EPA Air · stack tests by state and year

Air-emissions stack tests in Wyoming, 2023

670Stack 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 2023; one facility can appear more than once, because this is a record of what happened rather than a list of places.

Counties in Wyoming, 2023

Wyoming, other years

Air-emissions stack tests recorded in Wyoming, 2023

Date	Facility	Where	Kind	Agency
2023-12-28	GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC)	SWEETWATER COUNTY, Sweetwater, WY	Pass	State
2023-12-28	GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC)	SWEETWATER COUNTY, Sweetwater, WY	Pass	State
2023-12-28	GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC)	SWEETWATER COUNTY, Sweetwater, WY	Pass	State
2023-12-28	GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC)	SWEETWATER COUNTY, Sweetwater, WY	Pass	State
2023-12-21	HANSEN LAKE COMPRESSOR STATION (WILLIAMS FIELD SERVICES CO.)	SWEETWATER COUNTY, Sweetwater, WY	Pass	State
2023-12-21	HANSEN LAKE COMPRESSOR STATION (WILLIAMS FIELD SERVICES CO.)	SWEETWATER COUNTY, Sweetwater, WY	Pass	State
2023-12-21	HANSEN LAKE COMPRESSOR STATION (WILLIAMS FIELD SERVICES CO.)	SWEETWATER COUNTY, Sweetwater, WY	Pass	State
2023-12-21	HANSEN LAKE COMPRESSOR STATION (WILLIAMS FIELD SERVICES CO.)	SWEETWATER COUNTY, Sweetwater, WY	Pass	State
2023-12-20	LOVELL PLANT (GEORGIA-PACIFIC GYPSUM)	LOVELL, Big Horn, WY	Pass	State
2023-12-19	GREEN RIVER WORKS (TATA CHEMICALS (SODA ASH) PARTNERS)	SWEETWATER COUNTY, Sweetwater, WY	Pass	State
2023-12-18	AUGUSTA-PEBBLE BEACH COMPRESSOR STATION (PRONGHORN MIDSTREAM LLC)	JOHNSON COUNTY, Johnson, WY	Pass	State
2023-12-18	AUGUSTA-PEBBLE BEACH COMPRESSOR STATION (PRONGHORN MIDSTREAM LLC)	JOHNSON COUNTY, Johnson, WY	Pass	State
2023-12-18	AUGUSTA-PEBBLE BEACH COMPRESSOR STATION (PRONGHORN MIDSTREAM LLC)	JOHNSON COUNTY, Johnson, WY	Pass	State
2023-12-14	LARAMIE RIVER STATION (BASIN ELECTRIC POWER COOPERATIVE) — high-priority violation on file	WHEATLAND, Platte, WY	Pass	State
2023-12-14	LARAMIE RIVER STATION (BASIN ELECTRIC POWER COOPERATIVE) — high-priority violation on file	WHEATLAND, Platte, WY	Pass	State
2023-12-13	STEAMBOAT PROCESSING FACILITY (THUNDER CREEK GAS SERVICES)	CONVERSE COUNTY, Converse, WY	Pass	State
2023-12-13	STEAMBOAT PROCESSING FACILITY (THUNDER CREEK GAS SERVICES)	CONVERSE COUNTY, Converse, WY	Pass	State
2023-12-13	STEAMBOAT PROCESSING FACILITY (THUNDER CREEK GAS SERVICES)	CONVERSE COUNTY, Converse, WY	Pass	State
2023-12-13	STEAMBOAT PROCESSING FACILITY (THUNDER CREEK GAS SERVICES)	CONVERSE COUNTY, Converse, WY	Pass	State
2023-12-13	STEAMBOAT PROCESSING FACILITY (THUNDER CREEK GAS SERVICES)	CONVERSE COUNTY, Converse, WY	Pass	State
2023-12-13	STEAMBOAT PROCESSING FACILITY (THUNDER CREEK GAS SERVICES)	CONVERSE COUNTY, Converse, WY	Pass	State
2023-12-13	STEAMBOAT PROCESSING FACILITY (THUNDER CREEK GAS SERVICES)	CONVERSE COUNTY, Converse, WY	Pass	State
2023-12-13	STEAMBOAT PROCESSING FACILITY (THUNDER CREEK GAS SERVICES)	CONVERSE COUNTY, Converse, WY	Pass	State
2023-12-13	STEAMBOAT PROCESSING FACILITY (THUNDER CREEK GAS SERVICES)	CONVERSE COUNTY, Converse, WY	Pass	State
2023-12-13	STEAMBOAT PROCESSING FACILITY (THUNDER CREEK GAS SERVICES)	CONVERSE COUNTY, Converse, WY	Pass	State
