EPA Air · stack tests by county and year
Air-emissions stack tests in Glacier County, Montana, 2022
- 12Stack 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 Glacier 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 Glacier County facility page.
Air-emissions stack tests in Glacier County, other years
Air-emissions stack tests recorded in Glacier County, Montana, 2022
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2022-10-17 | NORTHWESTERN ENERGY MAINLINE #1 | Pass | State |
| 2022-10-17 | NORTHWESTERN ENERGY MAINLINE #1 | Pass | State |
| 2022-10-17 | NORTHWESTERN ENERGY MAINLINE #1 | Pass | State |
| 2022-10-17 | NORTHWESTERN ENERGY MAINLINE #1 | Pass | State |
| 2022-10-17 | NORTHWESTERN ENERGY MAINLINE #1 | Pass | State |
| 2022-10-17 | NORTHWESTERN ENERGY MAINLINE #1 | Pass | State |
| 2022-04-06 | NORTHWESTERN ENERGY MAINLINE #1 | Pass | State |
| 2022-04-06 | NORTHWESTERN ENERGY MAINLINE #1 | Pass | State |
| 2022-04-06 | NORTHWESTERN ENERGY MAINLINE #1 | Pass | State |
| 2022-04-06 | NORTHWESTERN ENERGY MAINLINE #1 | Pass | State |
| 2022-04-06 | NORTHWESTERN ENERGY MAINLINE #1 | Pass | State |
| 2022-04-06 | NORTHWESTERN ENERGY MAINLINE #1 | 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, listing stack tests in Glacier county, MT, for 2022. It records 12 stack tests for 2022.