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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
_______________________
FORM 10-Q
QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
FOR THE QUARTERLY PERIOD ENDED
SEPTEMBERJUNE 30, 20192020
OR
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

FOR THE TRANSITION PERIOD FROM         TO       

Commission File Number 001-34223
_______________________
CLEAN HARBORS, INC.INC.
(Exact name of registrant as specified in its charter)
Massachusetts04-2997780
(State or Other Jurisdiction of Incorporation or Organization)(IRS Employer Identification No.)
42 Longwater DriveNorwellMANorwellMA02061-9149
(Address of Principal Executive Offices)(Zip Code)
Registrant’s Telephone Number, Including area code: (781) (781) 792-5000
Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading SymbolName of each exchange on which registered
Common Stock, $0.01 par valueCLHNew York Stock Exchange
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports) and (2) has been subject to such filing requirements for the past 90 days. Yes   No 
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted 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 such files). Yes    No 
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and "emerging growth company" in Rule 12b-2 of the Exchange Act. (Check one):
Large accelerated filerAccelerated filer
Non-accelerated filerSmaller reporting company
Emerging growth company
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.
Indicate by check mark whether the registrant is a shell company (as defined by Rule 12b-2 of the Exchange Act). Yes   No 
The number of shares of Common Stock, $0.01 par value, of the registrant outstanding at October 25, 2019July 31, 2020 was 55,809,04855,638,158.





CLEAN HARBORS, INC.

QUARTERLY REPORT ON FORM 10-Q

TABLE OF CONTENTS

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Table of Contents

CLEAN HARBORS, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(in thousands)
September 30, 2019 December 31, 2018June 30, 2020December 31, 2019
ASSETS(unaudited)  ASSETS(unaudited)
Current assets:   Current assets:
Cash and cash equivalents$282,233
 $226,507
Cash and cash equivalents$447,366  $371,991  
Short-term marketable securities46,877
 52,856
Short-term marketable securities59,326  42,421  
Accounts receivable, net of allowances aggregating $37,998 and $44,315, respectively641,667
 606,952
Accounts receivable, net of allowances aggregating $44,632 and $38,711, respectivelyAccounts receivable, net of allowances aggregating $44,632 and $38,711, respectively572,373  644,738  
Unbilled accounts receivable58,842
 54,794
Unbilled accounts receivable44,761  56,326  
Deferred costs21,939
 18,770
Deferred costs18,715  21,746  
Inventories and supplies210,827
 199,479
Inventories and supplies219,808  214,744  
Prepaid expenses and other current assets38,199
 42,800
Prepaid expenses and other current assets69,455  48,942  
Total current assets1,300,584
 1,202,158
Total current assets1,431,804  1,400,908  
Property, plant and equipment, net1,593,993
 1,561,978
Property, plant and equipment, net1,553,808  1,588,151  
Other assets:   Other assets:
Operating lease right-of-use assets164,302
 
Operating lease right-of-use assets153,522  162,206  
Goodwill524,581
 514,189
Goodwill523,154  525,013  
Permits and other intangibles, net425,863
 441,875
Permits and other intangibles, net400,448  419,066  
Other12,539
 18,121
Other14,893  13,560  
Total other assets1,127,285
 974,185
Total other assets1,092,017  1,119,845  
Total assets$4,021,862
 $3,738,321
Total assets$4,077,629  $4,108,904  
   
LIABILITIES AND STOCKHOLDERS' EQUITY   LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:   Current liabilities:
Current portion of long-term obligations$7,535
 $7,535
Current portion of long-term obligations$7,535  $7,535  
Accounts payable277,545
 276,461
Accounts payable188,340  298,375  
Deferred revenue73,157
 61,843
Deferred revenue61,902  73,370  
Accrued expenses253,455
 233,405
Accrued expenses289,414  276,540  
Current portion of closure, post-closure and remedial liabilities26,986
 23,034
Current portion of closure, post-closure and remedial liabilities19,129  23,301  
Current portion of operating lease liabilities41,364
 
Current portion of operating lease liabilities38,620  40,979  
Total current liabilities680,042
 602,278
Total current liabilities604,940  720,100  
Other liabilities:   Other liabilities:
Closure and post-closure liabilities, less current portion of $9,896 and $9,592, respectively64,263
 60,339
Remedial liabilities, less current portion of $17,090 and $13,442, respectively100,179
 107,575
Closure and post-closure liabilities, less current portion of $5,708 and $7,283, respectivelyClosure and post-closure liabilities, less current portion of $5,708 and $7,283, respectively76,933  68,368  
Remedial liabilities, less current portion of $13,421 and $16,018, respectivelyRemedial liabilities, less current portion of $13,421 and $16,018, respectively99,062  98,155  
Long-term obligations, less current portion1,555,257
 1,565,021
Long-term obligations, less current portion1,626,871  1,554,116  
Operating lease liabilities, less current portion122,668
 
Operating lease liabilities, less current portion115,089  121,020  
Deferred taxes, unrecognized tax benefits and other long-term liabilities263,658
 233,352
Deferred taxes, unrecognized tax benefits and other long-term liabilities300,763  277,332  
Total other liabilities2,106,025
 1,966,287
Total other liabilities2,218,718  2,118,991  
Commitments and contingent liabilities (See Note 16)


 


Commitments and contingent liabilities (See Note 16)
Stockholders’ equity:   Stockholders’ equity:
Common stock, $.01 par value:   
Authorized 80,000,000 shares; issued and outstanding 55,807,524 and 55,847,261 shares, respectively558
 558
Common stock, $0.01 par value: authorized 80,000,000 shares; issued and outstanding 55,612,860 and 55,797,734 shares, respectivelyCommon stock, $0.01 par value: authorized 80,000,000 shares; issued and outstanding 55,612,860 and 55,797,734 shares, respectively556  558  
Additional paid-in capital648,184
 655,415
Additional paid-in capital629,755  644,412  
Accumulated other comprehensive loss(223,690) (223,371)Accumulated other comprehensive loss(251,829) (210,051) 
Accumulated earnings810,743
 737,154
Accumulated earnings875,489  834,894  
Total stockholders’ equity1,235,795
 1,169,756
Total stockholders’ equity1,253,971  1,269,813  
Total liabilities and stockholders’ equity$4,021,862
 $3,738,321
Total liabilities and stockholders’ equity$4,077,629  $4,108,904  
The accompanying notes are an integral part of these unaudited consolidated financial statements.

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CLEAN HARBORS, INC. AND SUBSIDIARIES

UNAUDITED CONSOLIDATED STATEMENTS OF OPERATIONS

(in thousands, except per share amounts)

Three Months EndedSix Months Ended
June 30,June 30,
2020201920202019
Revenues:
Service revenues$637,839  $715,085  $1,357,706  $1,371,743  
Product revenues72,161  153,593  210,857  277,774  
Total revenues710,000  868,678  1,568,563  1,649,517  
Cost of revenues: (exclusive of items shown separately below)
Service revenues411,065  480,229  903,781  943,712  
Product revenues59,616  114,704  173,566  215,585  
Total cost of revenues470,681  594,933  1,077,347  1,159,297  
Selling, general and administrative expenses103,839  123,920  233,146  238,732  
Accretion of environmental liabilities2,766  2,560  5,327  5,134  
Depreciation and amortization72,494  74,217  147,027  149,572  
Income from operations60,220  73,048  105,716  96,782  
Other (expense) income, net(500) (564) (2,865) 2,419  
Loss on sale of businesses(184) —  (3,258) —  
Interest expense, net of interest income of $668, $903, $1,666 and $1,829, respectively(18,654) (20,215) (37,441) (39,979) 
Income before provision for income taxes40,882  52,269  62,152  59,222  
Provision for income taxes11,859  16,025  21,557  22,002  
Net income$29,023  $36,244  $40,595  $37,220  
Earnings per share:
Basic$0.52  $0.65  $0.73  $0.67  
Diluted$0.52  $0.65  $0.73  $0.66  
Shares used to compute earnings per share - Basic55,590  55,875  55,673  55,861  
Shares used to compute earnings per share - Diluted55,748  56,066  55,882  56,001  
  Three Months Ended Nine Months Ended
  September 30, September 30,
  2019 2018 2019 2018
Revenues:        
Service revenues $739,919
 $685,183
 $2,111,662
 $2,001,681
Product revenues 151,749
 157,998
 429,523
 440,418
Total revenues 891,668
 843,181
 2,541,185
 2,442,099
Cost of revenues: (exclusive of items shown separately below)        
Service revenues 496,005
 464,612
 1,439,717
 1,385,684
Product revenues 116,749
 116,073
 332,334
 325,010
Total cost of revenues 612,754
 580,685
 1,772,051
 1,710,694
Selling, general and administrative expenses 122,301
 121,219
 361,033
 362,302
Accretion of environmental liabilities 2,490
 2,450
 7,624
 7,328
Depreciation and amortization 73,756
 73,082
 223,328
 220,686
Income from operations 80,367

65,745

177,149
 141,089
Other (expense) income, net (427) (996) 1,992
 (449)
Loss on early extinguishment of debt (6,119) (2,469) (6,119) (2,469)
Interest expense, net of interest income of $1,152, $736, $2,981 and $2,086, respectively (19,702) (19,916) (59,681) (60,955)
Income before provision for income taxes 54,119

42,364

113,341
 77,216
Provision for income taxes 17,750
 11,275
 39,752
 28,011
Net income $36,369
 $31,089
 $73,589
 $49,205
Earnings per share:        
Basic $0.65
 $0.55
 $1.32
 $0.88
Diluted $0.65
 $0.55
 $1.31
 $0.87
Shares used to compute earnings per share - Basic 55,850
 56,059
 55,858
 56,222
Shares used to compute earnings per share - Diluted 56,165
 56,291
 56,109
 56,360

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

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CLEAN HARBORS, INC. AND SUBSIDIARIES

UNAUDITED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

(in thousands)
 Three Months EndedSix Months Ended
June 30,June 30,
 2020201920202019
Net income$29,023  $36,244  $40,595  $37,220  
Other comprehensive income (loss), net of tax:
Unrealized gains (losses) on available-for-sale securities296  (236) 232  (93) 
Reclassification adjustment for losses on available-for-sale securities included in net income—  332  —  332  
Unrealized loss on interest rate hedge(3,000) (9,014) (21,382) (14,031) 
Reclassification adjustment for losses on interest rate hedge included in net income2,130  397  3,228  755  
Foreign currency translation adjustments18,102  13,597  (23,856) 22,137  
Other comprehensive income (loss), net of tax17,528  5,076  (41,778) 9,100  
Comprehensive income (loss)$46,551  $41,320  $(1,183) $46,320  
  Three Months Ended Nine Months Ended
  September 30, September 30,
  2019 2018 2019 2018
Net income $36,369
 $31,089
 $73,589
 $49,205
Other comprehensive (loss) income:        
Unrealized gains (losses) on available-for-sale securities (net of tax of $2, $7, $60 and $95, respectively) 9
 (932) (84) (1,138)
Reclassification adjustment for losses on available-for-sale securities included in net income 
 
 332
 
Unrealized loss on interest rate hedge (3,865) (310) (17,896) (310)
Reclassification adjustment for losses on interest rate hedge included in net income 614
 
 1,369
 
Foreign currency translation adjustments (including a tax benefit of $5.6 million in the nine months ended September 30, 2018) (6,177) 9,832
 15,960
 (11,650)
Other comprehensive (loss) income (9,419) 8,590
 (319) (13,098)
Comprehensive income $26,950
 $39,679
 $73,270
 $36,107

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

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CLEAN HARBORS, INC. AND SUBSIDIARIES

UNAUDITED CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)
Nine Months EndedSix Months Ended
September 30,June 30,
2019 201820202019
Cash flows from operating activities:   Cash flows from operating activities:
Net income$73,589
 $49,205
Net income$40,595  $37,220  
Adjustments to reconcile net income to net cash from operating activities:   Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization223,328
 220,686
Depreciation and amortization147,027  149,572  
Allowance for doubtful accounts(745) 6,869
Allowance for doubtful accounts9,006  (2,233) 
Amortization of deferred financing costs and debt discount2,908
 2,841
Amortization of deferred financing costs and debt discount1,787  2,000  
Accretion of environmental liabilities7,624
 7,328
Accretion of environmental liabilities5,327  5,134  
Changes in environmental liability estimates(585) (301)Changes in environmental liability estimates5,607  (748) 
Deferred income taxes(973) 61
Deferred income taxes—  (1,636) 
Other (income) expense, net(1,992) 449
Other expense (income), netOther expense (income), net2,865  (2,419) 
Stock-based compensation14,664
 10,726
Stock-based compensation6,077  9,643  
Loss on early extinguishment of debt6,119
 2,469
Loss on sale of businessesLoss on sale of businesses3,258  —  
Environmental expenditures(12,804) (7,238)Environmental expenditures(6,104) (6,134) 
Changes in assets and liabilities, net of acquisitions   
Changes in assets and liabilities, net of acquisitions:Changes in assets and liabilities, net of acquisitions:
Accounts receivable and unbilled accounts receivable(31,408) (76,249)Accounts receivable and unbilled accounts receivable67,540  (13,284) 
Inventories and supplies(11,982) (20,534)Inventories and supplies(9,024) (4,129) 
Other current and non-current assets(5,425) (523)Other current and non-current assets(25,840) (10,706) 
Accounts payable3,035
 22,041
Accounts payable(82,134) (20,915) 
Other current and long-term liabilities19,322
 29,385
Other current and long-term liabilities7,499  (2,895) 
Net cash from operating activities284,675
 247,215
Net cash from operating activities173,486  138,470  
Cash flows used in investing activities:   Cash flows used in investing activities:
Additions to property, plant and equipment(174,533) (150,722)Additions to property, plant and equipment(125,721) (118,372) 
Proceeds from sale and disposal of fixed assets8,948
 6,111
Proceeds from sale and disposal of fixed assets3,101  7,389  
Acquisitions, net of cash acquired(29,479) (151,023)Acquisitions, net of cash acquired(8,877) (29,479) 
Proceeds from sale of businesses, net of transactional costsProceeds from sale of businesses, net of transactional costs7,753  —  
Additions to intangible assets including costs to obtain or renew permits(2,896) (3,500)Additions to intangible assets including costs to obtain or renew permits(1,242) (1,923) 
Proceeds from sale of available-for-sale securities41,612
 20,123
Proceeds from sale of available-for-sale securities28,851  26,518  
Purchases of available-for-sale securities(30,761) (20,471)Purchases of available-for-sale securities(45,550) (24,001) 
Net cash used in investing activities(187,109) (299,482)Net cash used in investing activities(141,685) (139,868) 
Cash flows used in financing activities:   
Cash flows from (used in) financing activities:Cash flows from (used in) financing activities:
Change in uncashed checks(3,516) (3,476)Change in uncashed checks(1,689) (3,514) 
Tax payments related to withholdings on vested restricted stock(5,505) (2,566)Tax payments related to withholdings on vested restricted stock(3,395) (4,980) 
Repurchases of common stock(16,390) (33,581)Repurchases of common stock(17,341) (11,272) 
Deferred financing costs paid(10,053) (3,938)
Premiums paid on early extinguishment of debt(2,689) (1,219)
Payments on finance lease(327) 
Payments on finance leasesPayments on finance leases(1,790) (259) 
Principal payments on debt(850,652) (403,884)Principal payments on debt(3,768) (3,768) 
Issuance of unsecured senior notes845,000
 
Issuance of secured senior notes, net of discount
 348,250
Borrowing from revolving credit facility
 50,000
Borrowing from revolving credit facility150,000  —  
Net cash used in financing activities(44,132) (50,414)
Payment on revolving credit facilityPayment on revolving credit facility(75,000) —  
Net cash from (used in) financing activitiesNet cash from (used in) financing activities47,017  (23,793) 
Effect of exchange rate change on cash2,292
 (1,221)Effect of exchange rate change on cash(3,443) 3,139  
Increase (decrease) in cash and cash equivalents55,726
 (103,902)Increase (decrease) in cash and cash equivalents75,375  (22,052) 
Cash and cash equivalents, beginning of period226,507
 319,399
Cash and cash equivalents, beginning of period371,991  226,507  
Cash and cash equivalents, end of period$282,233
 $215,497
Cash and cash equivalents, end of period$447,366  $204,455  
Supplemental information:   Supplemental information:
Cash payments for interest and income taxes:   Cash payments for interest and income taxes:
Interest paid$52,440
 $58,312
Interest paid$38,327  $39,369  
Income taxes paid23,797
 16,071
Income taxes paid1,478  12,697  
Cash paid for amounts included in the measurement of lease liabilities:   
Operating cash flows from operating leases42,105
 
Operating cash flows from finance lease979
 
Financing cash flows from finance lease327
 
Non-cash investing activities:   Non-cash investing activities:
Property, plant and equipment accrued14,875
 13,834
Property, plant and equipment accrued7,421  14,103  
ROU assets obtained in exchange for new operating lease liabilities8,008
 
ROU assets obtained in exchange for new finance lease liabilities31,011
 
ROU assets obtained in exchange for operating lease liabilitiesROU assets obtained in exchange for operating lease liabilities16,216  5,575  
ROU assets obtained in exchange for finance lease liabilitiesROU assets obtained in exchange for finance lease liabilities16,452  23,027  
The accompanying notes are an integral part of these unaudited consolidated financial statements.

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CLEAN HARBORS, INC. AND SUBSIDIARIES

UNAUDITED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY

(in thousands)

Common StockAccumulated
Other
Comprehensive Loss
Number
of
Shares
$0.01
Par
Value
Additional
Paid-in
Capital
Accumulated
Earnings
Total
Stockholders’
Equity
Balance at January 1, 202055,798  $558  $644,412  $(210,051) $834,894  $1,269,813  
Net income—  —  —  11,572  11,572  
Other comprehensive loss—  —  —  (59,306) —  (59,306) 
Stock-based compensation—  —  3,291  —  —  3,291  
Issuance of common stock for restricted share vesting, net of employee tax withholdings59   (2,225) —  —  (2,224) 
Repurchases of common stock(302) (3) (17,338) —  —  (17,341) 
Balance at March 31, 202055,555  556  628,140  (269,357) 846,466  1,205,805  
Net income—  —  —  —  29,023  29,023  
Other comprehensive income—  —  —  17,528  —  17,528  
Stock-based compensation—  —  2,786  —  —  2,786  
Issuance of common stock for restricted share vesting, net of employee tax withholdings58  —  (1,171) —  —  (1,171) 
Balance at June 30, 202055,613  $556  $629,755  $(251,829) $875,489  $1,253,971  

 Common Stock   
Accumulated
Other
Comprehensive Loss
    
 Number
of
Shares
 $ 0.01
Par
Value
 Additional
Paid-in
Capital
  Accumulated
Earnings
 Total
Stockholders’
Equity
Balance at January 1, 201955,847
 $558
 $655,415
 $(223,371) $737,154
 $1,169,756
Net income
 
 
 
 976
 976
Other comprehensive income
 
 
 4,024
 
 4,024
Stock-based compensation
 
 5,809
 
 
 5,809
Issuance of restricted shares, net of shares remitted and tax withholdings78
 1
 (2,277) 
 
 (2,276)
Repurchases of common stock(97) (1) (6,323) 
 
 (6,324)
Balance at March 31, 201955,828

558

652,624

(219,347)
738,130
 1,171,965
Net income
 
 
 
 36,244
 36,244
Other comprehensive income
 
 
 5,076
 
 5,076
Stock-based compensation
 
 3,834
 
 
 3,834
Issuance of restricted shares, net of shares remitted and tax withholdings105
 1
 (2,705) 
 
 (2,704)
Repurchases of common stock(74) 
 (4,948) 
 
 (4,948)
Balance at June 30, 201955,859

559

648,805

(214,271)
774,374
 1,209,467
Net income
 
 
 
 36,369
 36,369
Other comprehensive loss
 
 
 (9,419) 
 (9,419)
Stock-based compensation
 
 5,021
 
 
 5,021
Issuance of restricted shares, net of shares remitted and tax withholdings17
 
 (525) 
 
 (525)
Repurchases of common stock(68) (1) (5,117) 
 
 (5,118)
Balance at September 30, 201955,808
 $558
 $648,184
 $(223,690) $810,743
 $1,235,795


Common StockAccumulated
Other
Comprehensive Loss
Number
of
Shares
$0.01
Par
Value
Additional
Paid-in
Capital
Accumulated
Earnings
Total
Stockholders’
Equity
Balance at January 1, 201955,847  $558  $655,415  $(223,371) $737,154  $1,169,756  
Net income976  976  
Other comprehensive income4,024  —  4,024  
Stock-based compensation—  —  5,809  5,809  
Issuance of common stock for restricted share vesting, net of employee tax withholdings78   (2,277) (2,276) 
Repurchases of common stock(97) (1) (6,323) —  —  (6,324) 
Balance at March 31, 201955,828  558  652,624  (219,347) 738,130  1,171,965  
Net income—  —  —  —  36,244  36,244  
Other comprehensive income—  —  —  5,076  —  5,076  
Stock-based compensation—  —  3,834  —  —  3,834  
Issuance of common stock for restricted share vesting, net of employee tax withholdings105   (2,705) —  —  (2,704) 
Repurchases of common stock(74) —  (4,948) —  —  (4,948) 
Balance at June 30, 201955,859  $559  $648,805  $(214,271) $774,374  $1,209,467  
The accompanying notes are an integral part of these unaudited consolidated financial statements.

