CLEAN HARBORS, INC. AND SUBSIDIARIES

UNAUDITED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY

(in thousands)

	Common Stock							Shares Held Under								Accumulated
	Number of Shares		$ 0.01 Par Value		Treasury Stock			Employee Participation Plan			Additional Paid-in Capital		Comprehensive Income			Other Comprehensive Income			Accumulated Earnings		Total Stockholders’ Equity
Balance at January 1, 2011	52,772		$	528	$	(2,467	)	$	(777	)	$	488,384				$	50,759		$	244,400	$	780,827
Net income	—		—		—			—			—		$	51,886		—			51,886		51,886
Change in fair value of available for sale securities, net of taxes	—		—		—			—			—		(791		)	(791		)	—		(791		)
Foreign currency translation	—		—		—			—			—		20,398			20,398			—		20,398
Total comprehensive income	—		—		—			—			—		$	71,493		—			—		—
Stock-based compensation	168		—		—			—			2,899					—			—		2,899
Issuance of restricted shares, net of shares remitted	(42	)	—		(1,807		)	—			—					—			—		(1,807		)
Exercise of stock options	40		2		—			—			781					—			—		783
Net tax benefit on exercise of stock options	—		—		—			—			1,617					—			—		1,617
Employee stock purchase plan	48		—		—			—			1,556					—			—		1,556
Balance at June 30, 2011	52,986		$	530	$	(4,274	)	$	(777	)	$	495,237				$	70,366		$	296,286	$	857,368

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

5

CLEAN HARBORS, INC. AND SUBSIDIARIES

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

(1) BASIS OF PRESENTATION

The accompanying consolidated interim financial statements include the accounts of Clean Harbors, Inc. and its subsidiaries (collectively, “Clean Harbors” or the “Company”) and have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”) and, in the opinion of management, include all adjustments which are of a normal recurring nature, necessary for a fair presentation of the financial position, results of operations, and cash flows for the periods presented. The results for interim periods are not necessarily indicative of results for the entire year or any other interim periods. The financial statements presented herein should be read in connection with the financial statements included in the Company’s Current Report on Form 8-K filed on July 15, 2011.

On June 8, 2011, the Company’s Board of Directors authorized a two-for-one stock split of the Company’s common stock in the form of a stock dividend of one share for each outstanding share. The stock dividend was payable on July 26, 2011 to holders of record at the close of business on July 6, 2011. The stock split followed the approval, at the Company’s 2011 annual meeting of stockholders, of a proposal to increase the Company’s authorized shares of common stock from 40 million to 80 million. The stock split did not change the proportionate interest that a stockholder maintained in the Company. All share and per share information, including options, restricted and performance stock awards, stock option exercises, employee stock purchase plan purchases, common stock and additional paid-in capital accounts on the consolidated balance sheets and consolidated statements of income and stockholders’ equity, have been retroactively adjusted to reflect the two-for-one stock split. In addition, awards granted and weighted average fair value of awards granted in Note 12, “Stock-Based Compensation,” have also been retroactively adjusted.

During the quarter ended March 31, 2011, the Company re-aligned its management reporting structure. Under the new structure, the Company’s operations are managed in four segments: Technical Services, Field Services, Industrial Services and Oil and Gas Field Services. The new segment, Oil and Gas Field Services, consists of the previous Exploration Services segment, as well as certain departments that were re-assigned from the Industrial Services segment. In addition, certain departments from the Field Services segment were re-assigned to the Industrial Services segment. Accordingly, the Company re-aligned and re-allocated departmental costs being allocated among the segments to support these management reporting changes. The Company has recast the segment information to conform to the current year presentation. See Note 14, “Segment Reporting.”

The four operating segments consist of:

·Technical Services — provides a broad range of hazardous material management services including the packaging, collection, transportation, treatment and disposal of hazardous and non-hazardous waste at Company owned incineration, landfill, wastewater, and other treatment facilities.

·Field Services — provides a wide variety of environmental cleanup services on customer sites or other locations on a scheduled or emergency response basis including tank cleaning, decontamination, remediation, and spill cleanup.

·Industrial Services — provides industrial and specialty services, such as high-pressure and chemical cleaning, catalyst handling, decoking, material processing, surface rentals and industrial lodging services to refineries, chemical plants, oil sands facilities, pulp and paper mills, and other industrial facilities.

·Oil and Gas Field Services — provides fluid handling, fluid hauling, down hole servicing, surface rentals, exploration, mapping and directional boring services to the energy sector serving oil and gas exploration, production, and power generation.

Technical Services and Field Services are included as part of Clean Harbors Environmental Services, and Industrial Services and Oil and Gas Field Services are included as part of Clean Harbors Energy and Industrial Services.

6

(2) SIGNIFICANT ACCOUNTING POLICIES

The accompanying unaudited consolidated financial statements of the Company reflect the application of certain new or updated significant accounting policies as described below:

Property, Plant and Equipment (excluding landfill assets)

Property, plant and equipment are stated at cost and include amounts capitalized under capital lease obligations. Expenditures for major renewals and improvements which extend the life of the asset are capitalized. Items of an ordinary repair or maintenance nature are charged directly to operating expense as incurred. During the construction and development period of an asset, the costs incurred, including applicable interest costs, are classified as construction-in-progress. Interest in the amount of $0.4 million and $0.2 million was capitalized to fixed assets during the six months ended June 30, 2011, and 2010, respectively. Depreciation and amortization expense was $42.0 million and $35.9 million for the six months ended June 30, 2011, and 2010, respectively.

The Company depreciates and amortizes the cost of these assets, using the straight-line method as follows:

Asset Classification	Estimated Useful Life
Buildings and building improvements
Buildings	30—40 years
Land, leasehold and building improvements	5—40 years
Camp equipment	12—15 years
Vehicles	3—12 years
Equipment
Capitalized software and computer equipment	3 years
Solar equipment	20 years
Containers and railcars	15—20 years
All other equipment	3—10 years
Furniture and fixtures	5—8 years

Land, leasehold and building improvements have a weighted average life of 9.3 years.

Camp equipment consists of industrial lodging facilities that are utilized in the Company’s Industrial Services segment to provide lodging services to companies in the refinery and petrochemical industries.

Solar equipment consists of a solar array that is used to provide electric power for a continuously operating groundwater decontamination pump and treatment system at a closed and capped landfill located in New Jersey. The solar array was installed and became operable during the second quarter of 2011.

The Company recognizes an impairment in the carrying value of long-lived assets when the expected future undiscounted cash flows derived from the assets are less than their carrying value. For the three and six months ended June 30, 2011, and 2010, the Company has not recorded impairment charges related to long-lived assets.

Recent Accounting Pronouncements

From time to time, new accounting pronouncements are issued by the Financial Accounting Standards Board (“FASB”) and are adopted by the Company as of the specified effective dates.  Unless otherwise discussed below, management believes that the impact of recently issued accounting pronouncements will not have a material impact on the Company’s financial position, results of operations and cash flows, or do not apply to the Company’s operations.

In 2009, the FASB issued Accounting Standards Update (ASU) 2009-13, Revenue Recognition (Topic 605)—Multiple-Deliverable Revenue Arrangements, or ASU 2009-13 which provides additional guidance on the recognition of revenue from multiple element arrangements. ASU 2009-13 states that if vendor specific objective evidence or third party evidence for deliverables in an arrangement cannot be determined, companies are required to develop a best estimate of the selling price for separate deliverables and allocate arrangement consideration using the relative selling price method. This guidance is effective for fiscal years beginning after June 15, 2010 and may be applied prospectively to new or materially modified arrangements after the effective date or retrospectively. The Company adopted ASU 2009-13 prospectively as of January 1, 2011 and although the adoption did not materially impact its financial condition, results of operations, or cash flow, this guidance may impact the Company’s determination of the separation of deliverables for future arrangements.

7

In June 2011, the FASB issued ASU 2011-5 Comprehensive Income (Topic 220) — Presentation of Comprehensive Income. The new guidance revises the manner in which entities present comprehensive income in their financial statements. ASU 2011-5 requires entities to report components of comprehensive income in either (1) a continuous statement of comprehensive income or (2) two separate but consecutive statements. The ASU does not change the items that must be reported in other comprehensive income. This guidance will require a change in the presentation of the financial statements and will require retrospective application.  The Company will adopt this guidance as of January 2012 and has not determined which approach it will adopt.

(3) BUSINESS COMBINATIONS

Peak

On June 10, 2011, the Company acquired 100% of the outstanding common shares of Peak Energy Services Ltd. (“Peak”) (other than the 3.15% of Peak’s outstanding common shares which the Company already owned) in exchange for approximately CDN $158.7 million in cash (CDN $0.95 for each Peak share) and the assumption and payment of Peak net debt of approximately CDN $37.5 million. The total acquisition price, which includes the previous investment in Peak shares referred to above, was approximately CDN $200.2 million, or U.S. $205.1 million based on an exchange rate of 0.976057 CDN $ to one U.S. $ on June 10, 2011.

Peak is a diversified energy services corporation headquartered in Calgary, Alberta, operating in western Canada and the U.S. Through its various operating divisions, Peak provides drilling and production equipment and services to its customers in the conventional and unconventional oil and natural gas industries as well as the oil sands region of western Canada. Peak also provides water technology solutions to a variety of customers throughout North America. Peak employs approximately 900 people. Peak shares previously traded on the Toronto Stock Exchange under the symbol “PES.” The Company anticipates that this acquisition will expand its presence in the energy services marketplace, particularly in the area of oil and natural gas drilling and production support. The Peak business has been integrated within the Oil and Gas Field Services and Industrial Services segments of the Company’s operations and reporting structure.

The following table summarizes the preliminary purchase price for Peak at the acquisition date (in thousands of U.S. dollars).

Cash paid for Peak common shares	$	162,585
Fair value of previously owned common shares (1)	4,117
Peak net debt assumed (2)	38,431
Total estimated purchase price	$	205,133

(1)The Company previously owned a 3.15% interest in Peak which was recorded in marketable securities. On June 10, 2011, the Company acquired the remaining outstanding shares of Peak and as a result, the Company remeasured the fair value of its previously held common shares and recognized the resulting gain of $1.9 million in other income. The unrealized gain on the Peak investment was previously recorded in accumulated other comprehensive income. For this purpose, the fair value of the Company’s previous investment in Peak was deemed to be $4.1 million, calculated based on the closing price of Peak’s shares on the Toronto Stock Exchange on the date before the acquisition was publicly announced.

(2)   The outstanding Peak debt, net of $15.7 million of cash assumed, which consisted of three term loan facilities, was paid off on June 10, 2011.

Acquisition related costs of $0.6 million and $0.7 million were included in selling, general and administrative expenses in the Company’s consolidated statements of income for the three and six months ended June 30, 2011, respectively.

The following table summarizes the recognized amounts of identifiable assets acquired and liabilities assumed (in thousands). The fair value of all the acquired identifiable assets and liabilities summarized below is provisional pending finalization of the Company’s acquisition accounting.  Final determination of the fair value may result in further adjustments to the values presented below.

	Asset (Liability)
Current assets (i)	$	45,797
Property, plant and equipment	149,344
Identifiable intangible assets	14,107
Other assets	8,800
Current liabilities	(27,717		)
Other liabilities	(8,344		)
Total identifiable net assets	$	181,987
Goodwill (ii)	23,146
Total	$	205,133

8

(i)The preliminary fair value of the financial assets acquired includes customer receivables with a preliminary fair value of $33.4 million. The gross amount due was $35.3 million.

(ii)Goodwill, which is attributable to expected operating and cross-selling synergies, is not expected to be deductible for tax purposes. Goodwill of $9.3 million and $13.8 million has been recorded in the Oil and Gas Field Services and Industrial Services segments, respectively; however, the amount and the allocation are subject to change pending the finalization of the Company’s valuation.

The Company has determined that the separate disclosure of Peak’s earnings is impracticable for the three and six months ended June 30, 2011 due to the integration of Peak operations into the Company upon acquisition. Revenues attributable to Peak included in the Company’s consolidated statements of income for the three and six months ended June 30, 2011 were $9.6 million.

The following unaudited pro forma combined summary data presents information as if Peak had been acquired at the beginning of 2010 and assumes that there was nothing that is considered a material, non-recurring pro forma adjustment directly attributable to the acquisition. The pro forma information does not necessarily reflect the actual results that would have occurred had the Company and Peak been combined during the periods presented, nor is it necessarily indicative of the future results of operations of the combined companies (in thousands).

	Three months ended June 30,		Six months ended June 30,
	2010		2010
Pro forma combined revenues	$	494,359	$	881,916
Pro forma combined net income	$	56,488	$	69,148

Status of Proposed Acquisition of Badger

The Company entered on January 25, 2011 into a definitive agreement to acquire Badger Daylighting Ltd. (“Badger”), an Alberta corporation headquartered in Calgary, Alberta. Under the terms of the acquisition agreement, a condition to the respective obligations of each of the Company and Badger to complete the transaction was approval of the transaction by a required affirmative vote of at least 66 2/3 % of Badger’s shareholders and option holders voting on the matter. At a meeting held on April 26, 2011, the Badger shareholders and option holders failed to approve the transaction by the required vote. In accordance with the terms of the acquisition agreement, the Company terminated the agreement on April 26, 2011. The acquisition agreement provided that if the Company terminated the agreement because of a failure by the Badger shareholders and option holders to approve the transaction by the required vote, Badger was obligated to reimburse the Company’s out of pocket expenses incurred in connection with the proposed transaction including the financing thereof, up to a maximum of CDN $1.5 million. Based on a demand letter sent to Badger in May 2011, the Company received U.S. $1.1 million from Badger in June for reimbursement in accordance with this provision of the agreement.

(4) FAIR VALUE MEASUREMENTS

The Company’s financial instruments consist of cash and cash equivalents, marketable securities, receivables, trade payables, auction rate securities and long-term debt. The estimated fair value of cash and cash equivalents, receivables, and trade payables approximate their carrying value due to the short maturity of these instruments. As of June 30, 2011, the Company held certain marketable securities and auction rate securities that are required to be measured at fair value on a recurring basis. The fair value of marketable securities is recorded based on quoted market prices. The auction rate securities are classified as available for sale and the fair value of these securities as of June 30, 2011 was estimated utilizing a discounted cash flow analysis. The discounted cash flow analysis considered, among other items, the collateralization underlying the security investments, the creditworthiness of the counterparty, the timing of expected future cash flows, and the expectation of the next time these securities are expected to have a successful auction. The auction rate securities were also compared, when possible, to other observable market data with similar characteristics to the securities held by the Company.

As of June 30, 2011, all of the Company’s auction rate securities continue to have AAA underlying ratings. The underlying assets of the Company’s auction rate securities are student loans, which are substantially insured by the Federal Family Education Loan Program. The Company attributes the $0.4 million decline in the fair value of the securities from the original cost basis to external liquidity issues rather than credit issues. The Company assessed the decline in value to be temporary because it does not intend to sell and it is more likely than not that the Company will not have to sell the securities before their maturity.

9

During the six months ended June 30, 2011 and 2010, the Company recorded an unrealized pre-tax loss of $0.1 million and a pre-tax gain of $0.1 million, respectively, on its auction rate securities, which was included in accumulated other comprehensive income. As of June 30, 2011, the Company continued to earn interest on its auction rate securities according to their stated terms with interest rates resetting generally every 28 days.

The Company’s assets measured at fair value on a recurring basis subject to the disclosure requirements at June 30, 2011 and December 31, 2010 were as follows (in thousands):

	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Balance at June 30, 2011
Auction rate securities	$	—	$	—	$	5,311	$	5,311
Marketable securities	$	128	$	—	$	—	$	128

	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Balance at December 31, 2010
Auction rate securities	$	—	$	—	$	5,437	$	5,437
Marketable securities	$	3,174	$	—	$	—	$	3,174

The decrease in marketable securities since December 31, 2010 was primarily due to the Peak acquisition on June 10, 2011. The Company previously owned a 3.15% interest in Peak which was recorded in marketable securities.

The following tables present the changes in the Company’s auction rate securities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) during the three and six months ended June 30, 2011 and 2010 (in thousands):

	Three Months Ended June 30,
	2011			2010
Balance at April 1,	$	5,379		$	6,503
Sale of auction rate securities	—			(1,300		)
Unrealized (losses) gains included in other comprehensive income	(68		)	112
Balance at June 30,	$	5,311		$	5,315

	Six Months Ended June 30,
	2011			2010
Balance at January 1,	$	5,437		$	6,503
Sale of auction rate securities	—			(1,300		)
Unrealized (losses) gains included in other comprehensive income	(126		)	112
Balance at June 30,	$	5,311		$	5,315

(5) GOODWILL AND OTHER INTANGIBLE ASSETS

The changes to goodwill for the six months ended June 30, 2011 were as follows (in thousands):

	2011
Balance at January 1, 2011	$	60,252
Acquired from acquisitions	27,062
Foreign currency translation	1,197
Balance at June 30, 2011	$	88,511

10

The increase in goodwill during the six months ended June 30, 2011 was primarily attributed to the acquisition of Peak.  The goodwill related to Peak includes estimates that are subject to change based upon final fair value determinations. Below is a summary of amortizable other intangible assets (in thousands):

	June 30, 2011							December 31, 2010
	Cost		Accumulated Amortization		Net		Weighted Average Amortization Period (in years)	Cost		Accumulated Amortization		Net		Weighted Average Amortization Period (in years)
Permits	$	105,748	$	44,464	$	61,284	17.7	$	103,493	$	42,430	$	61,063	15.9
Customer relationships	69,781		14,008		55,773		7.0	58,322		10,418		47,904		8.0
Other intangible assets	18,574		8,563		10,011		4.1	13,218		7,785		5,433		3.5
	$	194,103	$	67,035	$	127,068	9.4	$	175,033	$	60,633	$	114,400	9.7

The aggregate amortization expense for the three and six months ended June 30, 2011 was $2.9 million and $5.8 million, respectively.

The increase in customer relationships and other intangible assets was primarily attributed to the acquisition of Peak. Amounts are provisional and subject to change upon completion of final valuations. The total amounts assigned and the weighted average amortization period by major intangible asset classes as it relates to the Peak acquisition are as follows:

	Total Amount Assigned		Weighted Average Amortization Period (in years)
Customer relationships	$	10,020	5.3
Other intangibles	4,258		6.0
	$	14,278	5.0

Below is the expected future amortization for the net carrying amount of finite lived intangible assets at June 30, 2011 (in thousands):

Years Ending December 31,	Expected Amortization
2011 (six months)	$	8,607
2012	14,076
2013	13,246
2014	12,597
2015	12,047
Thereafter	66,495
	$	127,068

11

(6) ACCRUED EXPENSES

Accrued expenses consisted of the following (in thousands):

	June 30, 2011		December 31, 2010
Insurance	$	20,852	$	19,736
Interest	15,149		7,826
Accrued disposal costs	2,123		2,173
Accrued compensation and benefits	39,115		44,545
Income, real estate, sales and other taxes	16,776		19,529
Other	24,701		22,280
	$	118,716	$	116,089

(7) CLOSURE AND POST-CLOSURE LIABILITIES

The changes to closure and post-closure liabilities (also referred to as “asset retirement obligations”) for the six months ended June 30, 2011 were as follows (in thousands):

	Landfill Retirement Liability			Non-Landfill Retirement Liability			Total
Balance at January 1, 2011	$	29,756		$	8,923		$	38,679
New asset retirement obligations	1,169			—			1,169
Accretion	1,100			554			1,654
Changes in estimates recorded to statement of income	(400		)	29			(371		)
Other changes in estimates recorded to balance sheet	(4,681		)	121			(4,560		)
Settlement of obligations	(1,467		)	(306		)	(1,773		)
Currency translation and other	91			19			110
Balance at June 30, 2011	$	25,568		$	9,340		$	34,908

All of the landfill facilities included in the above were active as of June 30, 2011.

New asset retirement obligations incurred in 2011 are being discounted at the credit-adjusted risk-free rate of 8.79% and inflated at a rate of 1.01%.

(8) REMEDIAL LIABILITIES

The changes to remedial liabilities for the six months ended June 30, 2011 were as follows (in thousands):

	Remedial Liabilities for Landfill Sites			Remedial Liabilities for Inactive Sites			Remedial Liabilities (Including Superfund) for Non-Landfill Operations			Total
Balance at January 1, 2011	$	5,511		$	82,354		$	49,748		$	137,613
Accretion	134			1,888			1,120			3,142
Changes in estimates recorded to statement of income	(8		)	271			(665		)	(402		)
Settlement of obligations	(31		)	(1,801		)	(1,959		)	(3,791		)
Currency translation and other	96			6			508			610
Balance at June 30, 2011	$	5,702		$	82,718		$	48,752		$	137,172

12

(9) FINANCING ARRANGEMENTS

The following table is a summary of the Company’s financing arrangements (in thousands):

	June 30, 2011		December 31, 2010
Senior secured notes, at 7.625%, due August 15, 2016	$	520,000	$	270,000
Revolving credit facility, due May 31, 2016	—		—
Unamortized notes premium and discount, net	4,994		(5,993		)
Long-term obligations	$	524,994	$	264,007

On May 31, 2011, the Company increased its previous $120.0 million revolving credit facility to a $250.0 million revolving credit facility (described below).

As of December 31, 2010, the Company had outstanding $270.0 million aggregate principal amount of 7.625% senior secured notes due 2016.  On March 24, 2011, the Company issued an additional $250.0 million aggregate principal amount of such notes (the “new notes”).  Under the purchase agreement, the new notes were priced for purposes of resale at 104.5% of the aggregate principal amount, representing an effective yield to maturity of 6.132%. In addition to such 104.5% purchase price, the purchase price paid to the Company for the new notes also included interest accrued on the new notes from and including February 15, 2011. The net proceeds from the issuance and sale of the new notes, after deducting the initial purchasers’ discount and estimated other transaction expenses, were approximately $255.6 million.

The new notes and the $270.0 million of notes issued on the initial issue date are treated as a single class for all purposes including, without limitation, waivers, amendments, redemptions and other offers to purchase. The new notes and the notes issued on the initial issue date are referred to in this report collectively as the “notes” or the “senior secured notes.”

The principal terms of the notes are as follows:

Senior Secured Notes.  The notes will mature on August 15, 2016.  The notes bear interest at a rate of 7.625% per annum. Interest is payable semi-annually on February 15 and August 15 of each year. The notes were issued pursuant to an indenture dated as of August 14, 2009 (as supplemented from time to time, the “indenture”) among the Company, as issuer, the Company’s domestic subsidiaries, as guarantors, and U.S. Bank National Association, as trustee and notes collateral agent.

The fair value of the Company’s currently outstanding notes is based on quoted market prices and was $538.3 million at June 30, 2011 and $278.3 million at December 31, 2010.

The Company may redeem some or all of the notes at any time on or after August 15, 2012 at the following redemption prices (expressed as percentages of the principal amount) if redeemed during the twelve-month period commencing on August 15 of the year set forth below, plus, in each case, accrued and unpaid interest, if any, to the date of redemption:

Year	Percentage
2012	103.813	%
2013	101.906	%
2014 and thereafter	100.000	%

At any time on or after September 29, 2011 but prior to August 15, 2012, the Company may also redeem up to 10% of the original aggregate principal amount of the notes at a redemption price of 103% of the principal amount, plus any accrued and unpaid interest. Prior to August 15, 2012, the Company may also redeem up to 35% of the aggregate principal amount of the notes at a redemption price of 107.625% of the principal amount, plus any accrued and unpaid interest, using proceeds from certain equity offerings, and may also redeem some or all of the senior secured notes at a redemption price of 100% of the principal amount plus a make-whole premium and any accrued and unpaid interest. Holders may require the Company to repurchase the notes at a purchase price equal to 101% of the principal amount, plus any accrued and unpaid interest, upon a change of control of the Company.

The notes are guaranteed by substantially all the Company’s current and future domestic restricted subsidiaries. The notes are the Company’s and the guarantors’ senior secured obligations ranking equally, subject to the lien priorities summarized below, with all of the Company’s and the guarantors’ existing and future senior obligations (including obligations under the Company’s credit agreement) and senior to any future indebtedness that is expressly subordinated to the senior secured notes and the guarantees. The notes and the guarantees are secured by a first lien on substantially all of the assets of the Company and its domestic restricted

13

subsidiaries (the “Notes Collateral”), except for accounts receivable, related general intangibles and instruments and proceeds related thereto (the “ABL Collateral”) and certain other excluded collateral as provided in the indenture and subject to certain exceptions and permitted liens. The notes and the guarantees are also secured by a second lien on the ABL Collateral that, along with a second lien on the Notes Collateral, secure the Company’s obligations under its “ABL facility” under its revolving credit agreement. The notes are not guaranteed by, or secured by the assets of, the Company’s Canadian or other foreign subsidiaries.

If the Company or its domestic subsidiaries sell assets under specified circumstances, the Company must offer to repurchase the senior secured notes from certain of the net proceeds of such sale at a purchase price equal to 100% of the principal amount, plus any accrued and unpaid interest, to the applicable repurchase date.

In connection with the issuance of the new notes, the Company and the guarantors entered into a registration rights agreement dated March 24, 2011, with the initial purchasers. Under such agreement, the Company and the guarantors were required to file with the SEC an exchange offer registration statement and use reasonable best efforts to cause the exchange offer to be consummated within 180 days following the sale of the new notes, thereby enabling holders to exchange the new notes for registered notes with terms substantially identical to the terms of the new notes. Under specified circumstances, including if the exchange offer would not be permitted by applicable law or SEC policy, the registration rights agreement would require that the Company and the guarantors file a shelf registration statement and use reasonable best efforts to have such registration statement declared effective within 90 days following the event giving rise to the requirement to file the shelf registration statement for the resale of the new notes. If the Company and the guarantors should default on their registration obligations under the registration rights agreement, additional interest (referred to as special interest), up to a maximum amount of 1.0% per annum, would become payable on the new notes until all such registration defaults are cured. The Company filed on July 15, 2011 an exchange offer registration statement, which the SEC made effective on July 27, 2011. The Company commenced the exchange offer on August 1, 2011, and the exchange offer is now scheduled to be consummated on or about August 30, 2011.

Revolving Credit Facility. On May 31, 2011, the Company entered into an amendment and restatement of the previously existing revolving credit facility with Bank of America, N.A. (“BofA”), as agent for the lenders under the facility.  The principal changes to the terms of the facility were to:

(i) increase the maximum amount of borrowings and letters of credit which the Company may obtain under the facility from $120.0 million to $150.0 million (with a $140.0 million sub-limit for letters of credit);

(ii) add one of the Company’s Canadian subsidiaries (the “Canadian Borrower”) as a party to the facility and allow the Canadian Borrower to obtain up to $100.0 million of borrowings and letters of credit (with a $75.0 million sub-limit for letters of credit), with the obligations of the Canadian Borrower under the facility secured by a first lien on the accounts receivable of the  Canadian Borrower and the Company’s other Canadian subsidiaries, and the Company and its U.S. subsidiaries guaranteeing the obligations of the Canadian Borrower but the Canadian Borrower and the Company’s other Canadian subsidiaries having no guarantee or other responsibility for the obligations of the Company or its U.S. subsidiaries under the facility;

(iii) reduce the interest rate on borrowings under the facility, in the case of LIBOR loans, from LIBOR plus an applicable margin ranging (based on the level of the Company’s fixed charge coverage ratio for the most recently completed four fiscal quarter measurement period) from 2.25% to 2.75% per annum to LIBOR plus an applicable margin ranging from 1.75% to 2.25% per annum and, in the case of base rate loans, from BofA’s base rate plus an applicable margin ranging from 1.25% to 1.75% per annum to BofA’s base rate plus an applicable margin ranging from 0.75% to 1.25% per annum; and

(iv)  extend the term of the facility so that it will expire on the first to occur of (a) May 31, 2016 or (b) 60 days prior to the maturity of the Company’s outstanding senior secured notes on August 15, 2016 if the notes have not by then been refinanced, defeased or reserved against the borrowing base on terms reasonably acceptable to the agent under the amended and restated credit agreement.

The financing arrangements and principal terms of the revolving credit facility are discussed further in the Company’s Current Report on Form 8-K filed on July 15, 2011. There have been no material changes in such terms other than those noted above during the first six months of 2011.

(10) INCOME TAXES

The Company’s effective tax rate (including taxes on income from discontinued operations) for the three and six months ended June 30, 2011 was 33.9 percent and 35.4 percent, respectively, compared to 17.7 percent and 22.4 percent, respectively, for the same periods in 2010. The increase in the effective tax rate for the six months ended June 30, 2011 was primarily attributable to the decrease in unrecognized tax benefits recorded in the second quarter of 2010. Excluding this discrete item, the rate decreased by 2.4%

14

as compared to the six months ended June 30, 2010, primarily due to the increased profits attributable to Canada, which has a lower corporate income tax rate as compared to the United States, and the recording of an energy investment tax credit for a solar energy project placed in service.

As of June 30, 2011, the Company’s unrecognized tax benefits and related reserves were $67.5 million, which included $21.3 million of interest and $6.6 million of penalties. As of December 31, 2010, the Company’s unrecognized tax benefits and related reserves were $65.9 million, which included $19.7 million of interest and $6.5 million of penalties.

Due to expiring statute of limitation periods, the Company anticipates that total unrecognized tax benefits and related reserves, other than adjustments for additional accruals for interest and penalties and foreign currency translation, will decrease by approximately $6.3 million within the next twelve months.  The $6.3 million (which includes interest and penalties of $2.7 million) is primarily related to a historical Canadian business combination and, if realized, will be recorded in earnings and therefore will impact the effective income tax rate.

(11) EARNINGS PER SHARE

The following is a reconciliation of basic and diluted earnings per share computations (in thousands except for per share amounts):

	Three Months Ended June 30,				Six Months Ended June 30,
	2011		2010		2011		2010
Numerator for basic and diluted earnings per share:
Income from continuing operations	$	29,156	$	55,517	$	51,886	$	65,565
Income from discontinued operations	—		2,412		—		2,794
Net income	$	29,156	$	57,929	$	51,886	$	68,359
Denominator:
Basic shares outstanding	52,939		52,581		52,869		52,542
Dilutive effect of equity-based compensation awards	423		268		392		254
Dilutive shares outstanding	53,362		52,849		53,261		52,796
Basic earnings per share:
Income from continuing operations	$	0.55	$	1.05	$	0.98	$	1.25
Income from discontinued operations, net of tax	—		0.05		—		0.05
Net income	$	0.55	$	1.10	$	0.98	$	1.30
Diluted earnings per share:
Income from continuing operations	$	0.55	$	1.05	$	0.97	$	1.24
Income from discontinued operations, net of tax	—		0.05		—		0.05
Net income	$	0.55	$	1.10	$	0.97	$	1.29

All shares and per share amounts included in the above table have been adjusted for the two-for-one stock split discussed in Note 1, “Basis of Presentation.” For the three- and six-month periods ended June 30, 2011, the dilutive effect of all then outstanding options, restricted stock and performance awards is included in the above calculations except as follows. For the three- and six-month periods ended June 30, 2011, the above calculation excluded the dilutive effects of 70 thousand outstanding performance stock awards for which the performance criteria were not attained at that time.  For the three- and six-month periods ended June 30, 2010, the above calculation excluded the dilutive effects of 294 thousand outstanding performance stock awards for which the performance criteria were not attained at that time and 36 thousand options that were not then in-the-money.

15

(12) STOCK-BASED COMPENSATION

The following table summarizes the total number and type of awards granted during the three- and six-month periods ended June 30, 2011, as well as the related weighted-average grant-date fair values:

	Three and Six Months Ended June 30, 2011
	Shares	Weighted- Average Grant-Date Fair Value
Restricted stock awards	154,214	$	48.43
Performance stock awards	69,948	$	48.13
Total awards	224,162

All shares and weighted-average grant date fair values included in the above table have been adjusted for the two-for-one stock split discussed in Note 1, “Basis of Presentation.” Certain performance stock awards granted in June 2011 are subject to both achieving predetermined revenue and EBITDA targets for a specified period of time and service conditions.  As of June 30, 2011, based on year-to-date results of operations, management did not believe that it was probable that the performance targets, which must be attained by December 31, 2012, would be achieved and as a result, no expense was recorded during the three and six months ended June 30, 2011 related to the 2011 performance stock awards.

(13) COMMITMENTS AND CONTINGENCIES

Legal and Administrative Proceedings

The Company’s waste management services are regulated by federal, state, provincial and local laws enacted to regulate discharge of materials into the environment, remediation of contaminated soil and groundwater or otherwise protect the environment. This ongoing regulation results in the Company frequently becoming a party to legal or administrative proceedings involving all levels of governmental authorities and other interested parties. The issues involved in such proceedings generally relate to applications for permits and licenses by the Company and conformity with legal requirements, alleged violations of existing permits and licenses, or alleged responsibility arising under federal or state Superfund laws to remediate contamination at properties owned either by the Company or by other parties (“third party sites”) to which either the Company or prior owners of certain of the Company’s facilities shipped wastes.

At June 30, 2011 and December 31, 2010, the Company had recorded reserves of $29.6 million and $29.7 million, respectively, in the Company’s financial statements for actual or probable liabilities related to the legal and administrative proceedings in which the Company was then involved, the principal of which are described below. At June 30, 2011 and December 31, 2010, the Company also believed that it was reasonably possible that the amount of these potential liabilities could be as much as $2.7 million and $2.8 million more, respectively. The Company periodically adjusts the aggregate amount of these reserves when these actual or probable liabilities are paid or otherwise discharged, new claims arise, or additional relevant information about existing or probable claims becomes available. As of June 30, 2011, the $29.6 million of reserves consisted of (i) $27.5 million related to pending legal or administrative proceedings, including Superfund liabilities, which were included in remedial liabilities on the consolidated balance sheets and (ii) $2.1 million primarily related to federal and state enforcement actions, which were included in accrued expenses on the consolidated balance sheets.

As of June 30, 2011, the principal legal and administrative proceedings in which the Company was involved, or which had been terminated during 2011, were as follows:

Ville Mercier.  In September 2002, the Company acquired the stock of a subsidiary (the “Mercier Subsidiary”) which owns a hazardous waste incinerator in Ville Mercier, Quebec (the “Mercier Facility”). The property adjacent to the Mercier Facility, which is also owned by the Mercier Subsidiary, is now contaminated as a result of actions dating back to 1968, when the Government of Quebec issued to a company unrelated to the Mercier Subsidiary two permits to dump organic liquids into lagoons on the property. By 1972, groundwater contamination had been identified, and the Quebec government provided an alternate water supply to the municipality of Ville Mercier.

