EPA Air · stack tests by county and year
Air-emissions stack tests in Jefferson County, Montana, 2022
- 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 Jefferson County, Montana during 2022. 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 Jefferson County facility page.
Air-emissions stack tests in Jefferson County, other years
Air-emissions stack tests recorded in Jefferson County, Montana, 2022
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2022-11-09 | ASH GROVE CEMENT | Pass | State |
| 2022-11-07 | ASH GROVE CEMENT | Pass | State |
| 2022-07-20 | ASH GROVE CEMENT | Pass | State |
| 2022-07-20 | ASH GROVE CEMENT | Pass | State |
| 2022-07-20 | ASH GROVE CEMENT | 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 Jefferson county, MT, in 2022. It lists 5 stack tests recorded in 2022.