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CLEAN HARBORS, INC. AND SUBSIDIARIES

UNAUDITED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY (CONTINUED)

(in thousands)

 Common Stock   
Accumulated
Other
Comprehensive Loss
    
 Number
of
Shares
 $ 0.01
Par
Value
 Additional
Paid-in
Capital
  Accumulated
Earnings
 Total
Stockholders’
Equity
Balance at January 1, 201856,501
 $565
 $686,962
 $(172,407) $673,082
 $1,188,202
Cumulative effect of change in accounting principle
 
 
 
 (1,564) (1,564)
Net loss
 
 
 
 (12,631) (12,631)
Other comprehensive loss
 
 
 (16,746) 
 (16,746)
Stock-based compensation
 
 3,077
 
 
 3,077
Issuance of restricted shares, net of shares remitted and tax withholdings24
 
 (548) 
 
 (548)
Repurchases of common stock(280) (3) (14,261) 
 
 (14,264)
Balance at March 31, 201856,245

562

675,230

(189,153)
658,887
 1,145,526
Net income
 
 
 
 30,747
 30,747
Other comprehensive loss
 
 
 (4,942) 
 (4,942)
Stock-based compensation
 
 3,562
 
 
 3,562
Issuance of restricted shares, net of shares remitted and tax withholdings94
 1
 (1,628) 
 
 (1,627)
Repurchases of common stock(252) (2) (12,216) 
 
 (12,218)
Balance at June 30, 201856,087

561

664,948

(194,095)
689,634
 1,161,048
Net income
 
 
 
 31,089
 31,089
Other comprehensive income
 
 
 8,590
 
 8,590
Stock-based compensation
 
 4,087
 
 
 4,087
Issuance of restricted shares, net of shares remitted and tax withholdings15
 
 (391) 
 
 (391)
Repurchases of common stock(104) (1) (7,098) 
 
 (7,099)
Balance at September 30, 201855,998
 $560
 $661,546
 $(185,505) $720,723
 $1,197,324

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

CLEAN HARBORS, INC. AND SUBSIDIARIES

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

(1) BASIS OF PRESENTATION

The accompanying consolidated interim financial statements are unaudited and include the accounts of Clean Harbors, Inc. and its subsidiaries (collectively, “Clean Harbors,” the “Company” or "we") 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 and are necessary for a fair presentation of the financial position, results of operations and cash flows for the periods presented. Management has made estimates and assumptions affecting the amounts reported in the Company's consolidated interim financial statements and accompanying footnotes; actual results could differ from those estimates and judgments. 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 conjunction with the financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018.2019.
A novel strain of coronavirus ("COVID-19") was first identified in December 2019, and subsequently declared a global pandemic by the World Health Organization on March 11, 2020. As a result of the outbreak, many companies have experienced disruptions in their operations, workforce and markets served, including a significant reduction in the demand for petroleum-based products. The Company's businesses and operations began being adversely impacted by effects of COVID-19 in March of 2020 when circumstances surrounding and responses to the pandemic, including stay-at-home orders, began to materialize in North America. These disruptions had a significant impact on the Company's operating results during the three months ended June 30, 2020 and the Company expects that operations will continue to see an impact. The full extent of the ongoing COVID-19 outbreak and changes in demand for oil and the impact on the Company’s operations is uncertain. A prolonged disruption could have a material adverse impact on financial results and business operations of the Company.
In response to the COVID-19 outbreak, the Company has seen increased demand in emergency response services. In particular, the Company is addressing the safety of its customers and communities by providing contagion decontamination services. In conducting these services, employee safety is paramount and the Company has been able to provide appropriate personal protective equipment and support to those performing these services.

(2) SIGNIFICANT ACCOUNTING POLICIES
The Company's significant accounting policies are described in Note 2, "Significant Accounting Policies," and Note 3, "Revenues," in the Company's Annual Report on Form 10-K for the year ended December 31, 2018.2019. There have been no material changes in these policies or their application except for the changes described below.
RecentLandfill Accounting Pronouncements
Standards implemented
In February 2016,Landfill capacity - During the Financial Accounting Standards Board ("FASB") issued ASU 2016-02, Leases (Topic 842). The amendment increases transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. The Company adopted Topic 842 on January 1, 2019 using the modified retrospective methodfirst six months of adoption. Prior period amounts have not been adjusted and continue to be reported in accordance with the Company's historical accounting methodology pursuant to ASC 840, Leases. As permitted under the transition guidance, the Company elected to apply the package of three practical expedients for all existing leases which, among other things, allowed us to maintain the lease classification for all existing leases at the adoption date. The adoption of Topic 842 resulted in the recognition of right-of-use (“ROU”) assets of $185.5 million and total current and noncurrent lease liabilities of $188.5 million at adoption. Additionally, Topic 842 required new and expanded disclosures to enable users of financial statements to assess the amount, timing and uncertainty of cash flows arising from leases. The standard did not have a material impact on the consolidated statements of operations or cash flows.
Leases
The Company’s leases predominately relate to real estate and equipment such as vehicles and industrial equipment utilized in operations as well as rail cars utilized in connection with the Company’s transportation needs. Contracts are reviewed at inception to determine if the arrangement is a lease and, if so, whether it is an operating or finance lease. For all of its leases,2020, the Company has elected nottaken actions to separate lease and nonlease components, such as common area maintenance.
The Company generally enters into real estate leases with five to ten-year terms and non-real estate leases with two to seven-year terms. Inbegin the normal courseclosure of business, the Company also enters into short-term leases having terms of less than one-year. These leases are generally equipment leases entered into for short periods of time (e.g. daily, weekly or monthly), and done so to satisfy immediate and/or short-term operational needs of the business which can arise based upon the nature of particular services performed or seasonality factors. The Company has elected not to recognize ROU assets and lease liabilities for these short-term leases. Expense for all such short-term leases is disclosed as short-term lease cost as shown in Note 17, "Leases."
Operating and finance leases with terms exceeding one year are recognized as ROU assets and lease liabilities and measured based on the present value of the future lease payments over the lease term at commencement date. When applicable, the ROU asset includes any lease payments made at or before the commencement date and initial direct costs incurred and is reduced by lease incentives received under the lease agreement, if any.
Certain of the Company's real estate leases contain escalating future lease payments. Escalating lease payments that are based upon explicit amounts containedcommercial landfill sites. The planned closure will nominally reduce the Company's remaining highly probable airspace. See Note 9, "Closure and Post-Closure Liabilities," for additional information.
Government Grants
On March 27, 2020, the Coronavirus Aid, Relief and Economic Security Act ("CARES Act") was signed into law in response to the lease or an index (e.g., consumer price index) are included in its determination of future lease payments to determine the ROU asset and lease liability recognized at the commencement date. Any differences in the future lease

payments from initial recognition are not anticipated to be material and will be recorded as variable lease cost in the period incurred.  The variable lease cost will also include the Company’s portion of property tax, utilities and common area maintenance. A significant portionwidespread economic impact of the Company’s real estate lease agreements include renewal periods atCOVID-19 pandemic. On April 11, 2020, the Company’s option. TheCanadian federal government enacted the COVID-19 Emergency Response Act, No.2, which implemented the Canada Emergency Wage Subsidy ("CEWS"). During the quarter ended June 30, 2020, the Company includes these renewal periods in the lease term only when renewal is reasonably certain based upon facts and circumstances specificrecorded a benefit of $23.4 million as an offset to the leaserelated operating expenses in either cost of revenues or selling, general and known byadministrative expenses for the Company. The Company uses its incremental borrowing rate on collateralized debt based oneligible employee retention credit under the information available atCARES Act and the lease commencement date in determining the present value of future lease payments as the implicit rate is typically not readily determinable.subsidy under CEWS.

(3) REVENUES
Revenue Recognition
The Company generates services and product revenues through the following operating segments:its Environmental Services and Safety-Kleen.Safety-Kleen operating segments. The Company recognizes revenue when controlCompany's Environmental Services operating segment generally has the following three sources of the promised goods or services is transferred to the Company's customers, in an amount that reflects the consideration the Company expects to be entitled to in exchange for those goods or services. Product revenues are recognized when the products are delivered and control transfers to the customer.revenue:
Nature of Goods and Services
The majority of the Company’s contracts are for services, which are recognized based on time and materials incurred at contractually agreed-upon rates. The Company’s payment terms vary by the type and location of its customers and the products or services offered. The periods between invoicing and when payments are due are not significant. Any amounts billed to customers related to shipping and handling are classified as revenue and the Company's shipping and handling costs are included in costs of revenues. In the course of the Company's operations, it collects sales tax and other excise taxes from its customers and recognizes a current liability which is then relieved when the taxes are remitted to the appropriate governmental authorities. The Company excludes sales and other excise taxes that it collects from customers from its revenues.
Disaggregation of Revenue
The following table presents the Company’s third-party revenues disaggregated by revenue source (in thousands):
  For the Three Months Ended September 30, 2019
  Environmental Services Safety-Kleen Corporate Total
Primary Geographical Markets        
United States $450,638
 $313,979
 $(265) $764,352
Canada 99,484
 27,438
 394
 127,316
Total third-party revenues $550,122
 $341,417
 $129
 $891,668
         
Sources of Revenue (1)
        
Technical Services $292,506
 $
 $
 $292,506
Field and Emergency Response Services 95,546
 
 
 95,546
Industrial Services 131,855
 
 
 131,855
Oil, Gas and Lodging Services and Other 30,215
 
 129
 30,344
Safety-Kleen Environmental Services 
 217,439
 
 217,439
Safety-Kleen Oil (2)
 
 123,978
 
 123,978
Total third-party revenues $550,122
 $341,417
 $129
 $891,668

  For the Three Months Ended September 30, 2018
  Environmental Services Safety-Kleen Corporate Total
Primary Geographical Markets        
United States $410,792
 $307,497
 $(66) $718,223
Canada 98,021
 26,404
 533
 124,958
Total third-party revenues $508,813
 $333,901
 $467
 $843,181
         
Sources of Revenue (1)
��       
Technical Services $264,769
 $
 $
 $264,769
Field and Emergency Response Services 77,025
 
 
 77,025
Industrial Services 134,323
 
 
 134,323
Oil, Gas and Lodging Services and Other 32,696
 
 467
 33,163
Safety-Kleen Environmental Services 
 200,681
 
 200,681
Safety-Kleen Oil (2)
 
 133,220
 
 133,220
Total third-party revenues $508,813
 $333,901
 $467
 $843,181
  For the Nine Months Ended September 30, 2019
  Environmental Services Safety-Kleen Corporate Total
Primary Geographical Markets        
United States $1,270,556
 $917,240
 $531
 $2,188,327
Canada 279,558
 72,906
 394
 352,858
Total third-party revenues $1,550,114
 $990,146
 $925
 $2,541,185
         
Sources of Revenue (1)
        
Technical Services $820,333
 $
 $
 $820,333
Field and Emergency Response Services 253,894
 
 
 253,894
Industrial Services 383,964
 
 
 383,964
Oil, Gas and Lodging Services and Other 91,923
 
 925
 92,848
Safety-Kleen Environmental Services 
 640,956
 
 640,956
Safety-Kleen Oil (2)
 
 349,190
 
 349,190
Total third-party revenues $1,550,114
 $990,146
 $925
 $2,541,185
  For the Nine Months Ended September 30, 2018
  Environmental Services Safety-Kleen Corporate Total
Primary Geographical Markets        
United States $1,162,891
 $901,198
 $442
 $2,064,531
Canada 305,526
 71,336
 706
 377,568
Total third-party revenues $1,468,417
 $972,534
 $1,148
 $2,442,099
         
Sources of Revenue (1)
        
Technical Services $758,081
 $
 $
 $758,081
Field and Emergency Response Services 223,052
 
 
 223,052
Industrial Services 399,132
 
 
 399,132
Oil, Gas and Lodging Services and Other 88,152
 
 1,148
 89,300
Safety-Kleen Environmental Services 
 594,876
 
 594,876
Safety-Kleen Oil (2)
 
 377,658
 
 377,658
Total third-party revenues $1,468,417
 $972,534
 $1,148
 $2,442,099

______________________
(1)All revenue except oil and oil product sales within Safety-Kleen Oil and product sales within Safety-Kleen Environmental Services, which include various automotive related fluids, shop supplies and direct blended oil sales, are recognized over time. Safety-Kleen Oil and Safety-Kleen Environmental Services product sales are recognized at a point in time.
(2)Safety-Kleen Oil was formerly known as Kleen Performance Products.
Technical Services.ServicesTechnical Services revenues are generated from fees charged for waste material management and disposal services including onsite environmental management services, collection and transportation, packaging, recycling, treatment and disposal of waste. Revenue is primarily generated by short-term projects, most of which are governed by master service
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agreements that are long-term in nature. These master service agreements are typically entered into with the Company's larger customers and outline the pricing and legal frameworks for such arrangements. Services are provided based on purchase orders or agreements with the customer and include prices based upon units of volume of waste and transportation and other fees. Collection and transportation revenues are recognized over time, as the customer receives and consumes the benefits of the services as they are being performed and the Company has a right to payment for performance completed to date. The Company uses the input method to recognize revenue over time, based on time and materials incurred. Revenues for treatment and disposal of waste are recognized upon completion of treatment, final disposition in a landfill or incineration, or when the waste is shipped to a third party for processing and disposal. The Company periodically enters into bundled arrangements for the collection and transportation and disposal of waste. For such arrangements, transportation and disposal are considered distinct performance obligations and the Company allocates revenue to each based on theirthe relative standalone selling price (i.e., the estimated price that a customer would pay for the services on a standalone basis). Revenues from waste that is not yet completely processed and disposed and the related costs are deferred. The revenue is recognizeddeferred revenues and the deferred costs are expensedrecognized when the related services are completed. The period between collection and transportation and the final processing and disposal ranges depending on the location of the customer, but generally is measured in days.
Field and Emergency Response Services. ServicesField Services revenues are generated from cleanup services at customer sites, including municipalities and utilities, or other locations on a scheduled or emergency response basis. Services include confined space entry for tank cleaning, site decontamination, large remediation projects, demolition, spill cleanup on land and water, railcar cleaning, product recovery and transfer and vacuum services. Additional services include filtration and water treatment services. Response services for environmental, contamination or pandemic related emergencies include any scale from man-made disasters such as oil spills, to natural disasters such as hurricanes. TheseMore recently demand has increased for projects involving contagion disinfection, decontamination and disposal services in response to the COVID-19 pandemic. Field and emergency response services are provided based on purchase orders or agreements with customers and include prices generally based upon daily, hourly or job rates for equipment, materials and personnel. The Company recognizes revenue for these services over time, as the customer receives and consumes the benefits of the service as they are being performed and the Company has a right to payment for performance completed to date. The Company uses the input method to recognize revenue over time, based on time and materials incurred. The duration of such services can be over a number of hours, several days or even months for larger scale projects.
Industrial Services.Services and OtherIndustrial Services revenues are primarily generated from industrial and specialty services provided to refineries, mines, upgraders, chemical plants, pulp and paper mills, manufacturing facilities, power generation facilities and other industrial customers throughout North America. Services include in-plant cleaning and maintenance services, plant outage and turnaround services, decoking and pigging, chemical cleaning, high and ultra-high pressure water cleaning, pipeline inspection and coating services, large tank and surface impoundment cleaning, oilfield transport, daylighting, production services and directional boringupstream energy services, supportingsuch as exploration and drilling completionsfor industrial oil and production programs. These servicesgas customers. Services are provided based on purchase orders or agreements with the customer and include prices based upon daily, hourly or job rates for equipment, materials and personnel. The Company recognizes revenue for these services over time, as the customer receives and consumes the benefits of the services as they are being performed and the Company has a right to payment for performance completed to date. The Company uses the input method to recognize revenue over time, based on time and materials incurred.
Oil, Gas and Lodging Services and Other. Oil, Gas and Lodging Services and Other is primarily comprisedThe Company's Safety-Kleen operating segment generally has the following two sources of revenues generated from providing Oil and Gas Field Services that support upstream activities such as exploration and drilling for oil and gas companies and Lodging Services to customers in Western Canada. The Company recognizes Oil and Gas Field Services revenue over time, as the customer receives and consumes the benefits of the services as they are being performed and the Company has a right to payment for performance completed to date. The Company uses the input method to recognize revenue over time, based on time and materials incurred. Revenue for lodging accommodation services is recognized over time based on passage of time.revenue:
Safety-Kleen Environmental Services. ServicesSafety-Kleen Environmental Services revenues are generated from providing parts washer services, containerized waste handling and disposal services, oil collection services, vacuum services, direct sales of blended oil products and other complementary services and product sales through a network of branch locations.sales. Containerized waste services consist of profiling, collecting, transporting and recycling or disposing of a wide variety of waste. Other products and services include vacuum services, sale of complementary supply products including automotive fluids and shop supplies and other environmental services.

Revenues from parts Parts washer services include fees charged to customers for theircustomer use of our parts washer equipment, to cleancleaning and maintainmaintenance of the parts washer equipment and to removeremoval and replacereplacement of used cleaning fluids. Parts washer services are considered a single performance obligation due to the highly integrated and interdependent nature of the arrangement. Revenue from parts washer services is recognized over the service interval as the customer receives the benefit of the services. Collection and transportation revenues are recognized over time, as the customer receives and consumes the benefits of the services as they are being performed and the Company has a right to payment for performance completed to date. The Company uses the input method to recognize revenue over time, based on time and materials incurred. Product revenue is recognized upon the transfer of control whereby control transfers when the products are delivered to the customer.
Safety-Kleen Oil.Oil—Revenues from Safety-Kleen Oil revenues are generated from sales of high-quality base and blended lubricating oils to third-party distributors, government agencies, fleets, railroads and industrial customers. The business also sells recycled fuel oil to asphalt plants, industrial plants blenders,and pulp and paper companies,companies. The used oil is also processed into vacuum gas oil producers andwhich can be
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further re-refined into lubricant base oils or sold directly into the marine diesel oil producers.fuel market. Revenue for oil products is recognized at a point in time, upon the transfer of control. Control generally transfers when the products are delivered to the customer.
Disaggregation of Revenue
We disaggregate the Company's third party revenues by geographic location and source of revenue as we believe these categories depict how revenue and cash flows are affected by economic factors (in thousands):
For the Three Months Ended June 30, 2020
Environmental ServicesSafety-KleenCorporateTotal
Primary Geographical Markets
United States$403,451  $228,338  $(160) $631,629  
Canada60,903  17,252  216  78,371  
Total third-party revenues$464,354  $245,590  $56  $710,000  
Sources of Revenue (1)
Technical Services$241,929  $—  $—  $241,929  
Field and Emergency Response Services127,353  —  —  127,353  
Industrial Services and Other95,072  —  56  95,128  
Safety-Kleen Environmental Services—  194,872  —  194,872  
Safety-Kleen Oil—  50,718  —  50,718  
Total third-party revenues$464,354  $245,590  $56  $710,000  
For the Three Months Ended June 30, 2019
Environmental ServicesSafety-KleenCorporateTotal
Primary Geographical Markets
United States$431,749  $316,688  $202  $748,639  
Canada94,545  25,494  —  120,039  
Total third-party revenues$526,294  $342,182  $202  $868,678  
Sources of Revenue (1)
Technical Services$275,908  $—  $—  $275,908  
Field and Emergency Response Services86,722  —  —  86,722  
Industrial Services and Other (2)
163,664  —  202  163,866  
Safety-Kleen Environmental Services—  216,434  —  216,434  
Safety-Kleen Oil—  125,748  —  125,748  
Total third-party revenues$526,294  $342,182  $202  $868,678  

