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REMEDIAL LIABILITIES | 12 Months Ended
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Dec. 31, 2024
Environmental Remediation Obligations [Abstract] |
REMEDIAL LIABILITIES | REMEDIAL LIABILITIES The changes to remedial liabilities from January 1, 2023 through December 31, 2024 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, 2023 | $ | 1,824 |  |  | $ | 59,749 |  |  | $ | 54,717 |  |  | $ | 116,290 |
Accretion | 89 |  |  | 2,540 |  |  | 1,561 |  |  | 4,190 |
Changes in estimates recorded to consolidated statement of operations | 19 |  |  | 1,713 |  |  | 1,896 |  |  | 3,628 |
Environmental expenditures | (52) |  |  | (3,840) |  |  | (9,384) |  |  | (13,276) |
Currency translation and other | — |  |  | 115 |  |  | 296 |  |  | 411 |
Balance at December 31, 2023 | 1,880 |  |  | 60,277 |  |  | 49,086 |  |  | 111,243 |
Liabilities assumed in acquisitions | — |  |  | — |  |  | 5,192 |  |  | 5,192 |
Accretion | 92 |  |  | 2,292 |  |  | 1,514 |  |  | 3,898 |
Changes in estimates recorded to consolidated statement of operations | 29 |  |  | 573 |  |  | 3,762 |  |  | 4,364 |
Expenditures | (53) |  |  | (6,078) |  |  | (5,715) |  |  | (11,846) |
Currency translation and other | — |  |  | (28) |  |  | (1,078) |  |  | (1,106) |
Balance at December 31, 2024 | $ | 1,948 |  |  | $ | 57,036 |  |  | $ | 52,761 |  |  | $ | 111,745 |
In the year ended December 31, 2024, the Company increased its remedial liabilities for an existing Superfund site by $2.9 million related to new information on the ultimate remediation of this site. Anticipated payments at December 31, 2024 (based on current estimated costs and anticipated timing of necessary regulatory approvals to commence work on remedial activities) for each of the next five years and thereafter were as follows (in thousands):
Years ending December 31, |
2025 | $ | 10,321 |
2026 | 17,391 |
2027 | 11,259 |
2028 | 10,972 |
2029 | 8,745 |
Thereafter | 70,610 |
Undiscounted remedial liabilities | 129,298 |
Less: Discount at risk free rates | (17,553) |
Total remedial liabilities | $ | 111,745 |
The following table presents the Company's estimated remedial liabilities and reasonably possible additional liabilities as of December 31, 2024 disaggregated by facility/site type (in thousands, except percentages):
Type of Facility or Site | Remedial Liabilities |  | % of Total |  | Reasonably Possible Additional Liabilities (1)
Inactive facilities not used in active conduct of the Company's business, most of which were assumed through prior period acquisitions (25 facilities) | $ | 56,976 |  |  | 51.0 | % |  | $ | 10,765 |
Facilities now used in active conduct of the Company's business (62 facilities, including 24 acquired by the Company through acquisitions in 2024) | 46,131 |  |  | 41.3 |  |  | 9,497 |
Superfund sites (12 sites) | 8,638 |  |  | 7.7 |  |  | 1,296 |
Total | $ | 111,745 |  |  | 100.0 | % |  | $ | 21,558 |
___________________________________ (1)Amounts represent the high end of the range of management's best estimate of the reasonably possible additional liabilities. The following table presents the Company's estimated remedial liabilities and reasonably possible additional liabilities as of December 31, 2024 disaggregated by facilities/sites which represent at least 5% of the total and with all other facilities/ sites combined (in thousands, except percentages):
Location |  | Type of Facility or Site |  | Remedial Liabilities(1) |  | % of Total |  | Reasonably Possible Additional Liabilities(2)
Baton Rouge, LA |  | Closed incinerator and landfill |  | $ | 25,578 |  |  | 22.9 | % |  | $ | 4,303 |
Bridgeport, NJ |  | Closed incinerator |  | 17,417 |  |  | 15.6 |  |  | 3,254 |
Mercier, Quebec |  | Idled incinerator |  | 10,826 |  |  | 9.7 |  |  | 1,631 |
Linden, NJ |  | Operating solvent recycling center |  | 9,434 |  |  | 8.4 |  |  | 2,148 |
Various |  | All other incinerators, landfills, wastewater treatment facilities and service centers (83 facilities, including 24 acquired by the Company through acquisitions in 2024) |  | 39,852 |  |  | 35.7 |  |  | 8,926 |
Various |  | Superfund sites (each representing less than 5% of total liabilities) (12 sites) |  | 8,638 |  |  | 7.7 |  |  | 1,296 |
Total |  |  |  | $ | 111,745 |  |  | 100.0 | % |  | $ | 21,558 |
_________________________________ (1)$23.3 million of the $111.7 million remedial liabilities include estimates related to the legal and administrative proceedings discussed in Note 18, "Commitments and Contingencies." (2)Amounts represent the high end of the range of management's best estimate of the reasonably possible additional liabilities. Revisions to remediation reserve requirements may result in upward or downward adjustments to income from operations in any given period. The Company believes that its extensive experience in the environmental services business, as well as its involvement with a large number of sites, provides a reasonable basis for estimating its aggregate liability. It is possible, however, that future changes in available technology, regulatory or enforcement developments, the results of environmental studies or other factors could necessitate the recording of additional liabilities or the revision of currently recorded liabilities that could be material. Since the Company's satisfaction of the liabilities will occur over many years, the Company cannot reasonably predict the nature or extent of possible future events or the impact that those events, if any, might have on the current estimates of remedial liabilities.

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