EPA Air · stack tests by county and year

Air-emissions stack tests in Washington County, Pennsylvania, 2020

60Stack 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 Washington County, Pennsylvania during 2020. 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 Washington County facility page.

Washington County, Pennsylvania, 2020

Air-emissions stack tests in Washington County, other years

Air-emissions stack tests recorded in Washington County, Pennsylvania, 2020

Date	Facility	Kind	Agency
2020-12-18	LOAN ASSET ISSUER LLC/WEST FINLEY 4 WELL PAD	Pass	State
2020-12-14	EQT PROD CO/JT FARM WELLPAD	Pass	State
2020-12-09	UGI GIBRALTAR GATHERING LLC/GIBRALTAR COMP STA	Pass	State
2020-11-03	EQM GATHERING OPCO LLC/MCINTOSH COMP STA	Pass	State
2020-10-30	FLEXSYS AMER LTD PAR/MONONGAHELA — high-priority violation on file	Pass	State
2020-10-26	EQT PROD CO/EALY WELLPAD	Pass	State
2020-10-23	MARKWEST LIBERTY MIDSTREAM & RESOURCES/HARMON CREEK GAS PLT — high-priority violation on file	Pass	State
2020-10-22	MARKWEST LIBERTY MIDSTREAM RES/DOWN HOME COMPRESSOR STATION	Pass	State
2020-10-09	MARKWEST LIBERTY MIDSTREAM/SMITH COMP STA	Pass	State
2020-10-05	MARKWEST LIBERTY MIDSTREAM & RESOURCES/GODWIN COMP STA	Pass	State
2020-10-05	NATL FUEL SUPPLY CORP/BUFFALO COMP STA	Pass	State
2020-10-01	MARKWEST LIBERTY MID & RES / HOSKINS BOOSTER COMP STA	Pass	State
2020-09-30	DYNAMET INC/ARDEN FAC	Fail	State
2020-09-29	MARKWEST LIBERTY MIDSTREAM/WELLING COMP STA	Pass	State
2020-09-28	MARKWEST LIBERTY MIDSTREAM/DRYER BOOSTER COMP STA	Pass	State
2020-09-08	MARKWEST LIBERTY MIDSTREAM/WELLING COMP STA	Pass	State
2020-08-28	MARKWEST LIBERTY MIDSTREAM & RESOURCES/JOHNSTON COMP STA	Pass	State
2020-08-25	MARKWEST LIBERTY MIDSTREAM/ CARPENTER COMP STA	Pass	State
2020-08-19	DIVERSIFIED PROD LLC/NV 34 WELLPAD — high-priority violation on file	Pass	State
2020-08-18	MARKWEST LIBERTY MIDSTREAM & RESOURCES/JOHNSTON COMP STA	Pass	State
2020-08-18	DIVERSIFIED PROD LLC/NINEVEH 58 WELL PAD — high-priority violation on file	Pass	State
2020-08-18	DIVERSIFIED PROD LLC/NV 60 WELLPAD	Pass	State
2020-08-14	MARKWEST LIBERTY M&R/TUPTA DAY COMP STA	Pass	State
2020-08-13	COLUMBIA GAS TRANS CORP/DONEGAL COMP STA	Pass	State
2020-08-13	MARKWEST LIBERTY MIDSTREAM/BRIGICH COMP STA	Pass	State
2020-08-12	CNX MIDSTREAM OPR CO LLC/NV-57 COMP STA	Pass	State
2020-08-11	ROVER PIPELINE LLC/BULGER COMP STA	Pass	State
2020-07-31	MARKWEST LIBERTY MIDSTREAM & RESOURCES/FULTON BOOSTER STA — high-priority violation on file	Pass	State
2020-06-24	EQM GATHERING OPCO LLC/KRYPTONITE COMP STA	Pass	State
2020-06-18	EQM GATHERING OPCO LLC/BLUE MOON COMP STA	Pass	State
2020-06-09	MARKWEST LIBERTY MIDSTREAM & RESOURCES/FULTON BOOSTER STA — high-priority violation on file	Pass	State
2020-05-22	MARKWEST LIBERTY MIDSTREAM/BAKER COMP STA	Pass	State
2020-05-21	MARKWEST LIBERTY MIDSTREAM & RESOURCES/REDD COMP STA	Pass	State
2020-05-20	EQM GATHERING OPCO LLC/TWILIGHT COMP STA	Pass	State
2020-05-20	MARKWEST LIBERTY MIDST & RESOURCES/THREE BROTHERS COMP STA	Pass	State
2020-05-19	MARKWEST LIBERTY MIDSTREAM & RESOURCES/SHAW COMP STA	Pass	State
2020-05-19	EQM GATHERING OPCO LLC/MAKO COMP STA	Pass	State
2020-05-07	MARKWEST LIBERTY MIDSTREAM & RESOURCES/LOWRY COMP STA	Pass	State
2020-05-05	MARKWEST LIBERTY MIDSTREAM/ CARPENTER COMP STA	Pass	State
2020-05-04	MARKWEST LIBERTY MIDST & RESOURCES/THREE BROTHERS COMP STA	Pass	State
2020-04-27	MARKWEST LIBERTY MIDSTREAM & RESOURCES/SHAW COMP STA	Pass	State
2020-04-15	MARKWEST LIBERTY MIDSTREAM & RESOURCES/NANCY STEWART	Pass	State
2020-04-13	MARKWEST LIBERTY MIDSTREAM/BAKER COMP STA	Pass	State
2020-04-09	MARKWEST LIBERTY MIDSTREAM/DRYER BOOSTER COMP STA	Pass	State
2020-04-08	MARKWEST LIBERTY MIDSTREAM/BRIGICH COMP STA	Pass	State
2020-04-07	MARKWEST LIBERTY MIDSTREAM/SMITH COMP STA	Pass	State
2020-04-06	MARKWEST LIBERTY MIDSTREAM/WELLING COMP STA	Pass	State
2020-04-03	MARKWEST LIBERTY MIDSTREAM & RESOURCES/FULTON BOOSTER STA — high-priority violation on file	Pass	State
2020-04-02	EQT PROD CO/MOJO COMPRESSOR UNIT	Pass	State
2020-03-11	DYNAMET INC/ARDEN FAC	Fail	State
2020-03-06	MARKWEST LIBERTY MIDSTREAM & RESOURCES/NANCY STEWART	Pass	State
2020-03-05	MARKWEST LIBERTY MIDSTREAM/WELLING COMP STA	Pass	State
2020-03-04	MARKWEST LIBERTY M&R/TUPTA DAY COMP STA	Pass	State
2020-03-04	LOAN ASSET ISSUER LLC/WEST FINLEY 1 WELL PAD	Pass	State
2020-03-03	MARKWEST LIBERTY MIDSTREAM & RESOURCES/SHAW COMP STA	Pass	State
2020-03-03	MARKWEST LIBERTY MIDSTREAM & RESOURCES/LOWRY COMP STA	Pass	State
2020-03-02	MARKWEST LIBERTY MIDST & RESOURCES/THREE BROTHERS COMP STA	Pass	State
2020-02-26	CNX MIDSTREAM OPR CO LLC/NV-57 COMP STA	Pass	State
2020-01-16	LOAN ASSET ISSUER LLC/WEST FINLEY 10 WELL PAD	Pass	State
2020-01-15	EQM GATHERING OPCO LLC/BLUE MOON COMP STA	Pass	State

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