For the Six Months Ended June 30, 2020
Environmental ServicesSafety-KleenCorporateTotal
Primary Geographical Markets
United States$843,465  $534,871  $(462) $1,377,874  
Canada148,993  41,088  608  190,689  
Total third-party revenues$992,458  $575,959  $146  $1,568,563  
Sources of Revenue (1)
Technical Services$517,202  $—  $—  $517,202  
Field and Emergency Response Services233,265  —  —  233,265  
Industrial Services and Other241,991  —  146  242,137  
Safety-Kleen Environmental Services—  409,353  —  409,353  
Safety-Kleen Oil—  166,606  —  166,606  
Total third-party revenues$992,458  $575,959  $146  $1,568,563  
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For the Six Months Ended June 30, 2019
Environmental ServicesSafety-KleenCorporateTotal
Primary Geographical Markets
United States$819,918  $603,262  $796  $1,423,976  
Canada180,074  45,467  —  225,541  
Total third-party revenues$999,992  $648,729  $796  $1,649,517  
Sources of Revenue (1)
Technical Services$527,827  $—  $—  $527,827  
Field and Emergency Response Services158,348  —  —  158,348  
Industrial Services and Other (2)
313,817  —  796  314,613  
Safety-Kleen Environmental Services—  423,517  —  423,517  
Safety-Kleen Oil—  225,212  —  225,212  
Total third-party revenues$999,992  $648,729  $796  $1,649,517  
________________
(1) All revenue except oil and oil product sales within Safety-Kleen Oil and product sales within Safety-Kleen Environmental Services, which include various automotive related fluids, shop supplies and direct blended oil sales, are recognized over time. Safety-Kleen Oil and Safety-Kleen Environmental Services product sales are recognized at a point in time.
(2) Third-party revenues of $27,653 and $202 for the three months ended June 30, 2019, respectively, and third-party revenues of $61,708 and $796 for the six months ended June 30, 2019, respectively, previously reported as Oil, Gas and Lodging Services and Other, are now disclosed within Industrial Services and Other based on relative materiality to the business.
Contract Balances
(in thousands) September 30, 2019 December 31, 2018
Receivables $641,667
 $606,952
Contract assets (unbilled receivables) 58,842
 54,794
Contract liabilities (deferred revenue) 73,157
 61,843

(in thousands)June 30, 2020December 31, 2019
Receivables$572,373  $644,738  
Contract assets (unbilled receivables)44,761  56,326  
Contract liabilities (deferred revenue)61,902  73,370  
The timing of revenue recognition, billings and cash collections results in billed accounts receivable, unbilled receivables (contract assets) and customer advances and deposits or deferred revenue (contract liabilities) on the consolidated balance sheets.sheet. Generally, billing occurs subsequent to revenue recognition, as a right to payment is not just subject to passage of time, resulting in contract assets. Contract assets are generally classified as current. The Company sometimes receives advances or deposits from its customers before revenue is recognized, resulting in contract liabilities. These assets and liabilities are reported on the consolidated balance sheetssheet on a contract-by-contract basis at the end of each reporting period. The contract liability balances at the beginning of each period presented were generally fully recognized in the subsequent three-month period.
Variable Consideration
The nature of the Company's contracts give rise to certain types of variable consideration, including in limited cases volume discounts. Accordingly, management establishes a revenue allowance to cover the estimated amounts of revenue that may need to be credited to customers' accounts in future periods. The Company estimates the amount of variable consideration to include in the estimated transaction price based on historical experience, anticipated performance and its best judgment at the time and to the extent it is probable that a significant reversal of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is resolved.
Contract Costs
Contract costs include direct and incremental costs to obtain or fulfill a contract. The Company’s contract costs that are subject to capitalization are comprised of costs associated with parts washer services and costs associated with the treatment and disposal of waste. Parts washer costs include costs of solvent, commissions paid relating to revenue generated from parts washer services and transportation costs associated with transferring the product picked up from the services as it is returned to the Company’s facilities or a third-party site. Costs related to the treatment of waste include costs for waste receiving, drum movement and storage, waste consolidation and transportation between facilities. Deferred costs associated with parts washer services are amortized ratably over the average service interval, which ranges between seven and 14 weeks. Deferred costs related to treatment and disposal of waste are recognized when the corresponding waste is disposed of and are included in deferred costs within total current assets in the Company’s Consolidated Balance Sheets. The deferred contract cost balances at the beginning of each period presented were fully recognized in cost of revenue in the subsequent three-month period.
(4) BUSINESS COMBINATIONS
2020 Acquisition
On April 17, 2020, the Company acquired a privately-owned business for $8.9 million cash consideration. The acquired company expands the Safety-Kleen segment's oil re-refining operations to the northeast United States. In connection with this acquisition, a preliminary goodwill amount of $1.5 million was recognized.
2019 Acquisitions
On May 31, 2019, the Company acquired a privately-owned business whichfor $14.8 million cash consideration. The acquired company expands the environmental services and hazardous materials management services of the Company for $14.9 million. The acquired companyand is included in the Environmental Services segment. In connection with this acquisition, a preliminary goodwill amount of $7.5$7.4 million was recognized.

On March 1, 2019, the Company acquired certain assets of a privately-owned business for $10.4 million.million cash consideration. The acquired business complements the Safety-Kleen segment's core service offerings, such as used motor oil collection, parts washers, oil filter recycling and vacuum services. In connection with this acquisition, a preliminary goodwill amount of $5.2 million was recognized.
2018 Acquisitions
On August 31, 2018, the Company acquired a privately-owned business which expands the environmental services and waste oil capabilities of the Company for a $26.7 million purchase price, net of cash. The acquired company is included in the Safety-Kleen and Environmental Services segments. In connection with this acquisition, a goodwill amount of $12.3 million was recognized. The results of operations of this acquired business were not material in 2019.
On February 23, 2018, the Company completed the acquisition of the U.S. Industrial Cleaning Business of Veolia Environmental Services North America LLC (the "Veolia Business"). The acquisition provides significant scale and industrial services capabilities while increasing the size of the Company's existing U.S. Industrial Services business. The Company acquired the Veolia Business for a purchase price of $124.5 million. The amount of pre-tax (loss) income for the three and nine months ended September 30, 2018 was $(0.8) million and $2.5 million, respectively. The Veolia Business was integrated into the Environmental Services segment.
The Company finalized purchase accounting for the Veolia Business in the first quarter of 2019. The components and allocation of the purchase price for the Veolia Business consist of the following amounts (in thousands):
 Final Allocation
Accounts receivable, including unbilled receivables$39,558
Inventories and supplies1,126
Prepaid expenses and other current assets828
Property, plant and equipment72,243
Permits and other intangibles5,140
Current liabilities(18,372)
Closure and post-closure liabilities(354)
Total identifiable net assets100,169
Goodwill24,331
Total purchase price$124,500

The weighted average amortization period for the intangibles acquired is 8.2 years. The excess
9

Table of the total purchase price, which includes the aggregate cash consideration paid in excess of the fair value of the tangible net assets and intangible assets acquired, was recorded as goodwill. The goodwill recognized is attributable to the expected operating synergies and growth potential that the Company expects to realize from this acquisition. Goodwill generated from the acquisition is deductible for tax purposes.Contents

(5) INVENTORIES AND SUPPLIES
Inventories and supplies consisted of the following (in thousands):
 September 30, 2019 December 31, 2018
Oil and oil products$75,171
 $70,823
Supplies and drums112,220
 104,609
Solvent and solutions9,905
 10,657
Other13,531
 13,390
Total inventories and supplies$210,827
 $199,479

June 30, 2020December 31, 2019
Oil and oil related products$77,117  $75,408  
Supplies and drums118,086  115,128  
Solvent and solutions10,553  9,973  
Other14,052  14,235  
Total inventories and supplies$219,808  $214,744  
Supplies and drums consistedconsist primarily of drums and containers used in providing the Company's products and services, as well as critical spare parts to support the Company's incinerator and re-refinery operations.operations and personal protective equipment. Other inventories consisted primarily of parts washer components, cleaning fluids, absorbents and automotive fluids, such as windshield washer fluid and antifreeze.


(6) PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment consisted of the following (in thousands):
September 30, 2019 December 31, 2018June 30, 2020December 31, 2019
Land$134,809
 $123,734
Land$139,859  $131,023  
Asset retirement costs (non-landfill)15,349
 15,148
Asset retirement costs (non-landfill)16,102  15,924  
Landfill assets172,453
 154,918
Landfill assets182,287  182,276  
Buildings and improvements (1)
485,686
 440,188
Buildings and improvements (1)
499,701  499,159  
Camp equipment156,786
 152,998
Camp equipment153,980  158,277  
Vehicles786,575
 721,735
Equipment1,745,483
 1,697,490
Vehicles (2)
Vehicles (2)
809,790  785,056  
Equipment (3)
Equipment (3)
1,776,574  1,779,366  
Furniture and fixtures5,373
 5,453
Furniture and fixtures6,860  6,054  
Construction in progress37,290
 20,931
Construction in progress21,040  36,679  
3,539,804
 3,332,595
3,606,193  3,593,814  
Less - accumulated depreciation and amortization1,945,811
 1,770,617
Less - accumulated depreciation and amortization2,052,385  2,005,663  
Total property, plant and equipment, net$1,593,993
 $1,561,978
Total property, plant and equipment, net$1,553,808  $1,588,151  
________________
(1) September 30, 2019 balanceBalances inclusive of gross right-of-use ("ROU") assets classified as finance leases of $8.0 million and $31.0 million, respectively.
(2) Balances inclusive of gross ROU assets classified as finance leases.
Interest in the amount leases of $0.1$37.6 million and $0.3$2.4 million, respectively.
(3) June 30, 2020 balance inclusive of gross ROU assets classified as finance leases of $3.3 million.
Depreciation expense, inclusive of landfill and finance lease amortization, was capitalized to property, plant$63.7 million and equipment during$129.0 million for the three and ninesix months ended SeptemberJune 30, 2019, respectively. Interest in the amount of $0.1 million and $0.5 million was capitalized to property, plant and equipment during the three and nine months ended September 30, 2018,2020, respectively. Depreciation expense, inclusive of landfill and finance lease amortization, was $65.3$65.5 million and $196.7$131.4 million for the three and ninesix months ended SeptemberJune 30, 2019, respectively. Depreciation expense, inclusive

10

Table of landfill amortization, was $64.9 million and $194.7 million for the three and nine months ended September 30, 2018, respectively.Contents

(7) GOODWILL AND OTHER INTANGIBLE ASSETS
The changes in goodwill by segment for the ninesix months ended SeptemberJune 30, 20192020 were as follows (in thousands):
 Environmental Services Safety-Kleen Totals
Balance at January 1, 2019$207,019
 $307,170
 $514,189
Increase from current period acquisitions7,514
 5,225
 12,739
Measurement period adjustments from prior period acquisitions(2,675) (1,355) (4,030)
Foreign currency translation780
 903
 1,683
Balance at September 30, 2019$212,638
 $311,943
 $524,581

Environmental ServicesSafety-KleenTotals
Balance at January 1, 2020$212,531  $312,482  $525,013  
Increase from current period acquisition—  1,487  1,487  
Measurement period adjustments from prior period acquisitions23  —  23  
Decrease from disposition of businesses(674) —  (674) 
Foreign currency translation(1,263) (1,432) (2,695) 
Balance at June 30, 2020$210,617  $312,537  $523,154  
The Company assesses goodwill for impairment on an annual basis as of December 31 or at an interim date when events or changes in the business environment ("triggering events") would more likely than not reduce the fair value of a reporting unit below its carrying value. During the period ended June 30, 2020, the Company considered the effects of COVID-19 and evolving changes in demand and pricing for oil, but concluded that there were no triggering events requiring an impairment assessment. This conclusion was based on a qualitative analysis incorporating (i) the significant excess fair value that previously existed in each reporting unit and (ii) assessing the current and long-term performance of the Company given the expectation that these negative effects on the operations and cash flows of each reporting unit arising from COVID-19 related disruptions will be short-lived.
The Company continues to evaluate the impact of macroeconomic conditions including, but not limited to, the impact of the COVID-19 pandemic on the Company, customers and the greater economy as well as the impact on trends of oil demand. If these macroeconomic conditions are protracted or result in significant changes in demand for our products and services, a goodwill impairment might be identified and the amount might be material.
As of SeptemberJune 30, 20192020 and December 31, 2018,2019, the Company's total intangible assets consisted of the following (in thousands):
 September 30, 2019 December 31, 2018
 Cost Accumulated
Amortization
 Net Cost Accumulated
Amortization
 Net
Permits$182,667
 $84,899
 $97,768
 $177,583
 $79,358
 $98,225
Customer and supplier relationships400,498
 200,766
 199,732
 393,487
 179,824
 213,663
Other intangible assets37,932
 32,329
 5,603
 37,262
 29,743
 7,519
Total amortizable permits and other intangible assets621,097
 317,994
 303,103
 608,332
 288,925
 319,407
Trademarks and trade names122,760
 
 122,760
 122,468
 
 122,468
Total permits and other intangible assets$743,857
 $317,994
 $425,863
 $730,800
 $288,925
 $441,875

June 30, 2020December 31, 2019
CostAccumulated
Amortization
NetCostAccumulated
Amortization
Net
Permits$182,689  $90,360  $92,329  $184,235  $87,228  $97,007  
Customer and supplier relationships388,341  207,604  180,737  401,696  207,884  193,812  
Other intangible assets37,480  32,561  4,919  38,331  33,018  5,313  
Total amortizable permits and other intangible assets608,510  330,525  277,985  624,262  328,130  296,132  
Trademarks and trade names122,463  —  122,463  122,934  —  122,934  
Total permits and other intangible assets$730,973  $330,525  $400,448  $747,196  $328,130  $419,066  
Amortization expense of permits and other intangible assets was $8.4$8.8 million and $26.6$18.0 million in the three and ninesix months ended SeptemberJune 30, 2019,2020, respectively. Amortization expense of permits and other intangible assets was $8.1$8.7 million and $26.0$18.2 million in the three and ninesix months ended SeptemberJune 30, 2018,2019, respectively.

The expected amortization of the net carrying amount of finite-lived intangible assets at SeptemberJune 30, 20192020 was as follows (in thousands):
Years Ending December 31,Expected AmortizationYears Ending December 31,Expected Amortization
2019 (three months)$8,305
202031,942
2020 (six months)2020 (six months)$16,038  
202128,667
202129,858  
202228,406
202229,594  
202324,193
202325,391  
2024202423,919  
Thereafter181,590
Thereafter153,185  
$303,103
$277,985  

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Table of Contents

(8) ACCRUED EXPENSES
Accrued expenses consisted of the following (in thousands):
 September 30, 2019 December 31, 2018
Insurance$69,641
 $70,217
Interest10,605
 3,930
Compensation and benefits69,369
 77,881
Income, real estate, sales and other taxes40,306
 25,670
Other63,534
 55,707
 $253,455
 $233,405
June 30, 2020December 31, 2019
Accrued insurance$72,081  $74,376  
Accrued interest19,589  21,222  
Accrued compensation and benefits48,427  72,473  
Accrued income, real estate, sales and other taxes54,667  35,749  
Interest rate swap liability38,993  20,840  
Accrued other55,657  51,880  
$289,414  $276,540  

(9) CLOSURE AND POST-CLOSURE LIABILITIES
The changes to closure and post-closure liabilities (also referred to as “asset retirement obligations”) from January 1, 20192020 through SeptemberJune 30, 20192020 were as follows (in thousands):
 Landfill
Retirement
Liability
 Non-Landfill
Retirement
Liability
 Total
Balance at January 1, 2019$37,809
 $32,122
 $69,931
Liabilities assumed in acquisitions
 220
 220
New asset retirement obligations1,644
 
 1,644
Accretion2,113
 2,100
 4,213
Changes in estimates recorded to statement of operations
 142
 142
Changes in estimates recorded to balance sheet3,803
 
 3,803
Expenditures(4,310) (1,795) (6,105)
Currency translation and other142
 169
 311
Balance at September 30, 2019$41,201
 $32,958
 $74,159

All
Landfill
Retirement
Liability
Non-Landfill
Retirement
Liability
Total
Balance at January 1, 2020$39,401  $36,250  $75,651  
Liabilities assumed in acquisitions—  265  265  
New asset retirement obligations1,080  —  1,080  
Accretion1,521  1,655  3,176  
Changes in estimates recorded to statement of operations4,503  (36) 4,467  
Changes in estimates recorded to balance sheet129  (53) 76  
Expenditures(1,254) (491) (1,745) 
Currency translation and other(249) (80) (329) 
Balance at June 30, 2020$45,131  $37,510  $82,641  
During the first six months of 2020, the Company has taken actions to begin the closure of one of its commercial landfill sites resulting in a $4.5 million increase to the related closure and post-closure liability. The remaining 10 landfill facilities included in the above wereremain active as of SeptemberJune 30, 2019.2020. In the ninesix months ended SeptemberJune 30, 2019,2020, other than this charge, there were no significant charges (benefits) resulting from changes in estimates for closure and post-closure liabilities.
New asset retirement obligations incurred during the first ninesix months of 20192020 were discounted at the credit-adjusted risk-free rate of 6.02%5.60%.


(10) REMEDIAL LIABILITIES 
The changes to remedial liabilities from January 1, 20192020 through SeptemberJune 30, 20192020 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, 2019$1,838
 $65,315
 $53,864
 $121,017
Accretion66
 2,002
 1,343
 3,411
Changes in estimates recorded to statement of operations23
 (100) (650) (727)
Expenditures(44) (3,658) (2,997) (6,699)
Currency translation and other
 18
 249
 267
Balance at September 30, 2019$1,883
 $63,577
 $51,809
 $117,269

Remedial
Liabilities for
Landfill Sites
Remedial
Liabilities for
Inactive Sites
Remedial
Liabilities
(Including
Superfund) for
Non-Landfill
Operations
Total
Balance at January 1, 2020$1,851  $61,991  $50,331  $114,173  
Accretion44  1,265  842  2,151  
Changes in estimates recorded to statement of operations(14) (330) 1,484  1,140  
Expenditures(30) (2,171) (2,158) (4,359) 
Currency translation and other—  (923) 301  (622) 
Balance at June 30, 2020$1,851  $59,832  $50,800  $112,483  
In the ninesix months ended SeptemberJune 30, 2019,2020, the Company increased its remedial liabilities for a Superfund site by $1.8 million due to a change in the estimate of the related liabilities. This change in estimate was triggered by the receipt of updated regulatory approval requirements for remediation. Other than this charge, there were no significant charges (benefits) resulting from changes in estimates for remedial liabilities.

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Table of Contents

(11) FINANCING ARRANGEMENTS
The following table is a summary of the Company’s financing arrangements (in thousands):
Current Obligations:September 30, 2019 December 31, 2018
Secured senior term loans ("Term Loans")$7,535
 $7,535
    
Long-Term Obligations:   
Secured senior Term Loans due June 30, 2024$729,045
 $734,697
Unsecured senior notes, at 4.875%, due July 15, 2027 ("2027 Notes")545,000
 
Unsecured senior notes, at 5.125%, due July 15, 2029 ("2029 Notes")300,000
 
Unsecured senior notes, at 5.125%, due June 1, 2021 ("2021 Notes")
 845,000
Long-term obligations, at par$1,574,045
 $1,579,697
Unamortized debt issuance costs and premium, net(18,788) (14,676)
Long-term obligations, at carrying value$1,555,257
 $1,565,021
Current Obligations:June 30, 2020December 31, 2019
Secured senior term loans ("Term Loans")$7,535  $7,535  
Long-Term Obligations:
Secured senior Term Loans due June 30, 2024$723,394  $727,162  
Unsecured senior notes, at 4.875%, due July 15, 2027 ("2027 Notes")545,000  545,000  
Unsecured senior notes, at 5.125%, due July 15, 2029 ("2029 Notes")300,000  300,000  
Revolving credit facility75,000  —  
Long-term obligations, at par$1,643,394  $1,572,162  
Unamortized debt issuance costs and premium, net(16,523) (18,046) 
Long-term obligations, at carrying value$1,626,871  $1,554,116  
Financing Activities
On July 2, 2019, the Company completed a private placementAs of $545.0 million aggregate principal amount of 2027 Notes and $300.0 million aggregate principal amount of 2029 Notes (collectively, the "New Notes").
The 2027 Notes will mature on July 15, 2027, and the 2029 Notes will mature on July 15, 2029. Interest payments on each series of the New Notes will be paid semiannually on January 15 and July 15, commencing on January 15, 2020.
The Company also maintains a $400.0 million revolving credit facility under which the Company had 0 outstanding loan balance as of SeptemberJune 30, 20192020 and December 31, 2018. At September 30, 2019, approximately $231.1 million was available to borrow and outstanding letters of credit were $147.2 million. At December 31, 2018, $235.4 million was available to borrow and outstanding letters of credit were $130.1 million.
The Company may redeem all or any portion of the 2027 Notes prior to July 15, 2022 or the 2029 Notes prior to July 15, 2024 at a redemption price equal to 100% of the principal amount redeemed plus a make whole premium as of the date of redemption including accrued and unpaid interest, if any, up to the date of redemption. Additionally, prior to July 15, 2022 for the 2027 Notes and July 15, 2024 for the 2029 Notes, the Company may use cash proceeds of one or more equity offerings to redeem up to 35% in aggregate principal of the 2027 Notes or the 2029 Notes at a redemption price equal to 104.875% or 105.125%, respectively, plus accrued and unpaid interest thereon, if any, up to the date of redemption.
After the dates in the preceding paragraph, the Company may redeem all or any portion of the New Notes which remain outstanding at any time upon proper notice at the following redemption prices if redeemed during the twelve-month period commencing on July 15 of the years set forth below plus accrued and unpaid interest, if any, up to the date of redemption:

2027 Notes
Year Percentage
2022 102.438%
2023 101.219%
2024 and thereafter 100.000%
2029 Notes
Year Percentage
2024 102.563%
2025 101.281%
2026 and thereafter 100.000%