In 1999, Ville Mercier and three neighboring municipalities filed separate legal proceedings against the Mercier Subsidiary and the Government of Quebec. The lawsuits assert that the defendants are jointly and severally responsible for the contamination of groundwater in the region, which they claim caused each municipality to incur additional costs to supply drinking water for their citizens since the 1970’s and early 1980’s. The four municipalities claim a Canadian dollar (“CDN”) total of $1.6 million as damages

16

for additional costs to obtain drinking water supplies and seek an injunctive order to obligate the defendants to remediate the groundwater in the region. The Quebec Government also sued the Mercier Subsidiary to recover approximately $17.4 million (CDN) of alleged past costs for constructing and operating a treatment system and providing alternative drinking water supplies.

On September 26, 2007, the Quebec Minister of Sustainable Development, Environment and Parks issued a Notice pursuant to Section 115.1 of the Environment Quality Act, superseding Notices issued in 1992, which are the subject of the pending litigation. The more recent Notice notifies the Mercier Subsidiary that, if the Mercier Subsidiary does not take certain remedial measures at the site, the Minister intends to undertake those measures at the site and claim direct and indirect costs related to such measures. The Mercier Subsidiary continues to assert that it has no responsibility for the groundwater contamination in the region and will contest any action by the Ministry to impose costs for remedial measures on the Mercier Subsidiary. The Company also continues to pursue settlement options. At June 30, 2011 and December 31, 2010, the Company had accrued $14.3 million and $13.5 million, respectively, for remedial liabilities relating to the Ville Mercier legal proceedings. The increase resulted primarily from a foreign exchange rate adjustment due to the strengthening of the Canadian dollar and interest accretion.

CH El Dorado.  In August 2006, the Company purchased all of the outstanding membership interests in Teris LLC (“Teris”) and changed the name of Teris to Clean Harbors El Dorado, LLC (“CH El Dorado”). At the time of the acquisition, Teris was, and CH El Dorado now is, involved in certain legal proceedings arising from a fire on January 2, 2005, at the incineration facility owned and operated by Teris in El Dorado, Arkansas.

CH El Dorado is defending vigorously the claims asserted against Teris in those proceedings, and the Company believes that the resolution of those proceedings related to the fire will not have a material adverse effect on the Company’s financial position, results of operations or cash flows. In addition to CH El Dorado’s defenses to the lawsuits, the Company will be entitled to rely upon an indemnification from the seller of the membership interests in Teris which is contained in the purchase agreement for those interests. Under that agreement, the seller agreed to indemnify (without any deductible amount) the Company against any damages which the Company might suffer as a result of the lawsuits to the extent that such damages are not fully covered by insurance or the reserves which Teris had established on its books prior to the acquisition. The seller’s parent also guaranteed the indemnification obligation of the seller to the Company.

Deer Trail, Colorado Facility.  Since April 5, 2006, the Company has been involved in various legal proceedings which have arisen as a result of the issuance by the Colorado Department of Public Health and Environment (“CDPHE”) of a radioactive materials license (“RAD License”) to a Company subsidiary, Clean Harbors Deer Trail, LLC (“CHDT”) to accept certain low level radioactive materials known as “NORM/TENORM” wastes for disposal. Adams County, the county where the CHDT facility is located, filed two suits against the CDPHE in Colorado effectively seeking to invalidate the license. The two suits filed in 2006 were both dismissed and those dismissals were upheld by the Colorado Court of Appeals. Adams County appealed those rulings to the Colorado Supreme Court which ruled on October 13, 2009 on the procedural issue that the County did have standing to challenge the license in district court and remanded the case back to that court for further proceedings. Adams County filed a third suit directly against CHDT in 2007 again attempting to invalidate the license. That suit was dismissed on November 14, 2008, and Adams County has now appealed that dismissal to the Colorado Court of Appeals. The Company continues to believe that the grounds asserted by the County are factually and legally baseless and has contested the appeal vigorously. The Company has not recorded any liability for this matter on the basis that such liability is currently neither probable nor estimable.

Superfund Proceedings

The Company has been notified that either the Company or the prior owners of certain of the Company’s facilities for which the Company may have certain indemnification obligations have been identified as potentially responsible parties (“PRPs”) or potential PRPs in connection with 62 sites which are subject to or are proposed to become subject to proceedings under federal or state Superfund laws. Of the 62 sites, two involve facilities that are now owned by the Company and 60 involve third party sites to which either the Company or the prior owners shipped wastes. In connection with each site, the Company has estimated the extent, if any, to which it may be subject, either directly or as a result of any such indemnification provisions, for cleanup and remediation costs, related legal and consulting costs associated with PRP investigations, settlements, and related legal and administrative proceedings. The amount of such actual and potential liability is inherently difficult to estimate because of, among other relevant factors, uncertainties as to the legal liability (if any) of the Company or the prior owners of certain of the Company’s facilities to contribute a portion of the cleanup costs, the assumptions that must be made in calculating the estimated cost and timing of remediation, the identification of other PRPs and their respective capability and obligation to contribute to remediation efforts, and the existence and legal standing of indemnification agreements (if any) with prior owners, which may either benefit the Company or subject the Company to potential indemnification obligations.

The Company’s potential liability for cleanup costs at the two facilities now owned by the Company and at 35 (the “Listed Third Party Sites”) of the 60 third party sites arose out of the Company’s 2002 acquisition of substantially all of the assets (the “CSD

17

assets”) of the Chemical Services Division of Safety-Kleen Corp. As part of the purchase price for the CSD assets, the Company became liable as the owner of these two facilities and also agreed to indemnify the prior owners of the CSD assets against their share of certain cleanup costs for the Listed Third Party Sites payable to governmental entities under federal or state Superfund laws. Of the 35 Listed Third Party Sites, 12 are currently requiring expenditures on remediation, ten are now settled, and 13 are not currently requiring expenditures on remediation. The status of the two facilities owned by the Company (the Wichita Property and the BR Facility) and one of the Listed Third Party Sites (the Casmalia sites) are further described below. There are also two third party sites at which the Company has been named a PRP as a result of its acquisition of the CSD assets but disputes that it has any cleanup or related liabilities; one such site (the Marine Shale site) is described below. The Company views any liabilities associated with the Marine Shale site and the other third party site as excluded liabilities under the terms of the CSD asset acquisition, but the Company is working with the EPA on a potential settlement. In addition to the CSD related Superfund sites, there are certain of the other third party sites which are not related to the Company’s acquisition of the CSD assets, and certain notifications which the Company has received about other third party sites.

Wichita Property.  The Company acquired in 2002 as part of the CSD assets a service center located in Wichita, Kansas (the “Wichita Property”). The Wichita Property is one of several properties located within the boundaries of a 1,400 acre state-designated Superfund site in an old industrial section of Wichita known as the North Industrial Corridor Site. Along with numerous other PRPs, the former owner executed a consent decree relating to such site with the EPA, and the Company is continuing its ongoing remediation program for the Wichita Property in accordance with that consent decree. The Company also acquired rights under an indemnification agreement between the former owner and an earlier owner of the Wichita Property, which the Company anticipates but cannot guarantee will be available to reimburse certain such cleanup costs.

BR Facility.  The Company acquired in 2002 as part of the CSD assets a former hazardous waste incinerator and landfill in Baton Rouge (the “BR Facility”), for which operations had been previously discontinued by the prior owner. In September 2007, the United States Environmental Protection Agency (the “EPA”) issued a special notice letter to the Company related to the Devil’s Swamp Lake Site (“Devil’s Swamp”) in East Baton Rouge Parish, Louisiana. Devil’s Swamp includes a lake located downstream of an outfall ditch where wastewater and stormwater have been discharged, and Devil’s Swamp is proposed to be included on the National Priorities List due to the presence of Contaminants of Concern (“COC”) cited by the EPA. These COCs include substances of the kind found in wastewater and storm water discharged from the BR Facility in past operations. The EPA originally requested COC generators to submit a good faith offer to conduct a remedial investigation feasibility study directed towards the eventual remediation of the site. The Company is currently performing corrective actions at the BR Facility under an order issued by the Louisiana Department of Environmental Quality (the “LDEQ”), and has begun conducting the remedial investigation and feasibility study under an order issued by the EPA. The Company cannot presently estimate the potential additional liability for the Devil’s Swamp cleanup until a final remedy is selected by the EPA.

Casmalia Site.  At one of the 35 Listed Third Party Sites, the Casmalia Resources Hazardous Waste Management Facility (the “Casmalia site”) in Santa Barbara County, California, the Company received from the EPA a request for information in May 2007. In that request, the EPA is seeking information about the extent to which, if at all, the prior owner transported or arranged for disposal of waste at the Casmalia site. The Company has not recorded any liability for this 2007 notice on the basis that such transporter or arranger liability is currently neither probable nor estimable.

Marine Shale Site.  Prior to 1996, Marine Shale Processors, Inc. (“Marine Shale”) operated a kiln in Amelia, Louisiana which incinerated waste producing a vitrified aggregate as a by-product. Marine Shale contended that its operation recycled waste into a useful product, i.e., vitrified aggregate, and therefore was exempt from regulation under the RCRA and permitting requirements as a hazardous waste incinerator under applicable federal and state environmental laws. The EPA contended that Marine Shale was a “sham-recycler” subject to the regulation and permitting requirements as a hazardous waste incinerator under RCRA, that its vitrified aggregate by-product was a hazardous waste, and that Marine Shale’s continued operation without required permits was illegal. Litigation between the EPA and Marine Shale began in 1990 and continued until July 1996, when the U.S. Fifth Circuit Court of Appeals ordered Marine Shale to shut down its operations.

On May 11, 2007, the EPA and the LDEQ issued a special notice to the Company and other PRPs, seeking a good faith offer to address site remediation at the former Marine Shale facility. Certain of the former owners of the CSD assets were major customers of Marine Shale, but the Marine Shale site was not included as a Listed Third Party Site in connection with the Company’s acquisition of the CSD assets and the Company was never a customer of Marine Shale. Although the Company believes that it is not liable (either directly or under any indemnification obligation) for cleanup costs at the Marine Shale site, the Company elected to join with other parties which had been notified that are potentially PRPs in connection with Marine Shale site to form a group (the “Site Group”) to retain common counsel and participate in further negotiations with the EPA and the LDEQ directed towards the eventual remediation of the Marine Shale site.

18

The Site Group made a good faith settlement offer to the EPA on November 29, 2007, and negotiations among the EPA, the LDEQ and the Site Group with respect to the Marine Shale site are ongoing. At June 30, 2011 and December 31, 2010, the amount of the Company’s reserves relating to the Marine Shale site was $3.8 million.

Certain Other Third Party Sites.  At 14 of the 60 third party sites, the Company has an indemnification agreement with ChemWaste, a former subsidiary of Waste Management, Inc. and the prior owner. The agreement indemnifies the Company with respect to any liability at the 14 sites for waste disposed prior to the Company’s acquisition of the sites. Accordingly, Waste Management is paying all costs of defending those subsidiaries in those 14 cases, including legal fees and settlement costs. However, there can be no guarantee that the Company’s ultimate liabilities for these sites will not exceed the amount recorded or that indemnities applicable to any of these sites will be available to pay all or a portion of related costs. The Company does not have an indemnity agreement with respect to any of the other remaining 60 third party sites not discussed above. However, the Company believes that its additional potential liability, if any, to contribute to the cleanup of such remaining sites will not, in the aggregate, exceed $100,000.

Other Notifications.  Between September 2004 and May 2006, the Company also received notices from certain of the prior owners of the CSD assets seeking indemnification from the Company at five third party sites which are not included in the third party sites described above that have been designated as Superfund sites or potential Superfund sites and for which those prior owners have been identified as PRPs or potential PRPs. The Company has responded to such letters asserting that the Company has no obligation to indemnify those prior owners for any cleanup and related costs (if any) which they may incur in connection with these five sites. The Company intends to assist those prior owners by providing information that is now in the Company’s possession with respect to those five sites and, if appropriate to participate in negotiations with the government agencies and PRP groups involved. The Company has also investigated the sites to determine the existence of potential liabilities independent from the liability of those former owners, and concluded that at this time the Company is not liable for any portion of the potential cleanup of the five sites and therefore has not established a reserve.

Federal and State Enforcement Actions

From time to time, the Company pays fines or penalties in regulatory proceedings relating primarily to waste treatment, storage or disposal facilities. As of June 30, 2011 and December 31, 2010, there were two and three proceedings, respectively, for which the Company reasonably believed that the sanctions could equal or exceed $100,000. During the second quarter, the Company resolved one matter involving one of its operating subsidiaries with no impact to the Company’s financial results of operations.  The Company does not believe that the fines or other penalties in these or any of the other regulatory proceedings will, individually or in the aggregate, have a material adverse effect on its financial condition or results of operations.

Other Contingencies

In December 2010, the Company paid $10.5 million to acquire a minority interest in a privately-held company. Subsequent to the purchase of those securities but prior to December 31, 2010, the privately-held company exercised its irrevocable call right for those shares and tendered payment for a total of $10.5 million. The Company is disputing the fair value asserted by the privately-held company and believes that the shares had a fair value on the date of the exercise of the call right greater than the amount tendered. Due to the exercise of the irrevocable call right, the Company did not own those shares of that privately-held company as of December 31, 2010, and accordingly has recorded the $10.5 million in prepaid expenses and other current assets. The potential recovery of any additional amount depends upon several contested factors, and is considered a gain contingency and therefore has not been recorded in the Company’s consolidated financial statements.

(14) SEGMENT REPORTING

During the quarter ended March 31, 2011, the Company re-aligned its management reporting structure. Under the new structure, the Company’s operations are managed in four reportable segments: Technical Services, Field Services, Industrial Services and Oil and Gas Field Services. The new segment, Oil and Gas Field Services, consists of the previous Exploration Services segment, as well as certain oil and gas related field services departments that were re-assigned from the Industrial Services segment. In addition, certain departments from the Field Services segment were re-assigned to the Industrial Services segment.  Accordingly, the Company re-aligned and re-allocated departmental costs being allocated among the segments to support these management reporting changes.  The Company has recast the segment information to conform to the current year presentation.

Performance of the segments is evaluated on several factors, of which the primary financial measure is “Adjusted EBITDA,” which consists of net income plus accretion of environmental liabilities, depreciation and amortization, net interest expense, and provision for income taxes. Also excluded are other income and income from discontinued operations, net of tax as these amounts are

19

not considered part of usual business operations. Transactions between the segments are accounted for at the Company’s estimate of fair value based on similar transactions with outside customers.

The operations not managed through the Company’s four operating segments are recorded as “Corporate Items.” Corporate Items revenues consist of two different operations for which the revenues are insignificant. Corporate Items cost of revenues represents certain central services that are not allocated to the four operating segments for internal reporting purposes. Corporate Items selling, general and administrative expenses include typical corporate items such as legal, accounting and other items of a general corporate nature that are not allocated to the Company’s four operating segments.

The following table reconciles third party revenues to direct revenues for the three- and six-month periods ended June 30, 2011 and 2010 (in thousands). Third party revenue is revenue billed to outside customers by a particular segment. Direct revenue is the revenue allocated to the segment performing the provided service. The Company analyzes results of operations based on direct revenues because the Company believes that these revenues and related expenses best reflect the manner in which operations are managed.

	For the Three Months Ended June 30, 2011
	TechnicalServices		FieldServices			Industrial Services			Oil and Gas Field Services		CorporateItems			Totals
Third party revenues	$	202,330	$	72,615		$	111,376		$	60,617	$	297		$	447,235
Intersegment revenues, net	4,210		(5,623		)	(1,087		)	2,964		(464		)	—
Direct revenues	$	206,540	$	66,992		$	110,289		$	63,581	$	(167	)	$	447,235

	For the Three Months Ended June 30, 2010
	Technical Services		Field Services (1)			Industrial Services			Oil and Gas Field Services		Corporate Items			Totals
Third party revenues	$	167,409	$	162,723		$	98,804		$	42,663	$	40		$	471,639
Intersegment revenues, net	7,137		(9,086		)	(405		)	2,715		(361		)	—
Direct revenues	$	174,546	$	153,637		$	98,399		$	45,378	$	(321)		$	471,639

	For the Six Months Ended June 30, 2011
	TechnicalServices		FieldServices			Industrial Services			Oil and Gas Field Services		CorporateItems			Totals
Third party revenues	$	387,777	$	134,874		$	219,959		$	139,251	$	336		$	882,197
Intersegment revenues, net	9,351		(9,574		)	(3,960		)	5,157		(974		)	—
Direct revenues	$	397,128	$	125,300		$	215,999		$	144,408	$	(638	)	$	882,197

	For the Six Months Ended June 30, 2010
	Technical Services		Field Services (1)			Industrial Services			Oil and Gas Field Services		Corporate Items			Totals
Third party revenues	$	320,936	$	213,376		$	191,124		$	101,163	$	(64	)	$	826,535
Intersegment revenues, net	12,076		(13,263		)	(1,631		)	3,622		(804		)	—
Direct revenues	$	333,012	$	200,113		$	189,493		$	104,785	$	(868	)	$	826,535

(1)During the three and six months ended June 30, 2010, third party revenues for the Field Services segment included revenues associated with the oil spill response efforts in the Gulf of Mexico of $108.6 million.

20

The following table presents information used by management by reported segment (in thousands). The Company does not allocate interest expense, income taxes, depreciation, amortization, accretion of environmental liabilities, and other income to segments.

	For the Three Months Ended  June 30,						For the Six Months Ended June 30,
	2011			2010			2011			2010
Adjusted EBITDA:
Technical Services	$	59,614		$	44,385		$	104,951		$	77,565
Field Services	12,515			41,603			18,846			46,634
Industrial Services	25,862			24,122			49,205			43,982
Oil and Gas Field Services	8,427			5,966			23,092			17,462
Corporate Items	(25,191		)	(19,446		)	(47,276		)	(40,018		)
Total	$	81,227		$	96,630		$	148,818		$	145,625
Reconciliation to Consolidated Statements of Income:
Accretion of environmental liabilities	$	2,407		$	2,602		$	4,796		$	5,304
Depreciation and amortization	26,936			22,105			52,396			44,779
Income from operations	51,884			71,923			91,626			95,542
Other income	(2,868		)	(2,708		)	(5,767		)	(3,154		)
Interest expense, net of interest income	10,642			7,646			17,120			14,574
Income from continuing operations before provision for income taxes	$	44,110		$	66,985		$	80,273		$	84,122

The following table presents assets by reported segment and in the aggregate (in thousands):

	June  30, 2011		December 31, 2010
Property, plant and equipment, net
Technical Services	$	266,968	$	259,582
Field Services	34,821		32,311
Industrial Services	221,852		180,781
Oil and Gas Field Services	283,384		151,244
Corporate or other assets	41,251		31,476
Total property, plant and equipment, net	$	848,276	$	655,394
Intangible assets:
Technical Services
Goodwill	$	33,654	$	33,448
Permits and other intangibles, net	65,089		66,075
Total Technical Services	98,743		99,523
Field Services
Goodwill	3,088		3,088
Permits and other intangibles, net	3,491		3,651
Total Field Services	6,579		6,739
Industrial Services
Goodwill	28,583		10,934
Permits and other intangibles, net	18,147		17,906
Total Industrial Services	46,730		28,840
Oil and Gas Field Services
Goodwill	23,186		12,782
Permits and other intangibles, net	40,341		26,768
Total Oil and Gas Field Services	63,527		39,550
Total	$	215,579	$	174,652

21

The following table presents the total assets by reported segment (in thousands):

	June 30, 2011		December 31, 2010
Technical Services	$	529,173	$	525,286
Field Services	44,494		35,253
Industrial Services	279,602		221,472
Oil and Gas Field Services	419,870		272,479
Corporate Items	691,941		547,985
Total	$	1,965,080	$	1,602,475

The following table presents the total assets by geographical area (in thousands):

	June 30, 2011		December 31, 2010
United States	$	1,060,846	$	933,550
Canada	899,986		664,534
Other foreign	4,248		4,391
Total	$	1,965,080	$	1,602,475

(15) GUARANTOR AND NON-GUARANTOR SUBSIDIARIES FINANCIAL INFORMATION

As of December 31, 2010, the Company had outstanding $270.0 million aggregate principal amount of 7.625% senior secured notes due 2016 issued by the parent company, Clean Harbors, Inc., and on March 24, 2011, the parent company issued an additional $250.0 million aggregate principal amount of such notes.  The combined $520.0 million of the parent’s senior secured notes outstanding at June 30, 2011 is guaranteed by substantially all of the parent’s subsidiaries organized in the United States. Each guarantor is a wholly-owned subsidiary of the Company and its guarantee is both full and unconditional and joint and several.  The parent’s notes are not guaranteed by the Company’s Canadian or other foreign subsidiaries. The following presents supplemental condensed consolidating financial information for the parent company, the guarantor subsidiaries and the non-guarantor subsidiaries, respectively.

Following is the condensed consolidating balance sheet at June 30, 2011 (in thousands):

	Clean Harbors, Inc.		U.S. Guarantor Subsidiaries		Foreign Non-Guarantor Subsidiaries		Consolidating Adjustments			Total
Assets:
Cash and cash equivalents	$	196,896	$	118,563	$	62,117	$	—		$	377,576
Intercompany receivables	358,947		—		—		(358,947		)	—
Other current assets	16,322		270,797		201,677		—			488,796
Property, plant and equipment, net	—		337,544		510,732		—			848,276
Investments in subsidiaries	900,630		354,556		154,525		(1,409,711		)	—
Intercompany debt receivable	—		480,525		3,701		(484,226		)	—
Other long-term assets	14,660		86,969		148,803		—			250,432
Total assets	$	1,487,455	$	1,648,954	$	1,081,555	$	(2,252,884	)	$	1,965,080
Liabilities and Stockholders’ Equity:
Current liabilities	$	37,492	$	164,082	$	123,856	$	—		$	325,430
Intercompany payables	—		206,330		152,617		(358,947		)	—
Closure, post-closure and remedial liabilities, net	—		134,710		21,744		—			156,454
Long-term obligations	524,994		—		—		—			524,994
Capital lease obligations, net	—		744		8,365		—			9,109
Intercompany debt payable	3,701		—		480,525		(484,226		)	—
Other long-term liabilities	63,900		6,676		21,149		—			91,725
Total liabilities	630,087		512,542		808,256		(843,173		)	1,107,712
Stockholders’ equity	857,368		1,136,412		273,299		(1,409,711		)	857,368
Total liabilities and stockholders’ equity	$	1,487,455	$	1,648,954	$	1,081,555	$	(2,252,884	)	$	1,965,080

22

Following is the condensed consolidating balance sheet at December 31, 2010 (in thousands):

	Clean Harbors, Inc.		U.S. Guarantor Subsidiaries		Foreign Non-Guarantor Subsidiaries		Consolidating Adjustments			Total
Assets:
Cash and cash equivalents	$	100,476	$	124,582	$	77,152	$	—		$	302,210
Intercompany receivables	371,559		—		—		(371,559		)	—
Other current assets	15,521		279,895		154,911		—			450,327
Property, plant and equipment, net	—		302,028		353,366		—			655,394
Investments in subsidiaries	628,723		259,294		91,654		(979,671		)	—
Intercompany debt receivable	—		368,804		3,701		(372,505		)	—
Other long-term assets	7,768		87,888		98,888		—			194,544
Total assets	$	1,124,047	$	1,422,491	$	779,672	$	(1,723,735	)	$	1,602,475
Liabilities and Stockholders’ Equity:
Current liabilities	$	13,935	$	201,384	$	90,965	$	—		$	306,284
Intercompany payables	—		222,750		148,809		(371,559		)	—
Closure, post-closure and remedial liabilities, net	—		141,280		20,494		—			161,774
Long-term obligations	264,007		—		—		—			264,007
Capital lease obligations, net	—		249		6,590		—			6,839
Intercompany debt payable	3,701		—		368,804		(372,505		)	—
Other long-term liabilities	61,577		2,531		18,636		—			82,744
Total liabilities	343,220		568,194		654,298		(744,064		)	821,648
Stockholders’ equity	780,827		854,297		125,374		(979,671		)	780,827
Total liabilities and stockholders’ equity	$	1,124,047	$	1,422,491	$	779,672	$	(1,723,735	)	$	1,602,475

Following is the consolidating statement of income for the three months ended June 30, 2011 (in thousands):

	Clean Harbors, Inc.			U.S. Guarantor Subsidiaries		Foreign Non-Guarantor Subsidiaries			Consolidating Adjustments			Total
Revenues	$	—		$	263,194	$	189,238		$	(5,197	)	$	447,235
Cost of revenues (exclusive of items shown separately below)	—			178,057		134,894			(5,197		)	307,754
Selling, general and administrative expenses	8			38,621		19,625			—			58,254
Accretion of environmental liabilities	—			2,090		317			—			2,407
Depreciation and amortization	—			12,693		14,243			—			26,936
Income from operations	(8		)	31,733		20,159			—			51,884
Other income	—			394		2,474			—			2,868
Interest (expense) income	(10,630		)	5		(17		)	—			(10,642		)
Equity in earnings of subsidiaries	43,534			24,411		—			(67,945		)	—
Intercompany dividend income (expense)	—			—		3,537			(3,537		)	—
Intercompany interest income (expense)	—			8,970		(8,970		)	—			—
Income from operations before provision for income taxes	32,896			65,513		17,183			(71,482		)	44,110
Provision for income taxes	3,740			6,849		4,365			—			14,954
Net income (loss)	$	29,156		$	58,664	$	12,818		$	(71,482	)	$	29,156

23

Following is the consolidating statement of income for the three months ended June 30, 2010 (in thousands):

	Clean Harbors, Inc.			U.S. Guarantor Subsidiaries		Foreign Non-Guarantor Subsidiaries			Consolidating Adjustments			Total
Revenues	$	—		$	322,580	$	147,607		$	1,452		$	471,639
Cost of revenues (exclusive of items shown separately below)	—			214,558		108,270			1,452			324,280
Selling, general and administrative expenses	25			36,973		13,731			—			50,729
Accretion of environmental liabilities	—			2,320		282			—			2,602
Depreciation and amortization	—			11,478		10,627			—			22,105
Income from operations	(25		)	57,251		14,697			—			71,923
Other income	—			38		2,670			—			2,708
Interest (expense) income	(7,229		)	36		(453		)	—			(7,646		)
Equity in earnings of subsidiaries	74,197			22,155		—			(96,352		)	—
Intercompany dividend income (expense)	—			—		3,326			(3,326		)	—
Intercompany interest income (expense)	—			8,329		(8,329		)	—			—
Income from continuing operations before provision for income taxes	66,943			87,809		11,911			(99,678		)	66,985
Provision for income taxes	9,014			12,060		(9,606		)	—			11,468
Income from continuing operations	57,929			75,749		21,517			(99,678		)	55,517
Income from discontinued operations, net of tax	—			—		2,412			—			2,412
Net income	$	57,929		$	75,749	$	23,929		$	(99,678	)	$	57,929

Following is the consolidating statement of income for the six months ended June 30, 2011 (in thousands):

	Clean Harbors, Inc.			U.S. Guarantor Subsidiaries		Foreign Non-Guarantor Subsidiaries			Consolidating Adjustments			Total
Revenues	$	—		$	511,561	$	382,026		$	(11,390	)	$	882,197
Cost of revenues (exclusive of items shown separately below)	—			353,495		278,226			(11,390		)	620,331
Selling, general and administrative expenses	50			74,732		38,266			—			113,048
Accretion of environmental liabilities	—			4,177		619			—			4,796
Depreciation and amortization	—			25,691		26,705			—			52,396
Income from operations	(50		)	53,466		38,210			—			91,626
Other income	—			3,730		2,037			—			5,767
Interest (expense) income	(17,306		)	173		13			—			(17,120		)
Equity in earnings of subsidiaries	76,865			31,712		—			(108,577		)	—
Intercompany dividend income (expense)	—			—		6,993			(6,993		)	—
Intercompany interest income (expense)	—			17,700		(17,700		)	—			—
Income from operations before provision for income taxes	59,509			106,781		29,553			(115,570		)	80,273
Provision for income taxes	7,623			13,176		7,588			—			28,387
Net income	$	51,886		$	93,605	$	21,965		$	(115,570	)	$	51,886

24

Following is the consolidating statement of income for the six months ended June 30, 2010 (in thousands):

	Clean Harbors, Inc.			U.S. Guarantor Subsidiaries		Foreign Non-Guarantor Subsidiaries			Consolidating Adjustments			Total
Revenues	$	—		$	523,423	$	306,928		$	(3,816	)	$	826,535
Cost of revenues (exclusive of items shown separately below)	—			361,408		227,105			(3,816		)	584,697
Selling, general and administrative expenses	50			69,044		27,119			—			96,213
Accretion of environmental liabilities	—			4,740		564			—			5,304
Depreciation and amortization	—			23,527		21,252			—			44,779
Income from operations	(50		)	64,704		30,888			—			95,542
Other income	—			314		2,840			—			3,154
Interest (expense) income	(14,472		)	49		(151		)	—			(14,574		)
Equity in earnings of subsidiaries	93,215			26,816		—			(120,031		)	—
Intercompany dividend income (expense)	—			—		6,612			(6,612		)	—
Intercompany interest income (expense)	—			16,207		(16,207		)	—			—
Income from continuing operations before provision for income taxes	78,693			108,090		23,982			(126,643		)	84,122
Provision for income taxes	10,334			14,364		(6,141		)	—			18,557
Income from continuing operations	68,359			93,726		30,123			(126,643		)	65,565
Income from discontinued operations, net of tax	—			—		2,794			—			2,794
Net income	$	68,359		$	93,726	$	32,917		$	(126,643	)	$	68,359

Following is the condensed consolidating statement of cash flows for the six months ended June 30, 2011 (in thousands):

	Clean Harbors, Inc.			U.S. Guarantor Subsidiaries			Foreign Non-Guarantor Subsidiaries			Total
Net cash from operating activities	$	4,474		$	28,763		$	42,392		$	75,629
Cash flows from investing activities:
Additions to property, plant and equipment	—			(40,991		)	(24,469		)	(65,460		)
Acquisitions, net of cash acquired	—			—			(205,922		)	(205,922		)
Costs to obtain or renew permits				(298		)	(768		)	(1,066		)
Proceeds from sales of fixed assets	—			361			4,530			4,891
Proceeds from sales of marketable securities	—			—			388			388
Investment in subsidiaries	(173,540		)	115,784			57,756			—
Net cash from investing activities	(173,540		)	74,856			(168,485		)	(267,169		)
Cash flows from financing activities:
Change in uncashed checks	—			11,329			2,417			13,746
Proceeds from exercise of stock options	783			—			—			783
Proceeds from employee stock purchase plan	1,556			—			—			1,556
Remittance of shares, net	(1,807		)	—			—			(1,807		)
Excess tax benefit of stock-based compensation	1,617			—			—			1,617
Deferred financing costs paid	(8,099		)	—			—			(8,099		)
Payments on capital leases	—			(318		)	(2,998		)	(3,316		)
Distribution of cash earned on employee participation plan	—			—			(189		)	(189		)
Issuance of senior secured notes, including premium	261,250			—			—			261,250
Dividends (paid) / received	10,186			(24,306		)	14,120			—
Interest (payments) / received	—			24,132			(24,132		)	—
Intercompany debt	—			(120,475		)	120,475			—
Net cash from financing activities	265,486			(109,638		)	109,693			265,541
Effect of exchange rate change on cash	—			—			1,365			1,365
Increase in cash and cash equivalents	96,420			(6,019		)	(15,035		)	75,366
Cash and cash equivalents, beginning of period	100,476			124,582			77,152			302,210
Cash and cash equivalents, end of period	$	196,896		$	118,563		$	62,117		$	377,576

25

Following is the condensed consolidating statement of cash flows for the six months ended June 30, 2010 (in thousands):

	Clean Harbors, Inc.			U.S. Guarantor Subsidiaries			Foreign Non-Guarantor Subsidiaries			Total
Net cash from operating activities	$	(155	)	$	65,613		$	31,859		$	97,317
Cash flows from investing activities:
Additions to property, plant and equipment	—			(17,535		)	(17,955		)	(35,490		)
Acquisitions, net of cash acquired	—			(13,751		)	—			(13,751		)
Costs to obtain or renew permits	—			(946		)	(1,246		)	(2,192		)
Proceeds from sale of fixed assets and assets held for sale	—			930			14,664			15,594
Proceeds from sale of marketable securities	—			—			2,575			2,575
Proceeds from sale of long-term investments	—			1,300			—			1,300
Proceeds from insurance settlement	—			—			1,336			1,336
Investment in subsidiaries	(236,700		)	236,700			—			—
Net cash from investing activities	(236,700		)	206,698			(626		)	(30,628		)
Cash flows from financing activities:
Change in uncashed checks	—			(1,317		)	(2,283		)	(3,600		)
Proceeds from exercise of stock options	318			—			—			318
Proceeds from employee stock purchase plan	1,187			—			—			1,187
Remittance of shares, net	(113		)	—			—			(113		)
Excess tax benefit of stock-based compensation	782			—			—			782
Deferred financing costs paid	(53		)	—			—			(53		)
Payments of capital leases	—			(79		)	(1,673		)	(1,752		)
Distribution of cash earned on employee participation plan	—			—			(148		)	(148		)
Interest (payments) / received	—			9,136			(9,136		)	—
Intercompany debt	236,700			(236,700		)	—			—
Net cash from financing activities	238,821			(228,960		)	(13,240		)	(3,379		)
Effect of exchange rate change on cash	—			—			(1,556		)	(1,556		)
Increase in cash and cash equivalents	1,966			43,351			16,437			61,754
Cash and cash equivalents, beginning of period	141,338			50,408			41,800			233,546
Cash and cash equivalents, end of period	$	143,304		$	93,759		$	58,237		$	295,300

(16) ADDITIONAL ACQUISITIONS

On July 29, 2011, the Company acquired from Logan International Inc. and certain of its subsidiaries substantially all of the assets of Logan’s Destiny Resource Services (“Destiny”) division. Destiny is engaged in the business of providing geospatial, line clearing and drilling services in Canada and the United States.  The purchase price was approximately CDN $38 million in cash, subject to a post-closing adjustment based upon an assumed target amount of working capital.  Acquisition related costs of $0.1 million were included in selling, general and administrative expenses in the Company’s consolidated statements of income for both the three and six months ended June 30, 2011.  The Company acquired Destiny to expand its growing Oil and Gas Field Services segment and expects Destiny to enhance the Company’s service offerings to its customers and its reputation as a leading provider of comprehensive field services for the oil and gas sectors. The Company is in the process of performing its acquisition accounting.

On May 31 and July 29, 2011, respectively, the Company signed an agreement to acquire all of the outstanding stock of a privately owned U.S. company which specializes in treating refinery waste streams primarily in the United States and an agreement to acquire all of the outstanding stock of a privately owned Canadian company which manufactures products relating to the Company’s lodging business. The combined purchase price for both such companies under such agreements is approximately U.S. $100 million. Each such proposed acquisition is subject to customary closing conditions, and no assurance can be given that either or both of such proposed acquisitions will be consummated.

