EPA Air · stack tests by county and year
Air-emissions stack tests in Alpena County, Michigan, 2025
- 11Stack 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 Alpena County, Michigan during 2025. 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 Alpena County facility page.
Alpena County, Michigan, 2025
Air-emissions stack tests in Alpena County, other years
Air-emissions stack tests recorded in Alpena County, Michigan, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-12-19 | AMRIZE CEMENT INC. — high-priority violation on file | Pass | State |
| 2025-11-25 | AMRIZE CEMENT INC. — high-priority violation on file | Pass | State |
| 2025-11-17 | AMRIZE CEMENT INC. — high-priority violation on file | Pass | State |
| 2025-10-28 | AMRIZE CEMENT INC. — high-priority violation on file | Pass | State |
| 2025-10-01 | AMRIZE CEMENT INC. — high-priority violation on file | Pass | State |
| 2025-07-30 | AMRIZE CEMENT INC. — high-priority violation on file | Pass | State |
| 2025-07-29 | AMRIZE CEMENT INC. — high-priority violation on file | Pass | State |
| 2025-07-17 | AMRIZE CEMENT INC. — high-priority violation on file | Pass | State |
| 2025-07-17 | AMRIZE CEMENT INC. — high-priority violation on file | Pass | State |
| 2025-07-10 | AMRIZE CEMENT INC. — high-priority violation on file | Pass | State |
| 2025-04-11 | AMRIZE CEMENT 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.