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 |
|---|---|---|---|---|
| 2024-04-16 | ROCKY MOUNTAIN MIDSTREAM - WEST BRIGHTON | TODD CREEK AREA, Weld, CO | Pass | State |
| 2024-04-16 | ROCKY MOUNTAIN MIDSTREAM - WEST BRIGHTON | TODD CREEK AREA, Weld, CO | Pass | State |
| 2024-04-16 | EXTRACTION - ARDREY PRODUCTION FACILITY | EVANS AREA, Weld, CO | Pass | State |
| 2024-04-16 | EXTRACTION - ARDREY PRODUCTION FACILITY | EVANS AREA, Weld, CO | Pass | State |
| 2024-04-15 | NYDIG DFM - GREGORY 0780 1-9H | WALDEN 11.2 MI. N OF, Jackson, CO | Pass | State |
| 2024-04-15 | WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file | FORT LUPTON, Weld, CO | N/A | State |
| 2024-04-15 | ROCKY MOUNTAIN MIDSTREAM - WEST BRIGHTON | TODD CREEK AREA, Weld, CO | Pass | State |
| 2024-04-11 | PUBLIC SERVICE CO - CHEROKEE PLT | COMMERCE CITY AREA, Adams, CO | Pass | State |
| 2024-04-11 | SUNCOR ENERGY - DENVER REFINERY — high-priority violation on file | COMMERCE CITY, Adams, CO | Pass | State |
| 2024-04-11 | WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file | FORT LUPTON, Weld, CO | N/A | State |
| 2024-04-10 | DCP OPERATING CO - ENTERPRISE C.S. — high-priority violation on file | KEENESBURG 5.2 MI. N OF, Weld, CO | Pass | State |
| 2024-04-10 | NOBLE ENERGY - WELLS RANCH AE20 ECONODE | KERSEY 11.1 MI. NE OF, Weld, CO | Fail | State |
| 2024-04-10 | WES DJ GATHERING - LATHAM GAS PLANT | GILCREST 2.4 MI. N OF, Weld, CO | Pass | State |
| 2024-04-09 | PUBLIC SERVICE CO - CHEROKEE PLT | COMMERCE CITY AREA, Adams, CO | Pass | State |
| 2024-04-09 | WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file | FORT LUPTON, Weld, CO | Pass | State |
| 2024-04-09 | DCP OPERATING CO - ENTERPRISE C.S. — high-priority violation on file | KEENESBURG 5.2 MI. N OF, Weld, CO | Pass | State |
| 2024-04-09 | DCP OPERATING CO - NORTHSTAR C.S. | EATON 3.4 MI. N OF, Weld, CO | Pass | State |
| 2024-04-09 | DCP OPERATING CO - NORTHSTAR C.S. | EATON 3.4 MI. N OF, Weld, CO | Pass | State |
| 2024-04-05 | NYDIG DFM - SURPRISE S4 FACILITY | WALDEN AREA, Jackson, CO | Pass | State |
| 2024-04-04 | PUBLIC SERVICE CO - CHEROKEE PLT | COMMERCE CITY AREA, Adams, CO | Pass | State |
| 2024-04-04 | NYDIG DFM - SURPRISE S4 FACILITY | WALDEN AREA, Jackson, CO | Pass | State |
| 2024-04-03 | NYDIG DFM - SURPRISE S4 FACILITY | WALDEN AREA, Jackson, CO | Pass | State |
| 2024-04-02 | BARGATH LLC - PARACHUTE CREEK GAS PLANT | PARACHUTE 2.9 MI. NW OF, Garfield, CO | Fail | State |
| 2024-04-02 | BARGATH LLC - PARACHUTE CREEK GAS PLANT | PARACHUTE 2.9 MI. NW OF, Garfield, CO | Fail | State |
| 2024-04-02 | NYDIG DFM - SURPRISE S4 FACILITY | WALDEN AREA, Jackson, CO | Pass | State |
| 2024-04-02 | PDC ENERGY - CANNON PAD | BERTHOUD AREA, Weld, CO | Pass | State |