The Company funded the acquisition of Destiny on July 29, 2011, and plans to the fund the acquisition of the two additional private companies described in the preceding paragraph, using a portion of the Company’s available cash at June 30, 2011.

26

ITEM 2.MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Forward-Looking Statements

In addition to historical information, this quarterly report contains forward-looking statements, which are generally identifiable by use of the words “believes,” “expects,” “intends,” “anticipates,” “plans to,” “estimates,” “projects,” or similar expressions. These forward-looking statements are subject to certain risks and uncertainties that could cause actual results to differ materially from those reflected in these forward-looking statements. Factors that might cause such a difference include, but are not limited to, those discussed under Item 1A, “Risk Factors,” in our Annual Report on Form 10-K filed with the Securities and Exchange Commission on March 1, 2011, under Item 1A, “Risk Factors,” included in Part II—Other Information in this report, and in other documents we file from time to time with the Securities and Exchange Commission.  Readers are cautioned not to place undue reliance on these forward-looking statements, which reflect management’s opinions only as of the date hereof. We undertake no obligation to revise or publicly release the results of any revision to these forward-looking statements.

General

We are a leading provider of environmental, energy and industrial services throughout North America.  We serve over 50,000 customers, including a majority of Fortune 500 companies, thousands of smaller private entities and numerous federal, state, provincial and local governmental agencies.  We have more than 175 locations, including over 50 waste management facilities, throughout North America in 37 U.S. states, seven Canadian provinces, Mexico and Puerto Rico.  We also operate international locations in Bulgaria, China, Singapore, Sweden, Thailand and the United Kingdom.

During the quarter ended March 31, 2011, we re-aligned our management reporting structure. Under the new structure, our operations are managed in four reportable segments: Technical Services, Field Services, Industrial Services and Oil and Gas Field Services. The new segment, Oil and Gas Field Services, consists of the previous Exploration Services segment, as well as certain oil and gas related field services departments that were re-assigned from the Industrial Services segment. In addition, certain departments from the Field Services segment were re-assigned to the Industrial Services segment.  Accordingly, we re-aligned and re-allocated departmental costs being allocated among the segments to support these management reporting changes.  This new structure reflects the way management makes operating decisions and manages the growth and profitability of the business.  The amounts presented for the three and six months ended June 30, 2010 have been recast to reflect the impact of such changes.  Under the new structure, the four operating segments consist of:

·Technical Services — provide a broad range of hazardous material management services including the packaging, collection, transportation, treatment and disposal of hazardous and non-hazardous waste at Company owned incineration, landfill, wastewater, and other treatment facilities.

·Field Services — provide a wide variety of environmental cleanup services on customer sites or other locations on a scheduled or emergency response basis including tank cleaning, decontamination, remediation, and spill cleanup.

·Industrial Services — provides industrial and specialty services, such as high-pressure and chemical cleaning, catalyst handling, decoking, material processing, surface rentals and industrial lodging services to refineries, chemical plants, oil sands facilities, pulp and paper mills, and other industrial facilities.

·Oil and Gas Field Services — provides fluid handling, fluid hauling, down hole servicing, surface rentals, exploration, mapping and directional boring services to the energy sector serving oil and gas exploration, production, and power generation.

Technical Services and Field Services are included as part of Clean Harbors Environmental Services, and Industrial Services and Oil and Gas Field Services are included as part of Clean Harbors Energy and Industrial Services.

Overview

During the second quarter of 2011, we completed the acquisition of Peak Energy Services Ltd. (“Peak”) and integrated the Peak operations with our existing systems and processes. Peak is a diversified energy services organization headquartered in Calgary, Alberta, operating in western Canada and the U.S. Through its various operating divisions, Peak provides drilling and production equipment and services to its customers in the conventional and unconventional oil and natural gas industries as well as the oil sands region of western Canada.  Peak also provides water technology solutions to a variety of customers throughout North America. Peak employs approximately 900 people. We anticipate that this acquisition will expand our presence in the energy services marketplace, particularly in the area of oil and natural gas drilling and production support. The Peak business has been integrated within the Oil and Gas Field Services and Industrial Services segments of our operations and reporting structure.

27

We acquired 100% of Peak’s outstanding common shares (other than the 3.15% of Peak’s outstanding common shares which we already owned) in exchange for approximately CDN $158.7 million in cash (CDN $0.95 for each Peak share), and the assumption and payment of Peak net debt of approximately CDN $37.5 million. The total acquisition price, which includes the previous investment in Peak shares referred to above, was approximately CDN $200.2 million or U.S. $205.1 million based on an exchange rate of 0.976057 CDN $ to one U.S. $ on June 10, 2011.

During the three months ended June 30, 2011, our revenues were $447.2 million, compared with $471.6 million during the three months ended June 30, 2010.  Revenue for the three months ended June 30, 2010 included our emergency response efforts in the Gulf of Mexico of $108.6 million. The year-over-year revenue growth, exclusive of the oil spill project work at the Gulf, was driven by broad-based growth across all of our segments.  Our revenues were also favorably impacted by $9.1 million due to the strengthening of the Canadian dollar.

Our Technical Services revenues accounted for 46% of our total revenues for the three months ended June 30, 2011.  The year-over-year increase in revenues of more than 18% was primarily due to revenue growth at our incinerators, treatment, storage and disposal facilities, and landfills.  The utilization rate at our incinerators was more than 92% with strong contributions from both our U.S. and Canadian facilities.  Landfill volumes increased 7% year-over-year.

Our Field Services revenues accounted for 15% of our total revenues for the three months ended June 30, 2011. Exclusive of the Gulf oil spill project revenues generated during the three months ended June 30, 2010, the year-over-year increase in Field Services revenues of more than 20% resulted primarily from a steady stream of large-scale project work.

Our Industrial Services revenues accounted for 25% of our total revenues for the three months ended June 30, 2011. The year-over-year increase in revenue of 12% was primarily due to work performed for an unplanned shutdown at one of our customer’s sites, continued investment in the oil sands region of Canada, incremental revenues from refinery turnaround work, revenues associated with the Peak acquisition and high utilization rates at the camps in our lodging business.

Our Oil and Gas Field Services revenues accounted for 14% of our total revenues for the three months ended June 30, 2011. The year-over-year increase of 40% was primarily due to contributions from the acquisition of Peak and continued investments in U.S. gas and oil production resulting in increased demand for our services.

Our cost of revenues decreased from $324.3 million in the second quarter of 2010 to $307.8 million in the second quarter of 2011.  The second quarter of 2010 included $65.5 million of costs associated with the Gulf oil spill project.   Exclusive of those oil spill costs, our cost of revenues increased primarily because of our increased revenues.  Our gross profit margin was 31.2% for both the three months ended June 30, 2011 and 2010.   Margins in the quarter benefited from the successful implementation of pricing initiatives and tightly managed overall costs.  In addition, we were effective at passing through higher fuel expenses in the current quarter.

During the three months ended June 30, 2011, our net income was also affected by the following:

·A $1.9 million gain on remeasurement of marketable securities recorded as a result of the Peak acquisition. We previously owned a 3.15% interest in Peak which was recorded in marketable securities. On June 10, 2011, we acquired the remaining outstanding shares of Peak and as a result, we remeasured the fair value of the previously held common shares and recognized the resulting gain in other income. The unrealized gain on the Peak investment was previously recorded in accumulated other comprehensive income.

·An effective tax rate for the current quarter of 33.9%, compared with 17.7% for the same period last year. The increase in the effective tax rate was primarily attributable to the decrease in unrecognized tax benefits recorded in the second quarter of 2010.  Excluding this decrease, the rate decreased 3.2% as compared to the three months ended June 30, 2010, primarily due to the recording of an energy investment tax credit for a solar energy project placed in service and the increased profits attributable to Canada, which has a lower corporate income tax rate as compared to the United States.

Environmental Liabilities

We have accrued environmental liabilities as of June 30, 2011, of approximately $172.1 million, substantially all of which we assumed as part of our acquisitions of the Chemical Services Division, or “CSD,” of Safety-Kleen Corp. in 2002, Teris LLC in 2006, and one of the two solvent recycling facilities we purchased from Safety-Kleen Systems, Inc. in 2008.  We anticipate such liabilities will be payable over many years and that cash flows generated from operations will be sufficient to fund the payment of such liabilities when required. However, events not now anticipated (such as future changes in environmental laws and regulations) could require that such payments be made earlier or in greater amounts than currently anticipated.

28

We realized a net benefit in the six months ended June 30, 2011, of $0.8 million related to changes in our environmental liability estimates. Changes in environmental liability estimates include changes in landfill retirement liability estimates, which are recorded in cost of revenues, and changes in non-landfill retirement and remedial liability estimates, which are recorded in selling, general and administrative costs.  During the six months ended June 30, 2011, a benefit of approximately $0.4 million was recorded in cost of revenues and a benefit of approximately $0.4 million was recorded in selling, general and administrative expenses. See further detail discussed in Note 7, “Closure and Post-Closure Liabilities,” and Note 8, “Remedial Liabilities,” to our consolidated financial statements included in Item 1 of this report.

Results of Operations

The following table sets forth for the periods indicated certain operating data associated with our results of operations. This table and subsequent discussions should be read in conjunction with Item 6, “Selected Financial Data,” of our Annual Report on Form 10-K for the year ended December 31, 2010, Item 8, “Financial Statements and Supplementary Data,” included in our Current Report on Form 8-K filed on July 15, 2011 and Item 1, “Financial Statements,” in this report.

	Percentage of Total Revenues
	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2011		2010		2011		2010
Revenues	100.0	%	100.0	%	100.0	%	100.0	%
Cost of revenues (exclusive of items shown separately below)	68.8		68.8		70.3		70.8
Selling, general and administrative expenses	13.1		10.7		12.8		11.6
Accretion of environmental liabilities	0.5		0.6		0.6		0.6
Depreciation and amortization	6.0		4.7		5.9		5.4
Income from operations	11.6		15.2		10.4		11.6
Other income	0.6		0.6		0.6		0.4
Interest expense, net of interest income	(2.4	)	(1.6	)	(1.9	)	(1.8	)
Income from continuing operations before provision for income taxes	9.8		14.2		9.1		10.2
Provision for income taxes	3.3		2.4		3.2		2.2
Income from continuing operations	6.5		11.8		5.9		8.0
Income from discontinued operations, net of tax	—		0.5		—		0.3
Net income	6.5	%	12.3	%	5.9	%	8.3	%

Earnings Before Interest, Taxes, Depreciation and Amortization (“Adjusted EBITDA”)

We define Adjusted EBITDA (a measure not defined under generally accepted accounting principles) as net income plus accretion of environmental liabilities, depreciation and amortization, net interest expense and provision for income taxes, less other income and income from discontinued operations, net of tax.  Our management considers Adjusted EBITDA to be a measurement of performance which provides useful information to both management and investors. Adjusted EBITDA should not be considered an alternative to net income or other measurements under generally accepted accounting principles in the United States (“GAAP”). Because Adjusted EBITDA is not calculated identically by all companies, our measurements of Adjusted EBITDA may not be comparable to similarly titled measures reported by other companies.

We use Adjusted EBITDA to enhance our understanding of our core operating performance, which represents our views concerning our performance in the ordinary, ongoing and customary course of our operations. We historically have found it helpful, and believe that investors have found it helpful, to consider an operating measure that excludes expenses such as debt extinguishment and related costs relating to transactions not reflective of our core operations.

The information about our core operating performance provided by this financial measure is used by our management for a variety of purposes. We regularly communicate Adjusted EBITDA results to our board of directors and discuss with the board our interpretation of such results. We also compare our Adjusted EBITDA performance against internal targets as a key factor in determining cash bonus compensation for executives and other employees, largely because we believe that this measure is indicative of how the fundamental business is performing and is being managed.

29

We also provide information relating to our Adjusted EBITDA so that analysts, investors and other interested persons have the same data that we use to assess our core operating performance. We believe that Adjusted EBITDA should be viewed only as a supplement to the GAAP financial information. We also believe, however, that providing this information in addition to, and together with, GAAP financial information permits the foregoing persons to obtain a better understanding of our core operating performance and to evaluate the efficacy of the methodology and information used by management to evaluate and measure such performance on a standalone and a comparative basis.

The following is a reconciliation of net income to Adjusted EBITDA (in thousands):

	For the Three Months Ended June 30,						For the Six Months Ended June 30,
	2011			2010			2011			2010
Net income	$	29,156		$	57,929		$	51,886		$	68,359
Accretion of environmental liabilities	2,407			2,602			4,796			5,304
Depreciation and amortization	26,936			22,105			52,396			44,779
Other income	(2,868		)	(2,708		)	(5,767		)	(3,154		)
Interest expense, net	10,642			7,646			17,120			14,574
Provision for income taxes	14,954			11,468			28,387			18,557
Income from discontinued operations, net of tax	—			(2,412		)	—			(2,794		)
Adjusted EBITDA	$	81,227		$	96,630		$	148,818		$	145,625

The following reconciles Adjusted EBITDA to cash from operations (in thousands):

	For the Six Months Ended June 30,
	2011			2010
Adjusted EBITDA	$	148,818		$	145,625
Interest expense, net	(17,120		)	(14,574		)
Provision for income taxes	(28,387		)	(18,557		)
Income from discontinued operations, net of tax	—			2,794
Allowance for doubtful accounts	402			833
Amortization of deferred financing costs and debt discount	898			1,475
Change in environmental liability estimates	(773		)	(3,893		)
Deferred income taxes	819			388
Stock-based compensation	2,880			3,107
Excess tax benefit of stock-based compensation	(1,617		)	(782		)
Income tax benefits related to stock option exercises	1,617			777
Eminent domain compensation	3,354			—
Gain on sales of businesses	—			(2,678		)
Environmental expenditures	(5,564		)	(4,717		)
Changes in assets and liabilities, net of acquisitions:
Accounts receivable	18,063			(61,294		)
Other current assets	(5,252		)	(20,868		)
Accounts payable	(33,024		)	48,411
Other current liabilities	(9,485		)	21,270
Net cash from operating activities	$	75,629		$	97,317

Segment data

Performance of our segments is evaluated on several factors of which the primary financial measure is Adjusted EBITDA. The following tables set forth certain operating data associated with our results of operations and summarizes Adjusted EBITDA contribution by operating segment for the three and six months ended June 30, 2011 and 2010 (in thousands). We consider the Adjusted EBITDA contribution from each operating segment to include revenue attributable to each segment less operating expenses, which include cost of revenues and selling, general and administrative expenses. Revenue attributable to each segment is generally external or direct revenue from third party customers. Certain income or expenses of a non-recurring or unusual nature are not included in the operating segment Adjusted EBITDA contribution. Amounts presented have been recast to reflect the changes made to our segment presentation as a result of the changes made in the first quarter of 2011 in how we manage our business. This table and subsequent discussions should be read in conjunction with Item 6, “Selected Financial Data,” of our Annual Report on Form 10-K for the year ended December 31, 2010 and Item 8, “Financial Statements and Supplementary Data,” and in particular Note 16, “Segment

30

Reporting,” included in our Current Report on Form 8-K filed on July 15, 2011 and Item 1, “Financial Statements” and in particular Note 14, “Segment Reporting,” in this report.

Three months ended June 30, 2011 versus the three months ended June 30, 2010

	Summary of Operations (in thousands)
	For the Three Months Ended June 30,
							$			%
	2011			2010			Change			Change
Direct Revenues:
Technical Services	$	206,540		$	174,546		$	31,994		18.3	%
Field Services	66,992			153,637			(86,645		)	(56.4	)
Industrial Services	110,289			98,399			11,890			12.1
Oil and Gas Field Services	63,581			45,378			18,203			40.1
Corporate Items	(167		)	(321		)	154			(48.0	)
Total	447,235			471,639			(24,404		)	(5.2	)
Cost of Revenues (exclusive of items shown separately) (1):
Technical Services	129,765			112,797			16,968			15.0
Field Services	47,569			104,324			(56,755		)	(54.4	)
Industrial Services	76,890			69,144			7,746			11.2
Oil and Gas Field Services	50,158			37,056			13,102			35.4
Corporate Items	3,372			959			2,413			251.6
Total	307,754			324,280			(16,526		)	(5.1	)
Selling, General & Administrative Expenses:
Technical Services	17,161			17,364			(203		)	(1.2	)
Field Services	6,908			7,710			(802		)	(10.4	)
Industrial Services	7,537			5,133			2,404			46.8
Oil and Gas Field Services	4,996			2,356			2,640			112.1
Corporate Items	21,652			18,166			3,486			19.2
Total	58,254			50,729			7,525			14.8
Adjusted EBITDA:
Technical Services	59,614			44,385			15,229			34.3
Field Services	12,515			41,603			(29,088		)	(69.9	)
Industrial Services	25,862			24,122			1,740			7.2
Oil and Gas Field Services	8,427			5,966			2,461			41.3
Corporate Items	(25,191		)	(19,446		)	(5,745		)	29.5
Total	$	81,227		$	96,630		$	(15,403	)	(15.9	)%

(1)Items shown separately consist of (i) accretion of environmental liabilities and (ii) depreciation and amortization.

Revenues

Technical Services revenues increased 18.3%, or $32.0 million, in the three months ended June 30, 2011 from the comparable period in 2010 primarily due to changes in product mix and increases in pricing ($12.5 million), increases in volumes being processed through our landfills, treatment, storage and disposal facilities, incinerators and waste water treatment plants ($8.4 million), the strengthening of the Canadian dollar ($1.7 million) and an increase in base business. These increases were partially offset by reductions in volumes being processed through our solvent recycling facilities ($1.0 million).

Field Services revenues decreased 56.4%, or $86.6 million, in the three months ended June 30, 2011 from the comparable period in 2010.  Field Services performed oil spill project business in the Gulf of Mexico during the three months ended June 30, 2010 which accounted for $108.6 million of our third party revenues.  Excluding the Gulf oil spill project in 2010, Field Services revenues increased for the three months ended June 30, 2011 from the comparable period in 2010 primarily due to increases in our other event related revenues ($2.9 million), our polychlorinated biphenyls (“PCB”) business ($3.7 million), our large remedial project business ($1.7 million), and our oil recycling business due to increased pricing and volumes ($1.0 million).  The remaining increase related primarily to growth in our base business.

31

Industrial Services revenues increased 12.1%, or $11.9 million, in the three months ended June 30, 2011 from the comparable period in 2010 primarily due to an increase in shutdown work performed for approximately $6.0 million, revenues related to the acquisition of Peak ($3.0 million), an increase in our lodging business ($1.1 million), the strengthening of the Canadian dollar ($2.1 million), and growth in the oil sands region of Canada.

Oil and Gas Field Services revenues increased 40.1%, or $18.2 million, in the three months ended June 30, 2011 from the comparable period in 2010 primarily due to fluids handling and surface rentals activity related to the acquisition of Peak on June 10, 2011 ($6.6 million), increased drilling activities, response to a pipeline break in the High Level, Alberta market and the strengthening of the Canadian dollar ($2.1 million).

There are many factors which have impacted, and continue to impact, our revenues. These factors include, but are not limited to: the level of emergency response projects, the general conditions of the oil and gas industries particularly in the Alberta oil sands and other parts of Western Canada, competitive industry pricing, and the effects of fuel prices on our fuel recovery fees.

Cost of Revenues

Technical Services cost of revenues increased 15.0%, or $17.0 million, in the three months ended June 30, 2011 from the comparable period in 2010 primarily due to increases in salary and labor expenses ($3.8 million), outside transportation costs ($2.7 million), fuel expense ($2.2 million), vehicle and equipment repair costs ($1.8 million), materials and supplies expenses ($1.7 million), outside disposal and rail costs ($1.5 million), materials for reclaim costs ($1.2 million), equipment rental fees ($0.6 million), chemicals and consumables expenses ($0.4 million), and the strengthening of the Canadian dollar ($1.0 million).

Field Services cost of revenues decreased 54.4%, or $56.8 million, in the three months ended June 30, 2011 from the comparable period in 2010 primarily due to decreased subcontractor fees, materials and supplies costs, equipment rental costs, travel and other costs associated with the oil spill project business in the Gulf of Mexico of $65.5 million that occurred in the second quarter of 2010.  Excluding those 2010 oil spill project costs, Field Services cost of revenues increased $8.7 million for the three months ended June 30, 2011 from the comparable period in 2010 primarily due to increases in materials for reclaim or resale ($2.5 million), equipment rental fees ($1.6 million), labor and related expenses ($1.2 million), outside disposal costs ($0.9 million), travel costs ($0.5 million) and fuel costs ($0.5 million).

Industrial Services cost of revenues increased 11.2%, or $7.7 million, in the three months ended June 30, 2011 from the comparable period in 2010 primarily due to increased salary and labor expenses ($7.2 million), vehicle expenses ($2.5 million), fuel expenses ($1.1 million), catering costs associated with the increased lodging services revenues ($0.8 million), chemicals and consumables ($0.8 million), travel costs related to the shutdown activity ($0.7 million), material and supplies expenses ($0.5 million), and the strengthening of the Canadian dollar ($1.0 million) offset partially by decreases in lease operator expenses due to buyout of leases ($9.4 million).

Oil and Gas Field Services cost of revenues increased 35.4%, or $13.1 million, in the three months ended June 30, 2011 from the comparable period in 2010 primarily due to salary and labor expenses ($5.9 million), subcontractor fees ($2.2 million), vehicle expenses ($2.1 million), fuel expenses ($1.4 million), equipment repair expenses ($0.6 million), and the strengthening of the Canadian dollar ($1.0 million), offset partially by decreases in lease operator expenses due to buyout of leases ($0.9 million). These increases resulted partially from costs associated with the acquisition of Peak in June 2011.

We believe that our ability to manage operating costs is important in our ability to remain price competitive. We continue to upgrade the quality and efficiency of our waste treatment services through the development of new technology and continued modifications and upgrades at our facilities, and implementation of strategic sourcing initiatives. We plan to continue to focus on achieving cost savings relating to purchased goods and services through a strategic sourcing initiative. No assurance can be given that our efforts to reduce future operating expenses will be successful.

Selling, General and Administrative Expenses

Technical Services selling, general and administrative expenses decreased 1.2%, or $0.2 million, in the three months ended June 30, 2011 from the comparable period in 2010 primarily due to decreased salaries and commissions and bonus expense.

Field Services selling, general and administrative expenses decreased 10.4%, or $0.8 million, in the three months ended June 30, 2011 from the comparable period in 2010 primarily due to a decrease in commissions and bonus expense.

32

Industrial Services selling, general and administrative expenses increased 46.8%, or $2.4 million, in the three months ended June 30, 2011 from the comparable period in 2010 primarily due to increased salaries, commissions and bonus expense and professional fees.

Oil and Gas Field Services selling, general and administrative expenses increased 112.1%, or $2.6 million, in the three months ended June 30, 2011 from the comparable period in 2010 primarily due to increased salaries, commissions and bonus expense, travel and professional fees.

Corporate Items selling, general and administrative expenses increased 19.2%, or $3.5 million, for the three months ended June 30, 2011, as compared to the same period in 2010 primarily due to increases in salaries and bonuses ($0.7 million), increased health insurance costs ($0.9 million), increased employer contribution costs related to U.S. and Canadian retirement savings plans ($0.9 million), and a year-over-year decrease in favorable changes in environmental liability estimates ($3.0 million), offset partially by reductions in year-over-year severance costs ($0.8 million) and stock-based compensation costs ($1.1 million) primarily related to recording cumulative expense of approximately $2.0 million in the second quarter of 2010 associated with the 2009 and 2010 performance awards then being deemed probable of achieving the performance criteria.

Depreciation and Amortization

	Three Months Ended June 30, (in thousands)
	2011		2010
Depreciation of fixed assets	$	21,784	$	17,978
Landfill and other amortization	5,152		4,127
Total depreciation and amortization	$	26,936	$	22,105

Depreciation and amortization increased 21.9%, or $4.8 million, in the second quarter of 2011 compared to the same period in 2010. Depreciation of fixed assets increased primarily due to acquisitions and other increased capital expenditures in recent periods. Landfill and other amortization increased primarily due to the increase in other intangibles resulting from recent acquisitions.

Other Income

Other income increased $0.2 million in the three months ended June 30, 2011 compared to the same period in 2010.  Other income in the three months ended June 30, 2011 included a $1.9 million gain on remeasurement of marketable securities as a result of the Peak acquisition. We remeasured our previously held common shares in Peak at their fair value and recognized the resulting gain in other income. Other income in the three months ended June 30, 2010 included a gain on sale of certain other marketable securities of $2.4 million.

Interest Expense, Net

	Three Months Ended June 30, (in thousands)
	2011			2010
Interest expense	$	10,944		$	7,811
Interest income	(302		)	(165		)
Interest expense, net	$	10,642		$	7,646

Interest expense, net increased $3.0 million in the second quarter of 2011 compared to the same period in 2010. The increase in interest expense was primarily due to the issuance of $250.0 million in senior secured notes in March 2011 and the amendment of our revolving credit facility in May 2011.

33

Six months ended June 30, 2011 versus the six months ended June 30, 2010

	Summary of Operations (in thousands)
	For the Six Months Ended June 30,
							$			%
	2011			2010			Change			Change
Direct Revenues:
Technical Services	$	397,128		$	333,012		$	64,116		19.3	%
Field Services	125,300			200,113			(74,813		)	(37.4	)
Industrial Services	215,999			189,493			26,506			14.0
Oil and Gas Field Services	144,408			104,785			39,623			37.8
Corporate Items	(638		)	(868		)	230			(26.5	)
Total	882,197			826,535			55,662			6.7
Cost of Revenues (exclusive of items shown separately) (1):
Technical Services	257,943			222,843			35,100			15.8
Field Services	93,683			140,027			(46,344		)	(33.1	)
Industrial Services	151,695			135,635			16,060			11.8
Oil and Gas Field Services	111,632			82,667			28,965			35.0
Corporate Items	5,378			3,525			1,853			52.8
Total	620,331			584,697			35,634			6.1
Selling, General & Administrative Expenses:
Technical Services	34,234			32,604			1,630			5.0
Field Services	12,771			13,452			(681		)	(5.1	)
Industrial Services	15,099			9,876			5,223			52.9
Oil and Gas Field Services	9,684			4,656			5,028			108.0
Corporate Items	41,260			35,625			5,635			15.8
Total	113,048			96,213			16,835			17.5
Adjusted EBITDA:
Technical Services	104,951			77,565			27,386			35.3
Field Services	18,846			46,634			(27,788		)	(59.6	)
Industrial Services	49,205			43,982			5,223			11.9
Oil and Gas Field Services	23,092			17,462			5,630			32.2
Corporate Items	(47,276		)	(40,018		)	(7,258		)	18.1
Total	$	148,818		$	145,625		$	3,193		2.2	%

(1)Items shown separately consist of (i) accretion of environmental liabilities and (ii) depreciation and amortization.

Revenues

Technical Services revenues increased 19.3%, or $64.1 million, in the six months ended June 30, 2011 from the comparable period in 2010 primarily due to changes in product mix and increases in pricing ($21.0 million), increases in volumes being processed through our landfills, treatment, storage and disposal facilities, incinerators and waste water treatment plants ($16.2 million), the strengthening of the Canadian dollar ($2.9 million) and an increase in base business. These increases were partially offset by reductions in volumes being processed through our solvent recycling facilities ($0.9 million).

Field Services revenues decreased 37.4%, or $74.8 million, in the six months ended June 30, 2011 from the comparable period in 2010.  Field Services performed oil spill project business in the Gulf of Mexico during the six months ended June 30, 2011 which accounted for $108.6 million of our third party revenues.  Excluding those 2010 oil spill project costs, Field Services revenues increased for the six months ended June 30, 2011 from the comparable period in 2010 primarily due to increases in our other event related revenues ($6.1 million), our PCB business ($6.1 million), increases in large remedial project business ($1.9 million), and increases in our oil recycling business due to increased pricing and volumes ($1.0 million).

Industrial Services revenues increased 14.0%, or $26.5 million, in the six months ended June 30, 2011 from the comparable period in 2010 primarily due to an increase in shutdown work performed for approximately $15.0

34

million, an increase in our lodging business ($5.2 million), revenues related to the acquisition of Peak ($3.0 million), the strengthening of the Canadian dollar ($7.8 million), and growth in the oil sands region of Canada.

Oil and Gas Field Services revenues increased 37.8%, or $39.6 million, in the six months ended June 30, 2011 from the comparable period in 2010 primarily due to fluids handling and surface rentals activity related to the acquisition of Peak on June 10, 2011 ($6.6 million), the prolonged and seasonably cold winter in Western Canada supporting an extended period of drilling activity, the benefit of the economic recovery for the energy services business, the increased price of oil generating increased exploration activity in North Western Canada, response to a pipeline break in the High Level, Alberta market and the strengthening of the Canadian dollar ($5.9 million).

There are many factors which have impacted, and continue to impact, our revenues. These factors include, but are not limited to: the level of emergency response projects, the effects of unseasonable weather conditions in the first quarter, the general conditions of the oil and gas industries particularly in the Alberta oil sands and other parts of Western Canada, competitive industry pricing, and the effects of fuel prices on our fuel recovery fees.

Cost of Revenues

Technical Services cost of revenues increased 15.8%, or $35.1 million, in the six months ended June 30, 2011 from the comparable period in 2010 primarily due to increases in salary and labor expenses ($7.2 million), outside transportation costs ($6.7 million), fuel expense ($4.8 million), outside disposal and rail expenses ($3.1 million), materials and supplies expenses ($2.7 million), materials for reclaim costs ($2.4 million), turnaround and downtime costs ($2.2 million), vehicle expenses and equipment repairs ($2.1 million), equipment rentals and leased equipment costs ($1.4 million), chemicals and consumables costs ($1.1 million), and the strengthening of the Canadian dollar ($1.9 million).

Field Services cost of revenues decreased 33.1%, or $46.3 million, in the six months ended June 30, 2011 from the comparable period in 2010 primarily due to decreased subcontractor fees, materials and supplies costs, equipment rental costs and travel and other costs associated with the oil spill project business in the Gulf of Mexico of $65.5 million that occurred in the second quarter of 2010. Excluding those 2010 oil spill project costs, Field Services cost of revenues increased $19.2 million for the six months ended June 30, 2011 from the comparable period in 2010 primarily due to increases in labor and related expenses ($3.5 million), materials for reclaim or resale ($3.4 million), subcontractor costs ($2.6 million), equipment rental fees ($2.1 million), outside disposal costs ($2.0 million), materials and supplies costs ($1.3 million), fuel costs ($1.2 million), travel costs ($0.9 million) and vehicle expenses ($0.5 million).

Industrial Services cost of revenues increased 11.8%, or $16.1 million, in the six months ended June 30, 2011 from the comparable period in 2010 primarily due to salary and labor expenses ($15.3 million), vehicle expenses ($4.0 million), catering costs associated with the increased lodging services revenues ($2.4 million), fuel expenses (2.3 million), travel costs related to the shutdown activity ($2.1 million), chemicals and consumables ($1.5 million), material and supplies expenses ($1.3 million), and utilities costs ($0.9 million), and the strengthening of the Canadian dollar ($5.4 million), offset partially by decreases in lease operator expenses due to buyout of leases ($17.5 million) and subcontractor fees ($2.0 million).

Oil and Gas Field Services cost of revenues increased 35.0%, or $29.0 million, in the six months ended June 30, 2011 from the comparable period in 2010 primarily due to increases in salary and labor expenses ($13.0 million), fuel expenses ($4.4 million), vehicle expenses ($3.7 million), subcontractor fees ($2.2 million), equipment repair expenses ($1.6 million), travel costs ($1.5 million), materials and supplies costs ($0.8 million), and the strengthening of the Canadian dollar ($4.6 million), offset partially by decreases in lease operator expenses due to buyout of leases ($1.7 million) and leased equipment costs ($0.8 million).  These increases resulted partially by costs associated with the acquisition of Peak in June 2011.

Corporate Items cost of revenues increased $1.9 million for the six months ended June 30, 2011, as compared to the same period in 2010 primarily due to increased health insurance related costs ($2.0 million) and fuel and vehicle expenses ($0.4 million), offset partially by a reduction in insurance costs ($0.7 million).

We believe that our ability to manage operating costs is important in our ability to remain price competitive. We continue to upgrade the quality and efficiency of our waste treatment services through the development of new technology and continued modifications and upgrades at our facilities, and implementation of strategic sourcing initiatives. We plan to continue to focus on achieving cost savings relating to purchased goods and services through a strategic sourcing initiative. No assurance can be given that our efforts to reduce future operating expenses will be successful.

35

Selling, General and Administrative Expenses

Technical Services selling, general and administrative expenses increased 5.0%, or $1.6 million, in the six months ended June 30, 2011 from the comparable period in 2010 primarily due to increased salaries, commissions and bonuses and year-over-year unfavorable changes in environmental liability estimates.

Field Services selling, general and administrative expenses decreased 5.1%, or $0.7 million, in the six months ended June 30, 2011 from the comparable period in 2010 primarily due to a decrease in commissions and bonus expense.

Industrial Services selling, general and administrative expenses increased 52.9%, or $5.2 million, in the six months ended June 30, 2011 from the comparable period in 2010 primarily due to increases in salaries, commissions and bonus expense and professional fees.

Oil and Gas Field Services selling, general and administrative expenses increased 108.0%, or $5.0 million, in the six months ended June 30, 2011 from the comparable period in 2010 primarily due to due to increases in salaries, commissions and bonus expense, and professional fees.

Corporate Items selling, general and administrative expenses increased 15.8%, or $5.6 million, for the six months ended June 30, 2011, as compared to the same period in 2010 primarily due to increases in salaries and bonuses ($1.6 million), increased employer contribution costs related to U.S. and Canadian retirement savings plans ($1.5 million), health insurance related costs ($0.8 million), and year-over-year decrease in favorable changes in environmental liability estimates ($2.8 million), offset partially by a reduction in year-over-year severance costs ($1.1 million).

Depreciation and Amortization

	Six Months Ended June 30, (in thousands)
	2011		2010
Depreciation of fixed assets	$	41,954	$	35,861
Landfill and other amortization	10,442		8,918
Total depreciation and amortization	$	52,396	$	44,779

Depreciation and amortization increased 17.0%, or $7.6 million, in the first six months of 2011 compared to the same period in 2010. Depreciation of fixed assets increased primarily due to acquisitions and other increased capital expenditures in recent periods. Landfill and other amortization increased primarily due to the increase in other intangible assets resulting from recent acquisitions.

