EPA Air · stack tests by state and year
Air-emissions stack tests in Colorado, 2024
- 400Stack 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 2024; one facility can appear more than once, because this is a record of what happened rather than a list of places.
Counties in Colorado, 2024
- Weld County 170
- Garfield County 53
- Jefferson County 45
- Adams County 20
- Arapahoe County 15
- Rio Blanco County 15
- Pueblo County 14
- Boulder County 10
- Jackson County 10
- Cheyenne County 9
- Mesa County 7
- Denver County 4
- Fremont County 4
- Routt County 4
- Larimer County 3
- El Paso County 3
- Moffat County 3
Colorado, other years
Air-emissions stack tests recorded in Colorado, 2024
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2024-09-17 | CEMEX CONSTRUCTION MATERIALS - LYONS — high-priority violation on file | LYONS AREA, Boulder, CO | Pass | State |
| 2024-09-17 | WASTE MGMT - NORTH WELD LANDFILL | SEVERANCE AREA, Weld, CO | Pass | State |
| 2024-09-13 | BONANZA CRK STATE NORTH PLATTE CPF 42-26 | KERSEY 7.1 MI. N OF, Weld, CO | Pass | State |
| 2024-09-13 | KERR-MCGEE O&G GADDIS 3-36HZ | JOHNSTOWN AREA, Weld, CO | Pass | State |
| 2024-09-12 | BONANZA CRK STATE NORTH PLATTE CPF 42-26 | KERSEY 7.1 MI. N OF, Weld, CO | Pass | State |
| 2024-09-12 | BONANZA CRK STATE NORTH PLATTE CPF 42-26 | KERSEY 7.1 MI. N OF, Weld, CO | Pass | State |
| 2024-09-12 | BONANZA CREEK - STATE PRONGHORN CPF 41-3 | WIGGINS 11.6 MI. NW OF, Weld, CO | Pass | State |
| 2024-09-11 | SUNCOR ENERGY - DENVER REFINERY — high-priority violation on file | COMMERCE CITY, Adams, CO | Pass | State |
| 2024-09-11 | EXTRACTION - WAKE EAST 32N PROD FACILITY | GREELEY AREA, Weld, CO | Pass | State |
| 2024-09-11 | EXTRACTION - WAKE EAST 32N PROD FACILITY | GREELEY AREA, Weld, CO | Pass | State |
| 2024-09-10 | PDC ENERGY - EVANS 7-26 PAD | EVANS, Weld, CO | Fail | State |
| 2024-09-10 | PDC ENERGY - EVANS 7-26 PAD | EVANS, Weld, CO | Fail | State |
| 2024-09-06 | BONANZA CREEK - STATE NORTH PLATTE T-36 | KERSEY 8.3 MI. E OF, Weld, CO | Pass | State |
| 2024-09-06 | BONANZA CREEK - STATE NORTH PLATTE T-36 | KERSEY 8.3 MI. E OF, Weld, CO | Pass | State |
| 2024-09-06 | BONANZA CREEK - STATE NORTH PLATTE T-36 | KERSEY 8.3 MI. E OF, Weld, CO | Pass | State |
| 2024-09-03 | PDC ENERGY - WIEDEMAN/BOOMERANG PAD — high-priority violation on file | GREELEY AREA, Weld, CO | Pass | State |
| 2024-08-27 | PHILLIPS 66 PIPELINE - DENVER TERMINAL | COMMERCE CITY, Adams, CO | Pass | State |
| 2024-08-22 | EXTRACTION - WAKE EAST 32N PROD FACILITY | GREELEY AREA, Weld, CO | Fail | State |
| 2024-08-22 | EXTRACTION - WAKE EAST 32N PROD FACILITY | GREELEY AREA, Weld, CO | Fail | State |
| 2024-08-21 | BARGATH LLC - PARACHUTE CREEK GAS PLANT | PARACHUTE 2.9 MI. NW OF, Garfield, CO | Pass | State |
| 2024-08-21 | ROCKY MOUNTAIN BOTTLE CO - 10619 W 50TH | WHEAT RIDGE, Jefferson, CO | Pass | State |
