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COMMITMENTS AND CONTINGENCIES | 3 Months Ended
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Mar. 31, 2026
Commitments and Contingencies Disclosure [Abstract] |
COMMITMENTS AND CONTINGENCIES | COMMITMENTS AND CONTINGENCIES Legal Proceedings In the ordinary course of our business and as the result of the extensive governmental regulation of the solid waste industry, we are subject to various judicial and administrative proceedings involving state and local agencies. In these proceedings, an agency may seek to impose fines or to revoke or deny renewal of an operating permit held by us. From time to time, we may also be subject to actions brought by special interest or other groups, adjacent landowners or residents in connection with the permitting and licensing of landfills and transfer stations, or allegations of environmental damage or violations of the permits and licenses pursuant to which we operate. In addition, we may be named defendants in various claims and suits pending for alleged damages to persons and property, alleged violations of certain laws and alleged liabilities arising out of matters occurring during the ordinary operation of a waste management business. The plaintiffs in some actions seek unspecified damages or injunctive relief, or both. These actions fall within various procedural stages at any point in time, and some are covered in part by insurance. In accordance with FASB ASC 450 - Contingencies, we accrue for legal proceedings, inclusive of legal costs, when losses become probable and reasonably estimable. We have recorded an aggregate accrual, net of payments of $2,265 relating to our outstanding legal proceedings as of March 31, 2026 and it is at least reasonably possible that a change in estimate will occur in the near-term. As of the end of each applicable reporting period, we review each of our legal proceedings to determine whether it is probable, reasonably possible or remote that a liability has been incurred and, if it is at least reasonably possible, whether a range of loss can be reasonably estimated under the provisions of FASB ASC Subtopic 450-20. In instances where we determine that a loss is probable and we can reasonably estimate a range of loss we may incur with respect to such a matter, we record an accrual for the amount within the range that constitutes our best estimate of the possible loss. If we are able to reasonably estimate a range, but no amount within the range appears to be a better estimate than any other, we record an accrual in the amount that is the low end of such range. When a loss is reasonably possible, but not probable, we will not record an accrual, but we will disclose our estimate of the possible range of loss where such estimate can be made in accordance with FASB ASC 450-20. We disclose outstanding matters that we believe could have a material adverse effect on our financial condition, results of operations or cash flows. North Country Environmental Services Letter of Deficiency On June 14, 2024, our subsidiary, North Country Environmental Services, Inc. (“NCES”), received a Letter of Deficiency (the “Letter”) from the New Hampshire Department of Environmental Services (“NHDES”) concerning alleged violations related to leachate management and leachate data and reporting. The Letter required certain actions to correct the deficiencies on a prescribed timeline, and NCES has met the deadlines for information submission. On January 12, 2026, the New Hampshire Department of Justice and NCES entered into a Consent Decree resolving the alleged violations and requiring the payment of a $1,900 civil penalty, part of which may be offset through approved Supplemental Environmental Projects focused on stabilizing landfill debris impacting the Saco River, of which one such project has already been implemented. The Consent Decree is subject to court approval. The terms of the settlement allow for us to receive a credit towards the penalty for field work costs associated with a Supplemental Environmental Project. The accrual has been reduced to account for these sums that have already been paid. Granite State Landfill Solid Waste Permit Denial On April 3, 2025, NHDES denied the October 31, 2023 application of our subsidiary, Granite State Landfill, LLC (“GSL”), for the development of new landfill capacity in New Hampshire. On April 8, 2025, GSL filed a Petition for Declaratory Judgment in the Merrimack Superior Court (“Court”) requesting that the Court find that NHDES’s denial of GSL’s application was unlawful (“Petition”). On May 9, 2025, NHDES filed an Answer to the Petition. On June 23, 2025, North Country Alliance for Balanced Change (“NCABC”) filed a Motion to Intervene, in response to which GSL filed an Objection on June 30, 2025. On July 1, 2025, a scheduling conference was held and the Court issued a Scheduling Order of the same date providing that the issues raised in the Petition appear to be a legal dispute that can be addressed by cross-motions for summary judgment, and requiring the parties to confer and submit briefing schedule proposals to the Court on or before July 18, 2025. A Joint Proposed Briefing Schedule was filed by the parties on July 17, 2025. NCABC filed a reply to GSL’s Objection to NCABC’s Motion to Intervene on July 25, 2025. On August 5, 2025, the Court issued an order granting NCABC’s Motion to Intervene. GSL timely moved for reconsideration of that order, which was denied on September 2, 2025. GSL then filed a Motion for an Interlocutory Appeal on September 12, 2025, to challenge NCABC’s standing to intervene. NCABC objected to the Motion for an Interlocutory Appeal on September 22, 2025. On September 15, 2025, GSL and NHDES filed cross-motions for summary judgment. NCABC joined in NHDES’s motion. GSL’s and