CAA Permits Issued by EPA in Region 8
EPA's Mountains and Plains region – Region 8 – 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
The CAA permits that have been issued and are being implemented by Region 8 are listed below, alphabetically by owner/operator name for each permit type.
- PSD Permits
- Nonattainment NSR Permits
- Minor NSR Permits
- Minor NSR General Permits
- Minor NSR Permits by Rule
- Minor NSR Federal Implementation Plans
- FIP for Oil and Natural Gas True Minor Sources
- Part 71 Title V Operating Permits
- Part 61 NESHAP Construction Approvals
IMPORTANT NOTES: *When viewing final documents in the dockets on regulations.gov that are electronically signed in Microsoft Word, 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 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).
Last Updated June 13, 2025
PSD Permits
| Operator Name - Facility Name | Location | Type | Date Issued | Related Documents |
|---|---|---|---|---|
| SIMCOE, LLC (formerly BP America Production Company) - Treating Site #1 Central Delivery Point | Southern Ute Indian Reservation, La Plata County, Colorado | PSD | June 9, 1999 | PSD Permit and Statement of Basis for Treating Site #1 Central Delivery Point |
| SIMCOE, LLC (formerly BP America Production Company) - Treating Site #2 Central Delivery Point | Southern Ute Indian Reservation, La Plata County, Colorado | PSD | June 9, 1999 | PSD Permit and Statement of Basis for Treating Site #2 Central Delivery Point |
| SIMCOE, LLC (formerly BP America Production Company) - Treating Site #4 Central Delivery Point | Southern Ute Indian Reservation, La Plata County, Colorado | PSD | June 9, 1999 | PSD Permit and Statement of Basis for Treating Site #4 Central Delivery Point |
| SIMCOE, LLC (formerly BP America Production Company) - Treating Site #6 Central Delivery Point | Southern Ute Indian Reservation, La Plata County, Colorado | PSD | June 9, 1999 | PSD Permit and Statement of Basis for Treating Site #6 Central Delivery Point |
| Cheyenne Light Fuel and Power/Black Hills Power, Inc. - Cheyenne Prairie Generating Station | Laramie County, Wyoming | GHG PSD | September 27, 2012 | GHG PSD Permit & Related Documents for Cheyenne Prairie Generating Station |
| Deseret Generation and Transmission Cooperative - Boiler #1 | Uintah and Ouray Indian Reservation, Uintah County, Utah | PSD | February 2, 2001 | PSD Permit & Fact Sheet for Deseret Boiler #1 |
| Deseret Generation and Transmission Cooperative - WCFU | Uintah and Ouray Indian Reservation, Uintah County, Utah | PSD | August 30, 2007 (appealed and remanded) | Please contact Claudia Smith (smith.claudia@epa.gov) 303-312-6520 |
| Sinclair Wyoming Refining Company - Sinclair Refinery | Sinclair, Wyoming | GHG PSD | March 21, 2013 | GHG PSD Permit & Related Documents for Sinclair Refinery |
| Sioux Manufacturing Company - Kevlar Coating Facility | Spirit Lake Indian Reservation, Benson County, North Dakota | PSD | May 3, 2006 | PSD Permit & Statement of Basis for Sioux Manufacturing Kevlar Coating Facility (pdf) |
| Solvay Soda Ash Joint Venture - Green River Soda Ash Plant | Green River, Wyoming | GHG PSD | January 27, 2014 | GHG PSD Permit & Related Documents for Green River Soda Ash Plant |
| Williams Field Services - Ignacio Gas Plant | Southern Ute Indian Reservation, La Plata County, Colorado | PSD | December 22, 2010 | PSD Permit & Related Documents for Ignacio Gas Plant |
| Williams Field Services - PLA-9 Central Delivery Point | La Plata County, Colorado | PSD | January 4, 2007 | PSD Permit & Statement of Basis for PLA-9 Central Delivery Point (pdf) |
NA NSR Permits
| Operator Name - Facility Name | Location | Type | Date Issued | Related Documents |
|---|---|---|---|---|
| None at this time |
Minor NSR Permits
| Operator Name - Facility Name | Location | Type | Permit Number | Date Issued | Related Documents |
|---|---|---|---|---|---|
