Final Issuance of EPA UIC Class V Injection Well Permits and Aquifer Exemption Expansion – Montalban Oil and Gas Operations, Jody Field 34-1 & 34-2, Pondera County, Montana
The U.S. Environmental Protection Agency (EPA) Region 8 Underground Injection Control (UIC) Program is issuing two Class V permits to Montalban Oil & Gas Operations, Inc. (MOGO) for injection activities into the Jody Field 34-1 and 34-2 wells. The permits will allow for injection of produced fluid from oil and gas related activities and non-hazardous industrial wastewater into the two existing wells. The wastewater is from the Montana Renewables Refinery in Great Falls, MT, and is generated by pretreating renewable feedstocks. EPA is also issuing an aquifer exemption expansion approval in connection with the UIC Class V permits. Specifically, this approval consolidates and expands previously authorized exemptions for the Madison Formation at the Jody Field 34-1 and Jody Field 34-2 wells by expanding the exempted area laterally to 6.6 square miles and increasing the depth to approximately 3,700 feet below ground surface.
Documents for the administrative record for this action can be found on regulations.gov at: https://www.regulations.gov/docket/EPA-R08-OW-2025-0852/document
PERMIT APPEAL PROCEDURES: Any person who filed comments on or participated in a hearing on the draft permits can appeal the final permits by filing a written petition for review with the Clerk of the EPA Environmental Appeals Board (EAB). The procedures for filing an appeal can be found at 40 CFR § 124.19. Additionally, any person who failed to file comments or participate in a hearing on the draft permits may petition for administrative review of any permit conditions set forth in the final permit decision, but only to the extent that those final permit conditions reflect changes from the proposed draft permit. A petition for review must be filed within thirty (30) days after service of notice announcing EPA’s final permit decisions.
Contact:
Please email R8UICMailbox@epa.gov with the subject line: Final Decisions for EPA UIC Class V Well MOGO Permits and Aquifer Exemption