NHDES’s objections to the cross-motions for summary judgment were submitted October 15, 2025. A hearing on the motions for summary judgment originally scheduled for February 26, 2026 has yet to be rescheduled. On May 5, 2025, GSL and NCABC each filed a Notice of Appeal of NHDES’s denial of GSL’s application with the New Hampshire Waste Management Council (“GSL Appeal” and “NCABC Appeal”, respectively). On May 9, 2025, GSL filed a partially assented to Motion to Intervene in the NCABC Appeal, followed by a Motion to Dismiss the NCABC Appeal on June 27, 2025. NHDES filed a Motion to Dismiss the NCABC Appeal on July 17, 2025. NCABC filed an Objection to GSL’s Motion to Dismiss on July 24, 2025 and to NHDES’s Motion to Dismiss on July 28, 2025. On August 8, 2025, NCABC filed a Motion to Intervene in the GSL Appeal which will depend on the success or failure of GSL’s Motion to Dismiss the NCABC Appeal. On February 23, 2026, the Waste Management Council issued an Order declining to accept the NCABC Appeal. In response, NCABC submitted a Motion for Rehearing and Clarification along with a Revised Petition for Appeal, both dated March 16, 2026. The Waste Management Council subsequently denied NCABC’s Motion for Rehearing by Order dated March 27, 2026. The Waste Management Council held a prehearing conference for this matter on April 15, 2026, at which time NCABC’s Motion to Intervene was argued, and a deadline was set for NHDES to file additional motions concerning the GSL Appeal. NCABC’s Motion to Intervene remains under consideration. As of March 31, 2026, we had $13,480 of capitalized project development costs related to the GSL landfill project included in other non-current assets. Juniper Ridge Landfill Public Benefit Determination Remand on Appeal On January 7, 2026, the Penobscot Superior Court (“Superior Court”) issued a decision in the matter of Penobscot Nation & Conservation Law Foundation (“Petitioners”) v. Maine Department of Environmental Protection (“Department”), with Casella subsidiary, NEWSME Landfill Operations, LLC as Party‑in‑Interest, addressing the Petitioners’ challenge to the Department’s public benefit determination for the proposed expansion of the Subtitle D landfill located in West Old Town, Maine (“Juniper Ridge Landfill”) that we operate. The Superior Court granted Petitioners’ motion for judicial notice and found that the Department failed to make necessary factual findings regarding both the need for on‑site sludge‑drying and the cumulative environmental burdens borne by the Penobscot Nation. The Superior Court remanded the matter for the Department to make additional findings on these issues. The Department made additional findings in a revised public benefit determination submitted by the Department to the Superior Court on March 23, 2026. The matter remains pending before the Superior Court. Environmental Remediation Liabilities We are subject to liability for environmental damage, including personal injury and property damage, that our solid waste, recycling and power generation facilities may cause to neighboring property owners, particularly as the result of the contamination of drinking water sources or soil, possibly including damage resulting from conditions that existed before we acquired the facilities. We may also be subject to liability for similar claims arising from off-site environmental contamination caused by pollutants or hazardous substances if we or our predecessors arrange or arranged to transport, treat or dispose of those materials. We accrue for costs associated with environmental remediation obligations when such costs become both probable and reasonably estimable. Determining the method and ultimate cost of remediation requires that a number of assumptions be made. There can sometimes be a range of reasonable estimates of the costs associated with remediation of a site. In these cases, we use the amount within the range that constitutes our best estimate. In the early stages of the remediation process, particular components of the overall liability may not be reasonably estimable; in this instance we use the components of the liability that can be reasonably estimated as a surrogate for the liability. It is reasonably possible that we will need to adjust the liabilities recorded for remediation to reflect the effects of new or additional information, to the extent such information impacts the costs, timing or duration of the required actions, which could have a material adverse effect on our consolidated financial position, results of operations and cash flows. We disclose outstanding environmental remediation matters that remain unsettled or are settled in the reporting period that we believe could have a material adverse effect on our financial condition, results of operations or cash flows. We inflate the estimated costs in current dollars to the expected time of payment and discount the total cost to present value using a risk-free interest rate when the amount and timing of cash payments for the liability are fixed or reliably determinable. The weighted-average risk-free interest rate associated with our environmental remediation liabilities as of March 31, 2026 was approximately 1.8%. A summary of the changes to the aggregate environmental remediation liabilities for the three months ended March 31, 2026 and 2025 follows:
| Three Months Ended March 31,
| 2026 |  | 2025
Beginning balance | $ | 4,988 |  |  | $ | 5,532 |
Accretion expense | 22 |  |  | 23 |
Obligations settled (1) | (69) |  |  | (12) |
Ending balance | 4,941 |  |  | 5,543 |
Less: current portion | 1,239 |  |  | 1,585 |
Long-term portion | $ | 3,702 |  |  | $ | 3,958 |
(1)May include amounts that are being processed through accounts payable as a part of our disbursement cycle.

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