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REMEDIAL LIABILITIES (Tables) | 3 Months Ended
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Mar. 31, 2020
Environmental Remediation Obligations [Abstract] |
Changes to remedial liabilities | The changes to remedial liabilities from January 1, 2020 through March 31, 2020 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, 2020 | $ | 1,851 |  |  | $ | 61,991 |  |  | $ | 50,331 |  |  | $ | 114,173 |
Accretion | 22 |  |  | 599 |  |  | 415 |  |  | 1,036 |
Changes in estimates recorded to statement of operations | 1 |  |  | (362 | ) |  | (282 | ) |  | (643 | )
Expenditures | (15 | ) |  | (1,256 | ) |  | (1,323 | ) |  | (2,594 | )
Currency translation and other | — |  |  | (43 | ) |  | (1,065 | ) |  | (1,108 | )
Balance at March 31, 2020 | $ | 1,859 |  |  | $ | 60,929 |  |  | $ | 48,076 |  |  | $ | 110,864 |

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