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 |
|---|---|---|---|---|
| 2024-04-25 | NRG POWER MIDWEST L.P../BRUNOT ISLE POWE | PITTSBURGH, Allegheny, PA | Pass | Local |
| 2024-04-24 | EQM GATHERING OPCO LLC/TWILIGHT COMP STA | DAISYTOWN, Washington, PA | Pass | State |
| 2024-04-24 | NFG MIDSTREAM CLERMONT LLC/CLERMONT WEST COMP STA | EMPORIUM, Elk, PA | Pass | State |
| 2024-04-24 | P&G 2 WELL SITE | TUNKHANNOCK, Wyoming, PA | Pass | State |
| 2024-04-24 | BUCKEYE PIPE LINE CO/CORAOPOLIS | MOON, Allegheny, PA | Pass | Local |
| 2024-04-24 | NRG POWER MIDWEST L.P../BRUNOT ISLE POWE | PITTSBURGH, Allegheny, PA | Pass | Local |
| 2024-04-23 | LAUREL MTN MIDSTREAM OPR LLC/BROWN COMP STA | GREENSBORO, Greene, PA | Pass | State |
| 2024-04-23 | UGI GIBRALTAR GATHERING LLC/GIBRALTAR COMP STA | CLAYSVILLE, Washington, PA | Pass | State |
| 2024-04-23 | COTERRA ENERGY INC/ANDERSON R PAD 1 — high-priority violation on file | MESHOPPEN, Susquehanna, PA | Pass | State |
| 2024-04-23 | COTERRA ENERGY INC/LAMBERT R PAD 1 | KINGSLEY, Susquehanna, PA | Pass | State |
| 2024-04-23 | NRG POWER MIDWEST L.P../BRUNOT ISLE POWE | PITTSBURGH, Allegheny, PA | Pass | Local |
| 2024-04-22 | UGI TEXAS CREEK LLC/MARSHLAND 815 COMP STA | GAINES, Tioga, PA | Pass | State |
| 2024-04-22 | EQM GATHERING OPCO LLC/STROSNIDER DEHY & MASTER METER FAC | WAYNESBURG, Greene, PA | Pass | State |
| 2024-04-19 | ARCONIC US LLC/LANCASTER — high-priority violation on file | LANCASTER, Lancaster, PA | Fail | State |
| 2024-04-18 | TEXAS EASTERN TRANS LP/SHERMANS DALE | SHERMANS DALE, Perry, PA | Pass | State |
| 2024-04-18 | EQM GATHERING OPCO LLC/EUROPA COMP STA | CENTER, Greene, PA | Pass | State |
| 2024-04-18 | EXPAND OPERATING LLC/LU-06 FLICKS RUN EAST WELL PAD | TROUT RUN, Lycoming, PA | Pass | State |
| 2024-04-18 | COTERRA ENERGY INC/LAMBERT R PAD 1 | KINGSLEY, Susquehanna, PA | Pass | State |
| 2024-04-18 | LIPPINCOTT, F. PAD 1 — high-priority violation on file | KINGSLEY, Susquehanna, PA | Pass | State |
| 2024-04-18 | KELLY RUN SANI/MSW LDFL | ELIZABETH, Allegheny, PA | Pass | Local |
| 2024-04-17 | TEXAS EASTERN TRANS LP/ARMAGH STA | NEW FLORENCE, Indiana, PA | Pass | State |
| 2024-04-17 | TEXAS EASTERN TRANS LP/ENTRIKEN STA | ENTRIKEN, Huntingdon, PA | Pass | State |
| 2024-04-17 | USA SOUTH HILLS LDFL/ UNION TWP | SOUTH PARK, Washington, PA | Pass | State |
| 2024-04-17 | MARKWEST LIBERTY MIDSTREAM & RESOURCES/SHAW COMP STA | WASHINGTON, Washington, PA | Pass | State |
| 2024-04-17 | NFG MIDSTREAM COVINGTON LLC/STOCK 144 COMP STA | WELLSBORO, Tioga, PA | Fail | State |
| 2024-04-17 | NFG MIDSTREAM COVINGTON LLC/STOCK 144 COMP STA | WELLSBORO, Tioga, PA | Fail | State |
| 2024-04-17 | REGENCY MARCELLUS GAS GATHERING LLC/POORMAN COMP STA | LOCK HAVEN, Clinton, PA | Pass | State |
| 2024-04-17 | GRIFFITHS, J. PAD 1 | MONTROSE, Susquehanna, PA | Pass | State |
| 2024-04-17 | BENEDIKT, K. PAD 1 | MONTROSE, Susquehanna, PA | Pass | State |
| 2024-04-16 | GLAXO SMITHKLINE/UPPER PROVIDENCE — high-priority violation on file | COLLEGEVILLE, Montgomery, PA | Pass | State |
| 2024-04-16 | TEXAS EASTERN TRANS LP/LILLY STA | LILLY, Cambria, PA | Pass | State |
| 2024-04-16 | DIVERSIFIED PROD LLC PINETON COMP STA | COMMODORE, Indiana, PA | Pass | State |
