EPA Proposed Rule: Clean Air Act - Montana Air Quality

The Environmental Protection Agency (EPA) has released a document (EPA-R08-OAR-2025-0387-0005) concerning a proposed rule related to the Clean Air Act in Montana. This filing indicates a new regulatory proposal is being introduced or considered, likely pertaining to air quality standards or emissions controls within the state. As this is a consultation document, it signifies the initial stage of the rulemaking process where public input is sought.

Regulated entities and interested parties in Montana should review this document to understand the proposed changes to air quality regulations. The EPA is soliciting feedback, and a comment period is expected to be announced. Compliance officers should prepare to assess the potential impact of these proposed regulations on operations and consider submitting comments by the specified deadline to influence the final rule. Failure to comply with future final regulations could result in enforcement actions.