EPA Air · stack tests by state and year

Air-emissions stack tests in Colorado, 2020

429Stack tests

A stack test measures what a source actually emits, at the stack, against the limit in its permit. Every stack test below was recorded against a source in Colorado during 2020; one facility can appear more than once, because this is a record of what happened rather than a list of places.

Counties in Colorado, 2020

Colorado, other years

Air-emissions stack tests recorded in Colorado, 2020

Date	Facility	Where	Kind	Agency
2020-02-19	NOBLE ENERGY - ROHN STATE LD09 ECONODE	RAYMER (NEW RAYMER) 10.5 MI. N, Weld, CO	Pass	State
2020-02-18	NOBLE ENERGY - ROHN STATE LD4 ECONODE	RAYMER 11.2 MI. N OF, Weld, CO	Pass	State
2020-02-18	NOBLE ENERGY - ROHN STATE LD4 ECONODE	RAYMER 11.2 MI. N OF, Weld, CO	Pass	State
2020-02-17	SIMCOE - WOLF POINT CENTRAL DELIVERY POINT	LA PLATA COUNTY, La Plata, CO	Pass	U.S. EPA
2020-02-14	CEMEX CONSTRUCTION MATERIALS - LYONS — high-priority violation on file	LYONS AREA, Boulder, CO	Pass	State
2020-02-11	NATURAL SODA LLC	RANGELY 22.5 MI. SE OF, Rio Blanco, CO	Fail	State
2020-02-07	PUBLIC SERV - ROCKY MOUNTAIN ENERGY	HUDSON AREA, Weld, CO	Pass	State
2020-02-07	ROCKY MOUNTAIN MIDSTREAM - MUSTANG CS — high-priority violation on file	LA SALLE 8.4 MI. N OF, Weld, CO	Pass	State
2020-02-07	ROCKY MOUNTAIN MIDSTREAM - MUSTANG CS — high-priority violation on file	LA SALLE 8.4 MI. N OF, Weld, CO	Pass	State
2020-02-07	ROCKY MOUNTAIN MIDSTREAM - MUSTANG CS — high-priority violation on file	LA SALLE 8.4 MI. N OF, Weld, CO	Pass	State
2020-02-07	ROCKY MOUNTAIN MIDSTREAM - MUSTANG CS — high-priority violation on file	LA SALLE 8.4 MI. N OF, Weld, CO	Pass	State
2020-02-06	NOBLE ENERGY - ROHN STATE LD4 ECONODE	RAYMER 11.2 MI. N OF, Weld, CO	Fail	State
2020-02-06	NOBLE ENRGY - WELLS RANCH AE32 ECONODE T	KERSEY 10.1 MI. E OF, Weld, CO	Pass	State
2020-02-04	SUMMIT MIDSTREAM NIOBR - ANGUS COMPR STN	GROVER 8.8 MI. N OF, Weld, CO	Pass	State
2020-02-04	SUMMIT MIDSTREAM NIOBR - ANGUS COMPR STN	GROVER 8.8 MI. N OF, Weld, CO	Pass	State
2020-02-04	SUMMIT MIDSTREAM NIOBR - ANGUS COMPR STN	GROVER 8.8 MI. N OF, Weld, CO	Pass	State
2020-01-29	CEMEX CONSTRUCTION MATERIALS - LYONS — high-priority violation on file	LYONS AREA, Boulder, CO	Pass	State
2020-01-23	NOBLE ENERGY - WELLS RANCH AE20 ECONODE	KERSEY 11.1 MI. NE OF, Weld, CO	Pass	State
2020-01-22	REP PROCESSING LLC - PIERCE GAS PLANT	PIERCE, Weld, CO	Fail	State
2020-01-22	REP PROCESSING LLC - PIERCE GAS PLANT	PIERCE, Weld, CO	Pass	State
2020-01-21	REP PROCESSING LLC - PIERCE GAS PLANT	PIERCE, Weld, CO	Pass	State
2020-01-16	BONANZA CREEK - STATE ANTELOPE CPF O-1	KERSEY 14.0 MI. E OF, Weld, CO	Pass	State
2020-01-16	RED CEDAR GATHERING COMPANY - PONDEROSA COMPRESSOR STATION	DURANGO, La Plata, CO	Pass	State
2020-01-15	ANHEUSER-BUSCH, LLC	FORT COLLINS, Larimer, CO	Pass	State
2020-01-15	BONANZA CREEK - STATE ANTELOPE CPF O-1	KERSEY 14.0 MI. E OF, Weld, CO	Fail	State
2020-01-14	PUBLIC SERVICE CO - DENVER STEAM PLT	DENVER, Denver, CO	Pass	State
2020-01-07	AMRIZE PORTLAND PLANT — high-priority violation on file	FLORENCE 3.8 MI. E OF, Fremont, CO	Pass	State
2020-01-07	AMRIZE PORTLAND PLANT — high-priority violation on file	FLORENCE 3.8 MI. E OF, Fremont, CO	Pass	State
2020-01-02	BONANZA CRK STATE NORTH PLATTE CPF 42-26	KERSEY 7.1 MI. N OF, Weld, CO	Pass	State

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