EPA Air · violations by state and year
High-priority air violations in Montana, 2018
- 13Violations
A high-priority violation is the most serious class of Clean Air Act non-compliance an agency records against a source; a federally reportable violation is the next step down in severity. Every violation below was recorded against a source in Montana during 2018; one facility can appear more than once, because this is a record of what happened rather than a list of places.
Counties in Montana, 2018
Montana, other years
High-priority air violations recorded in Montana, 2018
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2018-12-31 | WEYERHAEUSER-EVERGREEN — high-priority violation on file | KALISPELL, Flathead, MT | Earliest FRV determination | State |
| 2018-11-28 | ROCKY MOUNTAIN POWER | HARDIN, Big Horn, MT | Earliest FRV determination | State |
| 2018-10-30 | ROCKY MOUNTAIN POWER | HARDIN, Big Horn, MT | Earliest FRV determination | State |
| 2018-07-31 | BILLINGS REFINERY | BILLINGS, Yellowstone, MT | Earliest FRV determination | State |
| 2018-06-14 | MONTANA SILVERSMITHS INC | COLUMBUS, Stillwater, MT | HPV day-zero determination | State |
| 2018-06-06 | CALUMET MONTANA REFINING — high-priority violation on file | GREAT FALLS, Cascade, MT | Earliest FRV determination | State |
| 2018-06-01 | CALUMET MONTANA REFINING — high-priority violation on file | GREAT FALLS, Cascade, MT | HPV day-zero determination | State |
| 2018-05-29 | WESTERN SUGAR COOPERATIVE — high-priority violation on file | BILLINGS, Yellowstone, MT | HPV day-zero determination | State |
| 2018-04-19 | BILLINGS REFINERY | BILLINGS, Yellowstone, MT | Earliest FRV determination | State |
| 2018-04-15 | CALUMET MONTANA REFINING — high-priority violation on file | GREAT FALLS, Cascade, MT | HPV day-zero determination | State |
| 2018-03-14 | WESTERN SUGAR COOPERATIVE — high-priority violation on file | BILLINGS, Yellowstone, MT | HPV day-zero determination | State |
| 2018-01-12 | BILLINGS REFINERY | BILLINGS, Yellowstone, MT | Earliest FRV determination | State |
| 2018-01-01 | PAR MONTANA BILLINGS REFINERY | BILLINGS, Yellowstone, MT | Earliest FRV determination | State |
Dates as filed by the agency that recorded the violation. Figures from EPA’s ICIS-AIR download.