EPA Air · stack tests by county and year
Air-emissions stack tests in St. Clair County, Michigan, 2026
- 23Stack 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 St. Clair 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 St. Clair County facility page.
St. Clair County, Michigan, 2026
- Inspections 23
Air-emissions stack tests in St. Clair County, other years
Air-emissions stack tests recorded in St. Clair County, Michigan, 2026
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2026-07-23 | DTE ST. CLAIR / BELLE RIVER POWER PLANT — high-priority violation on file | Pass | State |
| 2026-07-16 | CONSUMERS ENERGY - ST. CLAIR COMPRESSOR STATION | Pass | State |
| 2026-07-15 | CONSUMERS ENERGY - ST. CLAIR COMPRESSOR STATION | Pass | State |
| 2026-06-29 | DTE ST. CLAIR / BELLE RIVER POWER PLANT — high-priority violation on file | Pass | State |
| 2026-06-25 | DTE ST. CLAIR / BELLE RIVER POWER PLANT — high-priority violation on file | Pass | State |
| 2026-06-24 | DTE GAS COMPANY - BELLE RIVER MILLS COMPRESSOR STATION | Pass | State |
| 2026-06-17 | DTE GAS COMPANY - COLUMBUS COMPRESSOR STATION — high-priority violation on file | Pass | State |
| 2026-06-04 | DTE ST. CLAIR / BELLE RIVER POWER PLANT — high-priority violation on file | Pass | State |
| 2026-05-28 | DTE ST. CLAIR / BELLE RIVER POWER PLANT — high-priority violation on file | Pass | State |
| 2026-05-13 | DTE ST. CLAIR / BELLE RIVER POWER PLANT — high-priority violation on file | Pass | State |
| 2026-05-13 | DTE ST. CLAIR / BELLE RIVER POWER PLANT — high-priority violation on file | Pass | State |
| 2026-05-13 | DTE ELECTRIC COMPANY - GREENWOOD ENERGY CENTER | Pass | State |
| 2026-05-07 | DTE ST. CLAIR / BELLE RIVER POWER PLANT — high-priority violation on file | Pass | State |
| 2026-04-24 | DTE ST. CLAIR / BELLE RIVER POWER PLANT — high-priority violation on file | Fail | State |
| 2026-04-24 | BLUE WATER RENEWABLES — high-priority violation on file | Pass | State |
| 2026-04-14 | DTE ST. CLAIR / BELLE RIVER POWER PLANT — high-priority violation on file | Pass | State |
| 2026-04-14 | SEMCO ENERGY GAS COMPANY - MORTON WELLS FACILITY | Pass | State |
| 2026-03-20 | DTE GAS COMPANY - BELLE RIVER MILLS COMPRESSOR STATION | Pass | State |
| 2026-03-18 | CONSUMERS ENERGY - ST. CLAIR COMPRESSOR STATION | Pass | State |
| 2026-03-11 | DTE ST. CLAIR / BELLE RIVER POWER PLANT — high-priority violation on file | Pass | State |
| 2026-03-05 | DTE GAS COMPANY - BELLE RIVER MILLS COMPRESSOR STATION | Pass | State |
| 2026-02-12 | MARYSVILLE ETHANOL, LLC | Pass | State |
| 2026-02-05 | DTE GAS COMPANY - BELLE RIVER MILLS COMPRESSOR STATION | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.