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
2023-04-04	DCP OPERATING CO - NORTHSTAR C.S.	Pass	State
2023-04-04	DCP OPERATING CO - NORTHSTAR C.S.	Pass	State
2023-04-03	DCP OPERATING CO - MILTON C.S.	Pass	State
2023-04-03	DCP OPERATING CO - MILTON C.S.	Pass	State
2023-04-03	NOBLE ENERGY - Y11 WASTE MANAGEMENT ECON	Pass	State
2023-03-31	LEPRINO FOODS COMPANY - GREELEY PLANT	Pass	State
2023-03-31	LEPRINO FOODS COMPANY - GREELEY PLANT	Pass	State
2023-03-31	DCP OPERATING CO - MARLA C.S. — high-priority violation on file	Pass	State
2023-03-31	DCP OPERATING CO - MARLA C.S. — high-priority violation on file	Pass	State
2023-03-30	DCP OPERATING CO - 70 RANCH CS	Pass	State
2023-03-30	DCP OPERATING CO - 70 RANCH CS	Pass	State
2023-03-29	DCP OPERATING CO - 70 RANCH CS	Pass	State
2023-03-28	DCP OPERATING CO - 70 RANCH CS	Pass	State
2023-03-28	ROCKY MT MIDSTREAM- KEENESBURG GAS PLANT	Fail	State
2023-03-23	WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file	Pass	State
2023-03-23	NOBLE - LD19-16 ECONODE T9N-R58W-S19 L01	Pass	State
2023-03-22	WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file	Pass	State
2023-03-22	DCP OPERATING CO - LUCERNE 2 GAS PLANT — high-priority violation on file	Pass	State
2023-03-22	DCP OPERATING CO - LUCERNE 2 GAS PLANT — high-priority violation on file	Pass	State
2023-03-16	PDC ENERGY - RIDGWAY 1 SEC HZ	Pass	State
2023-03-14	NOBLE ENERGY - WELLS RANCH AA12, AE07	Pass	State
2023-03-08	ROCKIES EXPRESS PIPELINE-CHEYENNE HUB CS	Pass	State
2023-03-07	ROCKIES EXPRESS PIPELINE-CHEYENNE HUB CS	Pass	State
2023-03-07	ROCKIES EXPRESS PIPELINE-CHEYENNE HUB CS	Pass	State
2023-03-06	ROCKIES EXPRESS PIPELINE-CHEYENNE HUB CS	Pass	State
2023-03-06	ROCKIES EXPRESS PIPELINE-CHEYENNE HUB CS	Pass	State
2023-02-14	NOBLE ENERGY - TIMBRO STATE LD16 ECONODE	Pass	State
2023-02-14	NOBLE ENERGY - LC25 ECONODE T9N-59W-S25	Pass	State
2023-02-09	PDC ENERGY - HARVESTERS STATE 7-15	Pass	State
2023-02-06	SUMMIT DJ-O OPERATING - KOKI — high-priority violation on file	Pass	State
2023-01-31	SUMMIT MIDSTREAM NIOBR - ANGUS COMPR STN	Pass	State
2023-01-31	SUMMIT MIDSTREAM NIOBR - ANGUS COMPR STN	Pass	State
2023-01-25	ROCKY MOUNTAIN MIDSTREAM - LOCHBUIE C.S.	Pass	State
2023-01-24	ROCKY MOUNTAIN MIDSTREAM - LOCHBUIE C.S.	Pass	State
2023-01-24	ROCKY MOUNTAIN MIDSTREAM - LOCHBUIE C.S.	Pass	State
2023-01-24	NOBLE ENERGY - WELLS RANCH STATE BB03	Pass	State
2023-01-19	PDC ENERGY - WIEDEMAN/BOOMERANG PAD — high-priority violation on file	Pass	State
2023-01-19	PDC ENERGY - MCGLOTHLIN 9 SEC HZ	Pass	State
2023-01-17	KERR-MCGEE GATHERING - IONE C.S.	Pass	State
2023-01-11	SUMMIT DJ-S - GROVER COMPRESSOR STATION	Pass	State
2023-01-10	DENVER REGIONAL/FRONT RANGE LANDFILL — high-priority violation on file	Pass	State
2023-01-10	DCP OPERATING CO - ENTERPRISE C.S. — high-priority violation on file	Pass	State
2023-01-10	DCP OPERATING CO - ENTERPRISE C.S. — high-priority violation on file	Pass	State
2023-01-10	DCP OPERATING CO - ENTERPRISE C.S. — high-priority violation on file	Pass	State
2023-01-04	NOBLE ENERGY - LC34 ECONODE T9N-R59W-S34	Pass	State
2023-01-03	BONANZA CREEK - STATE PRONGHORN CPF 41-3	Pass	State

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