EPA Air · stack tests by county and year

Air-emissions stack tests in Weld County, Colorado, 2023

246Stack 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 2023. 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, 2023

Air-emissions stack tests in Weld County, other years

Air-emissions stack tests recorded in Weld County, Colorado, 2023

Date	Facility	Kind	Agency
2023-12-19	DCP OPERATING CO - LUCERNE 2 GAS PLANT — high-priority violation on file	Pass	State
2023-12-14	KERR-MCGEE O&G - PAUL NELSON 25-29HZ	Pass	State
2023-12-13	DCP OPERATING CO - SPINDLE GAS PLANT	Pass	State
2023-12-12	ROCKY MT MIDSTREAM- KEENESBURG GAS PLANT	Pass	State
2023-12-11	DCP OPERATING CO - GREELEY NATURAL GAS P	Pass	State
2023-12-08	ASPHALT SPECIALTIES - STILES MINING RESO	Fail	State
2023-12-07	ASPHALT SPECIALTIES - STILES MINING RESO	N/A	State
2023-12-05	BONANZA CRK STATE NORTH PLATTE CPF 42-26	Fail	State
2023-12-05	BONANZA CRK STATE NORTH PLATTE CPF 42-26	Fail	State
2023-12-04	PDC ENERGY - FALKEN 9-11	Pass	State
2023-11-30	BIOCHAR NOW, LLC - BERTHOUD PLANT	Pass	State
2023-11-20	PDC ENERGY - WARD 20 SEC HZ	Pass	State
2023-11-14	PRAIRIE OPERATING CO - WEST EATON 2-A	Pass	State
2023-11-10	VERDAD RESOURCES - ROHN 1423 PAD	Pass	State
2023-11-09	VERDAD RESOURCES LLC - BOYDSTON 3535 PAD	Pass	State
2023-11-07	SOUTHERN STAR CENTRAL GAS PIPELINE CHEYE	Pass	State
2023-11-07	DCP OPERATING CO - LIBSACK C.S.	Pass	State
2023-11-03	VERDAD RESOURCES - PEGGY 2501-2525 PAD	Pass	State
2023-11-03	COVALENCE DJ, LLC - BIGFOOT 11	Pass	State
2023-11-02	BONANZA CREEK - STATE PRONGHORN CPF 41-3	Fail	State
2023-11-02	BONANZA CREEK - STATE ANTELOPE CPF O-1	Fail	State
2023-11-02	PDC ENERGY - BOST FARM 5-7 PAD	Fail	State
2023-11-02	PDC ENERGY - BOST FARM 5-7 PAD	Fail	State
2023-11-01	BONANZA CREEK - ANTELOPE CPF 13-21	Pass	State
2023-11-01	BONANZA CREEK - ANTELOPE CPF 13-21	Fail	State
2023-11-01	BONANZA CREEK - ANTELOPE CPF 13-21	Fail	State
2023-11-01	PDC ENERGY - BOST FARM 5-7 PAD	Fail	State
2023-11-01	PDC ENERGY - BOST FARM 5-7 PAD	Fail	State
2023-10-31	BONANZA CREEK - ANTELOPE CPF 13-21	Fail	State
2023-10-31	BONANZA CREEK - ANTELOPE CPF 13-21	Pass	State
2023-10-31	BONANZA CREEK - ANTELOPE CPF 13-21	Fail	State
2023-10-31	PDC ENERGY - BOST FARM 5-7 PAD	Fail	State
2023-10-31	PDC ENERGY - BOST FARM 5-7 PAD	Fail	State
2023-10-30	BONANZA CRK STATE NORTH PLATTE CPF 42-26	Fail	State
2023-10-25	WES DJ GATHERING - FREDERICK CS — high-priority violation on file	Pass	State
2023-10-25	PRAIRIE OPERATING CO - PICKAROON TANK	Pass	State
2023-10-24	PDC - CECIL'S KERSEY FARM 17 SEC HZ	Pass	State
2023-10-20	BONANZA - LATHAM 11-13 PROD FACILITY	Pass	State
2023-10-17	COVALENCE DJ, LLC - BIGFOOT 11	Fail	State
2023-10-16	WASTE MANAGEMENT- BUFFALO RIDGE LANDFILL	N/A	State
2023-10-12	PDC ENERGY - LINCOLN STATE 3-18 PAD	Pass	State
2023-10-12	BONANZA - LATHAM 11-13 PROD FACILITY	Pass	State
2023-10-11	PDC ENERGY - LINCOLN STATE 3-18 PAD	Pass	State
2023-10-11	PDC ENERGY - LINCOLN STATE 3-18 PAD	Pass	State
2023-10-10	WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file	Pass	State
2023-10-10	PDC ENERGY - LINCOLN STATE 3-18 PAD	N/A	State
2023-10-09	KERR-MCGEE - X10017 34002054 BROWN 35NHZ	Pass	State
2023-10-09	VERDAD RESOURCES - TIMBRO 9-59 8B PAD	Pass	State
2023-10-05	WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file	Pass	State
