EPA Air · stack tests by state and year
Air-emissions stack tests in North Dakota, 2025
- 143Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Every stack test below was recorded against a source in North Dakota during 2025; one facility can appear more than once, because this is a record of what happened rather than a list of places.
Counties in North Dakota, 2025
- McKenzie County 79
- Dunn County 23
- Williams County 14
- Morton County 4
- Pembina County 4
- Cass County 3
- Divide County 3
North Dakota, other years
Air-emissions stack tests recorded in North Dakota, 2025
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2025-12-30 | DAKOTA GASIFICATION COMPANY (DGC) - GREAT PLAINS SYNFUELS PLANT - AQ | BEULAH, Mercer, ND | Pass | State |
| 2025-12-16 | BUFFALO COMPRESSOR STATION | MANDAREE SEGMENT, Dunn, ND | Pass | U.S. EPA |
| 2025-12-11 | TARGA BADLANDS JUNCTION COMPRESSOR STATION | MCKENZIE COUNTY, McKenzie, ND | Pass | U.S. EPA |
| 2025-12-11 | TARGA- CLARK'S CREEK COMPRESSOR STATION | KEENE, McKenzie, ND | Pass | U.S. EPA |
| 2025-12-11 | BLUE BUTTES COMPRESSOR STATION AND PUMP STATION | MCKENZIE COUNTY, McKenzie, ND | Pass | U.S. EPA |
| 2025-12-11 | TAT-BLUE BUTTES COMPRESSOR STATION | MCKENZIE COUNTY, McKenzie, ND | Pass | U.S. EPA |
| 2025-12-03 | NET-ZERO RICHARDTON, LLC - RICHARDTON ETHANOL PLANT - AQ | RICHARDTON, Stark, ND | N/A | State |
| 2025-11-20 | HILAND PARTNERS HOLDINGS LLC - NORSE GAS PLANT | MCGREGOR, Divide, ND | Pass | State |
| 2025-11-18 | TARGA BADLANDS JUNCTION COMPRESSOR STATION | MCKENZIE COUNTY, McKenzie, ND | Pass | U.S. EPA |
| 2025-11-18 | TARGA BADLANDS JUNCTION COMPRESSOR STATION | MCKENZIE COUNTY, McKenzie, ND | Pass | U.S. EPA |
| 2025-11-13 | HILAND PARTNERS HOLDINGS LLC - RIVERS EDGE COMPRESSOR STATION | WILLISTON, McKenzie, ND | Pass | State |
| 2025-11-11 | HILAND PARTNERS HOLDINGS LLC - ALEX COMPRESSOR STATION | WATFORD CITY, McKenzie, ND | Pass | State |
| 2025-11-11 | BASIN ELECTRIC POWER COOPERATIVE - PIONEER GENERATION STATION - AQ | WILLISTON, Williams, ND | Pass | State |
| 2025-11-06 | HILAND PARTNERS HOLDINGS LLC - WATFORD CITY GAS PLANT - AQ | ALEXANDER, McKenzie, ND | Pass | State |
| 2025-11-04 | TARGA BADLANDS, LLC - LITTLE MISSOURI GAS PLANT (LMGP) AND SMOKEY COMPRESSOR STA | WATFORD CITY, McKenzie, ND | N/A | State |
| 2025-11-04 | TARGA BADLANDS, LLC - LITTLE MISSOURI GAS PLANT (LMGP) AND SMOKEY COMPRESSOR STA | WATFORD CITY, McKenzie, ND | N/A | State |
| 2025-10-28 | TARGA- CLARK'S CREEK COMPRESSOR STATION | KEENE, McKenzie, ND | Pass | U.S. EPA |
| 2025-10-28 | TARGA- CLARK'S CREEK COMPRESSOR STATION | KEENE, McKenzie, ND | Pass | U.S. EPA |
| 2025-10-28 | TARGA- CLARK'S CREEK COMPRESSOR STATION | KEENE, McKenzie, ND | Pass | U.S. EPA |
| 2025-10-28 | TAT-BLUE BUTTES COMPRESSOR STATION | MCKENZIE COUNTY, McKenzie, ND | Pass | U.S. EPA |
| 2025-10-28 | TAT-BLUE BUTTES COMPRESSOR STATION | MCKENZIE COUNTY, McKenzie, ND | Pass | U.S. EPA |
