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.

What this page shows

This page covers Clean Air Act facilities in the EPA air register with stack tests in Weld county, CO, for 2026. It lists 72 stack tests recorded in 2026.