Public Notices - Air Quality Permits

The Air Compliance Program is responsible for administering those portions of the Clean Air Act (CAA) of Montana (Section 75-2-101 et seq., MCA) and companion regulations pertaining to compliance of air emissions from various types of facilities including delegated federal regulations.

Public Notices
 

Notes: For recent final permits, click the link above. For permits before 2010 please see the Data Search Tools.

The below list includes:

  • Montana Air Quality Permits (MAQPs)
  • Title V Operating Permits (OPs)

Use the field below to search by Permit Number, Facility Name, Location, or description of the facility.

Permit Number Facility/Permit Facility Description/Source Time Frame Site Location DEQ Contact
OP2784-11 
TRD2784-11
NorthWestern Energy Natural gas compressor station Appeal Period Ends March 23, 2020 SE¼ of the SW¼ of Section 34, Township 6 South, Range 21 East, Carbon County, Montana Ed Warner
3336-01 Battle Creek Compressor Station A natural gas compressor station Appeal Period Ends March 5, 2020 SW¼ of the SE¼ of Section 26, Township 36 North, Range 19 East, in Blaine County, Montana Julie Ackerlund
OP2619-16
TRD2619-16
Phillips 66 Company Billings Petroleum Refinery Public Comment Period Ends March 16, 2020 NW ¼ Section 2, Township 1 South, Range 26 East, Yellowstone County, Montana Shawn Juers
4834-01 U.S. Minerals, Inc. Anaconda slag processing plant Public Comment Period Ends February 27, 2020 Township 4 North, Range 11 West in Section 12 in Deer Lodge County, Montana Ed Warner
2161-33 Calumet Montana Refining, LLC Great Falls Petroleum Refinery Appeal Period Ends March 11, 2020 NE¼ of Section 1, Township 20 North, Range 3 East, in Cascade County, Montana Shawn Juers

TRD0513-15
OP0513-15

Talen Montana, LLC – Colstrip Steam Electric Station Electric Generating Facility Appeal Period Ends March 2, 2020 Section 34, Township 2 North, Range 41 East, Rosebud County, Montana Ed Warner
2161-33 Calumet Montana Refining, LLC Great Falls Petroleum Refinery Public Comment Period Ends February 7, 2020 NE¼ of Section 1, Township 20 North, Range 3 East, in Cascade County Shawn Juers

OP2967-12

TRD2967-12

Exxon Mobil Corporation Billings Petroleum Terminal EPA's 45-day Review ends March 9, 2020 Section 25, Township 1 North, Range 26 East, Yellowstone County Shawn Juers

OP2161-14

TRD2161-14

Calumet Montana Refining, LLC Great Falls Petroleum Refinery EPA's 45-day Review ends February 24, 2020  Section 1, Township 20 North, Range 3 East, in Cascade County, Montana Shawn Juers

OP2967-12
TRD2967-12

Exxon Mobil Corporation ExxonMobil Billings Terminal Public Comment Period Ends January 20, 2020 Section 25, Township 1 North, Range 26 East, Yellowstone County Shawn Juers
OP0513-15
TRD0513-15
Talen Montana, LLC - Colstrip Steam Electric Station Electric generating facility EPA's 45-day Review ends January 9, 2020 Section 34, Township 2 North, Range 41 East, Rosebud County, Montana Ed Warner

OP2161-14
TRD2161-14

Calumet Montana Refining, LLC Great Falls Petroleum Refinery Public Comment Period Ends December 4, 2019 Section 1, Township 20 North, Range 3 East, in Cascade County, Montana Shawn Juers

OP0513-15
TRD0513-15

Talen Montana, LLC – Colstrip Steam Electric Station Electric Generating Facility Public Comment Period Ends November 18, 2019 Section 34, Township 2 North, Range 41 East, Rosebud County, Montana Ed Warner