| 2024-04-02 | PDC ENERGY - HOOD 20 SEC | GREELEY AREA, Weld, CO | Pass | State |
| 2024-04-01 | NYDIG DFM - SURPRISE S4 FACILITY | WALDEN AREA, Jackson, CO | Pass | State |
| 2024-03-29 | KERR-MCGEE O&G GADDIS 3-36HZ | JOHNSTOWN AREA, Weld, CO | N/A | State |
| 2024-03-28 | PRAIRIE OPERATING - ELDER PAD | EATON 3.7 MI. N OF, Weld, CO | Fail | State |
| 2024-03-28 | PRAIRIE OPERATING - ELDER PAD | EATON 3.7 MI. N OF, Weld, CO | Fail | State |
| 2024-03-27 | CF & I STEEL L.P. DBA EVRAZ ROCKY MTN ST — high-priority violation on file | PUEBLO AREA, Pueblo, CO | N/A | State |
| 2024-03-26 | MOLSON COORS USA - GOLDEN FACILITY | GOLDEN, Jefferson, CO | N/A | State |
| 2024-03-25 | PUBLIC SERVICE CO - DENVER STEAM PLT | DENVER, Denver, CO | Pass | State |
| 2024-03-22 | QB ENERGY OPERATING - STORY GULCH C.S. — high-priority violation on file | PARACHUTE 13.8 MI. N OF, Garfield, CO | Pass | State |
| 2024-03-21 | BARGATH, LLC - HYRUP PROD FACILITY — high-priority violation on file | PARACHUTE 4.3 MI. S OF, Garfield, CO | Pass | State |
| 2024-03-21 | BARGATH, LLC - HYRUP PROD FACILITY — high-priority violation on file | PARACHUTE 4.3 MI. S OF, Garfield, CO | Pass | State |
| 2024-03-21 | QB ENERGY OPERATING - STORY GULCH C.S. — high-priority violation on file | PARACHUTE 13.8 MI. N OF, Garfield, CO | Pass | State |
| 2024-03-21 | QB ENERGY OPERATING - STORY GULCH C.S. — high-priority violation on file | PARACHUTE 13.8 MI. N OF, Garfield, CO | Pass | State |
| 2024-03-21 | DCP OPERATING CO - LUCERNE 2 GAS PLANT — high-priority violation on file | GREELEY AREA, Weld, CO | N/A | State |
| 2024-03-21 | DCP OPERATING CO - LUCERNE 2 GAS PLANT — high-priority violation on file | GREELEY AREA, Weld, CO | N/A | State |
| 2024-03-21 | DCP OPERATING CO - LUCERNE 2 GAS PLANT — high-priority violation on file | GREELEY AREA, Weld, CO | N/A | State |
| 2024-03-20 | BARGATH, LLC - HYRUP PROD FACILITY — high-priority violation on file | PARACHUTE 4.3 MI. S OF, Garfield, CO | Pass | State |
| 2024-03-20 | BARGATH, LLC - HYRUP PROD FACILITY — high-priority violation on file | PARACHUTE 4.3 MI. S OF, Garfield, CO | Pass | State |
| 2024-03-20 | QB ENERGY OPERATING - STORY GULCH C.S. — high-priority violation on file | PARACHUTE 13.8 MI. N OF, Garfield, CO | Pass | State |
| 2024-03-20 | QB ENERGY OPERATING - STORY GULCH C.S. — high-priority violation on file | PARACHUTE 13.8 MI. N OF, Garfield, CO | Pass | State |
| 2024-03-20 | WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file | FORT LUPTON, Weld, CO | Pass | State |
| 2024-03-20 | DCP OPERATING CO - LUCERNE 2 GAS PLANT — high-priority violation on file | GREELEY AREA, Weld, CO | Fail | State |
