Montana Department of Environmental Quality About Us Permitting & Operator Assistance Public Participation

Air Quality | CHS Inc - Laurel Refinery| Public Comment Period Ends March 30, 2026

  • March 13 2026

The Department of Environmental Quality (DEQ) has prepared a Preliminary Determination (PD) for Montana Air Quality Permit #1821-47, for CHS Inc.-Laurel Refinery.

A Draft Environmental Assessment (Draft EA) analyzing potential impacts of the proposed permit action on the affected human environment has also been prepared and is attached to the PD. This PD, and associated Draft EA, are issued by DEQ pursuant to §§ 75-1-101, et. seq, and 75-2-201, et. seq, Montana Code Annotated.

Location:

  • South ½ of Section 16, Township 2 South, Range 24 East
  • Yellowstone County

Associated Materials:

Comment Period Ends: 

  • March 30, 2026 11:59PM

Send Comments To:

OR

  •  DEQ Air Quality Bureau
     PO Box 200901
     Helena MT 59620-0901

Tags: MEPA, Public Comment and Air