EPA Air · stack tests by county and year
Air-emissions stack tests in Weld County, Colorado, 2025
- 186Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Each row below is one stack test recorded against a source in Weld County, Colorado during 2025. A facility can appear several times: this is the year’s record of what happened, not a list of places. The sources themselves are on the Weld County facility page.
Weld County, Colorado, 2025
Air-emissions stack tests in Weld County, other years
Air-emissions stack tests recorded in Weld County, Colorado, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-12-31 | PDC ENERGY INC - CALIFORNIA 14 SEC HZ | Pass | State |
| 2025-12-30 | PDC ENERGY, INC. - STOUT 18 SEC HZ | Pass | State |
| 2025-12-23 | NOBLE ENERGY - LD22-A ECONODE T9N-R58W-S | Pass | State |
| 2025-12-23 | PDC ENERGY - MARKET FEDERAL 18 SEC HZ | Pass | State |
| 2025-12-18 | LEPRINO FOODS COMPANY - GREELEY PLANT | Fail | State |
| 2025-12-18 | REP PROCESSING - SEVERANCE COMP STATION | Pass | State |
| 2025-12-17 | DCP OPERATING CO - O'CONNOR GAS PLANT | Pass | State |
| 2025-12-17 | DCP OPERATING CO - O'CONNOR GAS PLANT | Pass | State |
| 2025-12-17 | BONANZA CRK ENERGY - NORTH PLATTE 24-34 | N/A | State |
| 2025-12-17 | BONANZA CRK ENERGY - NORTH PLATTE 24-34 | Pass | State |
| 2025-12-17 | REP PROCESSING - SEVERANCE COMP STATION | Pass | State |
| 2025-12-17 | REP PROCESSING - SEVERANCE COMP STATION | Pass | State |
| 2025-12-16 | HIGHPOINT - ANSCHUTZ EQUUS FARMS 4-62-28 | Pass | State |
| 2025-12-16 | REP PROCESSING - SEVERANCE COMP STATION | Pass | State |
| 2025-12-16 | REP PROCESSING - SEVERANCE COMP STATION | Pass | State |
| 2025-12-15 | REP PROCESSING - SEVERANCE COMP STATION | Pass | State |
| 2025-12-15 | REP PROCESSING - SEVERANCE COMP STATION | Pass | State |
| 2025-12-10 | DCP OPERATING CO - LUCERNE 2 GAS PLANT — high-priority violation on file | N/A | State |
| 2025-12-10 | DCP OPERATING CO - LUCERNE 2 GAS PLANT — high-priority violation on file | N/A | State |
| 2025-12-01 | BONANZA CREEK - STATE PRONGHORN CPF 41-3 | Fail | State |
| 2025-11-26 | DCP OPERATING CO - ROGGEN NGPP — high-priority violation on file | Pass | State |
| 2025-11-19 | OWENS-BROCKWAY GLASS - WINDSOR #28 — high-priority violation on file | Fail | State |
| 2025-11-17 | HIGHPOINT - ANSCHUTZ EQUUS FARMS 4-62-15 | Pass | State |
| 2025-11-13 | BONANZA CREEK ENERGY- NORTH PLATTE 14-36 | Fail | State |
| 2025-11-13 | BONANZA CREEK ENERGY- NORTH PLATTE 14-36 | Fail | State |
| 2025-11-11 | WES DJ GATHERING - FREDERICK CS — high-priority violation on file | Pass | State |
| 2025-11-05 | HIGHPOINT - ANSCHUTZ EQUUS FARMS 4-62-28 | Pass | State |
| 2025-10-30 | COLORADO INTERSTATE GAS CO - CHEYENNE CS — high-priority violation on file | Pass | State |
| 2025-10-30 | HIGHPOINT - ANSCHUTZ EQUUS FARMS 4-62-28 | Pass | State |
| 2025-10-30 | HIGHPOINT - ANSCHUTZ EQUUS FARMS 4-62-28 | Pass | State |
| 2025-10-30 | HIGHPOINT - ANSCHUTZ EQUUS FARMS 4-62-28 | Pass | State |
| 2025-10-30 | HIGHPOINT - ANSCHUTZ EQUUS FARMS 4-62-28 | Pass | State |
| 2025-10-29 | COLORADO INTERSTATE GAS CO - CHEYENNE CS — high-priority violation on file | Pass | State |
| 2025-10-29 | PUBLIC SERV - ROCKY MOUNTAIN ENERGY | Pass | State |
| 2025-10-29 | BONANZA CREEK - STATE ANTELOPE CPF O-1 | Fail | State |
| 2025-10-28 | COLORADO INTERSTATE GAS CO - CHEYENNE CS — high-priority violation on file | Pass | State |
| 2025-10-23 | WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file | Pass | State |
| 2025-10-22 | WES DJ GATHERING - FREDERICK CS — high-priority violation on file | Pass | State |
| 2025-10-21 | DCP OPERATING CO - LIBSACK C.S. | Pass | State |
| 2025-10-20 | DCP OPERATING CO - LIBSACK C.S. | N/A | State |
| 2025-10-16 | BIOCHAR NOW, LLC - BERTHOUD PLANT | Pass | State |
| 2025-10-14 | PDC ENERGY - ORR STATE 40-36 PAD | Pass | State |
| 2025-10-14 | NOBLE ENERGY - NCLP PC AA04 AA06 ECONODE | Pass | State |
| 2025-10-10 | SUMMIT DJ-O OPERATING - KOKI — high-priority violation on file | Pass | State |
| 2025-10-09 | DCP OPERATING CO - ROGGEN NGPP — high-priority violation on file | Fail | State |
| 2025-10-09 | WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file | Pass | State |