| American Gilsonite Company - Cottonwood Mine Site | Uintah and Ouray Indian Reservation, Uintah County, Utah | True Minor (Administrative Revision) | TMNSR-UO-008135-2022.002 | April 13, 2022 | Docket #EPA-R08-OAR-2020-0149 Previous True Minor (Modification) Permit (November 3, 2020) - Permit & Administrative Record for American Gilsonite Company - Cottonwood Mine Site |
| Caerus Uintah, LLC (formerly Anadarko Uintah Midstream, LLC) - Antelope Flats & Sand Wash Compressor Stations with South Central Tank Battery | Uintah and Ouray Indian Reservation, Uintah County, Utah | Synthetic Minor (2nd Administrative Revision) | SMNSR-UO-000027-2023.003 | February 7, 2023 | Docket #EPA-R08-OAR-2019-0227 (includes 1st Administrative Revision issued January 14, 2020) Previous Permit (September 5, 2017) Permit & Administrative Record for Caerus Uintah, LLC (formerly Anadarko Uintah Midstream, LLC) - Antelope Flats & Sand Wash Compressor Stations with South Central Tank Battery |
| Caerus Uintah, LLC (formerly Anadarko Uintah Midstream, LLC) - Archie Bench Compressor Station | Uintah and Ouray Indian Reservation, Uintah County, Utah | Synthetic Minor (Administrative Revision) | SMNSR-UO-000817-2021.002B | August 31, 2022 | Docket #EPA-R08-OAR-2019-0029 (includes previous permit (November 14, 2019)) Previous Permit (June 7, 2018) Docket #EPA-R08-OAR-2018-0310 (Effective December 7, 2018 after EAB Denial of Petition for Review) |
| Caerus Uintah, LLC (formerly Anadarko Uintah Midstream, LLC) - Blue Feather Compressor Station | Uintah and Ouray Indian Reservation, Uintah County, Utah | Synthetic Minor (Administrative Revision) | SMNSR-UO-000819-2021.001B | August 31, 2022 | Docket #EPA-R08-OAR-2018-0312 (includes previous permit (September 16, 2019)) |
| Caerus Uintah, LLC (formerly Anadarko Uintah Midstream, LLC) - Cottonwood Wash Compressor Station | Uintah and Ouray Indian Reservation, Uintah County, Utah | Synthetic Minor (Administrative Revision) | SMNSR-UO-000007-2020.002 | December 20, 2021 | Docket #EPA-R08-OAR-2021-0442 Previous Permit (April 3, 2017) Permit & Administrative Record for Caerus Uintah, LLC (formerly Anadarko Uintah Midstream, LLC) - Cottonwood Wash Compressor Station |
| Caerus Uintah, LLC (formerly Chipeta Processing, LLC) - Natural Buttes Compressor Station | Uintah and Ouray Indian Reservation, Uintah County, Utah | Synthetic Minor (Administrative Revision) | SMNSR-UO-000003-2021.001B | September 21, 2022 | Docket #EPA-R08-OAR-2019-0407 (includes previous permit (September 29, 2020)) |
| Caerus Uintah, LLC (formerly Anadarko Uintah Midstream, LLC) - Diablo Compressor Station | Uintah and Ouray Indian Reservation, Uintah County, Utah | Synthetic Minor (Administrative Revision) | SMNSR-UO-000823-2021.002B | August 31, 2022 | Docket #EPA-R08-OAR-2019-0342 (includes previous permit (October 25, 2019)) Previous Permit (May 2, 2019) Docket #EPA-R08-OAR-2018-0323 |
| Caerus Uintah, LLC (formerly Anadarko Uintah Midstream, LLC) - L-16 Compressor Station | Uintah and Ouray Indian Reservation, Uintah County, Utah | Synthetic Minor (Administrative Revision) | SMNSR-UO-000826-2021.001B | August 31, 2022 | Docket #EPA-R08-OAR-2018-0327 (includes previous permit (July 31, 2019)) |
| Caerus Uintah, LLC (formerly Anadarko Uintah Midstream, LLC) - Morgan State Compressor Station | Uintah and Ouray Indian Reservation, Uintah County, Utah | Synthetic Minor (Administrative Revision) | SMNSR-UO-000973-2021.001B | August 31, 2022 | Docket ID #EPA-R08-OAR-2018-0326 (includes previous permit (August 7, 2019)) |
| Caerus Uintah, LLC (formerly Anadarko Uintah Midstream, LLC) - North Compressor Station | Uintah and Ouray Indian Reservation, Uintah County, Utah | Synthetic Minor (Administrative Revision) | SMNSR-UO-000071-2021.001B | September 21, 2022 | Docket #EPA-R08-OAR-2018-0328 (includes previous permit (June 7, 2018 - Effective December 7, 2018 after EAB Denial of Petition for Review)) |
