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  2. Permitting Under the Clean Air Act

Title V Operating Permit Public Petition Deadlines in Region 8

This table lists Proposed Title V Operating Permits submitted to Region 8 and undergoing EPA's 45-day Review, including the start and end dates for EPA's 45-day review period. It also lists the start and end dates for the public's 60-day petition period
StateCompany and Facility NamePermit NumberType of Permit ActionEPA 45-Day Review
Period Start Date
EPA 45-Day Review
Period End Date

60-Day Public Petition Period Start Date
60-Day Public Petition Period End DateReview Type
ColoradoPublic Service Company of Colorado - Blue Spruce Energy Center04OPAD270RenewalTBDTBDTBDTBDSequential
ColoradoSuncor - Commerce City Refinery Plant 295OPAD108Renewal2025/10/212025/12/42025/12/52026/2/2Sequential
ColoradoDCP - Troudt Compressor Station21OPWE435Initial2025/10/212025/12/42025/12/52026/2/2Sequential
ColoradoMontrose Forest Products, LLC - Montrose Forest Products24OPMO616Initial2025/10/152025/11/282025/11/292026/1/27Sequential
ColoradoGCC America - GCC Rio Grande09OPPB327Initial2025/10/142025/11/282025/11/292026/1/27Concurrent
ColoradoTimberline Energy - Landfill Gas to Electric Facility12OPWE376Initial2025/10/142025/11/282025/11/292026/1/27Concurrent
ColoradoBlack Diamond Rockies - Milton Crude Oil Terminal20OPWE412Initial2025/10/42025/11/172025/11/182026/1/16Sequential
ColoradoWilliams Gilcrest, LLC - Wiedeman Compressor Station23OPWE504Initial2025/10/12025/11/142025/11/152026/1/13Sequential
ColoradoCrestone Peak Resources Operating - Mustang Booster Station23OPAD524Initial2025/10/12025/11/142025/11/152026/1/13Concurrent
ColoradoGrand River Gathering - Hunter Mesa Compressor Station12OPGA363Renewal2025/9/262025/11/102025/11/112026/1/9Sequential
ColoradoRocky Mountain Midstream - Powhaton Compressor Station23OPAD505Initial2025/9/262025/11/102025/11/112026/1/9Sequential
ColoradoMagellan Pipeline Terminals-Aurora Terminal17OPAD399RenewalTBDTBDTBDTBDSequential
ColoradoPublic Service Company of Colorado - Cherokee Generating Station96OPAD130RenewalTBDTBDTBDTBDSequential
ColoradoWexpro Company - Powder Wash Evaporation Facility21OPMF469Initial2025/9/32025/10/172025/10/182025/12/16Concurrent
ColoradoDCP Operating Company, LP - 70 Ranch Compressor Station20OPWE424Initial2025/9/32025/10/172025/10/182025/12/16Concurrent
ColoradoDCP Operating Company, LP - Bernhardt Compressor Station21OPWE432Initial2025/8/122025/9/252025/9/262025/11/24Sequential
ColoradoHolcim - Florence Portland Cement Plant96OPFR145Minor Modification2025/7/312025/9/152025/9/162025/11/14Sequential
ColoradoPublic Service Company of Colorado - Comanche Station96OPPB133Renewal2025/7/292025/9/112025/9/122025/11/10Sequential
ColoradoEnterprise Gas Processing - Jackrabbit Compressor Station10OPGA355Renewal2025/7/242025/9/82025/9/92025/11/7
Concurrent
MontanaRocky Mountain Power, LLC - Hardin Generating StationOP3185-06Renewal2025/9/92025/10/232025/10/242025/12/22Sequential
MontanaFlathead Electric Cooperative - Flathead Electric LFGE FacilityOP245-00Initial2025/9/62025/10/202025/10/212025/12/19Sequential
MontanaPar Montana, LLC - Billings TerminalOP2967-15Renewal2025/8/152025/9/292025/9/302025/11/28Sequential
North DakotaTharaldson Ethanol PlantAOP-28451Significant Modification2025/10/182025/12/12025/12/22026/1/30Sequential
North DakotaHess North Dakota Pipelines LLC, Hawkeye Gas FacilityAOP- 28417Renewal2025/8/22025/9/152025/9/162025/11/14Sequential
South DakotaDakota Foundry, Inc28.3301-09Modification2025/7/252025/9/82025/9/92025/11/7Sequential
South Dakota3M - Aberdeen 28.3301-09Minor Modification2025/7/252025/9/82025/9/92025/11/7Sequential
