EPA Air · stack tests by state, industry and year
Utilities (NAICS 2212): stack tests in North Dakota, 2025
- 3Stack 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 2212. A facility filing more than one industry code is counted under the first one on its record.
Utilities (NAICS 2212) 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
- Utilities (NAICS 2211) 6
- Food manufacturing (NAICS 3113) 5
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 |
| 2025-10-16 | HILAND PARTNERS HOLDINGS LLC - EPPING COMPRESSOR STATION | EPPING, Williams, ND | N/A | State |
| 2025-06-03 | HILAND PARTNERS HOLDINGS LLC - EPPING COMPRESSOR STATION | EPPING, 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.