EPA Air · stack tests by state, industry and year
Chemical manufacturing (NAICS 3251): 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 3251. A facility filing more than one industry code is counted under the first one on its record.
Chemical manufacturing (NAICS 3251) in Minnesota, other years
Other industries in Minnesota, 2026
- Utilities (NAICS 2211) 22
- Petroleum and coal products manufacturing (NAICS 3241) 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 |
|---|---|---|---|---|
| 2026-05-27 | DENCO II LLC | MORRIS, Stevens, MN | Pass | State |
| 2026-04-30 | GUARDIAN ENERGY LLC | JANESVILLE, Waseca, MN | Pass | State |
| 2026-04-16 | HEARTLAND CORN PRODUCTS | WINTHROP, Sibley, MN | Pass | State |
| 2026-04-03 | HEARTLAND CORN PRODUCTS | WINTHROP, Sibley, MN | Pass | State |
| 2026-03-31 | HERON LAKE BIOENERGY LLC | HERON LAKE, Jackson, MN | Pass | State |
| 2026-03-25 | AL-CORN CLEAN FUEL LLC | CLAREMONT, Dodge, MN | Pass | State |
| 2026-03-17 | BUSHMILLS ETHANOL INC | ATWATER, Kandiyohi, MN | Pass | State |
| 2026-02-17 | POET BIOREFINING GLENVILLE LLC | ALBERT LEA, Freeborn, 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.