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

Air Quality | Phillips 66 Company - Billings Refinery

  • December 08 2025

The Department of Environmental Quality has prepared a Proposed Permit regarding Operating Permit #OP2619-19, for Phillips 66 Company - Billings Refinery.

Location:

  • NW ¼ Section 2, Township 1 South, Range 26 East
  • Yellowstone County

Associated Materials:

EPA Review Period Ends: 

  • January 22, 2025 11:59PM

Contact: John P. Proulx


Tags: Air and Public Notice