REMEDIAL LIABILITIES

12 Months Ended

Dec. 31, 2025

Environmental Remediation Obligations [Abstract]

The changes to remedial liabilities from January 1, 2024 through December 31, 2025 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, 2024	$	1,880	$	60,277	$	49,086	$	111,243
Liabilities assumed in acquisitions	—		—		5,192		5,192

Accretion	92		2,292		1,514		3,898
Changes in estimates recorded to consolidated statement of operations	29		573		3,762		4,364
Environmental 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

Measurement period adjustments from prior period acquisition	—		—		(90)		(90)
Accretion	93		2,353		1,315		3,761
Changes in estimates recorded to consolidated statement of operations	(66)		(860)		(9,296)		(10,222)
Environmental expenditures	(47)		(4,163)		(5,724)		(9,934)
Currency translation and other	—		157		(48)		109
Balance at December 31, 2025	$	1,928	$	54,523	$	38,918	$	95,369

In the year ended December 31, 2025, the Company decreased its remedial liability for a site by approximately $10 million due to its conclusion that loss was no longer probable based on the evaluation of available evidence.

Anticipated payments at December 31, 2025 (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,
2026	$	8,822
2027	12,819
2028	8,696
2029	8,930
2030	6,916
Thereafter	84,266
Undiscounted remedial liabilities	130,449
Less: Discount at risk free rate	(35,080)
Total remedial liabilities	$	95,369

The following table presents the Company's estimated remedial liabilities and reasonably possible additional liabilities as of December 31, 2025 disaggregated by facility/site type (in thousands, except percentages):


Type of Facility or Site	Remedial Liabilities		% of Total		Reasonably Possible Additional Liabilities (1)
Inactive facilities not used in active conduct of the Company's business, most of which were assumed through prior period acquisitions (28 facilities)	$	54,476	57.1	%	$	10,164
Facilities now used in active conduct of the Company's business (58 facilities)	33,425		35.1		7,267
Superfund sites (13 sites)	7,468		7.8		1,120
Total	$	95,369	100.0	%	$	18,551

___________________________________

(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, 2025 disaggregated by facilities/sites which represent at least 5% of the total and with all other facilities/ sites combined (in thousands, except percentages):


Location	Type of Facility or Site	Remedial Liabilities(1)		% of Total		Reasonably Possible Additional Liabilities(2)
Baton Rouge, LA	Closed incinerator and landfill	$	24,558	25.8	%	$	3,751
Bridgeport, NJ	Closed incinerator	16,866		17.7		3,586

Linden, NJ	Operating solvent recycling center	8,645		9.1		1,954
Various	All other incinerators, landfills, wastewater treatment facilities and service centers (83 facilities)	37,832		39.6		8,140
Various	Superfund sites (each representing less than 5% of total liabilities) (13 sites)	7,468		7.8		1,120
Total		$	95,369	100.0	%	$	18,551

_________________________________

(1)$11.4 million of the $95.4 million remedial liabilities include estimates related to the legal and administrative proceedings discussed in Note 17, “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.

- Definition

The entire disclosure for environmental loss contingencies, such as presence of hazardous waste, relevant information from reports issued by regulators, and estimated costs to achieve compliance with regulatory requirements. This element may be used for all of an entity's disclosures about environmental loss contingencies.

+ References

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-URI https://asc.fasb.org/1943274/2147481899/410-30-55-17

+ Details

CLEAN HARBORS INC 10-K