EPA Air · stack tests by county and year
Air-emissions stack tests in Dane County, Wisconsin, 2026
- 9Stack 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 Dane County, Wisconsin 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 Dane County facility page.
Dane County, Wisconsin, 2026
Air-emissions stack tests in Dane County, other years
Air-emissions stack tests recorded in Dane County, Wisconsin, 2026
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2026-06-24 | HYDRITE CHEMICAL CO. — high-priority violation on file | N/A | State |
| 2026-06-23 | MG&E WEST CAMPUS COGENERATION FTY | Pass | State |
| 2026-06-18 | MENDOTA MENTAL HEALTH INSTITUTE | Pass | State |
| 2026-05-27 | AMRIZE BUILDING ENVELOPE LLC | Pass | State |
| 2026-05-19 | AMERICAN PACKAGING CORP - DE FOREST | Pass | State |
| 2026-04-28 | HYDRITE CHEMICAL CO. — high-priority violation on file | Pass | State |
| 2026-04-07 | WI DOA / UW-MADISON WALNUT ST PLT | Pass | State |
| 2026-02-10 | WI DOA / UW-MADISON WALNUT ST PLT | Pass | State |
| 2026-02-09 | UW MADISON CHARTER STREET HEATING PLANT (DOA) | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.