Velarion Records

EPA Air · stack tests by county and year

Air-emissions stack tests in Washington County, Pennsylvania, 2024

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 2024. 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, 2024

Air-emissions stack tests in Washington County, other years

Air-emissions stack tests recorded in Washington County, Pennsylvania, 2024

DateFacilityKindAgency
2024-12-31LOAN ASSET ISSUER LLC/WEST FINLEY 10 WELL PADPassState
2024-12-30LOAN ASSET ISSUER LLC/WEST FINLEY 1 WELL PADPassState
2024-12-23LOAN ASSET ISSUER LLC/WEST FINLEY 6 WELL PADPassState
2024-12-23LOAN ASSET ISSUER LLC/WEST FINLEY 5 WELL PADPassState
2024-12-17EQM GATHERING OPCO LLC/MAKO COMP STAPassState
2024-12-11ROVER PIPELINE LLC/BULGER COMP STAPassState
2024-11-12EQM GATHERING OPCO LLC/MCINTOSH COMP STAPassState
2024-11-04EQT MIDSTREAM COMPANY LLC/DEEMSTON WICKS COMP STAPassState
2024-10-23EXPAND OPERATING LLC/BERNARD MCCULLEY WELLPADPassState
2024-10-17DIVERSIFIED PROD LLC/NV 34 WELLPAD — high-priority violation on filePassState
2024-10-16EQM GATHERING OPCO LLC/MCINTOSH COMP STAPassState
2024-10-16DIVERSIFIED PROD LLC/NINEVEH 58 WELL PAD — high-priority violation on filePassState
2024-10-16DIVERSIFIED PROD LLC/NV 60 WELLPADPassState
2024-10-14UGI GIBRALTAR GATHERING LLC/GIBRALTAR COMP STAPassState
2024-10-08MARKWEST LIBERTY MIDSTREAM RES/DOWN HOME COMPRESSOR STATIONPassState
2024-10-03MARKWEST LIBERTY MIDSTREAM/SMITH COMP STAPassState
2024-09-19MARKWEST LIBERTY MIDSTREAM & RESOURCES/GODWIN COMP STAPassState
2024-09-12EXPAND OPERATING LLC/JOHN MCMURRAY WELLPADPassState
2024-09-11MARKWEST LIBERTY MID & RES / HOSKINS BOOSTER COMP STAPassState
2024-08-28EQM GATHERING OPCO LLC/STEELHEAD COMP STAPassState
2024-08-22MARKWEST LIBERTY MIDSTREAM/WELLING COMP STAPassState
2024-08-15CNX MIDSTREAM OPR CO LLC/NV-57 COMP STAPassState
2024-07-22EQM GATHERING OPCO LLC/TWILIGHT COMP STAPassState
2024-07-19COLUMBIA GAS TRANS CORP/DONEGAL COMP STAPassState
2024-07-18MARKWEST LIBERTY MIDSTREAM/WELLING COMP STAPassState
2024-07-17MARKWEST LIBERTY MIDSTREAM/ CARPENTER COMP STAPassState
2024-07-17MARKWEST LIBERTY MIDSTREAM & RESOURCES/HARMON CREEK GAS PLT — high-priority violation on filePassState
2024-07-16MARKWEST LIBERTY MIDSTREAM & RESOURCES/JOHNSTON COMP STAPassState
2024-07-10EQM GATHERING OPCO LLC/BLUE MOON COMP STAPassState
2024-06-25EQM GATHERING OPCO LLC/MAKO COMP STAPassState
2024-06-20LOAN ASSET ISSUER LLC/WEST FINLEY 10 WELL PADPassState
2024-06-19LOAN ASSET ISSUER LLC/WEST FINLEY 5 WELL PADPassState
2024-06-18LOAN ASSET ISSUER LLC/WEST FINLEY 1 WELL PADPassState
2024-06-04EQM GATHERING OPCO LLC/PISCES COMP STAPassState
2024-05-29EQM GATHERING OPCO LLC/PISCES COMP STAPassState
2024-05-24GOLDEN EAGLE CONST CO/EIGHTY FOUR PLTPassState
2024-05-16ARDEN LDFL/CHARTIERS TWPPassState
2024-05-15MARKWEST LIBERTY MIDSTREAM & RESOURCES/REDD COMP STAPassState
2024-04-30MARKWEST LIBERTY MIDSTREAM/ CARPENTER COMP STAPassState
2024-04-29MARKWEST LIBERTY MIDSTREAM & RESOURCES/LOWRY COMP STAPassState
2024-04-24EQM GATHERING OPCO LLC/TWILIGHT COMP STAPassState
2024-04-23UGI GIBRALTAR GATHERING LLC/GIBRALTAR COMP STAPassState
2024-04-17USA SOUTH HILLS LDFL/ UNION TWPPassState
2024-04-17MARKWEST LIBERTY MIDSTREAM & RESOURCES/SHAW COMP STAPassState
2024-04-16MARKWEST LIBERTY MIDST & RESOURCES/THREE BROTHERS COMP STAPassState
2024-04-04MARKWEST LIBERTY MIDSTREAM & RESOURCES/NANCY STEWARTPassState
2024-04-03MARKWEST LIBERTY MIDSTREAM/DRYER BOOSTER COMP STAPassState
2024-04-03EQM GATHERING OPCO LLC/KRYPTONITE COMP STAPassState
2024-04-02MARKWEST LIBERTY MIDSTREAM/BRIGICH COMP STAPassState
2024-04-01MARKWEST LIBERTY M&R/TUPTA DAY COMP STAPassState
2024-03-28MARKWEST LIBERTY MIDSTREAM/SMITH COMP STAPassState
2024-03-27MARKWEST LIBERTY MIDSTREAM/WELLING COMP STAPassState
2024-03-26MARKWEST LIBERTY MIDSTREAM/BAKER COMP STAPassState
2024-03-26EQT PROD CO/MOJO COMPRESSOR UNITPassState
2024-03-21MARKWEST LIBERTY MIDSTREAM & RESOURCES/FULTON BOOSTER STA — high-priority violation on filePassState
2024-03-01MARKWEST LIBERTY MIDSTREAM/TIMBERLAKE COMP STAPassState
2024-02-29MARKWEST LIBERTY MIDSTREAM & RESOURCES/SHAW COMP STAPassState
2024-02-28MARKWEST LIBERTY MIDSTREAM & RESOURCES/LOWRY COMP STAPassState
2024-02-27MARKWEST LIBERTY MIDSTREAM/WELLING COMP STAPassState
2024-02-26MARKWEST LIBERTY MIDSTREAM & RESOURCES/NANCY STEWARTPassState
2024-02-21MARKWEST LIBERTY MIDST & RESOURCES/THREE BROTHERS COMP STAPassState
2024-02-20MARKWEST LIBERTY M&R/TUPTA DAY COMP STAPassState
2024-02-14MARKWEST LIBERTY MIDSTREAM/TIMBERLAKE COMP STAPassState
2024-02-02K PETROLEUM INC/HACKETT COMP STA — high-priority violation on fileFailState
2024-01-16EQUITRANS LP/GINGER HILL SITEPassState
2024-01-11EQM GATHERING OPCO LLC/BLUE MOON COMP STAPassState

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 Washington county, PA, for 2024. It lists 66 stack tests recorded in 2024.