EPA Air · stack tests by county and year

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

62Stack 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 Stephens 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 Stephens County facility page.

Stephens County, Oklahoma, 2025

Air-emissions stack tests in Stephens County, other years

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

Date	Facility	Kind	Agency
2025-09-10	TARGA PIPELINE MIDCONTINENT LLC / KETCHUM RANCH COMPRESSOR STATION	Pass	State
2025-09-10	TARGA PIPELINE MIDCONTINENT LLC / KETCHUM RANCH COMPRESSOR STATION	Pass	State
2025-09-09	DCP OPERATING CO LP / SKIPPER COMPRESSOR STATION	Pass	State
2025-09-09	TARGA PIPELINE MIDCONTINENT LLC / KETCHUM RANCH COMPRESSOR STATION	Pass	State
2025-09-09	TARGA PIPELINE MIDCONTINENT LLC / KETCHUM RANCH COMPRESSOR STATION	Pass	State
2025-09-08	DCP OPERATING CO LP / SKIPPER COMPRESSOR STATION	Pass	State
2025-09-08	DCP OPERATING CO LP / SKIPPER COMPRESSOR STATION	Pass	State
2025-09-08	TARGA PIPELINE MIDCONTINENT LLC / KETCHUM RANCH COMPRESSOR STATION	Pass	State
2025-09-08	TARGA PIPELINE MIDCONTINENT LLC / KETCHUM RANCH COMPRESSOR STATION	Pass	State
2025-08-18	CONTINENTAL RESOURCES / RINGER RANCH 2 20 17XHM RINGER RANCH 3	Pass	State
2025-08-07	DCP OPERATING CO LP / SHOLEM GAS PLANT	Pass	State
2025-08-06	DCP OPERATING CO LP / SHOLEM GAS PLANT	Pass	State
2025-08-06	DCP OPERATING CO LP / SHOLEM GAS PLANT	Pass	State
2025-08-05	DCP OPERATING CO LP / SHOLEM GAS PLANT	Pass	State
2025-08-05	DCP OPERATING CO LP / SHOLEM GAS PLANT	Pass	State
2025-08-04	DCP OPERATING CO LP / SHOLEM GAS PLANT	Pass	State
2025-08-04	DCP OPERATING CO LP / SHOLEM GAS PLANT	Pass	State
2025-07-17	FW MIDCON I LLC / CLARENCE 0204 2H 3H 11X MCCLELLAND 020	Pass	State
2025-07-09	CONTINENTAL RESOURCES / PARK PLACE 2 21 16XHM	Pass	State
2025-07-02	DCP OPERATING CO LP / LIGHTNING COMPRESSOR STATION	Pass	State
2025-06-25	FW MIDCON I LLC / WRIGHT 2H 3H 4X VIRGINIA 1H 4X	Pass	State
2025-06-19	BCE MACH LLC / CASSIE ARMOUR 17 20 S1H ALICE TUCKER 1	Pass	State
2025-06-19	BCE MACH LLC / SKEET 17 20 S3H SKEET 17 20 S4H	Pass	State
2025-06-18	BCE MACH LLC / BRYANT 25 24 UW1H	Pass	State
2025-06-18	BCE MACH LLC / CASSIE ARMOUR 17 20 S1H ALICE TUCKER 1	Pass	State
2025-06-17	BCE MACH LLC / BIFFLE 22 15 UW1H	Pass	State
2025-06-17	BCE MACH LLC / BIFFLE 22 15 S1H	Pass	State
2025-06-16	BCE MACH LLC / BIFFLE 22 15 S2H S3H	Pass	State
2025-06-16	BCE MACH LLC / BIFFLE 22 15 S2H S3H	Pass	State
2025-05-27	FW MIDCON I LLC / JARRED 0204 2H 3H 9X	Pass	State
2025-05-22	CONTINENTAL RESOURCES / THE DUKE 0104 23 14 1MXH	Pass	State
2025-05-21	CONTINENTAL RESOURCES / DAUBE 2 22 15 10XHM	Pass	State
2025-05-21	CONTINENTAL RESOURCES / BEARDEN 16 17 12 1 36XHS	Pass	State
2025-04-23	CONTINENTAL RESOURCES / CONNELL 4 13 12 1XHS	Pass	State
2025-04-22	DCP OPERATING CO LP / LIGHTNING COMPRESSOR STATION	Pass	State
2025-04-21	DCP OPERATING CO LP / LIGHTNING COMPRESSOR STATION	Pass	State
2025-04-21	DCP OPERATING CO LP / LIGHTNING COMPRESSOR STATION	Pass	State
2025-04-17	DCP OPERATING CO LP / LIGHTNING COMPRESSOR STATION	Pass	State
2025-04-17	DCP OPERATING CO LP / LIGHTNING COMPRESSOR STATION	Pass	State
2025-04-16	DCP OPERATING CO LP / LIGHTNING COMPRESSOR STATION	Pass	State
2025-04-16	DCP OPERATING CO LP / LIGHTNING COMPRESSOR STATION	Pass	State
2025-04-01	DCP OPERATING CO LP / YELLOW JACKET COMPRESSOR STATION	Pass	State
2025-04-01	DCP OPERATING CO LP / YELLOW JACKET COMPRESSOR STATION	Pass	State
2025-03-31	DCP OPERATING CO LP / YELLOW JACKET COMPRESSOR STATION	Pass	State
2025-03-31	DCP OPERATING CO LP / YELLOW JACKET COMPRESSOR STATION	Pass	State
2025-03-26	DCP OPERATING CO LP / CROSSROADS COMPRESSOR STATION	Pass	State
2025-03-25	CONTINENTAL RESOURCES / CHALFANT 1 7H ROBERT JO 1 8H	Pass	State
2025-03-11	CONTINENTAL RESOURCES / CELESTA 2 5 32XH 3 5 32XH POTEET 12 8	Pass	State
2025-03-03	FW MIDCON I LLC / BRANCH 1H 16	Pass	State
2025-02-25	ONEOK FIELD SERVICES CO LLC / COTTONWOOD COMPRESSOR STATION	Pass	State
2025-02-18	ET GATHERING PROCESSING LLC / TRI COUNTY COMPRESSOR STATION	Pass	State
2025-02-17	FW MIDCON I LLC / MARY J 1H 25X	Pass	State
2025-02-11	ET GATHERING PROCESSING LLC / POTEET COMPRESSOR STATION	Pass	State
2025-02-11	ET GATHERING PROCESSING LLC / POTEET COMPRESSOR STATION	Pass	State
2025-01-29	DCP OPERATING CO LP / CROSSROADS COMPRESSOR STATION	Pass	State
2025-01-29	DCP OPERATING CO LP / CROSSROADS COMPRESSOR STATION	Pass	State
2025-01-28	DCP OPERATING CO LP / CROSSROADS COMPRESSOR STATION	Pass	State
2025-01-28	DCP OPERATING CO LP / CROSSROADS COMPRESSOR STATION	Pass	State
2025-01-27	DCP OPERATING CO LP / CROSSROADS COMPRESSOR STATION	Pass	State
2025-01-08	ET GATHERING PROCESSING LLC / VANARKEL COMPRESSOR STATION	Pass	State
2025-01-07	ET GATHERING PROCESSING LLC / DOYLE COMPRESSOR STATION	Pass	State
2025-01-07	ET GATHERING PROCESSING LLC / DOYLE 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 Stephens county, OK, for 2025. It lists 62 stack tests recorded in 2025.