| Caerus Uintah, LLC (formerly Anadarko Uintah Midstream, LLC) - Ouray Compressor Station | Uintah and Ouray Indian Reservation, Uintah County, Utah | Synthetic Minor (Administrative Revision) | SMNSR-UO-000008-2021.002B | September 21, 2022 | Docket #EPA-R08-OAR-2020-0019 (Includes previous permit (October 8, 2020)) Previous Permit (September 10, 2019) Docket #EPA-R08-OAR-2018-0330 |
| Caerus Uintah, LLC (formerly Anadarko Uintah Midstream, LLC) - Sage Grouse Compressor Station | Uintah and Ouray Indian Reservation, Uintah County, Utah | Synthetic Minor (Administrative Revision) | SMNSR-UO-001875-2021.002B | September 21, 2022 | Docket # EPA-R08-OAR-2019-0030 (Includes previous permit (November 20, 2019)) Previous Permit (June 7, 2018) Docket #EPA-R08-OAR-2018-0331 (Effective December 7, 2018 after EAB Denial of Petition for Review) |
| Caerus Uintah, LLC (formerly Anadarko Uintah Midstream, LLC) - South Compressor Station | Uintah and Ouray Indian Reservation, Uintah County, Utah | Synthetic Minor (Administrative Revision) | SMNSR-UO-001876-2021.001B | September 21, 2022 | Docket #EPA-R08-OAR-2018-0332 (Includes previous permit (September 10, 2019)) |
| Caerus Uintah, LLC (formerly Anadarko Uintah Midstream, LLC) - South East Compressor Station | Uintah and Ouray Indian Reservation, Uintah County, Utah | Synthetic Minor (Administrative Revision) | SMNSR-UO-001877-2021.002B | September 21, 2022 | Docket #EPA-R08-OAR-2018-0333 (Includes previous permit (August 29, 2019)) |
| Caerus Uintah, LLC (formerly Anadarko Uintah Midstream, LLC) - Willow Creek Compressor Station | Uintah and Ouray Indian Reservation, Uintah County, Utah | Synthetic Minor (Administrative Revision) | SMNSR-UO-000008-2021.001B | September 21, 2022 | Docket #EPA-R08-OAR-2018-0334 (Includes previous permit (September 16, 2019)) |
| Caerus Uintah, LLC (formerly Anadarko Uintah Midstream, LLC) - White River Compressor Station | Uintah and Ouray Indian Reservation, Uintah County, Utah | Synthetic Minor (Administrative Revision) | SMNSR-UO-000128-2021.002B | September 22, 2022 | Docket #EPA-R08-OAR-2022-0800 Previous Permit (November 14, 2017) Permit & Administrative Record for Caerus Uintah, LLC (formerly Anadarko Uintah Midstream, LLC) - White River Compressor Station |
| Arrow Pipeline, LLC - Stations #1-6 | Fort Berthold Indian Reservation, McKenzie and Dunn Counties, North Dakota | Synthetic Minor (Revision) | SMNSR-TAT-000367-2023.006 | March 15, 2024 | Permit & Administrative Record for Arrow Pipeline, LLC - Stations #1-6 Previous Permits (July 20, 2021, Docket #EPA-R08-OAR-2019-0003; August 27, 2020, Docket #EPA-R08-OAR-2019-0003; May 25, 2017, Permit & Administrative Record for Arrow Pipeline, LLC - Stations #1-6) |
| Arrow Pipeline, LLC - Station #7 | Fort Berthold Indian Reservation, McKenzie and Dunn Counties, North Dakota | Synthetic Minor (Administrative Revision) | SMNSR-TAT-000661-2017.003 | January 10, 2018 | Permit & Administrative Record for Arrow Pipeline, LLC - Station #7 |
| Berry Petroleum Company (Formerly LINN Operating, Inc.) - Section 22 Compressor Station | Uintah and Ouray Indian Reservation, Uintah County, Utah | Synthetic Minor (Administrative Revision) | SMNSR-UO-000876-2018.003 | January 25, 2018 | Permit & Administrative Record for Berry Petroleum Company (Formerly LINN Operating, Inc.) - Section 22 Compressor Station |
| Berry Petroleum Company (Formerly LINN Operating, Inc.) - Section 23 Compressor Station | Uintah and Ouray Indian Reservation, Uintah County, Utah | Synthetic Minor (Administrative Revision) | SMNSR-UO-000877-2018.003 | January 25, 2018 | Permit & Administrative Record for Berry Petroleum Company (Formerly LINN Operating, Inc.) - Section 23 Compressor Station |
| BioUrja New Town Terminal, LLC - New Town Transfer Facility | Fort Berthold Indian Reservation, Mountrail County, North Dakota | Synthetic Minor (Administrative Revision) | SMNSR-TAT-000285-2017.003 | July 7, 2017 | Permit & Administrative Record for BioUrja New Town Terminal, LLC - New Town Transfer Facility |
