EPA Air · stack tests by county and year
Air-emissions stack tests in Alpena County, Michigan, 2021
- 5Stack 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 2021. 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, 2021
- Inspections 11
Air-emissions stack tests in Alpena County, other years
What stands out
- Stack tests in Alpena County, Michigan, fell from 10 in 2020, the previous year on file, to 5 in 2021.
- The county’s file for stack tests holds 7 years of events, from 2017 through 2026.
- Its 5 stack tests rank 10th of the 32 county cells in Michigan for 2021.
- Its 5 stack tests are 2% of the 256 the state’s file holds for 2021.
Every line is computed by formula from the state’s stored file; nothing is estimated.
Air-emissions stack tests recorded in Alpena County, Michigan, 2021
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2021-12-23 | AMRIZE CEMENT INC. — high-priority violation on file | Pending | State |
| 2021-09-08 | AMRIZE CEMENT INC. — high-priority violation on file | Pass | State |
| 2021-07-29 | AMRIZE CEMENT INC. — high-priority violation on file | Pass | State |
| 2021-05-18 | AMRIZE CEMENT INC. — high-priority violation on file | Pass | State |
| 2021-03-11 | 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 with stack tests in Alpena county, MI, in 2021. It lists 5 stack tests recorded in 2021.