Other Income

Other income increased $2.6 million in the six months ended June 30, 2011 compared to the same period in 2010.  Other income in the six months ended June 30, 2011 included compensation of $3.4 million received from the Santa Clara Valley Transit Authority for the release by eminent domain of certain rail rights in connection with our hazardous waste facility located in San Jose, California, as well as a $1.9 million gain on remeasurement of marketable securities as a result of the Peak acquisition. We remeasured our previously held common shares in Peak at their fair value and recognized the resulting gain in other income. Other income in the six months ended June 30, 2010 included a gain on sale of certain other marketable securities of $2.4 million.

Interest Expense, Net

	Six Months Ended June 30, (in thousands)
	2011			2010
Interest expense	$	17,666		$	14,841
Interest income	(546		)	(267		)
Interest expense, net	$	17,120		$	14,574

Interest expense, net increased $2.5 million in the first six months of 2011 compared to the same period in 2010. The increase in interest expense was primarily due to the issuance of $250.0 million in senior secured notes in March 2011 and the amendment of our revolving credit facility in May 2011.

36

Income from Discontinued Operations

In connection with our acquisition of Eveready, we agreed with the Canadian Commissioner of Competition to divest Eveready’s Pembina Area Landfill, located near Drayton Valley, Alberta, due to its proximity to our existing landfill in the region. Prior to its sale in April 2010, the Pembina Area Landfill met the held for sale criteria and therefore the fair value of its assets and liabilities less estimated costs to sell were recorded as held for sale in our consolidated balance sheet. In connection with this sale, we recognized a pre-tax gain of $1.3 million which, along with the net income through April 30, 2010 for the Pembina Area Landfill, has been recorded in income from discontinued operations on our consolidated statement of income for the six months ended June 30, 2011. From January 1, 2010 to April 30, 2010, the Pembina Area Landfill recorded $2.2 million of revenues which are included in income from discontinued operations.

In addition to the above, we sold the mobile industrial health business in the second quarter of 2010 and recognized a $1.4 million pre-tax gain on sale which was recorded in income from discontinued operations.

Income Taxes

The Company’s effective tax rate (including taxes on income from discontinued operations) for the three and six months ended June 30, 2011 was 33.9% and 35.4%, compared to 17.7% and 22.4% for the same periods in 2010.  The increase in the rate is primarily attributable to the decrease in unrecognized tax benefits recorded in the second quarter of 2010.  Excluding this discrete item, the rate decreased 2.4% as compared to the six months ended June 30, 2010 primarily due to the increased profits attributable to Canada, which has a lower corporate income tax rate as compared to the United States, and the recording of an energy investment tax credit for a solar energy project placed in service.

Income tax expense (including taxes on income from discontinued operations) for the three months ended June 30, 2011 increased $2.5 million to $15.0 million from $12.5 million for the comparable period in 2010. Income tax expense (including taxes on income from discontinued operations) for the six months ended June 30, 2011 increased $8.7 million to $28.4 million from $19.7 million for the comparable period in 2010.  The increased tax expense for the three and six months ended June 30, 2011 was primarily attributable to the decrease in unrecognized tax benefits recorded in the second quarter of 2010.

Management’s policy is to recognize interest and penalties related to income tax matters as a component of income tax expense.  The liability for unrecognized tax benefits and related reserves as of June 30, 2011 and December 31, 2010, included accrued interest and penalties of $27.9 million and $26.2 million, respectively.  Tax expense for the three months ended June 30, 2011 and 2010 included interest and penalties of $0.9 million and $0.8 million, respectively. Tax expense for each of the six months ended June 30, 2011 and 2010 included interest and penalties of $1.7 million.

Liquidity and Capital Resources

Cash and Cash Equivalents

During the six months ended June 30, 2011, cash and cash equivalents increased $75.4 million primarily due to the following:

·On March 24, 2011, we issued $250 million aggregate principal amount of 7.625% senior secured notes due 2016 priced for purposes of resale at 104.5% of the aggregate principal amount;

·In March 2011, we paid approximately $21.4 million for bonuses and commissions earned throughout 2010; and

·In June 2011, we acquired Peak Energy Services Ltd. for a purchase price of approximately $205.1 million, including the assumption of approximately $38.4 million of Peak net debt which we paid in full on the acquisition date.

We intend to use our existing cash and cash equivalents, marketable securities and cash flow from operations to provide for our working capital needs, to fund capital expenditures and for potential acquisitions (including approximately $140.0 million for Destiny Resources Services and two other proposed acquisitions discussed in Note 16, “Additional Acquisitions,” to our consolidated financial statements included in Item 1 of this report.)  We anticipate that our cash flow provided by operating activities will provide the necessary funds on a short- and long-term basis to meet operating cash requirements.

We had accrued environmental liabilities as of June 30, 2011 of approximately $172.1 million, substantially all of which we assumed in connection with our acquisition of the CSD assets in September 2002, Teris LLC in 2006, and one of the two solvent recycling facilities we purchased from Safety-Kleen Systems, Inc. in 2008. We anticipate our environmental liabilities will be payable over many years and that cash flow from operations will generally be sufficient to fund the payment of such liabilities when required.

37

However, events not anticipated (such as future changes in environmental laws and regulations) could require that such payments be made earlier or in greater amounts than currently anticipated, which could adversely affect our results of operations, cash flow and financial condition.

We assess our liquidity in terms of our ability to generate cash to fund our operating, investing and financing activities. Our primary ongoing cash requirements will be to fund operations, capital expenditures, interest payments and investments in line with our business strategy. We believe our future operating cash flows will be sufficient to meet our future operating and investing cash needs. Furthermore, the existing cash balances and the availability of additional borrowings under our revolving credit facility provide additional potential sources of liquidity should they be required.

Cash Flows for the six months ended June 30, 2011

Cash from operating activities in the first six months of 2011 was $75.6 million, a decrease of $22.3%, or $21.7 million, compared with cash from operating activities in the first six months of 2010. The change was primarily the result of a net reduction in certain working capital items and a decrease in income from operations.

Cash used for investing activities in the first six months of 2011 was $267.2 million, an increase of 772.3%, or $236.5 million, compared with cash used for investing activities in the first six months of 2010.  The increase was due primarily from the acquisition of Peak resulting in year-over-year higher costs associated with additions to property, plant and equipment and acquisitions.

Cash from financing activities in the first six months of 2011 was $265.5 million, compared with cash used for financing activities of $3.4 million in the first six months of 2010. The change was primarily the result of the issuance of $250.0 million aggregate principal amount of 7.625% senior secured notes on March 24, 2011.

Cash Flows for the six months ended June 30, 2010

Cash from operating activities in the first six months of 2010 was $97.3 million, an increase of 98.4%, or $48.3 million, compared with cash from operating activities in the first six months of 2009. The change was primarily related to the activity from the Gulf oil spill which resulted in an increase in income from operations and an increase in accounts payable offset by a net increase in accounts receivable.

Cash used for investing activities in the first six months of 2010 was $30.6 million, a decrease of 25.3%, or $10.4 million, compared with cash used for investing activities in the first six months of 2009.  The decrease resulted primarily from proceeds related to the divestitures of the Pembina Area Landfill and the mobile industrial health business.

Cash used for financing activities in the first six months of 2010 was $3.4 million, a decrease of 23.3%, or $1.0 million, compared with cash used for financing activities in the first six months of 2009. The reduction was primarily due to recording a payment on acquired debt in the 2009 financing activities.

Financing Arrangements

The financing arrangements and principal terms of our $520.0 million principal amount of senior secured notes which were outstanding at June 30, 2011, and our amended $250.0 million revolving credit facility are discussed further in Note 9, “Financing Arrangements,” to our financial statements included in Item 1 of this report.

As of June 30, 2011, we were in compliance with the covenants of our debt agreements, and we believe it is reasonably likely that we will continue to meet such covenants.

Liquidity Impacts of Uncertain Tax Positions

As discussed in Note 10, “Income Taxes,” to our financial statements included in Item 1 of this report, we have recorded as of June 30, 2011, $67.5 million of unrecognized tax benefits and related reserves, including $21.3 million of potential interest and $6.6 million of potential penalties. These liabilities are classified as “unrecognized tax benefits and other long-term liabilities” in our consolidated balance sheets. We are not able to reasonably estimate when we would make any cash payments to settle these liabilities. However, we believe no material cash payments will be required in the next 12 months.

38

Auction Rate Securities

As of June 30, 2011, our long-term investments included $5.3 million of available for sale auction rate securities. With the liquidity issues experienced in global credit and capital markets, these auction rate securities have experienced multiple failed auctions and as a result are currently not liquid. The auction rate securities are secured by student loans substantially insured by the Federal Family Education Loan Program, maintain the highest credit rating of AAA, and continue to pay interest according to their stated terms with interest rates resetting generally every 28 days.

We believe we have sufficient liquidity to fund operations and do not plan to sell our auction rate securities in the foreseeable future at an amount below the original purchase value.  In the unlikely event that we need to access the funds that are in an illiquid state, we may not be able to do so without a possible loss of principal until a future auction for these investments is successful, another secondary market evolves for these securities, they are redeemed by the issuer, or they mature. If we were unable to sell these securities in the market or they are not redeemed, we could be required to hold them to maturity. These securities are currently reflected at their fair value utilizing a discounted cash flow analysis or significant other observable inputs. As of June 30, 2011, we have recorded an unrealized pre-tax loss of $0.4 million, which we assess as temporary. We will continue to monitor and evaluate these investments on an ongoing basis for other than temporary impairment and record an adjustment to earnings if and when appropriate.

39

ITEM 3.QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

In the normal course of business, we are exposed to market risks, including changes in interest rates, certain commodity prices, and certain foreign currency rates, primarily the Canadian dollar. Our philosophy in managing interest rate risk is to borrow at fixed rates for longer time horizons to finance non-current assets and to borrow (to the extent, if any, required) at variable rates for working capital and other short-term needs. We therefore have not entered into derivative or hedging transactions, nor have we entered into transactions to finance off-balance sheet debt. The following table provides information regarding our fixed rate borrowings at June 30, 2011 (in thousands):

Scheduled Maturity Dates	Six Months Remaining 2011			2012			2013			2014			2015			Thereafter			Total
Senior secured notes	$	—		$	—		$	—		$	—		$	—		$	520,000		$	520,000
Capital lease obligations	5,715			5,602			2,531			1,596			185			—			15,629
	$	5,715		$	5,602		$	2,531		$	1,596		$	185		$	520,000		$	535,629
Weighted average interest rate on fixed rate borrowings	7.6		%	7.6		%	7.6		%	7.6		%	7.6		%	7.6		%

In addition to the fixed rate borrowings described in the above table, we had at June 30, 2011 variable rate instruments that included a revolving credit facility with maximum borrowings of up to $250.0 million (with a $110.0 million sub-limit for letters of credit).

We view our investment in our foreign subsidiaries as long-term; thus, we have not entered into any hedging transactions between any two foreign currencies or between any of the foreign currencies and the U.S. dollar. During 2011, the Canadian subsidiaries transacted approximately 3.2% of their business in U.S. dollars and at any period end have cash on deposit in U.S. dollars and outstanding U.S. dollar accounts receivable related to these transactions. These cash and receivable accounts are vulnerable to foreign currency translation gains or losses. Exchange rate movements also affect the translation of Canadian generated profits and losses into U.S. dollars. Had the Canadian dollar been 10.0% stronger or weaker against the U.S. dollar, we would have reported increased or decreased net income of $0.3 million and $1.9 million for the three months ended June 30, 2011 and 2010, respectively.  Had the Canadian dollar been 10.0% stronger or weaker against the U.S. dollar, we would have reported increased or decreased net income of $0.1 million and $2.4 million for the six months ended June 30, 2011 and 2010, respectively.

At June 30, 2011, $5.3 million of our noncurrent investments were auction rate securities. While we are uncertain as to when the liquidity issues relating to these investments will improve, we believe these issues will not materially impact our ability to fund our working capital needs, capital expenditures, or other business requirements.

We are subject to minimal market risk arising from purchases of commodities since no significant amount of commodities are used in the treatment of hazardous waste or providing energy and industrial services.

ITEM 4.CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

Based on an evaluation under the supervision and with the participation of our management, including our Chief Executive Officer and Chief Financial Officer, as of the end of the period covered by this Quarterly Report, our Chief Executive Officer and Chief Financial Officer have concluded that our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)) were effective as of June 30, 2011 to ensure that information required to be disclosed by us in reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in Securities and Exchange Commission rules and forms and 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.

Changes in Internal Control over Financial Reporting

There were no changes in the Company’s internal control over financial reporting identified in connection with the evaluation required by paragraph (d) of Exchange Act Rules 13a-15 or 15d-15 that was conducted during the last fiscal quarter that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

40

CLEAN HARBORS, INC. AND SUBSIDIARIES

PART II—OTHER INFORMATION

Item 1—Legal Proceedings

See Note 13, “Commitments and Contingencies,” to the financial statements included in Item 1 of this report, which description is incorporated herein by reference.

Item 1A—Risk Factors

Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2010 includes a detailed discussion of risk factors which investors should carefully consider before investing in our securities. The information below updates such discussion with respect to recent changes which have occurred in such risk factors, particularly as a result of our acquisition on June 10, 2011 of Peak Energy Services Ltd., or “Peak,” our issuance on March 24, 2011 of $250.0 million aggregate principal amount of 7.625% senior secured notes, or the “new notes,” and the increase on May 31, 2011 in our revolving credit facility from $120.0 million to $250.0 million. The new notes were issued in addition to the $270.0 million of then outstanding senior notes and are treated as a single class for all purposes including, without limitation, waivers, amendments, redemptions and other offers to purchase. This information should be read in conjunction with the risk factors and other information disclosed in our Annual Report on Form 10-K and this report on Form 10-Q.

Risks Relating to the Peak Acquisition

If we are unable to successfully integrate Peak’s business and operations and realize synergies in the expected time frame, our future results would be adversely affected.

Our integration of Peak’s business and operations into our business and operations will require implementation of appropriate operations, management and financial reporting systems and controls. We may experience difficulties in effectively implementing these and other systems and integrating Peak’s systems and operations, and the integration process may be costly and time-consuming. The integration of Peak will require the focused attention of both Clean Harbors’ and Peak’s management teams, including a significant commitment of their time and resources. The need for both Clean Harbors’ and Peak’s managements to focus on integration matters could have a material and adverse impact on the revenues and operating results of the combined company. The success of the acquisition will depend, in part, on the combined company’s ability to realize the anticipated benefits from combining the businesses of Clean Harbors and Peak through cost reductions in overhead, greater efficiencies, increased utilization of support facilities and the adoption of mutual best practices between the two companies. To realize these anticipated benefits, however, the businesses of Clean Harbors and Peak must be successfully combined.

If the combined company is not able to achieve these objectives, the anticipated benefits to us of the acquisition may not be realized fully or at all or may take longer to realize than expected. It is possible that the integration process could result in the loss of key employees, as well as the disruption of each company’s ongoing businesses, failure to implement the business plan for the combined businesses, unanticipated issues in integrating manufacturing, logistics, information, communications and other systems, unanticipated changes in applicable laws and regulations, operating risks inherent in our business or inconsistencies in standards, controls, procedures and policies or other unanticipated issues, expenses and liabilities, any or all of which could adversely affect our ability to maintain relationships with our and Peak’s customers and employees or to achieve the anticipated benefits of the acquisition. These integration matters could have a material adverse effect on our business.

Our acquisition of Peak may expose us to unknown liabilities.

Because we acquired all of Peak’s outstanding common shares, our investment in Peak will be subject to all of Peak’s liabilities other than Peak’s debt which we paid at the time of the acquisition. If there are unknown Peak obligations, including contingent liabilities, our business could be materially and adversely affected. We may learn additional information about Peak’s business that adversely affects us, such as unknown liabilities, issues relating to internal controls over financial reporting, issues that could affect our ability to comply with the Sarbanes-Oxley Act or issues that could affect our ability to comply with other applicable laws. As a result, our acquisition of Peak might not be successful. Among other things, if Peak’s liabilities are greater than expected, or if there are obligations of which we were not aware of the time of completion of the acquisition, our business could be materially and adversely affected.

41

We may make further acquisitions in the future with the goal of expanding our business. However, we may be unable to complete such transactions and, if completed, such transactions may not improve our business or may pose significant risks and could have a negative effect on our operations.

We have in the past significantly increased the size of our Company and the types of services we offer to our customers through acquisitions. Since December 31, 2005, we have acquired two public companies (Eveready Inc. in July 2009, and Peak Energy Services Ltd. in June 2011) and 11 private companies. We may in the future make additional acquisitions, including our proposed acquisition of two additional private companies for which we signed, in May and July 2011, acquisition agreements providing for a total combined purchase price of approximately $100.0 million. Each such proposed acquisition is subject to customary closing conditions and no assurance can be given that either or both of the proposed acquisitions will be consummated. Except for those two proposed additional acquisitions, we may not be able to identify and negotiate the potential acquisition of suitable acquisition candidates on terms and conditions favorable to us.

Our ability to achieve the benefits from any potential future acquisitions, including cost savings and operating efficiencies, depends in part on our ability to successfully integrate the operations of such acquired businesses with our operations. The integration of acquired businesses and other assets may require significant management time and company resources that would otherwise be available for the ongoing management of our existing operations. While we have had success integrating our prior acquisitions described above, each acquisition presents unique objectives, circumstances and challenges.

Any properties or facilities that we acquire may also be subject to unknown liabilities, such as undisclosed environmental contamination, for which we may have no recourse, or only limited recourse, to the former owners of such properties. As a result, if a liability were asserted against us based upon ownership of an acquired property, we might be required to pay significant sums to settle it, which could adversely affect our financial results and cash flow.

Risks Relating to Our Level of Debt and the Notes

Our substantial levels of outstanding debt and letters of credit could adversely affect our financial condition and ability to fulfill our obligations under the notes.

As of June 30, 2011, after giving effect to our sale of the new notes on March 24, 2011, and payment of related fees and expenses, and the increase on May 31, 2011 in the revolving credit facility to $250.0 million from $120.0 million, we had outstanding $525.0 million of debt and $82.3 million of letters of credit. Our substantial levels of outstanding debt and letters of credit may:

·adversely impact our ability to obtain additional financing in the future for working capital, capital expenditures, acquisitions or other general corporate purposes or to repurchase the notes from holders upon a change of control;

·require us to dedicate a substantial portion of our cash flow to the payment of interest on our debt and fees on our letters of credit, which reduces the availability of our cash flow to fund working capital, capital expenditures, acquisitions and other general corporate purposes;

·subject us to the risk of increased sensitivity to interest rate increases based upon variable interest rates, including our borrowings (if any) under our new revolving credit facility;

·increase the possibility of an event of default under the financial and operating covenants contained in our debt instruments; and

·limit our ability to adjust to rapidly changing market conditions, reduce our ability to withstand competitive pressures and make us more vulnerable to a downturn in general economic conditions of our business than our competitors with less debt.

Our ability to make scheduled payments of principal or interest with respect to our debt, including the notes, any revolving loans and our capital leases, and to pay fee obligations with respect to our letters of credit, will depend on our ability to generate cash and on our future financial results. Our ability to generate cash depends on, among other things, the demand for our services, which is subject to market conditions in the environmental, energy and industrial services industries, the occurrence of events requiring major remedial projects, changes in government environmental regulation, general economic conditions, and financial, competitive, regulatory and other factors affecting our operations, many of which are beyond our control. Our operations may not generate sufficient cash flow, and future borrowings may not be available under our revolving credit facility or otherwise, in an amount sufficient to enable us to pay our debt and fee obligations respecting our letters of credit, or to fund our other liquidity needs. If we are

42

unable to generate sufficient cash flow from operations in the future to service our debt and letter of credit fee obligations, we might be required to refinance all or a portion of our existing debt and letter of credit facilities or to obtain new or additional such facilities. However, we might not be able to obtain any such new or additional facilities on favorable terms or at all.

Despite our substantial levels of outstanding debt and letters of credit, we could incur substantially more debt and letter of credit obligations in the future.

Although our revolving credit agreement and the indenture governing the notes contain restrictions on the incurrence of additional indebtedness (including, for this purpose, reimbursement obligations under outstanding letters of credit), these restrictions are subject to a number of qualifications and exceptions and the additional amount of indebtedness which we might incur in the future in compliance with these restrictions could be substantial. In particular, we had available at June 30, 2011 up to an additional approximately $167.7 million for purposes of additional borrowings and letters of credit. The indenture governing the notes also allows us to borrow significant amounts of money from other sources. These restrictions would also not prevent us from incurring obligations (such as operating leases) that do not constitute “indebtedness” as defined in the relevant agreements. To the extent we incur in the future additional debt and letter of credit obligations, the related risks will increase.

Item 2—Unregistered Sale of Equity Securities and Use of Proceeds—None.

Item 3—Defaults Upon Senior Securities—None.

Item 4—Reserved

Item 5—Other Information—None.

Item 6—Exhibits

Item No.	Description	Location
31.1	Rule 13a-14a/15d-14(a) Certification of the CEO Alan S. Mckim	Filed herewith
31.2	Rule 13a-14a/15d-14(a) Certification of the CFO James M. Rutledge
32	Section 1350 Certifications	Filed herewith
101	Interactive Data Files Pursuant to Rule 405 of Regulation S-T: Financial statements from the quarterly report on Form 10-Q of Clean Harbors, Inc. for the quarter ended June 30, 2011, formatted in XBRL: (i) Consolidated Balance Sheets, (ii) Unaudited Consolidated Statements of Income, (iii) Unaudited Consolidated Statements of Cash Flows, (iv) Unaudited Consolidated Statements of Stockholders’ Equity, and (v) Notes to Unaudited Consolidated Financial Statements.	*

* These interactive data files are furnished and deemed not filed or part of a registration statement or prospectus for purposes of Sections 11 or 12 of the Securities Act of 1933, as amended, are deemed not filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and otherwise are not subject to liability under those sections.

43

CLEAN HARBORS, INC. AND SUBSIDIARIES

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.

	CLEAN HARBORS, INC.
	Registrant
	By:	/s/  ALAN S. MCKIM
		Alan S. McKim
		President and Chief Executive Officer
Date: August 9, 2011
	By:	/s/  JAMES M. RUTLEDGE
		James M. Rutledge
		Vice Chairman and Chief Financial Officer
Date: August 9, 2011

44

EX-31.1

EXHIBIT 31.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER

I, Alan S. McKim, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Clean Harbors, 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(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

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

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

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

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

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

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

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

/s/ Alan S. McKim

Alan S. McKim

President and Chief Executive Officer

Date: August 9, 2011

EX-31.2

Exhibit 31.2

CERTIFICATION OF CHIEF FINANCIAL OFFICER

I, James M. Rutledge, certify that:

1.I have reviewed this quarterly report on Form 10-Q of Clean Harbors, 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(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

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

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

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

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

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

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

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

/s/ James M. Rutledge

James M. Rutledge

Vice Chairman and Chief Financial Officer

Date: August 9, 2011

EX-32

EXHIBIT 32

CLEAN HARBORS, INC. AND SUBSIDIARIES

CERTIFICATION PURSUANT TO
SECTION 1350, CHAPTER 63 OF TITLE 18, UNITED STATES CODE,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES OXLEY ACT OF 2002

Pursuant to 18 U.S.C. §1350, each of the undersigned certifies that, to his knowledge, this Quarterly Report on Form 10-Q for the period ended June 30, 2011 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and the information contained in this report fairly presents, in all material respects, the financial condition and results of operations of Clean Harbors, Inc.

	/s/ Alan S. McKim
	Alan S. McKim
	Chief Executive Officer
Date: August 9, 2011
	/s/ James M. Rutledge
	James M. Rutledge
	Vice Chairman and Chief Financial Officer
Date: August 9, 2011

XML



SEGMENT REPORTING (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010
SEGMENT REPORTING
Reporting segments number			4
Number of operations for which the revenues are insignificant			2
Segment reporting information
Third party revenues	$ 447,235	$ 471,639	$ 882,197	$ 826,535
Direct revenues	447,235	471,639	882,197	826,535
Property, plant and equipment, net	848,276		848,276		655,394
Goodwill	88,511		88,511		60,252
Permits and other intangibles, net	127,068		127,068		114,400
Total assets	1,965,080		1,965,080		1,602,475
Reconciliation to Consolidated Statements of Income:
Accretion of environmental liabilities	2,407	2,602	4,796	5,304
Depreciation and amortization	26,936	22,105	52,396	44,779
Income from operations	51,884	71,923	91,626	95,542
Other income	(2,868)	(2,708)	(5,767)	(3,154)
Interest expense, net of interest income	10,642	7,646	17,120	14,574
Income from continuing operations, before provision for income taxes	44,110	66,985	80,273	84,122
Reportable segments
Segment reporting information
Third party revenues	487,651	471,639	1,314,186	826,535
Direct revenues	487,651	471,639	1,314,186	826,535
Adjusted EBITDA, Total	81,227	96,630	148,818	145,625
Property, plant and equipment, net	848,276		848,276		655,394
Total Intangible assets	215,579		215,579		174,652
Total assets	1,965,080		1,965,080		1,602,475
Technical Services
Segment reporting information
Third party revenues	202,330	167,409	387,777	320,936
Intersegment revenues, net	4,210	7,137	9,351	12,076
Direct revenues	206,540	174,546	397,128	333,012
Adjusted EBITDA, Total	59,614	44,385	104,951	77,565
Property, plant and equipment, net	266,968		266,968		259,582
Goodwill	33,654		33,654		33,448
Permits and other intangibles, net	65,089		65,089		66,075
Total Intangible assets	98,743		98,743		99,523
Total assets	529,173		529,173		525,286
Field Services
Segment reporting information
Third party revenues	72,615	162,723	134,874	213,376
Intersegment revenues, net	(5,623)	(9,086)	(9,574)	(13,263)
Direct revenues	66,992	153,637	125,300	200,113
Adjusted EBITDA, Total	12,515	41,603	18,846	46,634
Property, plant and equipment, net	34,821		34,821		32,311
Goodwill	3,088		3,088		3,088
Permits and other intangibles, net	3,491		3,491		3,651
Total Intangible assets	6,579		6,579		6,739
Total assets	44,494		44,494		35,253
Field Services | Gulf of Mexico
Segment reporting information
Third party revenues		108,600		108,600
Industrial Services
Segment reporting information
Third party revenues	111,376	98,804	219,959	191,124
Intersegment revenues, net	(1,087)	(405)	(3,960)	(1,631)
Direct revenues	110,289	98,399	215,999	189,493
Adjusted EBITDA, Total	25,862	24,122	49,205	43,982
Property, plant and equipment, net	221,852		221,852		180,781
Goodwill	28,583		28,583		10,934
Permits and other intangibles, net	18,147		18,147		17,906
Total Intangible assets	46,730		46,730		28,840
Total assets	279,602		279,602		221,472
Oil and Gas Field Services
Segment reporting information
Third party revenues	60,617	42,663	139,251	101,163
Intersegment revenues, net	2,964	2,715	5,157	3,622
Direct revenues	63,581	45,378	144,408	104,785
Adjusted EBITDA, Total	8,427	5,966	23,092	17,462
Property, plant and equipment, net	283,384		283,384		151,244
Goodwill	23,186		23,186		12,782
Permits and other intangibles, net	40,341		40,341		26,768
Total Intangible assets	63,527		63,527		39,550
Total assets	419,870		419,870		272,479
Corporate Items
Segment reporting information
Third party revenues	297	40	336	(64)
Intersegment revenues, net	(464)	(361)	(974)	(804)
Direct revenues	(167)	(321)	(638)	(868)
Adjusted EBITDA, Total	(25,191)	(19,446)	(47,276)	(40,018)
Property, plant and equipment, net	41,251		41,251		31,476
Total assets	691,941		691,941		547,985
United States
Segment reporting information
Total assets	1,060,846		1,060,846		933,550
Canada
Segment reporting information
Total assets	899,986		899,986		664,534
Other foreign
Segment reporting information
Total assets	$ 4,248		$ 4,248		$ 4,391

XML



CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Revenues	$ 447,235	$ 471,639	$ 882,197	$ 826,535
Cost of revenues (exclusive of items shown separately below)	307,754	324,280	620,331	584,697
Selling, general and administrative expenses	58,254	50,729	113,048	96,213
Accretion of environmental liabilities	2,407	2,602	4,796	5,304
Depreciation and amortization	26,936	22,105	52,396	44,779
Income from operations	51,884	71,923	91,626	95,542
Other income	2,868	2,708	5,767	3,154
Interest expense, net of interest income of $302 and $546 for the quarter and year-to-date ended 2011 and $165 and $267 for the quarter and year-to-date ended 2010, respectively	(10,642)	(7,646)	(17,120)	(14,574)
Income from continuing operations, before provision for income taxes	44,110	66,985	80,273	84,122
Provision for income taxes	14,954	11,468	28,387	18,557
Income from continuing operations	29,156	55,517	51,886	65,565
Income from discontinued operations, net of tax		2,412		2,794
Net income	$ 29,156	$ 57,929	$ 51,886	$ 68,359
Earnings per share:
Basic (in dollars per share)	$ 0.55	$ 1.10	$ 0.98	$ 1.30
Diluted (in dollars per share)	$ 0.55	$ 1.10	$ 0.97	$ 1.29
Weighted average common shares outstanding (in shares)	52,939	52,581	52,869	52,542
Weighted average common shares outstanding plus potentially dilutive common shares (in shares)	53,362	52,849	53,261	52,796

XML



CONSOLIDATED STATEMENTS OF INCOME (Parenthetical) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
CONSOLIDATED STATEMENTS OF INCOME
Interest expense, interest income	$ 302	$ 165	$ 546	$ 267

XML



GUARANTOR AND NON-GUARANTOR SUBSIDIARIES FINANCIAL INFORMATION (Details 3) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Consolidating statement of income
Revenues	$ 447,235	$ 471,639	$ 882,197	$ 826,535
Cost of revenues (exclusive of items shown separately below)	307,754	324,280	620,331	584,697
Selling, general and administrative expenses	58,254	50,729	113,048	96,213
Accretion of environmental liabilities	2,407	2,602	4,796	5,304
Depreciation and amortization	26,936	22,105	52,396	44,779
Income from operations	51,884	71,923	91,626	95,542
Other income	2,868	2,708	5,767	3,154
Interest expense, net of interest income of $302 and $546 for the quarter and year-to-date ended 2011 and $165 and $267 for the quarter and year-to-date ended 2010, respectively	(10,642)	(7,646)	(17,120)	(14,574)
Income from continuing operations, before provision for income taxes	44,110	66,985	80,273	84,122
Provision for income taxes	14,954	11,468	28,387	18,557
Income from continuing operations	29,156	55,517	51,886	65,565
Income from discontinued operations, net of tax		2,412		2,794
Net income	29,156	57,929	51,886	68,359
Clean Harbors, Inc.
Consolidating statement of income
Selling, general and administrative expenses	8	25	50	50
Income from operations	(8)	(25)	(50)	(50)
Interest expense, net of interest income of $302 and $546 for the quarter and year-to-date ended 2011 and $165 and $267 for the quarter and year-to-date ended 2010, respectively	(10,630)	(7,229)	(17,306)	(14,472)
Equity in earnings of subsidiaries	43,534	74,197	76,865	93,215
Income from continuing operations, before provision for income taxes	32,896	66,943	59,509	78,693
Provision for income taxes	3,740	9,014	7,623	10,334
Income from continuing operations		57,929		68,359
Net income	29,156	57,929	51,886	68,359
U.S. Guarantor Subsidiaries
Consolidating statement of income
Revenues	263,194	322,580	511,561	523,423
Cost of revenues (exclusive of items shown separately below)	178,057	214,558	353,495	361,408
Selling, general and administrative expenses	38,621	36,973	74,732	69,044
Accretion of environmental liabilities	2,090	2,320	4,177	4,740
Depreciation and amortization	12,693	11,478	25,691	23,527
Income from operations	31,733	57,251	53,466	64,704
Other income	394	38	3,730	314
Interest expense, net of interest income of $302 and $546 for the quarter and year-to-date ended 2011 and $165 and $267 for the quarter and year-to-date ended 2010, respectively	5	36	173	49
Equity in earnings of subsidiaries	24,411	22,155	31,712	26,816
Intercompany interest income (expense)	8,970	8,329	17,700	16,207
Income from continuing operations, before provision for income taxes	65,513	87,809	106,781	108,090
Provision for income taxes	6,849	12,060	13,176	14,364
Income from continuing operations		75,749		93,726
Net income	58,664	75,749	93,605	93,726
Foreign Non-Guarantor Subsidiaries
Consolidating statement of income
Revenues	189,238	147,607	382,026	306,928
Cost of revenues (exclusive of items shown separately below)	134,894	108,270	278,226	227,105
Selling, general and administrative expenses	19,625	13,731	38,266	27,119
Accretion of environmental liabilities	317	282	619	564
Depreciation and amortization	14,243	10,627	26,705	21,252
Income from operations	20,159	14,697	38,210	30,888
Other income	2,474	2,670	2,037	2,840
Interest expense, net of interest income of $302 and $546 for the quarter and year-to-date ended 2011 and $165 and $267 for the quarter and year-to-date ended 2010, respectively	(17)	(453)	13	(151)
Intercompany dividend income (expense)	3,537	3,326	6,993	6,612
Intercompany interest income (expense)	(8,970)	(8,329)	(17,700)	(16,207)
Income from continuing operations, before provision for income taxes	17,183	11,911	29,553	23,982
Provision for income taxes	4,365	(9,606)	7,588	(6,141)
Income from continuing operations		21,517		30,123
Income from discontinued operations, net of tax		2,412		2,794
Net income	12,818	23,929	21,965	32,917
Consolidating Adjustments
Consolidating statement of income
Revenues	(5,197)	1,452	(11,390)	(3,816)
Cost of revenues (exclusive of items shown separately below)	(5,197)	1,452	(11,390)	(3,816)
Equity in earnings of subsidiaries	(67,945)	(96,352)	(108,577)	(120,031)
Intercompany dividend income (expense)	(3,537)	(3,326)	(6,993)	(6,612)
Income from continuing operations, before provision for income taxes	(71,482)	(99,678)	(115,570)	(126,643)
Income from continuing operations		(99,678)		(126,643)
Net income	$ (71,482)	$ (99,678)	$ (115,570)	$ (126,643)

XML



SIGNIFICANT ACCOUNTING POLICIES (Policies)

6 Months Ended

Jun. 30, 2011

SIGNIFICANT ACCOUNTING POLICIES

Property, Plant and Equipment (excluding landfill assets)

Property, plant and equipment are stated at cost and include amounts capitalized under capital lease obligations. Expenditures for major renewals and improvements which extend the life of the asset are capitalized. Items of an ordinary repair or maintenance nature are charged directly to operating expense as incurred. During the construction and development period of an asset, the costs incurred, including applicable interest costs, are classified as construction-in-progress. Interest in the amount of $0.4 million and $0.2 million was capitalized to fixed assets during the six months ended June 30, 2011, and 2010, respectively. Depreciation and amortization expense was $42.0 million and $35.9 million for the six months ended June 30, 2011, and 2010, respectively.

