EPA Air · stack tests by state and year
Air-emissions stack tests in Pennsylvania, 2024
- 905Stack 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 Pennsylvania during 2024; one facility can appear more than once, because this is a record of what happened rather than a list of places.
Counties in Pennsylvania, 2024
- Susquehanna County 136
- Washington County 66
- Bradford County 54
- Allegheny County 52
- Philadelphia County 44
- Lycoming County 43
- Greene County 40
- Tioga County 37
- Wyoming County 27
- Armstrong County 24
- Butler County 23
- Westmoreland County 19
- Indiana County 18
- Lancaster County 18
- Beaver County 17
- Luzerne County 16
- Delaware County 16
- Montgomery County 16
- Berks County 14
- McKean County 12
- Schuylkill County 12
- Fayette County 12
- Northampton County 10
- York County 10
- Jefferson County 10
- Dauphin County 9
- Mercer County 9
- Clinton County 8
- Lawrence County 8
- Bucks County 8
- Chester County 7
- Montour County 7
- Potter County 7
- Cambria County 6
- Lackawanna County 6
- Juniata County 5
- Erie County 5
- Centre County 5
- Carbon County 5
- Crawford County 5
- Elk County 5
- Cumberland County 4
- Columbia County 4
- Venango County 4
- Blair County 4
- Clarion County 4
- Somerset County 4
- Clearfield County 3
- Warren County 3
- Adams County 3
- Sullivan County 3
- Franklin County 3
- Huntingdon County 3
Pennsylvania, other years
Air-emissions stack tests recorded in Pennsylvania, 2024
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2024-12-31 | LOAN ASSET ISSUER LLC/WEST FINLEY 10 WELL PAD | WEST FINLEY, Washington, PA | Pass | State |
| 2024-12-30 | LOAN ASSET ISSUER LLC/WEST FINLEY 1 WELL PAD | WEST FINLEY, Washington, PA | Pass | State |
| 2024-12-23 | LOAN ASSET ISSUER LLC/WEST FINLEY 6 WELL PAD | WEST FINLEY, Washington, PA | Pass | State |
| 2024-12-23 | LOAN ASSET ISSUER LLC/WEST FINLEY 5 WELL PAD | WEST FINLEY, Washington, PA | Pass | State |
| 2024-12-23 | EXPAND OPERATING LLC/DEER PARK PAD COMP STA | MEHOOPANY, Wyoming, PA | Pass | State |
| 2024-12-19 | WASTE MGMT DSPL SVC /GROWS LDFL | MORRISVILLE, Bucks, PA | Fail | State |
| 2024-12-19 | AMCOR FLEXIBLES NORTH AMER INC/LEBANON | LEBANON, Lebanon, PA | Pass | State |
| 2024-12-19 | ALTA PERFORMANCE MATERIALS US, LLC | PITTSBURGH, Allegheny, PA | Pass | Local |
| 2024-12-18 | APPALACHIA MIDSTREAM SVC LLC/STAGECOACH COMP STA | WYALUSING, Bradford, PA | Pass | State |
| 2024-12-18 | EXPAND OPERATING LLC/RU-20 ROMAN PAD | NEW MILFORD, Susquehanna, PA | Pass | State |
| 2024-12-17 | CRODA INC/DRAKETOWN ROAD | MILL HALL, Clinton, PA | Pass | State |
| 2024-12-17 | PENN COLOR/HATFIELD | HATFIELD, Montgomery, PA | Pass | State |
| 2024-12-17 | APPALACHIA MIDSTREAM SVC LLC/GRANVILLE STA 2 | GRANVILLE SUMMIT, Bradford, PA | Pass | State |
| 2024-12-17 | EQM GATHERING OPCO LLC/MAKO COMP STA | AMWELL, Washington, PA | Pass | State |
| 2024-12-17 | BVK OPERATING LLC/SICKLER COMP STA | TUNKHANNOCK, Wyoming, PA | Pass | State |
