EPA Air · stack tests by county and year
Air-emissions stack tests in Monroe County, Michigan, 2026
- 14Stack 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 Monroe 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 Monroe County facility page.
Monroe County, Michigan, 2026
Air-emissions stack tests in Monroe County, other years
Air-emissions stack tests recorded in Monroe County, Michigan, 2026
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2026-07-28 | DTE ELECTRIC COMPANY - MONROE POWER PLANT | Pass | State |
| 2026-07-16 | DTE ELECTRIC COMPANY - MONROE POWER PLANT | Pass | State |
| 2026-06-25 | DTE ELECTRIC COMPANY - MONROE POWER PLANT | Pass | State |
| 2026-05-21 | DTE ELECTRIC COMPANY - MONROE POWER PLANT | Pass | State |
| 2026-04-09 | GUARDIAN INDUSTRIES-CARLETON | Pass | State |
| 2026-03-09 | DTE ELECTRIC COMPANY - MONROE POWER PLANT | Pass | State |
| 2026-03-06 | DTE ELECTRIC COMPANY - MONROE POWER PLANT | Pass | State |
| 2026-03-05 | DTE ELECTRIC COMPANY - MONROE POWER PLANT | Pass | State |
| 2026-03-03 | DTE ELECTRIC COMPANY - MONROE POWER PLANT | Pass | State |
| 2026-02-26 | DTE ELECTRIC COMPANY - MONROE POWER PLANT | Pass | State |
| 2026-02-23 | DTE ELECTRIC COMPANY - MONROE POWER PLANT | Pass | State |
| 2026-02-12 | GERDAU MACSTEEL MONROE MILL — high-priority violation on file | Pass | State |
| 2026-02-06 | DTE ELECTRIC COMPANY - MONROE POWER PLANT | Pass | State |
| 2026-01-30 | GUARDIAN INDUSTRIES-CARLETON | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.