The Company depreciates and amortizes the cost of these assets, using the straight-line method as follows:

Asset Classification	Estimated Useful Life
Buildings and building improvements
Buildings	30—40 years
Land, leasehold and building improvements	5—40 years
Camp equipment	12—15 years
Vehicles	3—12 years
Equipment
Capitalized software and computer equipment	3 years
Solar equipment	20 years
Containers and railcars	15—20 years
All other equipment	3—10 years
Furniture and fixtures	5—8 years

Land, leasehold and building improvements have a weighted average life of 9.3 years.

Camp equipment consists of industrial lodging facilities that are utilized in the Company’s Industrial Services segment to provide lodging services to companies in the refinery and petrochemical industries.

Solar equipment consists of a solar array that is used to provide electric power for a continuously operating groundwater decontamination pump and treatment system at a closed and capped landfill located in New Jersey. The solar array was installed and became operable during the second quarter of 2011.

The Company recognizes an impairment in the carrying value of long-lived assets when the expected future undiscounted cash flows derived from the assets are less than their carrying value. For the three and six months ended June 30, 2011, and 2010, the Company has not recorded impairment charges related to long-lived assets.

XML



CONSOLIDATED BALANCE SHEETS (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 377,576	$ 302,210
Marketable securities	128	3,174
Accounts receivable, net of allowances aggregating $15,729 and $23,704, respectively	352,809	332,678
Unbilled accounts receivable	30,588	19,117
Deferred costs	6,289	6,891
Prepaid expenses and other current assets	32,828	28,939
Supplies inventories	47,270	44,546
Deferred tax assets	18,884	14,982
Total current assets	866,372	752,537
Property, plant and equipment:
Land	32,782	31,654
Asset retirement costs (non-landfill)	2,371	2,242
Landfill assets	52,514	54,519
Buildings and improvements	158,705	147,285
Camp equipment	99,611	62,717
Vehicles	206,388	162,397
Equipment	675,494	537,937
Furniture and fixtures	3,700	2,293
Construction in progress	43,150	33,005
Property, plant and equipment, gross	1,274,715	1,034,049
Less-accumulated depreciation and amortization	426,439	378,655
Total property, plant and equipment, net	848,276	655,394
Other assets:
Long-term investments	5,311	5,437
Deferred financing costs	15,061	7,768
Goodwill	88,511	60,252
Permits and other intangibles, net of accumulated amortization of $67,035 and $60,633, respectively	127,068	114,400
Other	14,481	6,687
Total other assets	250,432	194,544
Total assets	1,965,080	1,602,475
Current liabilities:
Current portion of capital lease obligations	6,520	7,954
Accounts payable	156,106	136,978
Deferred revenue	28,462	30,745
Accrued expenses	118,716	116,089
Current portion of closure, post-closure and remedial liabilities	15,626	14,518
Total current liabilities	325,430	306,284
Other liabilities:
Closure and post-closure liabilities, less current portion of $6,313 and $5,849, respectively	28,595	32,830
Remedial liabilities, less current portion of $9,313 and $8,669, respectively	127,859	128,944
Long-term obligations	524,994	264,007
Capital lease obligations, less current portion	9,109	6,839
Unrecognized tax benefits and other long-term liabilities	91,725	82,744
Total other liabilities	782,282	515,364
Common stock, $.01 par value:
Authorized 80,000,000; shares issued and outstanding 52,986,122 and 52,772,392 shares, respectively	530	528
Treasury stock	(4,274)	(2,467)
Shares held under employee participation plan	(777)	(777)
Additional paid-in capital	495,237	488,384
Accumulated other comprehensive income	70,366	50,759
Accumulated earnings	296,286	244,400
Total stockholders' equity	857,368	780,827
Total liabilities and stockholders' equity	$ 1,965,080	$ 1,602,475

XML



STOCK-BASED COMPENSATION (Details) (USD $)	1 Months Ended	3 Months Ended	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2011	Jun. 30, 2011
Awards granted
Shares		224,162	224,162
Authorized stock split declared, number of shares per each share held	2		2
Restricted stock awards
Awards granted
Shares		154,214	154,214
Weighted-Average Grant-Date Fair Value (in dollars per share)		$ 48.43	$ 48.43
Performance stock awards
Awards granted
Shares		69,948	69,948
Weighted-Average Grant-Date Fair Value (in dollars per share)		$ 48.13	$ 48.13

XML



FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Jun. 30, 2011

FAIR VALUE MEASUREMENTS

Fair value of assets measured on a recurring basis

	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Balance at June 30, 2011
Auction rate securities	$	—	$	—	$	5,311	$	5,311
Marketable securities	$	128	$	—	$	—	$	128

	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Balance at December 31, 2010
Auction rate securities	$	—	$	—	$	5,437	$	5,437
Marketable securities	$	3,174	$	—	$	—	$	3,174

Changes in auction rate securities measured at fair value on a recurring basis

	Three Months Ended June 30,
	2011			2010
Balance at April 1,	$	5,379		$	6,503
Sale of auction rate securities	—			(1,300		)
Unrealized (losses) gains included in other comprehensive income	(68		)	112
Balance at June 30,	$	5,311		$	5,315

	Six Months Ended June 30,
	2011			2010
Balance at January 1,	$	5,437		$	6,503
Sale of auction rate securities	—			(1,300		)
Unrealized (losses) gains included in other comprehensive income	(126		)	112
Balance at June 30,	$	5,311		$	5,315

XML



EARNINGS PER SHARE (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	1 Months Ended	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Numerator for basic and diluted earnings per share:
Income from continuing operations		$ 29,156	$ 55,517	$ 51,886	$ 65,565
Income from discontinued operations			2,412		2,794
Net income		$ 29,156	$ 57,929	$ 51,886	$ 68,359
Denominator:
Basic shares outstanding (in shares)		52,939	52,581	52,869	52,542
Dilutive effect of equity-based compensation awards (in shares)		423	268	392	254
Dilutive shares outstanding (in shares)		53,362	52,849	53,261	52,796
Basic earnings per share:
Income from continuing operations (in dollars per share)		$ 0.55	$ 1.05	$ 0.98	$ 1.25
Income from discontinued operations, net of tax (in dollars per share)			$ 0.05		$ 0.05
Net income (in dollars per share)		$ 0.55	$ 1.10	$ 0.98	$ 1.30
Diluted earnings per share:
Income from continuing operations (in dollars per share)		$ 0.55	$ 1.05	$ 0.97	$ 1.24
Income from discontinued operations, net of tax (in dollars per share)			$ 0.05		$ 0.05
Net income (in dollars per share)		$ 0.55	$ 1.10	$ 0.97	$ 1.29
Authorized stock split declared, number of shares per each share held	2			2
Outstanding performance stock awards
Antidilutive securities
Antidilutive securities not included in calculation of earnings per share (in shares)		70	294	70	294
Stock options
Antidilutive securities
Antidilutive securities not included in calculation of earnings per share (in shares)			36		36

XML



ACCRUED EXPENSES

6 Months Ended

Jun. 30, 2011

ACCRUED EXPENSES

ACCRUED EXPENSES

(6) ACCRUED EXPENSES

Accrued expenses consisted of the following (in thousands):

	June 30, 2011		December 31, 2010
Insurance	$	20,852	$	19,736
Interest	15,149		7,826
Accrued disposal costs	2,123		2,173
Accrued compensation and benefits	39,115		44,545
Income, real estate, sales and other taxes	16,776		19,529
Other	24,701		22,280
	$	118,716	$	116,089

XML



GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

6 Months Ended

Jun. 30, 2011

GOODWILL AND OTHER INTANGIBLE ASSETS

Schedule of changes to goodwill

	2011
Balance at January 1, 2011	$	60,252
Acquired from acquisitions	27,062
Foreign currency translation	1,197
Balance at June 30, 2011	$	88,511

Summary of amortizable other intangible assets

	June 30, 2011							December 31, 2010
	Cost		Accumulated Amortization		Net		Weighted Average Amortization Period (in years)	Cost		Accumulated Amortization		Net		Weighted Average Amortization Period (in years)
Permits	$	105,748	$	44,464	$	61,284	17.7	$	103,493	$	42,430	$	61,063	15.9
Customer relationships	69,781		14,008		55,773		7.0	58,322		10,418		47,904		8.0
Other intangible assets	18,574		8,563		10,011		4.1	13,218		7,785		5,433		3.5
	$	194,103	$	67,035	$	127,068	9.4	$	175,033	$	60,633	$	114,400	9.7

Total amounts assigned and the weighted average amortization period, by major intangible asset classes, related to the Peak acquisition

	Total Amount Assigned		Weighted Average Amortization Period (in years)
Customer relationships	$	10,020	5.3
Other intangibles	4,258		6.0
	$	14,278	5.0

Schedule of expected amortization for the net carrying amount of finite lived intangible assets

Years Ending December 31,	Expected Amortization
2011 (six months)	$	8,607
2012	14,076
2013	13,246
2014	12,597
2015	12,047
Thereafter	66,495
	$	127,068

XML



CLOSURE AND POST-CLOSURE LIABILITIES (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2011
CLOSURE AND POST-CLOSURE LIABILITIES
Balance at the beginning of the period	$ 38,679
New asset retirement obligations	1,169
Accretion	1,654
Changes in estimates recorded to statement of income	(371)
Other changes in estimates recorded to balance sheet	(4,560)
Settlement of obligations	(1,773)
Currency translation and other	110
Balance at the end of the period	34,908
Credit-adjusted risk-free rate (as a percent)	8.79%
Inflation rate (as a percent)	1.01%
Landfill Retirement Liability
CLOSURE AND POST-CLOSURE LIABILITIES
Balance at the beginning of the period	29,756
New asset retirement obligations	1,169
Accretion	1,100
Changes in estimates recorded to statement of income	(400)
Other changes in estimates recorded to balance sheet	(4,681)
Settlement of obligations	(1,467)
Currency translation and other	91
Balance at the end of the period	25,568
Non-Landfill Retirement Liability
CLOSURE AND POST-CLOSURE LIABILITIES
Balance at the beginning of the period	8,923
Accretion	554
Changes in estimates recorded to statement of income	29
Other changes in estimates recorded to balance sheet	121
Settlement of obligations	(306)
Currency translation and other	19
Balance at the end of the period	$ 9,340

XML



BUSINESS COMBINATIONS (Details)	1 Months Ended	3 Months Ended		6 Months Ended
	Jun. 30, 2011 Peak Energy Services Ltd.'s ("Peak") USD ($)	Jun. 30, 2011 Peak Energy Services Ltd.'s ("Peak") USD ($)	Jun. 30, 2010 Peak Energy Services Ltd.'s ("Peak") USD ($)	Jun. 30, 2011 Peak Energy Services Ltd.'s ("Peak") USD ($)	Jun. 30, 2010 Peak Energy Services Ltd.'s ("Peak") USD ($)	Jun. 10, 2011 Peak Energy Services Ltd.'s ("Peak") USD ($)	Jun. 10, 2011 Peak Energy Services Ltd.'s ("Peak") CAD	Jun. 30, 2011 Peak Energy Services Ltd.'s ("Peak") Industrial Services USD ($)	Jun. 30, 2011 Peak Energy Services Ltd.'s ("Peak") Oil and Gas Field Services USD ($)	Jun. 30, 2011 Badger Daylighting Ltd. ("Badger") USD ($)	Jan. 25, 2011 Badger Daylighting Ltd. ("Badger") CAD
Business Combinations
Outstanding common shares acquired (as a percent)						100.00%	100.00%
Percentage of outstanding common shares of acquiree already owned by company (as a percent)						3.15%	3.15%
Cash paid in exchange for acquisition							158,700,000
Cash paid per share in exchange for acquisition (in dollars per share)							0.95
Debt assumed in exchange of acquisition						(38,431,000)	37,500,000
Total consideration for acquisition						205,100,000	200,200,000
Exchange rate translation							0.976057
Number of employees	900
Summary of consideration paid for Peak at the acquisition date
Cash paid for Peak common shares						162,585,000
Fair value of previously owned common shares						4,117,000
Peak, net debt assumed						38,431,000	(37,500,000)
Fair value of consideration transferred						205,100,000	200,200,000
Gain loss recognized in other income previously held as common shares	1,900,000
Fair value of common shares in acquiree						4,100,000
Cash assumed for repayment of outstanding Peak debt						15,700,000
Number of term loan facilities						3	3
Acquisition related costs		600,000		700,000
Summary of recognized amounts of identifiable assets acquired and liabilities assumed
Current assets	45,797,000	45,797,000		45,797,000
Property, plant and equipment	149,344,000	149,344,000		149,344,000
Identifiable intangible assets	14,107,000	14,107,000		14,107,000
Other assets	8,800,000	8,800,000		8,800,000
Current liabilities	(27,717,000)	(27,717,000)		(27,717,000)
Other liabilities	(8,344,000)	(8,344,000)		(8,344,000)
Total identifiable net assets	181,987,000	181,987,000		181,987,000
Goodwill	23,146,000	23,146,000		23,146,000				13,800,000	9,300,000
Total	205,133,000	205,133,000		205,133,000
Customer receivables	33,400,000	33,400,000		33,400,000
Customer receivables, gross amount due	35,300,000	35,300,000		35,300,000
Revenues attributable to Peak, included in the Company's consolidated statements of income		9,600,000		9,600,000
Unaudited pro forma combined summary data
Pro forma combined revenues			494,359,000		881,916,000
Pro forma combined net income			56,488,000		69,148,000
Minimum affirmative percentage of acquiree shareholders vote required for approval of acquisition transaction (as a percent)											66.67%
Maximum amount of obligation of acquiree to reimburse the out of pocket expenses incurred											1,500,000
Reimbursement received from acquiree										$ 1,100,000

XML



BUSINESS COMBINATIONS (Tables)

6 Months Ended

Jun. 30, 2011

BUSINESS COMBINATIONS

Summary of the preliminary purchase price for Peak at the acquisition date

Cash paid for Peak common shares	$	162,585
Fair value of previously owned common shares (1)	4,117
Peak net debt assumed (2)	38,431
Total estimated purchase price	$	205,133

(1) The Company previously owned a 3.15% interest in Peak which was recorded in marketable securities. On June 10, 2011, the Company acquired the remaining outstanding shares of Peak and as a result, the Company remeasured the fair value of its previously held common shares and recognized the resulting gain of $1.9 million in other income. The unrealized gain on the Peak investment was previously recorded in accumulated other comprehensive income. For this purpose, the fair value of the Company’s previous investment in Peak was deemed to be $4.1 million, calculated based on the closing price of Peak’s shares on the Toronto Stock Exchange on the date before the acquisition was publicly announced.

(2)   The outstanding Peak debt, net of $15.7 million of cash assumed, which consisted of three term loan facilities, was paid off on June 10, 2011.

Summary of recognized amounts of identifiable assets acquired and liabilities assumed

	Asset (Liability)
Current assets (i)	$	45,797
Property, plant and equipment	149,344
Identifiable intangible assets	14,107
Other assets	8,800
Current liabilities	(27,717		)
Other liabilities	(8,344		)
Total identifiable net assets	$	181,987
Goodwill (ii)	23,146
Total	$	205,133

(i) The preliminary fair value of the financial assets acquired includes customer receivables with a preliminary fair value of $33.4 million. The gross amount due was $35.3 million.

(ii) Goodwill, which is attributable to expected operating and cross-selling synergies, is not expected to be deductible for tax purposes. Goodwill of $9.3 million and $13.8 million has been recorded in the Oil and Gas Field Services and Industrial Services segments, respectively; however, the amount and the allocation are subject to change pending the finalization of the Company’s valuation.

Unaudited pro forma combined summary data as if Peak had been acquired at the beginning of the periods presented

	Three months ended June 30,		Six months ended June 30,
	2010		2010
Pro forma combined revenues	$	494,359	$	881,916
Pro forma combined net income	$	56,488	$	69,148

XML



EARNINGS PER SHARE

6 Months Ended

Jun. 30, 2011

EARNINGS PER SHARE

EARNINGS PER SHARE

(11) EARNINGS PER SHARE

The following is a reconciliation of basic and diluted earnings per share computations (in thousands except for per share amounts):

	Three Months Ended June 30,				Six Months Ended June 30,
	2011		2010		2011		2010
Numerator for basic and diluted earnings per share:
Income from continuing operations	$	29,156	$	55,517	$	51,886	$	65,565
Income from discontinued operations	—		2,412		—		2,794
Net income	$	29,156	$	57,929	$	51,886	$	68,359
Denominator:
Basic shares outstanding	52,939		52,581		52,869		52,542
Dilutive effect of equity-based compensation awards	423		268		392		254
Dilutive shares outstanding	53,362		52,849		53,261		52,796
Basic earnings per share:
Income from continuing operations	$	0.55	$	1.05	$	0.98	$	1.25
Income from discontinued operations, net of tax	—		0.05		—		0.05
Net income	$	0.55	$	1.10	$	0.98	$	1.30
Diluted earnings per share:
Income from continuing operations	$	0.55	$	1.05	$	0.97	$	1.24
Income from discontinued operations, net of tax	—		0.05		—		0.05
Net income	$	0.55	$	1.10	$	0.97	$	1.29

All shares and per share amounts included in the above table have been adjusted for the two-for-one stock split discussed in Note 1, “Basis of Presentation.” For the three- and six-month periods ended June 30, 2011, the dilutive effect of all then outstanding options, restricted stock and performance awards is included in the above calculations except as follows. For the three- and six-month periods ended June 30, 2011, the above calculation excluded the dilutive effects of 70 thousand outstanding performance stock awards for which the performance criteria were not attained at that time.  For the three- and six-month periods ended June 30, 2010, the above calculation excluded the dilutive effects of 294 thousand outstanding performance stock awards for which the performance criteria were not attained at that time and 36 thousand options that were not then in-the-money.

XML



SIGNIFICANT ACCOUNTING POLICIES

6 Months Ended

Jun. 30, 2011

SIGNIFICANT ACCOUNTING POLICIES

SIGNIFICANT ACCOUNTING POLICIES

(2) SIGNIFICANT ACCOUNTING POLICIES

The accompanying unaudited consolidated financial statements of the Company reflect the application of certain new or updated significant accounting policies as described below:

Property, Plant and Equipment (excluding landfill assets)

Property, plant and equipment are stated at cost and include amounts capitalized under capital lease obligations. Expenditures for major renewals and improvements which extend the life of the asset are capitalized. Items of an ordinary repair or maintenance nature are charged directly to operating expense as incurred. During the construction and development period of an asset, the costs incurred, including applicable interest costs, are classified as construction-in-progress. Interest in the amount of $0.4 million and $0.2 million was capitalized to fixed assets during the six months ended June 30, 2011, and 2010, respectively. Depreciation and amortization expense was $42.0 million and $35.9 million for the six months ended June 30, 2011, and 2010, respectively.

The Company depreciates and amortizes the cost of these assets, using the straight-line method as follows:

Asset Classification	Estimated Useful Life
Buildings and building improvements
Buildings	30—40 years
Land, leasehold and building improvements	5—40 years
Camp equipment	12—15 years
Vehicles	3—12 years
Equipment
Capitalized software and computer equipment	3 years
Solar equipment	20 years
Containers and railcars	15—20 years
All other equipment	3—10 years
Furniture and fixtures	5—8 years

Land, leasehold and building improvements have a weighted average life of 9.3 years.

Camp equipment consists of industrial lodging facilities that are utilized in the Company’s Industrial Services segment to provide lodging services to companies in the refinery and petrochemical industries.

Solar equipment consists of a solar array that is used to provide electric power for a continuously operating groundwater decontamination pump and treatment system at a closed and capped landfill located in New Jersey. The solar array was installed and became operable during the second quarter of 2011.

The Company recognizes an impairment in the carrying value of long-lived assets when the expected future undiscounted cash flows derived from the assets are less than their carrying value. For the three and six months ended June 30, 2011, and 2010, the Company has not recorded impairment charges related to long-lived assets.

Recent Accounting Pronouncements

From time to time, new accounting pronouncements are issued by the Financial Accounting Standards Board (“FASB”) and are adopted by the Company as of the specified effective dates.  Unless otherwise discussed below, management believes that the impact of recently issued accounting pronouncements will not have a material impact on the Company’s financial position, results of operations and cash flows, or do not apply to the Company’s operations.

In 2009, the FASB issued Accounting Standards Update (ASU) 2009-13, Revenue Recognition (Topic 605)—Multiple-Deliverable Revenue Arrangements, or ASU 2009-13 which provides additional guidance on the recognition of revenue from multiple element arrangements. ASU 2009-13 states that if vendor specific objective evidence or third party evidence for deliverables in an arrangement cannot be determined, companies are required to develop a best estimate of the selling price for separate deliverables and allocate arrangement consideration using the relative selling price method. This guidance is effective for fiscal years beginning after June 15, 2010 and may be applied prospectively to new or materially modified arrangements after the effective date or retrospectively. The Company adopted ASU 2009-13 prospectively as of January 1, 2011 and although the adoption did not materially impact its financial condition, results of operations, or cash flow, this guidance may impact the Company’s determination of the separation of deliverables for future arrangements.

In June 2011, the FASB issued ASU 2011-5 Comprehensive Income (Topic 220) — Presentation of Comprehensive Income. The new guidance revises the manner in which entities present comprehensive income in their financial statements. ASU 2011-5 requires entities to report components of comprehensive income in either (1) a continuous statement of comprehensive income or (2) two separate but consecutive statements. The ASU does not change the items that must be reported in other comprehensive income. This guidance will require a change in the presentation of the financial statements and will require retrospective application.  The Company will adopt this guidance as of January 2012 and has not determined which approach it will adopt.

XML



GUARANTOR AND NON-GUARANTOR SUBSIDIARIES FINANCIAL INFORMATION (Tables)

6 Months Ended

Jun. 30, 2011

GUARANTOR AND NON-GUARANTOR SUBSIDIARIES FINANCIAL INFORMATION

Schedule of condensed consolidating balance sheet

	Clean Harbors, Inc.		U.S. Guarantor Subsidiaries		Foreign Non-Guarantor Subsidiaries		Consolidating Adjustments			Total
Assets:
Cash and cash equivalents	$	196,896	$	118,563	$	62,117	$	—		$	377,576
Intercompany receivables	358,947		—		—		(358,947		)	—
Other current assets	16,322		270,797		201,677		—			488,796
Property, plant and equipment, net	—		337,544		510,732		—			848,276
Investments in subsidiaries	900,630		354,556		154,525		(1,409,711		)	—
Intercompany debt receivable	—		480,525		3,701		(484,226		)	—
Other long-term assets	14,660		86,969		148,803		—			250,432
Total assets	$	1,487,455	$	1,648,954	$	1,081,555	$	(2,252,884	)	$	1,965,080
Liabilities and Stockholders’ Equity:
Current liabilities	$	37,492	$	164,082	$	123,856	$	—		$	325,430
Intercompany payables	—		206,330		152,617		(358,947		)	—
Closure, post-closure and remedial liabilities, net	—		134,710		21,744		—			156,454
Long-term obligations	524,994		—		—		—			524,994
Capital lease obligations, net	—		744		8,365		—			9,109
Intercompany debt payable	3,701		—		480,525		(484,226		)	—
Other long-term liabilities	63,900		6,676		21,149		—			91,725
Total liabilities	630,087		512,542		808,256		(843,173		)	1,107,712
Stockholders’ equity	857,368		1,136,412		273,299		(1,409,711		)	857,368
Total liabilities and stockholders’ equity	$	1,487,455	$	1,648,954	$	1,081,555	$	(2,252,884	)	$	1,965,080

Following is the condensed consolidating balance sheet at December 31, 2010 (in thousands):

	Clean Harbors, Inc.		U.S. Guarantor Subsidiaries		Foreign Non-Guarantor Subsidiaries		Consolidating Adjustments			Total
Assets:
Cash and cash equivalents	$	100,476	$	124,582	$	77,152	$	—		$	302,210
Intercompany receivables	371,559		—		—		(371,559		)	—
Other current assets	15,521		279,895		154,911		—			450,327
Property, plant and equipment, net	—		302,028		353,366		—			655,394
Investments in subsidiaries	628,723		259,294		91,654		(979,671		)	—
Intercompany debt receivable	—		368,804		3,701		(372,505		)	—
Other long-term assets	7,768		87,888		98,888		—			194,544
Total assets	$	1,124,047	$	1,422,491	$	779,672	$	(1,723,735	)	$	1,602,475
Liabilities and Stockholders’ Equity:
Current liabilities	$	13,935	$	201,384	$	90,965	$	—		$	306,284
Intercompany payables	—		222,750		148,809		(371,559		)	—
Closure, post-closure and remedial liabilities, net	—		141,280		20,494		—			161,774
Long-term obligations	264,007		—		—		—			264,007
Capital lease obligations, net	—		249		6,590		—			6,839
Intercompany debt payable	3,701		—		368,804		(372,505		)	—
Other long-term liabilities	61,577		2,531		18,636		—			82,744
Total liabilities	343,220		568,194		654,298		(744,064		)	821,648
Stockholders’ equity	780,827		854,297		125,374		(979,671		)	780,827
Total liabilities and stockholders’ equity	$	1,124,047	$	1,422,491	$	779,672	$	(1,723,735	)	$	1,602,475

Schedule of consolidating statement of income

Following is the consolidating statement of income for the three months ended June 30, 2011 (in thousands):

	Clean Harbors, Inc.			U.S. Guarantor Subsidiaries		Foreign Non-Guarantor Subsidiaries			Consolidating Adjustments			Total
Revenues	$	—		$	263,194	$	189,238		$	(5,197	)	$	447,235
Cost of revenues (exclusive of items shown separately below)	—			178,057		134,894			(5,197		)	307,754
Selling, general and administrative expenses	8			38,621		19,625			—			58,254
Accretion of environmental liabilities	—			2,090		317			—			2,407
Depreciation and amortization	—			12,693		14,243			—			26,936
Income from operations	(8		)	31,733		20,159			—			51,884
Other income	—			394		2,474			—			2,868
Interest (expense) income	(10,630		)	5		(17		)	—			(10,642		)
Equity in earnings of subsidiaries	43,534			24,411		—			(67,945		)	—
Intercompany dividend income (expense)	—			—		3,537			(3,537		)	—
Intercompany interest income (expense)	—			8,970		(8,970		)	—			—
Income from operations before provision for income taxes	32,896			65,513		17,183			(71,482		)	44,110
Provision for income taxes	3,740			6,849		4,365			—			14,954
Net income (loss)	$	29,156		$	58,664	$	12,818		$	(71,482	)	$	29,156

Following is the consolidating statement of income for the three months ended June 30, 2010 (in thousands):

	Clean Harbors, Inc.			U.S. Guarantor Subsidiaries		Foreign Non-Guarantor Subsidiaries			Consolidating Adjustments			Total
Revenues	$	—		$	322,580	$	147,607		$	1,452		$	471,639
Cost of revenues (exclusive of items shown separately below)	—			214,558		108,270			1,452			324,280
Selling, general and administrative expenses	25			36,973		13,731			—			50,729
Accretion of environmental liabilities	—			2,320		282			—			2,602
Depreciation and amortization	—			11,478		10,627			—			22,105
Income from operations	(25		)	57,251		14,697			—			71,923
Other income	—			38		2,670			—			2,708
Interest (expense) income	(7,229		)	36		(453		)	—			(7,646		)
Equity in earnings of subsidiaries	74,197			22,155		—			(96,352		)	—
Intercompany dividend income (expense)	—			—		3,326			(3,326		)	—
Intercompany interest income (expense)	—			8,329		(8,329		)	—			—
Income from continuing operations before provision for income taxes	66,943			87,809		11,911			(99,678		)	66,985
Provision for income taxes	9,014			12,060		(9,606		)	—			11,468
Income from continuing operations	57,929			75,749		21,517			(99,678		)	55,517
Income from discontinued operations, net of tax	—			—		2,412			—			2,412
Net income	$	57,929		$	75,749	$	23,929		$	(99,678	)	$	57,929

Following is the consolidating statement of income for the six months ended June 30, 2011 (in thousands):

	Clean Harbors, Inc.			U.S. Guarantor Subsidiaries		Foreign Non-Guarantor Subsidiaries			Consolidating Adjustments			Total
Revenues	$	—		$	511,561	$	382,026		$	(11,390	)	$	882,197
Cost of revenues (exclusive of items shown separately below)	—			353,495		278,226			(11,390		)	620,331
Selling, general and administrative expenses	50			74,732		38,266			—			113,048
Accretion of environmental liabilities	—			4,177		619			—			4,796
Depreciation and amortization	—			25,691		26,705			—			52,396
Income from operations	(50		)	53,466		38,210			—			91,626
Other income	—			3,730		2,037			—			5,767
Interest (expense) income	(17,306		)	173		13			—			(17,120		)
Equity in earnings of subsidiaries	76,865			31,712		—			(108,577		)	—
Intercompany dividend income (expense)	—			—		6,993			(6,993		)	—
Intercompany interest income (expense)	—			17,700		(17,700		)	—			—
Income from operations before provision for income taxes	59,509			106,781		29,553			(115,570		)	80,273
Provision for income taxes	7,623			13,176		7,588			—			28,387
Net income	$	51,886		$	93,605	$	21,965		$	(115,570	)	$	51,886

Following is the consolidating statement of income for the six months ended June 30, 2010 (in thousands):

	Clean Harbors, Inc.			U.S. Guarantor Subsidiaries		Foreign Non-Guarantor Subsidiaries			Consolidating Adjustments			Total
Revenues	$	—		$	523,423	$	306,928		$	(3,816	)	$	826,535
Cost of revenues (exclusive of items shown separately below)	—			361,408		227,105			(3,816		)	584,697
Selling, general and administrative expenses	50			69,044		27,119			—			96,213
Accretion of environmental liabilities	—			4,740		564			—			5,304
Depreciation and amortization	—			23,527		21,252			—			44,779
Income from operations	(50		)	64,704		30,888			—			95,542
Other income	—			314		2,840			—			3,154
Interest (expense) income	(14,472		)	49		(151		)	—			(14,574		)
Equity in earnings of subsidiaries	93,215			26,816		—			(120,031		)	—
Intercompany dividend income (expense)	—			—		6,612			(6,612		)	—
Intercompany interest income (expense)	—			16,207		(16,207		)	—			—
Income from continuing operations before provision for income taxes	78,693			108,090		23,982			(126,643		)	84,122
Provision for income taxes	10,334			14,364		(6,141		)	—			18,557
Income from continuing operations	68,359			93,726		30,123			(126,643		)	65,565
Income from discontinued operations, net of tax	—			—		2,794			—			2,794
Net income	$	68,359		$	93,726	$	32,917		$	(126,643	)	$	68,359

Schedule of condensed consolidating statement of cash flows

Following is the condensed consolidating statement of cash flows for the six months ended June 30, 2011 (in thousands):

	Clean Harbors, Inc.			U.S. Guarantor Subsidiaries			Foreign Non-Guarantor Subsidiaries			Total
Net cash from operating activities	$	4,474		$	28,763		$	42,392		$	75,629
Cash flows from investing activities:
Additions to property, plant and equipment	—			(40,991		)	(24,469		)	(65,460		)
Acquisitions, net of cash acquired	—			—			(205,922		)	(205,922		)
Costs to obtain or renew permits				(298		)	(768		)	(1,066		)
Proceeds from sales of fixed assets	—			361			4,530			4,891
Proceeds from sales of marketable securities	—			—			388			388
Investment in subsidiaries	(173,540		)	115,784			57,756			—
Net cash from investing activities	(173,540		)	74,856			(168,485		)	(267,169		)
Cash flows from financing activities:
Change in uncashed checks	—			11,329			2,417			13,746
Proceeds from exercise of stock options	783			—			—			783
Proceeds from employee stock purchase plan	1,556			—			—			1,556
Remittance of shares, net	(1,807		)	—			—			(1,807		)
Excess tax benefit of stock-based compensation	1,617			—			—			1,617
Deferred financing costs paid	(8,099		)	—			—			(8,099		)
Payments on capital leases	—			(318		)	(2,998		)	(3,316		)
Distribution of cash earned on employee participation plan	—			—			(189		)	(189		)
Issuance of senior secured notes, including premium	261,250			—			—			261,250
Dividends (paid) / received	10,186			(24,306		)	14,120			—
Interest (payments) / received	—			24,132			(24,132		)	—
Intercompany debt	—			(120,475		)	120,475			—
Net cash from financing activities	265,486			(109,638		)	109,693			265,541
Effect of exchange rate change on cash	—			—			1,365			1,365
Increase in cash and cash equivalents	96,420			(6,019		)	(15,035		)	75,366
Cash and cash equivalents, beginning of period	100,476			124,582			77,152			302,210
Cash and cash equivalents, end of period	$	196,896		$	118,563		$	62,117		$	377,576

Following is the condensed consolidating statement of cash flows for the six months ended June 30, 2010 (in thousands):

	Clean Harbors, Inc.			U.S. Guarantor Subsidiaries			Foreign Non-Guarantor Subsidiaries			Total
Net cash from operating activities	$	(155	)	$	65,613		$	31,859		$	97,317
Cash flows from investing activities:
Additions to property, plant and equipment	—			(17,535		)	(17,955		)	(35,490		)
Acquisitions, net of cash acquired	—			(13,751		)	—			(13,751		)
Costs to obtain or renew permits	—			(946		)	(1,246		)	(2,192		)
Proceeds from sale of fixed assets and assets held for sale	—			930			14,664			15,594
Proceeds from sale of marketable securities	—			—			2,575			2,575
Proceeds from sale of long-term investments	—			1,300			—			1,300
Proceeds from insurance settlement	—			—			1,336			1,336
Investment in subsidiaries	(236,700		)	236,700			—			—
Net cash from investing activities	(236,700		)	206,698			(626		)	(30,628		)
Cash flows from financing activities:
Change in uncashed checks	—			(1,317		)	(2,283		)	(3,600		)
Proceeds from exercise of stock options	318			—			—			318
Proceeds from employee stock purchase plan	1,187			—			—			1,187
Remittance of shares, net	(113		)	—			—			(113		)
Excess tax benefit of stock-based compensation	782			—			—			782
Deferred financing costs paid	(53		)	—			—			(53		)
Payments of capital leases	—			(79		)	(1,673		)	(1,752		)
Distribution of cash earned on employee participation plan	—			—			(148		)	(148		)
Interest (payments) / received	—			9,136			(9,136		)	—
Intercompany debt	236,700			(236,700		)	—			—
Net cash from financing activities	238,821			(228,960		)	(13,240		)	(3,379		)
Effect of exchange rate change on cash	—			—			(1,556		)	(1,556		)
Increase in cash and cash equivalents	1,966			43,351			16,437			61,754
Cash and cash equivalents, beginning of period	141,338			50,408			41,800			233,546
Cash and cash equivalents, end of period	$	143,304		$	93,759		$	58,237		$	295,300

XML



REMEDIAL LIABILITIES

6 Months Ended

Jun. 30, 2011

REMEDIAL LIABILITIES

REMEDIAL LIABILITIES

(8) REMEDIAL LIABILITIES

The changes to remedial liabilities for the six months ended June 30, 2011 were as follows (in thousands):

	Remedial Liabilities for Landfill Sites			Remedial Liabilities for Inactive Sites			Remedial Liabilities (Including Superfund) for Non-Landfill Operations			Total
Balance at January 1, 2011	$	5,511		$	82,354		$	49,748		$	137,613
Accretion	134			1,888			1,120			3,142
Changes in estimates recorded to statement of income	(8		)	271			(665		)	(402		)
Settlement of obligations	(31		)	(1,801		)	(1,959		)	(3,791		)
Currency translation and other	96			6			508			610
Balance at June 30, 2011	$	5,702		$	82,718		$	48,752		$	137,172

XML



COMMITMENTS AND CONTINGENCIES

6 Months Ended

Jun. 30, 2011

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES

(13) COMMITMENTS AND CONTINGENCIES

Legal and Administrative Proceedings

The Company’s waste management services are regulated by federal, state, provincial and local laws enacted to regulate discharge of materials into the environment, remediation of contaminated soil and groundwater or otherwise protect the environment. This ongoing regulation results in the Company frequently becoming a party to legal or administrative proceedings involving all levels of governmental authorities and other interested parties. The issues involved in such proceedings generally relate to applications for permits and licenses by the Company and conformity with legal requirements, alleged violations of existing permits and licenses, or alleged responsibility arising under federal or state Superfund laws to remediate contamination at properties owned either by the Company or by other parties (“third party sites”) to which either the Company or prior owners of certain of the Company’s facilities shipped wastes.