The New Notes and the related indenture contain various customary non-financial covenants and are guaranteed by substantially all of the Company’s current and future domestic subsidiaries.
Concurrently with the closing of the New Notes on July 2, 2019, the Company purchased, using a portion of the net proceeds from the sale of the New Notes, an aggregate principal amount of $701.0 million of the 2021 Notes. The total amount paid in purchasing the 2021 Notes was $706.2 million including $3.1 million of accrued interest. On July 17, 2019, the Company redeemed the remaining $144.0 million outstanding 2021 Notes, including $0.9 million of accrued interest, using the remaining net proceeds from the sale of the New Notes and available cash. In connection with this early repurchase and redemption of the 2021 Notes, the Company recorded a loss on early extinguishment of debt of $6.1 million during the three months ended September 30, 2019. With the repurchase and redemption of the 2021 Notes, none of the Company’s outstanding debt is registered under the Securities Act of 1933, as amended.
As of September 30, 2019 and December 31, 2018, the estimated fair value of the Company’s outstanding long-term obligations, including the current portion, was $1.7 billion and $1.6 billion.billion, respectively. The Company’s estimates of fair value of its long-term obligations, including the current portion, are based on quoted market prices or other available market data which are considered Level 2 measures according to the fair value hierarchy. Level 2 utilizes quoted market prices in markets that are not active, broker or dealer quotation,quotations or alternative pricing sources with reasonable levels of price transparency for similar assets and liabilities.
The Company maintains a $400.0 million revolving credit facility expiring November 1, 2021. On March 31, 2020, the Company drew down $150.0 million on the revolving credit facility in response to the uncertainty surrounding the COVID-19 global pandemic. The Company repaid $75.0 million of that borrowing on June 29, 2020, and the remaining $75.0 million was repaid on July 28, 2020. As of June 30, 2020, the Company had $135.3 million available to borrow under the revolving credit facility and outstanding letters of credit were $142.5 million. At December 31, 2019, $229.2 million was available to borrow and outstanding letters of credit were $146.9 million.
Cash Flow Hedges
The Company’s strategy to hedge against fluctuations in variable interest rates involves entering into interest rate derivative agreements. Although the interest rate on all $736.6 million aggregate principal amount ofthe Term Loans which were outstanding on September 30, 2019 is variable, under the related Term Loan Agreement, the Company has effectively fixed the interest rate on $350.0 million aggregate principal amount of the Term Loans outstanding by entering into interest rate swap agreements in 2018 with a notional amount of $350.0 million. Under the terms of the interest rate swap agreements, the Company receives interest based on the one-month LIBOR index and pays interest at a weighted average annual interest rate of approximately 2.92%. When combined with the 1.75% interest rate margin for Eurocurrency borrowings, the, resulting in an effective annual interest rate on such $350.0 million aggregate principal amount of Term Loans is therefore approximately 4.67%. 
The Company recognizes derivative instruments as either assets or liabilities on the balance sheet at fair value. No ineffectiveness has been identified on these swaps and, therefore, all unrealized changes in fair value are recorded in accumulated other comprehensive loss. Amounts are reclassified from accumulated other comprehensive loss into interest expense on the statement of operations in the same period or periods during which the hedged transaction affects earnings.
As of SeptemberJune 30, 20192020 and December 31, 2018,2019, the Company has recorded a derivativean interest rate swap liability with a fair value of $25.3$39.0 million and $8.8$20.8 million, respectively, within accrued expenses in connection with these cash flow hedges.
The fair value of the interest rate swaps is calculated using discounted cash flow valuation methodologies based upon the one-month LIBOR yield curves that are observable at commonly quoted intervals for the full term of the interest rate swaps and as such is considered a Level 2 measure according to the fair value hierarchyhierarchy.

(12) INCOME TAXES 
The Company records a tax provision or benefit on an interim basis using an estimated annual effective tax rate. This rate is applied to the current period ordinary income or loss to determine the income tax provision or benefit allocated to the interim period. Losses from jurisdictions for which no benefit can be recognized and the income tax effects of unusual or infrequent items

are excluded from the estimated annual effective tax rate and are recognized in the impacted interim period. The estimated annual effective tax rate may be significantly impacted by projected earnings mix by tax jurisdiction. Adjustments to the estimated annual effective income tax rate are recognized in the period when such estimates are revised.
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Table of Contents

The Company’s effective tax rate for the three and ninesix months ended SeptemberJune 30, 20192020 was 32.8%29.0% and 35.1%34.7%, respectively, compared to 26.6%30.7% and 36.3%37.2%, respectively, for the comparable periods in 2018.2019.
As of SeptemberJune 30, 20192020 and December 31, 2018,2019, the Company had recorded $4.6$6.1 million and $3.2$6.4 million, respectively, of liabilities for unrecognized tax benefits and $1.2$1.9 million and $0.8$1.7 million, respectively, of interest, respectively.interest.
The Company'sInternal Revenue Service ("IRS") completed its examination of the Company’s tax years 2014-2016 are currently underand submitted its audit byreport to the Internal Revenue Service (“IRS”Joint Committee on Taxation ("Joint Committee"). WhileIn July 2020, we received notification from the examinationIRS that the Joint Committee has recently commencedcompleted its review and ultimate outcomes are unknown,taken no exception. No material adjustments were made to the previously filed returns as a result of this process.
The Company believes the examination will not result in material adjustments to previously filed returns.
Due to expiring statute of limitation periods, the Company believes that total unrecognized tax benefits will decrease by
$1.0 million within the next 12 months.months uncertain tax positions may be resolved and statutes of limitations will expire which could result in a decrease in the gross amount of unrecognized tax benefits of $1.0 million.

(13) EARNINGS PER SHARE  
The following are computations of basic and diluted earnings per share (in thousands, except per share amounts):
 Three Months Ended Nine Months Ended
 September 30, September 30,
 2019 2018 2019 2018
Numerator for basic and diluted earnings per share:       
Net income$36,369
 $31,089
 $73,589
 $49,205
        
Denominator:       
Basic shares outstanding55,850
 56,059
 55,858
 56,222
Dilutive effect of outstanding stock awards315
 232
 251
 138
Dilutive shares outstanding56,165

56,291

56,109
 56,360
        
Basic income per share:$0.65
 $0.55
 $1.32
 $0.88
  
  
  
  
Diluted income per share:$0.65
 $0.55
 $1.31
 $0.87

Three Months EndedSix Months Ended
 June 30,June 30,
 2020201920202019
Numerator for basic and diluted earnings per share:
Net income$29,023  $36,244  $40,595  $37,220  
Denominator:
Basic shares outstanding55,590  55,875  55,673  55,861  
Dilutive effect of outstanding stock awards158  191  209  140  
Dilutive shares outstanding55,748  56,066  55,882  56,001  
Basic earnings per share:$0.52  $0.65  $0.73  $0.67  
    
Diluted earnings per share:$0.52  $0.65  $0.73  $0.66  
For the three months ended SeptemberJune 30, 2020 and June 30, 2019, all then outstanding performance awards and September 30, 2018, the dilutive effect of outstandingrestricted stock awards excludes 147,075were included in the calculation of diluted earnings per share except for 96,018 and 304,644,75,759, respectively, of performance stock awards for which the performance criteria were not achievedattained at the time and 3,567149,460 and 6,565,4,623, respectively, of restricted stock awards and performance awards which were antidilutive.excluded as their inclusion would have an antidilutive effect.
For the ninesix months ended SeptemberJune 30, 2020 and June 30, 2019, all then outstanding performance awards and September 30, 2018, the dilutive effect of outstandingrestricted stock awards excludes 147,075were included in the calculation of diluted earnings per share except for 96,018 and 304,644,75,759, respectively, of performance stock awards for which the performance criteria were not achievedattained at the time and 14,22314,716 and 91,743,78,892, respectively, of restricted stock awards which were antidilutive.excluded as their inclusion would have an antidilutive effect.


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Table of Contents

(14) ACCUMULATED OTHER COMPREHENSIVE LOSS
The changes in accumulated other comprehensive loss by component and related tax effects for the ninesix months ended SeptemberJune 30, 20192020 were as follows (in thousands): 
 Foreign Currency Translation Unrealized (Losses) Gains on Available-For-Sale Securities Unrealized Losses on Interest Rate Hedge Unfunded Pension Liability Total
Balance at January 1, 2019$(212,925) $(69) $(8,773) $(1,604) $(223,371)
Other comprehensive income (loss) before tax effects15,960
 (24) (17,896) 
 (1,960)
Tax impact related to items in other comprehensive income (loss)
 (60) 
 
 (60)
Amounts reclassified out of accumulated other comprehensive loss
 332
 1,369
 
 1,701
Other comprehensive income (loss)15,960
 248
 (16,527) 
 (319)
Balance at September 30, 2019$(196,965) $179
 $(25,300) $(1,604) $(223,690)

Foreign Currency TranslationUnrealized Gains (Losses) on Available-For-Sale SecuritiesUnrealized Loss on Interest Rate HedgeUnfunded Pension LiabilityTotal
Balance at January 1, 2020$(187,795) $143  $(20,839) $(1,560) $(210,051) 
Other comprehensive (loss) income before reclassifications and tax impacts(25,205) 294  (21,382) —  (46,293) 
Amounts reclassified out of accumulated other comprehensive loss—  —  3,228  —  3,228  
Tax gain (loss)1,349  (62) —  —  1,287  
Other comprehensive (loss) income(23,856) 232  (18,154) —  (41,778) 
Balance at June 30, 2020$(211,651) $375  $(38,993) $(1,560) $(251,829) 
The amountsamount reclassified out of accumulated other comprehensive loss into the consolidated statement of operations, with presentation location, during the three and ninesix months ended SeptemberJune 30, 2019 were2020 was as follows (in thousands):
 Other Comprehensive Income (Loss) Components For the Three Months Ended September 30, 2019 For the Nine Months Ended September 30, 2019 Location
 
 Unrealized loss on interest rate hedge $(614) $(1,369) Interest expense, net of interest income
 Unrealized loss on available-for-sale securities 
 (332) Other (expense) income, net
Other Comprehensive Income (Loss) ComponentsFor the Three Months Ended June 30, 2020For the Six Months Ended June 30, 2020Location
Unrealized loss on interest rate hedge$(2,130) $(3,228) Interest expense, net of interest income

There were 0 reclassifications out of accumulated other comprehensive loss during the three and nine months ended September 30, 2018.
(15) STOCK-BASED COMPENSATION
On June 3, 2020, our shareholders approved the Clean Harbor's Inc. 2020 Stock Incentive Plan (the "2020 Plan"), which became effective on that date. The 2020 Plan provides for future awards of up to 2.5 million shares of the Company’s common stock (subject to certain anti-dilution adjustments) in the form of stock options, stock appreciation rights, restricted stock, restricted stock units and other stock-based awards. The 2020 Plan is administered by the Compensation Committee of the Company’s Board of Directors. The Company's previous stock incentive plan (the "2010 Plan") expired on May 10, 2020. In connection with the adoption of the 2020 Plan, no further awards will be made under the 2010 Plan.
Total stock-based compensation cost charged to selling, general and administrative expenses for the three and ninesix months ended SeptemberJune 30, 2019 2020was $5.0$2.8 million and $14.7$6.1 million, respectively. Total stock-based compensation cost charged to selling, general and administrative expenses for the three and ninesix months ended SeptemberJune 30, 20182019 was $4.1$3.8 million and $10.7$9.6 million, respectively. The total income tax benefit recognized in the consolidated statements of operations from stock-based compensation expense was $1.0 million and $2.8 million for the three and ninesix months ended SeptemberJune 30, 2019,2020 was $0.4 million and $1.2 million, respectively. The total income tax benefit recognized in the consolidated statements of operations from stock-based compensation was $0.8 million and $2.0 millionexpense for the three and ninesix months ended SeptemberJune 30, 2018,2019 was $0.7 million and $1.8 million, respectively.
Restricted Stock Awards
The following information relates to restricted stock awards that have been granted to employees and directors under the Company's equity incentive plan adopted in 2010 (the "2010 Plan"). The restricted stock awards are not transferable until vested and the restrictions generally lapse upon the achievement of continued employment over a three-to-five-year period or service as a director until the following annual meeting of shareholders. The fair value of each restricted stock grant is based on the closing price of the Company's common stock on the date of grant and is amortized to expense over its vesting period.
The following table summarizes information about restricted stock awards for the ninesix months ended SeptemberJune 30, 2019:
Restricted StockNumber of Shares 
Weighted Average
Grant-Date
Fair Value
Balance at January 1, 2019657,240
 $54.65
Granted168,261
 68.39
Vested(230,214) 53.97
Forfeited(53,458) 55.27
Balance at September 30, 2019541,829
 59.14

2020:

Restricted StockNumber of SharesWeighted Average
Grant-Date
Fair Value
Balance at January 1, 2020522,597  $59.57  
Granted52,078  59.07  
Vested(147,197) 57.33  
Forfeited(31,640) 58.64  
Balance at June 30, 2020395,838  60.42  
As of SeptemberJune 30, 2019,2020, there was $24.0$16.5 million of total unrecognized compensation cost arising from restricted stock awards under the Company's 2010 Plan.awards. This cost is expected to be recognized over a weighted average period of 2.752.3 years. The total fair value of restricted stock vested during the three and ninesix months ended SeptemberJune 30, 20192020 was $4.2$4.4 million and $15.3$9.7 million, respectively. The total fair value of restricted stock vested during the three and ninesix months ended SeptemberJune 30, 20182019 was $1.1$7.9 million and $9.4$11.1 million, respectively.
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Performance Stock Awards

The following information relates to performance stock awards that have been granted to employees under the Company's 2010 Plan. Performance stock awards are subject to performance criteria established by the compensation committeeCompensation Committee of the Company's boardBoard of directorsDirectors prior to or at the date of grant. The vesting of the performance stock awards is based on achieving such targets typically based on revenue, Adjusted EBITDA margin, Adjusted Free Cash Flow and Total Recordable Incident Rate. In addition, performance stock awards include continued service conditions. The fair value of each performance stock award is based on the closing price of the Company's common stock on the date of grant and is amortized to expense over the service period if achievement of performance measures is considered probable.

The following table summarizes information about performance stock awards for the ninesix months ended SeptemberJune 30, 2019:2020:
Performance StockNumber of SharesWeighted Average
Grant-Date
Fair Value
Balance at January 1, 2020204,553  $64.78  
Granted—  —  
Vested(23,222) 55.75  
Forfeited(11,976) 65.71  
Balance at June 30, 2020169,355  65.95  
Performance StockNumber of Shares 
Weighted Average
Grant-Date
Fair Value
Balance at January 1, 2019213,490
 $55.71
Granted121,075
 70.53
Vested(51,996) 55.77
Forfeited(27,308) 56.53
Balance at September 30, 2019255,261
 62.64


As of SeptemberJune 30, 2019,2020, there was $4.5$1.6 million of total unrecognized compensation cost arising from unvested performance stock awards deemed probable of vesting under the Company's 2010 Plan.vesting. NaN performance awards vested during the three months ended SeptemberJune 30, 20192020 and SeptemberJune 30, 2018.2019. The total fair value of performance awards vested during the ninesix months ended SeptemberJune 30, 2020 and June 30, 2019 was $1.3 million and September 30, 2018 was $2.9 million, and $0.5 million, respectively.

Common Stock Repurchases
The Company's board of directors has authorized the repurchase of up to $600.0 million of the Company's common stock. During the three and nine months ended September 30, 2019, the Company repurchased and retired a total of approximately 0.1 million and 0.2 million shares, respectively, of the Company's common stock for total costs of approximately $5.1 million and $16.4 million, respectively. During the three and nine months ended September 30, 2018, the Company repurchased and retired a total of approximately 0.1 million and 0.6 million shares, respectively, of the Company's common stock for total costs of approximately $7.1 million and $33.6 million, respectively. Through September 30, 2019, the Company has repurchased and retired a total of approximately 5.8 million shares of its common stock for approximately $310.3 million under this program. As of September 30, 2019, an additional $289.7 million remained available for repurchase of shares under this program.
(16) COMMITMENTS AND CONTINGENCIES
Legal and Administrative Proceedings
The Company and its subsidiaries are subject to legal proceedings and claims arising in the ordinary course of business. Actions filed against the Company arise from commercial and employment-related claims including alleged class actions related to sales practices and wage and hour claims. The plaintiffs in these actions may be seeking damages or injunctive relief or both. These actions are in various jurisdictions and stages of proceedings, and some are covered in part by insurance. In addition, the Company’s waste management services operations 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 alleged violations of existing permits and licenses or alleged responsibility 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 the prior owners of certain of the Company’s facilities shipped wastes.

waste.
At SeptemberJune 30, 20192020 and December 31, 2018,2019, the Company had recorded reserves of $24.0$23.5 million and $25.4$26.0 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 September 30, 2019 and December 31, 2018, the Company also believed thatIn management's opinion, it wasis not reasonably possible that the amountpotential liability beyond what has been recorded, if any, that may result from these actions, either individually or collectively, will have a material effect on our financial position, results of these potential liabilities could be as much as $1.8 million more.operations or cash flows. The Company periodically adjusts the aggregate amount of these reserves when 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 SeptemberJune 30, 20192020 and December 31, 2018,2019, the $24.0$23.5 million and $25.4$26.0 million, respectively, of reserves consisted of (i) $18.1$17.7 million and $17.9$18.4 million, respectively, related to pending legal or administrative proceedings, including Superfund liabilities, which were included in remedial liabilities on the consolidated balance sheets, and (ii) $5.9$5.8 million and $7.5$7.6 million, respectively, primarily related to federal, state and provincial enforcement actions, which were included in accrued expenses on the consolidated balance sheets.
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As of SeptemberJune 30, 2019,2020, the principal legal and administrative proceedings in which the Company was involved, or which had been terminated during 2019,2020, 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 2 permits to dump organic liquids into lagoons on the property to a company unrelated to the Mercier Subsidiary. In 1999, Ville Mercier and 3 neighboring municipalities filed separate legal proceedings against the Mercier Subsidiary and the Government of Quebec. In 2012, the municipalities amended their existing statement of claim to seek $2.9 million (CAD) in general damages and $10.0 million (CAD) in punitive damages, plus interest and costs, as well as injunctive relief. Both the Government of Quebec and the Company have filed summary judgment motions against the municipalities. The parties are attempting to negotiate a resolution and hearings on the motions have been delayed. In September 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 Company has accrued for costs expected to be incurred relative to the resolution of this matter and believes this matter will not have future material effect on its financial position, results of operations or cash flows.
Safety-Kleen Legal Proceedings. On December 28, 2012, the Company acquired Safety-Kleen, Inc. ("Safety-Kleen") and thereby became subject to the legal proceedings in which Safety-Kleen was a party on that date. In addition to certain Superfund proceedings in which Safety-Kleen has been named as a potentially responsible party as described below under “Superfund Proceedings,” the principal such legal proceedings involving Safety-Kleen which were outstanding as of SeptemberJune 30, 20192020 were as follows:
Product Liability Cases. Safety-Kleen has been named as a defendant in various lawsuits that are currently pending in various courts and jurisdictions throughout the United States, including approximately 5967 proceedings (excluding cases which have been settled but not formally dismissed) as of SeptemberJune 30, 2019,2020, wherein persons claim personal injury resulting from the use of Safety-Kleen's parts cleaningwasher equipment or cleaning products. These proceedings typically involve allegations that the solvent used in Safety-Kleen's parts cleaningwasher equipment contains contaminants and/or that Safety-Kleen's recycling process does not effectively remove the contaminants that become entrained in the solvent during their use. In addition, certain claimants assert that Safety-Kleen failed to adequately warn the product user of potential risks, including a historic failure to warn that solvent contains trace amounts of toxic or hazardous substances such as benzene.
Safety-KleenThe Company maintains insurance that it believes will provide coverage for these product liability claims (over amounts accrued for self-insured retentions and deductibles in certain limited cases), except for punitive damages to the extent not insurable under state law or excluded from insurance coverage. Safety-KleenThe Company also believes that these claims lack merit and has historically vigorously defended, and intends to continue to vigorously defend, itself and the safety of its products against all these claims. Such matters are subject to many uncertainties and outcomes are not predictable with assurance. Consequently, Safety-Kleenthe Company is unable to ascertain the ultimate aggregate amount of monetary liability or financial impact with respect to these matters as of SeptemberJune 30, 2019.2020. From January 1, 20192020 to SeptemberJune 30, 2019, 212020, 3 product liability claims were settled or dismissed. Due to the nature of these claims and the related insurance, the Company did not incur any expense as Safety-Kleen's insurance provided coverage in full for all such claims. Safety-Kleen may be named in similar, additional lawsuits in the future, including claims for which insurance coverage may not be available.

