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.
What this page shows
This page covers Clean Air Act facilities in the EPA air register with violations in MT in 2018. It lists 13 violations recorded in 2018.