2023-12-13	STEAMBOAT PROCESSING FACILITY (THUNDER CREEK GAS SERVICES)	CONVERSE COUNTY, Converse, WY	Pass	State
2023-12-13	STEAMBOAT PROCESSING FACILITY (THUNDER CREEK GAS SERVICES)	CONVERSE COUNTY, Converse, WY	Pass	State
2023-12-13	STEAMBOAT PROCESSING FACILITY (THUNDER CREEK GAS SERVICES)	CONVERSE COUNTY, Converse, WY	Pass	State
2023-12-13	STEAMBOAT PROCESSING FACILITY (THUNDER CREEK GAS SERVICES)	CONVERSE COUNTY, Converse, WY	Pass	State
2023-12-13	STEAMBOAT PROCESSING FACILITY (THUNDER CREEK GAS SERVICES)	CONVERSE COUNTY, Converse, WY	Pass	State
2023-12-13	STEAMBOAT PROCESSING FACILITY (THUNDER CREEK GAS SERVICES)	CONVERSE COUNTY, Converse, WY	Pass	State
2023-12-13	BIG ISLAND MINE & REFINERY (SISECAM WYOMING LLC) — high-priority violation on file	SWEETWATER COUNTY, Sweetwater, WY	Pass	State
2023-12-13	BIG ISLAND MINE & REFINERY (SISECAM WYOMING LLC) — high-priority violation on file	SWEETWATER COUNTY, Sweetwater, WY	Pass	State
2023-12-13	BIG ISLAND MINE & REFINERY (SISECAM WYOMING LLC) — high-priority violation on file	SWEETWATER COUNTY, Sweetwater, WY	Pass	State
2023-12-13	BIG ISLAND MINE & REFINERY (SISECAM WYOMING LLC) — high-priority violation on file	SWEETWATER COUNTY, Sweetwater, WY	Pass	State
2023-12-12	FONTENELLE STATION (MOUNTAIN GAS RESOURCES LLC)	SWEETWATER COUNTY, Sweetwater, WY	Pass	State
2023-12-12	FONTENELLE STATION (MOUNTAIN GAS RESOURCES LLC)	SWEETWATER COUNTY, Sweetwater, WY	Pass	State
2023-12-12	FONTENELLE STATION (MOUNTAIN GAS RESOURCES LLC)	SWEETWATER COUNTY, Sweetwater, WY	Pass	State
2023-12-05	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-12-05	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-12-05	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-12-05	LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-12-05	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-12-05	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-12-05	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-12-05	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-12-05	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-12-05	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-12-05	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-12-05	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-12-05	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-12-05	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-12-05	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-12-05	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-12-05	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-12-05	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-12-05	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-12-05	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-12-05	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-12-05	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-12-05	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-12-05	BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-12-05	MUDDY CREEK STATION (KERN RIVER GAS TRANS)	LINCOLN COUNTY, Lincoln, WY	Pass	State
2023-12-05	MUDDY CREEK STATION (KERN RIVER GAS TRANS)	LINCOLN COUNTY, Lincoln, WY	Pass	State