| 2024-08-21 | EXTRACTION - WAKE EAST 32N PROD FACILITY | GREELEY AREA, Weld, CO | Pass | State |
| 2024-08-21 | EXTRACTION - WAKE EAST 32N PROD FACILITY | GREELEY AREA, Weld, CO | Pass | State |
| 2024-08-20 | BARGATH LLC - PARACHUTE CREEK GAS PLANT | PARACHUTE 2.9 MI. NW OF, Garfield, CO | Pass | State |
| 2024-08-20 | BARGATH LLC - PARACHUTE CREEK GAS PLANT | PARACHUTE 2.9 MI. NW OF, Garfield, CO | Pass | State |
| 2024-08-15 | CRESTONE PEAK - RUSH 4-65 29-30 SOUTH | AURORA, Arapahoe, CO | Pass | State |
| 2024-08-15 | CRESTONE PEAK - RUSH 4-65 29-30 SOUTH | AURORA, Arapahoe, CO | Pass | State |
| 2024-08-15 | CRESTONE PEAK - RUSH 4-65 29-30 SOUTH | AURORA, Arapahoe, CO | Pass | State |
| 2024-08-15 | CRESTONE PEAK - RUSH 4-65 29-30 SOUTH | AURORA, Arapahoe, CO | Pass | State |
| 2024-08-15 | CRESTONE PEAK - RUSH 4-65 29-30 SOUTH | AURORA, Arapahoe, CO | Pass | State |
| 2024-08-15 | CRESTONE PEAK - RUSH 4-65 29-30 SOUTH | AURORA, Arapahoe, CO | Pass | State |
| 2024-08-15 | SUMMIT DJ-S - CENTENNIAL GAS PLANT | GROVER 10.7 MI. S OF, Weld, CO | Pass | State |
| 2024-08-15 | SUMMIT DJ-S - CENTENNIAL GAS PLANT | GROVER 10.7 MI. S OF, Weld, CO | Pass | State |
| 2024-08-14 | TEP ROCKY MTN- BAILEY COMPRESSOR STATION | SILT 2.2 MI. S OF, Garfield, CO | Pass | State |
| 2024-08-14 | TEP ROCKY MTN- BAILEY COMPRESSOR STATION | SILT 2.2 MI. S OF, Garfield, CO | Pass | State |
| 2024-08-13 | TEP ROCKY MTN- BAILEY COMPRESSOR STATION | SILT 2.2 MI. S OF, Garfield, CO | Pass | State |
| 2024-08-13 | TEP ROCKY MTN- BAILEY COMPRESSOR STATION | SILT 2.2 MI. S OF, Garfield, CO | Pass | State |
| 2024-08-13 | DCP OPERATING CO - LUCERNE 2 GAS PLANT — high-priority violation on file | GREELEY AREA, Weld, CO | Pass | State |
| 2024-08-13 | NOBLE ENERGY - WELLS RANCH AA25 & 26 ECO | KERSEY 8.8 MI. NE OF, Weld, CO | Pass | State |
| 2024-08-12 | TEP ROCKY MTN- BAILEY COMPRESSOR STATION | SILT 2.2 MI. S OF, Garfield, CO | Pass | State |
| 2024-08-08 | CRESTONE PEAK RESOURCES - RUSH 4-65 29-3 | AURORA, Arapahoe, CO | Pass | State |
| 2024-08-08 | TEP ROCKY MT - TR 11-5-697 PROD. PIT | PARACHUTE 11.8 MI. N OF, Garfield, CO | Pass | State |
| 2024-08-08 | PLATTE RIVER POWER AUTHORITY - RAWHIDE | WELLINGTON 9.3 MI. N OF, Larimer, CO | Pass | State |
| 2024-08-08 | EXTRACTION OIL & GAS - FRYE NORTH | WINDSOR, Weld, CO | Fail | State |
| 2024-08-08 | EXTRACTION OIL & GAS - FRYE NORTH | WINDSOR, Weld, CO | Fail | State |
| 2024-08-07 | PLATTE RIVER POWER AUTHORITY - RAWHIDE | WELLINGTON 9.3 MI. N OF, Larimer, CO | Pass | State |
| 2024-08-07 | DCP OPERATING CO - LUCERNE 2 GAS PLANT — high-priority violation on file | GREELEY AREA, Weld, CO | Pass | State |
| 2024-08-07 | OWENS-BROCKWAY GLASS - WINDSOR #28 — high-priority violation on file | WINDSOR, Weld, CO | Pass | State |
| 2024-08-06 | NYDIG DFM - SURPRISE S9 FACILITY | WALDEN AREA, Jackson, CO | Pass | State |
