EPA Air · stack tests by state and year

Air-emissions stack tests in Colorado, 2022

460Stack 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 2022; one facility can appear more than once, because this is a record of what happened rather than a list of places.

Counties in Colorado, 2022

Colorado, other years

Air-emissions stack tests recorded in Colorado, 2022

Date	Facility	Where	Kind	Agency
2022-09-24	TRI STATE GENERATION & TRANS - CRAIG	CRAIG 2.9 MI. SW OF, Moffat, CO	Pass	State
2022-09-22	AURORA CONV CENT- GAYLORD ROCKIES RESORT	AURORA, Adams, CO	Pass	State
2022-09-19	DCP OPERATING CO - ENTERPRISE C.S. — high-priority violation on file	KEENESBURG 5.2 MI. N OF, Weld, CO	Pass	State
2022-09-19	SUMMIT MIDSTREAM NIOBR - HEREFORD RANCH	GROVER 11.0 MI. NW OF, Weld, CO	Pass	State
2022-09-19	SUMMIT MIDSTREAM NIOBR - ANGUS COMPR STN	GROVER 8.8 MI. N OF, Weld, CO	Pass	State
2022-09-19	SUMMIT MIDSTREAM NIOBR - ANGUS COMPR STN	GROVER 8.8 MI. N OF, Weld, CO	Pass	State
2022-09-19	SUMMIT MIDSTREAM NIOBR - ANGUS COMPR STN	GROVER 8.8 MI. N OF, Weld, CO	Pass	State
2022-09-16	NYDIG DFM - SURPRISE S4 FACILITY	WALDEN AREA, Jackson, CO	Pass	State
2022-09-14	WILLIAMS FRONT RANGE - TIGER COMPRESSOR	HUDSON, Weld, CO	Pass	State
2022-09-13	WASTE MANAGEMENT - COLORADO SPRINGS RECY	COLORADO SPRINGS AREA, El Paso, CO	Pass	State
2022-09-13	DCP OPERATING CO - PLATTEVILLE GPP	PLATTEVILLE AREA, Weld, CO	Pass	State
2022-09-13	WILLIAMS FRONT RANGE - HOOKSIDE COMPRESS	GROVER 11.1 MI. N OF, Weld, CO	Pass	State
2022-09-08	CHEVRON USA INC - PICEANCE BASIN CENTRAL	PARACHUTE 16.6 MI. NW OF, Garfield, CO	N/A	State
2022-09-08	DENVER REGIONAL/FRONT RANGE LANDFILL — high-priority violation on file	ERIE AREA, Weld, CO	Pass	State
2022-09-08	BONANZA CREEK - STATE NORTH PLATTE T-36	KERSEY 8.3 MI. E OF, Weld, CO	Pass	State
2022-09-07	SUNCOR ENERGY - DENVER REFINERY — high-priority violation on file	COMMERCE CITY, Adams, CO	Pass	State
2022-09-07	SUNCOR ENERGY - DENVER REFINERY — high-priority violation on file	COMMERCE CITY, Adams, CO	Pass	State
2022-09-07	EAST CHEYENNE GAS STORAGE FACILITY	PEETZ, Logan, CO	Pass	State
2022-09-07	BONANZA CREEK - STATE NORTH PLATTE T-36	KERSEY 8.3 MI. E OF, Weld, CO	Pass	State
2022-09-07	BONANZA CREEK - STATE NORTH PLATTE T-36	KERSEY 8.3 MI. E OF, Weld, CO	Pass	State
2022-09-07	BONANZA CREEK - STATE NORTH PLATTE T-36	KERSEY 8.3 MI. E OF, Weld, CO	Pass	State
2022-09-06	SIMCOE - WOLF POINT CENTRAL DELIVERY POINT	LA PLATA COUNTY, La Plata, CO	Pass	U.S. EPA