| SIMCOE, LLC (formerly BP America Production Company) - Miera Central Delivery Point | Southern Ute Indian Reservation, La Plata County, Colorado | Synthetic Minor (Administrative Revision) | SMNSR-SU-000039-2021.002 | January 11, 2022 | Docket #EPA-R08-OAR-2021-0375 Previous Permit - June 5, 2014, Permit for SIMCOE, LLC (formerly BP America Production Company) - Miera Central Delivery Point (pdf) |
| SIMCOE, LLC (formerly BP America Production Company) - Salvador I/II Central Delivery Point | Southern Ute Indian Reservation, La Plata County, Colorado | Synthetic Minor | SMNSR-SU-000009-2014.002 | December 4, 2014 | Permit for SIMCOE, LLC (formerly BP America Production Company) - Salvador I/II Central Delivery Point (pdf) |
| SIMCOE, LLC (formerly BP America Production Company) - Salvador I/II Central Delivery Point | Southern Ute Indian Reservation, La Plata County, Colorado | Synthetic Minor | SMNSR-SU-000009-2015.003 | May 19, 2016 | Permit & Administrative Record for SIMCOE, LLC (formerly BP America Production Company) - Salvador I/II Central Delivery Point |
| SIMCOE, LLC (formerly BP America Production Company) - Treating Site #8 Central Delivery Point | Southern Ute Indian Reservation, La Plata County, Colorado | Synthetic Minor | SMNSR-SU-000026-2012.001 | May 27, 2014 | Permit for SIMCOE, LLC (formerly BP America Production Company) - Treating Site #8 Central Delivery Point (pdf) |
| SIMCOE, LLC (formerly BP America Production Company) - Wolf Point Central Delivery Point | Southern Ute Indian Reservation, La Plata County, Colorado | Synthetic Minor (Administrative Revision) | SMNSR-SU-000034-2021.002 | January 19, 2022 | Docket #EPA-R08-OAR-2021-0376 Previous Permit - June 5, 2014, Permit for SIMCOE, LLC (formerly BP America Production Company) - Wolf Point Central Delivery Point (pdf) |
| Arkoma Operations, LLC (Formerly Catamount Energy Partners) - Ignacio Gas Treating Plant | Southern Ute Indian Reservation, La Plata County, Colorado | Synthetic Minor (Revision) | SMNSR-SU-000052-2021.004 | March 17, 2022 | Docket #EPA-R08-OAR-2021-0515 Previous Permit (May 22, 2019) Docket #EPA-R08-OAR-2019-013 Previous Permit (March 4, 2019) Docket #EPA-R08-2018-0287 |
| Chemtrade Logistics - Chemtrade Refinery Services, Inc. Riverton, Wyoming Facility | Wind River Indian Reservation, Fremont County, Wyoming | Synthetic Minor | SMNSR-WR-000003-2013.001 | August 27, 2015 | Docket #EPA-R08-OAR-2023-0490 |
| CHS, Inc. - Farmers Elevator Macon Facility | Fort Peck Indian Reservation, Roosevelt County, Montana | True Minor | TMNSR-FP-000010-2015.001 | November 28, 2017 | Permit & Administrative Record for SIMCOE, LLC (formerly BP America Production Company) - Wolf Point Central Delivery Point |
| Crusoe Energy Systems, Inc. - Charging Eagle 21-25 | Fort Berthold Indian Reservation, Dunn County, North Dakota | True Minor | TMNSR-TAT-008173-2022.001 | August 29, 2022 | Permit & Administrative Record for Crusoe Energy Systems, Inc. - Charging Eagle 21-25 |
| Crusoe Energy Systems, Inc. - Crosby Chase CTB | Fort Berthold Indian Reservation, McKenzie County, North Dakota | Synthetic Minor (Revision) | SMNSR-TAT-008149-2023.002 | February 9, 2024 | Permit & Administrative Record for Crusoe Energy Systems, Inc. - Crosby Chase CTB Previous Permit - February 28, 2022, Permit & Administrative Record for Crusoe Energy Systems, Inc. - Crosby Chase CTB |
| CWT Operating LLC - EPU Deep 10-1/2 Production Facility | Fort Peck Indian Reservation, Roosevelt County, Montana | Synthetic Minor | SMNSR-FP-000013-2022.002 | July 20, 2023 | Docket #EPA-R08-OAR-2022-0846 |
| Hilcorp Energy Company (formerly ConocoPhillips Company) - Argenta Compressor Station | Southern Ute Indian Reservation, La Plata County, Colorado | Synthetic Minor (Administrative Revision) | SMNSR-SU-000030-2019.002 | October 8, 2020 | Docket #EPA-R08-OAR-2019-0604 Previous Permit - April 11, 2014, Permit for Hilcorp Energy Company (formerly ConocoPhillips Company) - Argenta Compressor Station (pdf) |
