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CLOSURE AND POST-CLOSURE LIABILITIES
9 Months Ended
Sep. 30, 2016
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”) from January 1, 2016 through September 30, 2016 were as follows (in thousands):
 
Landfill
Retirement
Liability
 
Non-Landfill
Retirement
Liability
 
Total
Balance at January 1, 2016
$
32,023

 
$
24,226

 
$
56,249

Liabilities assumed in acquisitions

 
2,408

 
2,408

Adjustments during the measurement period related to 2015 acquisitions

 
657

 
657

New asset retirement obligations
1,650

 

 
1,650

Accretion
1,996

 
1,748

 
3,744

Changes in estimates recorded to statement of operations
(597
)
 
(114
)
 
(711
)
Expenditures
(904
)
 
(709
)
 
(1,613
)
Currency translation and other
130

 
53

 
183

Balance at September 30, 2016
$
34,298

 
$
28,269

 
$
62,567


All of the landfill facilities included in the above were active as of September 30, 2016. There were no significant charges (benefits) in 2016 resulting from changes in estimates for closure and post-closure liabilities.
New asset retirement obligations incurred during the first nine months of 2016 were discounted at the credit-adjusted risk-free rate of 6.23%.