Superfund Proceedings
The Company has been notified that either the Company (which, since December 28, 2012, includes Safety-Kleen) 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 129130 sites which are subject to or are proposed to become subject to proceedings under federal or state Superfund laws. Of the 129130 sites, 5 (including the BR Facility described below) involve facilities that are now owned or leased by the Company and 124125 involve third-party sites to which either the Company or the prior owners of certain of the Company’s facilities shipped wastes. Of the 124125 third-party sites, 31 are now settled, 1678 are currently requiring expenditures on remediation and 7716 are not currently requiring expenditures on remediation.
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 indemnification obligations, 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
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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 believes its potential liability could exceed $100,000 at 10 of the 124125 third-party sites.
BR Facility. The Company acquired in 2002 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 U.S. Environmental Protection Agency ("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 storm water 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. In 2018, the Company completed performing corrective actions at the BR Facility under an order issued by the Louisiana Department of Environmental Quality and has also completed conducting the remedial investigation and feasibility study for Devil's Swamp 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 with issuance of a Record of Decision.
Third-Party Sites. Of the 124125 third-party sites at which the Company has been notified it is a PRP or potential PRP or may have indemnification obligations, Clean Harbors has an indemnification agreement at 11 of these sites with ChemWaste, a former subsidiary of Waste Management, Inc., and at 6 additional of these third-party sites, Safety-Kleen has a similar indemnification agreement with McKesson Corporation. These agreements indemnify the Company (which now includes Safety-Kleen) with respect to any liability at the 17 sites for waste disposed prior to the Company's (or Safety-Kleen's) acquisition of the former subsidiaries of Waste Management and McKesson which had shipped wastes to those sites. Accordingly, Waste Management or McKesson are paying all costs of defending those subsidiaries in those 17 cases, including legal fees and settlement costs. However, there can be no guarantee that the Company's ultimate liabilities for those 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. Except for the indemnification agreements which the Company holds from ChemWaste, McKesson and two other entities, the Company does not have an indemnity agreement with respect to any of the 124125 third-party sites discussed above.
Federal, State and Provincial 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 SeptemberJune 30, 20192020 and December 31, 2018,2019, there were 1011 and 12 proceedings, respectively, for which the Company reasonably believes that the sanctions could equal or exceed $100,000. The Company believes that the fines or other penalties in these or any of the other regulatory proceedings will, individually or in the aggregate, not have a material effect on its financial condition, results of operations or cash flows.
(17) LEASES
As of September 30, 2019, the Company’s leases were all operating leases except for 2 leases associated with the Company’s corporate headquarters, which were amended during 2019, resulting in the classification as finance leases.

The Company’s lease expense was as follows (in thousands):
 For the Three Months Ended September 30, 2019 For the Nine Months Ended September 30, 2019
Operating lease cost$14,056
 $41,406
Finance lease cost:   
Amortization of ROU asset245
 735
Interest on lease liability367
 979
Total finance lease cost612

1,714
Short-term lease cost22,258
 60,295
Variable lease cost2,139
 6,372
Total lease cost$39,065

$109,787

Other information related to leases was as follows (in thousands, except lease term and discount rate):
Supplemental Lease Balance Sheet Information:September 30, 2019
ROU assets: 
Operating leases$164,302
Finance leases (included in property, plant and equipment, net)30,276
Current portion of lease liabilities: 
Operating leases41,364
Finance leases (included in accrued expenses)440
Long-term portion of lease liabilities: 
Operating leases122,668
Finance leases (included in deferred taxes, unrecognized tax benefits and other long-term liabilities)32,228

Weighted Average Remaining Lease Term (years)September 30, 2019
Operating leases5.1
Finance leases22.8
Weighted Average Discount Rate
Operating leases5.33%
Finance leases4.99%

At September 30, 2019, the Company's future lease payments under non-cancelable leases that have lease terms in excess of one year were as follows (in thousands):
Years Ending December 31,
Operating
Leases
 
Finance
Leases
2019 (three months)$13,856
 $535
202048,577
 2,194
202136,506
 2,244
202228,814
 2,297
202320,793
 2,356
202413,930
 2,411
Thereafter27,697
 51,151
Total future lease payments190,173

63,188
Amount representing interest(26,141) (30,520)
Total lease liabilities$164,032

$32,668

At September 30, 2019, none of the Company's executed leases that had not yet commenced will create significant rights or obligations in the future and its sublease transactions are not material. Additionally, the Company does not have any related party leases and there were no restrictions or covenants imposed by its leases.

Disclosures related to periods prior to adoption of Topic 842
The following is a summary of future minimum payments under operating leases that have initial or remaining non-cancelable lease terms in excess of one year at December 31, 2018 (in thousands):
Year
Total
Operating
Leases
2019$56,480
202045,467
202133,564
202224,509
202315,253
Thereafter35,778
Total minimum lease payments$211,051

During the years ended December 31, 2018, 2017 and 2016, rent expense including short-term rentals was approximately $141.1 million, $125.4 million and $121.9 million, respectively.
(18)(17) SEGMENT REPORTING 
Segment reporting is prepared on the same basis that the Company's chief executive officer, who is the Company's chief operating decision maker, manages the business, makes operating decisions and assesses performance. The Company's operations areCompany is managed inand reports as 2 operating segments:segments; (i) the Environmental Services segment and Safety-Kleen.(ii) the Safety-Kleen segment.
Third-party revenue is revenue billed to outside customers by a particular segment. Direct revenuerevenues is revenue allocated to the segment providing the product or service. Intersegment revenues represent the sharing of third-party revenues among the segments based on products and services provided by each segment as if the products and services were sold directly to the third-party. The intersegment revenues are shown net. The operations not managed through the Company’s operating segments described above are recorded as “Corporate Items.”
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The following table reconciles third-party revenues to direct revenues for the three and ninesix months ended SeptemberJune 30, 2020 and June 30, 2019 and September 30, 2018 (in thousands):
For the Three Months Ended September 30, 2019 For the Three Months Ended September 30, 2018For the Three Months Ended June 30, 2020For the Three Months Ended June 30, 2019
Third-party revenues Intersegment revenues, net Corporate Items, net Direct revenues Third-party revenues Intersegment revenues, net Corporate Items, net Direct revenuesThird-party revenuesIntersegment revenues, netCorporate Items, netDirect revenuesThird-party revenuesIntersegment revenues, netCorporate Items, netDirect revenues
Environmental Services$550,122
 $35,274
 $1,476
 $586,872
 $508,813
 $33,022
 $1,145
 $542,980
Environmental Services$464,354  $31,171  $1,389  $496,914  $526,294  $36,206  $576  $563,076  
Safety-Kleen341,417
 (35,274) 2
 306,145
 333,901
 (33,022) 6
 300,885
Safety-Kleen245,590  (31,171) 137  214,556  342,182  (36,206)  305,984  
Corporate Items129
 
 (1,478) (1,349) 467
 
 (1,151) (684)Corporate Items56  —  (1,526) (1,470) 202  —  (584) (382) 
Total$891,668
 $
 $
 $891,668
 $843,181
 $
 $
 $843,181
Total$710,000  $—  $—  $710,000  $868,678  $—  $—  $868,678  

 For the Nine Months Ended September 30, 2019 For the Nine Months Ended September 30, 2018
 Third-party revenues Intersegment revenues, net Corporate Items, net Direct revenues Third-party revenues Intersegment revenues, net Corporate Items, net Direct revenues
Environmental Services$1,550,114
 $105,555
 $3,301
 $1,658,970
 $1,468,417
 $99,278
 $2,546
 $1,570,241
Safety-Kleen990,146
 (105,555) 15
 884,606
 972,534
 (99,278) 28
 873,284
Corporate Items925
 
 (3,316) (2,391) 1,148
 
 (2,574) (1,426)
Total$2,541,185
 $
 $
 $2,541,185
 $2,442,099
 $
 $
 $2,442,099

For the Six Months Ended June 30, 2020For the Six Months Ended June 30, 2019
Third-party revenuesIntersegment revenues, netCorporate Items, netDirect revenuesThird-party revenuesIntersegment revenues, netCorporate Items, netDirect revenues
Environmental Services$992,458  $68,334  $2,484  $1,063,276  $999,992  $70,281  $1,825  $1,072,098  
Safety-Kleen575,959  (68,334) 143  507,768  648,729  (70,281) 13  578,461  
Corporate Items146  —  (2,627) (2,481) 796  —  (1,838) (1,042) 
Total$1,568,563  $—  $—  $1,568,563  $1,649,517  $—  $—  $1,649,517  
The primary financial measure by which the Company evaluates the performance of its segments is "Adjusted EBITDA," which consists of net income plus accretion of environmental liabilities, depreciation and amortization, net interest expense, netloss on early extinguishment of interest income,debt, provision for income taxes and other gains, losses or non-cash charges not deemed representative of fundamental segment results and excludes other expense (income), net. Transactions between the segments are accounted for at the Company’s best estimate based on similar transactions with outside customers.

The following table presents Adjusted EBITDA information used by management by reported segment (in thousands):
 For the Three Months EndedFor the Six Months Ended
June 30,June 30,
 2020201920202019
Adjusted EBITDA:  
Environmental Services$138,083  $117,868  $246,997  $207,378  
Safety-Kleen46,589  79,459  107,737  134,252  
Corporate Items(49,192) (47,502) (96,664) (90,142) 
Total135,480  149,825  258,070  251,488  
Reconciliation to Consolidated Statements of Operations:  
Accretion of environmental liabilities2,766  2,560  5,327  5,134  
Depreciation and amortization72,494  74,217  147,027  149,572  
Income from operations60,220  73,048  105,716  96,782  
Other expense (income), net500  564  2,865  (2,419) 
Loss on sale of businesses184  —  3,258  —  
Interest expense, net of interest income18,654  20,215  37,441  39,979  
Income before provision for income taxes$40,882  $52,269  $62,152  $59,222  
 For the Three Months Ended For the Nine Months Ended
 September 30, September 30,
 2019 2018 2019 2018
Adjusted EBITDA: 
  
    
Environmental Services$121,658
 $102,419
 $329,036
 $273,035
Safety-Kleen81,326
 79,502
 215,578
 214,455
Corporate Items(46,371) (40,644) (136,513) (118,387)
Total156,613
 141,277
 408,101

369,103
Reconciliation to Consolidated Statements of Operations: 
  
    
Accretion of environmental liabilities2,490
 2,450
 7,624
 7,328
Depreciation and amortization73,756
 73,082
 223,328
 220,686
Income from operations80,367
 65,745
 177,149

141,089
Other expense (income), net427
 996
 (1,992) 449
Loss on early extinguishment of debt6,119
 2,469
 6,119
 2,469
Interest expense, net of interest income19,702
 19,916
 59,681
 60,955
Income before provision for income taxes$54,119
 $42,364
 $113,341

$77,216
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The following table presents certain assets by reportable segment and in the aggregate (in thousands):
 September 30, 2019 December 31, 2018
Property, plant and equipment, net:   
Environmental Services$946,367
 $951,867
Safety-Kleen556,247
 553,220
Corporate Items91,379
 56,891
Total property, plant and equipment, net$1,593,993
 $1,561,978
    
Goodwill and Permits and other intangibles, net:   
Environmental Services   
Goodwill$212,638
 $207,019
Permits and other intangibles, net91,292
 93,313
Total Environmental Services303,930
 300,332
    
Safety-Kleen   
Goodwill$311,943
 $307,170
Permits and other intangibles, net334,571
 348,562
Total Safety-Kleen646,514

655,732
    
Total$950,444
 $956,064

June 30, 2020December 31, 2019
Property, plant and equipment, net:  
Environmental Services$904,626  $939,352  
Safety-Kleen558,597  555,310  
Corporate Items90,585  93,489  
Total property, plant and equipment, net$1,553,808  $1,588,151  
Goodwill and Permits and other intangibles, net:  
Environmental Services  
Goodwill$210,617  $212,531  
Permits and other intangibles, net83,465  89,722  
Total Environmental Services294,082  302,253  
Safety-Kleen
Goodwill$312,537  $312,482  
Permits and other intangibles, net316,983  329,344  
Total Safety-Kleen629,520  641,826  
Total$923,602  $944,079  
The following table presents the total assets by reportable segment (in thousands):
 September 30, 2019 December 31, 2018
Environmental Services$1,750,343
 $1,640,706
Safety-Kleen1,501,838
 1,431,381
Corporate Items769,681
 666,234
Total$4,021,862
 $3,738,321

The following table presents the total assets by geographical area (in thousands):
September 30, 2019 December 31, 2018June 30, 2020December 31, 2019
United States$3,339,899
 $3,090,311
United States$3,461,132  $3,413,254  
Canada681,963
 648,010
Canada and other foreignCanada and other foreign616,497  695,650  
Total$4,021,862
 $3,738,321
Total$4,077,629  $4,108,904  


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 on Form 10-Q contains forward-looking statements, which are generally identifiable by use of the words “believes,” “expects,” “intends,” “anticipates,” “plans"believes," "expects," "intends," "anticipates," "plans to,” “estimates,” “projects,” “may,” “likely”" "seeks," "should," "estimates," "projects," "may," "likely" or similar expressions. These forward-lookingSuch statements may include, but are not limited to, statements about future financial and operating results, the Company's plans, objectives, expectations and intentions and other statements that are not historical facts. Forward-looking statements are neither historical facts nor assurances of future performance. Such statements are based upon the beliefs and expectations of Clean Harbors' management as of this date only and are subject to certain risks and uncertainties that could cause actual results to differ materially, fromincluding, without limitation, the risks and uncertainties surrounding Coronavirus ("COVID-19") and the related impact on our business, and those reflecteditems identified as "Risk Factors,” in these forward-looking statements. Factors that might cause such a difference include, but are not limited to, those discussedthis report under Item 1A “Risk Factors,”and in our Annual Report on Form 10-K filed with the Securities and Exchange Commission on February 27, 2019, under Item 1A, “Risk Factors,” included in Part II—Other Information in this report,26, 2020, and in other documents we file from time to time with the SEC. ReadersTherefore, 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 undertakeOur actual results and financial condition may differ materially from those indicated in the forward-looking statements. Clean Harbors undertakes no obligation to revise or publicly release the results of any revision to these forward-looking statements.statements other than through its filings with the SEC, which may be viewed in the "Investors" section of the Clean Harbors website.
Overview
We are North America’s leading provider of environmental energy and industrial services.services supporting our customers in finding environmentally responsible solutions to further their sustainability goals in today's world. We believe we operate, in the aggregate, the largest number of hazardous waste incinerators, landfills and treatment, storage and disposal facilities ("TSDFs") in North America. We serve a diverse customer base, including Fortune 500 companies, across the chemical, energy, manufacturing and additional markets, as well as numerous government agencies. These customers rely on us to deliver a broad range of services
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including but not limited to end-to-end hazardous waste management, emergency response, industrial cleaning and maintenance and recycling services. We are also the largest re-refiner and recycler of used oil in the worldNorth America and the largest provider of parts cleaningwasher and related environmental services to commercial, industrial and automotive customers in North America.
Performance of our segments is evaluated on several factors of which the primary financial measure is Adjusted EBITDA as described more fully below. The following is a discussion of how management evaluates its segments in regards to other factors including key performance indicators that management uses to assess the segments’ results, as well as certain macroeconomic trends and influences that impact each reportable segment:
Environmental Services - Environmental Services segment results are predicated upon the demand by our customers for waste services directly attributable to volume and nature of waste streams generated by them and project work for which waste handling and/or disposal is required. In managing the business and evaluating performance, management tracks the volumes and average price of waste handled and disposed of through our owned incinerators and landfills, as well as utilization of such incinerators, labor and billable hours and equipment among other key metrics. Levels of activity and ultimate performance associated with this segment can be impacted by several factors including overall U.S. GDP and U.S. industrial production, weather conditions, efficiency of our operations, competition and market pricing of our services and the management of our related operating costs. Environmental Services results are also impacted by the demand for planned and unplanned industrial related cleaning and maintenance services at customer sites and for environmental cleanup services on a scheduled or emergency basis, including response to national events such as major oil spills, natural disasters or other events where immediate and specialized services are required.
Safety-Kleen - Safety-Kleen segment results are impacted by an array of core service offerings that serve to attract small quantity waste producers as customers and integrate them into the Clean Harbors waste network. Core service offerings include parts washer services, containerized waste services, vacuum services, used motor oil collection and sale of base and blended oil products as well as complementary products including automotive related fluids and shop supplies. Key performance indicators tracked by management relative to these services include the number of parts washer services performed and used motor oil and waste volumes collected. Results from these services are primarily driven by the overall number of parts washers placed at customer sites and volumes of waste collected. These factors can be impacted by overall economic conditions in the marketplace, especially in the automotive related area. Safety-Kleen offers high quality base and blended oil products to end users including fleet customers, distributors and manufacturers of oil products. Relative to these oil related products, management tracks the Company's volumes and relative percentages of base and blended oil sales along with various pricing metrics associated with the commodity driven marketplace. The segment's results are significantly impacted by the overall market pricing and product mix associated with base and blended oil products and, more specifically, the market prices of Group II base oils, which historically have correlated with overall crude oil prices. Costs incurred in connection with the collection of used oils and other raw materials associated with the segment’s oil related products can also be volatile. The implementation of our OilPlus® closed loop initiative resulting in the sale of our renewable oil products directly to our end customers will also impact future operating results.

