EPA Air · violations by state and year

High-priority air violations in Colorado, 2026

20Violations

A high-priority violation is the most serious class of Clean Air Act non-compliance an agency records against a source; a federally reportable violation is the next tier below it. Every violation below was recorded against a source in Colorado during 2026; one facility can appear more than once, because this is a record of what happened rather than a list of places.

Counties in Colorado, 2026

Colorado, other years

High-priority air violations recorded in Colorado, 2026

Date	Facility	Where	Kind	Agency
2026-07-21	1876 RESOURCES - OLANDER PAD — high-priority violation on file	MEAD AREA, Weld, CO	Earliest FRV determination	State
2026-06-18	HORAN & MCCONATY - FEDERAL CREMATORY — high-priority violation on file	DENVER, Denver, CO	Earliest FRV determination	State
2026-05-20	CHECKERS INDUSTRIAL - CHECKERS SAFETY GR — high-priority violation on file	BROOMFIELD, Broomfield, CO	Earliest FRV determination	State
2026-05-12	COORSTEK INC - CLEAR CREEK VALLEY PLANT — high-priority violation on file	GOLDEN AREA, Jefferson, CO	Earliest FRV determination	State
2026-05-06	DCP OPERATING CO - LUCERNE 2 GAS PLANT — high-priority violation on file	GREELEY AREA, Weld, CO	HPV day-zero determination	State
2026-04-20	SUMMIT DJ-S - JACKSON LAKE GAS PLANT — high-priority violation on file	WELDONA, Morgan, CO	Earliest FRV determination	State
2026-04-14	CRESTONE PEAK - MUSTANG BOOSTER STATION — high-priority violation on file	AURORA, Adams, CO	Earliest FRV determination	State
2026-03-10	GMT EXPLORATION - RAGGED 6-64 4 PAD — high-priority violation on file	ELIZABETH AREA, Elbert, CO	Earliest FRV determination	State
2026-02-25	EXTRACTION OIL & GAS - WAKE NORTH PRODUC — high-priority violation on file	GREELEY AREA, Weld, CO	Earliest FRV determination	State
2026-02-20	MULL DRILLING CO. - BRAUKMANN FARMS C — high-priority violation on file	HUGO 11.7 MI. SE OF, Lincoln, CO	Earliest FRV determination	State
2026-02-19	AUSCO PETROLEUM - LAKE/PAIUTE 34-29 PAD — high-priority violation on file	COAL CREEK AREA, Fremont, CO	Earliest FRV determination	State
2026-02-19	AUSCO PETROLEUM - MACKINAW / KING 12-28 — high-priority violation on file	FLORENCE AREA, Fremont, CO	Earliest FRV determination	State
2026-02-19	AUSCO PETROLEUM - PATHFINDER #2 PROD FAC — high-priority violation on file	ROCKVALE AREA, Fremont, CO	Earliest FRV determination	State
2026-02-18	WESTERN SLOPE MATERIALS LLC - BLUE PIT — high-priority violation on file	CARBONDALE 2.2 MI. NE OF, Garfield, CO	Earliest FRV determination	State
2026-01-28	AMRIZE PORTLAND PLANT — high-priority violation on file	FLORENCE 3.8 MI. E OF, Fremont, CO	Earliest FRV determination	State
2026-01-21	MULL DRILLING COMPANY-APC BETTY #1-27 19 — high-priority violation on file	BRANDON 12.6 MI. N OF, Cheyenne, CO	Earliest FRV determination	State
2026-01-21	MULL DRILLING-APC DOUG CRUDE OIL TANK — high-priority violation on file	CHEYENNE WELLS 11.9 MI. S OF, Cheyenne, CO	Earliest FRV determination	State
2026-01-21	HILCORP ENERGY - LION GOVERNMENT 33-36 — high-priority violation on file	MAYBELL 43.3 MI. N OF, Moffat, CO	Earliest FRV determination	State
2026-01-20	ROSELAWN CEMETERY ASSOCIATION — high-priority violation on file	PUEBLO AREA, Pueblo, CO	Earliest FRV determination	State
2026-01-14	COLORADO INTERSTATE GAS CO - CHEYENNE CS — high-priority violation on file	NUNN 14.8 MI. N OF, Weld, CO	Earliest FRV determination	State

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