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
- Weld County 160
- Garfield County 60
- La Plata County 36
- Rio Blanco County 21
- Adams County 20
- Jefferson County 17
- Jackson County 15
- Pueblo County 14
- Moffat County 11
- Boulder County 10
- Eagle County 8
- Mesa County 8
- Fremont County 5
- Yuma County 3
- Larimer County 3
- Routt County 3
Colorado, other years
Air-emissions stack tests recorded in Colorado, 2021
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2021-07-08 | DCP OPERATING CO - MEWBOURN — high-priority violation on file | GILCREST 2.4 MI. N OF, Weld, CO | Pass | State |
| 2021-07-08 | DCP OPERATING CO - MEWBOURN — high-priority violation on file | GILCREST 2.4 MI. N OF, Weld, CO | Pass | State |
| 2021-07-07 | CEMEX CONSTRUCTION MATERIALS - LYONS — high-priority violation on file | LYONS AREA, Boulder, CO | Pass | State |
| 2021-07-07 | LION CONST & PAVING - FLAG SAND & GRAVEL | SILT AREA, Garfield, CO | Pass | State |
| 2021-07-07 | DCP OPERATING CO - MEWBOURN — high-priority violation on file | GILCREST 2.4 MI. N OF, Weld, CO | Pass | State |
| 2021-07-07 | DCP OPERATING CO - MEWBOURN — high-priority violation on file | GILCREST 2.4 MI. N OF, Weld, CO | Pass | State |
| 2021-07-06 | DCP OPERATING CO - MEWBOURN — high-priority violation on file | GILCREST 2.4 MI. N OF, Weld, CO | Pass | State |
| 2021-07-06 | DCP OPERATING CO - MEWBOURN — high-priority violation on file | GILCREST 2.4 MI. N OF, Weld, CO | Pass | State |
| 2021-07-01 | CITY OF FORT COLLINS DRAKE WATER RECLAMA | FORT COLLINS, Larimer, CO | Pass | State |
| 2021-06-30 | CITY OF FORT COLLINS DRAKE WATER RECLAMA | FORT COLLINS, Larimer, CO | Pass | State |
| 2021-06-29 | WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file | FORT LUPTON, Weld, CO | Pass | State |
| 2021-06-24 | BARGATH LLC - PARACHUTE CREEK GAS PLANT | PARACHUTE 2.9 MI. NW OF, Garfield, CO | Pass | State |
| 2021-06-24 | BARGATH LLC - PARACHUTE CREEK GAS PLANT | PARACHUTE 2.9 MI. NW OF, Garfield, CO | Pass | State |
| 2021-06-24 | LEPRINO FOODS COMPANY - GREELEY PLANT | GREELEY, Weld, CO | Pass | State |
| 2021-06-24 | LEPRINO FOODS COMPANY - GREELEY PLANT | GREELEY, Weld, CO | Pass | State |
| 2021-06-23 | BARGATH LLC - PARACHUTE CREEK GAS PLANT | PARACHUTE 2.9 MI. NW OF, Garfield, CO | Pass | State |
| 2021-06-23 | BARGATH LLC - PARACHUTE CREEK GAS PLANT | PARACHUTE 2.9 MI. NW OF, Garfield, CO | Pass | State |
| 2021-06-23 | TRI STATE GENERATION & TRANS - CRAIG | CRAIG 2.9 MI. SW OF, Moffat, CO | Pass | State |
| 2021-06-22 | UTAH GAS - DRAGON TRAIL — high-priority violation on file | RANGELY 16.7 MI. S OF, Rio Blanco, CO | Pass | State |
| 2021-06-22 | UTAH GAS - DRAGON TRAIL — high-priority violation on file | RANGELY 16.7 MI. S OF, Rio Blanco, CO | Pass | State |
| 2021-06-17 | AMRIZE PORTLAND PLANT — high-priority violation on file | FLORENCE 3.8 MI. E OF, Fremont, CO | Fail | State |