Environmental Services - Environmental Services segment results are predicated upon the demand by our customers for waste services directly attributable to waste volumes generated by them and project work for which waste handling and/or disposal is required. In managing the business and evaluating performance, management tracks the volumes and mix of waste handled and disposed of through our owned incinerators and landfills, as well as utilization of such incinerators, labor and billable hours and equipment among other key metrics. Levels of activity and ultimate performance associated with this segment can be impacted by several factors including overall U.S. GDP and U.S. industrial production, weather conditions, efficiency of our operations, technology, changing regulations, competition, market pricing of our services and the management of our related operating costs. Environmental Services results are also impacted by the demand for planned and unplanned industrial related cleaning and maintenance services at customer sites, environmental cleanup services on a scheduled or emergency basis, including response to national events such as major chemical spills, natural disasters, or other events where immediate and specialized services are required. As a result of the recent COVID-19 pandemic, the business has also seen increased demand for response services relative to contagion disinfection, decontamination and disposal.
Safety-Kleen - Safety-Kleen segment results are impacted by an array of core service and product offerings that serve to attract small quantity waste producers as customers and integrate them into the Clean Harbors waste network. Core service offerings include parts washer services, containerized waste services, vacuum services, used motor oil collection and contract blending and packaging services. Key performance indicators tracked by the Company relative to these services include the number of parts washer services performed and pricing and volume of used motor oil and waste collected. Results from these services are primarily driven by the overall number of parts washers placed at customer sites and volumes of waste collected, as well as the demand for and frequency of other offered services. These factors can be impacted by overall economic conditions in the marketplace, especially in the automotive related area. In addition to its core service offerings, Safety-Kleen offers high quality recycled base and blended oil products to end users including fleet customers, distributors and manufacturers of oil products. Other product offerings include automotive related fluids and shop supplies. Relative to its oil related products, management tracks the Company's volumes and relative percentages of base and blended oil sales along with various pricing metrics associated with the commodity driven marketplace. The segment’s results are significantly impacted by overall market pricing and product mix associated with base and blended oil products and, more specifically, the market prices of Group II base oils. Costs incurred in connection with the collection of used oil and other raw materials associated with the segment’s oil related products can also be volatile. Our OilPlus® closed loop initiative, which results in the sale of our renewable oil products directly to our end customers, may also be impacted by changes in customer demand for high-quality, environmentally responsible recycled oil.
Impact of COVID-19
Corporate Response
In response to the COVID-19 pandemic, the Company has created a dedicated crisis response team to proactively monitor and respond to Company and customer operations, implement plans to execute on opportunities of COVID-19 related decontamination services and enhance health and safety measures for all our employees.
Health and safety is our #1 priority. Our commitment to ensuring the health and safety of our employees, particularly those performing COVID-19 decontamination services for our customers is a pillar of our overall corporate culture. During the pandemic, we have been able to successfully supply our employees with appropriate personal protective equipment ("PPE") for use in servicing our customers in the field and working at our operational and administrative facilities. To support the safety of all of our employees and operations, early precautionary measures were implemented including actively monitoring and reporting employee illness, acquiring and maintaining adequate levels of PPE inventory, suspending non-essential travel, limiting the number of employees attending meetings and reducing the number of people at our locations at any one time. In an effort to contain COVID-19, governments have enacted various measures, including orders to close non-essential businesses and personal and commercial travel restrictions. Operations at our facilities complied with government ordered shutdowns and reopening plans. The COVID-19
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pandemic remains a rapidly evolving situation. We are monitoring changes in the various locations in which we operate and adapting our protocols accordingly.
Impact on Our Financial Statements and Business Operations
The COVID-19 pandemic has resulted in, and is likely to continue to result in, significant economic disruption. The Company's financial results for the three and six months ended June 30, 2020 were significantly impacted by the COVID-19 pandemic. In the latter half of March 2020 and throughout the second quarter, we were measurably impacted by an overall slowdown in economic activity which included closures at some of our customer sites and rising general uncertainty about economic activity into the future. During this time, we have also seen an increase in demand from several customers for disinfecting, decontamination and disposal related emergency response services specifically in response to COVID-19. During the quarter, the Company completed more than 5,500 projects responding specifically to the risk of COVID-19 and amounting to approximately $50.0 million of revenue. These increased levels of emergency response work, however, did not overcome the overall levels of service work lost due to the impacts of the COVID-19 pandemic.
The Company expects to continue to experience the impacts of COVID-19 throughout the remainder of 2020. In our Environmental Services segment, continued lower activity levels and shutdowns of customers' operations could decrease the level of our services that are required and the quantities of commercial and industrial waste disposed of throughout our network of facilities. Lower demand for oil and overall price declines in the global oil market, resulting from COVID-19 impacts, could impact the level of environmental services we provide to our customers in that market. We expect the increase in emergency response work for COVID-19 related decontamination services to continue, however these additional services are not expected to fully offset the negative impact of COVID-19 on our Environmental Services segment.
We expect that the services provided by our Safety-Kleen segment will continue to be significantly impacted by less automotive related travel and any ongoing customer shutdowns reducing demand for Safety-Kleen core services and products. We have observed declining demand in the primary sectors impacting this business including the overall automotive sector, as consumer activity decelerated across the United States and Canada. Lower oil related demand and price declines in the global oil market, exacerbated by COVID-19 impacts, are also expected to reduce revenues generated by the business in 2020. In order to respond to the impact on the Safety-Kleen business and in particular the reduced availability of used motor oils which are utilized as feedstock in our re-refining processes and reduced demand for base and blended oil products, in April 2020, we temporarily shuttered nearly half of the total production capacity of our oil re-refineries. However, in July 2020, in response to more positive trends in oil demand, certain facilities were brought back online, increasing the current production to approximately 70% of total production capacity.
The Company considered the impact of COVID-19 on the assumptions and estimates used in the preparation of the financial statements and did not identify any significant changes in estimates. Specifically, management concluded that there had not been any triggering events requiring further assessment of asset impairments. Management also assessed the extent to which the current macroeconomic events brought about by COVID-19 and significant declines in oil demand may have impacted the valuation of expected credit losses on accounts receivable and certain inventory items or resulted in modifications to any significant contracts. Ultimately the results of these assessments did not have a material impact on the Company's results as of June 30, 2020.
In regards to liquidity and capital resources, as of June 30, 2020, the Company had $506.7 million in cash and marketable securities and $135.3 million of remaining borrowing availability under the revolving credit facility. On July 28, 2020, the Company repaid the remaining $75.0 million outstanding balance on the revolving credit facility. Other than $7.5 million of annual payments on the Company's secured senior term loans, there are no debt maturities until June 2024, when those term loans are due. To maintain a strong liquidity position through 2020 and beyond, the Company is actively considering, planning and executing cost reduction initiatives, significantly reducing 2020 capital expenditures from previously forecasted amounts and considering all aspects of eligible government programs.
Impact of Government Programs
On March 27, 2020, the Coronavirus Aid, Relief and Economic Security Act ("CARES Act") was signed into law in response to the widespread economic impact of the COVID-19 pandemic. On April 11, 2020, the Canadian federal government enacted the COVID-19 Emergency Response Act, No.2, which implemented the Canada Emergency Wage Subsidy ("CEWS"). During the quarter ended June 30, 2020, management considered and analyzed the Company's eligibility under such government programs. Most significantly, the Company applied for certain employee retention credits under the CARES Act and the wage
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subsidy under the CEWS. The table below summarizes the benefit of these government programs recorded in the statement of operations for the periods ending June 30, 2020 (in thousands):
Environmental ServicesSafety-KleenCorporate ItemsTotal
Cost of revenues$8,997  $4,864  $415  $14,276  
Selling, general and administrative expenses4,267  3,407  1,449  9,123  
Total$13,264  $8,271  $1,864  $23,399  
The Company received $3.3 million of the total subsidy under the CEWS prior to June 30, 2020 and the remaining portion was received in early July 2020. The Company expects to receive the CARES Act funds in the third quarter of 2020. Although the Company did implement certain cost reduction plans associated with labor in the second quarter, these government programs have allowed our workforce to remain stable during the temporary slowdown in activity.
The CARES Act and earlier issued guidance by the Internal Revenue Service allowed us to defer the payment of certain payroll and income tax payments. In total, we deferred operating cash payments of $25.0 million during the six months ended June 30, 2020, comprised of $11.9 million of payroll taxes which will be repaid in 2021 and 2022 and $13.1 million of income taxes which were paid in July 2020.
Highlights
Total revenues for the three and ninesix months ended SeptemberJune 30, 20192020 were $891.7$710.0 million and $2,541.2$1,568.6 million, compared with $843.2$868.7 million and $2,442.1$1,649.5 million for the three and ninesix months ended SeptemberJune 30, 2018.2019. In the three and ninesix months ended SeptemberJune 30, 2019,2020, our Environmental Services segment increased direct revenues 8.1%decreased 11.8% and 5.7%0.8% from the comparable periods in 20182019, primarily due to continued improvementssignificantly lower demand for our industrial and technical related services resulting from lower overall economic activity which also caused some of our customers to delay the timing of industrial turnarounds, environmental related projects and other waste disposal services in average pricing drivenresponse to the COVID-19 pandemic. This decrease was partially offset by a more profitable mixincreased emergency response services in the wake of waste streams primarily from chemical and manufacturing customers.the COVID-19 pandemic. In the three and ninesix months ended SeptemberJune 30, 2019,2020, our Safety-Kleen segment increased direct revenues 1.7%decreased 29.9% and 1.3%12.2% from the comparable periods in 2018 as a result2019, predominantly due to lower demand and prices across the Safety-Kleen portfolio of continued growth across Safety-Kleen'sproducts and core service offeringsservices also resulting from overall lower economic activity, customer shutdowns and our blendedlower oil sales.demand stemming from the COVID-19 pandemic. Increased revenues from used motor oil collections partially offset these decreases for the Safety-Kleen segment. The fluctuation of the Canadian dollar negatively impacted our consolidated revenues by $1.5$3.1 million and $13.1$4.3 million in the three and ninesix months ended SeptemberJune 30, 2019.2020.
We reported income from operations for the three and ninesix months ended SeptemberJune 30, 20192020 of $80.4$60.2 million and $177.1$105.7 million compared with $65.7$73.0 million and $141.1$96.8 million in the three and ninesix months ended SeptemberJune 30, 2018.2019. We reported net income for the three and ninesix months ended SeptemberJune 30, 20192020 of $36.4$29.0 million and $73.6$40.6 million compared with net income of $31.1$36.2 million and $49.2$37.2 million in the three and ninesix months ended SeptemberJune 30, 2018.2019.
Adjusted EBITDA, which is the primary financial measure by which our segments are evaluated, increased 10.9%decreased 9.6% to $156.6$135.5 million in the three months ended SeptemberJune 30, 20192020 from $141.3$149.8 million in the three months ended SeptemberJune 30, 20182019 and increased 10.6%2.6% to $408.1$258.1 million in the ninesix months ended SeptemberJune 30, 20192020 from $369.1$251.5 million in the ninesix months ended SeptemberJune 30, 2018.2019. Additional information, including a reconciliation of Adjusted EBITDA to net income, appears below under the heading "Adjusted EBITDA."
Net cash from operating activities for the ninesix months ended SeptemberJune 30, 20192020 was $284.7$173.5 million, an increase of $37.5$35.0 million from the comparable period in 2018.2019. Adjusted free cash flow, which management uses to measure our financial strength and ability to generate cash, was $119.1an inflow of $71.9 million in the ninesix months ended SeptemberJune 30, 2019,2020, compared to $102.6an inflow of $27.5 million in the comparable period of 2018. The increase in adjusted free cash flow in the first nine months of 2019 as compared to the first nine months of 2018 was most directly attributable to greater levels of operating income and improvements in working capital, offset by increased capital spending. During the most recent three-month period ended September 30, 2019 adjusted free cash flow was $91.6 million as compared to $64.4 million in the same period of 2018.2019. Additional information, including a reconciliation of adjusted free cash flow to net cash from operating activities, appears below under the heading "Adjusted Free Cash Flow."

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Segment Performance
The primary financial measure by which we evaluate the performance of our segments is Adjusted EBITDA. The following table sets forth certain financial information associated with our results of operations for the three and ninesix months ended SeptemberJune 30, 20192020 and SeptemberJune 30, 20182019 (in thousands, except percentages).:
Summary of Operations
For the Three Months EndedFor the Six Months Ended
June 30, 2020June 30, 2019$
Change
%
Change
June 30, 2020June 30, 2019$
Change
% Change
Summary of Operations
For the Three Months Ended For the Nine Months Ended
September 30, 2019 September 30, 2018 
$
Change
 
%
Change
 September 30, 2019 September 30, 2018 $
Change
 %
Change
Direct Revenues(1):
 
  
  
         
Direct Revenues(1):
    
Environmental Services$586,872
 $542,980
 $43,892
 8.1% $1,658,970
 $1,570,241
 $88,729
 5.7%Environmental Services$496,914  $563,076  $(66,162) (11.8)%$1,063,276  $1,072,098  $(8,822) (0.8)%
Safety-Kleen306,145
 300,885
 5,260
 1.7 884,606
 873,284
 11,322
 1.3Safety-Kleen214,556  305,984  (91,428) (29.9)507,768  578,461  (70,693) (12.2)
Corporate Items(1,349) (684) (665) N/M (2,391) (1,426) (965) N/MCorporate Items(1,470) (382) (1,088) N/M(2,481) (1,042) (1,439) N/M
Total891,668
 843,181
 48,487
 5.8 2,541,185
 2,442,099
 99,086
 4.1Total710,000  868,678  (158,678) (18.3)1,568,563  1,649,517  (80,954) (4.9)
Cost of Revenues(2):
 
  
  
        
  
Cost of Revenues(2):
      
Environmental Services417,954
 395,949
 22,005
 5.6 1,203,367
 1,168,349
 35,018
 3.0Environmental Services322,906  400,306  (77,400) (19.3)734,378  785,413  (51,035) (6.5)
Safety-Kleen189,190
 183,112
 6,078
 3.3 558,609
 542,343
 16,266
 3.0Safety-Kleen140,051  189,053  (49,002) (25.9)334,629  369,419  (34,790) (9.4)
Corporate Items5,610
 1,624
 3,986
 N/M 10,075
 2
 10,073
 N/MCorporate Items7,724  5,574  2,150  N/M8,340  4,465  3,875  N/M
Total612,754
 580,685
 32,069
 5.5 1,772,051
 1,710,694
 61,357
 3.6Total470,681  594,933  (124,252) (20.9)1,077,347  1,159,297  (81,950) (7.1)
Selling, General & Administrative Expenses:Selling, General & Administrative Expenses:  
  
        
  Selling, General & Administrative Expenses:     
Environmental Services47,260
 44,612
 2,648
 5.9 126,567
 128,857
 (2,290) (1.8)Environmental Services35,925  44,902  (8,977) (20.0)81,901  79,307  2,594  3.3
Safety-Kleen35,629
 38,271
 (2,642) (6.9) 110,419
 116,486
 (6,067) (5.2)Safety-Kleen27,916  37,472  (9,556) (25.5)65,402  74,790  (9,388) (12.6)
Corporate Items39,412
 38,336
 1,076
 2.8 124,047
 116,959
 7,088
 6.1Corporate Items39,998  41,546  (1,548) (3.7)85,843  84,635  1,208  1.4
Total122,301
 121,219
 1,082
 0.9 361,033
 362,302
 (1,269) (0.4)Total103,839  123,920  (20,081) (16.2)233,146  238,732  (5,586) (2.3)
Adjusted EBITDA: 
  
  
        
  Adjusted EBITDA:      
Environmental Services121,658
 102,419
 19,239
 18.8 329,036
 273,035
 56,001
 20.5Environmental Services138,083  117,868  20,215  17.2246,997  207,378  39,619  19.1
Safety-Kleen81,326
 79,502
 1,824
 2.3 215,578
 214,455
 1,123
 0.5Safety-Kleen46,589  79,459  (32,870) (41.4)107,737  134,252  (26,515) (19.8)
Corporate Items(46,371) (40,644) (5,727) (14.1) (136,513) (118,387) (18,126) 15.3Corporate Items(49,192) (47,502) (1,690) (3.6)(96,664) (90,142) (6,522) (7.2)
Total$156,613
 $141,277
 $15,336
 10.9% $408,101
 $369,103
 $38,998
 10.6%Total$135,480  $149,825  $(14,345) (9.6)%$258,070  $251,488  $6,582  2.6%
_____________________
N/M = not meaningful
(1)Direct revenue is revenue allocated to the segment performing the provided service.
(2)Cost of revenue is shown exclusive of items presented separately on the statements of operations which consist of (i) accretion of environmental liabilities and (ii) depreciation and amortization.

(1)Direct revenue is revenue allocated to the segment performing the provided service.
(2)Cost of revenue is shown exclusive of items presented separately on the statements of operations which consist of (i) accretion of environmental liabilities and (ii) depreciation and amortization.
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Direct Revenues
There are many factors which have impacted and continue to impact our revenues. Theserevenues, including a significant impact to our revenue resulting from COVID-19 as discussed in Impact of COVID-19 above. Other factors impacting our revenues include, but are not limited to: overall levels of industrial activity and growth in North America, existence or non-existence of large scale environmental waste and remediation projects, competitive industry pricing, miles driven and related lubricant demand, impacts of acquisitions and divestitures, the level of emergency response projects, general conditions of the energy related industries, base and blended oil pricing, market changes relative to the collection of used oil, the number of parts washers placed at customer sites and foreign currency translation. In addition, customer efforts to minimalize hazardous waste and changes in regulation can also impact our revenues.
Environmental Services
For the Three Months Ended For the Nine Months EndedFor the Three Months EndedFor the Six Months Ended
September 30, 2019 over 2018 September 30, 2019 over 2018June 30,2020 over 2019June 30,2020 over 2019
(in thousands, except percentages)2019 2018 $
Change
 %
Change
 2019 2018 
$
Change
 
%
Change
(in thousands, except percentages)20202019$
Change
%
Change
20202019$ Change% Change
Direct revenues$586,872
 $542,980
 $43,892
 8.1% $1,658,970
 $1,570,241
 $88,729
 5.7%Direct revenues$496,914  $563,076  $(66,162) (11.8)%$1,063,276  $1,072,098  $(8,822) (0.8)%
Environmental Services direct revenues for the three months ended SeptemberJune 30, 2019 increased $43.92020 decreased $66.2 million from the comparable period in 20182019, driven primarily by significantly lower demand for our industrial and technical related services due to higher serviceslowing economic activity in light of the COVID-19 pandemic, which also caused our customers to delay the timing of industrial turnarounds, environmental remediation projects and other waste disposal services. The Company generated $50.0 million of direct revenues from COVID-19 related revenues and increased volumesemergency response services in the second quarter of higher priced waste streams disposed of in2020. Operations at our network of facilities. Higher value waste streamsfacilities were relatively consistent with the comparable period in the prior year. Direct revenues at our incinerator facilities droveincreased $6.9 million from prior year, which was driven by an average price per tonincreased volume of higher value waste streams. Incinerator utilization was at 87%, a 5% increase over the prior year. In the second quarter of approximately 12%. The2019, utilization rate at our incinerators had been unfavorably impacted by down days for maintenance related turnarounds which did not recur in 2020. Lower volumes at our landfill facilities resulted in a $3.0 million decrease in direct revenues in the second quarter of 2020 when compared with the same quarter in the prior year. Also impacting this change in direct revenues within the Environmental Services segment was the negative impact of foreign currency translation on an annual practical capacityour Canadian operations of 561,721 tons was 91.5%$2.5 million.
Environmental Services direct revenues for the threesix months ended SeptemberJune 30, 2019, compared with 83.5% in the comparable period of 2018. The increase in utilization rate in the three months ended September 30, 20192020 decreased $8.8 million from the comparable period in 2018 was2019 primarily due to fewer down days during the third quarterimpacts of 2019.the COVID-19 pandemic experienced in the second quarter. The increase in serviceCompany generated $60.0 million of direct revenues from COVID-19 related emergency response services and increased utilization and average pricing at our incinerator facilities which contributed $30.9 million of incremental direct revenues in the quarter resulted, in part, fromfirst six months of 2020. Utilization at our incinerator facilities was 86% for the six months ended June 30, 2020, a higher frequency of emergency response work associated with Field and Emergency Response Services offset by lower Industrial Services revenues. Also included7% increase over the same period in the prior year. In the first half of 2019, incinerator utilization was unfavorably impacted by a fire at a neighboring facility and additional down days for maintenance-related turnarounds, neither of which recurred in 2020. Also impacting the year over year change in direct revenues within this segment was the negative impact of foreign currency translation on our Canadian operations of $1.1$3.4 million.
Environmental Services direct revenues for We expect to see a slowdown in the nine months ended September 30, 2019 increased $88.7 million from the comparable period in 2018. Higher service related revenues and higher pricedvolume of waste streams disposed of in our network of facilities contributedin the third quarter due to the increaseeconomic slowdowns thus far in direct revenues in the nine months ended September 30, 2019. Higher value2020 as waste streams at our incinerator facilities drove an average price per ton increase of approximately 14%. The utilization rate at our incinerators on an annual practical capacity of 561,721 tons was 83.1% for the nine months ended September 30, 2019, compared with 86.9% in the comparable period of 2018. The decrease in utilization rate in the nine months ended September 30, 2019 from the comparable period in 2018 was primarily duedisposal tends to a high number of down days at our Deer Park facility during the first quarter which was attributable to a fire at a neighboring facility. The increase in Field and Emergency Response Services revenues in the nine months ended September 30, 2019 resulted from increased emergency response related work as well aslag behind overall growth in Field Services. Industrial Services revenues partially offset this increase as turnaround related services in 2019 were lower than the comparable period in the prior year. Also included in the change within this segment was the negative impact of foreign currency translation on our Canadian operations of $9.5 million.economic changes.
Safety-Kleen
For the Three Months Ended For the Nine Months EndedFor the Three Months EndedFor the Six Months Ended
September 30, 2019 over 2018 September 30, 2019 over 2018June 30,2020 over 2019June 30,2020 over 2019
(in thousands, except percentages)2019 2018 $
Change
 %
Change
 2019 2018 
$
Change
 
