EPA Air · stack tests by county and year
Air-emissions stack tests in Clay County, Minnesota, 2025
- 8Stack 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 Clay 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 Clay County facility page.
Clay County, Minnesota, 2025
Air-emissions stack tests in Clay County, other years
Air-emissions stack tests recorded in Clay County, Minnesota, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-11-11 | AMERICAN CRYSTAL SUGAR - MOORHEAD — high-priority violation on file | Pass | State |
| 2025-11-10 | AMERICAN CRYSTAL SUGAR - MOORHEAD — high-priority violation on file | Pass | State |
| 2025-11-05 | AMERICAN CRYSTAL SUGAR - MOORHEAD — high-priority violation on file | Pass | State |
| 2025-11-04 | AMERICAN CRYSTAL SUGAR - MOORHEAD — high-priority violation on file | Fail | State |
| 2025-10-23 | AMERICAN CRYSTAL SUGAR - MOORHEAD — high-priority violation on file | Pass | State |
| 2025-10-07 | AMERICAN CRYSTAL SUGAR - MOORHEAD — high-priority violation on file | Pass | State |
| 2025-10-07 | CENTENNIAL GENERATING STATION | Pass | State |
| 2025-08-12 | MOORHEAD CITY OF - AIR CURTAIN INCINERATOR | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.