EPA Air · stack tests by county and year
Air-emissions stack tests in Polk County, Minnesota, 2025
- 6Stack 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 Polk 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 Polk County facility page.
Polk County, Minnesota, 2025
Air-emissions stack tests in Polk County, other years
Air-emissions stack tests recorded in Polk County, Minnesota, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-12-02 | AMERICAN CRYSTAL SUGAR - CROOKSTON | Pass | State |
| 2025-11-24 | AMERICAN CRYSTAL SUGAR - EAST GRAND FORKS | Pass | State |
| 2025-06-30 | POLK COUNTY RESOURCE RECOVERY FACILITY | Pass | State |
| 2025-05-02 | VIKING GAS TRANSMISSION - ANGUS COMPRESSOR STATION | Pass | State |
| 2025-04-22 | POLK COUNTY RESOURCE RECOVERY FACILITY | Fail | State |
| 2025-02-04 | AMERICAN CRYSTAL SUGAR - EAST GRAND FORKS | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.