At June 30, 2011 and December 31, 2010, the Company had recorded reserves of $29.6 million and $29.7 million, respectively, in the Company’s financial statements for actual or probable liabilities related to the legal and administrative proceedings in which the Company was then involved, the principal of which are described below. At June 30, 2011 and December 31, 2010, the Company also believed that it was reasonably possible that the amount of these potential liabilities could be as much as $2.7 million and $2.8 million more, respectively. The Company periodically adjusts the aggregate amount of these reserves when these actual or probable liabilities are paid or otherwise discharged, new claims arise, or additional relevant information about existing or probable claims becomes available. As of June 30, 2011, the $29.6 million of reserves consisted of (i) $27.5 million related to pending legal or administrative proceedings, including Superfund liabilities, which were included in remedial liabilities on the consolidated balance sheets and (ii) $2.1 million primarily related to federal and state enforcement actions, which were included in accrued expenses on the consolidated balance sheets.

As of June 30, 2011, the principal legal and administrative proceedings in which the Company was involved, or which had been terminated during 2011, were as follows:

Ville Mercier.  In September 2002, the Company acquired the stock of a subsidiary (the “Mercier Subsidiary”) which owns a hazardous waste incinerator in Ville Mercier, Quebec (the “Mercier Facility”). The property adjacent to the Mercier Facility, which is also owned by the Mercier Subsidiary, is now contaminated as a result of actions dating back to 1968, when the Government of Quebec issued to a company unrelated to the Mercier Subsidiary two permits to dump organic liquids into lagoons on the property. By 1972, groundwater contamination had been identified, and the Quebec government provided an alternate water supply to the municipality of Ville Mercier.

In 1999, Ville Mercier and three neighboring municipalities filed separate legal proceedings against the Mercier Subsidiary and the Government of Quebec. The lawsuits assert that the defendants are jointly and severally responsible for the contamination of groundwater in the region, which they claim caused each municipality to incur additional costs to supply drinking water for their citizens since the 1970’s and early 1980’s. The four municipalities claim a Canadian dollar (“CDN”) total of $1.6 million as damages for additional costs to obtain drinking water supplies and seek an injunctive order to obligate the defendants to remediate the groundwater in the region. The Quebec Government also sued the Mercier Subsidiary to recover approximately $17.4 million (CDN) of alleged past costs for constructing and operating a treatment system and providing alternative drinking water supplies.

On September 26, 2007, the Quebec Minister of Sustainable Development, Environment and Parks issued a Notice pursuant to Section 115.1 of the Environment Quality Act, superseding Notices issued in 1992, which are the subject of the pending litigation. The more recent Notice notifies the Mercier Subsidiary that, if the Mercier Subsidiary does not take certain remedial measures at the site, the Minister intends to undertake those measures at the site and claim direct and indirect costs related to such measures. The Mercier Subsidiary continues to assert that it has no responsibility for the groundwater contamination in the region and will contest any action by the Ministry to impose costs for remedial measures on the Mercier Subsidiary. The Company also continues to pursue settlement options. At June 30, 2011 and December 31, 2010, the Company had accrued $14.3 million and $13.5 million, respectively, for remedial liabilities relating to the Ville Mercier legal proceedings. The increase resulted primarily from a foreign exchange rate adjustment due to the strengthening of the Canadian dollar and interest accretion.

CH El Dorado.  In August 2006, the Company purchased all of the outstanding membership interests in Teris LLC (“Teris”) and changed the name of Teris to Clean Harbors El Dorado, LLC (“CH El Dorado”). At the time of the acquisition, Teris was, and CH El Dorado now is, involved in certain legal proceedings arising from a fire on January 2, 2005, at the incineration facility owned and operated by Teris in El Dorado, Arkansas.

CH El Dorado is defending vigorously the claims asserted against Teris in those proceedings, and the Company believes that the resolution of those proceedings related to the fire will not have a material adverse effect on the Company’s financial position, results of operations or cash flows. In addition to CH El Dorado’s defenses to the lawsuits, the Company will be entitled to rely upon an indemnification from the seller of the membership interests in Teris which is contained in the purchase agreement for those interests. Under that agreement, the seller agreed to indemnify (without any deductible amount) the Company against any damages which the Company might suffer as a result of the lawsuits to the extent that such damages are not fully covered by insurance or the reserves which Teris had established on its books prior to the acquisition. The seller’s parent also guaranteed the indemnification obligation of the seller to the Company.

Deer Trail, Colorado Facility.  Since April 5, 2006, the Company has been involved in various legal proceedings which have arisen as a result of the issuance by the Colorado Department of Public Health and Environment (“CDPHE”) of a radioactive materials license (“RAD License”) to a Company subsidiary, Clean Harbors Deer Trail, LLC (“CHDT”) to accept certain low level radioactive materials known as “NORM/TENORM” wastes for disposal. Adams County, the county where the CHDT facility is located, filed two suits against the CDPHE in Colorado effectively seeking to invalidate the license. The two suits filed in 2006 were both dismissed and those dismissals were upheld by the Colorado Court of Appeals. Adams County appealed those rulings to the Colorado Supreme Court which ruled on October 13, 2009 on the procedural issue that the County did have standing to challenge the license in district court and remanded the case back to that court for further proceedings. Adams County filed a third suit directly against CHDT in 2007 again attempting to invalidate the license. That suit was dismissed on November 14, 2008, and Adams County has now appealed that dismissal to the Colorado Court of Appeals. The Company continues to believe that the grounds asserted by the County are factually and legally baseless and has contested the appeal vigorously. The Company has not recorded any liability for this matter on the basis that such liability is currently neither probable nor estimable.

Superfund Proceedings

The Company has been notified that either the Company or the prior owners of certain of the Company’s facilities for which the Company may have certain indemnification obligations have been identified as potentially responsible parties (“PRPs”) or potential PRPs in connection with 62 sites which are subject to or are proposed to become subject to proceedings under federal or state Superfund laws. Of the 62 sites, two involve facilities that are now owned by the Company and 60 involve third party sites to which either the Company or the prior owners shipped wastes. In connection with each site, the Company has estimated the extent, if any, to which it may be subject, either directly or as a result of any such indemnification provisions, for cleanup and remediation costs, related legal and consulting costs associated with PRP investigations, settlements, and related legal and administrative proceedings. The amount of such actual and potential liability is inherently difficult to estimate because of, among other relevant factors, uncertainties as to the legal liability (if any) of the Company or the prior owners of certain of the Company’s facilities to contribute a portion of the cleanup costs, the assumptions that must be made in calculating the estimated cost and timing of remediation, the identification of other PRPs and their respective capability and obligation to contribute to remediation efforts, and the existence and legal standing of indemnification agreements (if any) with prior owners, which may either benefit the Company or subject the Company to potential indemnification obligations.

The Company’s potential liability for cleanup costs at the two facilities now owned by the Company and at 35 (the “Listed Third Party Sites”) of the 60 third party sites arose out of the Company’s 2002 acquisition of substantially all of the assets (the “CSD assets”) of the Chemical Services Division of Safety-Kleen Corp. As part of the purchase price for the CSD assets, the Company became liable as the owner of these two facilities and also agreed to indemnify the prior owners of the CSD assets against their share of certain cleanup costs for the Listed Third Party Sites payable to governmental entities under federal or state Superfund laws. Of the 35 Listed Third Party Sites, 12 are currently requiring expenditures on remediation, ten are now settled, and 13 are not currently requiring expenditures on remediation. The status of the two facilities owned by the Company (the Wichita Property and the BR Facility) and one of the Listed Third Party Sites (the Casmalia sites) are further described below. There are also two third party sites at which the Company has been named a PRP as a result of its acquisition of the CSD assets but disputes that it has any cleanup or related liabilities; one such site (the Marine Shale site) is described below. The Company views any liabilities associated with the Marine Shale site and the other third party site as excluded liabilities under the terms of the CSD asset acquisition, but the Company is working with the EPA on a potential settlement. In addition to the CSD related Superfund sites, there are certain of the other third party sites which are not related to the Company’s acquisition of the CSD assets, and certain notifications which the Company has received about other third party sites.

Wichita Property.  The Company acquired in 2002 as part of the CSD assets a service center located in Wichita, Kansas (the “Wichita Property”). The Wichita Property is one of several properties located within the boundaries of a 1,400 acre state-designated Superfund site in an old industrial section of Wichita known as the North Industrial Corridor Site. Along with numerous other PRPs, the former owner executed a consent decree relating to such site with the EPA, and the Company is continuing its ongoing remediation program for the Wichita Property in accordance with that consent decree. The Company also acquired rights under an indemnification agreement between the former owner and an earlier owner of the Wichita Property, which the Company anticipates but cannot guarantee will be available to reimburse certain such cleanup costs.

BR Facility.  The Company acquired in 2002 as part of the CSD assets a former hazardous waste incinerator and landfill in Baton Rouge (the “BR Facility”), for which operations had been previously discontinued by the prior owner. In September 2007, the United States Environmental Protection Agency (the “EPA”) issued a special notice letter to the Company related to the Devil’s Swamp Lake Site (“Devil’s Swamp”) in East Baton Rouge Parish, Louisiana. Devil’s Swamp includes a lake located downstream of an outfall ditch where wastewater and stormwater have been discharged, and Devil’s Swamp is proposed to be included on the National Priorities List due to the presence of Contaminants of Concern (“COC”) cited by the EPA. These COCs include substances of the kind found in wastewater and storm water discharged from the BR Facility in past operations. The EPA originally requested COC generators to submit a good faith offer to conduct a remedial investigation feasibility study directed towards the eventual remediation of the site. The Company is currently performing corrective actions at the BR Facility under an order issued by the Louisiana Department of Environmental Quality (the “LDEQ”), and has begun conducting the remedial investigation and feasibility study under an order issued by the EPA. The Company cannot presently estimate the potential additional liability for the Devil’s Swamp cleanup until a final remedy is selected by the EPA.

Casmalia Site.  At one of the 35 Listed Third Party Sites, the Casmalia Resources Hazardous Waste Management Facility (the “Casmalia site”) in Santa Barbara County, California, the Company received from the EPA a request for information in May 2007. In that request, the EPA is seeking information about the extent to which, if at all, the prior owner transported or arranged for disposal of waste at the Casmalia site. The Company has not recorded any liability for this 2007 notice on the basis that such transporter or arranger liability is currently neither probable nor estimable.

Marine Shale Site.  Prior to 1996, Marine Shale Processors, Inc. (“Marine Shale”) operated a kiln in Amelia, Louisiana which incinerated waste producing a vitrified aggregate as a by-product. Marine Shale contended that its operation recycled waste into a useful product, i.e., vitrified aggregate, and therefore was exempt from regulation under the RCRA and permitting requirements as a hazardous waste incinerator under applicable federal and state environmental laws. The EPA contended that Marine Shale was a “sham-recycler” subject to the regulation and permitting requirements as a hazardous waste incinerator under RCRA, that its vitrified aggregate by-product was a hazardous waste, and that Marine Shale’s continued operation without required permits was illegal. Litigation between the EPA and Marine Shale began in 1990 and continued until July 1996, when the U.S. Fifth Circuit Court of Appeals ordered Marine Shale to shut down its operations.

On May 11, 2007, the EPA and the LDEQ issued a special notice to the Company and other PRPs, seeking a good faith offer to address site remediation at the former Marine Shale facility. Certain of the former owners of the CSD assets were major customers of Marine Shale, but the Marine Shale site was not included as a Listed Third Party Site in connection with the Company’s acquisition of the CSD assets and the Company was never a customer of Marine Shale. Although the Company believes that it is not liable (either directly or under any indemnification obligation) for cleanup costs at the Marine Shale site, the Company elected to join with other parties which had been notified that are potentially PRPs in connection with Marine Shale site to form a group (the “Site Group”) to retain common counsel and participate in further negotiations with the EPA and the LDEQ directed towards the eventual remediation of the Marine Shale site.

The Site Group made a good faith settlement offer to the EPA on November 29, 2007, and negotiations among the EPA, the LDEQ and the Site Group with respect to the Marine Shale site are ongoing. At June 30, 2011 and December 31, 2010, the amount of the Company’s reserves relating to the Marine Shale site was $3.8 million.

Certain Other Third Party Sites.  At 14 of the 60 third party sites, the Company has an indemnification agreement with ChemWaste, a former subsidiary of Waste Management, Inc. and the prior owner. The agreement indemnifies the Company with respect to any liability at the 14 sites for waste disposed prior to the Company’s acquisition of the sites. Accordingly, Waste Management is paying all costs of defending those subsidiaries in those 14 cases, including legal fees and settlement costs. However, there can be no guarantee that the Company’s ultimate liabilities for these sites will not exceed the amount recorded or that indemnities applicable to any of these sites will be available to pay all or a portion of related costs. The Company does not have an indemnity agreement with respect to any of the other remaining 60 third party sites not discussed above. However, the Company believes that its additional potential liability, if any, to contribute to the cleanup of such remaining sites will not, in the aggregate, exceed $100,000.

Other Notifications.  Between September 2004 and May 2006, the Company also received notices from certain of the prior owners of the CSD assets seeking indemnification from the Company at five third party sites which are not included in the third party sites described above that have been designated as Superfund sites or potential Superfund sites and for which those prior owners have been identified as PRPs or potential PRPs. The Company has responded to such letters asserting that the Company has no obligation to indemnify those prior owners for any cleanup and related costs (if any) which they may incur in connection with these five sites. The Company intends to assist those prior owners by providing information that is now in the Company’s possession with respect to those five sites and, if appropriate to participate in negotiations with the government agencies and PRP groups involved. The Company has also investigated the sites to determine the existence of potential liabilities independent from the liability of those former owners, and concluded that at this time the Company is not liable for any portion of the potential cleanup of the five sites and therefore has not established a reserve.

Federal and State Enforcement Actions

From time to time, the Company pays fines or penalties in regulatory proceedings relating primarily to waste treatment, storage or disposal facilities. As of June 30, 2011 and December 31, 2010, there were two and three proceedings, respectively, for which the Company reasonably believed that the sanctions could equal or exceed $100,000. During the second quarter, the Company resolved one matter involving one of its operating subsidiaries with no impact to the Company’s financial results of operations.  The Company does not believe that the fines or other penalties in these or any of the other regulatory proceedings will, individually or in the aggregate, have a material adverse effect on its financial condition or results of operations.

Other Contingencies

In December 2010, the Company paid $10.5 million to acquire a minority interest in a privately-held company. Subsequent to the purchase of those securities but prior to December 31, 2010, the privately-held company exercised its irrevocable call right for those shares and tendered payment for a total of $10.5 million. The Company is disputing the fair value asserted by the privately-held company and believes that the shares had a fair value on the date of the exercise of the call right greater than the amount tendered. Due to the exercise of the irrevocable call right, the Company did not own those shares of that privately-held company as of December 31, 2010, and accordingly has recorded the $10.5 million in prepaid expenses and other current assets. The potential recovery of any additional amount depends upon several contested factors, and is considered a gain contingency and therefore has not been recorded in the Company’s consolidated financial statements.

XML



FINANCING ARRANGEMENTS

6 Months Ended

Jun. 30, 2011

FINANCING ARRANGEMENTS

FINANCING ARRANGEMENTS

(9) FINANCING ARRANGEMENTS

The following table is a summary of the Company’s financing arrangements (in thousands):

	June 30, 2011		December 31, 2010
Senior secured notes, at 7.625%, due August 15, 2016	$	520,000	$	270,000
Revolving credit facility, due May 31, 2016	—		—
Unamortized notes premium and discount, net	4,994		(5,993		)
Long-term obligations	$	524,994	$	264,007

On May 31, 2011, the Company increased its previous $120.0 million revolving credit facility to a $250.0 million revolving credit facility (described below).

As of December 31, 2010, the Company had outstanding $270.0 million aggregate principal amount of 7.625% senior secured notes due 2016.  On March 24, 2011, the Company issued an additional $250.0 million aggregate principal amount of such notes (the “new notes”).  Under the purchase agreement, the new notes were priced for purposes of resale at 104.5% of the aggregate principal amount, representing an effective yield to maturity of 6.132%. In addition to such 104.5% purchase price, the purchase price paid to the Company for the new notes also included interest accrued on the new notes from and including February 15, 2011. The net proceeds from the issuance and sale of the new notes, after deducting the initial purchasers’ discount and estimated other transaction expenses, were approximately $255.6 million.

The new notes and the $270.0 million of notes issued on the initial issue date are treated as a single class for all purposes including, without limitation, waivers, amendments, redemptions and other offers to purchase. The new notes and the notes issued on the initial issue date are referred to in this report collectively as the “notes” or the “senior secured notes.”

The principal terms of the notes are as follows:

Senior Secured Notes.  The notes will mature on August 15, 2016.  The notes bear interest at a rate of 7.625% per annum. Interest is payable semi-annually on February 15 and August 15 of each year. The notes were issued pursuant to an indenture dated as of August 14, 2009 (as supplemented from time to time, the “indenture”) among the Company, as issuer, the Company’s domestic subsidiaries, as guarantors, and U.S. Bank National Association, as trustee and notes collateral agent.

The fair value of the Company’s currently outstanding notes is based on quoted market prices and was $538.3 million at June 30, 2011 and $278.3 million at December 31, 2010.

The Company may redeem some or all of the notes at any time on or after August 15, 2012 at the following redemption prices (expressed as percentages of the principal amount) if redeemed during the twelve-month period commencing on August 15 of the year set forth below, plus, in each case, accrued and unpaid interest, if any, to the date of redemption:

Year	Percentage
2012	103.813	%
2013	101.906	%
2014 and thereafter	100.000	%

At any time on or after September 29, 2011 but prior to August 15, 2012, the Company may also redeem up to 10% of the original aggregate principal amount of the notes at a redemption price of 103% of the principal amount, plus any accrued and unpaid interest. Prior to August 15, 2012, the Company may also redeem up to 35% of the aggregate principal amount of the notes at a redemption price of 107.625% of the principal amount, plus any accrued and unpaid interest, using proceeds from certain equity offerings, and may also redeem some or all of the senior secured notes at a redemption price of 100% of the principal amount plus a make-whole premium and any accrued and unpaid interest. Holders may require the Company to repurchase the notes at a purchase price equal to 101% of the principal amount, plus any accrued and unpaid interest, upon a change of control of the Company.

The notes are guaranteed by substantially all the Company’s current and future domestic restricted subsidiaries. The notes are the Company’s and the guarantors’ senior secured obligations ranking equally, subject to the lien priorities summarized below, with all of the Company’s and the guarantors’ existing and future senior obligations (including obligations under the Company’s credit agreement) and senior to any future indebtedness that is expressly subordinated to the senior secured notes and the guarantees. The notes and the guarantees are secured by a first lien on substantially all of the assets of the Company and its domestic restricted subsidiaries (the “Notes Collateral”), except for accounts receivable, related general intangibles and instruments and proceeds related thereto (the “ABL Collateral”) and certain other excluded collateral as provided in the indenture and subject to certain exceptions and permitted liens. The notes and the guarantees are also secured by a second lien on the ABL Collateral that, along with a second lien on the Notes Collateral, secure the Company’s obligations under its “ABL facility” under its revolving credit agreement. The notes are not guaranteed by, or secured by the assets of, the Company’s Canadian or other foreign subsidiaries.

If the Company or its domestic subsidiaries sell assets under specified circumstances, the Company must offer to repurchase the senior secured notes from certain of the net proceeds of such sale at a purchase price equal to 100% of the principal amount, plus any accrued and unpaid interest, to the applicable repurchase date.

In connection with the issuance of the new notes, the Company and the guarantors entered into a registration rights agreement dated March 24, 2011, with the initial purchasers. Under such agreement, the Company and the guarantors were required to file with the SEC an exchange offer registration statement and use reasonable best efforts to cause the exchange offer to be consummated within 180 days following the sale of the new notes, thereby enabling holders to exchange the new notes for registered notes with terms substantially identical to the terms of the new notes. Under specified circumstances, including if the exchange offer would not be permitted by applicable law or SEC policy, the registration rights agreement would require that the Company and the guarantors file a shelf registration statement and use reasonable best efforts to have such registration statement declared effective within 90 days following the event giving rise to the requirement to file the shelf registration statement for the resale of the new notes. If the Company and the guarantors should default on their registration obligations under the registration rights agreement, additional interest (referred to as special interest), up to a maximum amount of 1.0% per annum, would become payable on the new notes until all such registration defaults are cured. The Company filed on July 15, 2011 an exchange offer registration statement, which the SEC made effective on July 27, 2011. The Company commenced the exchange offer on August 1, 2011, and the exchange offer is now scheduled to be consummated on or about August 30, 2011.

Revolving Credit Facility. On May 31, 2011, the Company entered into an amendment and restatement of the previously existing revolving credit facility with Bank of America, N.A. (“BofA”), as agent for the lenders under the facility.  The principal changes to the terms of the facility were to:

(i) increase the maximum amount of borrowings and letters of credit which the Company may obtain under the facility from $120.0 million to $150.0 million (with a $140.0 million sub-limit for letters of credit);

(ii) add one of the Company’s Canadian subsidiaries (the “Canadian Borrower”) as a party to the facility and allow the Canadian Borrower to obtain up to $100.0 million of borrowings and letters of credit (with a $75.0 million sub-limit for letters of credit), with the obligations of the Canadian Borrower under the facility secured by a first lien on the accounts receivable of the  Canadian Borrower and the Company’s other Canadian subsidiaries, and the Company and its U.S. subsidiaries guaranteeing the obligations of the Canadian Borrower but the Canadian Borrower and the Company’s other Canadian subsidiaries having no guarantee or other responsibility for the obligations of the Company or its U.S. subsidiaries under the facility;

(iii) reduce the interest rate on borrowings under the facility, in the case of LIBOR loans, from LIBOR plus an applicable margin ranging (based on the level of the Company’s fixed charge coverage ratio for the most recently completed four fiscal quarter measurement period) from 2.25% to 2.75% per annum to LIBOR plus an applicable margin ranging from 1.75% to 2.25% per annum and, in the case of base rate loans, from BofA’s base rate plus an applicable margin ranging from 1.25% to 1.75% per annum to BofA’s base rate plus an applicable margin ranging from 0.75% to 1.25% per annum; and

(iv)  extend the term of the facility so that it will expire on the first to occur of (a) May 31, 2016 or (b) 60 days prior to the maturity of the Company’s outstanding senior secured notes on August 15, 2016 if the notes have not by then been refinanced, defeased or reserved against the borrowing base on terms reasonably acceptable to the agent under the amended and restated credit agreement.

The financing arrangements and principal terms of the revolving credit facility are discussed further in the Company’s Current Report on Form 8-K filed on July 15, 2011. There have been no material changes in such terms other than those noted above during the first six months of 2011.

XML



EARNINGS PER SHARE (Tables)

6 Months Ended

Jun. 30, 2011

EARNINGS PER SHARE

Reconciliation of basic and diluted earnings per share computations

	Three Months Ended June 30,				Six Months Ended June 30,
	2011		2010		2011		2010
Numerator for basic and diluted earnings per share:
Income from continuing operations	$	29,156	$	55,517	$	51,886	$	65,565
Income from discontinued operations	—		2,412		—		2,794
Net income	$	29,156	$	57,929	$	51,886	$	68,359
Denominator:
Basic shares outstanding	52,939		52,581		52,869		52,542
Dilutive effect of equity-based compensation awards	423		268		392		254
Dilutive shares outstanding	53,362		52,849		53,261		52,796
Basic earnings per share:
Income from continuing operations	$	0.55	$	1.05	$	0.98	$	1.25
Income from discontinued operations, net of tax	—		0.05		—		0.05
Net income	$	0.55	$	1.10	$	0.98	$	1.30
Diluted earnings per share:
Income from continuing operations	$	0.55	$	1.05	$	0.97	$	1.24
Income from discontinued operations, net of tax	—		0.05		—		0.05
Net income	$	0.55	$	1.10	$	0.97	$	1.29

XML



CLOSURE AND POST-CLOSURE LIABILITIES

6 Months Ended

Jun. 30, 2011

CLOSURE AND POST-CLOSURE LIABILITIES

CLOSURE AND POST-CLOSURE LIABILITIES

(7) CLOSURE AND POST-CLOSURE LIABILITIES

The changes to closure and post-closure liabilities (also referred to as “asset retirement obligations”) for the six months ended June 30, 2011 were as follows (in thousands):

	Landfill Retirement Liability			Non-Landfill Retirement Liability			Total
Balance at January 1, 2011	$	29,756		$	8,923		$	38,679
New asset retirement obligations	1,169			—			1,169
Accretion	1,100			554			1,654
Changes in estimates recorded to statement of income	(400		)	29			(371		)
Other changes in estimates recorded to balance sheet	(4,681		)	121			(4,560		)
Settlement of obligations	(1,467		)	(306		)	(1,773		)
Currency translation and other	91			19			110
Balance at June 30, 2011	$	25,568		$	9,340		$	34,908

All of the landfill facilities included in the above were active as of June 30, 2011.

New asset retirement obligations incurred in 2011 are being discounted at the credit-adjusted risk-free rate of 8.79% and inflated at a rate of 1.01%.

XML



GUARANTOR AND NON-GUARANTOR SUBSIDIARIES FINANCIAL INFORMATION (Details 2) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010	Jun. 30, 2010	Dec. 31, 2009
ASSETS
Cash and cash equivalents	$ 377,576	$ 302,210	$ 295,300	$ 233,546
Other current assets	488,796	450,327
Property, plant and equipment, net	848,276	655,394
Other long-term assets	250,432	194,544
Total assets	1,965,080	1,602,475
LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities	325,430	306,284
Closure, post-closure and remedial liabilities, net	156,454	161,774
Long-term obligations	524,994	264,007
Capital lease obligations, net	9,109	6,839
Other long-term liabilities	91,725	82,744
Total liabilities	1,107,712	821,648
Stockholders' equity	857,368	780,827
Total liabilities and stockholders' equity	1,965,080	1,602,475
Clean Harbors, Inc.
ASSETS
Cash and cash equivalents	196,896	100,476	143,304	141,338
Intercompany receivables	358,947	371,559
Other current assets	16,322	15,521
Investments in subsidiaries	900,630	628,723
Other long-term assets	14,660	7,768
Total assets	1,487,455	1,124,047
LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities	37,492	13,935
Long-term obligations	524,994	264,007
Intercompany debt payable	3,701	3,701
Other long-term liabilities	63,900	61,577
Total liabilities	630,087	343,220
Stockholders' equity	857,368	780,827
Total liabilities and stockholders' equity	1,487,455	1,124,047
U.S. Guarantor Subsidiaries
ASSETS
Cash and cash equivalents	118,563	124,582	93,759	50,408
Other current assets	270,797	279,895
Property, plant and equipment, net	337,544	302,028
Investments in subsidiaries	354,556	259,294
Intercompany debt receivable	480,525	368,804
Other long-term assets	86,969	87,888
Total assets	1,648,954	1,422,491
LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities	164,082	201,384
Intercompany payables	206,330	222,750
Closure, post-closure and remedial liabilities, net	134,710	141,280
Capital lease obligations, net	744	249
Other long-term liabilities	6,676	2,531
Total liabilities	512,542	568,194
Stockholders' equity	1,136,412	854,297
Total liabilities and stockholders' equity	1,648,954	1,422,491
Foreign Non-Guarantor Subsidiaries
ASSETS
Cash and cash equivalents	62,117	77,152	58,237	41,800
Other current assets	201,677	154,911
Property, plant and equipment, net	510,732	353,366
Investments in subsidiaries	154,525	91,654
Intercompany debt receivable	3,701	3,701
Other long-term assets	148,803	98,888
Total assets	1,081,555	779,672
LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities	123,856	90,965
Intercompany payables	152,617	148,809
Closure, post-closure and remedial liabilities, net	21,744	20,494
Capital lease obligations, net	8,365	6,590
Intercompany debt payable	480,525	368,804
Other long-term liabilities	21,149	18,636
Total liabilities	808,256	654,298
Stockholders' equity	273,299	125,374
Total liabilities and stockholders' equity	1,081,555	779,672
Consolidating Adjustments
ASSETS
Intercompany receivables	(358,947)	(371,559)
Investments in subsidiaries	(1,409,711)	(979,671)
Intercompany debt receivable	(484,226)	(372,505)
Total assets	(2,252,884)	(1,723,735)
LIABILITIES AND STOCKHOLDERS' EQUITY
Intercompany payables	(358,947)	(371,559)
Intercompany debt payable	(484,226)	(372,505)
Total liabilities	(843,173)	(744,064)
Stockholders' equity	(1,409,711)	(979,671)
Total liabilities and stockholders' equity	$ (2,252,884)	$ (1,723,735)

XML



CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands	Total	Common Stock	Treasury Stock	Shares Held Under Employee Participation Plan	Additional Paid-in Capital	Comprehensive Income	Accumulated Other Comprehensive Income	Accumulated Earnings
Balance at Dec. 31, 2010	$ 780,827	$ 528	$ (2,467)	$ (777)	$ 488,384		$ 50,759	$ 244,400
Balance (in shares) at Dec. 31, 2010		52,772
Increase (Decrease) in Stockholders' Equity
Net income	51,886					51,886		51,886
Change in fair value of available for sale securities, net of taxes	(791)					(791)	(791)
Foreign currency translation	20,398					20,398	20,398
Total comprehensive income						71,493
Stock-based compensation	2,899				2,899
Stock-based compensation (in shares)		168
Issuance of restricted shares, net of shares remitted	(1,807)		(1,807)
Issuance of restricted shares, net of shares remitted (in shares)		(42)
Exercise of stock options	783	2			781
Exercise of stock options (in shares)		40
Net tax benefit on exercise of stock options	1,617				1,617
Employee stock purchase plan	1,556				1,556
Employee stock purchase plan (in shares)		48
Balance at Jun. 30, 2011	$ 857,368	$ 530	$ (4,274)	$ (777)	$ 495,237		$ 70,366	$ 296,286
Balance (in shares) at Jun. 30, 2011		52,986

XML



BUSINESS COMBINATIONS

6 Months Ended

Jun. 30, 2011

BUSINESS COMBINATIONS

BUSINESS COMBINATIONS

(3) BUSINESS COMBINATIONS

Peak

On June 10, 2011, the Company acquired 100% of the outstanding common shares of Peak Energy Services Ltd. (“Peak”) (other than the 3.15% of Peak’s outstanding common shares which the Company already owned) in exchange for approximately CDN $158.7 million in cash (CDN $0.95 for each Peak share) and the assumption and payment of Peak net debt of approximately CDN $37.5 million. The total acquisition price, which includes the previous investment in Peak shares referred to above, was approximately CDN $200.2 million, or U.S. $205.1 million based on an exchange rate of 0.976057 CDN $ to one U.S. $ on June 10, 2011.

Peak is a diversified energy services corporation headquartered in Calgary, Alberta, operating in western Canada and the U.S. Through its various operating divisions, Peak provides drilling and production equipment and services to its customers in the conventional and unconventional oil and natural gas industries as well as the oil sands region of western Canada. Peak also provides water technology solutions to a variety of customers throughout North America. Peak employs approximately 900 people. Peak shares previously traded on the Toronto Stock Exchange under the symbol “PES.” The Company anticipates that this acquisition will expand its presence in the energy services marketplace, particularly in the area of oil and natural gas drilling and production support. The Peak business has been integrated within the Oil and Gas Field Services and Industrial Services segments of the Company’s operations and reporting structure.

The following table summarizes the preliminary purchase price for Peak at the acquisition date (in thousands of U.S. dollars).

Cash paid for Peak common shares	$	162,585
Fair value of previously owned common shares (1)	4,117
Peak net debt assumed (2)	38,431
Total estimated purchase price	$	205,133

(1) The Company previously owned a 3.15% interest in Peak which was recorded in marketable securities. On June 10, 2011, the Company acquired the remaining outstanding shares of Peak and as a result, the Company remeasured the fair value of its previously held common shares and recognized the resulting gain of $1.9 million in other income. The unrealized gain on the Peak investment was previously recorded in accumulated other comprehensive income. For this purpose, the fair value of the Company’s previous investment in Peak was deemed to be $4.1 million, calculated based on the closing price of Peak’s shares on the Toronto Stock Exchange on the date before the acquisition was publicly announced.

(2)   The outstanding Peak debt, net of $15.7 million of cash assumed, which consisted of three term loan facilities, was paid off on June 10, 2011.

Acquisition related costs of $0.6 million and $0.7 million were included in selling, general and administrative expenses in the Company’s consolidated statements of income for the three and six months ended June 30, 2011, respectively.