| Hilcorp Energy Company (formerly ConocoPhillips Company) - Sunnyside Compressor Station | Southern Ute Indian Reservation, La Plata County, Colorado | Synthetic Minor (Administrative Revision) | SMNSR-SU-000032-2019.002 | October 8, 2020 | Docket #EPA-R08-OAR-2020-0525 Previous Permit - June 5, 2014, Permit for Hilcorp Energy Company (formerly ConocoPhillips Company) - Sunnyside Compressor Station (pdf) |
| Hilcorp Energy Company (formerly ConocoPhillips Company) - Ute Compressor Station | Southern Ute Indian Reservation, La Plata County, Colorado | Synthetic Minor (Administrative Revision) | SMNSR-SU-000054-2019.003 | October 8, 2020 | Docket #EPA-R08-OAR-2019-0606 Previous Permit - March 21, 2014, Permit for Hilcorp Energy Company (formerly ConocoPhillips Company) - Ute Compressor Station |
| Crossfire Aggregate Services, LLC - Crossfire Bonds Gravel Pit | Southern Ute Indian Reservation, La Plata County, Colorado | True Minor | TMNSR-SU-000412-2015.001 | November 3, 2015 | Permit for Crossfire Aggregate Services, LLC - Crossfire Bonds Gravel Pit (pdf) |
| Deseret Generation and Transmission Cooperative - Bonanza Power Plant | Uintah and Ouray Indian Reservation, Uintah County, Utah | Synthetic Minor Modification at Existing Major Source and Minor NSR Revision | SMNSR-UO-000004-2023.006 and MNSR-UO-000004-2023.005 | June 13, 2025 | Docket #EPA-R08-OAR-2023-0233 Previous Permit - Permit & Administrative Record (February 11, 2016) Deseret Generation and Transmission Cooperative - Bonanza Power Plant |
| MountainWest Pipeline, LLC (formerly Dominion Energy Questar Pipeline, LLC) - Fidlar Compressor Station | Uintah and Ouray Indian Reservation, Uintah County, Utah | Synthetic Minor (Administrative Revision) | SMNSR-UO-000002-2022.004 | December 28, 2022 | Docket #
|
| KGH Operating Company - Bonanza State 20-15H Oil and Natural Gas Production Facility | Uintah and Ouray Indian Reservation, Uinta County, Utah | Synthetic Minor (Revision) | SMNSR-UO-007088-2020.003 | September 28, 2020 | Docket #EPA-R08-OAR-2020-0192 Previous Permit (September 27, 2019) Docket #EPA-R08-OAR-2018-0342 |
| KGH Operating Company - State 28-13 Oil and Natural Gas Production Facility | Uintah and Ouray Indian Reservation, Uintah County, Utah | Synthetic Minor | SMNSR-UO-007089-2018.002 | September 25, 2018 | Docket #EPA-R08-OAR-2018-0337 |
| MI3 Petroleum Engineering (Operator) / Wind River Energy Commission (Owner) (formerly Merit Energy Company) - Steamboat Butte C1/C3 Tank Battery | Wind River Indian Reservation, Fremont County, Wyoming | Synthetic Minor (Administrative Revision) | SMNSR-WR-000004-2020.002 | January 27, 2020 | Docket #EPA-R08-OAR-2018-0339 |
| MI3 Petroleum Engineering (Operator) / Wind River Energy Commission (Owner) (formerly Merit Energy Company) - Steamboat Butte E5 Tank Battery | Wind River Indian Reservation, Fremont County, Wyoming | Synthetic Minor (Revision) | SMNSR-WR-000005-2020.003 | October 2, 2020 | Docket #EPA-R08-OAR-2020-0307 Previous Permit (December 21, 2018) Docket #EPA-R08-OAR-2018-0340 |
| Monarch Natural Gas, LLC - Riverbend Compressor Station | Uintah & Ouray Indian Reservation, Uintah County, Utah | Synthetic Minor | SMNSR-UO-000021-2020.001 | September 15, 2020 | Docket #EPA-R08-OAR-2020-0089 |
| Montana Dakota Utilities Company - Poplar Oil Field Substation (with Emergency Backup Generator) | Fort Peck Indian Reservation, Roosevelt County, Montana | True Minor | TMNSR-FP-000011-2020.001 | October 6, 2020 | Permit & Administrative Record for Montana Dakota Utilities Company - Poplar Oil Field Substation (with Emergency Backup Generator) |
| Northern Border Pipeline Company - Compressor Station #2 | Fort Peck Indian Reservation, Roosevelt County, Montana | Synthetic Minor | SMNSR-FP-000001-2015.001 | January 29, 2016 | Permit for Northern Border Pipeline Company - Compressor Station #2 |
