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REMEDIAL LIABILITIES
 6 Months Ended
Jun. 30, 2024
Environmental Remediation Obligations [Abstract]  
REMEDIAL LIABILITIES REMEDIAL LIABILITIES 
The changes to remedial liabilities from January 1, 2024 through June 30, 2024 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 
Accretion44 1,134 743 1,921 
Changes in estimates recorded to consolidated statement of operations15 713 3,417 4,145 
Expenditures(26)(1,801)(3,443)(5,270)
Currency translation and other— (9)(431)(440)
Balance at June 30, 2024$1,913 $60,314 $49,372 $111,599 
In the six months ended June 30, 2024, changes in estimates for remedial liabilities included a $2.9 million reserve increase related to new information on the ultimate remediation of an existing Superfund site.