EPA Air · stack tests by state and year

Air-emissions stack tests in Colorado, 2020

429Stack 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 2020; one facility can appear more than once, because this is a record of what happened rather than a list of places.

Counties in Colorado, 2020

Colorado, other years

Air-emissions stack tests recorded in Colorado, 2020

Date	Facility	Where	Kind	Agency
2020-10-22	BONANZA CREEK ENERGY- NORTH PLATTE 14-36	KERSEY, Weld, CO	Pass	State
2020-10-22	BONANZA CREEK ENERGY- NORTH PLATTE 14-36	KERSEY, Weld, CO	Pass	State
2020-10-22	BONANZA CREEK ENERGY- NORTH PLATTE 14-36	KERSEY, Weld, CO	Pass	State
2020-10-22	BONANZA CREEK ENERGY- NORTH PLATTE 14-36	KERSEY, Weld, CO	Pass	State
2020-10-22	BONANZA CREEK ENERGY- NORTH PLATTE 14-36	KERSEY, Weld, CO	Pass	State
2020-10-21	ROCKY MOUNTAIN MIDSTREAM - POWHATON C.S.	BRIGHTON 3.0 MI. E OF, Adams, CO	Pass	State
2020-10-21	ROCKY MOUNTAIN MIDSTREAM - POWHATON C.S.	BRIGHTON 3.0 MI. E OF, Adams, CO	Fail	State
2020-10-21	COLORADO SPRINGS UTILITIES - NIXON PLT	FOUNTAIN AREA, El Paso, CO	Pass	State
2020-10-21	BLACK HILLS ELECTRIC GENERATION - PAGS	PUEBLO, Pueblo, CO	Pass	State
2020-10-21	BLACK HILLS ELECTRIC GENERATION - PAGS	PUEBLO, Pueblo, CO	Pass	State
2020-10-21	BONANZA CREEK - WETCO FARMS A-4 PAD	KERSEY 4.8 MI. N OF, Weld, CO	Fail	State
2020-10-21	BONANZA CREEK - WETCO FARMS A-4 PAD	KERSEY 4.8 MI. N OF, Weld, CO	Fail	State
2020-10-21	BONANZA CREEK - WETCO FARMS A-4 PAD	KERSEY 4.8 MI. N OF, Weld, CO	Fail	State
2020-10-20	ROCKY MOUNTAIN MIDSTREAM - POWHATON C.S.	BRIGHTON 3.0 MI. E OF, Adams, CO	Fail	State
2020-10-20	ROCKY MOUNTAIN MIDSTREAM - POWHATON C.S.	BRIGHTON 3.0 MI. E OF, Adams, CO	Pass	State
2020-10-20	BLACK HILLS ELECTRIC GENERATION - PAGS	PUEBLO, Pueblo, CO	Pass	State
2020-10-20	BLACK HILLS ELECTRIC GENERATION - PAGS	PUEBLO, Pueblo, CO	Pass	State
2020-10-20	NOBLE ENERGY - WELLS RANCH AA24, AA23, B	KERSEY 9.4 MI. NE OF, Weld, CO	Pass	State
2020-10-15	COLORADO INTERSTATE GAS CO - CHEYENNE CS — high-priority violation on file	NUNN 14.8 MI. N OF, Weld, CO	Pass	State
2020-10-15	EL PASO NATURAL GAS COMPANY - BONDAD COMPRESSOR STATION	DURANGO, La Plata, CO	Pass	State
2020-10-14	WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file	FORT LUPTON, Weld, CO	Pass	State
2020-10-14	SOUTHERN STAR CENTRAL GAS PIPELINE CHEYE	NUNN 18.4 MI. N OF, Weld, CO	Pass	State
2020-10-14	EXTRACTION - CITO TRUST PROD FACILITY	JOHNSTOWN, Weld, CO	Pass	State
2020-10-14	EXTRACTION - CITO TRUST PROD FACILITY	JOHNSTOWN, Weld, CO	Pass	State
