EPA Air · stack tests by state and year

Air-emissions stack tests in Montana, 2019

272Stack 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 2019; one facility can appear more than once, because this is a record of what happened rather than a list of places.

Counties in Montana, 2019

Montana, other years

Air-emissions stack tests recorded in Montana, 2019

Date	Facility	Where	Kind	Agency
2019-12-30	WILLISTON BASIN - MONARCH STATION	BAKER, Fallon, MT	Pass	State
2019-12-30	WILLISTON BASIN - MONARCH STATION	BAKER, Fallon, MT	Pass	State
2019-12-19	COLSTRIP ENERGY LTD PARTNERSHIP	COLSTRIP, Rosebud, MT	Pass	State
2019-12-17	WILLISTON BASIN - CABIN CREEK	BAKER, Fallon, MT	Pass	State
2019-12-17	WBI SANDSTONE CREEK COMPRESSOR STATION	BAKER, Fallon, MT	Pass	State
2019-12-17	WBI SANDSTONE CREEK COMPRESSOR STATION	BAKER, Fallon, MT	Pass	State
2019-12-16	BILLINGS REFINERY	BILLINGS, Yellowstone, MT	Pass	State
2019-12-16	BILLINGS REFINERY	BILLINGS, Yellowstone, MT	Pass	State
2019-12-16	BILLINGS REFINERY	BILLINGS, Yellowstone, MT	Pass	State
2019-12-16	BILLINGS REFINERY	BILLINGS, Yellowstone, MT	Pass	State
2019-12-16	BILLINGS REFINERY	BILLINGS, Yellowstone, MT	Pass	State
2019-12-16	BILLINGS REFINERY	BILLINGS, Yellowstone, MT	Pass	State
2019-12-16	BILLINGS REFINERY	BILLINGS, Yellowstone, MT	Pass	State
2019-12-16	BILLINGS REFINERY	BILLINGS, Yellowstone, MT	Pass	State
2019-12-16	BILLINGS REFINERY	BILLINGS, Yellowstone, MT	Pass	State
2019-12-16	BILLINGS REFINERY	BILLINGS, Yellowstone, MT	Pass	State
2019-12-16	BILLINGS REFINERY	BILLINGS, Yellowstone, MT	Pass	State
2019-12-16	BILLINGS REFINERY	BILLINGS, Yellowstone, MT	Pass	State
2019-12-16	BILLINGS REFINERY	BILLINGS, Yellowstone, MT	Pass	State
2019-12-12	WILLISTON BASIN - FORT PECK STATION	NASHUA, Valley, MT	Pass	State
2019-12-12	WILLISTON BASIN - FORT PECK STATION	NASHUA, Valley, MT	Pass	State
2019-12-12	WILLISTON BASIN - FORT PECK STATION	NASHUA, Valley, MT	Pass	State
2019-12-06	DAVE GATES GENERATING STATION AT MILL CREEK	ANACONDA, Deer Lodge, MT	Pass	State
2019-12-06	DAVE GATES GENERATING STATION AT MILL CREEK	ANACONDA, Deer Lodge, MT	Pass	State
2019-12-06	DAVE GATES GENERATING STATION AT MILL CREEK	ANACONDA, Deer Lodge, MT	Pass	State
2019-12-06	DAVE GATES GENERATING STATION AT MILL CREEK	ANACONDA, Deer Lodge, MT	Pass	State
2019-12-06	DAVE GATES GENERATING STATION AT MILL CREEK	ANACONDA, Deer Lodge, MT	Pass	State
2019-12-06	DAVE GATES GENERATING STATION AT MILL CREEK	ANACONDA, Deer Lodge, MT	Pass	State
2019-12-03	PAR MONTANA BILLINGS REFINERY	BILLINGS, Yellowstone, MT	Pass	State
2019-12-02	COLSTRIP STEAM ELECTRIC STATION	COLSTRIP, Rosebud, MT	Pass	State
2019-12-02	COLSTRIP STEAM ELECTRIC STATION	COLSTRIP, Rosebud, MT	Pass	State
2019-12-02	COLSTRIP STEAM ELECTRIC STATION	COLSTRIP, Rosebud, MT	Pass	State