| 2025-10-28 | TAT-BLUE BUTTES COMPRESSOR STATION | MCKENZIE COUNTY, McKenzie, ND | Pass | U.S. EPA |
| 2025-10-28 | TAT-BLUE BUTTES COMPRESSOR STATION | MCKENZIE COUNTY, McKenzie, ND | Pass | U.S. EPA |
| 2025-10-28 | TAT-BLUE BUTTES COMPRESSOR STATION | MCKENZIE COUNTY, McKenzie, ND | Pass | U.S. EPA |
| 2025-10-28 | TAT-BLUE BUTTES COMPRESSOR STATION | MCKENZIE COUNTY, McKenzie, ND | Pass | U.S. EPA |
| 2025-10-28 | BUFFALO COMPRESSOR STATION | MANDAREE SEGMENT, Dunn, ND | Pass | U.S. EPA |
| 2025-10-28 | BUFFALO COMPRESSOR STATION | MANDAREE SEGMENT, Dunn, ND | Pass | U.S. EPA |
| 2025-10-28 | BUFFALO COMPRESSOR STATION | MANDAREE SEGMENT, Dunn, ND | Pass | U.S. EPA |
| 2025-10-23 | AMERICAN CRYSTAL SUGAR COMPANY (ACS) - DRAYTON PLANT - AQ | DRAYTON, Pembina, ND | Pass | State |
| 2025-10-23 | AMERICAN CRYSTAL SUGAR COMPANY (ACS) - DRAYTON PLANT - AQ | DRAYTON, Pembina, ND | Pass | State |
| 2025-10-23 | HILAND PARTNERS HOLDINGS LLC - STONY CREEK COMPRESSOR STATION | WILLISTON, Williams, ND | Pass | State |
| 2025-10-16 | HILAND PARTNERS HOLDINGS LLC - EPPING COMPRESSOR STATION | EPPING, Williams, ND | N/A | State |
| 2025-10-15 | HESS TIOGA GAS PLANT LLC - TIOGA GAS PLANT - AQ | TIOGA, Williams, ND | Pass | State |
| 2025-10-14 | BASIN ELECTRIC POWER COOPERATIVE - PIONEER GENERATION STATION - AQ | WILLISTON, Williams, ND | Pass | State |
| 2025-10-09 | ONEOK ROCKIES MIDSTREAM, L.L.C. - BEAVERTAIL COMPRESSOR STATION - AQ | WATFORD CITY, McKenzie, ND | Pass | State |
| 2025-10-08 | ROBERT'S TRUST COMPRESSOR STATION | DUNN COUNTY, Dunn, ND | Pass | U.S. EPA |
| 2025-10-08 | ROBERT'S TRUST COMPRESSOR STATION | DUNN COUNTY, Dunn, ND | Pass | U.S. EPA |
| 2025-10-08 | ROBERT'S TRUST COMPRESSOR STATION | DUNN COUNTY, Dunn, ND | Pass | U.S. EPA |
| 2025-10-07 | ROBERT'S TRUST COMPRESSOR STATION | DUNN COUNTY, Dunn, ND | Pass | U.S. EPA |
| 2025-10-07 | ROBERT'S TRUST COMPRESSOR STATION | DUNN COUNTY, Dunn, ND | Pass | U.S. EPA |
| 2025-10-06 | ROBERT'S TRUST COMPRESSOR STATION | DUNN COUNTY, Dunn, ND | Pass | U.S. EPA |
| 2025-10-02 | ROBERT'S TRUST COMPRESSOR STATION | DUNN COUNTY, Dunn, ND | Pass | U.S. EPA |
| 2025-10-01 | BLUE BUTTES COMPRESSOR STATION AND PUMP STATION | MCKENZIE COUNTY, McKenzie, ND | Pass | U.S. EPA |
| 2025-09-30 | ANDEAVOR FIELD SERVICES LLC - STANLEY COMPRESSOR STATION - AQ | STANLEY, Mountrail, ND | Pass | State |
| 2025-09-25 | GREAT RIVER ENERGY (GRE) - SPIRITWOOD STATION - AQ | SPIRITWOOD, Stutsman, ND | Pass | State |
| 2025-09-19 | ARCHER DANIELS MIDLAND COMPANY (ADM) - ENDERLIN FACILITY - AQ | ENDERLIN, Ransom, ND | Pass | State |
| 2025-09-17 | TARGA BADLANDS JUNCTION COMPRESSOR STATION | MCKENZIE COUNTY, McKenzie, ND | Pass | U.S. EPA |
| 2025-09-17 | TARGA BADLANDS JUNCTION COMPRESSOR STATION | MCKENZIE COUNTY, McKenzie, ND | Pass | U.S. EPA |
| 2025-09-17 | TARGA BADLANDS JUNCTION COMPRESSOR STATION | MCKENZIE COUNTY, McKenzie, ND | Pass | U.S. EPA |
