CLEAN HARBORS INC
For the period ended Dec 31, 2024. Filed Feb 19, 2025.
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FY2024 · Filed Feb 19, 2025
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(10) Closure and Post-Closure Liabilities
The changes to closure and post-closure liabilities (also referred to as "asset retirement obligations") from January 1, 2023 through December 31, 2024 were as follows (in thousands):
| LandfillRetirementLiability | Non-LandfillRetirementLiability | Total | |
|---|---|---|---|
| Balance at January 1, 2023 | $62,251 | $56,550 | $118,801 |
| Liabilities assumed in acquisitions | — | 574 | 574 |
| Measurement period adjustments from prior period acquisitions | — | 3,015 | 3,015 |
| New asset retirement obligations | 3,092 | — | 3,092 |
| Accretion | 4,958 | 4,519 | 9,477 |
| Changes in estimates recorded to consolidated statement of operations | 1,147 | 53 | 1,200 |
| Changes in estimates recorded to consolidated balance sheet | (3,706) | 1,600 | (2,106) |
| Environmental expenditures | (8,478) | (7,206) | (15,684) |
| Currency translation and other | 179 | 52 | 231 |
| Balance at December 31, 2023 | 59,443 | 59,157 | 118,600 |
| Liabilities assumed in acquisitions | — | 11,421 | 11,421 |
| New asset retirement obligations | 2,118 | — | 2,118 |
| Accretion | 5,069 | 4,489 | 9,558 |
| Changes in estimates recorded to consolidated statement of operations | 70 | (295) | (225) |
| Changes in estimates recorded to consolidated balance sheet | 4,335 | 402 | 4,737 |
| Environmental expenditures | (11,210) | (4,466) | (15,676) |
| Currency translation and other | (425) | (320) | (745) |
| Balance at December 31, 2024 | $59,400 | $70,388 | $129,788 |
In the year ended December 31, 2024, there were no significant benefits or charges resulting from changes in estimates for closure and post-closure liabilities. In 2024 and 2023, the Company has been executing upon the planned closure activities at the Company’s non-commercial landfill at the Deer Park, Texas incinerator facility after the site reached its permitted capacity, in early 2023. There have been no changes to the estimated closure costs related to this location.
Anticipated payments (based on current estimated costs and anticipated timing of necessary regulatory approvals to commence work on closure and post-closure activities) for each of the next five years and thereafter are as follows (in thousands):
| Years ending December 31, | |
|---|---|
| 2025 | $10,304 |
| 2026 | 14,457 |
| 2027 | 12,485 |
| 2028 | 14,127 |
| 2029 | 3,224 |
| Thereafter | 278,762 |
| Undiscounted closure and post-closure liabilities | 333,359 |
| Less: Discount at credit-adjusted risk-free rate | (119,353) |
| Less: Undiscounted estimated closure and post-closure liabilities relating to airspace not yet consumed | (84,218) |
| Present value of closure and post-closure liabilities | $129,788 |
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