| 2021-06-17 | AMRIZE PORTLAND PLANT — high-priority violation on file | FLORENCE 3.8 MI. E OF, Fremont, CO | Fail | State |
| 2021-06-16 | FULCRUM ENERGY - BIGHORN-MUTUAL 0780 S17 | WALDEN 11.6 MI. N OF, Jackson, CO | Pass | State |
| 2021-06-16 | FULCRUM ENERGY - BIGHORN-MUTUAL 0780 S17 | WALDEN 11.6 MI. N OF, Jackson, CO | Pass | State |
| 2021-06-16 | UTAH GAS - DRAGON TRAIL — high-priority violation on file | RANGELY 16.7 MI. S OF, Rio Blanco, CO | Pass | State |
| 2021-06-15 | FULCRUM ENERGY - BIGHORN-MUTUAL 0780 S17 | WALDEN 11.6 MI. N OF, Jackson, CO | Pass | State |
| 2021-06-15 | PUBLIC SERVICE CO - HAYDEN PLT | HAYDEN, Routt, CO | Pass | State |
| 2021-06-10 | WES DJ GATHERING - ST. VRAIN C.S. | PLATTEVILLE AREA, Weld, CO | Pass | State |
| 2021-06-09 | TEP ROCKY MTN- BAILEY COMPRESSOR STATION | SILT 2.2 MI. S OF, Garfield, CO | Pass | State |
| 2021-06-09 | TEP ROCKY MTN- BAILEY COMPRESSOR STATION | SILT 2.2 MI. S OF, Garfield, CO | Pass | State |
| 2021-06-09 | PUBLIC SERVICE CO - HAYDEN PLT | HAYDEN, Routt, CO | Pass | State |
| 2021-06-09 | SIMCOE - TREATING SITE #8 CENTRAL DELIVERY POINT | DURANGO, La Plata, CO | Pass | State |
| 2021-06-08 | EL PASO NATURAL GAS COMPANY - BONDAD COMPRESSOR STATION | DURANGO, La Plata, CO | Pass | State |
| 2021-06-07 | TEP ROCKY MTN- BAILEY COMPRESSOR STATION | SILT 2.2 MI. S OF, Garfield, CO | Pass | State |
| 2021-06-03 | ROCKIES EXPRESS PIPELINE - BIG HOLE CS | CRAIG 30.5 MI. NW OF, Moffat, CO | Pass | State |
| 2021-06-03 | ROCKIES EXPRESS PIPELINE - BIG HOLE CS | CRAIG 30.5 MI. NW OF, Moffat, CO | Pass | State |
| 2021-06-03 | WES DJ GATHERING - LATHAM GAS PLANT | GILCREST 2.4 MI. N OF, Weld, CO | Pass | State |
| 2021-06-03 | HIGHPOINT OPERATING -CIRCLE B 5-61-27 CS | ORCHARD 4.0 MI. N OF, Weld, CO | Pass | State |
| 2021-06-02 | COLORADO SPRINGS UTILITIES - NIXON PLT | FOUNTAIN AREA, El Paso, CO | Pass | State |
| 2021-06-02 | DCP OPERATING CO - MEWBOURN — high-priority violation on file | GILCREST 2.4 MI. N OF, Weld, CO | Pass | State |
| 2021-06-01 | ALLIED WASTE SYSTEMS - TOWER LANDFILL | COMMERCE CITY, Adams, CO | Pass | State |
| 2021-05-27 | PUBLIC SERVICE CO - FORT SAINT VRAIN PLT | MILLIKEN AREA, Weld, CO | Pass | State |
| 2021-05-27 | RED CEDAR GATHERING COMPANY - PUMP CANYON COMPRESSOR STATION | LA PLATA COUNTY, La Plata, CO | Pass | State |
| 2021-05-25 | DCP OPERATING CO - ENTERPRISE C.S. — high-priority violation on file | KEENESBURG 5.2 MI. N OF, Weld, CO | Pass | State |
| 2021-05-25 | DCP OPERATING CO - ENTERPRISE C.S. — high-priority violation on file | KEENESBURG 5.2 MI. N OF, Weld, CO | Pass | State |
| 2021-05-24 | DCP OPERATING CO - LUCERNE 2 GAS PLANT — high-priority violation on file | GREELEY AREA, Weld, CO | Pass | State |
