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  2. Permitting Under the Clean Air Act

EPA Oversight of State/Tribal/Local CAA Permitting Authorities in Region 8

Listed below are relevant actions of interest and other information related to EPA's oversight of the implementation of EPA-approved Clean Air Act (CAA) permitting programs for 6 states and 1 Tribal Nation.

Actions:

  • EPA Actions on Clean Air Act Permits by States/Tribes
    • Colorado Actions
    • Montana Actions
    • North Dakota Actions
    • South Dakota Actions
    • Utah Actions
    • Wyoming Actions
    • Southern Ute Indian Tribe Actions
  • Title V Operating Permit Public Petition Deadlines in Region 8
  • Title V Program Evaluations in Region 8
  • Hotline Complaints
    • October 21, 2022, Colorado Department of Public Health and Environment Response to EPA Report Regarding Hotline Complaint No. 2021-0188
    • July 14, 2022, EPA Report on Public Employees for Environmental Responsibility Hotline Complaint No. 2021-0188, Regarding Colorado Department of Public Health and Environment Minor NSR Permit Program

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EPA Actions on Clean Air Act Draft Permits by States/Tribes 

Facility Name Location Permit Type (Number) Action Date Related Documents
Colorado Air Pollution Control Division Permits
Mountain Coal Company, LLC - West Elk Mine Gunnison County, Colorado Initial Title V (20OPGU411) Petition Order May 24, 2024 West Elk Petition Order (pdf) (478.11 KB, June 21, 2024)
Bonanza Creek Energy Operating Company, LLC

1. State Antelope O-1 Central Production Facility

2. State North Platte 42-26 Central Production Facility

3. Antelope CPF 13-21 Production Facility

4. State Pronghorn 41-32 Central Production Facility
Weld County, Colorado 1. Initial Title V (#20OPWE418)

2. Initial Title V ((#20OPWE419)

3. Initial Title V (#20OPWE417)

4. Initial Title V (#20OPWE420)
Petition Order January 1, 2024 Order Granting Petition for Objection of Four Initial Title V Permits (pdf) (5.31 MB, January 1, 2024)
DCP Operating Company, LP (DCP) - Canvasback Compressor Station Section 18, T5N, R66W, Weld County, Colorado Construction Permit (22WE0172) Comments on Draft Permit January 19, 2023 EPA Comments on Draft Construction Permit for DCP Canvasback Compressor Station (docx) (63.65 KB, January 19, 2023)
DCP Operating Company, LP (DCP) - Platteville Natural Gas Processing Plant Weld County, Colorado Title V Operating Permit Renewal (02OPWEE252) Petition Order April 4, 2024 Order Granting in Part and Denying in Part Petition For Objection (pdf) (385.34 KB, April 4, 2024)
Cripple Creek & Victor (CC&V) Gold Mine 1632 Co Rd 82, Cripple Creek, Colorado 80813 Construction Permit (98TE0545) Comments on Draft Permit December 9, 2022 EPA Comments on CDPHE Draft Construction Permit for CC&V Gold Mine (pdf) (103.82 KB, December 9, 2022)
Phillips 66 Pipeline, LLC - Denver Terminal Commerce City, Colorado Title V Operating Permit Renewal (96OPAD160) Comments on Draft Permit April 3, 2023 Phillips 66 Pipeline, LLC - Denver Terminal: EPA Comments on Draft Title V Operating Permit (docx) (75.1 KB, April 3, 2023)
Suncor Energy, Inc. - Plant 1 and Plant 3 Refinery Commerce City, Colorado Title V Operating Permit Renewal (96OPAD120) Comments on Draft Permit July 13, 2022 EPA Comments on Draft Operating Permit for Suncor Energy, Inc. - Plant 1 and Plant 3 Refinery (docx) (121.77 KB, July 13, 2022)
Suncor Energy (U.S.A.), Inc. - Plant 1 and Plant 3 Refinery Commerce City, Colorado Title V Operating Permit Renewal (96OPAD120) Petition Order December 30, 2024 Suncor Energy, Inc. - Plant 1 and Plant 3 Refinery Order Granting in Part and Denying in Part a Petition for Objection to a Title V Operating Permit (pdf) (1.13 MB, December 30, 2024)
Suncor Energy (U.S.A.), Inc. - Plant 2 Refinery Commerce City, Colorado Title V Operating Permit Renewal (95OPAD108) Comments and Partial Objection to Proposed Permit

March 25, 2022

UPDATES: On June 22, 2022, the EPA Region 8 received a new proposed title V operating permit for this Suncor Plant 2 facility in response to the EPA's March 25, 2022, letter objecting to the issuance of the permit. 

On July 31, 2023, the EPA Administrator signed the Administrative Order granting in part and denying in part petitions for objections to the title V operating permit issued to Suncor Energy (U.S.A.), Inc. Commerce City Refinery, Plant 2 (East) in Adams County, Colorado. Both petitions were submitted on October 11, 2022, pursuant to section 505(b)(2) of the Clean Air Act (CAA). The first petition was submitted by counsel from Earthjustice on behalf of Elyria and Swansea Neighborhood Association, Cultivando, Colorado Latino Forum, GreenLatinos, Center for Biological Diversity and Sierra Club. The second petition was submitted by 350 Colorado. Both petitions request that the EPA Administrator object to operating permit NO. 95OPAD108 issued by the Colorado Department of Public Health and Environment.