2020-10-08	PLAINS END, LLC	ARVADA, Jefferson, CO	Pass	State
2020-10-07	BONANZA CREEK - LONGHORN U-10 PROD FAC	KEENESBURG 9.3 MI. N OF, Weld, CO	Pass	State
2020-10-07	BONANZA CREEK - LONGHORN U-10 PROD FAC	KEENESBURG 9.3 MI. N OF, Weld, CO	Pass	State
2020-10-07	BONANZA CREEK - LONGHORN U-10 PROD FAC	KEENESBURG 9.3 MI. N OF, Weld, CO	Pass	State
2020-10-06	BARGATH LLC - PARACHUTE CREEK GAS PLANT	PARACHUTE 2.9 MI. NW OF, Garfield, CO	Pass	State
2020-10-06	BARGATH LLC - PARACHUTE CREEK GAS PLANT	PARACHUTE 2.9 MI. NW OF, Garfield, CO	Pass	State
2020-10-06	BARGATH LLC - PARACHUTE CREEK GAS PLANT	PARACHUTE 2.9 MI. NW OF, Garfield, CO	Pass	State
2020-10-06	BARGATH LLC - PARACHUTE CREEK GAS PLANT	PARACHUTE 2.9 MI. NW OF, Garfield, CO	Pass	State
2020-10-06	SIMCOE - IRON HORSE CENTRAL DELIVERY POINT	SOUTHERN UTE RESERVATION, La Plata, CO	Pass	State
2020-10-05	SIMCOE - IRON HORSE CENTRAL DELIVERY POINT	SOUTHERN UTE RESERVATION, La Plata, CO	Pass	State
2020-10-04	SUNCOR ENERGY - DENVER REFINERY — high-priority violation on file	COMMERCE CITY, Adams, CO	Pass	State
2020-10-04	SUNCOR ENERGY - DENVER REFINERY — high-priority violation on file	COMMERCE CITY, Adams, CO	Pass	State
2020-10-01	QB ENERGY OPERATING - CDP K22 496	PARACHUTE 16.4 MI. N OF, Garfield, CO	Pass	State
2020-10-01	QB ENERGY OPERATING - CDP K22 496	PARACHUTE 16.4 MI. N OF, Garfield, CO	Pass	State
2020-09-28	UNIV OF COLO - ANSCHUTZ MEDICAL CAMPUS	AURORA, Adams, CO	Pass	State
2020-09-23	SUMMIT MIDSTREAM NIOBR - ANGUS COMPR STN	GROVER 8.8 MI. N OF, Weld, CO	Pass	State
2020-09-22	SOLID POWER - 486 S. PIERCE AVE	LOUISVILLE, Boulder, CO	Pass	State
2020-09-22	SUMMIT MIDSTREAM NIOBR - ANGUS COMPR STN	GROVER 8.8 MI. N OF, Weld, CO	Pass	State
2020-09-22	SUMMIT MIDSTREAM NIOBR - ANGUS COMPR STN	GROVER 8.8 MI. N OF, Weld, CO	Pass	State
2020-09-21	SUMMIT MIDSTREAM NIOBR - HEREFORD RANCH	GROVER 11.0 MI. NW OF, Weld, CO	Pass	State
2020-09-16	BARGATH LLC - PARACHUTE CREEK GAS PLANT	PARACHUTE 2.9 MI. NW OF, Garfield, CO	Pass	State
2020-09-16	BARGATH LLC - PARACHUTE CREEK GAS PLANT	PARACHUTE 2.9 MI. NW OF, Garfield, CO	Pass	State
2020-09-16	RED CEDAR GATHERING COMPANY - PONDEROSA COMPRESSOR STATION	DURANGO, La Plata, CO	Pass	State
2020-09-15	BARGATH LLC - PARACHUTE CREEK GAS PLANT	PARACHUTE 2.9 MI. NW OF, Garfield, CO	Pass	State
2020-09-15	BARGATH LLC - PARACHUTE CREEK GAS PLANT	PARACHUTE 2.9 MI. NW OF, Garfield, CO	Pass	State
2020-09-15	KERR MCGEE - MUSTANG Y-34 PRODUCTION FAC	KEENESBURG 10.3 MI. N OF, Weld, CO	Pass	State
