EPA Air · stack tests by county and year
Air-emissions stack tests in Yellowstone County, Montana, 2017
- 105Stack 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 Yellowstone County, Montana during 2017. 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 Yellowstone County facility page.
Yellowstone County, Montana, 2017
Air-emissions stack tests in Yellowstone County, other years
Air-emissions stack tests recorded in Yellowstone County, Montana, 2017
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2017-01-13 | BILLINGS REFINERY | Pass | State |
| 2017-01-13 | BILLINGS REFINERY | Pass | State |
| 2017-01-13 | BILLINGS REFINERY | Pass | State |
| 2017-01-13 | BILLINGS REFINERY | Pass | State |
| 2017-01-13 | PAR MONTANA BILLINGS REFINERY | Pass | State |
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Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.