2022-08-31	WES DJ GATHERING - FREDERICK CS — high-priority violation on file	DACONO AREA, Weld, CO	Pass	State
2022-08-31	BISON IV - TRUE RANCH FEE 2326H	NUNN 19.5 MI. N OF, Weld, CO	Pass	State
2022-08-31	BISON IV - TRUE RANCH FEE 2326H	NUNN 19.5 MI. N OF, Weld, CO	Pass	State
2022-08-30	LARAMIE ENERGY - MVS COMPRESSOR STATION	COLLBRAN 10.8 MI. E OF, Mesa, CO	Pass	State
2022-08-29	FULCRUM ENERGY - MUTUAL 0780 S17 PAD	WALDEN 11.7 MI. SW OF, Jackson, CO	Pass	State
2022-08-29	FULCRUM ENERGY - GREGORY 0780 S9 PAD	WALDEN 11.2 MI. N OF, Jackson, CO	Pass	State
2022-08-24	GRAND RIVER GATHERING - PUMBA CS	RIFLE 3.4 MI. S OF, Garfield, CO	Pass	State
2022-08-24	RED CEDAR GATHERING COMPANY - SOUTH IGNACIO CENTRAL DEL	SOUTHERN UTE RESERVATION, La Plata, CO	Pass	State
2022-08-19	GRAND RIVER GATHERING - HUNTER MESA CS	RIFLE 3.3 MI. SE OF, Garfield, CO	Pass	State
2022-08-19	GRAND RIVER GATHERING - HUNTER MESA CS	RIFLE 3.3 MI. SE OF, Garfield, CO	Pass	State
2022-08-19	COORSTEK INC - CLEAR CREEK VALLEY PLANT — high-priority violation on file	GOLDEN AREA, Jefferson, CO	Fail	State
2022-08-19	COORSTEK INC - CLEAR CREEK VALLEY PLANT — high-priority violation on file	GOLDEN AREA, Jefferson, CO	Fail	State
2022-08-19	COORSTEK INC - CLEAR CREEK VALLEY PLANT — high-priority violation on file	GOLDEN AREA, Jefferson, CO	Fail	State
2022-08-18	CEMEX CONSTRUCTION MATERIALS - LYONS — high-priority violation on file	LYONS AREA, Boulder, CO	Pass	State
2022-08-18	BARGATH LLC - PARACHUTE CREEK GAS PLANT	PARACHUTE 2.9 MI. NW OF, Garfield, CO	Pass	State
2022-08-18	BARGATH LLC - PARACHUTE CREEK GAS PLANT	PARACHUTE 2.9 MI. NW OF, Garfield, CO	Pass	State
2022-08-18	GRAND RIVER GATHERING - HUNTER MESA CS	RIFLE 3.3 MI. SE OF, Garfield, CO	Pass	State
2022-08-18	DCP OPERATING CO - GODFREY BOTTOM C.S.	EVANS AREA, Weld, CO	Pass	State
2022-08-18	DCP OPERATING CO - GODFREY BOTTOM C.S.	EVANS AREA, Weld, CO	Pass	State
2022-08-17	CEMEX CONSTRUCTION MATERIALS - LYONS — high-priority violation on file	LYONS AREA, Boulder, CO	Pass	State
2022-08-17	BARGATH LLC - PARACHUTE CREEK GAS PLANT	PARACHUTE 2.9 MI. NW OF, Garfield, CO	Pass	State
2022-08-17	BARGATH LLC - PARACHUTE CREEK GAS PLANT	PARACHUTE 2.9 MI. NW OF, Garfield, CO	Pass	State
2022-08-17	GRAND RIVER GATHERING - HUNTER MESA CS	RIFLE 3.3 MI. SE OF, Garfield, CO	Pass	State
2022-08-16	GRAND RIVER GATHERING - HUNTER MESA CS	RIFLE 3.3 MI. SE OF, Garfield, CO	Pass	State
2022-08-16	COORSTEK INC - CLEAR CREEK VALLEY PLANT — high-priority violation on file	GOLDEN AREA, Jefferson, CO	Pass	State