| 2024-12-16 | CALPINE BETHLEHEM LLC/BETHLEHEM — high-priority violation on file | BETHLEHEM, Northampton, PA | Pass | State |
| 2024-12-16 | APOLLO RESOURCES LLC CLAWSON COMP STA/INDIANA — high-priority violation on file | BLAIRSVILLE, Indiana, PA | Pass | State |
| 2024-12-16 | DIVERSIFIED PROD MARCHAND COMP STA | INDIANA, Indiana, PA | Pass | State |
| 2024-12-16 | PA TURNPIKE COMM/AKH MAINT FAC | JEANNETTE, Westmoreland, PA | Pass | State |
| 2024-12-13 | TEXAS EASTERN TRANS LP/ENTRIKEN STA | ENTRIKEN, Huntingdon, PA | Pass | State |
| 2024-12-13 | TEXAS EASTERN TRANS LP/ENTRIKEN STA | ENTRIKEN, Huntingdon, PA | Pass | State |
| 2024-12-12 | TEXAS EASTERN TRANS LP/ARMAGH STA | NEW FLORENCE, Indiana, PA | Pass | State |
| 2024-12-12 | SECCRA LDFL/LONDON GROVE TWP | WEST GROVE, Chester, PA | Pass | State |
| 2024-12-12 | SUSQUEHANNA GATHERING CO 1 LLC/CDP 3 | NEW MILFORD, Susquehanna, PA | Pass | State |
| 2024-12-12 | ALLEGHENY ENERGY SUPPLY/SPRINGDALE | PITTSBURGH, Allegheny, PA | Pass | Local |
| 2024-12-11 | TEXAS EASTERN TRANS LP/TE DELMONT COMP STA | GREENSBURG, Westmoreland, PA | Pass | State |
| 2024-12-11 | ROVER PIPELINE LLC/BULGER COMP STA | BULGER, Washington, PA | Pass | State |
| 2024-12-11 | UGI AUBURN GATHERING LLC/NORTHMORELAND COMP STA | DALLAS, Wyoming, PA | Pass | State |
| 2024-12-11 | ALLEGHENY ENERGY SUPPLY/SPRINGDALE | PITTSBURGH, Allegheny, PA | Pass | Local |
| 2024-12-10 | TEXAS EASTERN TRANS LP/WAYNESBURG STA | WAYNESBURG, Greene, PA | Pass | State |
| 2024-12-10 | GREENTREE BOOSTER COMPRESSOR/ BROCKWAY | BROCKWAY, Elk, PA | Pass | State |
| 2024-12-10 | MAINESBURG GS LP/MAINESBURG GATHERING STA | MANSFIELD, Tioga, PA | Fail | State |
| 2024-12-10 | PA GEN ENERGY CO LLC/TRACT 729 COMPRESSOR STATION | WATERVILLE, Lycoming, PA | Pass | State |
| 2024-12-10 | EXPAND OPERATING LLC/STONE BRA PAD | WYALUSING, Bradford, PA | Pass | State |
| 2024-12-09 | GREYLOCK MIDSTREAM LLC/CUMBERLAND HENDERSON COMP STA | CARMICHAELS, Greene, PA | Pass | State |
| 2024-12-08 | REWORLD PLYMOUTH/ PLYMOUTH — high-priority violation on file | CONSHOHOCKEN, Montgomery, PA | Pass | State |
| 2024-12-06 | TEXAS EASTERN TRANS LP/UNIONTOWN STA — high-priority violation on file | LEMONT FURNACE, Fayette, PA | Pass | State |
| 2024-12-06 | ALPACA ENERGY LLC/ELECTRIC GENERATING STA | CANTON, Bradford, PA | Pass | State |
| 2024-12-05 | GREATER HAZLETON JT SEW AUTH/WEST HAZLETON STP — high-priority violation on file | WEST HAZLETON, Luzerne, PA | Pending | State |
| 2024-12-05 | KEYSTONE CONEMAUGH PROJ LLC/KEYSTONE STATION | SHELOCTA, Armstrong, PA | Pass | State |
| 2024-12-05 | KEYSTONE CONEMAUGH PROJ LLC/KEYSTONE STATION | SHELOCTA, Armstrong, PA | Pass | State |
| 2024-12-05 | TEXAS EASTERN TRANS LP/PERULACK STA | EAST WATERFORD, Juniata, PA | Pass | State |
| 2024-12-05 | EQM GATHERING OPCO LLC/WHITES RIDGE DEHY STA | WAYNESBURG, Greene, PA | Pass | State |
| 2024-12-04 | UNITED REFINING CO/WARREN PLT | WARREN, Warren, PA | Pass | State |
