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  1. Home
  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


Facility Name Location Type Permit Number Status Related Documents Contact
PSD Permits
None at this time          
Facility Name Location Type Permit Number Status Related Documents Contact
NA NSR Permits (i.e., major sources in nonattainment areas)
None at this time            
Facility Name Location Type Permit Number Status Related Documents Contact
Minor NSR Permits
MPLX (Owned by Andeavor Field Services, LLC) - Ironhorse Complex Gas Plant Uintah and Ouray Indian Reservation, Uintah County, Utah Minor Modification at Existing Major Source MNSR-OU-000025-2024.001 Under Review Docket #EPA-R08-OAR-2024-0033 Julie Merkel
(merkel.julie@epa.gov)
MPLX (Owned by Andeavor Field Services, LLC) - Rupple Compressor Station Fort Berthold Indian Reservation, McLean County, North Dakota Synthetic Minor Modification at Existing Minor Source SMNSR-TAT-000178-2024.002 Under Review Docket #EPA-R08-OAR-2025-0255 Catherine Collins
(collins.catherine@epa.gov)
(303) 312-6739
Deseret Generation and Transmission Cooperative - Bonanza Power Plant Uintah and Ouray Indian Reservation, Uintah County, Utah

Synthetic Minor Modification at Existing Major Source

(includes existing Minor NSR Revision)

SMNSR-UO-000004-2023.006

(MNSR-UO-000004-2023.005)
Final Permits in Process Docket #EPA-R08-OAR-2023-0233 Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
Great American Mining, Inc. - Osprey Pad 71 Fort Berthold Indian Reservation, Mountrail County, North Dakota True Minor TMNSR-TAT-008161-2021.001 On Hold (Applicant Requested) Docket #EPA-R08-OAR-2021-0655 Claudia Smith
(smith.claudia@epa.gov)
(303) 312-6520
Targa Badlands, LLC - Blue Buttes Compressor Station  Fort Berthold Indian Reservation, McKenzie County, North Dakota Synthetic Minor SMNSR-TAT-000676-2023.004 Revised Application Under Review Docket #EPA-R08-OAR-2023-0425 Claudia Smith
(smith.claudia@epa.gov)
(303) 312-6520
Thunder Butte Petroleum Services, Inc. - MHA Nation Topping Plant Fort Berthold Indian Reservation, Ward County, North Dakota Synthetic Minor Modification at Existing Synthetic Minor Source SMNSR-TAT-000781-2023.004 Under Review Thunder Butte Petroleum Services, Inc. - MHA Nation Topping Plant - Permit, Application & Supporting Documentation

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

WBI Energy Transmission, Inc. - Hardin Compressor Station Crow Indian Reservation, Big Horn County, Montana Minor Modification at Existing  Major Source MNSR-C-000001-2025.001 Under Review Docket ID #EPA-R08-OAR-2025-0230 James Floyd (floyd.james@epa.gov)
(303) 312-6975
Facility Name Location Type Permit Number Status Related Documents Contact
Part 71 Title V Operating Permits
Devon Energy - Bull Moose 28-27H Pad Fort Berthold Indian Reservation, Dunn County, North Dakota Initial Permit V-TAT-008193-2025.00 Under Review Docket #EPA-R08-OAR-2025-0252 Christopher Razzazian (razzazian.christopher@epa.gov)
(303) 312-6648
MI3 Petroleum Engineering (owned by Wind River Energy Commission)  - Steamboat Butte C1/C3 Tank Battery Wind River Indian Reservation, Fremont County, Wyoming First Renewal V-WR-000004-2024.00 Under Review Docket #EPA-R08-OAR-2024-0582 Catherine Collins
(collins.catherine@epa.gov)
(303) 312-6739
MI3 Petroleum Engineering (owned by Wind River Energy Commission) - Steamboat Butte E5 Tank Battery Wind River Indian Reservation, Fremont County, Wyoming First Renewal V-WR-000005-2024.00 Under Review Docket #EPA-R08-OAR-2025-0034 Matthew Pollard
(pollard.matthew@epa.gov)
(303) 312-6878
MPLX (Owned by Andeavor Field Services, LLC) - Chapita Compressor Station Uintah & Ouray Indian Reservation, Uintah County, Utah Second Renewal

