MEPA | Draft Greenhouse Gas (GHG) Guidance | Comment Period Ends October 30, 2025 | Listening Sessions October 27, 29, and 30, 2025

October 01 2025

Senate Bill 221 from the 2025 Legislative Session 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) under the Montana Environmental Policy Act (MEPA).

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

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.

Associated Materials:

Comment Period Ends: October 30, 2025

Send/Submit Comments To:

Montana Department of Environmental Quality
Attn: Craig Jones
PO Box 200901
Helena, MT 59620-0901

Comments can be emailed to deqmepa@mt.gov

Public Meeting information:

Public comments will also be accepted at three listening sessions.

Billings
Monday, October 27, 2025 6:00-8:00 PM
Billings Hotel and Convention Center
1223 Mullowney Ln, Billings, MT 59101

Attend on Zoom (Billings)
Webinar ID: 841 3741 8763
Passcode: 803749
Join via audio: +1 206 337 9723

Missoula
Wednesday, October 29, 2025 6:00-8:00 PM
University Center South Ballroom, The University of Montana
32 Campus Dr, Missoula, MT 59812

Attend on Zoom (Missoula)
Webinar ID: 830 2269 7504
Passcode: 985436
Join via audio: +1 206 337 9723

Helena
Thursday, October 30, 2025 6:00-8:00 PM
Delta Hotel
2301 Colonial Dr, Helena, MT 59601

Attend on Zoom (Helena)
Meeting ID: 874 7304 2835
Passcode: 246310
Join via audio: +1 206 337 9723

Accommodation statement

The department will make reasonable accommodations for persons with disabilities who wish to participate in this public participation process or need an alternative accessible format of this notice. If you require an accommodation, contact the department no later than 5:00 P.M. October 20, 2025, to advise us of the nature of the accommodation that you need. Please contact the Department of Environmental Quality at P.O. Box 200901, Helena, Montana 59620-0901; phone (406) 444-0514; or e-mail crajones@mt.gov.

Tags: MEPA, Public Comment, Air and Public Meeting