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  2. Permitting Under the Clean Air Act

CAA Permit Actions Pending by EPA in Region 8

EPA's Mountains and Plains region – Region 8 – directly implements CAA permitting programs for 27 Tribal Nations in Colorado, Montana, North Dakota, South Dakota, Utah, and Wyoming, with the exception of Title V Operating Permits on the Southern Ute Indian Reservation.

Listed below are air pollution control permit actions (indicated by permit type and facility) that are pending issuance by Region 8 with the status of the action in the issuance process and the appropriate staff contact to direct questions related to the permit action.

On this page:
  • PSD Permits
  • NA NSR Permits
  • Minor NSR Permits
  • Part 71 Title V Permits

​IMPORTANT NOTES: *When viewing final documents in the dockets on regulations.gov that are electronically signed, to view the valid signature, you may need to select "Enable Editing." Warning that if you actually edit the signed document, the signature will become invalid in your downloaded copy of the document. **If the provided docket link directs you to the beta version of the Regulations.gov site, to access the docket, use the search box and enter the docket number for the permit action. For assistance in accessing the docket, the eRulemaking Help Desk will be available during normal working hours at 1-877-378-5457 (toll free). 

The following links may exit the site


PSD Permits
Facility NameLocationTypePermit NumberStatusRelated DocumentsContact
None at this time      
NA NSR Permits (i.e., major sources in nonattainment areas)
Facility NameLocationTypePermit NumberStatusRelated DocumentsContact
None at this time      
Minor NSR Permits
Facility NameLocationTypePermit NumberStatusRelated DocumentsContact
Caerus Uintah, LLC - Willow Creek Compressor StationUintah and Ouray Indian Reservation, Uintah County, UtahSynthetic Minor (Revision)SMNSR-UO-001878-2025.002Under ReviewDocket #EPA-R08-OAR-2025-0750Matthew Pollard
(pollard.matthew@epa.gov)
(303) 312-6878
MPLX (Owned by Andeavor Field Services, LLC) - Ironhorse Complex Gas PlantUintah and Ouray Indian Reservation, Uintah County, UtahMinor Modification at Existing Major SourceMNSR-OU-000025-2024.001Under ReviewDocket #EPA-R08-OAR-2024-0033Julie Merkel
(merkel.julie@epa.gov)
MPLX (Owned by Andeavor Field Services, LLC) - Rupple Compressor StationFort Berthold Indian Reservation, McLean County, North DakotaSynthetic Minor Modification at Existing Minor SourceSMNSR-TAT-000178-2024.002Under ReviewDocket #EPA-R08-OAR-2025-0255Catherine Collins
(collins.catherine@epa.gov)
(303) 312-6739
Great American Mining, Inc. - Osprey Pad 71Fort Berthold Indian Reservation, Mountrail County, North DakotaTrue MinorTMNSR-TAT-008161-2021.001On Hold (Applicant Requested)Docket #EPA-R08-OAR-2021-0655Claudia Smith
(smith.claudia@epa.gov)
(303) 312-6520
