EPA Air · stack tests by state, industry and year
Chemical manufacturing (NAICS 3251): stack tests in Minnesota, 2025
- 19Stack 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 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, 2025
- Utilities (NAICS 2211) 52
- Petroleum and coal products manufacturing (NAICS 3241) 26
- Mining and quarrying (NAICS 2122) 16
- Mining and quarrying (NAICS 2123) 15
- Food manufacturing (NAICS 3112) 13
- Paper manufacturing (NAICS 3221) 11
- Pipeline transportation (NAICS 4862) 10
- Food manufacturing (NAICS 3113) 10
- Utilities (NAICS 2213) 9
- Plastics and rubber products manufacturing (NAICS 3261) 5
- Primary metal manufacturing (NAICS 3315) 5
- Primary metal manufacturing (NAICS 3313) 5
- Wood product manufacturing (NAICS 3219) 4
- Hospitals (NAICS 6221) 4
- Paper manufacturing (NAICS 3222) 3
Air-emissions stack tests recorded in Minnesota, 2025
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2025-12-15 | HEARTLAND CORN PRODUCTS | WINTHROP, Sibley, MN | Pass | State |
| 2025-12-12 | AL-CORN CLEAN FUEL LLC | CLAREMONT, Dodge, MN | Pass | State |
| 2025-11-25 | BUSHMILLS ETHANOL INC | ATWATER, Kandiyohi, MN | Pass | State |
| 2025-11-19 | GRANITE FALLS ENERGY LLC | GRANITE FALLS, Yellow Medicine, MN | Pass | State |
| 2025-11-04 | HERON LAKE BIOENERGY LLC | HERON LAKE, Jackson, MN | Pass | State |
| 2025-10-30 | GUARDIAN ENERGY LLC | JANESVILLE, Waseca, MN | Pass | State |
| 2025-10-14 | HEARTLAND CORN PRODUCTS | WINTHROP, Sibley, MN | Pass | State |
| 2025-08-19 | GREEN PLAINS OTTER TAIL LLC | FERGUS FALLS, Otter Tail, MN | Pass | State |
| 2025-08-05 | BUSHMILLS ETHANOL INC | ATWATER, Kandiyohi, MN | Fail | State |
| 2025-07-23 | POET BIOREFINING - PRESTON | PRESTON, Fillmore, MN | Pass | State |
| 2025-07-01 | HEARTLAND CORN PRODUCTS | WINTHROP, Sibley, MN | Pass | State |
| 2025-06-11 | AL-CORN CLEAN FUEL LLC | CLAREMONT, Dodge, MN | Pass | State |
| 2025-05-13 | DENCO II LLC | MORRIS, Stevens, MN | Pass | State |
| 2025-04-08 | HEARTLAND CORN PRODUCTS | WINTHROP, Sibley, MN | Pass | State |
| 2025-03-27 | AL-CORN CLEAN FUEL LLC | CLAREMONT, Dodge, MN | Pass | State |
| 2025-03-18 | HERON LAKE BIOENERGY LLC | HERON LAKE, Jackson, MN | Pass | State |
| 2025-03-04 | AL-CORN CLEAN FUEL LLC | CLAREMONT, Dodge, MN | Fail | State |
| 2025-02-25 | HEARTLAND CORN PRODUCTS | WINTHROP, Sibley, MN | Pass | State |
| 2025-02-18 | GREENFIELD GLOBAL WINNEBAGO LLC | WINNEBAGO, Faribault, 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.