EPA Air · stack tests by county and year
Air-emissions stack tests in Jefferson County, Montana, 2019
- 6Stack 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 2019. 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, 2019
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2019-07-09 | ASH GROVE CEMENT | Pass | State |
| 2019-07-09 | ASH GROVE CEMENT | Pass | State |
| 2019-07-09 | ASH GROVE CEMENT | Pass | State |
| 2019-07-09 | ASH GROVE CEMENT | Pass | State |
| 2019-07-09 | ASH GROVE CEMENT | Pass | State |
| 2019-06-17 | BARRICK GOLDEN SUNLIGHT MINE | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.