2019-12-02	COLSTRIP STEAM ELECTRIC STATION	COLSTRIP, Rosebud, MT	Pass	State
2019-12-02	BILLINGS REFINERY	BILLINGS, Yellowstone, MT	Pass	State
2019-11-15	WILLISTON BASIN - SACO	SACO, Phillips, MT	Pass	State
2019-11-15	WILLISTON BASIN - SACO	SACO, Phillips, MT	Pass	State
2019-11-15	WILLISTON BASIN - SACO	SACO, Phillips, MT	Pass	State
2019-11-15	WILLISTON BASIN - SACO	SACO, Phillips, MT	Pass	State
2019-11-15	WILLISTON BASIN - SACO	SACO, Phillips, MT	Pass	State
2019-11-08	ROCKY MOUNTAIN POWER	HARDIN, Big Horn, MT	Pass	State
2019-11-08	COLSTRIP STEAM ELECTRIC STATION	COLSTRIP, Rosebud, MT	Pass	State
2019-11-08	COLSTRIP STEAM ELECTRIC STATION	COLSTRIP, Rosebud, MT	Pass	State
2019-11-08	COLSTRIP STEAM ELECTRIC STATION	COLSTRIP, Rosebud, MT	Pass	State
2019-11-08	COLSTRIP STEAM ELECTRIC STATION	COLSTRIP, Rosebud, MT	Pass	State
2019-11-05	MDU - GLENDIVE	GLENDIVE, Dawson, MT	Pass	State
2019-11-04	CHS INC REFINERY LAUREL	LAUREL, Yellowstone, MT	Pass	State
2019-11-04	CHS INC REFINERY LAUREL	LAUREL, Yellowstone, MT	Pass	State
2019-11-01	MDU - LEWIS & CLARK STATION	SIDNEY, Richland, MT	Pass	State
2019-10-31	QUALA SERVICES	MILES CITY, Custer, MT	Pass	State
2019-10-22	WEYERHAEUSER-EVERGREEN — high-priority violation on file	KALISPELL, Flathead, MT	Pass	State
2019-10-22	WEYERHAEUSER-EVERGREEN — high-priority violation on file	KALISPELL, Flathead, MT	Pass	State
2019-10-22	WEYERHAEUSER-CFALLS — high-priority violation on file	COLUMBIA FALLS, Flathead, MT	Pass	State
2019-10-16	BILLINGS REFINERY	BILLINGS, Yellowstone, MT	Fail	State
2019-10-14	WESTERN SUGAR COOPERATIVE — high-priority violation on file	BILLINGS, Yellowstone, MT	Pass	State
2019-10-11	WILLISTON BASIN - HATHAWAY STATION	HATHAWAY, Rosebud, MT	Pass	State
2019-10-11	WILLISTON BASIN - BAKER COMPRESSOR STA	BAKER, Fallon, MT	Pass	State
2019-10-11	WBI SANDSTONE CREEK COMPRESSOR STATION	BAKER, Fallon, MT	Pass	State
2019-10-10	TRIDENT	THREE FORKS, Gallatin, MT	Pass	State
2019-10-09	YELLOWSTONE POWER PLANT — high-priority violation on file	BILLINGS, Yellowstone, MT	Pass	State
2019-10-08	PAR MONTANA BILLINGS REFINERY	BILLINGS, Yellowstone, MT	Pass	State
2019-10-01	ROCKY MOUNTAIN LABORATORIES FACILITY	HAMILTON, Ravalli, MT	Pass	State
2019-09-30	CHS INC REFINERY LAUREL	LAUREL, Yellowstone, MT	Pass	State
2019-09-30	CHS INC REFINERY LAUREL	LAUREL, Yellowstone, MT	Pass	State
2019-09-30	CHS INC REFINERY LAUREL	LAUREL, Yellowstone, MT	Pass	State
2019-09-25	CHS INC REFINERY LAUREL	LAUREL, Yellowstone, MT	Pass	State
2019-09-25	CHS INC REFINERY LAUREL	LAUREL, Yellowstone, MT	Pass	State
2019-09-12	CHARLIE CREEK COMPRESSOR STATION	LAMBERT, Richland, MT	Pass	State
2019-09-12	CHARLIE CREEK COMPRESSOR STATION	LAMBERT, Richland, MT	Pass	State
