EPA Air · stack tests by county and year
Air-emissions stack tests in Lewis and Clark County, Montana, 2021
- 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 Lewis and Clark County, Montana 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 Lewis and Clark County facility page.
Air-emissions stack tests in Lewis and Clark County, other years
Air-emissions stack tests recorded in Lewis and Clark County, Montana, 2021
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2021-08-27 | AUGUSTA MAIN LINE #3 (STA 051) | Pass | State |
| 2021-08-27 | AUGUSTA MAIN LINE #3 (STA 051) | Pass | State |
| 2021-01-22 | AUGUSTA MAIN LINE #3 (STA 051) | Pass | State |
| 2021-01-22 | AUGUSTA MAIN LINE #3 (STA 051) | Pass | State |
| 2021-01-22 | AUGUSTA MAIN LINE #3 (STA 051) | Pass | State |
| 2021-01-22 | AUGUSTA MAIN LINE #3 (STA 051) | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.