| NorthWestern Energy Corporation - Meriwether Compressor Station | Blackfeet Indian Reservation, Glacier County, Montana | Synthetic Minor | SMNSR-B-000005-2022.003 | December 5, 2022 | Permit & Administrative Record for NorthWestern Energy Corporation - Meriwether Compressor Station |
| Red Cedar Gathering Company - Antler Power Station | Southern Ute Indian Reservation, La Plata County, Colorado | Synthetic Minor | SMRSR-SU-000476-2021.001 | June 7, 2023 | Permit & Administrative Record for Red Cedar Gathering Company - Antler Power Station |
| Red Cedar Gathering Company - CO2 Capture Facility | Southern Ute Indian Reservation, La Plata County, Colorado | True Minor | TMNSR-SU-000496-2023.001 | November 26, 2024 | Permit & Administrative Record for Red Cedar Gathering Company - CO2 Capture Facility |
| Red Cedar Gathering Company - Arkansas Loop and Simpson Treating Plants | Southern Ute Indian Reservation, La Plata County, Colorado | Synthetic Minor (Administrative Revision) | SMNSR-SU-000010-2020.004B | September 12, 2022 | Docket #EPA-R08-OAR-2021-0920 Previous Permit - June 5, 2014, Permit for Red Cedar Gathering Company - Arkansas Loop and Simpson Treating Plants (pdf) |
| Red Cedar Gathering Company - Arkansas Loop and Simpson Treating Plants | Southern Ute Indian Reservation, La Plata County, Colorado | Minor Modification of Existing Major Source | MNSR-SU-000010-2014.002 | August 28, 2014 | August 28. 2014, Permit for Red Cedar Gathering Company - Arkansas Loop and Simpson Treating Plants (pdf) |
| Red Cedar Gathering Company - Arkansas Loop and Simpson Treating Plants | Southern Ute Indian Reservation, La Plata County, Colorado | Synthetic Minor (Administrative Revision) | SMNSR-SU-000010-2020.004b | September 12, 2022 | Docket #EPA-R08-OAR-2019-0133 Previous Permit (November 16, 2018) Docket #EPA-R08-OAR-2018-0341 |
| Red Cedar Gathering Company - Sambrito Compressor Station | Southern Ute Indian Reservation, La Plata County, Colorado | Synthetic Minor (Administrative Revision) | SMNSR-SU-000049-2023.002B | September 22, 2023 | Docket #EPA-R08-OAR-2022-0545 Previous Permit - June 5, 2014, Permit for Red Cedar Gathering Company - Sambrito Compressor Station (pdf) |
| Red Cedar Gathering Company - South Ignacio Central Delivery Point | Southern Ute Indian Reservation, La Plata County, Colorado | Synthetic Minor (Revision) | SMNSR-SU-000031-2019.004 | December 2, 2020 | Previous Permit - February 14, 2017, Permit & Administrative Record for Red Cedar Gathering Company - South Ignacio Central Delivery Point |
| Table Rock Minerals, LLC - Gilsonite Mine | Uintah and Ouray Indian Reservation, Uintah County, Utah | True Minor (Modification) | TMNSR-UO-007057-2021.002 | September 23, 2021 | Docket #EPA-R08-OAR-2021-0239 Previous Permit (September 27, 2017) February 14, 2017, Permit & Administrative Record for Table Rock Minerals, LLC - Gilsonite Mine |
| Three Affiliated Tribes of North Dakota (aka MHA Nation) - Native Green Grow (NG2) | Fort Berthold Indian Reservation, Mountrail County, North Dakota | True Minor | TMNSR-TAT-008157-2021.001 | May 20, 2025 | True Minor NSR Permit and Administrative Record for MHA Nation - Native Green Grow (NG2) |
| MPLX (Owned by Andeavor Field Services, LLC) - Ponderosa Compressor Station | Uintah and Ouray Indian Reservation, Uintah County, Utah | Synthetic Minor (Administrative Revision) | SMNSR-UO-002078-2021.004 | April 20, 2021 | Docket #EPA-R08-OAR-2021-0309 Previous Permit - April 6, 2017, Permit & Administrative Record for MPLX (Owned by Andeavor Field Services, LLC) - Ponderosa Compressor Station |
| Thunder Butte Petroleum Services, Inc. - Crude Storage and Loading Facility | Fort Berthold Indian Reservation, Ward County, North Dakota | Synthetic Minor (Revision) | SMNSR-TAT-000781-2023.003 | March 14, 2025 | Docket #EPA-R08-OAR-2024-0040 Previous Permit (June 21, 2022 Administrative Revision) Docket #EPA-R08-OAR-2021-0167 |
Minor NSR General Permits
| Sources in Region 8 Indian Country Approved for Coverage under General Permits |
