EPA Air · stack tests by county and year
Air-emissions stack tests in Washington County, Minnesota, 2025
- 12Stack 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 Washington 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 Washington County facility page.
Washington County, Minnesota, 2025
Air-emissions stack tests in Washington County, other years
Air-emissions stack tests recorded in Washington County, Minnesota, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-12-05 | XCEL ENERGY - ALLEN S KING GENERATING PLANT | Pass | State |
| 2025-12-02 | XCEL ENERGY - ALLEN S KING GENERATING PLANT | Pass | State |
| 2025-10-16 | MARATHON SAINT PAUL PARK REFINERY | N/A | State |
| 2025-10-06 | ANDERSEN CORPORATION | Pass | State |
| 2025-08-21 | MARATHON SAINT PAUL PARK REFINERY | N/A | State |
| 2025-07-22 | XCEL ENERGY - ALLEN S KING GENERATING PLANT | Pass | State |
| 2025-07-08 | MARATHON SAINT PAUL PARK REFINERY | Pass | State |
| 2025-05-22 | MARATHON SAINT PAUL PARK REFINERY | N/A | State |
| 2025-05-21 | 3M CHEMICAL OPERATIONS' COTTAGE GROVE FACILITY - ABRASIVES | Pass | State |
| 2025-04-29 | LSP COTTAGE GROVE COGENERATION FACILITY | Pass | State |
| 2025-04-08 | ANDERSEN CORPORATION | Pass | State |
| 2025-01-22 | ANDERSEN CORPORATION | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.