%
Change
(in thousands, except percentages)20202019$
Change
%
Change
20202019$
Change
%
Change
Direct revenues$306,145
 $300,885
 $5,260
 1.7% $884,606
 $873,284
 $11,322
 1.3%Direct revenues$214,556  $305,984  $(91,428) (29.9)%$507,768  $578,461  $(70,693) (12.2)%
Safety-Kleen direct revenues for the three months ended SeptemberJune 30, 2019 increased $5.32020 decreased $91.4 million from the comparable period in 2018. This increase was primarily2019. Significantly reduced demand for core services resulting from lower automotive travel, customer shutdowns, in many cases forced by government directives and lower demand for oil related products, all stemming from the COVID-19 pandemic, drove these lower revenue levels. Base oil sales decreased $43.1 million from the comparable period in 2019 due to growthlower sales volume and lower pricing, while blended oil sales decreased approximately $22.2 million from the comparable period in the Safety Kleen2019, more predominately due to lower sales volumes. Recycled fuel oil and refinery byproducts sales decreased $13.3 million, driven by both lower sales volume and lower pricing. Decreased demand for Safety-Kleen's branch network’snetwork's core service offerings including handling ofalso contributed to the decline in direct revenues as containerized waste and vacuum services which accounted for $5.0revenues and parts washer services revenues decreased by $21.2 million of incremental revenuesand $7.8 million, respectively, from the comparable period in 2018. This growth2019. Offsetting these decreases was a $15.1 million
25

increase in direct revenues was driven by both higher service volumes and pricing. Higher volumes of blendedfrom used motor oil sales, primarily from our direct lube oil program, also drove an incremental $2.4 million of direct revenues. Thesecollections due to pricing increases were partially offset by a decrease in base oil sales of $2.9 million, primarily driven by a reduction in base oil pricing in response to lower demand across the base oil market.on these services. The impact of foreign currency translation on our Safety-Kleen Canadian operations was minimal.
Safety-Kleen direct revenues for the ninesix months ended SeptemberJune 30, 2019 increased $11.32020 decreased $70.7 million from the comparable period in 2018. The Safety-Kleen2019 due to the impacts of the COVID-19 pandemic experienced in the second quarter. Base oil sales decreased $28.0 million from the comparable period in 2019 due to lower volume and lower pricing, and blended oil sales decreased $18.0 million due to lower volumes. Recycled fuel oil and refinery byproducts decreased $18.0 million, driven by lower volumes and, to a lesser extent, lower pricing. Decreased demand for Safety-Kleen's branch network's core service offerings accounted for $17.9 million of incrementalalso contributed to the decline in direct revenues in 2019

due to higher service volumesas containerized waste and pricing. Higher volumes of blended oil sales, primarily from our direct lube oil program,vacuum services revenues and increased pricing of used motor oil collections contributed $10.4parts washer services revenues decreased by $17.6 million and $3.6$8.8 million, respectively, to the growth in direct revenues from the comparable period in 2018. These increases were partially offset by2019. Offsetting these decreases was a $15.6$15.3 million decreaseincrease in basedirect revenue from used motor oil salescollections due to reductions in pricing experienced in 2019 in response to lower demand across the base oil market and lower base oil volumes, most significantly seen in the first quarter of 2019. Also included in the change within this segment was the negativeincreases on these services. The impact of foreign currency translation on our Safety-Kleen Canadian operations was minimal. Slow incremental improvements in the demand for the segment's core service offerings in the latter half of $3.5 million.the second quarter are expected to continue in the second half of the year if national and state reopening plans continue to prove successful.
Cost of Revenues 
We believe that our ability to manage operating costs is important to our ability to remain price competitive. We continue to upgrade the quality and efficiency of our services through the development of new technology and continued modifications at our facilities, invest in new business opportunities and aggressively implement strategic sourcing and logistics solutions as well as other cost reduction initiatives, while also continuing to optimize our management and operating structure in an effort to maintain and increase operating margins.
Environmental Services
For the Three Months Ended For the Nine Months EndedFor the Three Months EndedFor the Six Months Ended
September 30, 2019 over 2018 September 30, 2019 over 2018June 30,2020 over 2019June 30,2020 over 2019
(in thousands, except percentages)2019 2018 Change %
Change
 2019 2018 Change 
%
Change
(in thousands, except percentages)20202019$
Change
%
Change
20202019$
Change
%
Change
Cost of revenues$417,954
 $395,949
 $22,005
 5.6% $1,203,367 $1,168,349 $35,018
 3.0%Cost of revenues$322,906  $400,306  $(77,400) (19.3)%$734,378  $785,413  $(51,035) (6.5)%
As a % of Direct Revenues71.2% 72.9% (1.7)% 
 72.5% 74.4% (1.9)% 
As a % of Direct revenuesAs a % of Direct revenues65.0 %71.1 %(6.1)%69.1 %73.3 %(4.2)%
Environmental Services cost of revenues for the three months ended SeptemberJune 30, 2019 increased $22.02020 decreased $77.4 million from the comparable period in 2018 primarily due2019, including a $33.5 million decrease to increased equipment and supply costs of $9.7 million, labor and benefits related costs, including travel costs, a $24.1 million decrease to equipment and supply costs and a $17.0 million decrease in transportation, disposal and fuel costs. These decreases were mainly attributable to lower direct revenues, as well as a $9.0 million reduction to labor and benefits related costs directly attributable to the employee retention credit and subsidies recorded in the second quarter of $6.9 million2020 under the CARES Act and transportation and outside disposal costsCEWS. Absent these benefits, cost of $2.5 million. These increases are expected with the increase in direct revenues. Asrevenues as a percentage of direct revenues these costs have decreasedimproved 4.3% primarily due to better leverage of our employee base in connection with our emergency response work resulting in lower subcontractor spending, cost reduction initiatives and higher utilization at our incinerators and greater leverage of our fixed costs during the three months ended September 30, 2019.incinerators.
Environmental Services cost of revenues for the ninesix months ended SeptemberJune 30, 2019 increased $35.02020 decreased $51.0 million from the comparable period in 2018 primarily due2019, including a $21.4 million decrease to increased labor and benefits related costs, of $12.4including travel costs, an $18.1 million decrease to transportation, disposal and fuel costs and an $11.8 million decrease to equipment and supply costs. These decreases were mainly attributable to lower direct revenues, as well as a $9.0 million reduction to labor and benefits related costs for the employee retention credit and subsidies recorded in the second quarter of 2020 under the CARES Act and CEWS. Absent these benefits, costs of $11.5 million and transportation and outside disposal costs of $5.0 million. These costs decreasedrevenues as a percentage of direct revenues improved 3.3% also primarily due to greaterbetter leverage of employee base in connection with our fixed costs during the nine months ended September 30, 2019.emergency response work resulting in lower subcontractor spending, cost reduction initiatives and higher utilization at our incinerators.
26

Table of Contents
Safety-Kleen
 For the Three Months Ended For the Nine Months Ended
 September 30, 2019 over 2018 September 30, 2019 over 2018
(in thousands, except percentages)2019 2018 Change %
Change
 2019 2018 Change 
%
Change
Cost of revenues$189,190
 $183,112
 $6,078
 3.3% $558,609
 $542,343
 $16,266
 3.0%
As a % of Direct Revenues61.8% 60.9% 0.9% 
 63.1% 62.1% 1.0% 
Safety-Kleen
For the Three Months EndedFor the Six Months Ended
June 30,2020 over 2019June 30,2020 over 2019
(in thousands, except percentages)20202019$
Change
%
Change
20202019$
Change
%
Change
Cost of revenues$140,051  $189,053  $(49,002) (25.9)%$334,629  $369,419  $(34,790) (9.4)%
As a % of Direct revenues65.3 %61.8 %3.5 %65.9 %63.9 %2.0 %
Safety-Kleen cost of revenues for the three months ended SeptemberJune 30, 2019 increased $6.12020 decreased $49.0 million from the comparable period in 2018 primarily due to increased2019, including a $19.4 million decrease in costs of oil additives and other raw materials, a $12.3 million decrease in labor and benefits related costs, including travel costs and an $11.2 million decrease in transportation, disposal and fuel costs. These decreases were mainly attributable to lower direct revenues, as well as a $4.9 million reduction to labor and benefits related costs directly related to the employee retention credit and subsidies recorded in the second quarter of $3.8 million2020 under the CARES Act and transportation and disposalCEWS. Absent these benefits, costs of $1.1 million, offset by a reduction in raw material costs of $2.3 million. The remaining cost increase was spread across various expense categories. The overall increase in cost of revenues was consistent with the growth of our core service offerings. Cost as a percentage of direct revenues remained relatively consistent withincreased 5.8% as certain fixed costs could not be reduced proportionate to the comparable period of 2018.overall lower business activity.
Safety-Kleen cost of revenues for the ninesix months ended SeptemberJune 30, 2019 increased $16.32020 decreased $34.8 million from the comparable period in 2018 primarily due to increased2019, including a $16.2 million decrease in costs of oil additives and other raw materials, a $9.1 million decrease in transportation, disposal and fuel costs and an $8.1 million decrease in labor and benefits related costs, including travel costs. These decreases were mainly attributable to lower direct revenues, as well as a $4.9 million reduction to labor and benefits related costs for the employee retention credit and subsidies recorded in the second quarter of $7.1 million, raw material2020 under the CARES Act and CEWS. Absent these benefits, costs of $3.8 million and transportation and disposal costs of $2.0 million. These increases in cost of revenues were consistent with the growth of our core service offerings and blended oil sales. The remaining cost increase was spread across various expense categories. Costs as a percentage of direct revenues increased over3.0% as certain fixed costs could not be reduced proportionate to the comparable period of 2018 due to these costs which outpaced the growth in direct revenues.overall lower business activity.
Selling, General and Administrative Expenses
We strive to manage our selling, general and administrative ("SG&A") expenses commensurate with the overall performance of our segments and corresponding revenue levels. We believe that our ability to properly align these costs with

business performance is reflective of our strong management of the businesses and further promotes our ability to remain competitive in the marketplace.
Environmental Services
For the Three Months Ended For the Nine Months EndedFor the Three Months EndedFor the Six Months Ended
September 30, 2019 over 2018 September 30, 2019 over 2018June 30,2020 over 2019June 30,2020 over 2019
(in thousands, except percentages)
2019 2018 

Change
 
%
Change
 2019 2018 
Change
 %
Change
(in thousands, except percentages)20202019$
Change
%
Change
20202019$
Change
%
Change
SG&A expenses$47,260
 $44,612
 $2,648
 5.9% $126,567
 $128,857
 $(2,290) (1.8)%SG&A expenses$35,925  $44,902  $(8,977) (20.0)%$81,901  $79,307  $2,594  3.3 %
As a % of Direct Revenues8.1% 8.2% (0.1)% 
 7.6% 8.2% (0.6)% 
As a % of Direct revenuesAs a % of Direct revenues7.2 %8.0 %(0.8)%7.7 %7.4 %0.3 %
Environmental Services SG&A expenses for the three months ended SeptemberJune 30, 20192020 decreased $9.0 million from the comparable period in 2019. This decrease in SG&A expenses was primarily attributable to lower direct revenues and therefore lower sales related costs, as well as a $4.3 million reduction in labor and benefits related costs for the employee retention credit and subsidies recorded in the second quarter of 2020 under the CARES Act and CEWS. Absent these benefits, Environmental Services SG&A expenses as a percentage of direct revenues remained relatively consistent with the comparable period in 2019.
Environmental Services SG&A expenses for the six months ended June 30, 2020 increased $2.6 million from the comparable period in 2018 primarily due2019. Contributing to increasesthis increase was the favorable resolution of a litigation matter of $5.5 million and recovery of certain trade receivables of $5.4 million, both of which were recorded in salary,the first quarter of 2019, offset by the $4.3 million reduction in labor and benefits and variable compensation related costs which were consistent with the growth of the business for the three months ended September 30, 2019employee retention credit and subsidies recorded in the second quarter of 2020 under the CARES Act and CEWS. Absent these nonrecurring transactions, Environmental Services SG&A expenses as compared to September 30, 2018. As a percentage of direct revenue, SG&A costsrevenues remained relatively consistent with the comparable period in 2018. We expect this trend to continue for the remainder2019.
27

Table of the year as revenues continue to exceed prior year levels.
Safety-Kleen
 For the Three Months Ended For the Nine Months Ended
 September 30, 2019 over 2018 September 30, 2019 over 2018
(in thousands, except percentages)2019 2018 

Change
 
%
Change
 2019 2018 
Change
 %
Change
SG&A expenses$35,629
 $38,271
 $(2,642) (6.9)% $110,419
 $116,486
 $(6,067) (5.2)%
As a % of Direct Revenues11.6% 12.7% (1.1)% 
 12.5% 13.3% (0.8)% 
Safety-Kleen
For the Three Months EndedFor the Six Months Ended
June 30,2020 over 2019June 30,2020 over 2019
(in thousands, except percentages)20202019$
Change
%
Change
20202019$
Change
%
Change
SG&A expenses$27,916  $37,472  $(9,556) (25.5)%$65,402  $74,790  $(9,388) (12.6)%
As a % of Direct revenues13.0 %12.2 %0.8 %12.9 %12.9 %— %
Safety-Kleen SG&A expenses for the three and ninesix months ended SeptemberJune 30, 20192020 decreased $2.6$9.6 million and $6.1$9.4 million, respectively, from the comparable periods in 20182019. These decreases were primarily dueattributable to decreaseslower direct revenues and therefore lower sales related costs, as well as a $3.4 million reduction in payrolllabor and variable compensationbenefits related costs resulting from lower headcountfor the employee retention credit and cost saving initiatives implemented bysubsidies recorded in the business in recent periods. Assecond quarter of 2020 under the CARES Act and CEWS. Absent these benefits, Safety-Kleen SG&A expenses as a percentage of direct revenue, SG&A expenses decreased fromrevenues were higher than the comparable periods in 2018 as2019 due to a result$1.8 million change in an environmental liability estimate for a Superfund site recorded in the second quarter of lower costs and increased revenues generated by the business.2020.
Corporate Items
For the Three Months Ended For the Nine Months EndedFor the Three Months EndedFor the Six Months Ended
September 30, 2019 over 2018 September 30, 2019 over 2018June 30,2020 over 2019June 30,2020 over 2019
(in thousands, except percentages)2019 2018 
$
Change
 
%
Change
 2019 2018 $
Change
 %
Change
(in thousands, except percentages)20202019$
Change
%
Change
20202019$
Change
%
Change
SG&A expenses$39,412
 $38,336
 $1,076
 2.8% $124,047
 $116,959
 $7,088
 6.1%SG&A expenses$39,998  $41,546  $(1,548) (3.7)%$85,843  $84,635  $1,208  1.4 %
Corporate Items SG&A expenses for the three months ended SeptemberJune 30, 2019 increased $1.12020 decreased $1.5 million from the comparable period in 2018 primarily2019 due to increased stock-based compensation expensea $1.9 million reduction in labor and benefits related costs, predominately driven by the employee retention credit and subsidies of $0.9 million. Included$1.4 million recorded in this changethe second quarter of 2020 under the CARES Act and CEWS. Corporate Items SG&A expense was an increase in benefits related costsexpenses for the three months ended June 30, 2020, also decreased by $1.0 million each for stock-based compensation and professional fees, partially offset by a decrease$3.1 million increase in variable compensation.severance related costs.
Corporate Items SG&A expenses for the ninesix months ended SeptemberJune 30, 20192020 increased $7.1$1.2 million from the comparable period in 20182019 primarily due to our increased investmentmarketing expenses of $4.0 million to expand brand awareness and a $3.1 million increase in our employees. During the nine months ended September 30, 2019, salary, benefits and variable compensationseverance related costs, increased by $8.9 million and stock-based compensation increased by $3.9 million from the comparable period in 2018. These increases were partially offset by a $3.4$3.6 million decrease in stock-based compensation and the $1.4 million reduction in professional fees.

labor costs for the employee retention credit and subsidies recorded in the second quarter of 2020 under the CARES Act and CEWS.
Adjusted EBITDA
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 ("GAAP"). Adjusted EBITDA is not calculated identically by all companies and therefore our measurements of Adjusted EBITDA, while defined consistently and in accordance with our existing credit agreement, may not be comparable to similarly titled measures reported by other companies.
For the Three Months Ended For the Nine Months Ended For the Three Months EndedFor the Six Months Ended
September 30, 2019 over 2018 September 30, 2019 over 2018June 30,2020 over 2019June 30,2020 over 2019
(in thousands, except percentages)2019 2018 $
Change
 %
Change
 2019 2018 $
Change
 %
Change
(in thousands, except percentages)20202019$
Change
%
Change
20202019$
Change
%
Change
Adjusted EBITDA: 
  
  
          Adjusted EBITDA:    
Environmental Services$121,658
 $102,419
 $19,239
 18.8 % $329,036
 $273,035
 $56,001
 20.5 %Environmental Services$138,083  $117,868  $20,215  17.2 %$246,997  $207,378  $39,619  19.1 %
Safety-Kleen81,326
 79,502
 1,824
 2.3
 215,578
 214,455
 1,123
 0.5
Safety-Kleen46,589  79,459  (32,870) (41.4) 107,737  134,252  (26,515) (19.8) 
Corporate Items(46,371) (40,644) (5,727) (14.1) (136,513) (118,387) (18,126) (15.3)Corporate Items(49,192) (47,502) (1,690) (3.6) (96,664) (90,142) (6,522) (7.2) 
Total$156,613
 $141,277
 $15,336
 10.9 % $408,101
 $369,103
 $38,998
 10.6 %Total$135,480  $149,825  $(14,345) (9.6)%$258,070  $251,488  $6,582  2.6 %
We use Adjusted EBITDA to enhance our understanding of our 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 certain expenses relating to transactions not reflective of our core operations.
28

The information about our 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 lenders since our loan covenants are based upon levels of Adjusted EBITDA achieved and to our board of directors and we 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 and stock 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.
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 users of our financial statements 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 for the following periods (in thousands, except percentages):
 For the Three Months Ended For the Nine Months Ended
 September 30, September 30,
 2019 2018 2019 2018
Net income$36,369
 $31,089
 $73,589
 $49,205
Accretion of environmental liabilities2,490
 2,450
 7,624
 7,328
Depreciation and amortization73,756
 73,082
 223,328
 220,686
Other expense (income), net427
 996
 (1,992) 449
Loss on early extinguishment of debt6,119
 2,469
 6,119
 2,469
Interest expense, net of interest income19,702
 19,916
 59,681
 60,955
Provision for income taxes17,750
 11,275
 39,752
 28,011
Adjusted EBITDA$156,613

$141,277

$408,101

$369,103
As a % of Direct Revenues17.6% 16.8% 16.1% 15.1%

For the Three Months EndedFor the Six Months Ended
 June 30,June 30,
 2020201920202019
Net income$29,023  $36,244  $40,595  $37,220  
Accretion of environmental liabilities2,766  2,560  5,327  5,134  
Depreciation and amortization72,494  74,217  147,027  149,572  
Other expense (income), net500  564  2,865  (2,419) 
Loss on sale of businesses184  —  3,258  —  
Interest expense, net of interest income18,654  20,215  37,441  39,979  
Provision for income taxes11,859  16,025  21,557  22,002  
Adjusted EBITDA$135,480  $149,825  $258,070  $251,488  
As a % of Direct revenues19.1 %17.2 %16.5 %15.2 %
Depreciation and Amortization
 For the Three Months Ended For the Nine Months Ended
 September 30, 2019 over 2018 September 30, 2019 over 2018
(in thousands, except percentages)2019 2018 $
Change
 %
Change
 2019 2018 
$
Change
 
%
Change
Depreciation of fixed assets and amortization of landfills and finance lease$65,335
 $64,938
 $397
 0.6% $196,729
 $194,729
 $2,000
 1.0%
Permits and other intangibles amortization8,421
 8,144
 277
 3.4
 26,599
 25,957
 642
 2.5
Total depreciation and amortization$73,756
 $73,082
 $674
 0.9% $223,328
 $220,686
 $2,642
 1.2%
For the Three Months EndedFor the Six Months Ended
June 30,2020 over 2019June 30,2020 over 2019
(in thousands, except percentages)20202019$
Change
%
Change
20202019$ Change% Change
Depreciation of fixed assets and amortization of landfills and finance leases$63,656  $65,523  $(1,867) (2.8)%$129,021  $131,394  $(2,373) (1.8)%
Permits and other intangibles amortization8,838  8,694  144  1.7  18,006  18,178  (172) (0.9) 
Total depreciation and amortization$72,494  $74,217  $(1,723) (2.3)%$147,027  $149,572  $(2,545) (1.7)%
Depreciation and amortization for the three and six months ended SeptemberJune 30, 2019 increased by $0.7 million2020 decreased from the comparable periodperiods in 20182019 primarily due to an increase in capital spending.
Depreciation and amortization for the nine months ended September 30, 2019 increased by $2.6 million from the comparable period in 2018 due to incremental depreciation from increased capital spending and acquisitions, partially offset by lower volumes at our landfills in 2019, which reduced landfill amortization.
Loss on Early Extinguishment of Debt
 For the Three Months Ended For the Nine Months Ended
 September 30, 2019 over 2018 September 30, 2019 over 2018
(in thousands, except percentages)2019 2018 
$
Change
 
%
Change
 2019 2018 
$
Change
 
%
Change
Loss on early extinguishment of debt$6,119
 $2,469
 $3,650
 147.8% $6,119
 $2,469
 $3,650
 147.8%
During the three and nine months ended September 30, 2019, we recorded a $6.1 million loss on early extinguishment of debt in connection with the extinguishment of the $845.0 million of unsecured senior notes due 2021 which were repaid during the current quarter using the funds from the issuance of $545.0 million of unsecured senior notes due 2027 and $300.0 million of unsecured senior notes due 2029 and some available cash. During the three and nine months ended September 30, 2018, we recorded a $2.5 million loss on early extinguishment of debt in connection with the extinguishment of $400.0 million of senior unsecured notes which were refinanced in connection with an Incremental Facility Amendment to our Term Loan Agreement during the third quarter of 2018. The losses on early extinguishment of debt consisted of amounts paid in excess of par in order to extinguish the debt prior to maturity of $2.7 million and $1.2 million for the 2019 and 2018 transactions, respectively, and non-cash expenses related to the write-off of unamortized financing costs of $3.4 million and $1.3 million for the 2019 and 2018 transactions, respectively. For additional information regarding our financing arrangements, see Note 11, "Financing Arrangements" to the accompanying unaudited consolidated financial statements.certain assets becoming fully depreciated.
Provision for Income Taxes
For the Three Months Ended For the Nine Months EndedFor the Three Months EndedFor the Six Months Ended
September 30, 2019 over 2018 September 30, 2019 over 2018June 30,2020 over 2019June 30,2020 over 2019
(in thousands, except percentages)2019 2018 $
Change
 %
Change
 2019 2018 
$
Change
 
%
Change
(in thousands, except percentages)20202019$
Change
%
Change
20202019$
Change
%
Change
Provision for income taxes$17,750
 $11,275
 $6,475
 57.4% $39,752
 $28,011
 $11,741
 41.9%Provision for income taxes$11,859  $16,025  $(4,166) (26.0)%$21,557  $22,002  $(445) (2.0)%
The provision for income taxes for the three and ninesix months ended SeptemberJune 30, 2019 increased $6.52020 decreased $4.2 million and $11.7$0.4 million, respectively, from the comparable periods in 2018.2019. The increasedecrease in the three and ninesix months ended SeptemberJune 30, 20192020 was primarily due to increaseddecreased taxable income in the United States. The increase in the three months ended September 30, 2019 as compared to the same period in 2018 was also driven by tax benefits recorded in the third quarter of 2018 resulting from filing amended returns for prior periods. Our effective tax rate for the three and ninesix months ended SeptemberJune 30, 20192020 was 32.8%29.0% and 35.1%34.7%, respectively, compared to 26.6%30.7% and 36.3%37.2%, respectively, for the same periods in 2018.2019.