| 2025-09-17 | BLUE BUTTES COMPRESSOR STATION AND PUMP STATION | MCKENZIE COUNTY, McKenzie, ND | Pass | U.S. EPA |
| 2025-09-17 | BLUE BUTTES COMPRESSOR STATION AND PUMP STATION | MCKENZIE COUNTY, McKenzie, ND | Pass | U.S. EPA |
| 2025-09-17 | BLUE BUTTES COMPRESSOR STATION AND PUMP STATION | MCKENZIE COUNTY, McKenzie, ND | Pass | U.S. EPA |
| 2025-09-17 | ONEOK ROCKIES MIDSTREAM, L.L.C. - ALEXANDER COMPRESSOR STATION | ALEXANDER, McKenzie, ND | Pass | State |
| 2025-09-11 | WBI ENERGY TRANSMISSION, INC. - CHARBONNEAU COMPRESSOR STATION - AQ | CARTWRIGHT, McKenzie, ND | N/A | State |
| 2025-09-09 | CARGILL, INC. - CARGILL OILSEEDS PROCESSING - AQ | WEST FARGO, Cass, ND | Pass | State |
| 2025-09-09 | HILAND PARTNERS HOLDINGS LLC - 4RUNNER COMPRESSOR STATION | WILLISTON, Williams, ND | Pass | State |
| 2025-09-04 | TESORO REFINING & MARKETING COMPANY LLC - MARATHON MANDAN REFINERY - AQ | MANDAN, Morton, ND | Pass | State |
| 2025-08-26 | HILAND PARTNERS HOLDINGS LLC - BETHEL COMPRESSOR STATION | WILLISTON, Williams, ND | Pass | State |
| 2025-08-20 | WBI ENERGY TRANSMISSION, INC. - MANNING COMPRESSOR STATION | MANNING, Dunn, ND | N/A | State |
| 2025-08-19 | OTTER TAIL POWER COMPANY - COYOTE STATION - AQ | BEULAH, Mercer, ND | Pass | State |
| 2025-08-06 | JOHNSON COMPRESSOR STATION | MANDAREE, McKenzie, ND | Pass | U.S. EPA |
| 2025-08-06 | JOHNSON COMPRESSOR STATION | MANDAREE, McKenzie, ND | Pass | U.S. EPA |
| 2025-08-06 | JOHNSON COMPRESSOR STATION | MANDAREE, McKenzie, ND | Pass | U.S. EPA |
| 2025-08-05 | WBI ENERGY TRANSMISSION, INC. - CHARBONNEAU COMPRESSOR STATION - AQ | CARTWRIGHT, McKenzie, ND | N/A | State |
| 2025-08-04 | HILAND PARTNERS HOLDINGS LLC - NORSE GAS PLANT | MCGREGOR, Divide, ND | Pass | State |
| 2025-07-22 | HILAND PARTNERS HOLDINGS LLC - STONY CREEK COMPRESSOR STATION | WILLISTON, Williams, ND | Pass | State |
| 2025-07-17 | NORTHERN BORDER PIPELINE COMPANY - ARNEGARD COMPRESSOR STATION - AQ | ARNEGARD, McKenzie, ND | Pass | State |
| 2025-07-16 | NORTHERN BORDER PIPELINE COMPANY - MANNING COMPRESSOR STATION - AQ | MANNING, Dunn, ND | Pass | State |
| 2025-07-15 | NORTHERN BORDER PIPELINE COMPANY - ZEELAND COMPRESSOR STATION - AQ | ZEELAND, McIntosh, ND | Pass | State |
| 2025-07-01 | HILAND PARTNERS HOLDINGS LLC - NORSE GAS PLANT | MCGREGOR, Divide, ND | Pass | State |
| 2025-06-25 | ONEOK ROCKIES MIDSTREAM, L.L.C. - ANTELOPE COMPRESSOR STATION - AQ | NEW TOWN, McKenzie, ND | Pass | State |
| 2025-06-25 | BASIN ELECTRIC POWER COOPERATIVE - PIONEER GENERATION STATION - AQ | WILLISTON, Williams, ND | Pass | State |
| 2025-06-24 | BASIN ELECTRIC POWER COOPERATIVE - PIONEER GENERATION STATION - AQ | WILLISTON, Williams, ND | Pass | State |
| 2025-06-19 | ALLIANCE PIPELINE, L.P. - FAIRMOUNT COMPRESSOR STATION - AQ | FAIRMOUNT, Richland, ND | Pass | State |
| 2025-06-18 | ALLIANCE PIPELINE, L.P. - WIMBLEDON COMPRESSOR STATION - AQ | WIMBLEDON, Barnes, ND | Pass | State |
