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REMEDIAL LIABILITIES
6 Months Ended
Jun. 30, 2020
Environmental Remediation Obligations [Abstract]  
REMEDIAL LIABILITIES REMEDIAL LIABILITIES 
The changes to remedial liabilities from January 1, 2020 through June 30, 2020 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, 2020$1,851  $61,991  $50,331  $114,173  
Accretion44  1,265  842  2,151  
Changes in estimates recorded to statement of operations(14) (330) 1,484  1,140  
Expenditures(30) (2,171) (2,158) (4,359) 
Currency translation and other—  (923) 301  (622) 
Balance at June 30, 2020$1,851  $59,832  $50,800  $112,483  
In the six months ended June 30, 2020, the Company increased its remedial liabilities for a Superfund site by $1.8 million due to a change in the estimate of the related liabilities. This change in estimate was triggered by the receipt of updated regulatory approval requirements for remediation. Other than this charge, there were no significant charges (benefits) resulting from changes in estimates for remedial liabilities.