EPA Air · stack tests by county and year
Air-emissions stack tests in Rosebud County, Montana, 2022
- 13Stack 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 Rosebud 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 Rosebud County facility page.
Rosebud County, Montana, 2022
Air-emissions stack tests in Rosebud County, other years
Air-emissions stack tests recorded in Rosebud County, Montana, 2022
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2022-11-16 | WILLISTON BASIN - HATHAWAY STATION | Pass | State |
| 2022-06-22 | WILLISTON BASIN - HATHAWAY STATION | Pass | State |
| 2022-06-02 | COLSTRIP STEAM ELECTRIC STATION | Pass | State |
| 2022-06-02 | COLSTRIP STEAM ELECTRIC STATION | Pass | State |
| 2022-03-16 | COLSTRIP STEAM ELECTRIC STATION | Pass | State |
| 2022-03-16 | COLSTRIP STEAM ELECTRIC STATION | Pass | State |
| 2022-03-16 | COLSTRIP STEAM ELECTRIC STATION | Pass | State |
| 2022-03-15 | COLSTRIP STEAM ELECTRIC STATION | Pass | State |
| 2022-03-04 | COLSTRIP STEAM ELECTRIC STATION | Pass | State |
| 2022-03-04 | COLSTRIP STEAM ELECTRIC STATION | Pass | State |
| 2022-01-23 | COLSTRIP ENERGY LTD PARTNERSHIP | Pass | State |
| 2022-01-06 | COLSTRIP STEAM ELECTRIC STATION | Pass | State |
| 2022-01-06 | COLSTRIP STEAM ELECTRIC STATION | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.