CLOSURE AND POST-CLOSURE LIABILITIES |
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Jun. 30, 2015 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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, 2015 were as follows (in thousands):
All of the landfill facilities included in the above were active as of June 30, 2015. New asset retirement obligations incurred during the first six months of 2015 were discounted at the credit-adjusted risk-free rate of 5.99%. There were no significant charges (benefits) in 2015 resulting from changes in estimates for closure and post-closure liabilities. |