The following table summarizes the recognized amounts of identifiable assets acquired and liabilities assumed (in thousands). The fair value of all the acquired identifiable assets and liabilities summarized below is provisional pending finalization of the Company’s acquisition accounting.  Final determination of the fair value may result in further adjustments to the values presented below.

	Asset (Liability)
Current assets (i)	$	45,797
Property, plant and equipment	149,344
Identifiable intangible assets	14,107
Other assets	8,800
Current liabilities	(27,717		)
Other liabilities	(8,344		)
Total identifiable net assets	$	181,987
Goodwill (ii)	23,146
Total	$	205,133

(i) The preliminary fair value of the financial assets acquired includes customer receivables with a preliminary fair value of $33.4 million. The gross amount due was $35.3 million.

(ii) Goodwill, which is attributable to expected operating and cross-selling synergies, is not expected to be deductible for tax purposes. Goodwill of $9.3 million and $13.8 million has been recorded in the Oil and Gas Field Services and Industrial Services segments, respectively; however, the amount and the allocation are subject to change pending the finalization of the Company’s valuation.

The Company has determined that the separate disclosure of Peak’s earnings is impracticable for the three and six months ended June 30, 2011 due to the integration of Peak operations into the Company upon acquisition. Revenues attributable to Peak included in the Company’s consolidated statements of income for the three and six months ended June 30, 2011 were $9.6 million.

The following unaudited pro forma combined summary data presents information as if Peak had been acquired at the beginning of 2010 and assumes that there was nothing that is considered a material, non-recurring pro forma adjustment directly attributable to the acquisition. The pro forma information does not necessarily reflect the actual results that would have occurred had the Company and Peak been combined during the periods presented, nor is it necessarily indicative of the future results of operations of the combined companies (in thousands).

	Three months ended June 30,		Six months ended June 30,
	2010		2010
Pro forma combined revenues	$	494,359	$	881,916
Pro forma combined net income	$	56,488	$	69,148

Status of Proposed Acquisition of Badger

The Company entered on January 25, 2011 into a definitive agreement to acquire Badger Daylighting Ltd. (“Badger”), an Alberta corporation headquartered in Calgary, Alberta. Under the terms of the acquisition agreement, a condition to the respective obligations of each of the Company and Badger to complete the transaction was approval of the transaction by a required affirmative vote of at least 66 2/3 % of Badger’s shareholders and option holders voting on the matter. At a meeting held on April 26, 2011, the Badger shareholders and option holders failed to approve the transaction by the required vote. In accordance with the terms of the acquisition agreement, the Company terminated the agreement on April 26, 2011. The acquisition agreement provided that if the Company terminated the agreement because of a failure by the Badger shareholders and option holders to approve the transaction by the required vote, Badger was obligated to reimburse the Company’s out of pocket expenses incurred in connection with the proposed transaction including the financing thereof, up to a maximum of CDN $1.5 million. Based on a demand letter sent to Badger in May 2011, the Company received U.S. $1.1 million from Badger in June for reimbursement in accordance with this provision of the agreement.

XML



GOODWILL AND OTHER INTANGIBLE ASSETS (Details) (USD $)	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2011	Jun. 30, 2011	Dec. 31, 2010
Changes to goodwill
Balance at the beginning of the period		$ 60,252,000
Acquired from acquisitions		27,062,000
Foreign currency translation		1,197,000
Balance at the end of the period	88,511,000	88,511,000	60,252,000
Finite-lived intangible assets
Cost	194,103,000	194,103,000	175,033,000
Accumulated Amortization	67,035,000	67,035,000	60,633,000
Net	127,068,000	127,068,000	114,400,000
Weighted Average Amortization Period (in years)		9.4	9.7
Aggregate amortization expense	2,900,000	5,800,000
Permits
Finite-lived intangible assets
Cost	105,748,000	105,748,000	103,493,000
Accumulated Amortization	44,464,000	44,464,000	42,430,000
Net	61,284,000	61,284,000	61,063,000
Weighted Average Amortization Period (in years)		17.7	15.9
Customer relationships
Finite-lived intangible assets
Cost	69,781,000	69,781,000	58,322,000
Accumulated Amortization	14,008,000	14,008,000	10,418,000
Net	55,773,000	55,773,000	47,904,000
Weighted Average Amortization Period (in years)		7.0	8.0
Other intangible assets
Finite-lived intangible assets
Cost	18,574,000	18,574,000	13,218,000
Accumulated Amortization	8,563,000	8,563,000	7,785,000
Net	$ 10,011,000	$ 10,011,000	$ 5,433,000
Weighted Average Amortization Period (in years)		4.1	3.5

XML



FINANCING ARRANGEMENTS (Tables)

6 Months Ended

Jun. 30, 2011

FINANCING ARRANGEMENTS

Summary of the entity's financial arrangements

	June 30, 2011		December 31, 2010
Senior secured notes, at 7.625%, due August 15, 2016	$	520,000	$	270,000
Revolving credit facility, due May 31, 2016	—		—
Unamortized notes premium and discount, net	4,994		(5,993		)
Long-term obligations	$	524,994	$	264,007

Schedule of redemption prices expressed as percentages of the principal amount

Year	Percentage
2012	103.813	%
2013	101.906	%
2014 and thereafter	100.000	%

XML



GUARANTOR AND NON-GUARANTOR SUBSIDIARIES FINANCIAL INFORMATION (Details) (USD $)	1 Months Ended			1 Months Ended
	Mar. 31, 2011 Senior secured notes	Jun. 30, 2011 Senior secured notes	Dec. 31, 2010 Senior secured notes	Mar. 31, 2011 Senior secured notes Clean Harbors, Inc.	Jun. 30, 2011 Senior secured notes Clean Harbors, Inc.	Dec. 31, 2010 Senior secured notes Clean Harbors, Inc.	Aug. 14, 2009 Clean Harbors, Inc.
Financing arrangements
Senior secured notes, at 7.625%, due on August 15, 2016		$ 520,000,000	$ 270,000,000		$ 520,000,000	$ 270,000,000	$ 300,000,000
Senior secured notes, interest rate (as a percent)		7.625%	7.625%			7.625%
Senior secured notes issued, aggregate principal amount	$ 250,000,000			$ 250,000,000

XML



FAIR VALUE MEASUREMENTS

6 Months Ended

Jun. 30, 2011

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS

(4) FAIR VALUE MEASUREMENTS

The Company’s financial instruments consist of cash and cash equivalents, marketable securities, receivables, trade payables, auction rate securities and long-term debt. The estimated fair value of cash and cash equivalents, receivables, and trade payables approximate their carrying value due to the short maturity of these instruments. As of June 30, 2011, the Company held certain marketable securities and auction rate securities that are required to be measured at fair value on a recurring basis. The fair value of marketable securities is recorded based on quoted market prices. The auction rate securities are classified as available for sale and the fair value of these securities as of June 30, 2011 was estimated utilizing a discounted cash flow analysis. The discounted cash flow analysis considered, among other items, the collateralization underlying the security investments, the creditworthiness of the counterparty, the timing of expected future cash flows, and the expectation of the next time these securities are expected to have a successful auction. The auction rate securities were also compared, when possible, to other observable market data with similar characteristics to the securities held by the Company.

As of June 30, 2011, all of the Company’s auction rate securities continue to have AAA underlying ratings. The underlying assets of the Company’s auction rate securities are student loans, which are substantially insured by the Federal Family Education Loan Program. The Company attributes the $0.4 million decline in the fair value of the securities from the original cost basis to external liquidity issues rather than credit issues. The Company assessed the decline in value to be temporary because it does not intend to sell and it is more likely than not that the Company will not have to sell the securities before their maturity.

During the six months ended June 30, 2011 and 2010, the Company recorded an unrealized pre-tax loss of $0.1 million and a pre-tax gain of $0.1 million, respectively, on its auction rate securities, which was included in accumulated other comprehensive income. As of June 30, 2011, the Company continued to earn interest on its auction rate securities according to their stated terms with interest rates resetting generally every 28 days.

The Company’s assets measured at fair value on a recurring basis subject to the disclosure requirements at June 30, 2011 and December 31, 2010 were as follows (in thousands):

	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Balance at June 30, 2011
Auction rate securities	$	—	$	—	$	5,311	$	5,311
Marketable securities	$	128	$	—	$	—	$	128

	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Balance at December 31, 2010
Auction rate securities	$	—	$	—	$	5,437	$	5,437
Marketable securities	$	3,174	$	—	$	—	$	3,174

The decrease in marketable securities since December 31, 2010 was primarily due to the Peak acquisition on June 10, 2011. The Company previously owned a 3.15% interest in Peak which was recorded in marketable securities.

The following tables present the changes in the Company’s auction rate securities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) during the three and six months ended June 30, 2011 and 2010 (in thousands):

	Three Months Ended June 30,
	2011			2010
Balance at April 1,	$	5,379		$	6,503
Sale of auction rate securities	—			(1,300		)
Unrealized (losses) gains included in other comprehensive income	(68		)	112
Balance at June 30,	$	5,311		$	5,315

	Six Months Ended June 30,
	2011			2010
Balance at January 1,	$	5,437		$	6,503
Sale of auction rate securities	—			(1,300		)
Unrealized (losses) gains included in other comprehensive income	(126		)	112
Balance at June 30,	$	5,311		$	5,315

XML



ACCRUED EXPENSES (Details) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
ACCRUED EXPENSES
Insurance	$ 20,852	$ 19,736
Interest	15,149	7,826
Accrued disposal costs	2,123	2,173
Accrued compensation and benefits	39,115	44,545
Income, real estate, sales and other taxes	16,776	19,529
Other	24,701	22,280
Total accrued expenses	$ 118,716	$ 116,089

XML



ACCRUED EXPENSES (Tables)

6 Months Ended

Jun. 30, 2011

ACCRUED EXPENSES

Accrued expenses

	June 30, 2011		December 31, 2010
Insurance	$	20,852	$	19,736
Interest	15,149		7,826
Accrued disposal costs	2,123		2,173
Accrued compensation and benefits	39,115		44,545
Income, real estate, sales and other taxes	16,776		19,529
Other	24,701		22,280
	$	118,716	$	116,089

XML



STOCK-BASED COMPENSATION (Tables)

6 Months Ended

Jun. 30, 2011

STOCK-BASED COMPENSATION

Summary of the total number, weighted average grant-date fair value, and types of awards granted

	Three and Six Months Ended June 30, 2011
	Shares	Weighted- Average Grant-Date Fair Value
Restricted stock awards	154,214	$	48.43
Performance stock awards	69,948	$	48.13
Total awards	224,162

XML



GOODWILL AND OTHER INTANGIBLE ASSETS (Details 2) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2011
Acquired finite-lived intangible assets
Total Amount Assigned	$ 14,278
Weighted Average Amortization Period (in years)	5.0
Expected amortization
2011 (six months)	8,607
2012	14,076
2013	13,246
2014	12,597
2015	12,047
Thereafter	66,495
Total	127,068
Customer relationships
Acquired finite-lived intangible assets
Total Amount Assigned	10,020
Weighted Average Amortization Period (in years)	5.3
Other intangible assets
Acquired finite-lived intangible assets
Total Amount Assigned	$ 4,258
Weighted Average Amortization Period (in years)	6.0

XML



REMEDIAL LIABILITIES (Tables)

6 Months Ended

Jun. 30, 2011

REMEDIAL LIABILITIES

Changes to remedial liabilities

	Remedial Liabilities for Landfill Sites			Remedial Liabilities for Inactive Sites			Remedial Liabilities (Including Superfund) for Non-Landfill Operations			Total
Balance at January 1, 2011	$	5,511		$	82,354		$	49,748		$	137,613
Accretion	134			1,888			1,120			3,142
Changes in estimates recorded to statement of income	(8		)	271			(665		)	(402		)
Settlement of obligations	(31		)	(1,801		)	(1,959		)	(3,791		)
Currency translation and other	96			6			508			610
Balance at June 30, 2011	$	5,702		$	82,718		$	48,752		$	137,172

XML



STOCK-BASED COMPENSATION

6 Months Ended

Jun. 30, 2011

STOCK-BASED COMPENSATION

STOCK-BASED COMPENSATION

(12) STOCK-BASED COMPENSATION

The following table summarizes the total number and type of awards granted during the three- and six-month periods ended June 30, 2011, as well as the related weighted-average grant-date fair values:

	Three and Six Months Ended June 30, 2011
	Shares	Weighted- Average Grant-Date Fair Value
Restricted stock awards	154,214	$	48.43
Performance stock awards	69,948	$	48.13
Total awards	224,162

All shares and weighted-average grant date fair values included in the above table have been adjusted for the two-for-one stock split discussed in Note 1, “Basis of Presentation.” Certain performance stock awards granted in June 2011 are subject to both achieving predetermined revenue and EBITDA targets for a specified period of time and service conditions.  As of June 30, 2011, based on year-to-date results of operations, management did not believe that it was probable that the performance targets, which must be attained by December 31, 2012, would be achieved and as a result, no expense was recorded during the three and six months ended June 30, 2011 related to the 2011 performance stock awards.

XML



Document and Entity Information	6 Months Ended
	Jun. 30, 2011	Aug. 03, 2011
Document and Entity Information
Entity Registrant Name	CLEAN HARBORS INC
Entity Central Index Key	0000822818
Document Type	10-Q
Document Period End Date	Jun. 30, 2011
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		53,013,677
Document Fiscal Year Focus	2011
Document Fiscal Period Focus	Q2

XML



GOODWILL AND OTHER INTANGIBLE ASSETS

6 Months Ended

Jun. 30, 2011

GOODWILL AND OTHER INTANGIBLE ASSETS

GOODWILL AND OTHER INTANGIBLE ASSETS

(5) GOODWILL AND OTHER INTANGIBLE ASSETS

The changes to goodwill for the six months ended June 30, 2011 were as follows (in thousands):

	2011
Balance at January 1, 2011	$	60,252
Acquired from acquisitions	27,062
Foreign currency translation	1,197
Balance at June 30, 2011	$	88,511

The increase in goodwill during the six months ended June 30, 2011 was primarily attributed to the acquisition of Peak.  The goodwill related to Peak includes estimates that are subject to change based upon final fair value determinations. Below is a summary of amortizable other intangible assets (in thousands):

	June 30, 2011							December 31, 2010
	Cost		Accumulated Amortization		Net		Weighted Average Amortization Period (in years)	Cost		Accumulated Amortization		Net		Weighted Average Amortization Period (in years)
Permits	$	105,748	$	44,464	$	61,284	17.7	$	103,493	$	42,430	$	61,063	15.9
Customer relationships	69,781		14,008		55,773		7.0	58,322		10,418		47,904		8.0
Other intangible assets	18,574		8,563		10,011		4.1	13,218		7,785		5,433		3.5
	$	194,103	$	67,035	$	127,068	9.4	$	175,033	$	60,633	$	114,400	9.7

The aggregate amortization expense for the three and six months ended June 30, 2011 was $2.9 million and $5.8 million, respectively.

The increase in customer relationships and other intangible assets was primarily attributed to the acquisition of Peak. Amounts are provisional and subject to change upon completion of final valuations. The total amounts assigned and the weighted average amortization period by major intangible asset classes as it relates to the Peak acquisition are as follows:

	Total Amount Assigned		Weighted Average Amortization Period (in years)
Customer relationships	$	10,020	5.3
Other intangibles	4,258		6.0
	$	14,278	5.0

Below is the expected future amortization for the net carrying amount of finite lived intangible assets at June 30, 2011 (in thousands):

Years Ending December 31,	Expected Amortization
2011 (six months)	$	8,607
2012	14,076
2013	13,246
2014	12,597
2015	12,047
Thereafter	66,495
	$	127,068

XML



GUARANTOR AND NON-GUARANTOR SUBSIDIARIES FINANCIAL INFORMATION

6 Months Ended

Jun. 30, 2011

GUARANTOR AND NON-GUARANTOR SUBSIDIARIES FINANCIAL INFORMATION

GUARANTOR AND NON-GUARANTOR SUBSIDIARIES FINANCIAL INFORMATION

(15) GUARANTOR AND NON-GUARANTOR SUBSIDIARIES FINANCIAL INFORMATION

As of December 31, 2010, the Company had outstanding $270.0 million aggregate principal amount of 7.625% senior secured notes due 2016 issued by the parent company, Clean Harbors, Inc., and on March 24, 2011, the parent company issued an additional $250.0 million aggregate principal amount of such notes.  The combined $520.0 million of the parent’s senior secured notes outstanding at June 30, 2011 is guaranteed by substantially all of the parent’s subsidiaries organized in the United States. Each guarantor is a wholly-owned subsidiary of the Company and its guarantee is both full and unconditional and joint and several.  The parent’s notes are not guaranteed by the Company’s Canadian or other foreign subsidiaries. The following presents supplemental condensed consolidating financial information for the parent company, the guarantor subsidiaries and the non-guarantor subsidiaries, respectively.

Following is the condensed consolidating balance sheet at June 30, 2011 (in thousands):

	Clean Harbors, Inc.		U.S. Guarantor Subsidiaries		Foreign Non-Guarantor Subsidiaries		Consolidating Adjustments			Total
Assets:
Cash and cash equivalents	$	196,896	$	118,563	$	62,117	$	—		$	377,576
Intercompany receivables	358,947		—		—		(358,947		)	—
Other current assets	16,322		270,797		201,677		—			488,796
Property, plant and equipment, net	—		337,544		510,732		—			848,276
Investments in subsidiaries	900,630		354,556		154,525		(1,409,711		)	—
Intercompany debt receivable	—		480,525		3,701		(484,226		)	—
Other long-term assets	14,660		86,969		148,803		—			250,432
Total assets	$	1,487,455	$	1,648,954	$	1,081,555	$	(2,252,884	)	$	1,965,080
Liabilities and Stockholders’ Equity:
Current liabilities	$	37,492	$	164,082	$	123,856	$	—		$	325,430
Intercompany payables	—		206,330		152,617		(358,947		)	—
Closure, post-closure and remedial liabilities, net	—		134,710		21,744		—			156,454
Long-term obligations	524,994		—		—		—			524,994
Capital lease obligations, net	—		744		8,365		—			9,109
Intercompany debt payable	3,701		—		480,525		(484,226		)	—
Other long-term liabilities	63,900		6,676		21,149		—			91,725
Total liabilities	630,087		512,542		808,256		(843,173		)	1,107,712
Stockholders’ equity	857,368		1,136,412		273,299		(1,409,711		)	857,368
Total liabilities and stockholders’ equity	$	1,487,455	$	1,648,954	$	1,081,555	$	(2,252,884	)	$	1,965,080

Following is the condensed consolidating balance sheet at December 31, 2010 (in thousands):

	Clean Harbors, Inc.		U.S. Guarantor Subsidiaries		Foreign Non-Guarantor Subsidiaries		Consolidating Adjustments			Total
Assets:
Cash and cash equivalents	$	100,476	$	124,582	$	77,152	$	—		$	302,210
Intercompany receivables	371,559		—		—		(371,559		)	—
Other current assets	15,521		279,895		154,911		—			450,327
Property, plant and equipment, net	—		302,028		353,366		—			655,394
Investments in subsidiaries	628,723		259,294		91,654		(979,671		)	—
Intercompany debt receivable	—		368,804		3,701		(372,505		)	—
Other long-term assets	7,768		87,888		98,888		—			194,544
Total assets	$	1,124,047	$	1,422,491	$	779,672	$	(1,723,735	)	$	1,602,475
Liabilities and Stockholders’ Equity:
Current liabilities	$	13,935	$	201,384	$	90,965	$	—		$	306,284
Intercompany payables	—		222,750		148,809		(371,559		)	—
Closure, post-closure and remedial liabilities, net	—		141,280		20,494		—			161,774
Long-term obligations	264,007		—		—		—			264,007
Capital lease obligations, net	—		249		6,590		—			6,839
Intercompany debt payable	3,701		—		368,804		(372,505		)	—
Other long-term liabilities	61,577		2,531		18,636		—			82,744
Total liabilities	343,220		568,194		654,298		(744,064		)	821,648
Stockholders’ equity	780,827		854,297		125,374		(979,671		)	780,827
Total liabilities and stockholders’ equity	$	1,124,047	$	1,422,491	$	779,672	$	(1,723,735	)	$	1,602,475

Following is the consolidating statement of income for the three months ended June 30, 2011 (in thousands):

	Clean Harbors, Inc.			U.S. Guarantor Subsidiaries		Foreign Non-Guarantor Subsidiaries			Consolidating Adjustments			Total
Revenues	$	—		$	263,194	$	189,238		$	(5,197	)	$	447,235
Cost of revenues (exclusive of items shown separately below)	—			178,057		134,894			(5,197		)	307,754
Selling, general and administrative expenses	8			38,621		19,625			—			58,254
Accretion of environmental liabilities	—			2,090		317			—			2,407
Depreciation and amortization	—			12,693		14,243			—			26,936
Income from operations	(8		)	31,733		20,159			—			51,884
Other income	—			394		2,474			—			2,868
Interest (expense) income	(10,630		)	5		(17		)	—			(10,642		)
Equity in earnings of subsidiaries	43,534			24,411		—			(67,945		)	—
Intercompany dividend income (expense)	—			—		3,537			(3,537		)	—
Intercompany interest income (expense)	—			8,970		(8,970		)	—			—
Income from operations before provision for income taxes	32,896			65,513		17,183			(71,482		)	44,110
Provision for income taxes	3,740			6,849		4,365			—			14,954
Net income (loss)	$	29,156		$	58,664	$	12,818		$	(71,482	)	$	29,156

Following is the consolidating statement of income for the three months ended June 30, 2010 (in thousands):

	Clean Harbors, Inc.			U.S. Guarantor Subsidiaries		Foreign Non-Guarantor Subsidiaries			Consolidating Adjustments			Total
Revenues	$	—		$	322,580	$	147,607		$	1,452		$	471,639
Cost of revenues (exclusive of items shown separately below)	—			214,558		108,270			1,452			324,280
Selling, general and administrative expenses	25			36,973		13,731			—			50,729
Accretion of environmental liabilities	—			2,320		282			—			2,602
Depreciation and amortization	—			11,478		10,627			—			22,105
Income from operations	(25		)	57,251		14,697			—			71,923
Other income	—			38		2,670			—			2,708
Interest (expense) income	(7,229		)	36		(453		)	—			(7,646		)
Equity in earnings of subsidiaries	74,197			22,155		—			(96,352		)	—
Intercompany dividend income (expense)	—			—		3,326			(3,326		)	—
Intercompany interest income (expense)	—			8,329		(8,329		)	—			—
Income from continuing operations before provision for income taxes	66,943			87,809		11,911			(99,678		)	66,985
Provision for income taxes	9,014			12,060		(9,606		)	—			11,468
Income from continuing operations	57,929			75,749		21,517			(99,678		)	55,517
Income from discontinued operations, net of tax	—			—		2,412			—			2,412
Net income	$	57,929		$	75,749	$	23,929		$	(99,678	)	$	57,929

Following is the consolidating statement of income for the six months ended June 30, 2011 (in thousands):

	Clean Harbors, Inc.			U.S. Guarantor Subsidiaries		Foreign Non-Guarantor Subsidiaries			Consolidating Adjustments			Total
Revenues	$	—		$	511,561	$	382,026		$	(11,390	)	$	882,197
Cost of revenues (exclusive of items shown separately below)	—			353,495		278,226			(11,390		)	620,331
Selling, general and administrative expenses	50			74,732		38,266			—			113,048
Accretion of environmental liabilities	—			4,177		619			—			4,796
Depreciation and amortization	—			25,691		26,705			—			52,396
Income from operations	(50		)	53,466		38,210			—			91,626
Other income	—			3,730		2,037			—			5,767
Interest (expense) income	(17,306		)	173		13			—			(17,120		)
Equity in earnings of subsidiaries	76,865			31,712		—			(108,577		)	—
Intercompany dividend income (expense)	—			—		6,993			(6,993		)	—
Intercompany interest income (expense)	—			17,700		(17,700		)	—			—
Income from operations before provision for income taxes	59,509			106,781		29,553			(115,570		)	80,273
Provision for income taxes	7,623			13,176		7,588			—			28,387
Net income	$	51,886		$	93,605	$	21,965		$	(115,570	)	$	51,886

Following is the consolidating statement of income for the six months ended June 30, 2010 (in thousands):

	Clean Harbors, Inc.			U.S. Guarantor Subsidiaries		Foreign Non-Guarantor Subsidiaries			Consolidating Adjustments			Total
Revenues	$	—		$	523,423	$	306,928		$	(3,816	)	$	826,535
Cost of revenues (exclusive of items shown separately below)	—			361,408		227,105			(3,816		)	584,697
Selling, general and administrative expenses	50			69,044		27,119			—			96,213
Accretion of environmental liabilities	—			4,740		564			—			5,304
Depreciation and amortization	—			23,527		21,252			—			44,779
Income from operations	(50		)	64,704		30,888			—			95,542
Other income	—			314		2,840			—			3,154
Interest (expense) income	(14,472		)	49		(151		)	—			(14,574		)
Equity in earnings of subsidiaries	93,215			26,816		—			(120,031		)	—
Intercompany dividend income (expense)	—			—		6,612			(6,612		)	—
Intercompany interest income (expense)	—			16,207		(16,207		)	—			—
Income from continuing operations before provision for income taxes	78,693			108,090		23,982			(126,643		)	84,122
Provision for income taxes	10,334			14,364		(6,141		)	—			18,557
Income from continuing operations	68,359			93,726		30,123			(126,643		)	65,565
Income from discontinued operations, net of tax	—			—		2,794			—			2,794
Net income	$	68,359		$	93,726	$	32,917		$	(126,643	)	$	68,359

Following is the condensed consolidating statement of cash flows for the six months ended June 30, 2011 (in thousands):

	Clean Harbors, Inc.			U.S. Guarantor Subsidiaries			Foreign Non-Guarantor Subsidiaries			Total
Net cash from operating activities	$	4,474		$	28,763		$	42,392		$	75,629
Cash flows from investing activities:
Additions to property, plant and equipment	—			(40,991		)	(24,469		)	(65,460		)
Acquisitions, net of cash acquired	—			—			(205,922		)	(205,922		)
Costs to obtain or renew permits				(298		)	(768		)	(1,066		)
Proceeds from sales of fixed assets	—			361			4,530			4,891
Proceeds from sales of marketable securities	—			—			388			388
Investment in subsidiaries	(173,540		)	115,784			57,756			—
Net cash from investing activities	(173,540		)	74,856			(168,485		)	(267,169		)
Cash flows from financing activities:
Change in uncashed checks	—			11,329			2,417			13,746
Proceeds from exercise of stock options	783			—			—			783
Proceeds from employee stock purchase plan	1,556			—			—			1,556
Remittance of shares, net	(1,807		)	—			—			(1,807		)
Excess tax benefit of stock-based compensation	1,617			—			—			1,617
Deferred financing costs paid	(8,099		)	—			—			(8,099		)
Payments on capital leases	—			(318		)	(2,998		)	(3,316		)
Distribution of cash earned on employee participation plan	—			—			(189		)	(189		)
Issuance of senior secured notes, including premium	261,250			—			—			261,250
Dividends (paid) / received	10,186			(24,306		)	14,120			—
Interest (payments) / received	—			24,132			(24,132		)	—
Intercompany debt	—			(120,475		)	120,475			—
Net cash from financing activities	265,486			(109,638		)	109,693			265,541
Effect of exchange rate change on cash	—			—			1,365			1,365
Increase in cash and cash equivalents	96,420			(6,019		)	(15,035		)	75,366
Cash and cash equivalents, beginning of period	100,476			124,582			77,152			302,210
Cash and cash equivalents, end of period	$	196,896		$	118,563		$	62,117		$	377,576

Following is the condensed consolidating statement of cash flows for the six months ended June 30, 2010 (in thousands):

	Clean Harbors, Inc.			U.S. Guarantor Subsidiaries			Foreign Non-Guarantor Subsidiaries			Total
Net cash from operating activities	$	(155	)	$	65,613		$	31,859		$	97,317
Cash flows from investing activities:
Additions to property, plant and equipment	—			(17,535		)	(17,955		)	(35,490		)
Acquisitions, net of cash acquired	—			(13,751		)	—			(13,751		)
Costs to obtain or renew permits	—			(946		)	(1,246		)	(2,192		)
Proceeds from sale of fixed assets and assets held for sale	—			930			14,664			15,594
Proceeds from sale of marketable securities	—			—			2,575			2,575
Proceeds from sale of long-term investments	—			1,300			—			1,300
Proceeds from insurance settlement	—			—			1,336			1,336
Investment in subsidiaries	(236,700		)	236,700			—			—
Net cash from investing activities	(236,700		)	206,698			(626		)	(30,628		)
Cash flows from financing activities:
Change in uncashed checks	—			(1,317		)	(2,283		)	(3,600		)
Proceeds from exercise of stock options	318			—			—			318
Proceeds from employee stock purchase plan	1,187			—			—			1,187
Remittance of shares, net	(113		)	—			—			(113		)
Excess tax benefit of stock-based compensation	782			—			—			782
Deferred financing costs paid	(53		)	—			—			(53		)
Payments of capital leases	—			(79		)	(1,673		)	(1,752		)
Distribution of cash earned on employee participation plan	—			—			(148		)	(148		)
Interest (payments) / received	—			9,136			(9,136		)	—
Intercompany debt	236,700			(236,700		)	—			—
Net cash from financing activities	238,821			(228,960		)	(13,240		)	(3,379		)
Effect of exchange rate change on cash	—			—			(1,556		)	(1,556		)
Increase in cash and cash equivalents	1,966			43,351			16,437			61,754
Cash and cash equivalents, beginning of period	141,338			50,408			41,800			233,546
Cash and cash equivalents, end of period	$	143,304		$	93,759		$	58,237		$	295,300

XML



FAIR VALUE MEASUREMENTS (Details) (USD $)	6 Months Ended					3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010	Jun. 30, 2011 Quoted Prices in Active Markets for Identical Assets (Level 1)	Dec. 31, 2010 Quoted Prices in Active Markets for Identical Assets (Level 1)	Jun. 30, 2011 Significant Unobservable Inputs (Level 3)	Jun. 30, 2010 Significant Unobservable Inputs (Level 3)	Jun. 30, 2011 Significant Unobservable Inputs (Level 3)	Jun. 30, 2010 Significant Unobservable Inputs (Level 3)	Dec. 31, 2010 Significant Unobservable Inputs (Level 3)	Jun. 30, 2011 Total	Dec. 31, 2010 Total	Jun. 10, 2011 Peak Energy Services Ltd.'s ("Peak")
FAIR VALUE MEASUREMENTS
Temporary decline in fair value of securities	$ 400,000
Unrealized pre-tax gain (loss) on auction rate securities	(100,000)	100,000
Interest rate, resetting days (in days)	28
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Auction rate securities	5,311,000		5,437,000			5,311,000		5,311,000		5,437,000	5,311,000	5,437,000
Marketable securities	128,000		3,174,000	128,000	3,174,000						128,000	3,174,000
Percentage of outstanding common shares of acquiree already owned by company (as a percent)													3.15%
Changes in the entity's auction rate securities measured at fair value on a recurring basis using significant unobservable inputs (Level 3)
Balance at the beginning of the period						5,379,000	6,503,000	5,437,000	6,503,000
Sale of auction rate securities							(1,300,000)		(1,300,000)
Unrealized (losses) gains included in other comprehensive income						(68,000)	112,000	(126,000)	112,000
Balance at the end of the period						$ 5,311,000	$ 5,315,000	$ 5,311,000	$ 5,315,000

XML



CLOSURE AND POST-CLOSURE LIABILITIES (Tables)

6 Months Ended

Jun. 30, 2011

CLOSURE AND POST-CLOSURE LIABILITIES

Schedule of closure and post-closure liabilities

	Landfill Retirement Liability			Non-Landfill Retirement Liability			Total
Balance at January 1, 2011	$	29,756		$	8,923		$	38,679
New asset retirement obligations	1,169			—			1,169
Accretion	1,100			554			1,654
Changes in estimates recorded to statement of income	(400		)	29			(371		)
Other changes in estimates recorded to balance sheet	(4,681		)	121			(4,560		)
Settlement of obligations	(1,467		)	(306		)	(1,773		)
Currency translation and other	91			19			110
Balance at June 30, 2011	$	25,568		$	9,340		$	34,908

XML



CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Cash flows from operating activities:
Net income	$ 51,886	$ 68,359
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	52,396	44,779
Allowance for doubtful accounts	402	833
Amortization of deferred financing costs and debt discount	898	1,475
Accretion of environmental liabilities	4,796	5,304
Changes in environmental liability estimates	(773)	(3,893)
Deferred income taxes	819	388
Stock-based compensation	2,880	3,107
Excess tax benefit of stock-based compensation	(1,617)	(782)
Income tax benefit related to stock option exercises	1,617	777
Gains on sales of businesses		(2,678)
Other income	(2,413)	(3,154)
Environmental expenditures	(5,564)	(4,717)
Changes in assets and liabilities, net of acquisitions
Accounts receivable	18,063	(61,294)
Other current assets	(5,252)	(20,868)
Accounts payable	(33,024)	48,411
Other current liabilities	(9,485)	21,270
Net cash from operating activities	75,629	97,317
Cash flows from investing activities:
Additions to property, plant and equipment	(65,460)	(35,490)
Acquisitions, net of cash acquired	(205,922)	(13,751)
Additions to intangible assets, including costs to obtain or renew permits	(1,066)	(2,192)
Proceeds from sales of marketable securities	388	2,575
Proceeds from sales of fixed assets and assets held for sale	4,891	15,594
Proceeds from insurance settlement		1,336
Proceeds from sale of long-term investments		1,300
Net cash used in investing activities	(267,169)	(30,628)
Cash flows from financing activities:
Change in uncashed checks	13,746	(3,600)
Proceeds from exercise of stock options	783	318
Remittance of shares, net	(1,807)	(113)
Proceeds from employee stock purchase plan	1,556	1,187
Deferred financing costs paid	(8,099)	(53)
Payments on capital leases	(3,316)	(1,752)
Distribution of cash earned on employee participation plan	(189)	(148)
Excess tax benefit of stock-based compensation	1,617	782
Issuance of senior secured notes, including premium	261,250
Net cash from financing activities	265,541	(3,379)
Effect of exchange rate change on cash	1,365	(1,556)
Increase in cash and cash equivalents	75,366	61,754
Cash and cash equivalents, beginning of period	302,210	233,546
Cash and cash equivalents, end of period	377,576	295,300
Cash payments for interest and income taxes:
Interest paid	11,551	13,572
Income taxes paid	26,545	10,845
Non-cash investing and financing activities:
Property, plant and equipment accrued	24,586	4,738
Assets acquired through capital lease		9,418
Issuance of acquisition-related common stock, net		$ 1,015

XML



ADDITIONAL ACQUISITIONS

6 Months Ended

Jun. 30, 2011

ADDITIONAL ACQUISITIONS

ADDITIONAL ACQUISITIONS

(16) ADDITIONAL ACQUISITIONS

On July 29, 2011, the Company acquired from Logan International Inc. and certain of its subsidiaries substantially all of the assets of Logan’s Destiny Resource Services (“Destiny”) division. Destiny is engaged in the business of providing geospatial, line clearing and drilling services in Canada and the United States.  The purchase price was approximately CDN $38 million in cash, subject to a post-closing adjustment based upon an assumed target amount of working capital.  Acquisition related costs of $0.1 million were included in selling, general and administrative expenses in the Company’s consolidated statements of income for both the three and six months ended June 30, 2011.  The Company acquired Destiny to expand its growing Oil and Gas Field Services segment and expects Destiny to enhance the Company’s service offerings to its customers and its reputation as a leading provider of comprehensive field services for the oil and gas sectors. The Company is in the process of performing its acquisition accounting.