UtahTesoro Logistics Operations LLC - Truck Loading Rack and Remote Tank Farm3500008002Administrative Amendment2025/10/282025/12/112025/12/122026/2/9Sequential
UtahLhoist North America - Grantsville Lime Plant4500005005Renewal2025/10/252025/12/82025/12/92026/2/6Sequential
UtahTooele Army DepotDAQE-AN115940062-25Administrative Amendment2025/10/32025/11/172025/11/182026/1/16Sequential
UtahHF Sinclair - Woods Cross RefineryDAQE-AN101230060-25Minor Modification2025/9/162025/10/302025/10/312025/12/29Sequential
UtahECDC Environmental, LC - East Carbon Landfill700042005Renewal2025/9/102025/10/242025/10/252025/12/23Sequential
UtahNorthwest Pipeline - Moab Compressor StationDAQO-PR0106270010-25Renewal2025/9/82025/10/222025/10/232025/12/22Sequential
UtahSalt Lake Energy Systems, LLC - Power Plant at Salt Lake Valley Landfill3500604004Renewal2025/8/12025/9/152025/9/162025/11/14Sequential
UtahPacifiCorp - Hunter Power Plant1500101004Renewal2025/7/222025/9/42025/9/52025/11/3Sequential
WyomingAndeavor Gathering 1 LLC - Pinedale ComplexP0037743Renewal2025/10/232025/12/82025/12/92026/2/6Sequential
WyomingJackalope Gas Gathering Service, LLC - Bucking Horse PlantP0038035Significant Modification2025/10/152025/11/282025/11/292026/1/27Sequential
WyomingThunder Creek Gas Services, LLC - PRCC Compressor StationP0037920Renewal2025/10/92025/11/242025/11/252026/1/23Sequential
WyomingColorado Interstate Gas Company - Wamsutter Compressor Station (CIG)P0036724Renewal2025/10/92025/11/242025/11/252026/1/23Sequential
WyomingChurch & Dwight Incorporated - Green River Sodium Products PlantP0037318Renewal2025/9/302025/11/132025/11/142026/1/12Sequential
WyomingWyoming Interstate Company, LLC - Baxter Compressor StationP0022939Renewal2025/9/172025/10/312025/11/12025/12/30Sequential
WyomingBasin Electric Power Cooperative - Arvada Generating StationP0036472Renewal2025/9/172025/10/312025/11/12025/12/30Sequential
WyomingBasin Electric Power Cooperative - Hartzog Generating Station
P0036889
Renewal2025/9/132025/10/272025/10/282025/12/26Sequential
WyomingUS Realm Ventures, LLC - Doty Mountain Compressor StationP0036206Renewal2025/9/102025/10/242025/10/252025/12/23Sequential
WyomingThunder Creek Gas Services, LLC - Leavitt Compressor StationP0035803Renewal2025/9/62025/10/202025/9/212025/12/19Sequential
WyomingCity of Cheyenne Sanitary Landfill #1P0037045Renewal2025/08/052025/09/182025/09/192025/11/17Sequential
WyomingFremont County Solid Waste Disposal District - Sand Draw LandfillP0036748Renewal2025/07/302025/09/122025/09/132025/11/12Sequential

Permitting Under the Clean Air Act

  • Clean Air Act Permitting Around the Nation
    • New England Region (R1)
    • New York, New Jersey, Puerto Rico and U.S. Virgin Islands (R2)
    • Mid-Atlantic Region (R3)
    • Southeastern Region (R4)
    • Great Lakes Region (R5)
    • South Central Region (R6)
    • Midwest Region (R7)
    • Mountains and Plains Region (R8)
    • Pacific Southwest Region (R9)
      • Air Permit Delegation and PSD SIP Approval
      • Electronic Permit System and Dashboards
      • Pending and Issued Permits
      • About NSR Permitting
      • About OCS Permitting
      • About PSD Permitting
      • About Title V Permitting
      • Permitting in Arizona
      • Permitting in California
      • Permitting in Hawai'i and Pacific Islands
      • Permitting in Nevada
    • Pacific Northwest Region (R10)
  • CAA Permitting Tools & ​Related Resources
  • Outer Continental Shelf Air Permits
Contact Us About Permitting Under the Clean Air Act
Contact Us About Permitting Under the Clean Air Act to ask a question, provide feedback, or report a problem.
Last updated on October 30, 2025
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