EPA Air · inspections by state and year
Air-emissions inspections in Montana, 2021
- 29Inspections
A compliance evaluation is the on-site or file review a state, local or federal air agency records against a permitted source. Every inspection below was recorded against a source in Montana during 2021; one facility can appear more than once, because this is a record of what happened rather than a list of places.
Counties in Montana, 2021
Montana, other years
Air-emissions inspections recorded in Montana, 2021
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2021-09-30 | HARDIN COMPRESSOR STATION | WYOLA, Big Horn, MT | FCE Off-Site | U.S. EPA |
| 2021-09-30 | NORTHERN BORDER COMPRESSOR STATION #2 | WOLF POINT, Roosevelt, MT | FCE Off-Site | U.S. EPA |
| 2021-09-30 | BARRETTS MILL | DILLON, Beaverhead, MT | FCE On-Site | State |
| 2021-09-30 | TRIDENT | THREE FORKS, Gallatin, MT | FCE On-Site | State |
| 2021-09-30 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | FCE On-Site | State |
| 2021-09-15 | STILLWATER MINE | NYE, Stillwater, MT | FCE On-Site | State |
| 2021-08-25 | BASIN ELECTRIC POWER COOPERATIVE | BAINVILLE, Roosevelt, MT | FCE On-Site | State |
| 2021-08-24 | CALUMET MONTANA REFINING — high-priority violation on file | GREAT FALLS, Cascade, MT | FCE On-Site | State |
| 2021-08-19 | ASH GROVE CEMENT | CLANCY, Jefferson, MT | FCE On-Site | State |
| 2021-08-06 | MONTANA SILVERSMITHS INC | COLUMBUS, Stillwater, MT | FCE On-Site | State |
| 2021-08-05 | ROCKY MOUNTAIN POWER | HARDIN, Big Horn, MT | FCE On-Site | State |
| 2021-07-23 | MDU - LEWIS & CLARK STATION | SIDNEY, Richland, MT | FCE On-Site | State |
| 2021-07-22 | BILLINGS REFINERY | BILLINGS, Yellowstone, MT | PCE Off-Site | State |
| 2021-07-14 | WEYERHAEUSER-CFALLS — high-priority violation on file | COLUMBIA FALLS, Flathead, MT | FCE On-Site | State |
| 2021-07-14 | ALLIED WASTE SYSTEMS | MISSOULA, Missoula, MT | FCE On-Site | State |
| 2021-07-14 | PHILLIPS 66 COMPANY - MISSOULA | MISSOULA, Missoula, MT | FCE On-Site | State |
| 2021-06-30 | MONTANA SULPHUR & CHEMICAL | BILLINGS, Yellowstone, MT | FCE On-Site | State |
| 2021-06-17 | ROCKY MOUNTAIN LABORATORIES FACILITY | HAMILTON, Ravalli, MT | FCE On-Site | State |
| 2021-06-11 | YELLOWSTONE POWER PLANT — high-priority violation on file | BILLINGS, Yellowstone, MT | FCE On-Site | State |
| 2021-06-04 | PRAIRIE DELL CASCADE GAS PLANT | SHELBY, Toole, MT | FCE On-Site | State |
| 2021-05-10 | WESTERN SUGAR COOPERATIVE — high-priority violation on file | BILLINGS, Yellowstone, MT | FCE On-Site | State |
| 2021-04-30 | BASIN CREEK POWER SERVICES | BUTTE, Silver Bow, MT | FCE On-Site | State |
| 2021-04-26 | WILLISTON BASIN - MONARCH STATION | BAKER, Fallon, MT | FCE Off-Site | State |
| 2021-04-26 | WILLISTON BASIN - FORT PECK STATION | NASHUA, Valley, MT | FCE Off-Site | State |
| 2021-04-26 | WILLISTON BASIN - SACO | SACO, Phillips, MT | FCE Off-Site | State |
| 2021-04-01 | CUT BANK FIELD STATION 025 | CUT BANK, Glacier, MT | FCE Off-Site | State |
| 2021-03-09 | BILLINGS TRANSPORTATION OPERATIONS | BILLINGS, Yellowstone, MT | PCE Off-Site | State |
| 2021-01-25 | DAVE GATES GENERATING STATION AT MILL CREEK | ANACONDA, Deer Lodge, MT | FCE Off-Site | State |
| 2021-01-13 | NORTHERN BORDER PIPELINE CO STA 1 | GLASGOW, Valley, MT | FCE Off-Site | State |
Dates as filed by the agency that recorded the inspection. Figures from EPA’s ICIS-AIR download.