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.
What this page shows
This page covers Clean Air Act facilities in the EPA air register with stack tests in Polk county, MN, for 2025. Stack tests recorded in 2025: 6.