Air Quality | Phillips 66 Company - Billings Refinery| Public Comment Period Ends November 15, 2025

The Department of Environmental Quality has prepared a Draft 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:

• OP2619-19
• TRD2619-19

Comment Period Ends:                             

• November 14, 202511:59PM

Send Comments To:

• DEQAir@mt.gov

OR

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

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Tags: Public Comment and Air