2022-08-16	LEPRINO FOODS COMPANY - GREELEY PLANT	GREELEY, Weld, CO	Pass	State
2022-08-16	LEPRINO FOODS COMPANY - GREELEY PLANT	GREELEY, Weld, CO	Pass	State
2022-08-16	DCP OPERATING CO - GREELEY NATURAL GAS P	EVANS AREA, Weld, CO	Pass	State
2022-08-16	DCP OPERATING CO - GREELEY NATURAL GAS P	EVANS AREA, Weld, CO	Pass	State
2022-08-16	DCP OPERATING CO - GREELEY NATURAL GAS P	EVANS AREA, Weld, CO	Pass	State
2022-08-16	DCP OPERATING CO - GREELEY NATURAL GAS P	EVANS AREA, Weld, CO	Pass	State
2022-08-16	DCP OPERATING CO - ROCKY TURBINE CS	KERSEY 8.6 MI. NE OF, Weld, CO	Pass	State
2022-08-16	DCP OPERATING CO - ROCKY TURBINE CS	KERSEY 8.6 MI. NE OF, Weld, CO	Pass	State
2022-08-15	GRAND RIVER GATHERING - PUMBA CS	RIFLE 3.4 MI. S OF, Garfield, CO	Pass	State
2022-08-15	NYDIG DFM - OXBOW PAD	WALDEN 8.8 MI. N OF, Jackson, CO	Pass	State
2022-08-15	NYDIG DFM - OXBOW PAD	WALDEN 8.8 MI. N OF, Jackson, CO	Pass	State
2022-08-15	DCP OPERATING CO - GREELEY NATURAL GAS P	EVANS AREA, Weld, CO	Pass	State
2022-08-15	DCP OPERATING CO - GREELEY NATURAL GAS P	EVANS AREA, Weld, CO	Pass	State
2022-08-15	DCP OPERATING CO - GREELEY NATURAL GAS P	EVANS AREA, Weld, CO	Pass	State
2022-08-15	DCP OPERATING CO - GREELEY NATURAL GAS P	EVANS AREA, Weld, CO	Pass	State
2022-08-15	DCP OPERATING CO - CROSSROADS FACILITY	KERSEY 5.0 MI. N OF, Weld, CO	Pass	State
2022-08-15	DCP OPERATING CO - CROSSROADS FACILITY	KERSEY 5.0 MI. N OF, Weld, CO	Pass	State
2022-08-12	NYDIG DFM - GREGORY 0780 1-9H	WALDEN 11.2 MI. N OF, Jackson, CO	N/A	State
2022-08-12	NYDIG DFM - GREGORY 0780 1-9H	WALDEN 11.2 MI. N OF, Jackson, CO	Pass	State
2022-08-11	TEP ROCKY MTN- BAILEY COMPRESSOR STATION	SILT 2.2 MI. S OF, Garfield, CO	Pass	State
2022-08-11	TEP ROCKY MTN- BAILEY COMPRESSOR STATION	SILT 2.2 MI. S OF, Garfield, CO	Pass	State
2022-08-11	MCATEE CONST - STERLING ASPHALT PLANT	STERLING, Logan, CO	Pass	State
2022-08-11	RED CEDAR GATHERING COMPANY - TRAIL CANYON COMPRESSOR STATION	SOUTHERN UTE RESERVATION, La Plata, CO	Pass	State
2022-08-10	TEP ROCKY MTN- BAILEY COMPRESSOR STATION	SILT 2.2 MI. S OF, Garfield, CO	Pass	State
2022-08-10	DCP OPERATING CO - LUCERNE 2 GAS PLANT — high-priority violation on file	GREELEY AREA, Weld, CO	Pass	State
2022-08-10	DCP OPERATING CO - O'CONNOR GAS PLANT	KERSEY AREA, Weld, CO	Pass	State
2022-08-10	DCP OPERATING CO - O'CONNOR GAS PLANT	KERSEY AREA, Weld, CO	Pass	State
2022-08-10	HIGHPOINT - SIEBRING 5-63-32 SENE PRODUC	KERSEY AREA, Weld, CO	Pass	State
