EPA Air · stack tests by county and year

Air-emissions stack tests in Weld County, Colorado, 2026

72Stack 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 2026. 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, 2026

Air-emissions stack tests in Weld County, other years

Air-emissions stack tests recorded in Weld County, Colorado, 2026

Date	Facility	Kind	Agency
2026-09-08	BONANZA CRK STATE NORTH PLATTE CPF 42-26	Pending	State
2026-09-02	DCP OPERATING CO - CROSSROADS FACILITY	Pending	State
2026-08-11	BONANZA CREEK ENERGY - ANTELOPE SECTION	Pass	State
2026-07-21	DCP OPERATING CO - LUCERNE 2 GAS PLANT — high-priority violation on file	N/A	State
2026-07-14	DCP OPERATING CO - O'CONNOR GAS PLANT	Pass	State
2026-07-08	BONANZA CREEK - ANTELOPE CPF 13-21	Pass	State
2026-07-07	BONANZA CREEK - ANTELOPE CPF 13-21	Pass	State
2026-07-07	BONANZA CREEK - ANTELOPE CPF 13-21	Pass	State
2026-06-30	KODAK ALARIS - KODAK MOMENTS COLORADO — high-priority violation on file	Pass	State
2026-06-29	LEPRINO FOODS COMPANY - GREELEY PLANT	N/A	State
2026-06-23	DCP OPERATING CO - ROCKY TURBINE CS	Pass	State
2026-06-23	DCP OPERATING CO - ROCKY TURBINE CS	Pass	State
2026-06-19	DCP OPERATING CO - O'CONNOR GAS PLANT	Pass	State
2026-06-16	DCP OPERATING CO - ENTERPRISE C.S. — high-priority violation on file	Pass	State
2026-06-09	PDC ENERGY, INC - LAWERENCE 33 SEC HZ	Pass	State
2026-05-28	PDC ENERGY, INC. - GOLDEN EAGLE HZ	Pass	State
2026-05-26	HIGHPOINT - HAWKINS 5-61-21	N/A	State
2026-05-14	PDC ENERGY - BEEBE 3-34 PAD	Pass	State
2026-05-13	HIGHPOINT OPERATING -CIRCLE B 5-61-27 CS	Pass	State
2026-04-27	PDC ENERGY - LEFFLER 8-21, DONN 1-21 PAD	N/A	State
2026-04-23	DCP OPERATING CO - MEWBOURN — high-priority violation on file	Pass	State
2026-04-22	HIGHPOINT - ANSCHUTZ EQUUS FARMS 4-62-28	Pass	State
2026-04-22	HIGHPOINT - ANSCHUTZ EQUUS FARMS 4-62-28	Pass	State
2026-04-21	DCP OPERATING CO - MEWBOURN — high-priority violation on file	Pass	State
2026-04-21	DCP OPERATING CO - MEWBOURN — high-priority violation on file	Pass	State
2026-04-21	WES DJ GATHERING - FREDERICK CS — high-priority violation on file	Pass	State
2026-04-21	PDC ENERGY, INC - LAWERENCE 33 SEC HZ	Pass	State
2026-04-21	PDC ENERGY, INC - LAWERENCE 33 SEC HZ	Pass	State
2026-04-20	WES DJ GATHERING - FREDERICK CS — high-priority violation on file	Pass	State
2026-04-20	DCP OPERATING CO - ENTERPRISE C.S. — high-priority violation on file	Fail	State
2026-04-14	DCP OPERATING CO - NORTHSTAR C.S.	Pass	State
2026-04-14	DCP OPERATING CO - NORTHSTAR C.S.	Pass	State
2026-04-10	DCP OPERATING CO - ENTERPRISE C.S. — high-priority violation on file	Pass	State
2026-04-10	DCP OPERATING CO - ENTERPRISE C.S. — high-priority violation on file	Pass	State
2026-04-09	WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file	Pass	State
2026-04-09	WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file	Pass	State
2026-04-09	NOBLE ENERGY - Y11 WASTE MANAGEMENT ECON	Pass	State
2026-04-08	WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file	Pass	State
2026-04-08	DCP OPERATING CO - MEWBOURN — high-priority violation on file	Pass	State
2026-04-08	DCP OPERATING CO - MEWBOURN — high-priority violation on file	Pass	State
2026-04-08	WES DJ GATHERING - LATHAM GAS PLANT	Pass	State
2026-04-07	WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file	Pass	State
2026-04-07	DCP OPERATING CO - MEWBOURN — high-priority violation on file	Pass	State
2026-04-07	DCP OPERATING CO - MEWBOURN — high-priority violation on file	Pass	State
2026-04-07	EXTRACTION - TRIPLE CREEK PRODUCTION	Pass	State
2026-04-06	WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file	Pass	State
2026-04-03	WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file	Pass	State
2026-03-26	LEPRINO FOODS COMPANY - GREELEY PLANT	N/A	State
2026-03-26	WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file	Pass	State
2026-03-25	EXTRACTION- MILKSHAKE 31-W / PAVISTMA-N	Pass	State
2026-03-24	EXTRACTION - ICE MAN PRODUCTION FACILITY	Pass	State
2026-03-23	EXTRACTION OIL & GAS - FRYE NORTH	Pass	State
2026-03-23	EXTRACTION OIL & GAS - FRYE NORTH	Pass	State
2026-03-18	COVALENCE DJ, LLC - BIGFOOT 11	Fail	State
2026-03-17	WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file	Pass	State
2026-03-17	EXTRACTION - ARDREY PRODUCTION FACILITY	Pass	State
2026-03-17	EXTRACTION - ARDREY PRODUCTION FACILITY	Pass	State
2026-03-16	WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file	N/A	State
2026-03-11	ROCKY MOUNTAIN MIDSTREAM - AUBURN CS	Pass	State
2026-03-11	ROCKY MOUNTAIN MIDSTREAM - AUBURN CS	Pass	State
2026-03-11	ROCKY MOUNTAIN MIDSTREAM - AUBURN CS	Pass	State
2026-03-10	ROCKY MOUNTAIN MIDSTREAM - AUBURN CS	Pass	State
2026-03-10	ROCKY MOUNTAIN MIDSTREAM - AUBURN CS	Pass	State
2026-03-09	ROCKY MOUNTAIN MIDSTREAM - AUBURN CS	Pass	State
2026-02-23	WES WATTENBURG - CENTRAL OIL STABIL	Pass	State
2026-02-19	PDC ENERGY, INC. - GOLDEN EAGLE HZ	N/A	State
2026-02-18	DCP OPERATING CO - LUCERNE 2 GAS PLANT — high-priority violation on file	Fail	State
2026-02-18	DCP OPERATING CO - LUCERNE 2 GAS PLANT — high-priority violation on file	Fail	State
2026-01-28	DCP OPERATING CO - LUCERNE 2 GAS PLANT — high-priority violation on file	N/A	State
2026-01-22	PDC ENERGY - KODAK NORTH PAD 2&3	Pass	State
2026-01-20	PDC ENERGY, INC. - GOLDEN EAGLE HZ	N/A	State
2026-01-07	NOBLE ENERGY - NCLP AA06, AA07 MAHALO ST — high-priority violation on file	Pass	State

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