EPA Air · stack tests by state, industry and year
Petroleum and coal products manufacturing (NAICS 3241): stack tests in Minnesota, 2026
- 8Stack 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 2026 at a Minnesota source whose primary industry code is NAICS 3241. A facility filing more than one industry code is counted under the first one on its record.
Petroleum and coal products manufacturing (NAICS 3241) in Minnesota, other years
Other industries in Minnesota, 2026
- Utilities (NAICS 2211) 22
- Chemical manufacturing (NAICS 3251) 8
- Food manufacturing (NAICS 3112) 6
- Food manufacturing (NAICS 3113) 5
- Pipeline transportation (NAICS 4862) 4
- Mining and quarrying (NAICS 2123) 4
- Food manufacturing (NAICS 3116) 3
Air-emissions stack tests recorded in Minnesota, 2026
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2026-06-24 | RJ ZAVORAL AND SONS INC HMA PORTABLE PLANT 1 | EAST GRAND FORKS, Polk, MN | Pass | State |
| 2026-06-11 | MARATHON SAINT PAUL PARK REFINERY | SAINT PAUL PARK, Washington, MN | Pass | State |
| 2026-03-24 | FLINT HILLS RESOURCES PINE BEND REFINERY | ROSEMOUNT, Dakota, MN | Pass | State |
| 2026-03-05 | FLINT HILLS RESOURCES PINE BEND REFINERY | ROSEMOUNT, Dakota, MN | Pass | State |
| 2026-02-18 | FLINT HILLS RESOURCES PINE BEND REFINERY | ROSEMOUNT, Dakota, MN | Pass | State |
| 2026-02-17 | FLINT HILLS RESOURCES PINE BEND REFINERY | ROSEMOUNT, Dakota, MN | Pass | State |
| 2026-02-10 | FLINT HILLS RESOURCES PINE BEND REFINERY | ROSEMOUNT, Dakota, MN | Pass | State |
| 2026-01-13 | FLINT HILLS RESOURCES PINE BEND REFINERY | ROSEMOUNT, Dakota, MN | 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.