EPA Air · stack tests by state and year

Air-emissions stack tests in Colorado, 2021

407Stack 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 Colorado 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 Colorado, 2021

Colorado, other years

Air-emissions stack tests recorded in Colorado, 2021

Date	Facility	Where	Kind	Agency
2021-12-28	UTAH GAS - DRAGON TRAIL — high-priority violation on file	RANGELY 16.7 MI. S OF, Rio Blanco, CO	Pass	State
2021-12-28	EXPEDITION WATER SOLUTIONS - EWS #13	KERSEY AREA, Weld, CO	Fail	State
2021-12-23	PUBLIC SERVICE CO - HAYDEN PLT	HAYDEN, Routt, CO	Pass	State
2021-12-14	MID-AMERICA PIPELINE CO DOVE CR STA	DOVE CREEK 5.3 MI. NW OF, Dolores, CO	Pass	State
2021-12-10	WES WATTENBURG - CENTRAL OIL STABIL	HUDSON 6.1 MI. N OF, Weld, CO	Pass	State
2021-12-09	SUNCOR ENERGY - DENVER REFINERY — high-priority violation on file	COMMERCE CITY, Adams, CO	Pass	State
2021-12-09	MORGAN COUNTY - MORGAN CO LANDFILL	FORT MORGAN 3.7 MI. NE OF, Morgan, CO	Pass	State
2021-12-09	BONANZA CREEK - ANTELOPE CPF 13-21	KERSEY 10.4 MI. E OF, Weld, CO	Pass	State
2021-12-08	SUNCOR ENERGY - DENVER REFINERY — high-priority violation on file	COMMERCE CITY, Adams, CO	Pass	State
2021-12-08	ROCKY MOUNTAIN NAT GAS - PICEANCE	MEEKER 17.4 MI. W OF, Rio Blanco, CO	N/A	State
2021-12-08	ROCKY MOUNTAIN NAT GAS - PICEANCE	MEEKER 17.4 MI. W OF, Rio Blanco, CO	N/A	State
2021-12-08	ROCKY MOUNTAIN NAT GAS - PICEANCE	MEEKER 17.4 MI. W OF, Rio Blanco, CO	Pass	State
2021-12-08	ROCKY MOUNTAIN NAT GAS - PICEANCE	MEEKER 17.4 MI. W OF, Rio Blanco, CO	Pass	State
2021-12-07	PLATTE RIVER POWER AUTHORITY - RAWHIDE	WELLINGTON 9.3 MI. N OF, Larimer, CO	Pass	State
2021-12-07	DCP OPERATING CO - TROUDT C.S.	GREELEY, Weld, CO	Pass	State
2021-12-06	ROCKY MTN NAT GAS - CRYSTAL RIVER CS	CARBONDALE 2.5 MI. W OF, Garfield, CO	Pass	State
2021-12-06	ROCKY MTN NAT GAS - CRYSTAL RIVER CS	CARBONDALE 2.5 MI. W OF, Garfield, CO	Pass	State
2021-12-06	ROCKY MTN NAT GAS - CRYSTAL RIVER CS	CARBONDALE 2.5 MI. W OF, Garfield, CO	Pass	State
2021-12-01	FULCRUM ENERGY - BIGHORN-MUTUAL 0780 S17	WALDEN 11.6 MI. N OF, Jackson, CO	Pass	State
2021-12-01	FULCRUM ENERGY - BIGHORN-MUTUAL 0780 S17	WALDEN 11.6 MI. N OF, Jackson, CO	Pass	State
2021-11-30	FULCRUM ENERGY - MUTUAL 0780 S17 PAD	WALDEN 11.7 MI. SW OF, Jackson, CO	Fail	State
2021-11-19	DCP OPERATING CO - LIBSACK C.S.	GREELEY AREA, Weld, CO	Pass	State
2021-11-19	BIOCHAR NOW, LLC - BERTHOUD PLANT	BERTHOUD, Weld, CO	Pass	State
2021-11-17	PHILLIPS 66 PIPELINE - LA JUNTA TERMINAL	LA JUNTA AREA, Otero, CO	Pass	State
