EPA Air · stack tests by county and year
Air-emissions stack tests in Dakota County, Minnesota, 2025
- 33Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Each row below is one stack test recorded against a source in Dakota County, Minnesota during 2025. A facility can appear several times: this is the year’s record of what happened, not a list of places. The sources themselves are on the Dakota County facility page.
Dakota County, Minnesota, 2025
- Inspections 11
Air-emissions stack tests in Dakota County, other years
Air-emissions stack tests recorded in Dakota County, Minnesota, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-12-18 | FLINT HILLS RESOURCES PINE BEND REFINERY | Pass | State |
| 2025-12-16 | NORTHERN NATURAL GAS - FARMINGTON | Pass | State |
| 2025-12-09 | FLINT HILLS RESOURCES PINE BEND REFINERY | Pass | State |
| 2025-12-02 | GOPHER RESOURCE LLC | Pass | State |
| 2025-11-18 | CEMSTONE NONMETALLIC | Pass | State |
| 2025-10-30 | AMRIZE MIDWEST INC - NONMETALLIC | Pass | State |
| 2025-10-29 | FLINT HILLS RESOURCES PINE BEND REFINERY | Pass | State |
| 2025-10-29 | AMRIZE MIDWEST INC - NONMETALLIC | Pass | State |
| 2025-10-28 | FLINT HILLS RESOURCES PINE BEND REFINERY | Pass | State |
| 2025-10-21 | FLINT HILLS RESOURCES PINE BEND REFINERY | Pass | State |
| 2025-10-14 | EGA SPECTRO ALLOYS | Pass | State |
| 2025-10-01 | MET COUNCIL - SENECA WWTP | Pass | State |
| 2025-09-30 | MCNAMARA CONTRACTING INC | Pass | State |
| 2025-08-29 | FLINT HILLS RESOURCES PINE BEND REFINERY | Pass | State |
| 2025-08-14 | GOPHER RESOURCE LLC | Pass | State |
| 2025-08-12 | GOPHER RESOURCE LLC | Pass | State |
| 2025-08-12 | COMMERCIAL ASPHALT CO - PLANT 902 | Pass | State |
| 2025-08-12 | LAKEVILLE - KELLY PIT | Pass | State |
| 2025-08-12 | DAKOTA AGGREGATES - UMORE PARK FACILITY | Pass | State |
| 2025-08-04 | AMRIZE MIDWEST INC - NONMETALLIC | Pass | State |
| 2025-06-25 | FLINT HILLS RESOURCES PINE BEND REFINERY | N/A | State |
| 2025-06-24 | FLINT HILLS RESOURCES PINE BEND REFINERY | N/A | State |
| 2025-06-19 | ARDENT MILLS LLC HASTINGS, MN | Pass | State |
| 2025-06-10 | FLINT HILLS RESOURCES PINE BEND REFINERY | Pass | State |
| 2025-05-27 | FLINT HILLS RESOURCES PINE BEND REFINERY | Pass | State |
| 2025-05-23 | FLINT HILLS RESOURCES PINE BEND REFINERY | N/A | State |
| 2025-04-08 | GOPHER RESOURCE LLC | Pass | State |
| 2025-03-24 | FLINT HILLS RESOURCES PINE BEND REFINERY | Pass | State |
| 2025-03-20 | FLINT HILLS RESOURCES PINE BEND REFINERY | Pass | State |
| 2025-03-19 | FLINT HILLS RESOURCES PINE BEND REFINERY | Pass | State |
| 2025-02-13 | FLINT HILLS RESOURCES PINE BEND REFINERY | Pass | State |
| 2025-01-08 | MET COUNCIL - SENECA WWTP | Pass | State |
| 2025-01-08 | MET COUNCIL - SENECA WWTP | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.