| 2021-05-24 | DCP OPERATING CO - LUCERNE 2 GAS PLANT — high-priority violation on file | GREELEY AREA, Weld, CO | Pass | State |
| 2021-05-21 | WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file | FORT LUPTON, Weld, CO | Pass | State |
| 2021-05-21 | ROCKY MT MIDSTREAM- KEENESBURG GAS PLANT | KEENESBURG, Weld, CO | N/A | State |
| 2021-05-20 | WILLIAMS FRONT RANGE - TIGER COMPRESSOR | HUDSON, Weld, CO | Pass | State |
| 2021-05-20 | ROCKY MT MIDSTREAM- KEENESBURG GAS PLANT | KEENESBURG, Weld, CO | Fail | State |
| 2021-05-19 | BLACK HILLS ELECTRIC GENERATION - PAGS | PUEBLO, Pueblo, CO | Pass | State |
| 2021-05-19 | BLACK HILLS ELECTRIC GENERATION - PAGS | PUEBLO, Pueblo, CO | Pass | State |
| 2021-05-19 | ROCKY MOUNTAIN MIDSTREAM - FT LUPTON GAS | FORT LUPTON AREA, Weld, CO | Pass | State |
| 2021-05-19 | ROCKY MOUNTAIN MIDSTREAM - FT LUPTON GAS | FORT LUPTON AREA, Weld, CO | Pass | State |
| 2021-05-18 | BLACK HILLS ELECTRIC GENERATION - PAGS | PUEBLO, Pueblo, CO | Pass | State |
| 2021-05-18 | BLACK HILLS ELECTRIC GENERATION - PAGS | PUEBLO, Pueblo, CO | Pass | State |
| 2021-05-15 | WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file | FORT LUPTON, Weld, CO | Pass | State |
| 2021-05-13 | RED CEDAR GATHERING COMPANY - MIDWAY COMPRESSOR STATION | IGNACIO, La Plata, CO | Pass | State |
| 2021-05-12 | PUBLIC SERVICE CO - PAWNEE PLT — high-priority violation on file | BRUSH 2.6 MI. N OF, Morgan, CO | Pass | State |
| 2021-05-12 | WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file | FORT LUPTON, Weld, CO | Pass | State |
| 2021-05-12 | BONANZA CRK STATE NORTH PLATTE CPF 42-26 | KERSEY 7.1 MI. N OF, Weld, CO | Pass | State |
| 2021-05-11 | BONANZA CRK STATE NORTH PLATTE CPF 42-26 | KERSEY 7.1 MI. N OF, Weld, CO | Pass | State |
| 2021-05-07 | WES DJ GATHERING - HUDSON STATION — high-priority violation on file | HUDSON AREA, Weld, CO | Pass | State |
| 2021-05-06 | UNIV OF COLO - ANSCHUTZ MEDICAL CAMPUS | AURORA, Adams, CO | Pass | State |
| 2021-05-06 | PLAINS END, LLC | ARVADA, Jefferson, CO | Pass | State |
| 2021-05-06 | WES DJ GATHERING - HUDSON STATION — high-priority violation on file | HUDSON AREA, Weld, CO | Pass | State |
| 2021-05-05 | PLAINS END, LLC | ARVADA, Jefferson, CO | Pass | State |
| 2021-05-05 | WES DJ GATHERING - FREDERICK CS — high-priority violation on file | DACONO AREA, Weld, CO | Pass | State |
| 2021-05-05 | SIMCOE - SALVADOR I / II CENTRAL DELIVERY POINT | DURANGO, La Plata, CO | Pass | U.S. EPA |
| 2021-05-04 | PLAINS END, LLC | ARVADA, Jefferson, CO | Pass | State |
| 2021-05-03 | PLAINS END, LLC | ARVADA, Jefferson, CO | Pass | State |
| 2021-04-29 | COORSTEK, INC. - CENTER FOR ADVANCED MAT | GOLDEN, Jefferson, CO | Pass | State |
| 2021-04-29 | CRIPPLE CREEK & VICTOR - CRESSON PROJECT | CRIPPLE CREEK AREA, Teller, CO | Fail | State |
| 2021-04-29 | ROCKY MOUNTAIN MIDSTREAM - AUBURN CS | KERSEY AREA, Weld, CO | Pass | State |
