EPA Air · stack tests by state and year

Air-emissions stack tests in Wyoming, 2026

755Stack 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 Wyoming during 2026; one facility can appear more than once, because this is a record of what happened rather than a list of places.

Counties in Wyoming, 2026

Wyoming, other years

Air-emissions stack tests recorded in Wyoming, 2026

Date	Facility	Where	Kind	Agency
2026-08-19	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-19	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-19	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-19	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-18	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-18	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-18	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-18	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-17	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-17	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-17	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-17	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-17	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-17	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-17	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-17	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-10	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-10	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-10	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-10	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-10	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-10	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-10	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-10	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-04	MARY'S DRAW (THUNDER CREEK GAS SERVICES)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-04	MARY'S DRAW (THUNDER CREEK GAS SERVICES)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-04	MARY'S DRAW (THUNDER CREEK GAS SERVICES)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-04	MARY'S DRAW (THUNDER CREEK GAS SERVICES)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-04	MARY'S DRAW (THUNDER CREEK GAS SERVICES)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-04	MARY'S DRAW (THUNDER CREEK GAS SERVICES)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-04	MARY'S DRAW (THUNDER CREEK GAS SERVICES)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-04	MARY'S DRAW (THUNDER CREEK GAS SERVICES)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-03	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-03	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-03	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-08-03	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-30	CKN-ROCK SPRINGS STATION (MOUNTAIN WEST PIPELINE, LLC)	SWEETWATER COUNTY, Sweetwater, WY	Pass	State
2026-07-30	CKN-ROCK SPRINGS STATION (MOUNTAIN WEST PIPELINE, LLC)	SWEETWATER COUNTY, Sweetwater, WY	Pass	State
2026-07-29	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-29	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-29	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-29	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-29	CKN-ROCK SPRINGS STATION (MOUNTAIN WEST PIPELINE, LLC)	SWEETWATER COUNTY, Sweetwater, WY	Pass	State
2026-07-29	CKN-ROCK SPRINGS STATION (MOUNTAIN WEST PIPELINE, LLC)	SWEETWATER COUNTY, Sweetwater, WY	Pass	State
2026-07-23	MARY'S DRAW (THUNDER CREEK GAS SERVICES)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-23	MARY'S DRAW (THUNDER CREEK GAS SERVICES)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-23	MARY'S DRAW (THUNDER CREEK GAS SERVICES)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-23	MARY'S DRAW (THUNDER CREEK GAS SERVICES)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-22	HATCHET COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-22	HATCHET COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-22	HATCHET COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-22	BAGGS MAINLINE/BLUE GAP COMPRESSOR STATION (CROWHEART ENERGY, LLC)	CARBON COUNTY, Carbon, WY	Pass	State
2026-07-22	BAGGS MAINLINE/BLUE GAP COMPRESSOR STATION (CROWHEART ENERGY, LLC)	CARBON COUNTY, Carbon, WY	Pass	State
2026-07-22	BAGGS MAINLINE/BLUE GAP COMPRESSOR STATION (CROWHEART ENERGY, LLC)	CARBON COUNTY, Carbon, WY	Pass	State
2026-07-22	BAGGS MAINLINE/BLUE GAP COMPRESSOR STATION (CROWHEART ENERGY, LLC)	CARBON COUNTY, Carbon, WY	Pass	State
2026-07-21	OPAL GAS PLANT (WILLIAMS FIELD SERVICES)	OPAL, Lincoln, WY	Pass	State
2026-07-21	OPAL GAS PLANT (WILLIAMS FIELD SERVICES)	OPAL, Lincoln, WY	Pass	State
2026-07-21	OPAL GAS PLANT (WILLIAMS FIELD SERVICES)	OPAL, Lincoln, WY	Pass	State
2026-07-16	HATCHET COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-16	HATCHET COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-16	HATCHET COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-16	BLACKS FORK GAS PLANT (HARVEST MIDSTREAM COMPANY)	GRANGER, Sweetwater, WY	Pass	State
2026-07-16	BLACKS FORK GAS PLANT (HARVEST MIDSTREAM COMPANY)	GRANGER, Sweetwater, WY	Pass	State
2026-07-16	BLACKS FORK GAS PLANT (HARVEST MIDSTREAM COMPANY)	GRANGER, Sweetwater, WY	Pass	State
2026-07-09	CKN-ROCK SPRINGS STATION (MOUNTAIN WEST PIPELINE, LLC)	SWEETWATER COUNTY, Sweetwater, WY	Pass	State
2026-07-09	CKN-ROCK SPRINGS STATION (MOUNTAIN WEST PIPELINE, LLC)	SWEETWATER COUNTY, Sweetwater, WY	Pass	State
2026-07-08	GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC)	SWEETWATER COUNTY, Sweetwater, WY	Pass	State
2026-07-07	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-07	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-07	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-07	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-07	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-07	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-07	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-07	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-07	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-07	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-07	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-07	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-07	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-07	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-07	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-07	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-07	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-07	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-07	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-07	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-07	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-07	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-07	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-07	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2026-07-07	MUDDY CREEK STATION (KERN RIVER GAS TRANS)	LINCOLN COUNTY, Lincoln, WY	Pass	State
2026-07-07	MUDDY CREEK STATION (KERN RIVER GAS TRANS)	LINCOLN COUNTY, Lincoln, WY	Pass	State
2026-07-07	GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC)	SWEETWATER COUNTY, Sweetwater, WY	Pass	State
2026-07-07	GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC)	SWEETWATER COUNTY, Sweetwater, WY	Pass	State
2026-07-07	GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC)	SWEETWATER COUNTY, Sweetwater, WY	Pass	State
2026-07-07	GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC)	SWEETWATER COUNTY, Sweetwater, WY	Pass	State
2026-07-07	GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC)	SWEETWATER COUNTY, Sweetwater, WY	Pass	State
2026-07-07	GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC)	SWEETWATER COUNTY, Sweetwater, WY	Pass	State
2026-07-07	GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC)	SWEETWATER COUNTY, Sweetwater, WY	Pass	State

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

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