| 2024-08-06 | LOCKHEED MARTIN - WATERTON PLANT USAF PJ | LITTLETON, Jefferson, CO | Pass | State |
| 2024-08-06 | GCC RIO GRANDE - PUEBLO CEMENT PLANT — high-priority violation on file | PUEBLO 4.5 MI. S OF, Pueblo, CO | Pass | State |
| 2024-08-06 | OWENS-BROCKWAY GLASS - WINDSOR #28 — high-priority violation on file | WINDSOR, Weld, CO | Pass | State |
| 2024-08-05 | NYDIG DFM - SURPRISE S9 FACILITY | WALDEN AREA, Jackson, CO | Pass | State |
| 2024-08-01 | ENTERPRISE PRODUCTS OP- JACKRABBIT CS | PARACHUTE 9.5 MI. NW OF, Garfield, CO | Pass | State |
| 2024-08-01 | COORSTEK INC - CLEAR CREEK VALLEY PLANT — high-priority violation on file | GOLDEN AREA, Jefferson, CO | Fail | State |
| 2024-07-31 | ENTERPRISE PRODUCTS OP- JACKRABBIT CS | PARACHUTE 9.5 MI. NW OF, Garfield, CO | Pass | State |
| 2024-07-31 | COORSTEK INC - CLEAR CREEK VALLEY PLANT — high-priority violation on file | GOLDEN AREA, Jefferson, CO | Pass | State |
| 2024-07-31 | HIGHPOINT - ANSCHUTZ EQUUS FARMS 4-62-28 | ORCHARD 11.6 MI. N OF, Weld, CO | Pass | State |
| 2024-07-30 | COORSTEK INC - CLEAR CREEK VALLEY PLANT — high-priority violation on file | GOLDEN AREA, Jefferson, CO | Fail | State |
| 2024-07-26 | BONANZA CREEK - STATE PRONGHORN CPF 41-3 | WIGGINS 11.6 MI. NW OF, Weld, CO | Fail | State |
| 2024-07-26 | BONANZA CREEK - STATE PRONGHORN CPF 41-3 | WIGGINS 11.6 MI. NW OF, Weld, CO | Fail | State |
| 2024-07-25 | BALL METAL BEVERAGE CONTAINER CORP | GOLDEN AREA, Jefferson, CO | Fail | State |
| 2024-07-24 | COORSTEK INC - CLEAR CREEK VALLEY PLANT — high-priority violation on file | GOLDEN AREA, Jefferson, CO | Fail | State |
| 2024-07-24 | COORSTEK INC - CLEAR CREEK VALLEY PLANT — high-priority violation on file | GOLDEN AREA, Jefferson, CO | Pass | State |
| 2024-07-23 | BALL METAL BEVERAGE CONTAINER CORP | GOLDEN AREA, Jefferson, CO | N/A | State |
| 2024-07-23 | BALL METAL BEVERAGE CONTAINER CORP | GOLDEN AREA, Jefferson, CO | Fail | State |
| 2024-07-23 | BALL METAL BEVERAGE CONTAINER CORP | GOLDEN AREA, Jefferson, CO | Fail | State |
| 2024-07-23 | BALL METAL BEVERAGE CONTAINER CORP | GOLDEN AREA, Jefferson, CO | Fail | State |
| 2024-07-23 | BALL METAL BEVERAGE CONTAINER CORP | GOLDEN AREA, Jefferson, CO | Fail | State |
| 2024-07-23 | BALL METAL BEVERAGE CONTAINER CORP | GOLDEN AREA, Jefferson, CO | Fail | State |
| 2024-07-23 | BALL METAL BEVERAGE CONTAINER CORP | GOLDEN AREA, Jefferson, CO | Fail | State |
| 2024-07-23 | BALL METAL BEVERAGE CONTAINER CORP | GOLDEN AREA, Jefferson, CO | Fail | State |
| 2024-07-23 | PUBLIC SERVICE CO - HAYDEN PLT | HAYDEN, Routt, CO | Pass | State |
| 2024-07-16 | MOLSON COORS USA LLC - GOLDEN BREWERY — high-priority violation on file | GOLDEN AREA, Jefferson, CO | Pass | State |
| 2024-07-16 | MOLSON COORS USA LLC - GOLDEN BREWERY — high-priority violation on file | GOLDEN AREA, Jefferson, CO | Pass | State |
