DEQ Invites Public Comment on a Draft Greenhouse Gas Guidance Document

Department of Environmental Quality
  • October 01 2025

The Montana Department of Environmental Quality (DEQ) is requesting public comment on a guidance document to instruct state agencies when conducting analyses as part of the Montana Environmental Policy Act (MEPA).    

This year, the Legislature reformed MEPA by passing Senate Bill 221, which directed DEQ to create a guidance document for state agencies to use as a resource when gathering information about greenhouse gas emissions (GHG). Agencies gather this information while conducting an Environmental Assessment (EA) or an Environmental Impact Statement (EIS). According to the new law, these assessments are informational only and cannot be used to regulate or deny permits. The document recommends methodologies for complying with MEPA. 

GHG emissions are gases, such as carbon dioxide, methane, nitrous oxide, and fluorinated gases that are released into the atmosphere. 

The draft guidance document and information for how to submit a public comment can be found on DEQ’s website.   

Public comments will also be accepted at three listening sessions. These meetings will be from 6 – 8 pm on Monday, Oct. 27 in Billings at the Billings Hotel and Convention Center; Wednesday, Oct. 29 in Missoula at the University of Montana; and Thursday, Oct. 30 in Helena at the Delta Hotel. Zoom participation will also be offered for all three meetings.    

To enhance the guidance document, DEQ is seeking substantive public comments on the draft GHG Guidance. A substantive comment is relevant, fact-based, and specific and may offer insight, analysis, or constructive feedback on the draft document. The public comment period on the draft GHG guidance document is from October 1 – 30. 


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