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COMMITMENTS AND CONTINGENCIES | 12 Months Ended
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Dec. 31, 2025
Commitments and Contingencies Disclosure [Abstract] |
COMMITMENTS AND CONTINGENCIES | 10. COMMITMENTS AND CONTINGENCIES Environmental Matters. Although the Company believes that it is in material compliance with applicable environmental regulations, the risk of environmental remediation costs and liabilities are inherent in pipeline ownership and operation. Furthermore, the Company can provide no assurances that significant environmental remediation costs and liabilities will not be incurred in the future. The Company is currently not aware of any material contingent liabilities that exist with respect to environmental matters, except as noted below. As of December 31, 2025, the Company has recognized (i) a current liability for remediation effort expenditures expected to be incurred within the next 12 months and (ii) a noncurrent liability for estimated remediation expenditures expected to be incurred subsequent to December 31, 2026. Each of these amounts represent the Company’s best estimate for costs expected to be incurred. Neither of these amounts have been discounted to their present value. An update of the Company’s undiscounted accrued environmental remediation is as follows and is primarily related to the 2015 Blacktail Release and other environmental remediation activities, as detailed below.
| (In thousands)
Accrued environmental remediation, December 31, 2023 | $ | 2,937 |
Payments made | (1,160) |
Changes in estimates | 421 |
Accrued environmental remediation, December 31, 2024 | $ | 2,198 |
Payments made | (260) |
Changes in estimates | (176) |
Accrued environmental remediation, December 31, 2025 | $ | 1,762 |
In 2015, SMLP learned of the rupture of a four-inch produced water gathering pipeline on the Meadowlark Midstream system near Williston, North Dakota (“2015 Blacktail Release”). On August 4, 2021, subsidiaries of SMLP entered into the following agreements to resolve the U.S. federal and North Dakota state governments’ environmental claims with respect to the 2015 Blacktail Release: (i) a Consent Decree with the U.S. Department of Justice, the U.S. Environmental Protection Agency (“EPA”), and the State of North Dakota (“Consent Decree”); (ii) a Plea Agreement with the United States (“Plea Agreement”); and (iii) a Consent Agreement with the North Dakota Industrial Commission (“Consent Agreement” together with the Consent Decree and Plea Agreement, the “Global Settlement”). As of December 31, 2025 and 2024, the accrued loss liability for the 2015 Blacktail Release was $8.3 million and $15.0 million, respectively, and are recorded within Other noncurrent liabilities and Accrued settlement payable within the consolidated balance sheets. The Company intends to fully satisfy all monetary obligations related to the 2015 Blacktail Release by December 31, 2026. Key terms of the Global Settlement included (i) payment of penalties and fines totaling $36.3 million, consisting of $1.25 million in natural resource damages payable to federal and state governments, $25.0 million payable to the federal government over five years, and $10.0 million payable to state governments over, for the federal and state civil amounts, six years and, for the federal criminal amounts, five years, with interest applied to unpaid amounts accruing at, for the federal and state civil amounts, a fixed rate of 3.25% and, for the federal criminal amounts, a variable rate set by statute (ii) continuation of remediation efforts at the site of the 2015 Blacktail Release; (iii) other injunctive relief including but not limited to control room management, environmental management system audit, training, and reporting; (iv) guilty pleas by defendant Summit Midstream Partners, LLC (the “Defendant”) for (a) one charge of negligent discharge of a harmful quantity of oil and (b) one charge of knowing failure to immediately report a discharge of oil; and (v) organizational probation for a minimum period of three years from sentencing on December 6, 2021, including payment in full of certain components of the fines and penalty amounts. The agreements comprising the Global Settlement were subject to the approval of the U.S. District Court for the District of North Dakota (the “U.S. District Court”). The U.S. District Court entered an order making the civil components of the Global Settlement effective on September 28, 2021 and accepted the sentencing in the Plea Agreement on December 6, 2021, completing approval of the Global Settlement. Subsidiaries of the Company are also participating in two proceedings before the EPA as a result of the Plea Agreement becoming effective. Following the U.S. District Court’s entering judgment on the Defendant’s guilty plea to one count of negligent discharge of produced water in violation of the Clean Water Act, the Defendant was statutorily debarred by operation of law pursuant to 33 U.S.C. § 1368(a) to participate in federal awards performed at the “violating facility,” which the EPA determined to be the Marmon subsystem of the produced water gathering system in North Dakota. The scope and effect of the debarment as defined do not materially affect the Company’s operations. The Defendant has submitted a petition for reinstatement, which was denied by the EPA’s suspension and debarment office (“SDO”) on July 11, 2022. The SDO determined that the term of probation in the Plea Agreement was the appropriate period of time to demonstrate the Defendant’s change of corporate attitude, policies, practices, and procedures. SMLP and certain subsidiaries of SMLP have also received a show cause notice from the EPA requesting us to “show cause” why SDO should not issue a Notice of Proposed Debarment to the Defendant and certain affiliates under 2 C.F.R. § 180.800(d), to which SMLP responded, and in which proceeding no further developments have occurred. Legal Proceedings. The Company is involved in various litigation and administrative proceedings arising in the ordinary course of business. In the opinion of management, any liabilities, which include insured claims, would not individually or in the aggregate have a material adverse effect on the Company’s financial position or results of operations. When a liability is covered by insurance, the Company reports the gross liability for the loss and a separate asset for the estimate of the probable amount recoverable from the insurance company. As of December 31, 2025, the Company has an accrued loss liability of $0.9 million related to ongoing legal matters.

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