Targa Badlands, LLC - Blue Buttes Compressor Station Fort Berthold Indian Reservation, McKenzie County, North DakotaSynthetic MinorSMNSR-TAT-000676-2023.004Revised Application Under ReviewDocket #EPA-R08-OAR-2023-0425Claudia Smith
(smith.claudia@epa.gov)
(303) 312-6520
Thunder Butte Petroleum Services, Inc. - MHA Nation Topping PlantFort Berthold Indian Reservation, Ward County, North DakotaSynthetic Minor Modification at Existing Synthetic Minor SourceSMNSR-TAT-000781-2023.004Under ReviewThunder Butte Petroleum Services, Inc. - MHA Nation Topping Plant - Permit, Application & Supporting DocumentationSuman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
WBI Energy Transmission, Inc. - Hardin Compressor StationCrow Indian Reservation, Big Horn County, MontanaMinor Modification at Existing  Major SourceMNSR-C-000001-2025.001Under ReviewDocket ID #EPA-R08-OAR-2025-0230James Floyd (floyd.james@epa.gov)
(303) 312-6975
Part 71 Title V Operating Permits
Facility NameLocationTypePermit NumberStatusRelated DocumentsContact
Devon Energy - Bull Moose 28-27H PadFort Berthold Indian Reservation, Dunn County, North DakotaInitial PermitV-TAT-008193-2025.00Under ReviewDocket #EPA-R08-OAR-2025-0252Christopher Razzazian (razzazian.christopher@epa.gov)
(303) 312-6648
MI3 Petroleum Engineering (owned by Wind River Energy Commission)  - Steamboat Butte C1/C3 Tank BatteryWind River Indian Reservation, Fremont County, WyomingFirst RenewalV-WR-000004-2024.00Under ReviewDocket #EPA-R08-OAR-2024-0582Catherine Collins
(collins.catherine@epa.gov)
(303) 312-6739
MI3 Petroleum Engineering (owned by Wind River Energy Commission) - Steamboat Butte E5 Tank BatteryWind River Indian Reservation, Fremont County, WyomingFirst RenewalV-WR-000005-2024.00Under ReviewDocket #EPA-R08-OAR-2025-0034Matthew Pollard
(pollard.matthew@epa.gov)
(303) 312-6878
MPLX (Owned by Andeavor Field Services, LLC) - Chapita Compressor StationUintah & Ouray Indian Reservation, Uintah County, UtahSecond RenewalV-UO-000012-2023.00Under ReviewDocket #EPA-R08-OAR-2023-0628Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
MPLX (Owned by Andeavor Field Services, LLC) - Ironhorse Complex Gas PlantUintah & Ouray Indian Reservation, Uintah County, UtahInitial PermitV-UO-000025-2014.00Under ReviewDocket #EPA-R08-OAR-2019-0223Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
MPLX (Owned by Andeavor Field Services, LLC) - Wonsits Valley Compressor StationUintah & Ouray Indian Reservation, Uintah County, UtahSecond RenewalV-UO-000005-2025.00Under ReviewDocket #EPA-R08-OAR-2025-0251James Floyd (floyd.james@epa.gov)
(303) 312-6975
MPLX (Owned by Andeavor Field Services, LLC) - Redwash 24B Gas PlantUintah & Ouray Indian Reservation, Uintah County, UtahSecond RenewalV-UO-000001-2024.00Under ReviewDocket #EPA-R08-OAR-2025-0008Julie Merkel
(merkel.julie@epa.gov)
EOG Resources, Incorporated - Clarks Creek Central FacilityFort Berthold Indian Reservation, McKenzie County, North DakotaFirst Renewal V-TAT-000820-2024.00Under ReviewDocket #EPA-R08-OAR-2024-0383Matthew Pollard
