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Environmental Liabilities | 12 Months Ended
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Dec. 31, 2024
Environmental Remediation Obligations [Abstract] |
Environmental Liabilities | 11. Environmental Liabilities The Company’s environmental liabilities relate to sawmills, pulp, paper and wood treating plants which have ceased operations other than environmental investigation and remediation activities. The Company owns or has liability for approximately 20 sites that are subject to various federal, state or provincial statutes, including but not limited to RCRA, CERCLA and the Environmental Protection Act in the U.S., and similar laws in Canada and France, related to the investigation and remediation of environmentally-impacted sites. The Company estimates its environmental liabilities based on its current interpretation of environmental laws and regulations when it is probable a liability has been incurred and the amount of such liability is estimable. The Company estimates its environmental liabilities based on several factors, including the application and interpretation of current environmental laws, regulations and other requirements; reports and advice of internal and third-party environmental specialists; and management’s knowledge and experience with these and similar types of environmental matters. These estimates include potential costs for investigation, assessment, remediation, ongoing operation and maintenance (where applicable) and post-remediation monitoring of the sites, as well as the cost of legally required financial assurance related to the Company’s obligations on an undiscounted basis, generally for a period of 20 years. These environmental liabilities do not include potential third-party recoveries to which the Company may be entitled unless they are probable and estimable. The following table presents the activity of the Company’s environmental liabilities, including those of specific sites where current estimates exceed 10 percent of the total liabilities for disposed operations at December 31, 2024, 2023 or 2022:
| December 31, 2022 Liability |  | Payments |  | Increase (Decrease) to Liability(a) |  | December 31, 2023 Liability |  | Payments |  | Increase (Decrease) to Liability(a) |  | December 31, 2024 Liability
Port Angeles, Washington | $ | 52,654 |  |  | $ | (484) |  |  | $ | 498 |  |  | $ | 52,668 |  |  | $ | (1,004) |  |  | $ | 1,594 |  |  | $ | 53,258 |
Augusta, Georgia | 21,102 |  |  | (777) |  |  | 2,330 |  |  | 22,655 |  |  | (1,227) |  |  | 1,089 |  |  | 22,517 |
Baldwin, Florida | 16,187 |  |  | (733) |  |  | 437 |  |  | 15,891 |  |  | (383) |  |  | 447 |  |  | 15,955 |
East Point, Georgia | 18,069 |  |  | (1,168) |  |  | 2,811 |  |  | 19,712 |  |  | (1,111) |  |  | 1,154 |  |  | 19,755 |
All other sites | 62,669 |  |  | (2,223) |  |  | (1,081) |  |  | 59,365 |  |  | (2,180) |  |  | 1,545 |  |  | 58,730 |
Total environmental liabilities | 170,681 |  |  | $ | (5,385) |  |  | $ | 4,995 |  |  | 170,291 |  |  | $ | (5,905) |  |  | $ | 5,829 |  |  | 170,215 |
Current environmental liabilities | (10,732) |  |  |  |  |  |  | (9,833) |  |  |  |  |  |  | (9,749) |
Non-current environmental liabilities | $ | 159,949 |  |  |  |  |  |  | $ | 160,458 |  |  |  |  |  |  | $ | 160,466 |
(a)Included in the increase (decrease) to liability during the year ended December 31, 2024 was a decrease of $1 million due to foreign currency fluctuations. The liability as of December 31, 2023 was not materially impacted by foreign currency fluctuations. Port Angeles, Washington The Company operated a pulp mill at this site from 1930 until 1997. The site and the adjacent marine areas (a portion of Port Angeles harbor) have been in various stages of the assessment process under the Washington MTCA since 2000, and several voluntary interim soil clean-up actions have been performed during this time. In addition, the Company may be liable under CERCLA for “natural resource damages” caused by releases from the site. As a result of an agreed order with Washington Ecology, the remainder of the Washington MTCA regulatory process will be completed on a set timetable, subject to the approval of all reports and studies by Washington Ecology. Upon completion of all work required under the agreed order and negotiation of an approved remedy, additional remedial measures for the site and off-site areas may be necessary and, as a result, current cost estimates and the corresponding liability could change. During 2024, the estimated liability increased primarily due to changes in estimates related to remediation activities. During 2023, the estimated liability was relatively unchanged. Augusta, Georgia The Company operated a wood treatment plant at this site from 1928 to 1988. This site operates under a 10-year hazardous waste permit that was renewed and issued pursuant to RCRA in 2015. Ongoing remediation activities currently consist primarily of groundwater recovery and treatment. Current cost estimates and the corresponding liability could vary if recovery or discharge volumes change or if changes to current remediation activities are required in the future. During 2024, the estimated liability was relatively unchanged. During 2023, the estimated liability increased primarily due to changes in estimates related to site operations and maintenance. Baldwin, Florida The Company operated a wood treatment plant at this site from 1954 to 1987. This site operates under a 10-year hazardous waste permit renewed and issued pursuant to RCRA in 2017. Ongoing remediation activities currently consist primarily of groundwater recovery and treatment. Additional remedial activities may be necessary in the future that may result in changes to current cost estimates and the corresponding liability. During 2024 and 2023, the estimated liability was relatively unchanged. East Point, Georgia The Company operated a wood treatment plant at this site from 1920 to 1984. Current site activities are governed by a 2009 Consent Order that will conclude with a new 10-year RCRA permit, which will replace the current 1996 permit. Onsite remediation activities consist primarily of groundwater recovery and treatment. Current cost estimates and the corresponding liability could vary if changes to current remediation activities are required in the future. During 2024, the estimated liability was relatively unchanged. During 2023, the reserve increased primarily due to increases in financial assurance rates and estimates related to site operations and maintenance. In addition to these estimated liabilities, the Company is subject to the risk of reasonably possible additional liabilities in excess of the established liabilities due to potential changes in circumstances and future events, including, without limitation, changes to current laws and regulations; changes in governmental agency personnel, direction, philosophy or enforcement policies; developments in remediation technologies; increases in the cost of remediation, operation, maintenance and monitoring of its environmental liability sites; changes in the volume, nature or extent of contamination to be remediated or monitoring to be undertaken; the outcome of negotiations with governmental agencies or non-governmental parties; and changes in accounting rules or interpretations. Based on information available as of December 31, 2024, the Company estimates this exposure could range up to approximately $87 million. However, no assurances can be given that this amount will not be exceeded given the factors described above. These potential additional costs are attributable to several of the above sites and other applicable liabilities. This estimate excludes liabilities that would otherwise be considered reasonably possible but for the fact that they are not currently estimable primarily due to the factors discussed above. Subject to the previous paragraph, the Company believes its estimates of liabilities are sufficient for probable costs expected to be incurred over the next 20 years with respect to its disposed operations. However, no assurance is given that these estimates will be sufficient for the reasons described above and additional liabilities could have a material adverse effect on the Company’s financial position, results of operations and cash flows.

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