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ACCRUED FINAL CAPPING, CLOSURE AND POST CLOSURE (Tables) | 6 Months Ended
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Jun. 30, 2022
Asset Retirement Obligation Disclosure [Abstract] |
Summary of Changes to Accrued Capping, Closure and Post-Closure Liabilities | A summary of the changes to accrued final capping, closure and post-closure liabilities follows:
| Six Months Ended June 30,
| 2022 |  | 2021
Beginning balance | $ | 86,914 |  |  | $ | 82,533 |
Obligations incurred | 2,244 |  |  | 2,319 |
Revision in estimates (1) | 1,443 |  |  | — |
Accretion expense | 3,799 |  |  | 3,676 |
Obligations settled (2) | (2,027) |  |  | (2,969) |
Ending balance | $ | 92,373 |  |  | $ | 85,559 |
(1)Relates to a change in estimates concerning anticipated capping costs at one of our landfills. (2)May include amounts that are being processed through accounts payable as a part of our disbursements cycle.

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- Definition Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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