COMMITMENTS AND CONTINGENCIES (Tables)

9 Months Ended

Sep. 30, 2019

Southbridge Landfill

Site Contingency [Line Items]

Summary of Environmental Liability

The changes to the environmental remediation liability associated with the Southbridge Landfill are as follows:

	Nine Months Ended September 30,
	2019		2018
Beginning balance	$	5,173	$	5,936
Accretion expense	94		116
Obligations settled (1)	(556)		(612)
Ending balance	$	4,711	$	5,440

(1)Includes amounts that are being processed through accounts payable as a part of our disbursements cycle.

Potsdam Environmental Remediation

Site Contingency [Line Items]

Summary of Environmental Liability

A summary of the changes to the environmental remediation liability associated with the Potsdam environmental remediation liability follows:

	Nine Months Ended September 30,
	2019		2018
Beginning balance	$	5,614	$	5,758
Obligations settled (1)	(1,764)		(98)
Ending balance	$	3,850	$	5,660

(1)Includes amounts that are being processed through accounts payable as a part of our disbursements cycle.