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.
What this page shows
This page covers Clean Air Act facilities in the EPA air register with stack tests in Dane county, WI, for 2026. Stack tests recorded in 2026: 9.