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REMEDIAL LIABILITIES
 6 Months Ended
Jun. 30, 2015
Environmental Remediation Obligations [Abstract]  
REMEDIAL LIABILITIES
REMEDIAL LIABILITIES 
The changes to remedial liabilities for the six months ended June 30, 2015 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, 2015
$
5,420

 
$
68,528

 
$
81,173

 
$
155,121

Accretion
126

 
1,447

 
1,319

 
2,892

Changes in estimates recorded to statement of income
(122
)
 
51

 
873

 
802

Expenditures
(80
)
 
(2,374
)
 
(6,012
)
 
(8,466
)
Currency translation and other
(185
)
 
(55
)
 
(1,332
)
 
(1,572
)
Balance at June 30, 2015
$
5,159

 
$
67,597

 
$
76,021

 
$
148,777


In the six months ended June 30, 2015, there were no significant charges (benefits) resulting from changes in estimates for remedial liabilities.