| 2025-06-17 | ALLIANCE PIPELINE, L.P. - TOWNER COMPRESSOR STATION - AQ | TOWNER, McHenry, ND | Pass | State |
| 2025-06-13 | HILAND PARTNERS HOLDINGS LLC - ALEX COMPRESSOR STATION | WATFORD CITY, McKenzie, ND | Pass | State |
| 2025-06-12 | HILAND PARTNERS HOLDINGS LLC - 4RUNNER COMPRESSOR STATION | WILLISTON, Williams, ND | Pass | State |
| 2025-06-03 | CITY OF MANDAN - LANDFILL AIR CURTAIN DESTRUCTOR - AQ | MANDAN, Morton, ND | Pass | State |
| 2025-06-03 | HILAND PARTNERS HOLDINGS LLC - EPPING COMPRESSOR STATION | EPPING, Williams, ND | Pass | State |
| 2025-05-29 | NORTHERN BORDER PIPELINE COMPANY - ST. ANTHONY COMPRESSOR STATION - AQ | ST. ANTHONY, Morton, ND | Pass | State |
| 2025-05-28 | NORTHERN BORDER PIPELINE COMPANY - GLEN ULLIN COMPRESSOR STATION - AQ | GLEN ULLIN, Morton, ND | Pass | State |
| 2025-05-19 | HILAND PARTNERS HOLDINGS LLC - RIVERS EDGE COMPRESSOR STATION | WILLISTON, McKenzie, ND | Pass | State |
| 2025-05-13 | ROBERT'S TRUST COMPRESSOR STATION | DUNN COUNTY, Dunn, ND | Pass | U.S. EPA |
| 2025-05-13 | HILAND PARTNERS HOLDINGS LLC - WATFORD CITY GAS PLANT - AQ | ALEXANDER, McKenzie, ND | Pass | State |
| 2025-05-07 | ROBERT'S TRUST COMPRESSOR STATION | DUNN COUNTY, Dunn, ND | Pass | U.S. EPA |
| 2025-05-07 | ROBERT'S TRUST COMPRESSOR STATION | DUNN COUNTY, Dunn, ND | Fail | U.S. EPA |
| 2025-05-06 | ROBERT'S TRUST COMPRESSOR STATION | DUNN COUNTY, Dunn, ND | Pass | U.S. EPA |
| 2025-05-06 | ROBERT'S TRUST COMPRESSOR STATION | DUNN COUNTY, Dunn, ND | Pass | U.S. EPA |
| 2025-05-06 | ROBERT'S TRUST COMPRESSOR STATION | DUNN COUNTY, Dunn, ND | Pass | U.S. EPA |
| 2025-05-05 | ROBERT'S TRUST COMPRESSOR STATION | DUNN COUNTY, Dunn, ND | Pass | U.S. EPA |
| 2025-05-05 | TARGA BADLANDS, LLC - HAWKEYE COMPRESSOR STATION - AQ | KEENE, McKenzie, ND | N/A | State |
| 2025-04-30 | TARGA BADLANDS, LLC - LITTLE MISSOURI GAS PLANT (LMGP) AND SMOKEY COMPRESSOR STA | WATFORD CITY, McKenzie, ND | N/A | State |
| 2025-04-29 | HESS NORTH DAKOTA PIPELINES LLC - HAWKEYE GAS FACILITY - AQ | CHARLSON, McKenzie, ND | Pass | State |
| 2025-04-26 | ROUGH RIDER BAKKEN G&P LLC, A SUBSIDIARY OF ENERGY TRANSFER, LP - WILD BASIN GAS | WATFORD CITY, McKenzie, ND | Pass | State |
| 2025-04-25 | ROUGH RIDER BAKKEN G&P LLC, A SUBSIDIARY OF ENERGY TRANSFER, LP - WILD BASIN GAS | WATFORD CITY, McKenzie, ND | Pass | State |
| 2025-04-25 | ROUGH RIDER BAKKEN G&P LLC, A SUBSIDIARY OF ENERGY TRANSFER, LP - WILD BASIN GAS | WATFORD CITY, McKenzie, ND | Pass | State |
| 2025-04-25 | ROUGH RIDER BAKKEN G&P LLC, A SUBSIDIARY OF ENERGY TRANSFER, LP - WILD BASIN GAS | WATFORD CITY, McKenzie, ND | Pass | State |
| 2025-04-24 | TARGA- CLARK'S CREEK COMPRESSOR STATION | KEENE, McKenzie, ND | Pass | U.S. EPA |
| 2025-04-24 | TARGA- CLARK'S CREEK COMPRESSOR STATION | KEENE, McKenzie, ND | Pass | U.S. EPA |
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Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.