REMEDIAL LIABILITIES (Tables)

12 Months Ended

Dec. 31, 2017

Environmental Remediation Obligations [Abstract]

The changes to remedial liabilities from January 1, 2016 through December 31, 2017 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, 2016	$	2,327		$	63,613		$	66,052		$	131,992
Liabilities assumed in acquisitions	—			—			2,041			2,041
Accretion	110			2,737			2,227			5,074
Changes in estimates recorded to statement of operations	(538		)	1,520			(2,617		)	(1,635		)
Expenditures	(122		)	(3,893		)	(5,907		)	(9,922		)
Currency translation and other	—			174			283			457
Balance at December 31, 2016	1,777			64,151			62,079			128,007
Measurement period adjustments from prior period acquisitions	—			—			504			504
Accretion	86			2,648			1,978			4,712
Changes in estimates recorded to statement of operations	(21		)	(289		)	355			45
Expenditures	(42		)	(3,906		)	(5,792		)	(9,740		)
Currency translation and other	—			2,738			(1,798		)	940
Balance at December 31, 2017	$	1,800		$	65,342		$	57,326		$	124,468

Remedial Liabilities Anticipated Payments for Each of the Next Five Years

Anticipated payments at December 31, 2017 (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):



Year ending December 31,
2018	$	14,507
2019	16,934
2020	15,259
2021	10,212
2022	7,566
Thereafter	83,767
Undiscounted remedial liabilities	148,245
Less: Discount	(23,777		)
Total remedial liabilities	$	124,468

Environmental Exit Costs by Cost

The following tables show, respectively, (i) the amounts of such estimated liabilities associated with the types of facilities and sites involved and (ii) the amounts of such estimated liabilities associated with each facility or site which represents at least 5% of the total and with all other facilities and sites as a group and as of December 31, 2017.

(10) REMEDIAL LIABILITIES (Continued)

Estimates Based on Type of Facility or Site (in thousands):



Type of Facility or Site	Remedial Liability		% of Total		Reasonably Possible Additional Liabilities(1)
Facilities now used in active conduct of the Company's business (44 facilities)	$	54,193	43.5	%	$	11,747
Inactive facilities not now used in active conduct of the Company's business but most of which were acquired because the assumption of remedial liabilities for such facilities was part of the purchase price for the CSD assets (38 facilities)	62,706		50.4		10,549
Superfund sites owned by third parties (16 sites)	7,569		6.1		757
Total	$	124,468	100.0	%	$	23,053

___________________________________


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

Estimates Based on Amount of Potential Liability (in thousands):



Location	Type of Facility or Site	Remedial Liability		% of Total		Reasonably Possible Additional Liabilities(1)
Baton Rouge, LA(2)	Closed incinerator and landfill	$	23,357	18.8	%	$	3,938
Bridgeport, NJ	Closed incinerator	18,394		14.8		2,534
Mercier, Quebec(2)	Idled incinerator and legal proceedings	10,414		8.4		1,105
Linden, NJ	Operating solvent recycling center	7,678		6.2		825
Various(2)	All other incinerators, landfills, wastewater treatment facilities and service centers (78 facilities)	57,056		45.7		13,894
Various(2)	Superfund sites (each representing less than 5% of total liabilities) owned by third parties (16 sites)	7,569		6.1		757
Total		$	124,468	100.0	%	$	23,053

_________________________________


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


(2)	$17.9 million of the $124.5 million remedial liabilities and $1.8 million of the $23.1 million reasonably possible additional liabilities include estimates of remediation liabilities related to the legal and administrative proceedings discussed in Note 17, "Commitments and Contingencies," as well as other such estimated remedial liabilities.