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

Air Quality | CHS Inc.- Laurel Refinery

  • March 26 2026

The Department of Environmental Quality has prepared a Proposed Permit regarding Operating Permit #OP1821-22, for CHS Inc.- Laurel Refinery.

Location:

  • S½, Section 16, Township 2 South, Range 24 East
  • Yellowstone County

Associated Materials:

EPA Review Period Ends: 

  • May 11, 2026 11:59PM

Contact: Craig Henrikson


Tags: Air and Public Notice