EPA Air · stack tests by state, industry and year
Utilities (NAICS 2211): stack tests in North Dakota, 2025
- 6Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Each row is one stack test recorded during 2025 at a North Dakota source whose primary industry code is NAICS 2211. A facility filing more than one industry code is counted under the first one on its record.
Utilities (NAICS 2211) in North Dakota, other years
Other industries in North Dakota, 2025
- Oil and gas extraction (NAICS 2111) 76
- Mining support (NAICS 2131) 30
- Pipeline transportation (NAICS 4862) 16
- Food manufacturing (NAICS 3113) 5
- Utilities (NAICS 2212) 3
Air-emissions stack tests recorded in North Dakota, 2025
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2025-11-11 | BASIN ELECTRIC POWER COOPERATIVE - PIONEER GENERATION STATION - AQ | WILLISTON, Williams, ND | Pass | State |
| 2025-10-14 | BASIN ELECTRIC POWER COOPERATIVE - PIONEER GENERATION STATION - AQ | WILLISTON, Williams, ND | Pass | State |
| 2025-09-25 | GREAT RIVER ENERGY (GRE) - SPIRITWOOD STATION - AQ | SPIRITWOOD, Stutsman, ND | Pass | State |
| 2025-08-19 | OTTER TAIL POWER COMPANY - COYOTE STATION - AQ | BEULAH, Mercer, 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 |
Primary NAICS code as filed on the facility record; dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.