V-UO-000012-2023.00

Under Review Docket #EPA-R08-OAR-2023-0628 Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
MPLX (Owned by Andeavor Field Services, LLC) - Ironhorse Complex Gas Plant Uintah & Ouray Indian Reservation, Uintah County, Utah Initial Permit V-UO-000025-2014.00 Under Review Docket #EPA-R08-OAR-2019-0223 Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
MPLX (Owned by Andeavor Field Services, LLC) - Wonsits Valley Compressor Station Uintah & Ouray Indian Reservation, Uintah County, Utah Second Renewal V-UO-000005-2025.00 Under Review Docket #EPA-R08-OAR-2025-0251 James Floyd (floyd.james@epa.gov)
(303) 312-6975
MPLX (Owned by Andeavor Field Services, LLC) - Redwash 24B Gas Plant Uintah & Ouray Indian Reservation, Uintah County, Utah Second Renewal V-UO-000001-2024.00 Under Review Docket #EPA-R08-OAR-2025-0008 Julie Merkel
(merkel.julie@epa.gov)
EOG Resources, Incorporated - Clarks Creek Central Facility Fort Berthold Indian Reservation, McKenzie County, North Dakota First Renewal  V-TAT-000820-2024.00 Under Review Docket #EPA-R08-OAR-2024-0383 Matthew Pollard
(pollard.matthew@epa.gov)
(303) 312-6878
Marathon Oil Corporation - Clara USA CTB - Michelle USA CTB Fort Berthold Indian Reservation, McKenzie County, North Dakota Initial Permit V-TAT-000859-2022.00 Under Review Docket #EPA-R08-OAR-2022-0823 Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
Marathon Oil Corporation - Earl Pennington USA Well Pad Fort Berthold Indian Reservation, Mountrail County, North Dakota Initial Permit V-TAT--0000004-2022.00 Under Review Docket #EPA-R08-OAR-2022-0817 Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
Marathon Oil Corporation - Lang USA Well Pad Fort Berthold Indian Reservation, Mountrail County, North Dakota Initial Permit V-TAT-008137-2021.00 Under Review Docket #EPA-R08-OAR-2021-0816 Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
Marathon Oil Corporation - Luther Weidman USA Well Pad Fort Berthold Indian Reservation, Mountrail County, North Dakota Initial Permit V-TAT-008086-2021.00 Under Review Docket #EPA-R08-OAR-2021-0666 Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
Marathon Oil Corporation - Pennington USA 31 Well Pad Fort Berthold Indian Reservation, Mountrail County, North Dakota Initial Permit V-TAT-000085-2021.00 Under Review Docket #EPA-R08-OAR-2021-0677 Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
Marathon Oil Corporation - Quale USA Well Pad Fort Berthold Indian Reservation, McKenzie County, North Dakota Initial Permit V-TAT-000501-2021.00 Under Review Docket #EPA-R08-OAR-2021-0129 Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
MPLX (Owned by Andeavor Field Services, LLC) - Coyote Wash Compressor Station Uintah & Ouray Indian Reservation, Uintah County, Utah Second Renewal V-UO-000015-2025.00 Under Review Docket #EPA-R08-OAR-2025-0254 Julia Witteman
(witteman.julia@epa.gov)
(303) 312-6156
MPLX (Owned by Andeavor Field Services, LLC) - Walker Hollow Compressor Station Uintah & Ouray Indian Reservation, Uintah County, Utah First Renewal V-UO-000979-2023.00 Under Review Docket #EPA-R08-OAR-2023-0158 Julia Witteman
(witteman.julia@epa.gov)
(303) 312-6156
MPLX (Owned by Andeavor Field Services, LLC) - Red Wash 24B Gas Plant Uintah & Ouray Indian Reservation, Uintah County, Utah Second Renewal V-UO-000001-2024.00 Under Review Docket #EPA-R08-OAR-2025-0008 Julie Merkel
(merkel.julie@epa.gov)
Northern Border Pipeline Company - Compressor Station #2 Fort Peck Indian Reservation, Roosevelt County, Montana Third Renewal V-FP-000001-2025.00 Under Review Docket #EPA-R08-OAR-2025-0150 Julie Merkel
(merkel.julie@epa.gov)
Oasis Petroleum North America, LLC - Disco 8-28A Central Tank Battery Fort Berthold Indian Reservation, Mountrail County, North Dakota Initial Permit V-TAT-008181-2022.00 Under Review Docket #EPA-R08-OAR-2022-0748 Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
Targa Badlands, LLC - Blue Buttes Compressor Station and Pump Station Fort Berthold Indian Reservation, McKenzie County, North Dakota First Renewal

(includes Minor Modification)
V-TAT-000676-2024.00 Under Review Docket #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 Station

