EPA Air · stack tests by county and year

Air-emissions stack tests in Dewey County, Oklahoma, 2025

23Stack 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 Dewey County, Oklahoma during 2025. 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 Dewey County facility page.

Dewey County, Oklahoma, 2025

Air-emissions stack tests in Dewey County, other years

Air-emissions stack tests recorded in Dewey County, Oklahoma, 2025

Date	Facility	Kind	Agency
2025-07-28	TARGA PIPELINE MIDCONTINENT WESTOK LLC / ROBINSON COMPRESSOR STATION	Pass	State
2025-07-08	TARGA PIPELINE MIDCONTINENT WESTOK LLC / DART COMPRESSOR STATION	Pass	State
2025-06-13	TARGA PIPELINE MIDCONTINENT WESTOK LLC / DART COMPRESSOR STATION	Pass	State
2025-06-13	TARGA PIPELINE MIDCONTINENT WESTOK LLC / DART COMPRESSOR STATION	Pass	State
2025-06-09	TALL OAK MIDCON LLC / PENDLETON COMPRESSOR FACILITY	Pass	State
2025-05-27	ONEOK FIELD SERVICES CO LLC / EAST PUTNAM COMPRESSOR STATION	Pass	State
2025-05-12	CRAWLEY PETROLEUM CORP / GAYLE JAQUITH 1 11MH	Pass	State
2025-05-06	TARGA PIPELINE MIDCONTINENT WESTOK LLC / DART COMPRESSOR STATION	Pass	State
2025-05-05	TARGA PIPELINE MIDCONTINENT WESTOK LLC / ROBINSON COMPRESSOR STATION	Pass	State
2025-05-05	TARGA PIPELINE MIDCONTINENT WESTOK LLC / ROBINSON COMPRESSOR STATION	Pass	State
2025-04-09	TARGA PIPELINE MIDCONTINENT WESTOK LLC / DART COMPRESSOR STATION	Pass	State
2025-04-07	ENLINK MIDSTREAM SERVICES LLC / CHERRY COMPRESSOR STATION	Pass	State
2025-03-28	CRAWLEY PETROLEUM CORP / RHEA 2 33MHX	Pass	State
2025-03-27	CRAWLEY PETROLEUM CORP / HEWITT 1 28MH 1 33MH	Pass	State
2025-03-27	CRAWLEY PETROLEUM CORP / KENNETH 1 34MH	Pass	State
2025-03-05	TARGA PIPELINE MIDCONTINENT WESTOK LLC / ROBINSON COMPRESSOR STATION	Pass	State
2025-02-13	TALL OAK MIDCON LLC / PENDLETON COMPRESSOR FACILITY	Pass	State
2025-02-12	TALL OAK MIDCON LLC / PENDLETON COMPRESSOR FACILITY	Pass	State
2025-02-06	GREAT HORNED OWLS LLC / WALLEYE 1 23HC WALLEYE 2 23HT	Pass	State
2025-02-06	GREAT HORNED OWLS LLC / ROSA 1 24HT	Pass	State
2025-01-09	ONEOK GAS TRANSPORTATION LLC / THUNDER PLAINS COMPRESSOR STATION	Pass	State
2025-01-08	ONEOK GAS TRANSPORTATION LLC / THUNDER PLAINS COMPRESSOR STATION	Pass	State
2025-01-08	ONEOK GAS TRANSPORTATION LLC / THUNDER PLAINS COMPRESSOR STATION	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 Dewey county, OK, for 2025. It lists 23 stack tests recorded in 2025.