EPA Air · stack tests by county and year
Air-emissions stack tests in Yellowstone County, Montana, 2022
- 56Stack 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 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 Yellowstone County facility page.
Yellowstone County, Montana, 2022
Air-emissions stack tests in Yellowstone County, other years
Air-emissions stack tests recorded in Yellowstone County, Montana, 2022
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2022-12-28 | WESTERN SUGAR COOPERATIVE — high-priority violation on file | Pass | State |
| 2022-12-27 | BILLINGS REFINERY | Pass | State |
| 2022-12-27 | BILLINGS REFINERY | Pass | State |
| 2022-12-27 | BILLINGS REFINERY | Pass | State |
| 2022-12-27 | BILLINGS REFINERY | Pass | State |
| 2022-12-27 | BILLINGS REFINERY | Pass | State |
| 2022-12-27 | BILLINGS REFINERY | Pass | State |
| 2022-12-27 | BILLINGS REFINERY | Pass | State |
| 2022-12-27 | BILLINGS REFINERY | Pass | State |
| 2022-12-27 | BILLINGS REFINERY | Pass | State |
| 2022-12-27 | BILLINGS REFINERY | Pass | State |
| 2022-12-27 | BILLINGS REFINERY | Pass | State |
| 2022-12-27 | BILLINGS REFINERY | Pass | State |
| 2022-12-19 | CHS INC REFINERY LAUREL | Pass | State |
| 2022-12-12 | YELLOWSTONE POWER PLANT — high-priority violation on file | Pass | State |
| 2022-12-05 | CHS INC REFINERY LAUREL | Pass | State |
| 2022-12-05 | CHS INC REFINERY LAUREL | Pass | State |
| 2022-09-30 | YELLOWSTONE POWER PLANT — high-priority violation on file | Pass | State |
| 2022-09-15 | PAR MONTANA BILLINGS REFINERY | Pass | State |
| 2022-09-14 | CHS INC REFINERY LAUREL | Pass | State |
| 2022-09-14 | CHS INC REFINERY LAUREL | Pass | State |
| 2022-07-27 | CHS INC REFINERY LAUREL | Pass | State |
| 2022-07-27 | CHS INC REFINERY LAUREL | Pass | State |
| 2022-07-27 | CHS INC REFINERY LAUREL | Pass | State |
| 2022-07-27 | CHS INC REFINERY LAUREL | Pass | State |
| 2022-07-27 | CHS INC REFINERY LAUREL | Pass | State |
| 2022-07-27 | CHS INC REFINERY LAUREL | Pass | State |
| 2022-07-27 | CHS INC REFINERY LAUREL | Pass | State |
| 2022-07-22 | CHS INC REFINERY LAUREL | Fail | State |
| 2022-07-21 | PAR MONTANA BILLINGS REFINERY | Pass | State |
| 2022-07-21 | PAR MONTANA BILLINGS REFINERY | Pass | State |
| 2022-07-15 | BILLINGS TRANSPORTATION OPERATIONS | Pass | State |
| 2022-06-30 | CHS INC REFINERY LAUREL | Pass | State |
| 2022-06-30 | CHS INC REFINERY LAUREL | Pass | State |
| 2022-06-29 | CHS INC REFINERY LAUREL | Pass | State |
| 2022-06-29 | CHS INC REFINERY LAUREL | Pass | State |
| 2022-06-29 | CHS INC REFINERY LAUREL | Pass | State |
| 2022-06-29 | CHS INC REFINERY LAUREL | Pass | State |
| 2022-06-29 | PAR MONTANA BULK TERMINAL | Pass | State |
| 2022-06-29 | PAR MONTANA BULK TERMINAL | Pass | State |
| 2022-06-01 | PAR MONTANA BILLINGS REFINERY | Pass | State |
| 2022-05-02 | CHS INC REFINERY LAUREL | Pass | State |
| 2022-05-02 | CHS INC REFINERY LAUREL | Pass | State |
| 2022-05-02 | CHS INC REFINERY LAUREL | Pass | State |
| 2022-05-02 | CHS INC REFINERY LAUREL | Pass | State |
| 2022-05-02 | CHS INC REFINERY LAUREL | Pass | State |
| 2022-05-02 | CHS INC REFINERY LAUREL | Pass | State |
| 2022-05-02 | CHS INC REFINERY LAUREL | Pass | State |
| 2022-05-02 | CHS INC REFINERY LAUREL | Pass | State |
| 2022-04-28 | YELLOWSTONE POWER PLANT — high-priority violation on file | Pass | State |
| 2022-03-23 | PAR MONTANA BILLINGS REFINERY | Pass | State |
| 2022-02-07 | BILLINGS REFINERY | Pass | State |
| 2022-02-04 | BILLINGS REFINERY | Pass | State |
| 2022-02-04 | BILLINGS REFINERY | Pass | State |
| 2022-02-04 | BILLINGS REFINERY | Pass | State |
| 2022-01-28 | WESTERN SUGAR COOPERATIVE — high-priority violation on file | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.