2022-08-10	RED CEDAR GATHERING COMPANY - SPRING CREEK COMPRESSOR STATION	IGNACIO, La Plata, CO	Pass	State
2022-08-09	TEP ROCKY MTN- BAILEY COMPRESSOR STATION	SILT 2.2 MI. S OF, Garfield, CO	Pass	State
2022-08-09	TEP ROCKY MTN- BAILEY COMPRESSOR STATION	SILT 2.2 MI. S OF, Garfield, CO	Pass	State
2022-08-09	SUMMIT DJ-S - HEMBERGER CS	BRIGGSDALE, Weld, CO	Pass	State
2022-08-05	VERDAD RESOURCES - SONIC STAR 1101 PAD	RAYMER (NEW RAYMER) 11.0 MI. N, Weld, CO	Pass	State
2022-08-04	OWENS CORNING - DENVER ROOFING PLANT	DENVER AREA, Adams, CO	Pass	State
2022-08-04	ENTERPRISE PRODUCTS OP- JACKRABBIT CS	PARACHUTE 9.5 MI. NW OF, Garfield, CO	Pass	State
2022-08-04	ENTERPRISE PRODUCTS OP- JACKRABBIT CS	PARACHUTE 9.5 MI. NW OF, Garfield, CO	Pass	State
2022-08-04	1876 RESOURCES - LITZENBERGER PAD	MEAD AREA, Weld, CO	Pass	State
2022-08-03	ROCKY MTN NAT GAS - CRYSTAL RIVER CS	CARBONDALE 2.5 MI. W OF, Garfield, CO	Pass	State
2022-08-03	GCC ENERGY - KING COAL MINE II & III	HESPERUS, La Plata, CO	Pass	State
2022-08-02	DCP OPERATING CO - WELLS RANCH CS	KERSEY 7.7 MI. NE OF, Weld, CO	Pass	State
2022-08-02	DCP OPERATING CO - WELLS RANCH CS	KERSEY 7.7 MI. NE OF, Weld, CO	Pass	State
2022-08-01	DCP OPERATING CO - WELLS RANCH CS	KERSEY 7.7 MI. NE OF, Weld, CO	Pass	State
2022-08-01	DCP OPERATING CO - WELLS RANCH CS	KERSEY 7.7 MI. NE OF, Weld, CO	Pass	State
2022-08-01	SUMMIT DJ-O OPERATING - KOKI — high-priority violation on file	JACKSON LAKE, Weld, CO	Pass	State
2022-07-31	TWIN LANDFILL CORP. - MILNER LANDFILL — high-priority violation on file	STEAMBOAT SPRINGS 8.1 MI. W OF, Routt, CO	Pass	State
2022-07-29	PUBLIC SERVICE CO - CHEROKEE PLT	COMMERCE CITY AREA, Adams, CO	Pass	State
2022-07-28	ROCKY MOUNTAIN MIDSTREAM - LOCHBUIE C.S.	LOCHBUIE AREA, Weld, CO	Pass	State
2022-07-27	AURORA CONV CENT- GAYLORD ROCKIES RESORT	AURORA, Adams, CO	Pass	State
2022-07-27	AURORA CONV CENT- GAYLORD ROCKIES RESORT	AURORA, Adams, CO	Fail	State
2022-07-27	MOLSON COORS USA LLC - GOLDEN BREWERY — high-priority violation on file	GOLDEN AREA, Jefferson, CO	Pass	State
2022-07-27	MOLSON COORS USA LLC - GOLDEN BREWERY — high-priority violation on file	GOLDEN AREA, Jefferson, CO	Pass	State
2022-07-27	MOLSON COORS USA LLC - GOLDEN BREWERY — high-priority violation on file	GOLDEN AREA, Jefferson, CO	Pass	State
2022-07-27	MOLSON COORS USA LLC - GOLDEN BREWERY — high-priority violation on file	GOLDEN AREA, Jefferson, CO	Pass	State

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