2021-11-17	HARVEST FOUR CORNERS, LLC - IGNACIO GAS PLANT	DURANGO, La Plata, CO	Pass	State
2021-11-16	BONANZA CREEK - WETCO FARMS A-4 PAD	KERSEY 4.8 MI. N OF, Weld, CO	Pass	State
2021-11-16	BONANZA CREEK - WETCO FARMS A-4 PAD	KERSEY 4.8 MI. N OF, Weld, CO	Pass	State
2021-11-16	BONANZA CREEK - WETCO FARMS A-4 PAD	KERSEY 4.8 MI. N OF, Weld, CO	Pass	State
2021-11-09	HIGHPOINT - DUTCH LAKE 3-3H PAD	KERSEY 14.7 MI. NE OF, Weld, CO	Pass	State
2021-11-05	LARAMIE ENERGY - CONN CREEK GAS — high-priority violation on file	PARACHUTE 10.1 MI. W OF, Garfield, CO	Pass	State
2021-11-04	LARAMIE ENERGY - CONN CREEK GAS — high-priority violation on file	PARACHUTE 10.1 MI. W OF, Garfield, CO	Pass	State
2021-11-04	LARAMIE ENERGY - CONN CREEK GAS — high-priority violation on file	PARACHUTE 10.1 MI. W OF, Garfield, CO	N/A	State
2021-11-03	LARAMIE ENERGY - CONN CREEK GAS — high-priority violation on file	PARACHUTE 10.1 MI. W OF, Garfield, CO	Pass	State
2021-11-03	LARAMIE ENERGY - CONN CREEK GAS — high-priority violation on file	PARACHUTE 10.1 MI. W OF, Garfield, CO	Pass	State
2021-11-03	SOUTHERN STAR CENTRAL GAS PIPELINE CHEYE	NUNN 18.4 MI. N OF, Weld, CO	N/A	State
2021-11-03	SOUTHERN STAR CENTRAL GAS PIPELINE CHEYE	NUNN 18.4 MI. N OF, Weld, CO	Pass	State
2021-11-03	BONANZA CREEK ENERGY- NORTH PLATTE 14-36	KERSEY, Weld, CO	N/A	State
2021-11-03	BONANZA CREEK ENERGY- NORTH PLATTE 14-36	KERSEY, Weld, CO	Pass	State
2021-11-02	LARAMIE ENERGY - CONN CREEK GAS — high-priority violation on file	PARACHUTE 10.1 MI. W OF, Garfield, CO	Pass	State
2021-11-02	LARAMIE ENERGY - CONN CREEK GAS — high-priority violation on file	PARACHUTE 10.1 MI. W OF, Garfield, CO	N/A	State
2021-11-02	SOUTHERN STAR CENTRAL GAS PIPELINE -YUMA	YUMA 5.9 MI. N OF, Yuma, CO	N/A	State
2021-11-02	SOUTHERN STAR CENTRAL GAS PIPELINE -YUMA	YUMA 5.9 MI. N OF, Yuma, CO	Pass	State
2021-11-01	SUNCOR ENERGY - DENVER REFINERY — high-priority violation on file	COMMERCE CITY, Adams, CO	Pass	State
2021-11-01	SUNCOR ENERGY - DENVER REFINERY — high-priority violation on file	COMMERCE CITY, Adams, CO	Pass	State
2021-10-31	SUNCOR ENERGY - DENVER REFINERY — high-priority violation on file	COMMERCE CITY, Adams, CO	Pass	State
2021-10-29	WES DJ GATHERING - FREDERICK CS — high-priority violation on file	DACONO AREA, Weld, CO	Pass	State
2021-10-28	LARAMIE ENERGY - CONN CREEK GAS — high-priority violation on file	PARACHUTE 10.1 MI. W OF, Garfield, CO	Pass	State
2021-10-28	WES DJ GATHERING - FREDERICK CS — high-priority violation on file	DACONO AREA, Weld, CO	Pass	State
