EPA Air · stack tests by state and year
Air-emissions stack tests in Montana, 2018
- 269Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Every stack test 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
- Yellowstone County 95
- Rosebud County 38
- Fallon County 32
- Glacier County 13
- Cascade County 11
- Richland County 8
- Phillips County 8
- Silver Bow County 8
- Deer Lodge County 7
- Valley County 6
- Carbon County 6
- Jefferson County 6
- Dawson County 5
- Big Horn County 5
- McCone County 4
- Flathead County 4
- Gallatin County 4
- Stillwater County 4
Montana, other years
Air-emissions stack tests recorded in Montana, 2018
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2018-12-31 | WILLISTON BASIN - CABIN CREEK | BAKER, Fallon, MT | Pass | State |
| 2018-12-31 | WILLISTON BASIN - CABIN CREEK | BAKER, Fallon, MT | Pass | State |
| 2018-12-31 | WILLISTON BASIN - CABIN CREEK | BAKER, Fallon, MT | Pass | State |
| 2018-12-31 | WBI SANDSTONE CREEK COMPRESSOR STATION | BAKER, Fallon, MT | Pass | State |
| 2018-12-31 | WBI SANDSTONE CREEK COMPRESSOR STATION | BAKER, Fallon, MT | Pass | State |
| 2018-12-31 | WBI SANDSTONE CREEK COMPRESSOR STATION | BAKER, Fallon, MT | Pass | State |
| 2018-12-21 | WILLISTON BASIN - BAKER COMPRESSOR STA | BAKER, Fallon, MT | Pass | State |
| 2018-12-21 | WILLISTON BASIN - FORT PECK STATION | NASHUA, Valley, MT | Pass | State |
| 2018-12-19 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
| 2018-12-18 | CALUMET MONTANA REFINING — high-priority violation on file | GREAT FALLS, Cascade, MT | Pass | State |
| 2018-12-14 | WILLISTON BASIN - CABIN CREEK | BAKER, Fallon, MT | Pass | State |
| 2018-12-14 | WILLISTON BASIN - CABIN CREEK | BAKER, Fallon, MT | Pass | State |
| 2018-12-14 | WILLISTON BASIN - CABIN CREEK | BAKER, Fallon, MT | Pass | State |
| 2018-12-10 | BILLINGS REFINERY | BILLINGS, Yellowstone, MT | Fail | State |
| 2018-12-10 | BILLINGS REFINERY | BILLINGS, Yellowstone, MT | Fail | State |
| 2018-12-10 | BILLINGS REFINERY | BILLINGS, Yellowstone, MT | Pass | State |
| 2018-12-10 | BILLINGS REFINERY | BILLINGS, Yellowstone, MT | Pass | State |
| 2018-12-10 | BILLINGS REFINERY | BILLINGS, Yellowstone, MT | Pass | State |
| 2018-12-10 | BILLINGS REFINERY | BILLINGS, Yellowstone, MT | Pass | State |
| 2018-12-10 | BILLINGS REFINERY | BILLINGS, Yellowstone, MT | Pass | State |
| 2018-12-10 | BILLINGS REFINERY | BILLINGS, Yellowstone, MT | Pass | State |
| 2018-12-10 | BILLINGS REFINERY | BILLINGS, Yellowstone, MT | Pass | State |
| 2018-12-10 | BILLINGS REFINERY | BILLINGS, Yellowstone, MT | Pass | State |
| 2018-12-10 | BILLINGS REFINERY | BILLINGS, Yellowstone, MT | Pass | State |
| 2018-12-10 | BILLINGS REFINERY | BILLINGS, Yellowstone, MT | Pass | State |
| 2018-12-10 | BILLINGS REFINERY | BILLINGS, Yellowstone, MT | Pass | State |
| 2018-12-10 | BILLINGS REFINERY | BILLINGS, Yellowstone, MT | Pass | State |
| 2018-12-10 | BILLINGS REFINERY | BILLINGS, Yellowstone, MT | Pass | State |
| 2018-12-06 | DRY CREEK FIELD STATION 056 | RED LODGE, Carbon, MT | Pass | State |