On May 31 and July 29, 2011, respectively, the Company signed an agreement to acquire all of the outstanding stock of a privately owned U.S. company which specializes in treating refinery waste streams primarily in the United States and an agreement to acquire all of the outstanding stock of a privately owned Canadian company which manufactures products relating to the Company’s lodging business. The combined purchase price for both such companies under such agreements is approximately U.S. $100 million. Each such proposed acquisition is subject to customary closing conditions, and no assurance can be given that either or both of such proposed acquisitions will be consummated.

The Company funded the acquisition of Destiny on July 29, 2011, and plans to the fund the acquisition of the two additional private companies described in the preceding paragraph, using a portion of the Company’s available cash at June 30, 2011.

XML



REMEDIAL LIABILITIES (Details) (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011
Changes to remedial liabilities
Balance at the beginning of the period	$ 137,613
Accretion	3,142
Changes in estimates recorded to statement of income	(402)
Settlement of obligations	(3,791)
Currency translation and other	610
Balance at the end of the period	137,172
Remedial Liabilities for Landfill Sites
Changes to remedial liabilities
Balance at the beginning of the period	5,511
Accretion	134
Changes in estimates recorded to statement of income	(8)
Settlement of obligations	(31)
Currency translation and other	96
Balance at the end of the period	5,702
Remedial Liabilities for Inactive Sites
Changes to remedial liabilities
Balance at the beginning of the period	82,354
Accretion	1,888
Changes in estimates recorded to statement of income	271
Settlement of obligations	(1,801)
Currency translation and other	6
Balance at the end of the period	82,718
Remedial Liabilities (Including Superfund) for Non-Landfill Operations
Changes to remedial liabilities
Balance at the beginning of the period	49,748
Accretion	1,120
Changes in estimates recorded to statement of income	(665)
Settlement of obligations	(1,959)
Currency translation and other	508
Balance at the end of the period	$ 48,752

XML



SIGNIFICANT ACCOUNTING POLICIES (Tables)

6 Months Ended

Jun. 30, 2011

SIGNIFICANT ACCOUNTING POLICIES

Schedule of asset classification and estimated useful life

Asset Classification	Estimated Useful Life
Buildings and building improvements
Buildings	30—40 years
Land, leasehold and building improvements	5—40 years
Camp equipment	12—15 years
Vehicles	3—12 years
Equipment
Capitalized software and computer equipment	3 years
Solar equipment	20 years
Containers and railcars	15—20 years
All other equipment	3—10 years
Furniture and fixtures	5—8 years

XML



BASIS OF PRESENTATION

6 Months Ended

Jun. 30, 2011

BASIS OF PRESENTATION

BASIS OF PRESENTATION

(1) BASIS OF PRESENTATION

The accompanying consolidated interim financial statements include the accounts of Clean Harbors, Inc. and its subsidiaries (collectively, “Clean Harbors” or the “Company”) and have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”) and, in the opinion of management, include all adjustments which are of a normal recurring nature, necessary for a fair presentation of the financial position, results of operations, and cash flows for the periods presented. The results for interim periods are not necessarily indicative of results for the entire year or any other interim periods. The financial statements presented herein should be read in connection with the financial statements included in the Company’s Current Report on Form 8-K filed on July 15, 2011.

On June 8, 2011, the Company’s Board of Directors authorized a two-for-one stock split of the Company’s common stock in the form of a stock dividend of one share for each outstanding share. The stock dividend was payable on July 26, 2011 to holders of record at the close of business on July 6, 2011. The stock split followed the approval, at the Company’s 2011 annual meeting of stockholders, of a proposal to increase the Company’s authorized shares of common stock from 40 million to 80 million. The stock split did not change the proportionate interest that a stockholder maintained in the Company. All share and per share information, including options, restricted and performance stock awards, stock option exercises, employee stock purchase plan purchases, common stock and additional paid-in capital accounts on the consolidated balance sheets and consolidated statements of income and stockholders’ equity, have been retroactively adjusted to reflect the two-for-one stock split. In addition, awards granted and weighted average fair value of awards granted in Note 12, “Stock-Based Compensation,” have also been retroactively adjusted.

During the quarter ended March 31, 2011, the Company re-aligned its management reporting structure. Under the new structure, the Company’s operations are managed in four segments: Technical Services, Field Services, Industrial Services and Oil and Gas Field Services. The new segment, Oil and Gas Field Services, consists of the previous Exploration Services segment, as well as certain departments that were re-assigned from the Industrial Services segment. In addition, certain departments from the Field Services segment were re-assigned to the Industrial Services segment. Accordingly, the Company re-aligned and re-allocated departmental costs being allocated among the segments to support these management reporting changes. The Company has recast the segment information to conform to the current year presentation. See Note 14, “Segment Reporting.”

The four operating segments consist of:

· Technical Services — provides a broad range of hazardous material management services including the packaging, collection, transportation, treatment and disposal of hazardous and non-hazardous waste at Company owned incineration, landfill, wastewater, and other treatment facilities.

· Field Services — provides a wide variety of environmental cleanup services on customer sites or other locations on a scheduled or emergency response basis including tank cleaning, decontamination, remediation, and spill cleanup.

· Industrial Services — provides industrial and specialty services, such as high-pressure and chemical cleaning, catalyst handling, decoking, material processing, surface rentals and industrial lodging services to refineries, chemical plants, oil sands facilities, pulp and paper mills, and other industrial facilities.

· Oil and Gas Field Services — provides fluid handling, fluid hauling, down hole servicing, surface rentals, exploration, mapping and directional boring services to the energy sector serving oil and gas exploration, production, and power generation.

Technical Services and Field Services are included as part of Clean Harbors Environmental Services, and Industrial Services and Oil and Gas Field Services are included as part of Clean Harbors Energy and Industrial Services.

XML



INCOME TAXES

6 Months Ended

Jun. 30, 2011

INCOME TAXES

INCOME TAXES

(10) INCOME TAXES

The Company’s effective tax rate (including taxes on income from discontinued operations) for the three and six months ended June 30, 2011 was 33.9 percent and 35.4 percent, respectively, compared to 17.7 percent and 22.4 percent, respectively, for the same periods in 2010. The increase in the effective tax rate for the six months ended June 30, 2011 was primarily attributable to the decrease in unrecognized tax benefits recorded in the second quarter of 2010. Excluding this discrete item, the rate decreased by 2.4% as compared to the six months ended June 30, 2010, primarily due to the increased profits attributable to Canada, which has a lower corporate income tax rate as compared to the United States, and the recording of an energy investment tax credit for a solar energy project placed in service.

As of June 30, 2011, the Company’s unrecognized tax benefits and related reserves were $67.5 million, which included $21.3 million of interest and $6.6 million of penalties. As of December 31, 2010, the Company’s unrecognized tax benefits and related reserves were $65.9 million, which included $19.7 million of interest and $6.5 million of penalties.

Due to expiring statute of limitation periods, the Company anticipates that total unrecognized tax benefits and related reserves, other than adjustments for additional accruals for interest and penalties and foreign currency translation, will decrease by approximately $6.3 million within the next twelve months.  The $6.3 million (which includes interest and penalties of $2.7 million) is primarily related to a historical Canadian business combination and, if realized, will be recorded in earnings and therefore will impact the effective income tax rate.

XML



ADDITIONAL ACQUISITIONS (Details)	1 Months Ended
	Jul. 31, 2011 Logan International Inc. USD ($)	Jul. 29, 2011 Logan International Inc. CAD	Jul. 29, 2011 Privately owned U.S. and Canadian company USD ($)
Additional acquisitions
Purchase price in cash		38,000,000
Acquisition related costs	100,000
Total combined purchase price of acquisition			$ 100,000,000
Number of additional businesses to be acquired			2

XML



SEGMENT REPORTING (Tables)

6 Months Ended

Jun. 30, 2011

SEGMENT REPORTING

Reconciliation of third party revenues to direct revenues

	For the Three Months Ended June 30, 2011
	TechnicalServices		FieldServices			Industrial Services			Oil and Gas Field Services		CorporateItems			Totals
Third party revenues	$	202,330	$	72,615		$	111,376		$	60,617	$	297		$	447,235
Intersegment revenues, net	4,210		(5,623		)	(1,087		)	2,964		(464		)	—
Direct revenues	$	206,540	$	66,992		$	110,289		$	63,581	$	(167	)	$	447,235

	For the Three Months Ended June 30, 2010
	Technical Services		Field Services (1)			Industrial Services			Oil and Gas Field Services		Corporate Items			Totals
Third party revenues	$	167,409	$	162,723		$	98,804		$	42,663	$	40		$	471,639
Intersegment revenues, net	7,137		(9,086		)	(405		)	2,715		(361		)	—
Direct revenues	$	174,546	$	153,637		$	98,399		$	45,378	$	(321)		$	471,639

	For the Six Months Ended June 30, 2011
	TechnicalServices		FieldServices			Industrial Services			Oil and Gas Field Services		CorporateItems			Totals
Third party revenues	$	387,777	$	134,874		$	219,959		$	139,251	$	336		$	882,197
Intersegment revenues, net	9,351		(9,574		)	(3,960		)	5,157		(974		)	—
Direct revenues	$	397,128	$	125,300		$	215,999		$	144,408	$	(638	)	$	882,197

	For the Six Months Ended June 30, 2010
	Technical Services		Field Services (1)			Industrial Services			Oil and Gas Field Services		Corporate Items			Totals
Third party revenues	$	320,936	$	213,376		$	191,124		$	101,163	$	(64	)	$	826,535
Intersegment revenues, net	12,076		(13,263		)	(1,631		)	3,622		(804		)	—
Direct revenues	$	333,012	$	200,113		$	189,493		$	104,785	$	(868	)	$	826,535

(1)During the three and six months ended June 30, 2010, third party revenues for the Field Services segment included revenues associated with the oil spill response efforts in the Gulf of Mexico of $108.6 million.

Reconciliation to consolidated statements of income to adjusted EBITDA

	For the Three Months Ended  June 30,						For the Six Months Ended June 30,
	2011			2010			2011			2010
Adjusted EBITDA:
Technical Services	$	59,614		$	44,385		$	104,951		$	77,565
Field Services	12,515			41,603			18,846			46,634
Industrial Services	25,862			24,122			49,205			43,982
Oil and Gas Field Services	8,427			5,966			23,092			17,462
Corporate Items	(25,191		)	(19,446		)	(47,276		)	(40,018		)
Total	$	81,227		$	96,630		$	148,818		$	145,625
Reconciliation to Consolidated Statements of Income:
Accretion of environmental liabilities	$	2,407		$	2,602		$	4,796		$	5,304
Depreciation and amortization	26,936			22,105			52,396			44,779
Income from operations	51,884			71,923			91,626			95,542
Other income	(2,868		)	(2,708		)	(5,767		)	(3,154		)
Interest expense, net of interest income	10,642			7,646			17,120			14,574
Income from continuing operations before provision for income taxes	$	44,110		$	66,985		$	80,273		$	84,122

PP&E and intangible assets by segment

	June  30, 2011		December 31, 2010
Property, plant and equipment, net
Technical Services	$	266,968	$	259,582
Field Services	34,821		32,311
Industrial Services	221,852		180,781
Oil and Gas Field Services	283,384		151,244
Corporate or other assets	41,251		31,476
Total property, plant and equipment, net	$	848,276	$	655,394
Intangible assets:
Technical Services
Goodwill	$	33,654	$	33,448
Permits and other intangibles, net	65,089		66,075
Total Technical Services	98,743		99,523
Field Services
Goodwill	3,088		3,088
Permits and other intangibles, net	3,491		3,651
Total Field Services	6,579		6,739
Industrial Services
Goodwill	28,583		10,934
Permits and other intangibles, net	18,147		17,906
Total Industrial Services	46,730		28,840
Oil and Gas Field Services
Goodwill	23,186		12,782
Permits and other intangibles, net	40,341		26,768
Total Oil and Gas Field Services	63,527		39,550
Total	$	215,579	$	174,652

Total assets by segment

	June 30, 2011		December 31, 2010
Technical Services	$	529,173	$	525,286
Field Services	44,494		35,253
Industrial Services	279,602		221,472
Oil and Gas Field Services	419,870		272,479
Corporate Items	691,941		547,985
Total	$	1,965,080	$	1,602,475

Total assets by geographical area

	June 30, 2011		December 31, 2010
United States	$	1,060,846	$	933,550
Canada	899,986		664,534
Other foreign	4,248		4,391
Total	$	1,965,080	$	1,602,475

XML



SEGMENT REPORTING

6 Months Ended

Jun. 30, 2011

SEGMENT REPORTING

SEGMENT REPORTING

(14) SEGMENT REPORTING

During the quarter ended March 31, 2011, the Company re-aligned its management reporting structure. Under the new structure, the Company’s operations are managed in four reportable segments: Technical Services, Field Services, Industrial Services and Oil and Gas Field Services. The new segment, Oil and Gas Field Services, consists of the previous Exploration Services segment, as well as certain oil and gas related field services departments that were re-assigned from the Industrial Services segment. In addition, certain departments from the Field Services segment were re-assigned to the Industrial Services segment.  Accordingly, the Company re-aligned and re-allocated departmental costs being allocated among the segments to support these management reporting changes.  The Company has recast the segment information to conform to the current year presentation.

Performance of the segments is evaluated on several factors, of which the primary financial measure is “Adjusted EBITDA,” which consists of net income plus accretion of environmental liabilities, depreciation and amortization, net interest expense, and provision for income taxes. Also excluded are other income and income from discontinued operations, net of tax as these amounts are not considered part of usual business operations. Transactions between the segments are accounted for at the Company’s estimate of fair value based on similar transactions with outside customers.

The operations not managed through the Company’s four operating segments are recorded as “Corporate Items.” Corporate Items revenues consist of two different operations for which the revenues are insignificant. Corporate Items cost of revenues represents certain central services that are not allocated to the four operating segments for internal reporting purposes. Corporate Items selling, general and administrative expenses include typical corporate items such as legal, accounting and other items of a general corporate nature that are not allocated to the Company’s four operating segments.

The following table reconciles third party revenues to direct revenues for the three- and six-month periods ended June 30, 2011 and 2010 (in thousands). Third party revenue is revenue billed to outside customers by a particular segment. Direct revenue is the revenue allocated to the segment performing the provided service. The Company analyzes results of operations based on direct revenues because the Company believes that these revenues and related expenses best reflect the manner in which operations are managed.

	For the Three Months Ended June 30, 2011
	TechnicalServices		FieldServices			Industrial Services			Oil and Gas Field Services		CorporateItems			Totals
Third party revenues	$	202,330	$	72,615		$	111,376		$	60,617	$	297		$	447,235
Intersegment revenues, net	4,210		(5,623		)	(1,087		)	2,964		(464		)	—
Direct revenues	$	206,540	$	66,992		$	110,289		$	63,581	$	(167	)	$	447,235

	For the Three Months Ended June 30, 2010
	Technical Services		Field Services (1)			Industrial Services			Oil and Gas Field Services		Corporate Items			Totals
Third party revenues	$	167,409	$	162,723		$	98,804		$	42,663	$	40		$	471,639
Intersegment revenues, net	7,137		(9,086		)	(405		)	2,715		(361		)	—
Direct revenues	$	174,546	$	153,637		$	98,399		$	45,378	$	(321)		$	471,639

	For the Six Months Ended June 30, 2011
	TechnicalServices		FieldServices			Industrial Services			Oil and Gas Field Services		CorporateItems			Totals
Third party revenues	$	387,777	$	134,874		$	219,959		$	139,251	$	336		$	882,197
Intersegment revenues, net	9,351		(9,574		)	(3,960		)	5,157		(974		)	—
Direct revenues	$	397,128	$	125,300		$	215,999		$	144,408	$	(638	)	$	882,197

	For the Six Months Ended June 30, 2010
	Technical Services		Field Services (1)			Industrial Services			Oil and Gas Field Services		Corporate Items			Totals
Third party revenues	$	320,936	$	213,376		$	191,124		$	101,163	$	(64	)	$	826,535
Intersegment revenues, net	12,076		(13,263		)	(1,631		)	3,622		(804		)	—
Direct revenues	$	333,012	$	200,113		$	189,493		$	104,785	$	(868	)	$	826,535

(1)During the three and six months ended June 30, 2010, third party revenues for the Field Services segment included revenues associated with the oil spill response efforts in the Gulf of Mexico of $108.6 million.

The following table presents information used by management by reported segment (in thousands). The Company does not allocate interest expense, income taxes, depreciation, amortization, accretion of environmental liabilities, and other income to segments.

	For the Three Months Ended  June 30,						For the Six Months Ended June 30,
	2011			2010			2011			2010
Adjusted EBITDA:
Technical Services	$	59,614		$	44,385		$	104,951		$	77,565
Field Services	12,515			41,603			18,846			46,634
Industrial Services	25,862			24,122			49,205			43,982
Oil and Gas Field Services	8,427			5,966			23,092			17,462
Corporate Items	(25,191		)	(19,446		)	(47,276		)	(40,018		)
Total	$	81,227		$	96,630		$	148,818		$	145,625
Reconciliation to Consolidated Statements of Income:
Accretion of environmental liabilities	$	2,407		$	2,602		$	4,796		$	5,304
Depreciation and amortization	26,936			22,105			52,396			44,779
Income from operations	51,884			71,923			91,626			95,542
Other income	(2,868		)	(2,708		)	(5,767		)	(3,154		)
Interest expense, net of interest income	10,642			7,646			17,120			14,574
Income from continuing operations before provision for income taxes	$	44,110		$	66,985		$	80,273		$	84,122

The following table presents assets by reported segment and in the aggregate (in thousands):

	June  30, 2011		December 31, 2010
Property, plant and equipment, net
Technical Services	$	266,968	$	259,582
Field Services	34,821		32,311
Industrial Services	221,852		180,781
Oil and Gas Field Services	283,384		151,244
Corporate or other assets	41,251		31,476
Total property, plant and equipment, net	$	848,276	$	655,394
Intangible assets:
Technical Services
Goodwill	$	33,654	$	33,448
Permits and other intangibles, net	65,089		66,075
Total Technical Services	98,743		99,523
Field Services
Goodwill	3,088		3,088
Permits and other intangibles, net	3,491		3,651
Total Field Services	6,579		6,739
Industrial Services
Goodwill	28,583		10,934
Permits and other intangibles, net	18,147		17,906
Total Industrial Services	46,730		28,840
Oil and Gas Field Services
Goodwill	23,186		12,782
Permits and other intangibles, net	40,341		26,768
Total Oil and Gas Field Services	63,527		39,550
Total	$	215,579	$	174,652

The following table presents the total assets by reported segment (in thousands):

	June 30, 2011		December 31, 2010
Technical Services	$	529,173	$	525,286
Field Services	44,494		35,253
Industrial Services	279,602		221,472
Oil and Gas Field Services	419,870		272,479
Corporate Items	691,941		547,985
Total	$	1,965,080	$	1,602,475

The following table presents the total assets by geographical area (in thousands):

	June 30, 2011		December 31, 2010
United States	$	1,060,846	$	933,550
Canada	899,986		664,534
Other foreign	4,248		4,391
Total	$	1,965,080	$	1,602,475

XML



CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data	Jun. 30, 2011	Dec. 31, 2010
CONSOLIDATED BALANCE SHEETS
Accounts receivable, allowances aggregating	$ 15,729	$ 23,704
Permits and other intangibles, accumulated amortization	67,035	60,633
Closure and post-closure liabilities, current portion	6,313	5,849
Remedial liabilities, current portion	$ 9,313	$ 8,669
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, Authorized shares (in shares)	80,000,000	80,000,000
Common stock, issued shares (in shares)	52,986,122	52,772,392
Common stock, outstanding shares (in shares)	52,986,122	52,772,392

XML



BASIS OF PRESENTATION (Details)	1 Months Ended	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2011	Jun. 08, 2011	Dec. 31, 2010
BASIS OF PRESENTATION
Authorized stock split declared, number of shares per each share held	2	2
Common stock, authorized shares, prior to increase (in shares)			40,000,000
Common stock, Authorized shares (in shares)		80,000,000	80,000,000	80,000,000
Number of operating segments		4

XML



COMMITMENTS AND CONTINGENCIES (Details)			3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended				12 Months Ended	3 Months Ended	12 Months Ended	21 Months Ended	12 Months Ended	1 Months Ended			3 Months Ended			12 Months Ended
	Jun. 30, 2011 USD ($)	Dec. 31, 2010 USD ($)	Jun. 30, 2011 Legal and Administrative Proceedings USD ($)	Dec. 31, 2010 Legal and Administrative Proceedings USD ($)	Jun. 30, 2011 Ville Mercier CAD	Dec. 31, 1999 Ville Mercier	Dec. 31, 1968 Ville Mercier	Jun. 30, 2011 Ville Mercier USD ($)	Dec. 31, 2010 Ville Mercier USD ($)	Dec. 31, 2006 Deer Trail, Colorado Facility	Jun. 30, 2011 Superfund Proceedings	Dec. 31, 2002 Superfund Proceedings	May 31, 2006 Superfund Proceedings	Dec. 31, 2002 Wichita Property	May 31, 2007 Casmalia Site	Jun. 30, 2011 Marine Shale Site USD ($)	Dec. 31, 2010 Marine Shale Site USD ($)	Jun. 30, 2011 Certain Other Third Party Sites USD ($)	Jun. 30, 2011 Federal and State Enforcement Actions USD ($)	Dec. 31, 2010 Federal and State Enforcement Actions	Dec. 31, 2010 Other Contingencies USD ($)
Legal and Administrative Proceedings
Reserves relating to legal and administrative proceedings	$ 29,600,000	$ 29,700,000	$ 27,500,000
Reserves relating to legal and administrative proceedings																			2,100,000
Possible increase in legal and administrative proceedings			2,700,000	2,800,000
Number of permits issued by government, for dumping inorganic liquid							2
Number of neighboring municipalities filing separate legal proceedings against the Mercier Subsidiary and the Government of Quebec						3
Number of municipalities filing separate legal proceedings, total					4
Damages claimed by municipalities					1,600,000
Suit against alleged past costs					17,400,000
Accrued remedial liabilities	137,172,000	137,613,000						14,300,000	13,500,000
Number of lawsuits filed										2
Superfund Proceedings
Number of sites subject to proceedings under federal or state superfund laws											62
Number of sites owned by the entity subject to proceedings under federal or state superfund laws											2
Number of sites owned by third parties subject to proceedings under federal or state Superfund laws												60
Third party sites arising out of acquisition of assets												35
Third party sites requiring expenditure on remediation											12
Third party sites requiring expenditure on remediation being contested by the entity											1
Number of sites for which environmental remediation expense is settled											10
Number of sites for which environmental remediation expense is not required											13
Number of sites owned by third party excluded from cleanup or related liabilities											2
State-designated superfund site acquired, total acres														1,400
Notices received from owners of third party sites seeking indemnification from the company													5
Third party sites where EPA requested information on prior owner															1
Remaining reserves relating to listed third party sites																3,800,000	3,800,000
Indemnification agreement with third party sites																		14
Additional cleanup liabilities, maximum																		100,000
Federal and State Enforcement Actions
Number of proceedings relating to waste treatment																			2	3
Sanctions relating to waste treatment																			100,000
Other Contingencies
Payment to acquire minority interest in a privately-held company																					10,500,000
Proceeds from irrevocable call right exercised by the privately-held company on shares held																					$ 10,500,000

XML



FINANCING ARRANGEMENTS (Details) (USD $)			1 Months Ended	6 Months Ended			1 Months Ended								6 Months Ended
	Jun. 30, 2011	Dec. 31, 2010	Mar. 31, 2011 Senior secured notes	Jun. 30, 2011 Senior secured notes	Dec. 31, 2010 Senior secured notes	May 31, 2011 Revolving credit facility	May 31, 2011 Revolving credit facility Canadian subsidiaries	Jun. 30, 2011 Revolving credit facility LIBOR loans	Jun. 30, 2011 Revolving credit facility Base rate loans	May 31, 2011 Letters of credit	May 31, 2011 Letters of credit Canadian subsidiaries	May 31, 2011 Previous revolving credit facility	Jun. 30, 2011 Previous revolving credit facility LIBOR loans	Jun. 30, 2011 Previous revolving credit facility Base rate loans	Jun. 30, 2011 LIBOR loans	Jun. 30, 2011 Base rate loans
Financing arrangements
Senior secured notes, at 7.625%, due on August 15, 2016				$ 520,000,000	$ 270,000,000
Senior secured notes, interest rate (as a percent)				7.625%	7.625%
Unamortized notes premium and discount, net	4,994,000	(5,993,000)
Long-term obligations	524,994,000	264,007,000
Revolving credit facility, maximum borrowing capacity						150,000,000	100,000,000			140,000,000	75,000,000	120,000,000
Senior secured notes issued, aggregate principal amount			250,000,000
Purchase price of debt instrument under purchase agreement (as a percent)				104.50%
Effective yield to maturity on debt instrument (as a percent)				6.132%
Net proceeds from issuance and sale of new notes, after deducting initial purchasers' discount and estimated other transaction expenses				255,600,000
Fair-value of outstanding long-term debt				$ 538,300,000	$ 278,300,000
2012 redemption price as a percentage of the principle amount (as a percent)				103.813%
2013 redemption price as a percentage of the principle amount (as a percent)				101.906%
2014 and thereafter redemption price as a percentage of the principle amount (as a percent)				100.00%
Maximum percentage of the aggregate principal amount of notes redeemable on or after September 29, 2011 but prior to August 15, 2012 (as a percent)				10.00%
Redemption price as a percentage of principal amount of notes redeemable on or after September 29, 2011 but prior to August 15, 2012 (as a percent)				103.00%
Maximum percentage of the aggregate principal amount of notes redeemable prior to August 15, 2012 with net proceeds of certain equity offerings (as a percent)				35.00%
Percentage of redemption price to principle amount (as a percent)				107.625%
Percentage of principal amount at which the entity may redeem some or all of the notes prior to April 1, 2013 (as a percent)				100.00%
Percentage of principal amount at which notes may be required to be repurchased in event of change of control (as a percent)				101.00%
Percentage of principal amount at which notes may be required to be repurchased in event of sale of assets under specified circumstances (as a percent)				100.00%
Maximum number of days following issuance of debt in which the exchange offer is to be consummated (in days)				180
Maximum number of days to declare shelf registration statement effective from the date of specific events (in days)				90
Special interest on default of registration obligations under the registration rights agreement				1.00%
Number of subsidiaries to be added as a party to the facility							1
Variable interest rate, basis															LIBOR	BofA's base rate
Applicable margin on variable interest rate basis, low end of range (as a percent)								1.75%	0.75%				2.25%	1.25%
Applicable margin on variable interest rate basis, high end of range (as a percent)								2.25%	1.25%				2.75%	1.75%

XML



INCOME TAXES (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010
INCOME TAXES
The Company's effective tax rate (including taxes on income from discontinued operations) (as a percent)	33.90%	17.70%	35.40%	22.40%
Decrease in effective income tax rate			2.40%
Unrecognized tax benefits and related reserves including interest and penalties	$ 67.5		$ 67.5		$ 65.9
Unrecognized tax benefits, interest	21.3		21.3		19.7
Unrecognized tax benefits, penalties	6.6		6.6		6.5
Anticipated decrease in unrecognized tax benefits (including interest and penalties) in the next twelve months	6.3		6.3
Anticipated decrease in interest and penalties included in unrecognized tax benefits, in the next twelve months	$ 2.7		$ 2.7

XML



GUARANTOR AND NON-GUARANTOR SUBSIDIARIES FINANCIAL INFORMATION (Details 4) (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Condensed consolidating statement of cash flows
Net cash from operating activities	$ 75,629	$ 97,317
Cash flows from investing activities:
Additions to property, plant and equipment	(65,460)	(35,490)
Acquisitions, net of cash acquired	(205,922)	(13,751)
Additions to intangible assets, including costs to obtain or renew permits	(1,066)	(2,192)
Proceeds from sales of fixed assets and assets held for sale	4,891	15,594
Proceeds from sales of marketable securities	388	2,575
Proceeds from sale of long-term investments		1,300
Proceeds from insurance settlement		1,336
Net cash used in investing activities	(267,169)	(30,628)
Cash flows from financing activities:
Change in uncashed checks	13,746	(3,600)
Proceeds from exercise of stock options	783	318
Proceeds from employee stock purchase plan	1,556	1,187
Remittance of shares, net	(1,807)	(113)
Excess tax benefit of stock-based compensation	1,617	782
Deferred financing costs paid	(8,099)	(53)
Payments on capital leases	(3,316)	(1,752)
Distribution of cash earned on employee participation plan	(189)	(148)
Issuance of senior secured notes, including premium	261,250
Net cash from financing activities	265,541	(3,379)
Effect of exchange rate change on cash	1,365	(1,556)
Increase in cash and cash equivalents	75,366	61,754
Cash and cash equivalents, beginning of period	302,210	233,546
Cash and cash equivalents, end of period	377,576	295,300
Clean Harbors, Inc.
Condensed consolidating statement of cash flows
Net cash from operating activities	4,474	(155)
Cash flows from investing activities:
Investment in subsidiaries	(173,540)	(236,700)
Net cash used in investing activities	(173,540)	(236,700)
Cash flows from financing activities:
Proceeds from exercise of stock options	783	318
Proceeds from employee stock purchase plan	1,556	1,187
Remittance of shares, net	(1,807)	(113)
Excess tax benefit of stock-based compensation	1,617	782
Deferred financing costs paid	(8,099)	(53)
Issuance of senior secured notes, including premium	261,250
Dividends (paid) / received	10,186
Intercompany debt		236,700
Net cash from financing activities	265,486	238,821
Increase in cash and cash equivalents	96,420	1,966
Cash and cash equivalents, beginning of period	100,476	141,338
Cash and cash equivalents, end of period	196,896	143,304
U.S. Guarantor Subsidiaries
Condensed consolidating statement of cash flows
Net cash from operating activities	28,763	65,613
Cash flows from investing activities:
Additions to property, plant and equipment	(40,991)	(17,535)
Acquisitions, net of cash acquired		(13,751)
Additions to intangible assets, including costs to obtain or renew permits	(298)	(946)
Proceeds from sales of fixed assets and assets held for sale	361	930
Proceeds from sale of long-term investments		1,300
Investment in subsidiaries	115,784	236,700
Net cash used in investing activities	74,856	206,698
Cash flows from financing activities:
Change in uncashed checks	11,329	(1,317)
Payments on capital leases	(318)	(79)
Dividends (paid) / received	(24,306)
Interest (payments) / received	24,132	9,136
Intercompany debt	(120,475)	(236,700)
Net cash from financing activities	(109,638)	(228,960)
Increase in cash and cash equivalents	(6,019)	43,351
Cash and cash equivalents, beginning of period	124,582	50,408
Cash and cash equivalents, end of period	118,563	93,759
Foreign Non-Guarantor Subsidiaries
Condensed consolidating statement of cash flows
Net cash from operating activities	42,392	31,859
Cash flows from investing activities:
Additions to property, plant and equipment	(24,469)	(17,955)
Acquisitions, net of cash acquired	(205,922)
Additions to intangible assets, including costs to obtain or renew permits	(768)	(1,246)
Proceeds from sales of fixed assets and assets held for sale	4,530	14,664
Proceeds from sales of marketable securities	388	2,575
Proceeds from insurance settlement		1,336
Investment in subsidiaries	57,756
Net cash used in investing activities	(168,485)	(626)
Cash flows from financing activities:
Change in uncashed checks	2,417	(2,283)
Payments on capital leases	(2,998)	(1,673)
Distribution of cash earned on employee participation plan	(189)	(148)
Dividends (paid) / received	14,120
Interest (payments) / received	(24,132)	(9,136)
Intercompany debt	120,475
Net cash from financing activities	109,693	(13,240)
Effect of exchange rate change on cash	1,365	(1,556)
Increase in cash and cash equivalents	(15,035)	16,437
Cash and cash equivalents, beginning of period	77,152	41,800
Cash and cash equivalents, end of period	$ 62,117	$ 58,237

XML



SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
SIGNIFICANT ACCOUNTING POLICIES
Interest capitalized to fixed assets	$ 0.4	$ 0.2
Depreciation and amortization expense, property, plant and equipment	$ 42.0	$ 35.9
Buildings
Property, Plant and Equipment (excluding landfill assets):
Estimated useful life, minimum (in years)	30
Estimated useful life, maximum (in years)	40
Land, leasehold and building improvements
Property, Plant and Equipment (excluding landfill assets):
Estimated useful life, minimum (in years)	5
Estimated useful life, maximum (in years)	40
Weighted average life (in years)	9.3
Camp Equipment
Property, Plant and Equipment (excluding landfill assets):
Estimated useful life, minimum (in years)	12
Estimated useful life, maximum (in years)	15
Vehicles
Property, Plant and Equipment (excluding landfill assets):
Estimated useful life, minimum (in years)	3
Estimated useful life, maximum (in years)	12
Capitalized software and computer equipment
Property, Plant and Equipment (excluding landfill assets):
Estimated useful life, maximum (in years)	3
Solar equipment
Property, Plant and Equipment (excluding landfill assets):
Estimated useful life, maximum (in years)	20
Containers and railcars
Property, Plant and Equipment (excluding landfill assets):
Estimated useful life, minimum (in years)	15
Estimated useful life, maximum (in years)	20
All other equipment
Property, Plant and Equipment (excluding landfill assets):
Estimated useful life, minimum (in years)	3
Estimated useful life, maximum (in years)	10
Furniture and fixtures
Property, Plant and Equipment (excluding landfill assets):
Estimated useful life, minimum (in years)	5
Estimated useful life, maximum (in years)	8