2021-10-28	BONANZA CRK ENERGY - NORTH PLATTE 24-34	KERSEY 6.1 MI. N OF, Weld, CO	Pass	State
2021-10-27	LARAMIE ENERGY - CONN CREEK GAS — high-priority violation on file	PARACHUTE 10.1 MI. W OF, Garfield, CO	Pass	State
2021-10-27	WES DJ GATHERING - FREDERICK CS — high-priority violation on file	DACONO AREA, Weld, CO	Pass	State
2021-10-27	KERR MCGEE - MUSTANG 14-26 PROD FACIL	KERSEY 9.4 MI. N OF, Weld, CO	Pass	State
2021-10-27	KERR MCGEE - MUSTANG 14-26 PROD FACIL	KERSEY 9.4 MI. N OF, Weld, CO	Fail	State
2021-10-26	LARAMIE ENERGY - CONN CREEK GAS — high-priority violation on file	PARACHUTE 10.1 MI. W OF, Garfield, CO	Pass	State
2021-10-26	WES DJ GATHERING - FREDERICK CS — high-priority violation on file	DACONO AREA, Weld, CO	Pass	State
2021-10-25	PLAINS END, LLC	ARVADA, Jefferson, CO	Pass	State
2021-10-25	PLAINS END, LLC	ARVADA, Jefferson, CO	Pass	State
2021-10-25	PLAINS END, LLC	ARVADA, Jefferson, CO	Pass	State
2021-10-25	PLAINS END, LLC	ARVADA, Jefferson, CO	Pass	State
2021-10-25	WES DJ GATHERING - FREDERICK CS — high-priority violation on file	DACONO AREA, Weld, CO	Pass	State
2021-10-22	BARGATH LLC - COTTONWOOD POINT CS	RIFLE AREA, Garfield, CO	Pass	State
2021-10-21	CHEVRON USA INC - PICEANCE BASIN CENTRAL	PARACHUTE 16.6 MI. NW OF, Garfield, CO	Pass	State
2021-10-21	WEXPRO CO - E HIAWATHA/DEEP	DINOSAUR 55.9 MI. NE OF, Moffat, CO	Pass	State
2021-10-21	WILLIAMS FIELD - WILLOW CREEK GAS PLANT — high-priority violation on file	RIO BLANCO 18 MILES W OF, Rio Blanco, CO	Pass	State
2021-10-20	WILLIAMS FIELD - WILLOW CREEK GAS PLANT — high-priority violation on file	RIO BLANCO 18 MILES W OF, Rio Blanco, CO	Pass	State
2021-10-20	WILLIAMS FIELD - WILLOW CREEK GAS PLANT — high-priority violation on file	RIO BLANCO 18 MILES W OF, Rio Blanco, CO	Pass	State
2021-10-19	ROCKIES EXPRESS PIPELINE LLC - MEEKER	MEEKER 21.0 MI. N OF, Rio Blanco, CO	Pass	State
2021-10-19	ROCKIES EXPRESS PIPELINE LLC - MEEKER	MEEKER 21.0 MI. N OF, Rio Blanco, CO	Pass	State
2021-10-19	DCP OPERATING CO - GREELEY NATURAL GAS P	EVANS AREA, Weld, CO	Pass	State
2021-10-19	DCP OPERATING CO - GREELEY NATURAL GAS P	EVANS AREA, Weld, CO	Pass	State
2021-10-19	DCP OPERATING CO - GREELEY NATURAL GAS P	EVANS AREA, Weld, CO	Pass	State
2021-10-19	DCP OPERATING CO - GREELEY NATURAL GAS P	EVANS AREA, Weld, CO	Pass	State
2021-10-18	TEP ROCKY MTN - CLOUGH PRODUCTION	RIFLE AREA, Garfield, CO	Pass	State
2021-10-18	DCP OPERATING CO - GREELEY NATURAL GAS P	EVANS AREA, Weld, CO	Pass	State
2021-10-18	DCP OPERATING CO - GREELEY NATURAL GAS P	EVANS AREA, Weld, CO	Pass	State