Fort Berthold Indian Reservation, Dunn County, North Dakota

First Renewal V-TAT-000611-2023.00 Under Review

Docket #EPA-R08-OAR-2023-0421

Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
Targa Badlands, LLC - Junction Compressor Station Fort Berthold Indian Reservation, McKenzie County, North Dakota First Renewal V-TAT-000670-2024.00 Under Review Docket #EPA-R08-OAR-2024-0407 Catherine Collins
(collins.catherine@epa.gov)
(303) 312-6739
Targa Badlands, LLC - TAT-Blue Buttes Compressor Station Fort Berthold Indian Reservation, McKenzie County, North Dakota First Renewal V-TAT-000839-2024.00 Under Review Docket #EPA-R08-OAR-2024-0560 Zachary Stewart (stewart.zachary@epa.gov)
Wexpro Company - Island Compressor Station Uintah and Ouray Indian Reservation, Uintah County, Utah Second Renewal V-UO-000011-2024.00 Under Review Docket #EPA-R08-OAR-2024-0612 Zachary Stewart (stewart.zachary@epa.gov)
WPX Energy Williston, LLC - Arikara 15-22H Pad Fort Berthold Indian Reservation, Mountrail County, North Dakota Initial Permit V-TAT-000062-2019.00 Under Review Docket #EPA-R08-OAR-2019-0366 Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
WPX Energy Williston, LLC - Bird Bear 35-26H Pad Fort Berthold Indian Reservation, McKenzie County, North Dakota Initial Permit V-TAT-008095-2021.00 Under Review Docket #EPA-R08-OAR-2021-0077 Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
WPX Energy Williston, LLC - Blue Racer 14-11H Pad Fort Berthold Indian Reservation, McKenzie County, North Dakota Initial Permit V-TAT-008115-2022.00 Under Review Docket #EPA-R08-OAR-2022-0350 Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
WPX Energy Williston, LLC - Good Voice 34-27H Pad Fort Berthold Indian Reservation, McKenzie County, North Dakota Initial Permit V-TAT-000632-2020.00 Under Review Docket #EPA-R08-OAR-2020-0679 Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
WPX Energy Williston, LLC - Hidatsa North 14-23H Pad Fort Berthold Indian Reservation, Mountrail County, North Dakota Initial Permit  V-TAT-000060-2019.00 Under Review Docket #EPA-R08-OAR-2019-0444 Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
WPX Energy Williston, LLC - Joseph Eagle 19-18H Pad Fort Berthold Indian Reservation, Dunn County, North Dakota Initial Permit V-TAT-000815-2021.00 Under Review Docket #EPA-R08-OAR-2021-0670 Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
WPX Energy Williston, LLC - Lawrence Bull 1-12H Pad Fort Berthold Indian Reservation, Dunn County, North Dakota Initial Permit V-TAT-000636-2020.00 Under Review Docket #EPA-R08-OAR-2020-0436 Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
WPX Energy Williston, LLC - Lead Woman Pad Fort Berthold Indian Reservation, McKenzie County, North Dakota Initial Permit V-TAT-008136-2020.00 Under Review Docket #EPA-R08-OAR-2020-0247 Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
WPX Energy Williston, LLC - Mandaree 30-31H Pad Fort Berthold Indian Reservation, Dunn County, North Dakota Initial Permit V-TAT-000182-2018.00 Under Review

Docket #EPA-R08-OAR-2023-0359

Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
WPX Energy Williston, LLC - Moccasin Creek 14-11 Well Pad Fort Berthold Indian Reservation, Dunn County, North Dakota Initial Permit V-TAT-000045-2024.00 Under Review Docket #EPA-R08-OAR-2024-0164 Matthew Pollard
(pollard.matthew@epa.gov)
(303) 312-6878
WPX Energy Williston, LLC - Nancy Dancing Bull 1-36H Pad Fort Berthold Indian Reservation, Dunn County, North Dakota Initial Permit V-TAT-008092-2022.00 Under Review Docket #EPA-R08-OAR-2022-0486 Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
WPX Energy Williston, LLC - Pheasant 33-28H Pad Fort Berthold Indian Reservation, McKenzie County, North Dakota Initial Permit V-TAT-008103-2021.00 Under Review Docket #EPA-R08-OAR-2021-0796 Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
WPX Energy Williston, LLC - Plenty Sweet Gras 18-19H Pad Fort Berthold Indian Reservation, McKenzie County, North Dakota Initial Permit V-TAT-000049-2020.00 Under Review Docket #EPA-R08-OAR-2020-0420 Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
WPX Energy Williston, LLC - Rubia 16-24H Pad Fort Berthold Indian Reservation, McKenzie County, North Dakota Initial Permit V-TAT-000620-2022.00 Under Review Docket #EPA-R08-OAR-2022-0372 Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
WPX Energy Williston, LLC - St. Anthony 9-16H Pad Fort Berthold Indian Reservation, Dunn County, North Dakota Initial Permit V-TAT-008104-2022.00 Under Review Docket #EPA-R08-OAR-2022-0487 Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
WPX Energy Williston, LLC - Tri Unit Pad Fort Berthold Indian Reservation, Dunn County, North Dakota Initial Permit V-TAT-000641-2022.00 Under Review Docket #

EPA-R08-OAR-2022-0977

Suman Kunwar
(kunwar.suman@epa.gov)
(303) 312-6095
WPX Energy Williston, LLC - Two Shields Butte 13-21 Centralized Tank Battery Fort Berthold Indian Reservation, Dunn County, North Dakota Initial Permit V-TAT-000816-2024.00 Under Review Docket #EPA-R08-OAR-2024-0165 Matthew Pollard
(pollard.matthew@epa.gov)
(303) 312-6878

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Last updated on May 20, 2025
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