| 2024-07-16 | COORSTEK INC - CLEAR CREEK VALLEY PLANT — high-priority violation on file | GOLDEN AREA, Jefferson, CO | Fail | State |
| 2024-07-16 | COORSTEK INC - CLEAR CREEK VALLEY PLANT — high-priority violation on file | GOLDEN AREA, Jefferson, CO | Pass | State |
| 2024-07-12 | AMRIZE PORTLAND PLANT — high-priority violation on file | FLORENCE 3.8 MI. E OF, Fremont, CO | Pass | State |
| 2024-07-11 | CEMEX CONSTRUCTION MATERIALS - LYONS — high-priority violation on file | LYONS AREA, Boulder, CO | Pass | State |
| 2024-07-11 | DCP OPERATING CO - LUCERNE 2 GAS PLANT — high-priority violation on file | GREELEY AREA, Weld, CO | Pass | State |
| 2024-07-11 | PRAIRIE OPERATING - ELDER PAD | EATON 3.7 MI. N OF, Weld, CO | Pass | State |
| 2024-07-10 | COORSTEK INC - CLEAR CREEK VALLEY PLANT — high-priority violation on file | GOLDEN AREA, Jefferson, CO | Pass | State |
| 2024-07-09 | CEMEX CONSTRUCTION MATERIALS - LYONS — high-priority violation on file | LYONS AREA, Boulder, CO | Pass | State |
| 2024-07-09 | COORSTEK INC - CLEAR CREEK VALLEY PLANT — high-priority violation on file | GOLDEN AREA, Jefferson, CO | Fail | State |
| 2024-07-09 | UTAH GAS - DRAGON TRAIL — high-priority violation on file | RANGELY 16.7 MI. S OF, Rio Blanco, CO | Pass | State |
| 2024-07-08 | CEMEX CONSTRUCTION MATERIALS - LYONS — high-priority violation on file | LYONS AREA, Boulder, CO | Pass | State |
| 2024-07-08 | COORSTEK INC - CLEAR CREEK VALLEY PLANT — high-priority violation on file | GOLDEN AREA, Jefferson, CO | Pass | State |
| 2024-07-04 | CURETON FRONT RANGE - FRONT RANGE GAS P | HUDSON AREA, Weld, CO | Fail | State |
| 2024-07-04 | CURETON FRONT RANGE - FRONT RANGE GAS P | HUDSON AREA, Weld, CO | Fail | State |
| 2024-07-03 | CURETON FRONT RANGE - FRONT RANGE GAS P | HUDSON AREA, Weld, CO | Pass | State |
| 2024-07-03 | CURETON FRONT RANGE - FRONT RANGE GAS P | HUDSON AREA, Weld, CO | Pass | State |
| 2024-07-03 | CURETON FRONT RANGE - FRONT RANGE GAS P | HUDSON AREA, Weld, CO | Pass | State |
| 2024-07-02 | CURETON FRONT RANGE - FRONT RANGE GAS P | HUDSON AREA, Weld, CO | N/A | State |
| 2024-07-02 | CURETON FRONT RANGE - FRONT RANGE GAS P | HUDSON AREA, Weld, CO | N/A | State |
| 2024-07-02 | CURETON FRONT RANGE - FRONT RANGE GAS P | HUDSON AREA, Weld, CO | N/A | State |
| 2024-07-01 | DCP OPERATING CO - ROCKY TURBINE CS | KERSEY 8.6 MI. NE OF, Weld, CO | Pass | State |
| 2024-07-01 | DCP OPERATING CO - ROCKY TURBINE CS | KERSEY 8.6 MI. NE OF, Weld, CO | Pass | State |
| 2024-06-27 | PUBLIC SERVICE CO - COMANCHE PLT — high-priority violation on file | PUEBLO, Pueblo, CO | Pending | State |
| 2024-06-27 | BLACK HILLS ELECTRIC GENERATION - PAGS | PUEBLO, Pueblo, CO | Pass | State |
| 2024-06-25 | DCP OPERATING CO - ENTERPRISE C.S. — high-priority violation on file | KEENESBURG 5.2 MI. N OF, Weld, CO | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.