REMEDIAL LIABILITIES (Tables)

12 Months Ended

Dec. 31, 2022

Environmental Remediation Obligations [Abstract]

Schedule of Changes to Remedial Liabilities

The changes to remedial liabilities from January 1, 2021 through December 31, 2022 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, 2021	$	1,865	$	63,060	$	49,888	$	114,813
Liabilities assumed in acquisitions	—		—		1,216		1,216
Accretion	90		2,614		1,684		4,388
Changes in estimates recorded to consolidated statement of operations	(126)		(178)		600		296
Expenditures	(49)		(4,889)		(3,966)		(8,904)
Currency translation and other	—		(820)		884		64
Balance at December 31, 2021	1,780		59,787		50,306		111,873
Liabilities assumed in acquisition of real estate	—		—		8,092		8,092
Measurement period adjustments from prior period acquisition	—		—		338		338
Accretion	86		2,498		1,607		4,191
Changes in estimates recorded to consolidated statement of operations	8		877		612		1,497
Expenditures	(50)		(3,370)		(5,375)		(8,795)
Currency translation and other	—		(43)		(863)		(906)
Balance at December 31, 2022	$	1,824	$	59,749	$	54,717	$	116,290

Schedule of Remedial Liabilities Anticipated Payments for Each of the Next Five Years

Anticipated payments at December 31, 2022 (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,
2023	$	10,793
2024	20,912
2025	12,065
2026	7,581
2027	6,390
Thereafter	76,416
Undiscounted remedial liabilities	134,157
Less: Discount at risk free rates	(17,867)
Total remedial liabilities	$	116,290

Schedule of Environmental Exit Costs by Cost

The following table presents the Company's estimated remedial liabilities and reasonably possible additional liabilities as of December 31, 2022 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 (25 facilities)	$	59,759	51.4	%	$	10,295
Facilities now used in active conduct of the Company's business (45 facilities)	47,951		41.2		11,189
Superfund sites (16 sites)	8,580		7.4		1,288
Total	$	116,290	100.0	%	$	22,772

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(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, 2022 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	$	26,604	22.9	%	$	4,547
Bridgeport, NJ	Closed incinerator	18,089		15.6		3,364
Linden, NJ	Operating solvent recycling center	14,479		12.5		3,352
Mercier, Quebec	Idled incinerator	10,996		9.5		1,659
Various	All other incinerators, landfills, wastewater treatment facilities and service centers (66 facilities)	37,542		32.1		8,562
Various	Superfund sites (each representing less than 5% of total liabilities) (16 sites)	8,580		7.4		1,288
Total		$	116,290	100.0	%	$	22,772

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(1)$24.1 million of the $116.3 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.