|---|
| Hot Mix Asphalt Plants |
| Stone Quarrying, Crushing, and Screening Facilities |
| Concrete Batch Plants |
| Boilers and Emergency Engines - None at this time |
| Stationary Spark Ignition Engines - None at this time |
| Stationary Compression Ignition Engines |
| Graphic Arts and Printing Operations - None at this time |
| Sawmill Facilities - None at this time |
Minor NSR Permits by Rule
| Sources in Region 8 Indian Country Complying with Permits by Rule |
|---|
| Gasoline Dispensing Facilities – None at this time |
| Petroleum Dry Cleaning Facilities – None at this time |
| Auto Body Repair and Miscellaneous Surface Coating Operations – None at this time |
Minor NSR Federal Implementation Plans
| Sources in Region 8 Indian Country Registered under Federal Implementation Plans |
|---|
| Oil and Natural Gas True Minor Sources |
Part 71 Title V Operating Permits
| Operator Name - Facility Name | Location | Type | Date Permit Expires | Related Documents |
|---|---|---|---|---|
| MountainWest Pipeline, LLC (formerly Dominion Energy Questar Pipeline, LLC) - Fidlar Compressor Station | Uintah & Ouray Indian Reservation, Uintah County, Utah | Third Renewal | March 8, 2029 | Docket #EPA-R08-OAR-2022-0726 |
| MPLX (Owned by Andeavor Field Services, LLC) - Chapita Compressor Station | Uintah & Ouray Indian Reservation, Uintah County, Utah | First Renewal, Administrative Amendments, and Minor Modification | April 18, 2024 | Docket #EPA-R08-OAR-2018-0346 |
| MPLX (Owned by Andeavor Field Services, LLC) - Coyote Wash Compressor Station | Uintah & Ouray Indian Reservation, Uintah County, Utah | First Renewal & Minor Modification | June 12, 2025 | Docket #EPA-R08-OAR-2019-0196 |
| MPLX (Owned by Andeavor Field Services, LLC) - Walker Hollow Compressor Station | Uintah & Ouray Indian Reservation, Uintah County, Utah | Initial Permit | July 12, 2023 | Docket #EPA-R08-OAR-2018-0347 |
| Arrow Pipeline, LLC - Stations #1-6 | Fort Berthold Indian Reservation, Dunn County, North Dakota | Initial Permit & Minor Modification | May 10, 2026 | Docket #EPA-R08-OAR-2018-0351 |
| Caerus Uintah, LLC (formerly Anadarko Uintah Midstream, LLC) - Cottonwood Wash Compressor Station | Uintah & Ouray Indian Reservation, Uintah County, Utah | Initial Permit & Administrative Amendment | March 4, 2026 | Docket #EPA-R08-OAR-2020-0134 |
| Chipeta Processing, LLC - Chipeta Gas Plant | Uintah & Ouray Indian Reservation, Uintah County, Utah | First Renewal | June 1, 2028 | Docket #EPA-R08-OAR-2018-0356 |
| Cobra Oil and Gas Corporation - Flat Rock Compressor Station | Uintah & Ouray Indian Reservation, Uintah County, Utah | Initial Permit | January 17, 2024 | Docket #EPA-R08-OAR-2018-0358 |
| Cobra Oil and Gas Corporation - Wolf Flat Compressor Station | Uintah & Ouray Indian Reservation, Uintah County, Utah | Initial Permit & Administrative Amendment | November 28, 2023 | Docket #EPA-R08-OAR-2018-0658 |
| CR Group, LLC - Tekoi Landfill | Skull Valley Indian Reservation, Tooele County, Utah | Second Renewal | May 13, 2027 | Docket #EPA-R08-OAR-2021-0418 |
| Deseret Generation and Transmission Cooperative - Bonanza Power Plant | Uintah & Ouray Indian Reservation, Uintah County, Utah | First Renewal | December 17, 2029 | Docket #EPA-R08-OAR-2019-0350 Initial Permit & January 7, 2020, Administrative Amendment Record for Deseret Generation and Transmission Cooperative - Bonanza Power Plant |
| EOG Resources, Incorporated - Clarks Creek Central Facility | Fort Berthold Indian Reservation, McKenzie County, North Dakota | Initial Permit | January 22, 2025 | Docket #EPA-R08-OAR-2019-0201 |
| MI3 Petroleum Engineering (Operator) / Wind River Energy Commission (Owner) (formerly Merit Energy Company) - Steamboat Butte C1/C3 Tank Battery | Wind River Indian Reservation, Fremont County, Wyoming | Initial Permit | March 26, 2025 | Docket #EPA-R08-OAR-2018-0363 |