2020-09-15	KERR MCGEE - MUSTANG Y-34 PRODUCTION FAC	KEENESBURG 10.3 MI. N OF, Weld, CO	Pass	State
2020-09-15	KERR MCGEE - MUSTANG Y-34 PRODUCTION FAC	KEENESBURG 10.3 MI. N OF, Weld, CO	Pass	State
2020-09-15	ARKOMA OPERATIONS, LLC - IGNACIO GAS TREATING PLANT	SOUTHERN UTE RESERVATION, La Plata, CO	Pass	State
2020-09-15	ARKOMA OPERATIONS, LLC - IGNACIO GAS TREATING PLANT	SOUTHERN UTE RESERVATION, La Plata, CO	Pass	State
2020-09-11	COORSTEK INC - CLEAR CREEK VALLEY PLANT — high-priority violation on file	GOLDEN AREA, Jefferson, CO	N/A	State
2020-09-11	COORSTEK INC - CLEAR CREEK VALLEY PLANT — high-priority violation on file	GOLDEN AREA, Jefferson, CO	N/A	State
2020-09-10	PUBLIC SERV - ROCKY MOUNTAIN ENERGY	HUDSON AREA, Weld, CO	Pass	State
2020-09-10	DCP OPERATING CO - CROSSROADS FACILITY	KERSEY 5.0 MI. N OF, Weld, CO	Pass	State
2020-09-10	DCP OPERATING CO - CROSSROADS FACILITY	KERSEY 5.0 MI. N OF, Weld, CO	Pass	State
2020-09-10	KERR MCGEE - MUSTANG 12-26 PROD FACILITY	KERSEY 9.1 MI. N OF, Weld, CO	Pass	State
2020-09-10	KERR MCGEE - MUSTANG 12-26 PROD FACILITY	KERSEY 9.1 MI. N OF, Weld, CO	Pass	State
2020-09-10	KERR MCGEE - MUSTANG 12-26 PROD FACILITY	KERSEY 9.1 MI. N OF, Weld, CO	Pass	State
2020-09-09	PUBLIC SERV - ROCKY MOUNTAIN ENERGY	HUDSON AREA, Weld, CO	Pass	State
2020-09-09	DCP OPERATING CO - GODFREY BOTTOM C.S.	EVANS AREA, Weld, CO	Pass	State
2020-09-09	DCP OPERATING CO - GODFREY BOTTOM C.S.	EVANS AREA, Weld, CO	Pass	State
2020-09-09	KERR-MCGEE - MUSTANG 44-22 PRODUCTION	KERSEY 8.6 MI. N OF, Weld, CO	Pass	State
2020-09-09	KERR-MCGEE - MUSTANG 44-22 PRODUCTION	KERSEY 8.6 MI. N OF, Weld, CO	Pass	State
2020-09-09	KERR-MCGEE - MUSTANG 44-22 PRODUCTION	KERSEY 8.6 MI. N OF, Weld, CO	Pass	State
2020-09-08	DCP OPERATING CO - ROCKY TURBINE CS	KERSEY 8.6 MI. NE OF, Weld, CO	Pass	State
2020-09-04	RED CEDAR GATHERING COMPANY - SOUTH IGNACIO CENTRAL DEL	SOUTHERN UTE RESERVATION, La Plata, CO	Pass	State
2020-09-02	MICROCHIP TECHNOLOGY INCORPORATED	COLORADO SPRINGS, El Paso, CO	Pass	State
2020-09-02	DCP OPERATING CO - GREELEY NATURAL GAS P	EVANS AREA, Weld, CO	Pass	State
2020-09-02	DCP OPERATING CO - GREELEY NATURAL GAS P	EVANS AREA, Weld, CO	Pass	State
2020-09-02	DCP OPERATING CO - GREELEY NATURAL GAS P	EVANS AREA, Weld, CO	Pass	State
2020-09-01	DCP OPERATING CO - GREELEY NATURAL GAS P	EVANS AREA, Weld, CO	Pass	State
2020-09-01	DCP OPERATING CO - GREELEY NATURAL GAS P	EVANS AREA, Weld, CO	Pass	State
