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.
What this page shows
This page covers Clean Air Act facilities in the EPA air register with stack tests in Washington county, MN, in 2025. It lists 12 stack tests recorded in 2025.