2019-09-12	CHARLIE CREEK COMPRESSOR STATION	LAMBERT, Richland, MT	Pass	State
2019-09-09	MT WASTE SYSTEMS - HIGH PLAINS LANDFILL	GREAT FALLS, Cascade, MT	Pass	State
2019-09-08	COLSTRIP STEAM ELECTRIC STATION	COLSTRIP, Rosebud, MT	Pass	State
2019-09-06	COLSTRIP STEAM ELECTRIC STATION	COLSTRIP, Rosebud, MT	Pass	State
2019-09-06	COLSTRIP STEAM ELECTRIC STATION	COLSTRIP, Rosebud, MT	Pass	State
2019-09-06	COLSTRIP STEAM ELECTRIC STATION	COLSTRIP, Rosebud, MT	Pass	State
2019-09-06	COLSTRIP STEAM ELECTRIC STATION	COLSTRIP, Rosebud, MT	Pass	State
2019-09-06	COLSTRIP STEAM ELECTRIC STATION	COLSTRIP, Rosebud, MT	Pass	State
2019-09-06	COLSTRIP STEAM ELECTRIC STATION	COLSTRIP, Rosebud, MT	Pass	State
2019-09-06	COLSTRIP STEAM ELECTRIC STATION	COLSTRIP, Rosebud, MT	Pass	State
2019-09-06	YELLOWSTONE POWER PLANT — high-priority violation on file	BILLINGS, Yellowstone, MT	Pass	State
2019-09-06	YELLOWSTONE POWER PLANT — high-priority violation on file	BILLINGS, Yellowstone, MT	Pass	State
2019-08-26	TRIDENT	THREE FORKS, Gallatin, MT	Pass	State
2019-08-26	TRIDENT	THREE FORKS, Gallatin, MT	Pass	State
2019-08-26	TRIDENT	THREE FORKS, Gallatin, MT	Pass	State
2019-08-26	TRIDENT	THREE FORKS, Gallatin, MT	Pass	State
2019-08-21	NORTHERN BORDER PIPELINE CO STA 1	GLASGOW, Valley, MT	Pass	State
2019-08-19	MDU - LEWIS & CLARK STATION	SIDNEY, Richland, MT	Pass	State
2019-08-19	MDU - LEWIS & CLARK STATION	SIDNEY, Richland, MT	Pass	State
2019-08-14	CALUMET MONTANA REFINING — high-priority violation on file	GREAT FALLS, Cascade, MT	Pass	State
2019-08-14	CALUMET MONTANA REFINING — high-priority violation on file	GREAT FALLS, Cascade, MT	Pass	State
2019-08-14	CALUMET MONTANA REFINING — high-priority violation on file	GREAT FALLS, Cascade, MT	Pass	State
2019-08-14	CALUMET MONTANA REFINING — high-priority violation on file	GREAT FALLS, Cascade, MT	Pass	State
2019-08-14	CALUMET MONTANA REFINING — high-priority violation on file	GREAT FALLS, Cascade, MT	Pass	State
2019-08-14	CALUMET MONTANA REFINING — high-priority violation on file	GREAT FALLS, Cascade, MT	Pass	State
2019-08-14	CALUMET MONTANA REFINING — high-priority violation on file	GREAT FALLS, Cascade, MT	Pass	State
2019-08-14	CALUMET MONTANA REFINING — high-priority violation on file	GREAT FALLS, Cascade, MT	Pass	State
2019-08-14	CALUMET MONTANA REFINING — high-priority violation on file	GREAT FALLS, Cascade, MT	Pass	State
2019-08-14	CALUMET MONTANA REFINING — high-priority violation on file	GREAT FALLS, Cascade, MT	Pass	State
2019-08-08	CHS INC REFINERY LAUREL	LAUREL, Yellowstone, MT	Pass	State
2019-08-02	CALUMET MONTANA REFINING — high-priority violation on file	GREAT FALLS, Cascade, MT	Pass	State
2019-08-01	COLSTRIP STEAM ELECTRIC STATION	COLSTRIP, Rosebud, MT	Pass	State

Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.