29

For the ninesix months ended SeptemberJune 30, 2019,2020, we did not record $4.8an income tax benefit of $1.1 million associated with the loss on sale of businesses and $0.6 million of income tax benefits generated from losses at certain of our Canadian entities. This compares to $6.6$4.8 million of income tax benefits generated in the comparable period of 20182019 which also were not recorded in that period's income tax provision.

Liquidity and Capital Resources 
Nine Months EndedSix Months Ended
September 30,June 30,
(in thousands)2019 2018(in thousands)20202019
Net cash from operating activities$284,675
 $247,215
Net cash from operating activities$173,486  $138,470  
Net cash used in investing activities(187,109) (299,482)Net cash used in investing activities(141,685) (139,868) 
Net cash used in financing activities(44,132) (50,414)
Net cash from (used in) financing activitiesNet cash from (used in) financing activities47,017  (23,793) 
Net cash from operating activities
Net cash from operating activities for the ninesix months ended SeptemberJune 30, 20192020 was $284.7$173.5 million, an increase of $37.5$35.0 million from the comparable period in 2018.2019. The increase in operating cash flows from the comparable period of 20182019 was attributable to greater levelsdeferring the payment of operatingcertain payroll and income taxes amounting to approximately $25.0 million as allowed for under the CARES Act and improvements in working capital, partially offsetearlier issued guidance by increased environmental expenditures. We believe that net cash from operating activities for 2019 will continue to improve year-over-year as we continue to generate higher earnings.the Internal Revenue Service.
Net cash used in investing activities
Net cash used in investing activities for the ninesix months ended SeptemberJune 30, 20192020 was $187.1$141.7 million, a decreasean increase of $112.4$1.8 million from the comparable period in 2018. The change was primarily driven2019. Net cash used in investing activities increased most notably due to the timing of proceeds received from the purchase and sale of marketable securities in the comparative periods, offset by a decrease in cash paid for acquisitions, which was greater during the nine months ended September 30, 2018 dueacquisitions. As noted earlier, in response to the acquisition of the Veolia Business on February 23, 2018. This decrease was partially offset by increaseduncertainty surrounding COVID-19, we reduced our planned capital expenditure levels, netspending. As such, additions to property, plant and equipment between the two periods were relatively consistent despite the purchase of disposals, which we expect to be approximately $200.0 million by the end of 2019.our Norwell, Massachusetts corporate headquarters in January 2020.
Net cash used infrom (used in) financing activities
Net cash from financing activities for the six months ended June 30, 2020 was $47.0 million, compared to net cash used in financing activities of $23.8 million for the nine months ended September 30, 2019comparable period in 2019. On March 31, 2020, we borrowed $150.0 million under our revolving credit facility in response to the uncertainty surrounding the COVID-19 global pandemic. We subsequently repaid $75.0 million of this borrowing on June 29, 2020. This net financing cash inflow was $44.1 million, a decreasepartially offset by an increase in repurchases of $6.3common stock of $6.1 million from the comparable period in 2018. The change in net cash used in financing activities was primarily due to a decrease in repurchases of common stock, partially offset by an increase in deferred financing costs paid to issue the unsecured senior notes in 2019 as compared to the deferred financing costs paid as a result of the expansion of our Term Loan in 2018.2019. For additional information regarding our financing activities, see Note 11, "Financing Arrangements"Arrangements," to the accompanying unaudited consolidated financial statements.
Adjusted Free Cash Flow
Management considers adjusted free cash flow to be a measurement of liquidity which provides useful information to both management, creditors and investors about our financial strength and our ability to generate cash. Additionally, adjusted free cash flow is a metric on which a portion of management incentive compensation is based. We define adjusted free cash flow as net cash from operating activities, excludingless additions to property, plant and equipment plus proceeds from sales or disposals of fixed assets. We exclude cash impacts of items derived from non-operating activities such as taxes paid in connection with divestitures less additionsand in the current period have also excluded cash paid in connection with the purchase of our corporate headquarters and certain capital improvements to property, plant and equipment plus proceeds from sales or disposals of fixed assets.the site as these expenditures are considered one-time in nature. Adjusted free cash flow should not be considered an alternative to net cash from operating activities or other measurements under GAAP. Adjusted free cash flow is not calculated identically by all companies, and therefore our measurements of adjusted free cash flow may not be comparable to similarly titled measures reported by other companies.
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The following is a reconciliation of net cash from operating activities to adjusted free cash flow for the following periods (in thousands):
Nine Months EndedSix Months Ended
September 30, June 30,
2019 2018 20202019
Net cash from operating activities$284,675
 $247,215
Net cash from operating activities$173,486  $138,470  
Additions to property, plant and equipment(174,533) (150,722)Additions to property, plant and equipment(125,721) (118,372) 
Purchase and capital improvements of corporate headquartersPurchase and capital improvements of corporate headquarters21,080  —  
Proceeds from sale and disposal of fixed assets8,948
 6,111
Proceeds from sale and disposal of fixed assets3,101  7,389  
Adjusted free cash flow$119,090
 $102,604
Adjusted free cash flow$71,946  $27,487  
Working Capital
At SeptemberJune 30, 2019,2020, cash and cash equivalents and marketable securities totaled $329.1$506.7 million, compared to $279.4$414.4 million at December 31, 2018.2019. At SeptemberJune 30, 2019,2020, cash and cash equivalents held by our foreign subsidiaries totaled $68.1$99.6 million and were readily convertible into other currencies including U.S. dollars. At SeptemberJune 30, 2019,2020, the cash and cash equivalents and marketable securities balance for our U.S. operations was $261.0$407.1 million, and our U.S. operations had net operating cash flows of $276.0$125.1 million for the ninesix months ended SeptemberJune 30, 2019.2020. Additionally, we have a $400.0 million revolving credit facility of which approximately $231.1$135.3 million was available to borrow at SeptemberJune 30, 2019.2020. Based on the above and on our current plans, we believe that our U.S. operations have and will continue to have adequate financial resources to satisfy their current liquidity needs.
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 internal investing cash needs as well as any cash needs relating to our stock repurchase program. Furthermore, our existing cash balance and the availability of additional borrowings under our revolving credit facility provide additional potential sources of liquidity should they be required.
Financing Arrangements 
Financing arrangements are discussed in Note 11, “Financing Arrangements,” to our unaudited consolidated financial statements included in this report. As discussed therein, we refinancedthe Company maintains a portion of our debt portfolio$400.0 million revolving credit facility expiring on November 1, 2021. On March 31, 2020, the Company drew down $150.0 million on the revolving credit facility in July 2019 wherebyresponse to the $845.0uncertainty surrounding the COVID-19 global pandemic. The Company repaid $75.0 million of previouslythat borrowing on June 29, 2020, and the remaining $75.0 million was repaid on July 28, 2020. The Company had $135.3 million available to borrow and outstanding 5.125% unsecured senior notes due 2021letters of credit were replaced by $545.0$142.5 million at June 30, 2020. At December 31, 2019, $229.2 million was available to borrow and outstanding letters of 4.875% unsecured senior notes due 2027 and $300.0 million of 5.125% unsecured senior notes due 2029.credit were $146.9 million. We continue to monitor our debt instruments and evaluate opportunities where it may be beneficial to refinance or reallocate the portfolio.
As of SeptemberJune 30, 2019,2020, we were in compliance with the covenants of all our debt agreements, and we believe it is reasonably likely that we will continue to meet such covenants.
Common Stock Repurchases Pursuant to Publicly Announced Plan
The Company's common stock repurchases are made pursuant to the previously authorized board approved plan to repurchase up to $600.0 million of the Company's common stock. During the three months ended June 30, 2020, the Company did not repurchase any shares of its common stock. During the six months ended June 30, 2020, the Company repurchased and retired a total of approximately 0.3 million shares of the Company's common stock for total costs of approximately $17.3 million. During the three and six months ended June 30, 2019, the Company repurchased and retired a total of approximately 0.1 million and 0.2 million shares, respectively, of the Company's common stock for total costs of approximately $4.9 million and $11.3 million, respectively.
Through June 30, 2020, the Company has repurchased and retired a total of approximately 6.2 million shares of its common stock for approximately $332.7 million under this program. As of June 30, 2020, an additional $267.3 million remained available for repurchase of shares under this program.
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Environmental Liabilities
(in thousands, except percentages)September 30, 2019 December 31, 2018 $ Change % Change(in thousands, except percentages)June 30, 2020December 31, 2019$ Change% Change
Closure and post-closure liabilities$74,159
 $69,931
 $4,228
 6.0 %Closure and post-closure liabilities$82,641  $75,651  $6,990  9.2 %
Remedial liabilities117,269
 121,017
 (3,748) (3.1)Remedial liabilities112,483  114,173  (1,690) (1.5) 
Total environmental liabilities$191,428
 $190,948
 $480
 0.3 %Total environmental liabilities$195,124  $189,824  $5,300  2.8 %
Total environmental liabilities as of SeptemberJune 30, 20192020 were $191.4$195.1 million, an increase of $0.5$5.3 million compared to December 31, 20182019 primarily due to a $4.5 million increase in the closure and post-closure liabilities associated with one commercial landfill for which the Company has initiated closure plans and a $1.8 million increase to the estimated remedial liabilities for a Superfund site due to the receipt of updated regulatory approval requirements for remediation. The remaining change is resulting from accretion of $7.6 million, changes in environmental liability estimates recorded to the balance sheet of $3.8 million and new asset retirement obligations and liabilities assumed in acquisitions of $1.9$5.3 million, partially offset by expenditures of $12.8$6.1 million.
We anticipate our environmental liabilities, substantially all of which we assumed in connection with our acquisitions, 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. 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.
Capital Expenditures
Capital expenditures in the first six months of 2020 were $125.7 million as compared to $118.4 million in the same period of 2019. The increase was primarily due to the purchase of our corporate headquarters in January 2020 offset by planned reductions in spending in response to the uncertainty surrounding COVID-19. We anticipate that 20192020 capital spending, net of disposals, will be in the range of $190.0$176.0 million to $210.0 million.$196.0 million, inclusive of the $21.1 million already spent on the purchase and capital improvements of our corporate headquarters. However, unanticipated changes in environmental regulations could require us to make significant capital expenditures for our facilities and adversely affect our results of operations and cash flow.
Critical Accounting Policies and Estimates
ThereOther than as described below, there were no material changes in the first ninesix months of 20192020 to the information provided under the heading “Critical Accounting Policies and Estimates” included in our Annual Report on Form 10-K for the year ended December 31, 2018. New accounting policies adopted2019.
Goodwill and Other Long-Lived Assets. Goodwill is reviewed for impairment annually as of December 31 or when events or changes in the business environment (triggering events) indicate the carrying value of a reporting unit may exceed its fair value. This review is performed by comparing the fair value of each reporting unit to its carrying value, including goodwill. If the fair value is less than the carrying amount, a loss is recorded for the excess of the carrying value over the fair value up to the carrying amount of goodwill.
We determine our reporting units by identifying the components of each operating segment, and then in some circumstances aggregate components having similar economic characteristics based on quantitative and/or qualitative factors. As of June 30, 2020 and December 31, 2019, we continue to have four reporting units, consisting of Environmental Sales and Service, Environmental Facilities, Safety-Kleen Oil and Safety-Kleen Environmental Services.
We conducted our annual impairment test of goodwill for all of our reporting units to which goodwill was allocated as of December 31, 2019 and determined that no adjustment to the carrying value of goodwill for any reporting unit was then necessary. In all cases the estimated fair value of each reporting unit significantly exceeded its carrying value.
Our long-lived assets are carried on our financial statements based on their cost less accumulated depreciation or amortization. Long-lived assets with finite lives are reviewed for impairment whenever events or changes in circumstances ("triggering events") indicate that their carrying value may not be entirely recoverable. When such factors and circumstances exist, management compares the projected undiscounted future cash flows associated with the related asset or group of assets to the respective carrying amounts. The impairment loss, if any, would be measured as the excess of the carrying amount over the fair value of the asset and is recorded in the period in which the determination is made.
During the three month periods ended March 31, 2020 and June 30, 2020, we considered the actual and expected future impacts of COVID-19 and the overall decline in oil demand and pricing, partially driven by the global response to COVID-19, and concluded that no triggering event had occurred. This conclusion was based on a qualitative analysis incorporating (i) the significant excess fair value that previously existed in each reporting unit (ii) assessing the actual operations of the Company during the quartersix
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months ended June 30, 2020 and (iii) assessing the current and long-term performance of the Company given expectations that the effects on the operations and cash flows of each reporting unit arising from these disruptions will be short lived.
We will continue to evaluate our goodwill and other long-lived assets impacted by economic downturns. The market conditions which could lead to such future impairments are describedcurrently most prevalent for assets supporting our oil and gas field services and lodging services operations within the Environmental Sales & Services reporting unit and goodwill associated with our Safety-Kleen Oil reporting unit.
Our assumptions with respect to future cash flows and conclusions with respect to asset impairments could be impacted by changes arising from (i) a further significant deterioration in Note 2, "Significant Accounting Policies,"market conditions arising from COVID-19, (ii) a sustained period of economic and industrial slowdowns resulting from social distancing guidelines, (iii) continued reduced demand for base and blended oil products and an inability to price our unaudited consolidatedoil related products and services to maintain profitability, (iv) inability to scale our operations and implement cost reduction efforts in light of reduced demand or (v) a further decline in our share price for a sustained period of time. These factors, among others, could significantly impact the impairment analysis and may result in future goodwill or asset impairment charges that, if incurred, could have a material adverse effect on our financial statements included in this report.condition and results of operations.

ITEM 3.QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK 
ThereOther than the draw down on March 31, 2020, of $150.0 million from our available borrowings under our revolving credit facility, of which $75.0 million was subsequently repaid on June 29, 2020 and the remaining $75.0 million was repaid on July 28, 2020, there were no material changes in the first ninesix months of 20192020 to the information provided under Item 7A. “Quantitative and Qualitative Disclosures about Market Risk” in the Company's Annual Report on Form 10-K for the year ended December 31, 2018.2019. The revolving credit facility will expire on November 1, 2021, at which point, the amount of then outstanding borrowings will be due. However, the Company can repay the borrowings without penalty (other than customary LIBOR breakage fees) at any point. Interest on the credit facility is based on one-month LIBOR, and as of June 30, 2020, the effective interest rate on the remaining $75.0 million outstanding under our revolving credit facility was 1.44%. Interest payments are due monthly until the borrowing is repaid.
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ITEM 4.CONTROLS AND PROCEDURES
Evaluation of Disclosure Controls and Procedures
Based on an evaluation under the supervision and with the participation of our Chief Executive Officer and Chief Financial Officer, as of the end of the period covered by this Quarterly Report on Form 10-Q, our Chief Executive Officer and Chief Financial Officer have concluded that our disclosure controls and procedures (as defined under Rule 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)) were effective as of SeptemberJune 30, 20192020 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 quartersix months ended SeptemberJune 30, 20192020 that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting. As a result of the COVID-19 pandemic, certain employees of the Company began working remotely in March 2020, and some continued to work remotely through June 30, 2020. These changes to the working environment did not have a material effect on the Company’s internal control over financial reporting. We will continue to monitor the impact of COVID-19 on our internal control over financial reporting.


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CLEAN HARBORS, INC. AND SUBSIDIARIES
PART II—OTHER INFORMATION
ITEM 1.LEGAL PROCEEDINGS
See Note 16, “Commitments and Contingencies,” to the unaudited consolidated financial statements included in Item 1 of this report, which description is incorporated herein by reference.
ITEM 1A.  RISK FACTORS
DuringExcept as set forth below, during the ninesix months ended SeptemberJune 30, 2019,2020, there were no material changes from the risk factors as previously disclosed in Item 1A in the Company's Annual Report on Form 10-K for the year ended December 31, 2018.2019 other than the update described below.
Natural disasters or other catastrophic events, including pandemics, could negatively affect our business, financial condition and results of operations.

Natural disasters such as hurricanes, tornados or earthquakes or other catastrophic events including public health threats or outbreaks of communicable diseases including the recent novel coronavirus pandemic could negatively affect our operations and financial performance. The impact of such events could include physical damage to one or more of our facilities or equipment, the temporary lack of an adequate workforce in a market and the temporary disruption in rail or truck transportation services upon which we rely. These events could prevent or delay shipments from suppliers or to customers and reduce both volumes and revenue. Weather conditions and other event driven special projects also cause interim variations in our results. These events could adversely impact the ability of the Company's suppliers and customers to conduct business activities and could ultimately do so for an indefinite period of time. As a result, we may be required to suspend operations in some or all of our locations, which could have a material adverse effect on our business, financial condition and results of operations.

ITEM 2.  UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS
Common Stock Repurchase Program
The following table provides information with respect to the shares of common stock repurchased by us for the periods indicated.
Period
Total Number of Shares Purchased (1)
 
Average Price Paid Per Share (2)
 Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs 
Approximate Dollar Value of Shares that May Yet Be Purchased Under the Plans or Programs (3)
July 1, 2019 through July 31, 20191,071
 $70.53
 
 $294,800,437
August 1, 2019 through August 31, 201933,857
 74.79
 30,000
 292,561,400
September 1, 2019 through September 30, 201940,132
 75.62
 38,000
 289,683,588
Total75,060
 $75.17
 68,000
  
Period
Total Number of Shares Purchased (1)
Average Price Paid Per Share (2)
Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs
Approximate Dollar Value of Shares that May Yet Be Purchased Under the Plans or Programs
(in thousands) (3)
April 1, 2020 through April 30, 202014,337  $45.91  —  $267,346  
May 1, 2020 through May 31, 2020217  51.62  —  267,346  
June 1, 2020 through June 30, 20207,929  60.78  —  267,346  
Total22,483  $51.21  —  
________________
(1) Includes 22,483 shares withheld by us from employees to satisfy employee tax obligations upon vesting of restricted stock granted to our employees under the Company's equity incentive plans.
(2) The average price paid per share of common stock repurchased under the stock repurchase program includes the commissions paid to brokers.
(3) Our board of directors has authorized the repurchase of up to $600.0 million of our common stock. We have funded and intend to fund the repurchases through available cash resources. The stock repurchase program authorizes us to purchase our common stock on the open market or in privately negotiated transactions periodically in a manner that complies with applicable U.S. securities laws. The number of shares purchased and the timing of the purchases has depended and will depend on several factors, including share price, cash required for business plans, trading volume and other conditions. During April 2018, we implemented a repurchase plan in accordance with Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended. Future repurchases will be made under the Rule 10b5-1 plan as well as open market or privately negotiated transactions as described above. We have no obligation to repurchase stock under this program and may suspend or terminate the repurchase program at any time.
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________________Table of Contents
(1)Includes 7,060 shares withheld by us from employees to satisfy employee tax obligations upon vesting of restricted stock units granted to our employees under the Company's equity incentive plans.
(2)The average price paid per share of common stock repurchased under the stock repurchase program includes the commissions paid to brokers.
(3)Our board of directors has authorized the repurchase of up to $600.0 million of our common stock. We have funded and intend to fund the repurchases through available cash resources. The stock repurchase program authorizes us to purchase our common stock on the open market or in privately negotiated transactions periodically in a manner that complies with applicable U.S. securities laws. The number of shares purchased and the timing of the purchases has depended and will depend on several factors, including share price, cash required for business plans, trading volume and other conditions. During April 2018, we implemented a repurchase plan in accordance with Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended. Future repurchases will be made under the Rule 10b5-1 plan as well as open market or privately negotiated transactions as described above. We have no obligation to repurchase stock under this program and may suspend or terminate the repurchase program at any time.

ITEM 3.  DEFAULTS UPON SENIOR SECURITIES
None
ITEM 4.MINE SAFETY DISCLOSURE
Not applicable
ITEM 5. OTHER INFORMATION
None

ITEM 6.EXHIBITS
Item No.DescriptionLocation
31.1Filed herewith
31.2Filed herewith
32Filed herewith
101Interactive 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 SeptemberJune 30, 2019,2020, formatted in iXBRL (Inline eXtensible Business Reporting Language): (i) Consolidated Balance Sheets, (ii) Unaudited Consolidated Statements of Operations, (iii) Unaudited Consolidated Statements of Comprehensive Income (Loss), (iv) Unaudited Consolidated Statements of Cash Flows, (v) Unaudited Consolidated Statements of Stockholders’ Equity and (vi) Notes to Unaudited Consolidated Financial Statements.*
104The cover page from the Company's Quarterly Report on Form 10-Q for the quarter ended SeptemberJune 30, 2019,2020, formatted in iXBRL and contained in Exhibit 101.
_______________________
*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.

_______________________
* 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.
36

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
Chairman, President and Chief Executive Officer
Date:October 30, 2019August 5, 2020
By:/s/ MICHAEL L. BATTLES
Michael L. Battles
Executive Vice President and Chief Financial Officer
Date:October 30, 2019August 5, 2020


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