(pollard.matthew@epa.gov)
(303) 312-6878
Marathon Oil Corporation - Clara USA CTB - Michelle USA CTBFort Berthold Indian Reservation, McKenzie County, North DakotaInitial PermitV-TAT-000859-2022.00Under ReviewDocket #EPA-R08-OAR-2022-0823Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
Marathon Oil Corporation - Earl Pennington USA Well PadFort Berthold Indian Reservation, Mountrail County, North DakotaInitial PermitV-TAT--0000004-2022.00Under ReviewDocket #EPA-R08-OAR-2022-0817Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
Marathon Oil Corporation - Lang USA Well PadFort Berthold Indian Reservation, Mountrail County, North DakotaInitial PermitV-TAT-008137-2021.00Under ReviewDocket #EPA-R08-OAR-2021-0816Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
Marathon Oil Corporation - Luther Weidman USA Well PadFort Berthold Indian Reservation, Mountrail County, North DakotaInitial PermitV-TAT-008086-2021.00Under ReviewDocket #EPA-R08-OAR-2021-0666Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
Marathon Oil Corporation - Pennington USA 31 Well PadFort Berthold Indian Reservation, Mountrail County, North DakotaInitial PermitV-TAT-000085-2021.00Under ReviewDocket #EPA-R08-OAR-2021-0677Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
Marathon Oil Corporation - Quale USA Well PadFort Berthold Indian Reservation, McKenzie County, North DakotaInitial PermitV-TAT-000501-2021.00Under ReviewDocket #EPA-R08-OAR-2021-0129Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
MPLX (Owned by Andeavor Field Services, LLC) - Coyote Wash Compressor StationUintah & Ouray Indian Reservation, Uintah County, UtahSecond RenewalV-UO-000015-2025.00Under ReviewDocket #EPA-R08-OAR-2025-0254Julia Witteman
(witteman.julia@epa.gov)
(303) 312-6156
MPLX (Owned by Andeavor Field Services, LLC) - Walker Hollow Compressor StationUintah & Ouray Indian Reservation, Uintah County, UtahFirst RenewalV-UO-000979-2023.00Under ReviewDocket #EPA-R08-OAR-2023-0158Julia Witteman
(witteman.julia@epa.gov)
(303) 312-6156
MPLX (Owned by Andeavor Field Services, LLC) - Red Wash 24B Gas PlantUintah & Ouray Indian Reservation, Uintah County, UtahSecond RenewalV-UO-000001-2024.00Under ReviewDocket #EPA-R08-OAR-2025-0008Julie Merkel
(merkel.julie@epa.gov)
Northern Border Pipeline Company - Compressor Station #2Fort Peck Indian Reservation, Roosevelt County, MontanaThird RenewalV-FP-000001-2025.00Under ReviewDocket #EPA-R08-OAR-2025-0150Julie Merkel
(merkel.julie@epa.gov)
Oasis Petroleum North America, LLC - Disco 8-28A Central Tank BatteryFort Berthold Indian Reservation, Mountrail County, North DakotaInitial PermitV-TAT-008181-2022.00Under ReviewDocket #EPA-R08-OAR-2022-0748Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
Targa Badlands, LLC - Blue Buttes Compressor Station and Pump StationFort Berthold Indian Reservation, McKenzie County, North DakotaFirst Renewal