| 2024-12-04 | EASTERN GAS TRANS & STORAGE/PUNXSUTAWNEY | PUNXSUTAWNEY, Jefferson, PA | Pass | State |
| 2024-12-04 | TEXAS EASTERN TRANS LP/PERULACK STA | EAST WATERFORD, Juniata, PA | Pass | State |
| 2024-12-04 | RAUSCH CREEK GENERATION LLC/FRAILEY TWP — high-priority violation on file | TREMONT, Schuylkill, PA | Pass | State |
| 2024-12-04 | REGENCY MARCELLUS GAS GATHERING LLC/ HIRKEY COMP STA | TUNKHANNOCK, Wyoming, PA | Pass | State |
| 2024-12-04 | UPPER MORELAND HATBORO JT SEW AUTH/WILLOW GROVE | WILLOW GROVE, Montgomery, PA | Pass | State |
| 2024-12-04 | NFG MIDSTREAM COVINGTON LLC/FULLER 826N WELL PAD | MIDDLEBURY, Tioga, PA | Pass | State |
| 2024-12-04 | NFG MIDSTREAM COVINGTON LLC/KINNAN 845 WELL PAD | MIDDLEBURY, Tioga, PA | Pass | State |
| 2024-12-04 | EXPAND OPERATING LLC/KAUFMANN WELL PAD | NEW ALBANY, Bradford, PA | Pass | State |
| 2024-12-04 | CROSS CONNECT SOLUTIONS | PHILADELPHIA, Philadelphia, PA | Pass | Local |
| 2024-12-04 | CROSS CONNECT SOLUTIONS | PHILADELPHIA, Philadelphia, PA | Pass | Local |
| 2024-12-04 | CROSS CONNECT SOLUTIONS | PHILADELPHIA, Philadelphia, PA | Pass | Local |
| 2024-12-03 | HEIDELBERG MATERIALS US CEMENT LLC/NAZARETH | NAZARETH, Northampton, PA | Pass | State |
| 2024-12-03 | PIN OAK MIDSTREAM LLC/JACKSON CTR COMP STA | JACKSON CENTER, Mercer, PA | Pass | State |
| 2024-12-03 | EASTERN GAS TRANS & STORAGE INC/CENTRE COMP STA | PLEASANT GAP, Centre, PA | Pass | State |
| 2024-12-03 | NFG MIDSTREAM TROUT RUN LLC/TROUT RUN MTN COMP STA | TROUT RUN, Lycoming, PA | Pass | State |
| 2024-12-03 | EXPAND OPERATING LLC/MCENANEY BRA PAD | NEW ALBANY, Bradford, PA | Pass | State |
| 2024-12-02 | REGENCY MARCELLUS GAS GATHERING LLC/QUAKER STATE RD COMP STA | MONTOURSVILLE, Lycoming, PA | Pass | State |
| 2024-12-02 | EXPAND OPERATING LLC/JOEGUSWA WELL PAD | DUSHORE, Sullivan, PA | Pass | State |
| 2024-11-26 | GEISINGER MED CTR/DANVILLE | DANVILLE, Montour, PA | Pass | State |
| 2024-11-26 | CLEMENS FOOD GROUP LLC/HATFIELD PLT — high-priority violation on file | HATFIELD, Montgomery, PA | Pass | State |
| 2024-11-26 | MT JOY WIRE CORP/MT JOY | MOUNT JOY, Lancaster, PA | Pass | State |
| 2024-11-26 | BARRY CALLEBAUT USA LLC/EDDYSTONE | EDDYSTONE, Delaware, PA | Pass | State |
| 2024-11-26 | REGENCY MARCELLUS GAS GATHERING LLC/OGONTZ EAST COMP STA | JERSEY SHORE, Lycoming, PA | Pass | State |
| 2024-11-26 | MATHESON TRI GAS INC/CLEARFIELD CO2 PLT | CLEARFIELD, Clearfield, PA | Pass | State |
| 2024-11-25 | LPR ENERGY LLC/HENRY CLAY MIDSTREAM FAC | MARKLEYSBURG, Fayette, PA | Pass | State |
| 2024-11-21 | COLUMBIA GAS TRANS CORP/WAYNESBURG COMP STA | WAYNESBURG, Greene, PA | Pass | State |
| 2024-11-20 | PA STATE UNIV/UNIV PARK CAMPUS | UNIVERSITY PARK, Centre, PA | Pass | State |
| 2024-11-20 | ARKEMA INC/WEST CHESTER — high-priority violation on file | WEST CHESTER, Chester, PA | Pass | State |
| 2024-11-20 | CRODA INC/DRAKETOWN ROAD | MILL HALL, Clinton, PA | Pass | State |