In the near future, EPA will public a Federal Register notice. That notice will establish the relevant deadline for requesting judicial review of the portions of the Order that deny issues in the petition, pursuant to CAA sections 307(b)(1) and 505(b)(2).

EPA comments on Suncor Energy Refinery Plant 2 renewal (pdf) (219.01 KB, March 25, 2022

EPA Suncor Plant 2 Title V Objection Letter Response (pdf) (98.36 KB, August 5, 2022)

Administrative Order - Suncor Energy (U.S.A.), Inc. Commerce City Refinery, Plant 2 (East) Operating Permit (pdf) (1,390 KB, July 31, 2023)

Terra Energy Partners, Rocky Mountain, LLC - Parachute Water Management Facility Garfield County, Colorado Initial Title V Operating Permit (090PGA330) Petition Order June 14, 2023 Order Granting in Part and Denying In Part Petitions for Objection (pdf) (17.96 MB, June 14, 2023)
Facility Name Location Permit Type Action Date Related Documents
Montana Air, Energy and Mining Division Permits
None at this time          
Facility Name Location Permit Type Action Date Related Documents
North Dakota Division of Air Quality Permits
Epitome Energy, LLC Grand Forks, North Dakota PSD Construction Permit
(ACP-18210v1.0)
Comments on Draft Permit April 26, 2024 EPA Comments on Draft PSD Permit for Epitome Energy, LLC (pdf) (196.74 KB, April 26, 2024)
Dakota Carbon Center East Project, LLC Oliver County, North Dakota Construction Permit
(ACP-18194 v1.0)
Comments on Draft Permit October 20, 2023 EPA Comments on Dakota Carbon Center East Project LLC Draft Construction Permit (docx) (74.59 KB, October 20, 2023)
Facility Name Location Permit Type Action Date Related Documents
South Dakota Air Quality Program Permits
East Dakotas Renewable Energy, LLC - Centerville, SD Biogas Facility Centerville, South Dakota Draft Title V Operating Permit Comments on Draft Permit May 24, 2024 EPA Comments on East Dakotas Renewable Energy, LLC, Centerville, South Dakota Draft Title V Operating Permit (pdf) (171.27 KB, May 24, 2024)
POET Biorefining - Hudson, LLC

29619 Spur Avenue, Hudson, South Dakota  57034

Draft Title V Operating Permit Comments on Draft Permit January 12, 2024 EPA Comments on POET Biorefining - Hudson LLC Draft Title V Operating Permit (pdf) (397.4 KB)
Utah Division of Air Quality Permits
Facility Name Location Permit Type Action Date Related Documents
Wasatch Integrated Waste Management District - Davis Landfill Layton, Utah Title V Renewal Permit (1100033004) Comments on Draft Permit June 18, 2024 Public comment letter - Wasatch Integrated Waste District - Davis-Landfill (pdf) (301.69 KB, June 21, 2024)
PacifiCorp Power Marketing - West Valley Power Plant West Valley City, Utah Title V Renewal Permit (3500527005) Comments on Draft Permit April 15, 2024 EPA Comments on Draft Title V Operating Permit Renewal for PacifiCorp - West Valley Power Plant (docx) (108.4 KB, April 15, 2024)
HF Sinclair - Woods Cross Refinery 1070 West 500 South, West Bountiful, Utah  84087 Draft Title V Operating Permit Comments on Draft Permit December 19, 2023

EPA Comments on Draft Title V Operating Permit for HF Sinclair Woods Cross Refinery (docx) (133.42 KB)

HF Sinclair Woods Cross Refinery 1-mi EJSCREEN Report (pdf) (1.21 MB)

Weir Minerals, Inc. - Weir Minerals Facility 3459 South 700 West Salt Lake City, Utah  84119

Modification to Approval Order (DAQE-AN10550006-18)

Comments on Draft Approval Order December 6, 2022 EPA Comments on Draft Approval Order Modification for Weir Minerals Facility (docx) (80.79 KB, December 6, 2022)
US Magnesium, LLC - Rowley Plant 15 Miles North Exit 77, I-80, Rowley, Utah 84704 Title V Reopening for Cause by EPA Comments on Draft Permit May 11, 2023 EPA Comments on Draft Title V Permit Reopening for Cause for US Magnesium Rowley Plant (docx) (82.16 KB, May 11, 2023)
Wyoming Air Quality Division Permits
Facility Name Location Permit Type Action Date Related Documents
None at this time          
Southern Ute Air Quality Program Permits
Facility Name Location Permit Type Action Date Related Documents
None at this time          

Map of Region 8

Region 8 States

Region 8 CAA Permitting Focus

  • Region 8 CAA Permitting Home
  • Permits Out for Public Comment
  • EPA Pending Permits
  • EPA Issued Permits
  • State/Tribal/Local Authorities
    • Colorado
    • Montana
    • North Dakota
    • South Dakota
    • Southern Ute Indian Tribe
    • Utah
    • Wyoming
  • About Region 8

National Supporting Resources

  • CAA Permitting Home
  • New Source Review (NSR) Program
  • Title V Program
  • Tribal Permit Program
  • Outer Continental ​Shelf Permit Program
  • CAA Permitting Tools & ​Related Resources
  • Air Permitting Terms
  • Where You Live

Air Permitting Policy & Guidance

  • Search Documents
  • NSR Policy & Guidance
  • Title V Policy & Guidance
  • Title V Petition Database

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Last updated on April 3, 2025
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