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Montana Events and Public Notices

Event and public notice information for the state of Montana. 

Events

There are no public events at this time.

Public Notices

  • Opportunity to Comment on Notification of Zero Discharge Requirements for Last Best Armory LLC in Montana

    Public notice of NPDES Notification of Pretreatment Discharge Requirements for The Last Best Armory LLC in Big Timber, Montana.

    • Comments Due Date: October 23, 2026
    • Geographic Locations: Montana, Rocky Mountains
  • Record of Decision Amendment for BPSOU Released

    EPA finalized a Record of Decision Amendment (RODA) that lowers the existing residential soil-lead cleanup level in the Butte Priority Soils Operable Unit (BPSOU) from 1,200 ppm to 456 ppm.

    • Geographic Locations: Montana
  • Silver Bow Creek - Butte Area Superfund Site Five-Year Review Complete

    Sixth five-year review completed for Silver Bow Creek / Butte Area Superfund Site

    • Geographic Locations: Montana
  • Consent Agreement with Charlo-Lake County Water and Sewer District for Clean Water Act Violations

    Consent agreement with the Consolidated Charlo-Lake County Water and Sewer District to resolve alleged Clean Water Act Violations for failing to submit monthly discharge monitoring reports.

    • Comments Due Date: October 8, 2026
    • Geographic Locations: Montana, Rocky Mountains
  • Draft UIC Class V Aquifer Exemption Expansion and Area of Review Expansion – Montalban Oil and Gas Operations, Jody Field 34-1 & 34-2, Pondera County, Montana

    Public Notice for two UIC Permits

    • Geographic Locations: Montana, Rocky Mountains
  • MOGO-Jody Field 34-1 & 34-2 Disposal Well, Pondera County, Montana, Permit #’s ​ MT52443-12513 & MT52439-12514​

    UIC Draft Permit Public Notice

    • Geographic Locations: Montana, Rocky Mountains

EPA in Montana

  • Montana Events and Public Notices
  • Hot Topics in Montana
  • Environmental Information for Montana
Contact Us about EPA in Montana
Contact Us about EPA in Montana to ask a question, provide feedback, or report a problem.
Last updated on August 17, 2026
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