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

Air Quality | Par Montana, LLC. - Billing Refinery

August 08 2025

The Department of Environmental Quality has prepared a Department Decision regarding Operating Permit #OP1564-22, for Par Montana, LLC. - Billing Refinery.

Location:

Section 25, Township 1 North, Range 26 East
Yellowstone County

Associated Materials:

OP1564-22
TRD1564-22

Facility Appeal Period Ends:

September 8, 2025 11:59pm

Contact: John P. Proulx

Tags: Air and Public Notice