2021-10-18	DCP OPERATING CO - GREELEY NATURAL GAS P	EVANS AREA, Weld, CO	Pass	State
2021-10-18	DCP OPERATING CO - GREELEY NATURAL GAS P	EVANS AREA, Weld, CO	Pass	State
2021-10-15	EL PASO NATURAL GAS COMPANY - BONDAD COMPRESSOR STATION	DURANGO, La Plata, CO	Pass	State
2021-10-14	SUNCOR ENERGY - DENVER REFINERY — high-priority violation on file	COMMERCE CITY, Adams, CO	Pass	State
2021-10-14	WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file	FORT LUPTON, Weld, CO	Pass	State
2021-10-14	WES DJ GATHERING - FREDERICK CS — high-priority violation on file	DACONO AREA, Weld, CO	Pass	State
2021-10-14	ARKOMA OPERATIONS, LLC - IGNACIO GAS TREATING PLANT	SOUTHERN UTE RESERVATION, La Plata, CO	Pass	State
2021-10-13	COLORADO SPRINGS UTILITIES - NIXON PLT	FOUNTAIN AREA, El Paso, CO	Pass	State
2021-10-13	WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file	FORT LUPTON, Weld, CO	Pass	State
2021-10-12	FULCRUM ENERGY - OXBOW 0880 S29	WALDEN 8.9 MI. N OF, Jackson, CO	N/A	State
2021-10-12	FULCRUM ENERGY - OXBOW 0880 S29	WALDEN 8.9 MI. N OF, Jackson, CO	N/A	State
2021-10-12	WEXPRO CO - POWDER WASH	CRAIG 47.7 MI. NW OF, Moffat, CO	Pass	State
2021-10-12	UTAH GAS - WEST DRAGON TRAIL C.S.	RANGELY 15.4 MI. S OF, Rio Blanco, CO	Pass	State
2021-10-12	WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file	FORT LUPTON, Weld, CO	Pass	State
2021-10-11	FULCRUM ENERGY - OXBOW 0880 S29	WALDEN 8.9 MI. N OF, Jackson, CO	N/A	State
2021-10-11	WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file	FORT LUPTON, Weld, CO	Pass	State
2021-10-05	CONSERVATION SERVICES INC	AURORA 3.9 MI. NE OF, Adams, CO	Pass	State
2021-10-05	QB ENERGY OPERATING - CDP K22 496	PARACHUTE 16.4 MI. N OF, Garfield, CO	Pass	State
2021-10-05	QB ENERGY OPERATING - CDP K22 496	PARACHUTE 16.4 MI. N OF, Garfield, CO	Pass	State
2021-10-05	GRAND RIVER GATHERING, LLC- HIGH MESA CS	PARACHUTE 2.5 MI. S OF, Garfield, CO	Pass	State
2021-10-05	SIMCOE - SALVADOR I / II CENTRAL DELIVERY POINT	DURANGO, La Plata, CO	Pass	U.S. EPA
2021-10-05	SIMCOE - SALVADOR I / II CENTRAL DELIVERY POINT	DURANGO, La Plata, CO	Pass	U.S. EPA
2021-10-05	SIMCOE - SALVADOR I / II CENTRAL DELIVERY POINT	DURANGO, La Plata, CO	Pass	U.S. EPA
2021-10-04	GRAND RIVER GATH - OH14 WELL PAD	DEBEQUE 2.5 MI. NE OF, Mesa, CO	Pass	State
2021-10-04	DCP OPERATING CO - O'CONNOR GAS PLANT	KERSEY AREA, Weld, CO	Pass	State

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

What this page shows

This page covers Clean Air Act facilities in the EPA air register with stack tests in CO for 2021. It lists 407 stack tests recorded in 2021.