EPA Air · stack tests by county and year
Air-emissions stack tests in Washington County, Minnesota, 2026
- 7Stack 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 2026. 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.
Air-emissions stack tests in Washington County, other years
Air-emissions stack tests recorded in Washington County, Minnesota, 2026
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2026-06-25 | XCEL ENERGY - ALLEN S KING GENERATING PLANT | Pass | State |
| 2026-06-11 | MARATHON SAINT PAUL PARK REFINERY | Pass | State |
| 2026-05-04 | LSP COTTAGE GROVE COGENERATION FACILITY | Pass | State |
| 2026-04-08 | LSP COTTAGE GROVE COGENERATION FACILITY | Pass | State |
| 2026-03-31 | ANDERSEN CORPORATION | Pass | State |
| 2026-01-27 | XCEL ENERGY - ALLEN S KING GENERATING PLANT | N/A | State |
| 2026-01-20 | ANDERSEN CORPORATION | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.