| 2024-03-19 | BARGATH, LLC - HYRUP PROD FACILITY — high-priority violation on file | PARACHUTE 4.3 MI. S OF, Garfield, CO | Pass | State |
| 2024-03-19 | BARGATH, LLC - HYRUP PROD FACILITY — high-priority violation on file | PARACHUTE 4.3 MI. S OF, Garfield, CO | Pass | State |
| 2024-03-19 | QB ENERGY OPERATING - STORY GULCH C.S. — high-priority violation on file | PARACHUTE 13.8 MI. N OF, Garfield, CO | Pass | State |
| 2024-03-19 | QB ENERGY OPERATING - STORY GULCH C.S. — high-priority violation on file | PARACHUTE 13.8 MI. N OF, Garfield, CO | Pass | State |
| 2024-03-19 | WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file | FORT LUPTON, Weld, CO | Pass | State |
| 2024-03-14 | GRAND RIVER GATHERING - HUNTER MESA CS | RIFLE 3.3 MI. SE OF, Garfield, CO | Pass | State |
| 2024-03-14 | PRAIRIE OPERATING CO - GARNET 21-K PAD | EATON AREA, Weld, CO | Pass | State |
| 2024-03-13 | SUNCOR ENERGY - DENVER REFINERY — high-priority violation on file | COMMERCE CITY, Adams, CO | Pass | State |
| 2024-03-13 | PRAIRIE OPERATING CO - RUBY 7J PF | AULT AREA, Weld, CO | Pass | State |
| 2024-03-13 | PRAIRIE OPERATING CO - RUBY 7J PF | AULT AREA, Weld, CO | Pass | State |
| 2024-03-12 | WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file | FORT LUPTON, Weld, CO | Pass | State |
| 2024-03-12 | PRAIRIE OPERATING CO - TOPAZ TANK BATT | AULT AREA, Weld, CO | Pass | State |
| 2024-03-12 | PRAIRIE OPERATING CO - TOPAZ TANK BATT | AULT AREA, Weld, CO | Pass | State |
| 2024-03-07 | ROCKY MTN NAT GAS - CRYSTAL RIVER CS | CARBONDALE 2.5 MI. W OF, Garfield, CO | Pass | State |
| 2024-03-07 | WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file | FORT LUPTON, Weld, CO | Fail | State |
| 2024-03-06 | SOUTHERN STAR CENTRAL GAS PIPELINE CHEYE | NUNN 18.4 MI. N OF, Weld, CO | Pass | State |
| 2024-03-06 | ROCKIES EXPRESS PIPELINE-CHEYENNE HUB CS | NUNN 14.3 MI. N OF, Weld, CO | Pass | State |
| 2024-03-06 | DUNAMIS ENERGY - CALGARY STREETS PAD | PIERCE AREA, Weld, CO | Pass | State |
| 2024-03-05 | ROCKIES EXPRESS PIPELINE-CHEYENNE HUB CS | NUNN 14.3 MI. N OF, Weld, CO | Pass | State |
| 2024-03-05 | ROCKIES EXPRESS PIPELINE-CHEYENNE HUB CS | NUNN 14.3 MI. N OF, Weld, CO | Pass | State |
| 2024-03-05 | ROCKIES EXPRESS PIPELINE-CHEYENNE HUB CS | NUNN 14.3 MI. N OF, Weld, CO | Pass | State |
| 2024-03-04 | ROCKIES EXPRESS PIPELINE-CHEYENNE HUB CS | NUNN 14.3 MI. N OF, Weld, CO | N/A | State |
| 2024-02-29 | BALL METAL BEVERAGE CONTAINER CORP | GOLDEN AREA, Jefferson, CO | Pass | State |
| 2024-02-29 | PUBLIC SERVICE CO - FORT SAINT VRAIN PLT | MILLIKEN AREA, Weld, CO | Pass | State |
| 2024-02-28 | PUBLIC SERVICE CO - FORT SAINT VRAIN PLT | MILLIKEN AREA, Weld, CO | Pass | State |