2020-09-01	DCP OPERATING CO - GREELEY NATURAL GAS P	EVANS AREA, Weld, CO	Pass	State
2020-09-01	DCP OPERATING CO - GREELEY NATURAL GAS P	EVANS AREA, Weld, CO	Pass	State
2020-09-01	DCP OPERATING CO - GREELEY NATURAL GAS P	EVANS AREA, Weld, CO	Pass	State
2020-08-28	MARTIN MARIETTA - MONAGHAN MATERIALS FAC	AURORA, Adams, CO	Pass	State
2020-08-26	MOLSON COORS USA LLC - GOLDEN BREWERY — high-priority violation on file	GOLDEN AREA, Jefferson, CO	Pass	State
2020-08-26	MOLSON COORS USA LLC - GOLDEN BREWERY — high-priority violation on file	GOLDEN AREA, Jefferson, CO	Pass	State
2020-08-26	MOLSON COORS USA LLC - GOLDEN BREWERY — high-priority violation on file	GOLDEN AREA, Jefferson, CO	Pass	State
2020-08-26	MOLSON COORS USA LLC - GOLDEN BREWERY — high-priority violation on file	GOLDEN AREA, Jefferson, CO	Pass	State
2020-08-26	MOLSON COORS USA LLC - GOLDEN BREWERY — high-priority violation on file	GOLDEN AREA, Jefferson, CO	Pass	State
2020-08-26	MOLSON COORS USA LLC - GOLDEN BREWERY — high-priority violation on file	GOLDEN AREA, Jefferson, CO	Pass	State
2020-08-26	DCP OPERATING CO - MEWBOURN — high-priority violation on file	GILCREST 2.4 MI. N OF, Weld, CO	Pass	State
2020-08-24	TRUE OIL - HIGHLANDS 5-64 15-16 PAD	WATKINS AREA, Arapahoe, CO	Pass	State
2020-08-21	RED CEDAR GATHERING COMPANY - SAMBRITO COMPRESSOR STATION	SOUTHERN UTE RESERVATION, La Plata, CO	Pass	State
2020-08-20	NRO - AEROSPACE DATA FACIITY (ADF-C)	AURORA, Arapahoe, CO	Pass	State
2020-08-19	TRUE OIL - HIGHLANDS 5-64 15-16 PAD	WATKINS AREA, Arapahoe, CO	Pass	State
2020-08-18	NRO - AEROSPACE DATA FACIITY (ADF-C)	AURORA, Arapahoe, CO	Pass	State
2020-08-18	WES DJ GATHERING - LATHAM GAS PLANT	GILCREST 2.4 MI. N OF, Weld, CO	Pass	State
2020-08-10	CHEYENNE PLAINS GAS- KIRK COMP STAT	KIRK AREA, Yuma, CO	Pass	State
2020-08-06	LARAMIE ENERGY - CONN CREEK GAS — high-priority violation on file	PARACHUTE 10.1 MI. W OF, Garfield, CO	Pass	State
2020-08-06	ROCKIES EXPRESS PIPELINE-CHEYENNE HUB CS	NUNN 14.3 MI. N OF, Weld, CO	Pass	State
2020-08-06	RED CEDAR GATHERING COMPANY - TRAIL CANYON COMPRESSOR STATION	SOUTHERN UTE RESERVATION, La Plata, CO	Pass	State
2020-08-05	LARAMIE ENERGY - CONN CREEK GAS — high-priority violation on file	PARACHUTE 10.1 MI. W OF, Garfield, CO	Pass	State
2020-08-05	LARAMIE ENERGY - CONN CREEK GAS — high-priority violation on file	PARACHUTE 10.1 MI. W OF, Garfield, CO	Pass	State
2020-08-05	GCC ENERGY - KING COAL MINE II & III	HESPERUS, La Plata, CO	Pass	State

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