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
Final Air Quality Permits (2010-Present)
 

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
OP2619-16 TRD2619-16 Phillips 66 Company Billings Petroleum Refinery EPA's 45-day Review ends May 15, 2020 NW ¼ Section 2, Township 1 South, Range 26 East, Yellowstone County Shawn Juers
OP3185-05 TRD3185-05 Rocky Mountain Power, LLC Hardin Generating Station Public Comment Period Ends April 20, 2020 Section 12 of Township 1 South, Range 33 East, Big Horn County Rhonda Payne
OP2967-12 TRD2967-12 Exxon Mobil Corporation Billings Terminal Appeal Period Ends April 9, 2020 Section 25, Township 1 North, Range 26 East, Yellowstone County Shawn Juers
3238-08 Malteurop North America, Inc Great Falls Malting Plant Public Comment Period Ends March 24, 2020 NE ¼ of the SE ¼ of Section 30, Township 21 North, Range 4 East, in Cascade County Ed Warner
3259-05 At Home on the Range Animal Cremation Public Comment Period Ends April 6, 2020 Section 17, Township 1 South, Range 3 East, in Gallatin County, Montana Craig Henrikson
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
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

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

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