(includes Minor Modification)
V-TAT-000676-2024.00Under ReviewDocket #EPA-R08-OAR-2024-0447

(Minor Modification Docket #EPA-R08-OAR-2020-0208)
Catherine Collins
(collins.catherine@epa.gov)
(303) 312-6739
Targa Badlands, LLC - Johnson Compressor StationFort Berthold Indian Reservation, Dunn County, North DakotaFirst RenewalV-TAT-000611-2023.00Under ReviewDocket #EPA-R08-OAR-2023-0421Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
Targa Badlands, LLC - Junction Compressor StationFort Berthold Indian Reservation, McKenzie County, North DakotaFirst RenewalV-TAT-000670-2024.00Under ReviewDocket #EPA-R08-OAR-2024-0407Catherine Collins
(collins.catherine@epa.gov)
(303) 312-6739
Targa Badlands, LLC - TAT-Blue Buttes Compressor StationFort Berthold Indian Reservation, McKenzie County, North DakotaFirst RenewalV-TAT-000839-2024.00Under ReviewDocket #EPA-R08-OAR-2024-0560Zachary Stewart (stewart.zachary@epa.gov)
Wexpro Company - Island Compressor StationUintah and Ouray Indian Reservation, Uintah County, UtahSecond RenewalV-UO-000011-2024.00Under ReviewDocket #EPA-R08-OAR-2024-0612Zachary Stewart (stewart.zachary@epa.gov)
WPX Energy Williston, LLC - Arikara 15-22H PadFort Berthold Indian Reservation, Mountrail County, North DakotaInitial PermitV-TAT-000062-2019.00Under ReviewDocket #EPA-R08-OAR-2019-0366Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
WPX Energy Williston, LLC - Bird Bear 35-26H PadFort Berthold Indian Reservation, McKenzie County, North DakotaInitial PermitV-TAT-008095-2021.00Under ReviewDocket #EPA-R08-OAR-2021-0077Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
WPX Energy Williston, LLC - Blue Racer 14-11H PadFort Berthold Indian Reservation, McKenzie County, North DakotaInitial PermitV-TAT-008115-2022.00Under ReviewDocket #EPA-R08-OAR-2022-0350Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
WPX Energy Williston, LLC - Good Voice 34-27H PadFort Berthold Indian Reservation, McKenzie County, North DakotaInitial PermitV-TAT-000632-2020.00Under ReviewDocket #EPA-R08-OAR-2020-0679Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
WPX Energy Williston, LLC - Hidatsa North 14-23H PadFort Berthold Indian Reservation, Mountrail County, North DakotaInitial Permit V-TAT-000060-2019.00Under ReviewDocket #EPA-R08-OAR-2019-0444Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
WPX Energy Williston, LLC - Joseph Eagle 19-18H PadFort Berthold Indian Reservation, Dunn County, North DakotaInitial PermitV-TAT-000815-2021.00Under ReviewDocket #EPA-R08-OAR-2021-0670Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
WPX Energy Williston, LLC - Lawrence Bull 1-12H PadFort Berthold Indian Reservation, Dunn County, North DakotaInitial PermitV-TAT-000636-2020.00Under ReviewDocket #EPA-R08-OAR-2020-0436Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
WPX Energy Williston, LLC - Lead Woman PadFort Berthold Indian Reservation, McKenzie County, North DakotaInitial PermitV-TAT-008136-2020.00Under ReviewDocket #EPA-R08-OAR-2020-0247Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
WPX Energy Williston, LLC - Mandaree 30-31H PadFort Berthold Indian Reservation, Dunn County, North DakotaInitial PermitV-TAT-000182-2018.00Under ReviewDocket #EPA-R08-OAR-2023-0359Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
WPX Energy Williston, LLC - Moccasin Creek 14-11 Well PadFort Berthold Indian Reservation, Dunn County, North DakotaInitial PermitV-TAT-000045-2024.00Under ReviewDocket #EPA-R08-OAR-2024-0164Matthew Pollard
(pollard.matthew@epa.gov)
(303) 312-6878
WPX Energy Williston, LLC - Nancy Dancing Bull 1-36H PadFort Berthold Indian Reservation, Dunn County, North DakotaInitial PermitV-TAT-008092-2022.00Under ReviewDocket #EPA-R08-OAR-2022-0486Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
WPX Energy Williston, LLC - Pheasant 33-28H PadFort Berthold Indian Reservation, McKenzie County, North DakotaInitial PermitV-TAT-008103-2021.00Under ReviewDocket #EPA-R08-OAR-2021-0796Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
WPX Energy Williston, LLC - Plenty Sweet Gras 18-19H PadFort Berthold Indian Reservation, McKenzie County, North DakotaInitial PermitV-TAT-000049-2020.00Under ReviewDocket #EPA-R08-OAR-2020-0420Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
WPX Energy Williston, LLC - Rubia 16-24H PadFort Berthold Indian Reservation, McKenzie County, North DakotaInitial PermitV-TAT-000620-2022.00Under ReviewDocket #EPA-R08-OAR-2022-0372Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
WPX Energy Williston, LLC - St. Anthony 9-16H PadFort Berthold Indian Reservation, Dunn County, North DakotaInitial PermitV-TAT-008104-2022.00Under ReviewDocket #EPA-R08-OAR-2022-0487Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
WPX Energy Williston, LLC - Tri Unit PadFort Berthold Indian Reservation, Dunn County, North DakotaInitial PermitV-TAT-000641-2022.00Under Review

Docket #

EPA-R08-OAR-2022-0977

Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095

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Last updated on July 8, 2025
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