| 2024-02-28 | ROCKY MOUNTAIN MIDSTREAM - LOCHBUIE C.S. | LOCHBUIE AREA, Weld, CO | Pass | State |
| 2024-02-27 | BALL METAL BEVERAGE CONTAINER CORP | GOLDEN AREA, Jefferson, CO | Fail | State |
| 2024-02-27 | BALL METAL BEVERAGE CONTAINER CORP | GOLDEN AREA, Jefferson, CO | Fail | State |
| 2024-02-27 | BALL METAL BEVERAGE CONTAINER CORP | GOLDEN AREA, Jefferson, CO | Fail | State |
| 2024-02-27 | BALL METAL BEVERAGE CONTAINER CORP | GOLDEN AREA, Jefferson, CO | Fail | State |
| 2024-02-27 | BALL METAL BEVERAGE CONTAINER CORP | GOLDEN AREA, Jefferson, CO | Fail | State |
| 2024-02-27 | BALL METAL BEVERAGE CONTAINER CORP | GOLDEN AREA, Jefferson, CO | Fail | State |
| 2024-02-27 | BALL METAL BEVERAGE CONTAINER CORP | GOLDEN AREA, Jefferson, CO | Fail | State |
| 2024-02-27 | BALL METAL BEVERAGE CONTAINER CORP | GOLDEN AREA, Jefferson, CO | Fail | State |
| 2024-02-27 | ROCKY MOUNTAIN MIDSTREAM - LOCHBUIE C.S. | LOCHBUIE AREA, Weld, CO | Pass | State |
| 2024-02-26 | WES WATTENBURG - CENTRAL OIL STABIL | HUDSON 6.1 MI. N OF, Weld, CO | N/A | State |
| 2024-02-26 | ROCKY MOUNTAIN MIDSTREAM - LOCHBUIE C.S. | LOCHBUIE AREA, Weld, CO | Pass | State |
| 2024-02-26 | ROCKY MOUNTAIN MIDSTREAM - LOCHBUIE C.S. | LOCHBUIE AREA, Weld, CO | Pass | State |
| 2024-02-25 | NORTHWEST PIPELINE - RANGELY C.S. | RANGELY, Rio Blanco, CO | Pass | State |
| 2024-02-22 | PUBLIC SERVICE CO - FORT SAINT VRAIN PLT | MILLIKEN AREA, Weld, CO | Pass | State |
| 2024-02-21 | PUBLIC SERVICE CO - FORT SAINT VRAIN PLT | MILLIKEN AREA, Weld, CO | Pass | State |
| 2024-02-08 | WASTE MGMT - MONTROSE COUNTY LANDFILL | MONTROSE AREA, Montrose, CO | Pass | State |
| 2024-02-08 | NOBLE ENERGY - LD01 & LD12 ECONODE GEN I | RAYMER 11.0 MI. N OF, Weld, CO | N/A | State |
| 2024-02-06 | PUBLIC SERVICE CO - DENVER STEAM PLT | DENVER, Denver, CO | N/A | State |
| 2024-02-05 | NOBLE ENERGY - FOOSE T6N-R64W-S18 L01 | GREELEY 2.7 MI. N OF, Weld, CO | Pass | State |
| 2024-02-01 | ROCKIES EXPRESS PIPELINE-CHEYENNE HUB CS | NUNN 14.3 MI. N OF, Weld, CO | Fail | State |
| 2024-01-31 | BROADACRE LANDFILL INC | PUEBLO 6.0 MI. SE OF, Pueblo, CO | Pass | State |
| 2024-01-26 | CEMEX CONSTRUCTION MATERIALS - LYONS — high-priority violation on file | LYONS AREA, Boulder, CO | Pass | State |
| 2024-01-25 | CEMEX CONSTRUCTION MATERIALS - LYONS — high-priority violation on file | LYONS AREA, Boulder, CO | N/A | State |
| 2024-01-18 | TRI STATE GENERATION & TRANS - CRAIG | CRAIG 2.9 MI. SW OF, Moffat, CO | Pass | State |
| 2024-01-18 | TRI STATE GENERATION & TRANS - CRAIG | CRAIG 2.9 MI. SW OF, Moffat, CO | Pass | State |
| 2024-01-17 | CARLISLE - INSULFOAM | AURORA, Adams, CO | Pending | State |
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Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.