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CLOSURE AND POST-CLOSURE LIABILITIES
6 Months Ended
Jun. 30, 2014
Asset Retirement Obligation Disclosure [Abstract]  
CLOSURE AND POST-CLOSURE LIABILITIES
CLOSURE AND POST-CLOSURE LIABILITIES
The changes to closure and post-closure liabilities (also referred to as “asset retirement obligations”) for the six months ended June 30, 2014 were as follows (in thousands):
 
Landfill
Retirement
Liability
 
Non-Landfill
Retirement
Liability
 
Total
Balance at January 1, 2014
$
27,604

 
$
19,481

 
$
47,085

New asset retirement obligations
1,914

 

 
1,914

Accretion
1,278

 
921

 
2,199

Changes in estimates recorded to statement of income
(142
)
 
238

 
96

Changes in estimates recorded to balance sheet
363

 

 
363

Expenditures
(1,322
)
 
(444
)
 
(1,766
)
Currency translation and other
1

 
(10
)
 
(9
)
Balance at June 30, 2014
$
29,696

 
$
20,186

 
$
49,882


All of the landfill facilities included in the above were active as of June 30, 2014. New asset retirement obligations incurred during the first six months of 2014 were discounted at the credit-adjusted risk-free rate of 6.54%. There were no significant charges (benefits) in 2014 resulting from changes in estimates for closure and post-closure liabilities.