2023-12-04	MUDDY CREEK STATION (KERN RIVER GAS TRANS)	LINCOLN COUNTY, Lincoln, WY	Pass	State
2023-12-04	MUDDY CREEK STATION (KERN RIVER GAS TRANS)	LINCOLN COUNTY, Lincoln, WY	Pass	State
2023-12-04	CASPER REFINERY (HF SINCLAIR CASPER REFINING LLC) — high-priority violation on file	EVANSVILLE, Natrona, WY	Pass	State
2023-11-30	PINEDALE COMPLEX (HARVEST MIDSTREAM COMPANY)	SUBLETTE COUNTY, Sublette, WY	Pass	State
2023-11-30	PINEDALE COMPLEX (HARVEST MIDSTREAM COMPANY)	SUBLETTE COUNTY, Sublette, WY	Pass	State
2023-11-30	PINEDALE COMPLEX (HARVEST MIDSTREAM COMPANY)	SUBLETTE COUNTY, Sublette, WY	Pass	State
2023-11-30	PINEDALE COMPLEX (HARVEST MIDSTREAM COMPANY)	SUBLETTE COUNTY, Sublette, WY	Pass	State
2023-11-30	PINEDALE COMPLEX (HARVEST MIDSTREAM COMPANY)	SUBLETTE COUNTY, Sublette, WY	Pass	State
2023-11-30	PINEDALE COMPLEX (HARVEST MIDSTREAM COMPANY)	SUBLETTE COUNTY, Sublette, WY	Pass	State
2023-11-30	PINEDALE COMPLEX (HARVEST MIDSTREAM COMPANY)	SUBLETTE COUNTY, Sublette, WY	Pass	State
2023-11-30	PINEDALE COMPLEX (HARVEST MIDSTREAM COMPANY)	SUBLETTE COUNTY, Sublette, WY	Pass	State
2023-11-30	PINEDALE COMPLEX (HARVEST MIDSTREAM COMPANY)	SUBLETTE COUNTY, Sublette, WY	Pass	State
2023-11-30	PINEDALE COMPLEX (HARVEST MIDSTREAM COMPANY)	SUBLETTE COUNTY, Sublette, WY	Pass	State
2023-11-30	PINEDALE COMPLEX (HARVEST MIDSTREAM COMPANY)	SUBLETTE COUNTY, Sublette, WY	Pass	State
2023-11-30	PINEDALE COMPLEX (HARVEST MIDSTREAM COMPANY)	SUBLETTE COUNTY, Sublette, WY	Pass	State
2023-11-30	PINEDALE COMPLEX (HARVEST MIDSTREAM COMPANY)	SUBLETTE COUNTY, Sublette, WY	Pass	State
2023-11-30	PINEDALE COMPLEX (HARVEST MIDSTREAM COMPANY)	SUBLETTE COUNTY, Sublette, WY	Pass	State
2023-11-30	PINEDALE COMPLEX (HARVEST MIDSTREAM COMPANY)	SUBLETTE COUNTY, Sublette, WY	Pass	State
2023-11-30	PINEDALE COMPLEX (HARVEST MIDSTREAM COMPANY)	SUBLETTE COUNTY, Sublette, WY	Pass	State
2023-11-28	ECHO SPRINGS GAS PLANT (WILLIAMS FIELD SERVICES)	CARBON COUNTY, Carbon, WY	Pass	State
2023-11-28	ECHO SPRINGS GAS PLANT (WILLIAMS FIELD SERVICES)	CARBON COUNTY, Carbon, WY	Pass	State
2023-11-28	ECHO SPRINGS GAS PLANT (WILLIAMS FIELD SERVICES)	CARBON COUNTY, Carbon, WY	Pass	State
2023-11-22	COLONY PLANT (BENTONITE PERFORMANCE MINERALS)	COLONY, Crook, WY	Pass	State
2023-11-21	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-11-21	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-11-21	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-11-21	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-11-20	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-11-20	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-11-20	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-11-20	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-11-20	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-11-20	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-11-20	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-11-20	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	CAMPBELL COUNTY, Campbell, WY	Pass	State
2023-11-20	CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC)	CAMPBELL COUNTY, Campbell, 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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