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REMEDIAL LIABILITIES | 6 Months Ended
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Jun. 30, 2021
Environmental Remediation Obligations [Abstract] |
REMEDIAL LIABILITIES | REMEDIAL LIABILITIES The changes to remedial liabilities from January 1, 2021 through June 30, 2021 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, 2021 | $ | 1,865 |  |  | $ | 63,060 |  |  | $ | 49,888 |  |  | $ | 114,813 |
Accretion | 45 |  |  | 1,320 |  |  | 836 |  |  | 2,201 |
Changes in estimates recorded to consolidated statement of operations | (22) |  |  | 312 |  |  | (145) |  |  | 145 |
Expenditures | (24) |  |  | (2,833) |  |  | (2,255) |  |  | (5,112) |
Currency translation and other | — |  |  | (805) |  |  | 1,212 |  |  | 407 |
Balance at June 30, 2021 | $ | 1,864 |  |  | $ | 61,054 |  |  | $ | 49,536 |  |  | $ | 112,454 |
In the six months ended June 30, 2021, there were no significant (benefits) charges resulting from changes in estimates for remedial liabilities.

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- Definition The entire disclosure for environmental loss contingencies, such as presence of hazardous waste, relevant information from reports issued by regulators, and estimated costs to achieve compliance with regulatory requirements. This element may be used for all of an entity's disclosures about environmental loss contingencies. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -URI http://asc.fasb.org/subtopic&trid=2175709 + Details
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