| 2018-12-06 | DRY CREEK FIELD STATION 056 | RED LODGE, Carbon, MT | Pass | State |
| 2018-12-06 | DRY CREEK FIELD STATION 056 | RED LODGE, Carbon, MT | Pass | State |
| 2018-12-05 | WEYERHAEUSER-EVERGREEN — high-priority violation on file | KALISPELL, Flathead, MT | Pass | State |
| 2018-12-03 | WESTERN SUGAR COOPERATIVE — high-priority violation on file | BILLINGS, Yellowstone, MT | Pass | State |
| 2018-11-29 | COLSTRIP STEAM ELECTRIC STATION | COLSTRIP, Rosebud, MT | Pass | State |
| 2018-11-29 | COLSTRIP STEAM ELECTRIC STATION | COLSTRIP, Rosebud, MT | Pass | State |
| 2018-11-29 | COLSTRIP STEAM ELECTRIC STATION | COLSTRIP, Rosebud, MT | Pass | State |
| 2018-11-29 | COLSTRIP STEAM ELECTRIC STATION | COLSTRIP, Rosebud, MT | Pass | State |
| 2018-11-28 | WESTERN SUGAR COOPERATIVE — high-priority violation on file | BILLINGS, Yellowstone, MT | Pass | State |
| 2018-11-27 | WILLISTON BASIN - FORT PECK STATION | NASHUA, Valley, MT | Pass | State |
| 2018-11-27 | WILLISTON BASIN - FORT PECK STATION | NASHUA, Valley, MT | Pass | State |
| 2018-11-27 | WILLISTON BASIN - SACO | SACO, Phillips, MT | Pass | State |
| 2018-11-27 | WILLISTON BASIN - SACO | SACO, Phillips, MT | Pass | State |
| 2018-11-27 | WILLISTON BASIN - SACO | SACO, Phillips, MT | Pass | State |
| 2018-11-27 | WILLISTON BASIN - SACO | SACO, Phillips, MT | Pass | State |
| 2018-11-26 | ROCKY MOUNTAIN LABORATORIES FACILITY | HAMILTON, Ravalli, MT | Pass | State |
| 2018-11-26 | ROCKY MOUNTAIN LABORATORIES FACILITY | HAMILTON, Ravalli, MT | Pass | State |
| 2018-11-20 | MDU - LEWIS & CLARK STATION | SIDNEY, Richland, MT | Pass | State |
| 2018-11-11 | ROCKY MOUNTAIN POWER | HARDIN, Big Horn, MT | Pass | State |
| 2018-11-05 | ROCKY MOUNTAIN POWER | HARDIN, Big Horn, MT | Pass | State |
| 2018-11-05 | ROCKY MOUNTAIN POWER | HARDIN, Big Horn, MT | Pass | State |
| 2018-11-05 | ROCKY MOUNTAIN POWER | HARDIN, Big Horn, MT | Pass | State |
| 2018-11-05 | YELLOWSTONE POWER PLANT — high-priority violation on file | BILLINGS, Yellowstone, MT | Pass | State |
| 2018-11-05 | YELLOWSTONE POWER PLANT — high-priority violation on file | BILLINGS, Yellowstone, MT | Pass | State |
| 2018-10-31 | BILLINGS REFINERY | BILLINGS, Yellowstone, MT | Pass | State |
| 2018-10-31 | BILLINGS REFINERY | BILLINGS, Yellowstone, MT | Pass | State |
| 2018-10-25 | ASH GROVE CEMENT | CLANCY, Jefferson, MT | Pass | State |
| 2018-10-25 | COLSTRIP STEAM ELECTRIC STATION | COLSTRIP, Rosebud, MT | Pass | State |
| 2018-10-25 | COLSTRIP STEAM ELECTRIC STATION | COLSTRIP, Rosebud, MT | Pass | State |
| 2018-10-25 | COLSTRIP STEAM ELECTRIC STATION | COLSTRIP, Rosebud, MT | Pass | State |
| 2018-10-25 | COLSTRIP STEAM ELECTRIC STATION | COLSTRIP, Rosebud, MT | Pass | State |
| 2018-10-24 | COLSTRIP STEAM ELECTRIC STATION | COLSTRIP, Rosebud, MT | Pass | State |
| 2018-10-24 | COLSTRIP STEAM ELECTRIC STATION | COLSTRIP, Rosebud, MT | Pass | State |
| 2018-10-24 | COLSTRIP STEAM ELECTRIC STATION | COLSTRIP, Rosebud, MT | Pass | State |
