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
- Inspections 10
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.
What this page shows
This page covers Clean Air Act facilities in the EPA air register and stack tests in Alpena county, MI, for 2025. It lists 11 stack tests recorded in 2025.