| 2025-10-09 | DCP OPERATING CO - ENTERPRISE C.S. — high-priority violation on file | Pass | State |
| 2025-10-09 | EXTRACTION - WAKE EAST 32N PROD FACILITY | Pass | State |
| 2025-10-08 | DCP OPERATING CO - ENTERPRISE C.S. — high-priority violation on file | Pending | State |
| 2025-10-08 | DCP OPERATING CO - ENTERPRISE C.S. — high-priority violation on file | Pass | State |
| 2025-10-06 | EXTRACTION - WAKE EAST 32N PROD FACILITY | Pass | State |
| 2025-10-06 | EXTRACTION - WAKE EAST 32N PROD FACILITY | Pass | State |
| 2025-10-03 | WES DJ GATHERING - FREDERICK CS — high-priority violation on file | Pass | State |
| 2025-10-02 | PAWNEE WASTE - PAWNEE WASTE E&P LANDFILL | Pass | State |
| 2025-09-29 | WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file | Pass | State |
| 2025-09-28 | ROCKY MT MIDSTREAM- KEENESBURG GAS PLANT | Pass | State |
| 2025-09-25 | LEPRINO FOODS COMPANY - GREELEY PLANT | N/A | State |
| 2025-09-25 | PRAIRIE OPERATING CO - HESTER FARMS II | Pass | State |
| 2025-09-24 | HIGHPOINT - PAPPENHEIM 6-62-23 | Pass | State |
| 2025-09-24 | PDC ENERGY - POSTLE IC WEST | Pass | State |
| 2025-09-18 | WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file | Pass | State |
| 2025-09-08 | DCP OPERATING CO - CROSSROADS FACILITY | Pass | State |
| 2025-09-08 | DCP OPERATING CO - CROSSROADS FACILITY | Pass | State |
| 2025-09-03 | BONANZA CREEK ENERGY - ANTELOPE SECTION | Pending | State |
| 2025-09-03 | BONANZA CREEK ENERGY - ANTELOPE SECTION | Pending | State |
| 2025-09-03 | PDC ENERGY - WIEDEMAN/BOOMERANG PAD — high-priority violation on file | Pass | State |
| 2025-08-28 | BONANZA CREEK - ANTELOPE CPF 13-21 | N/A | State |
| 2025-08-26 | BONANZA CRK STATE NORTH PLATTE CPF 42-26 | Pass | State |
| 2025-08-25 | BONANZA CREEK - STATE NORTH PLATTE T-36 | Pass | State |
| 2025-08-25 | BONANZA CREEK - STATE NORTH PLATTE T-36 | Pass | State |
| 2025-08-25 | BONANZA CREEK - STATE NORTH PLATTE T-36 | Pass | State |
| 2025-08-22 | WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file | N/A | State |
| 2025-08-22 | DCP OPERATING CO - LUCERNE 2 GAS PLANT — high-priority violation on file | Pass | State |
| 2025-08-21 | WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file | N/A | State |
| 2025-08-05 | NOBLE ENERGY - TIMBRO LC13 ECONODE | Pass | State |
| 2025-08-04 | EXTRACTION OIL & GAS - FRYE NORTH | Pass | State |
| 2025-08-04 | EXTRACTION OIL & GAS - FRYE NORTH | Pass | State |
| 2025-08-01 | ROCKY MOUNTAIN MIDSTREAM - AUBURN CS | Pass | State |
| 2025-07-31 | WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file | N/A | State |
| 2025-07-29 | PRAIRIE OPERATING - BURROUGHS PROD FAC | Pass | State |
| 2025-07-23 | PUBLIC SERV - ROCKY MOUNTAIN ENERGY | Pass | State |
| 2025-07-22 | PUBLIC SERV - ROCKY MOUNTAIN ENERGY | Pass | State |
| 2025-07-22 | BONANZA CREEK - ANTELOPE CPF 13-21 | Pass | State |
| 2025-07-22 | ROCK & RAIL - HIGHWAY 34 FACILITY | Pass | State |
| 2025-07-21 | BONANZA CREEK - ANTELOPE CPF 13-21 | Pass | State |
| 2025-07-21 | BONANZA CREEK - ANTELOPE CPF 13-21 | Pass | State |
| 2025-07-09 | DCP OPERATING CO - MEWBOURN — high-priority violation on file | Pass | State |
| 2025-06-27 | ROCKY MOUNTAIN MIDSTREAM - AUBURN CS | N/A | State |
| 2025-06-23 | DCP OPERATING CO - O'CONNOR GAS PLANT | Pass | State |
| 2025-06-23 | DCP OPERATING CO - O'CONNOR GAS PLANT | Pass | State |
| 2025-06-19 | DCP OPERATING CO - SULLIVAN C.S. | Pass | State |
| 2025-06-19 | PRAIRIE OPERATING CO - REEMAN PAD | Pass | State |
| 2025-06-18 | BONANZA CREEK ENERGY - ANTELOPE SECTION | Pass | State |
| 2025-06-18 | DCP OPERATING CO - ROCKY TURBINE CS | Pass | State |
| 2025-06-18 | DCP OPERATING CO - ROCKY TURBINE CS | Pass | State |
| 2025-06-12 | WASTE MGMT - NORTH WELD LANDFILL | Pass | State |
| 2025-06-09 | PDC ENERGY - VOLT 5 SEC HZ | Fail | State |
| 2025-06-03 | DCP OPERATING CO - MEWBOURN — high-priority violation on file | Pass | State |
| 2025-06-03 | NOBLE ENERGY - CUTTHROAT,BROOK,RAINBOW | Pass | State |
| 2025-05-27 | BONANZA CREEK - ANTELOPE CPF 13-21 | Pass | State |
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Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.