| MI3 Petroleum Engineering (Operator) / Wind River Energy Commission (Owner) (formerly Merit Energy Company) - Steamboat Butte E5 Tank Battery | Wind River Indian Reservation, Fremont County, Wyoming | Initial Permit | May 18, 2026 | Docket #EPA-R08-OAR-2018-0364 |
| MPLX (Owned by Andeavor Field Services, LLC) - Red Wash 24B Gas Plant | Uintah & Ouray Indian Reservation, Uintah County, Utah | First Renewal | May 13, 2025 | Docket #EPA-R08-OAR-2019-0198 |
| MPLX (Owned by Andeavor Field Services, LLC) - Wonsits Valley Compressor Station | Uintah & Ouray Indian Reservation, Uintah County, Utah | First Renewal & Modifications/Amendments | September 16, 2025 | Docket #EPA-R08-OAR-2018-0349 |
| Northern Border Pipeline Company - Compressor Station #2 | Fort Peck Indian Reservation, Roosevelt County, Montana | Second Renewal | July 24, 2025 | Docket #EPA-R08-OAR-2019-0554 |
| Sioux Manufacturing Corporation - Kevlar Coating Facility | Spirit Lake Indian Reservation, Benson County, North Dakota | First Renewal | September 27, 2026 | Docket #EPA-R08-OAR-2020-0350 |
| Targa Badlands, LLC - Blue Buttes Compressor Station and Pump Station | Fort Berthold Indian Reservation, McKenzie County, North Dakota | Initial Permit | January 22, 2025 | Docket #EPA-R08-OAR-2018-0816 |
| Targa Badlands, LLC - Clarks Creek Compressor Station | Fort Berthold Indian Reservation, McKenzie County, North Dakota | Initial Permit | November 4, 2024 | Docket #EPA-R08-OAR-2019-0132 |
| Targa Badlands, LLC - Johnson Compressor Station | Fort Berthold Indian Reservation, Dunn County, North Dakota | Minor Modification | December 17, 2023 | Minor Modification (February 10, 2021) Docket ID # EPA-R08-OAR-2019-0597
|
| Targa Badlands, LLC - Junction Compressor Station | Fort Berthold Indian Reservation, McKenzie County, North Dakota | Initial Permit | December 30, 2024 | Docket #EPA-R08-OAR-2018-0380 |
| Targa Badlands, LLC - TAT Blue Buttes Compressor Station | Fort Berthold Indian Reservation, McKenzie County, North Dakota | Initial Permit & Administrative Amendment | May 21, 2025 | Docket #EPA-R08-OAR-2019-0261 |
| Targa Badlands, LLC - Robert's Trust Compressor Station | Fort Berthold Indian Reservation, Dunn County, North Dakota | Initial Permit & Administrative Amendment | October 1, 2026 | Docket #EPA-R08-OAR-2019-0645 |
| WBI Energy Transmission, Inc. - Hardin Compressor Station | Crow Indian Reservation, Big Horn County, Montana | Third Renewal | July 22, 2028 | Docket #EPA-R08-OAR-2022-0713 |
| Wexpro Company - Island Compressor Station | Uintah & Ouray Indian Reservation, Uintah County, Utah | First Renewal | May 23, 2025 | Docket #EPA-R08-OAR-2019-0197 |
| Utah Gas Corporation, LLC - Little Canyon Unit Compressor Station | Uintah & Ouray Indian Reservation, Uintah County, Utah | First Renewal | April 3, 2028 | Docket #EPA-R08-OAR-2022-0199 |
| Utah Gas Corporation, LLC - River Bend Dehydration Site | Uintah & Ouray Indian Reservation, Uintah County, Utah | First Renewal Permit & Administrative Amendment | June 1, 2028 | Docket #EPA-R08-OAR-2022-0276 |
| Utah Gas Corporation, LLC - Tap 5 Compressor Station | Uintah & Ouray Indian Reservation, Uintah County, Utah | First Renewal | April 3, 2028 | Docket #EPA-R08-OAR-2021-0770 |
Part 61 NESHAP Construction Approvals
| Facility Name - Operator Name | Location | Applicable Part 61 Subpart | Date Approved | Related Documents |
|---|---|---|---|---|
| Lost Creek In Situ Recovery Uranium Project - Ur-Energy USA, Inc. | Sweetwater County, Wyoming | Subpart W | December 20, 2011 | Lost Creek In Situ Recovery Uranium Project Subpart W Construction Approval (pdf) |
| Ross Basin Uranium In Situ Recovery Project - Strata Energy, Inc. | Crook County, Wyoming | Subpart W | June 15, 2020 | Ross Basin Uranium In Situ Recovery Project Subpart W Construction Approval.docx (docx) |
| Shirley Basin Uranium In Situ Recovery Project - Pathfinder Mines Corporation | Carbon County, Wyoming | Subpart W | March 6, 2020 | Shirley Basin Uranium In Situ Recovery Project Subpart W Construction Approval (docx) |