| 2018-10-24 | COLSTRIP STEAM ELECTRIC STATION | COLSTRIP, Rosebud, MT | Pass | State |
| 2018-10-24 | COLSTRIP STEAM ELECTRIC STATION | COLSTRIP, Rosebud, MT | Pass | State |
| 2018-10-24 | COLSTRIP STEAM ELECTRIC STATION | COLSTRIP, Rosebud, MT | Pass | State |
| 2018-10-19 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
| 2018-10-19 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
| 2018-10-19 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
| 2018-10-19 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
| 2018-10-18 | WEYERHAEUSER-CFALLS — high-priority violation on file | COLUMBIA FALLS, Flathead, MT | Pass | State |
| 2018-10-18 | WEYERHAEUSER-CFALLS — high-priority violation on file | COLUMBIA FALLS, Flathead, MT | Pass | State |
| 2018-10-17 | WILLISTON BASIN - HATHAWAY STATION | HATHAWAY, Rosebud, MT | Pass | State |
| 2018-10-17 | WBI SANDSTONE CREEK COMPRESSOR STATION | BAKER, Fallon, MT | Pass | State |
| 2018-10-17 | WBI SANDSTONE CREEK COMPRESSOR STATION | BAKER, Fallon, MT | Pass | State |
| 2018-10-17 | WBI SANDSTONE CREEK COMPRESSOR STATION | BAKER, Fallon, MT | Pass | State |
| 2018-10-17 | WBI SANDSTONE CREEK COMPRESSOR STATION | BAKER, Fallon, MT | Pass | State |
| 2018-10-17 | WILLISTON BASIN - VIDA STATION | VIDA, McCone, MT | Pass | State |
| 2018-10-17 | WILLISTON BASIN - VIDA STATION | VIDA, McCone, MT | Pass | State |
| 2018-10-03 | N. BORDER PIPELINE CO STA. 3 | CULBERTSON, Roosevelt, MT | Pass | State |
| 2018-09-21 | BILLINGS REFINERY | BILLINGS, Yellowstone, MT | Fail | State |
| 2018-09-21 | BILLINGS REFINERY | BILLINGS, Yellowstone, MT | Fail | State |
| 2018-09-21 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
| 2018-09-21 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
| 2018-09-14 | PAR MONTANA BILLINGS REFINERY | BILLINGS, Yellowstone, MT | Pass | State |
| 2018-09-10 | DAVE GATES GENERATING STATION AT MILL CREEK | ANACONDA, Deer Lodge, MT | Pass | State |
| 2018-09-10 | YELLOWSTONE POWER PLANT — high-priority violation on file | BILLINGS, Yellowstone, MT | Pass | State |
| 2018-09-07 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
| 2018-09-07 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
| 2018-09-07 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
| 2018-09-06 | ROCKY MOUNTAIN POWER | HARDIN, Big Horn, MT | Pass | State |
| 2018-08-27 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
| 2018-08-24 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
| 2018-08-24 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
| 2018-08-24 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
| 2018-08-24 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
| 2018-08-24 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
| 2018-08-24 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
| 2018-08-24 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
| 2018-08-24 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
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Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.