| 2021-04-29 | ROCKY MOUNTAIN MIDSTREAM - AUBURN CS | KERSEY AREA, Weld, CO | Pass | State |
| 2021-04-28 | ROCKY MOUNTAIN MIDSTREAM - AUBURN CS | KERSEY AREA, Weld, CO | Pass | State |
| 2021-04-28 | ROCKY MOUNTAIN MIDSTREAM - AUBURN CS | KERSEY AREA, Weld, CO | Pass | State |
| 2021-04-27 | ROCKY MOUNTAIN MIDSTREAM - AUBURN CS | KERSEY AREA, Weld, CO | Pass | State |
| 2021-04-27 | ROCKY MOUNTAIN MIDSTREAM - AUBURN CS | KERSEY AREA, Weld, CO | Pass | State |
| 2021-04-26 | ARKOMA OPERATIONS, LLC - IGNACIO GAS TREATING PLANT | SOUTHERN UTE RESERVATION, La Plata, CO | Pass | State |
| 2021-04-23 | WES DJ GATHERING - VOLLMAR C.S. | FIRESTONE AREA, Weld, CO | Pass | State |
| 2021-04-22 | MESA COUNTY ORCHARD MESA LANDFILL | GRAND JUNCTION AREA, Mesa, CO | Pass | State |
| 2021-04-22 | WES DJ GATHERING - VOLLMAR C.S. | FIRESTONE AREA, Weld, CO | Pass | State |
| 2021-04-21 | CF & I STEEL L.P. DBA EVRAZ ROCKY MTN ST — high-priority violation on file | PUEBLO AREA, Pueblo, CO | Pass | State |
| 2021-04-21 | WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file | FORT LUPTON, Weld, CO | Pass | State |
| 2021-04-20 | CF & I STEEL L.P. DBA EVRAZ ROCKY MTN ST — high-priority violation on file | PUEBLO AREA, Pueblo, CO | Pass | State |
| 2021-04-19 | WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file | FORT LUPTON, Weld, CO | Pass | State |
| 2021-04-16 | RED CEDAR GATHERING COMPANY - PONDEROSA COMPRESSOR STATION | DURANGO, La Plata, CO | Pass | State |
| 2021-04-16 | SIMCOE - WOLF POINT CENTRAL DELIVERY POINT | LA PLATA COUNTY, La Plata, CO | Pass | U.S. EPA |
| 2021-04-15 | BARGATH LLC - PARACHUTE CREEK GAS PLANT | PARACHUTE 2.9 MI. NW OF, Garfield, CO | Pending | State |
| 2021-04-15 | NOBLE ENERGY - LC34 ECONODE T9N-R59W-S34 | RAYMER 9.1 MI. NW OF, Weld, CO | Pass | State |
| 2021-04-15 | ROCKY MOUNTAIN MIDSTREAM - MUSTANG CS — high-priority violation on file | LA SALLE 8.4 MI. N OF, Weld, CO | Pass | State |
| 2021-04-15 | ROCKY MOUNTAIN MIDSTREAM - MUSTANG CS — high-priority violation on file | LA SALLE 8.4 MI. N OF, Weld, CO | Pass | State |
| 2021-04-15 | SIMCOE - MIERA CENTRAL DELIVERY POINT | LA PLATA COUNTY, La Plata, CO | Pass | U.S. EPA |
| 2021-04-14 | WES DJ GATHERING - LATHAM GAS PLANT | GILCREST 2.4 MI. N OF, Weld, CO | Fail | State |
| 2021-04-14 | ROCKY MOUNTAIN MIDSTREAM - MUSTANG CS — high-priority violation on file | LA SALLE 8.4 MI. N OF, Weld, CO | Pass | State |
| 2021-04-14 | ROCKY MOUNTAIN MIDSTREAM - MUSTANG CS — high-priority violation on file | LA SALLE 8.4 MI. N OF, Weld, CO | Pass | State |
| 2021-04-14 | SOUTHERN STAR CENTRAL GAS PIPELINE -YUMA | YUMA 5.9 MI. N OF, Yuma, CO | Pass | State |
| 2021-04-14 | RED CEDAR GATHERING COMPANY - ARKANSAS LOOP AND SIMPSON TREATING PLANTS | SOUTHERN UTE RESERVATION, La Plata, CO | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.