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CLEAN HARBORS INC

For the period ended Dec 31, 2024. Filed Feb 19, 2025.

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FY2024 · Filed Feb 19, 2025

CLH$287.60+1.2%Stored close · as of Nov 9, 2026

Extracted filing text, with the paragraph anchors used by the comparison.

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(11) Remedial Liabilities

The changes toremedial liabilities from January 1, 2023 through December 31, 2024 were as follows (in thousands):

RemedialLiabilities forLandfill SitesRemedialLiabilities forInactive SitesRemedialLiabilities(IncludingSuperfund) forNon-LandfillOperationsTotal
Balance at January 1, 2023$1,824$59,749$54,717$116,290
Accretion892,5401,5614,190
Changes in estimates recorded to consolidated statement of operations191,7131,8963,628
Environmental expenditures(52)(3,840)(9,384)(13,276)
Currency translation and other—115296411
Balance at December 31, 20231,88060,27749,086111,243
Liabilities assumed in acquisitions——5,1925,192
Accretion922,2921,5143,898
Changes in estimates recorded to consolidated statement of operations295733,7624,364
Expenditures(53)(6,078)(5,715)(11,846)
Currency translation and other—(28)(1,078)(1,106)
Balance at December 31, 2024$1,948$57,036$52,761$111,745

In the year ended December 31, 2024, the Company increased its remedial liabilities for an existing Superfund site by $2.9 million related to new information on the ultimate remediation of this site.

Anticipated payments at December 31, 2024 (based on current estimated costs and anticipated timing of necessary regulatory approvals to commence work on remedial activities) for each of the next five years and thereafter were as follows (in thousands):

Years ending December 31,
2025$10,321
202617,391
202711,259
202810,972
20298,745
Thereafter70,610
Undiscounted remedial liabilities129,298
Less: Discount at risk free rates(17,553)
Total remedial liabilities$111,745

The following table presents the Company's estimated remedial liabilities and reasonably possible additional liabilities as of December 31, 2024 disaggregated by facility/site type (in thousands, except percentages):

Type of Facility or SiteRemedialLiabilities% of TotalReasonably PossibleAdditional Liabilities (1)
Inactive facilities not used in active conduct of the Company's business, most of which were assumed through prior period acquisitions (25 facilities)$56,97651.0%$10,765
Facilities now used in active conduct of the Company's business (62 facilities, including 24 acquired by the Company through acquisitions in 2024)46,13141.39,497
Superfund sites (12 sites)8,6387.71,296
Total$111,745100.0%$21,558

(1)Amounts represent the high end of the range of management's best estimate of the reasonably possible additional liabilities.

The following table presents the Company's estimated remedial liabilities and reasonably possible additional liabilities as of December 31, 2024 disaggregated by facilities/sites which represent at least 5% of the total and with all other facilities/ sites combined (in thousands, except percentages):

LocationType of Facility or SiteRemedialLiabilities(1)% of TotalReasonablyPossibleAdditionalLiabilities(2)
Baton Rouge, LAClosed incinerator and landfill$25,57822.9%$4,303
Bridgeport, NJClosed incinerator17,41715.63,254
Mercier, QuebecIdled incinerator10,8269.71,631
Linden, NJOperating solvent recycling center9,4348.42,148
VariousAll other incinerators, landfills, wastewater treatment facilities and service centers (83 facilities, including 24 acquired by the Company through acquisitions in 2024)39,85235.78,926
VariousSuperfund sites (each representing less than 5% of total liabilities) (12 sites)8,6387.71,296
Total$111,745100.0%$21,558

(1)$23.3 million of the $111.7 million remedial liabilities include estimates related to the legal and administrative proceedings discussed in Note 18, "Commitments and Contingencies."

(2)Amounts represent the high end of the range of management's best estimate of the reasonably possible additional liabilities.

Revisions to remediation reserve requirements may result in upward or downward adjustments to income from operations in any given period. The Company believes that its extensive experience in the environmental services business, as well as its involvement with a large number of sites, provides a reasonable basis for estimating its aggregate liability. It is possible, however, that future changes in available technology, regulatory or enforcement developments, the results of environmental studies or other factors could necessitate the recording of additional liabilities or the revision of currently recorded liabilities that could be material. Since the Company's satisfaction of the liabilities will occur over many years, the Company cannot reasonably predict the nature or extent of possible future events or the impact that those events, if any, might have on the current estimates of remedial liabilities.

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