2023-10-03	PDC ENERGY - WIEDEMAN/BOOMERANG PAD — high-priority violation on file	Pass	State
2023-10-03	PDC ENERGY - WIEDEMAN/BOOMERANG PAD — high-priority violation on file	Fail	State
2023-10-03	PDC ENERGY - WIEDEMAN/BOOMERANG PAD — high-priority violation on file	Pass	State
2023-10-03	PDC ENERGY - WIEDEMAN/BOOMERANG PAD — high-priority violation on file	N/A	State
2023-09-27	PDC ENERGY - MCNEAR 10-9 PAD	Pass	State
2023-09-27	PDC ENERGY - MCNEAR 10-9 PAD	Pass	State
2023-09-25	WES DJ GATHERING - FREDERICK CS — high-priority violation on file	Pass	State
2023-09-23	DENVER REGIONAL/FRONT RANGE LANDFILL — high-priority violation on file	Pass	State
2023-09-22	PDC ENERGY - KIEHN & WEIS	Pass	State
2023-09-22	PDC ENERGY INC - CALIFORNIA 14 SEC HZ	Pass	State
2023-09-15	DCP OPERATING CO - CROSSROADS FACILITY	N/A	State
2023-09-15	DCP OPERATING CO - CROSSROADS FACILITY	Pass	State
2023-09-15	PDC ENERGY - EVANS 7-26 PAD	Fail	State
2023-09-14	ROCKIES EXPRESS PIPELINE-CHEYENNE HUB CS	Pass	State
2023-09-14	BONANZA CREEK - STATE NORTH PLATTE T-36	Pass	State
2023-09-14	DUNAMIS ENERGY - IRISH WELL PAD	Pass	State
2023-09-14	PDC ENERGY - MCNEAR 10-9 PAD	Fail	State
2023-09-14	PDC ENERGY - MCNEAR 10-9 PAD	Pass	State
2023-09-14	DUNAMIS ENERGY - SASKATCHEWAN PAD	Pass	State
2023-09-13	DCP OPERATING CO - GREELEY NATURAL GAS P	Pass	State
2023-09-13	DUNAMIS ENERGY - ORCA COMPRESSOR STATION	Pass	State
2023-09-13	DUNAMIS ENERGY - COLORADO RIVERS WELLPAD	Pass	State
2023-09-12	BONANZA CREEK ENERGY - ANTELOPE SECTION	Pass	State
2023-09-12	PDC ENERGY - EVANS 7-26 PAD	Fail	State
2023-09-12	PDC ENERGY - EVANS 7-26 PAD	Fail	State
2023-09-12	DUNAMIS ENERGY - ORCA COMPRESSOR STATION	Pass	State
2023-09-11	PDC ENERGY - EVANS 7-26 PAD	Fail	State
2023-09-11	DUNAMIS ENERGY - ALBERTA CITIES EAST PAD	Pass	State
2023-09-06	DCP OPERATING CO - GREELEY NATURAL GAS P	N/A	State
2023-09-06	DCP OPERATING CO - GREELEY NATURAL GAS P	N/A	State
2023-09-06	DCP OPERATING CO - GREELEY NATURAL GAS P	N/A	State
2023-09-06	DCP OPERATING CO - GREELEY NATURAL GAS P	N/A	State
2023-09-06	DCP OPERATING CO - GREELEY NATURAL GAS P	Pass	State
2023-09-06	DCP OPERATING CO - GREELEY NATURAL GAS P	Pass	State
2023-09-06	DCP OPERATING CO - GREELEY NATURAL GAS P	Pass	State
2023-09-06	DCP OPERATING CO - GREELEY NATURAL GAS P	Pass	State
2023-09-05	DCP OPERATING CO - GREELEY NATURAL GAS P	Pass	State
2023-09-05	DCP OPERATING CO - GREELEY NATURAL GAS P	Pass	State
2023-09-05	DCP OPERATING CO - GREELEY NATURAL GAS P	Pass	State
2023-09-05	DCP OPERATING CO - GREELEY NATURAL GAS P	Pass	State
2023-08-31	DCP OPERATING CO - LUCERNE 2 GAS PLANT — high-priority violation on file	Fail	State
2023-08-30	BISON IV - TRUE RANCH FEE 2326H	Pass	State
2023-08-23	WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file	Pass	State
2023-08-17	DCP OPERATING CO - PLATTEVILLE GPP	Pass	State
2023-08-17	DCP OPERATING CO - O'CONNOR GAS PLANT	Pass	State
2023-08-16	DCP OPERATING CO - O'CONNOR GAS PLANT	Pass	State
2023-08-15	DCP OPERATING CO - O'CONNOR GAS PLANT	Pass	State
2023-08-15	DCP OPERATING CO - O'CONNOR GAS PLANT	Pass	State
2023-08-15	SPELLBOUND ENERGY - AKBARY / 1A PAD	Pass	State
2023-08-15	PRAIRIE OPERATING - SIMPSON 36-1H	Pass	State
2023-08-15	SPELLBOUND ENERGY - DEPORTER / 29-A	Pass	State

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