EPA Air · stack tests by county and year
Air-emissions stack tests in Calhoun County, Michigan, 2026
- 4Stack 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 Calhoun County, Michigan 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 Calhoun County facility page.
Calhoun County, Michigan, 2026
Air-emissions stack tests in Calhoun County, other years
Air-emissions stack tests recorded in Calhoun County, Michigan, 2026
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2026-06-30 | I.I. STANLEY COMPANY, INC. | Pass | State |
| 2026-05-13 | DENSO MANUFACTURING MICHIGAN, INC. | Pass | State |
| 2026-04-29 | KNAUF INSULATION, INC. | Pass | State |
| 2026-03-18 | BREMBO NORTH AMERICA, INC. — high-priority violation on file | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.