| 2024-11-20 | EXELON GENERATION CO/SOUTHWARK | PHILADELPHIA, Philadelphia, PA | Pass | Local |
| 2024-11-19 | CHIEF GATHERING LLC/PMG ANNIE WELLPAD | NICHOLSON, Susquehanna, PA | Pass | State |
| 2024-11-18 | EXPAND OPERATING LLC/HOLTAN SUS WELLPAD | MESHOPPEN, Susquehanna, PA | Pass | State |
| 2024-11-18 | EQT ARTEMIS MIDSTREAM LLC/ROGERS COMP STA — high-priority violation on file | NEW KENSINGTON, Westmoreland, PA | Pass | State |
| 2024-11-18 | WCAA UPSTREAM LLC/GRAHAM WELLPAD | DARRAGH, Westmoreland, PA | Pass | State |
| 2024-11-16 | TEXAS EASTERN TRANS LP/PERULACK STA | EAST WATERFORD, Juniata, PA | Pass | State |
| 2024-11-15 | PEOPLES NATURAL GAS CO LLC/ROARING RUN STA | APOLLO, Armstrong, PA | Pass | State |
| 2024-11-14 | ALTOONA TERM DE LLC/ALTOONA | DUNCANSVILLE, Blair, PA | Pass | State |
| 2024-11-14 | UGI AUBURN GATHERING LLC/ MANNING COMPRESSOR LNG STA | MESHOPPEN, Wyoming, PA | Pass | State |
| 2024-11-14 | COTERRA ENERGY INC/HAYNES W PAD 1 | NEW MILFORD, Susquehanna, PA | Pass | State |
| 2024-11-14 | AUSTIN, E. PAD 1 | HOP BOTTOM, Susquehanna, PA | Pass | State |
| 2024-11-14 | US STEEL CORP/IRVIN PLT | WEST MIFFLIN, Allegheny, PA | Pass | Local |
| 2024-11-14 | ADVANSIX (FORMERLY HONEYWELL/FRANKFORD PLT) — high-priority violation on file | PHILADELPHIA, Philadelphia, PA | Pass | Local |
| 2024-11-13 | HEIDELBERG MATERIALS US CEMENT LLC/EVANSVILLE CEMENT PLT & Q — high-priority violation on file | FLEETWOOD, Berks, PA | Pass | State |
| 2024-11-13 | WHEELABRATOR FALLS INC/FALLS TWP — high-priority violation on file | MORRISVILLE, Bucks, PA | Pass | State |
| 2024-11-13 | IRON MOUNTAIN INFORMATION MANAGEMENT LLC/BOYERS | BOYERS, Butler, PA | Pass | State |
| 2024-11-13 | EXCO APPALACHIA MIDSTREAM LLC/SAWMILL COMP STA | KITTANNING, Armstrong, PA | Pass | State |
| 2024-11-13 | LAVAZZA NORTH AMER/EAST GOSHEN TWP — high-priority violation on file | WEST CHESTER, Chester, PA | Pass | State |
| 2024-11-13 | EXPAND OPERATING LLC/NR02 ENDLESS MOUNTAIN WELLPAD | MONTROSE, Susquehanna, PA | Pass | State |
| 2024-11-13 | EXPAND OPERATING LLC/INNES PAD | NEW MILFORD, Susquehanna, PA | Pass | State |
| 2024-11-12 | EXCO APPLACHIA MIDSTREAM LLC/CONFER COMP STA | BURNSIDE TWP, Centre, PA | Pass | State |
| 2024-11-12 | NFG MIDSTREAM COVINGTON LLC/SHAW COMP STA | MAINESBURG, Tioga, PA | Fail | State |
| 2024-11-12 | EQM GATHERING OPCO LLC/MCINTOSH COMP STA | FINLEYVILLE, Washington, PA | Pass | State |
| 2024-11-12 | EXPAND OPERATING LLC/WOOSMAN PAD | NEW MILFORD, Susquehanna, PA | Pass | State |
| 2024-11-12 | BUSIK, J. PAD 1 | MONTROSE, Susquehanna, PA | Pass | State |
| 2024-11-12 | ADVANSIX (FORMERLY HONEYWELL/FRANKFORD PLT) — high-priority violation on file | PHILADELPHIA, Philadelphia, PA | Pass | Local |
| 2024-11-11 | ISA WELL SITE — high-priority violation on file | COGAN STATION, Lycoming, PA | Pass | State |
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Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.