| 2024-04-16 | NFG MIDSTREAM COVINGTON LLC/NETTERMAN COMP STA | WELLSBORO, Tioga, PA | Fail | State |
| 2024-04-16 | EQM GATHERING OPCO LLC/TERRA COMP STA | PLUM CREEK, Armstrong, PA | Pass | State |
| 2024-04-16 | MARKWEST LIBERTY MIDST & RESOURCES/THREE BROTHERS COMP STA | BURGETTSTOWN, Washington, PA | Pass | State |
| 2024-04-16 | DIVERSIFIED PROD/PINETON XTO COMP STA | COMMODORE, Indiana, PA | Pass | State |
| 2024-04-16 | CNX MIDSTREAM OPR CO LLC/BUCKLAND COMP STA | WIND RIDGE, Greene, PA | Pass | State |
| 2024-04-16 | CABOT OIL & GAS CORP/TEDDICK, M. PAD 1 | KINGSLEY, Susquehanna, PA | Pass | State |
| 2024-04-16 | CABOT OIL & GAS CORP/FOLTZ J PAD 1 | HOP BOTTOM, Susquehanna, PA | Pass | State |
| 2024-04-15 | NATL FUEL GAS SUPPLY CORP/ROYSTONE COMP STA | SHEFFIELD, Warren, PA | Pass | State |
| 2024-04-15 | EXPAND OPERATING LLC/ALVAREZ BRA WELL PAD | LACEYVILLE, Bradford, PA | Pass | State |
| 2024-04-15 | CABOT OIL & GAS CORP/JEFFERS FARMS PAD 5 | GIBSON, Susquehanna, PA | Pass | State |
| 2024-04-15 | EXPAND OPERATING LLC/SIVERS BRA PAD | LACEYVILLE, Bradford, PA | Pass | State |
| 2024-04-12 | JKLM ENERGY LLC/REESE HOLLOW 117 WELL PAD | COUDERSPORT, Potter, PA | Pass | State |
| 2024-04-12 | NEXTERA RENEWABLE FUELS LLC/WESTERN BERKS LDFL | BIRDSBORO, Berks, PA | Pass | State |
| 2024-04-11 | PERDUE AGRIBUSINESS LLC/BAINBRIDGE — high-priority violation on file | MARIETTA, Lancaster, PA | Pass | State |
| 2024-04-11 | PERDUE AGRIBUSINESS LLC/BAINBRIDGE — high-priority violation on file | MARIETTA, Lancaster, PA | Pass | State |
| 2024-04-11 | JKLM ENERGY LLC/SWEDEN VALLEY 101 PAD | COUDERSPORT, Potter, PA | Pass | State |
| 2024-04-11 | JKLM ENERGY/SWEDEN VALLEY 105 WELL PAD | COUDERSPORT, Potter, PA | Pass | State |
| 2024-04-10 | BLACKHILL ENERGY LLC/YOUNG COMP STA — high-priority violation on file | COLUMBIA CROSS ROADS, Bradford, PA | Pass | State |
| 2024-04-10 | USS CORP/EDGAR THOMSON WORKS — high-priority violation on file | BRADDOCK, Allegheny, PA | Pass | Local |
| 2024-04-09 | LPR MIDSTREAM PARTNERS LLC/PMG ALLEN STA | ADDISON, Somerset, PA | Pass | State |
| 2024-04-09 | PINE RUN MIDSTREAM LLC/TROUT COMP STA | WORTHINGTON, Armstrong, PA | Pass | State |
| 2024-04-08 | PANTHER CREEK POWER OPR LLC/NESQUEHONING | NESQUEHONING, Carbon, PA | Pass | State |
| 2024-04-08 | DIVERSIFIED PROD LLC/BELL POINT COMP STA | APOLLO, Westmoreland, PA | Pass | State |
| 2024-04-08 | DIVERSIFIED PROD LLC/BROOKVILLE SOUTH COMP STA | BROOKVILLE, Jefferson, PA | Pass | State |
| 2024-04-08 | CNX MIDSTREAM OPR CO LLC/MAMONT COMP STA | APOLLO, Westmoreland, PA | Pass | State |
| 2024-04-05 | AMRIZE CEMENT INC/WHITEHALL PLT — high-priority violation on file | WHITEHALL, Lehigh, PA | Pass | State |
| 2024-04-05 | WILLIAMS FIELD SVC CO LLC/FRASER COMP STA | MONTROSE, Susquehanna, PA | Pass | State |
| 2024-04-05 | UPPER MORELAND HATBORO JT SEW AUTH/WILLOW GROVE | WILLOW GROVE, Montgomery, PA | Pending | State |
| 2024-04-05 | MCCONWAY & TORLEY LLC/STEEL CASTINGS MFG | PITTSBURGH, Allegheny, PA | Pass | Local |
| 2024-04-05 | MCCONWAY & TORLEY LLC/STEEL CASTINGS MFG | PITTSBURGH, Allegheny, PA | Pass | Local |
| 2024-04-04 | AMCOR FLEXIBLES NORTH AMER INC/HAZLETON | HAZLETON, Luzerne, PA | Pass | State |
| 2024-04-04 | JANSSEN RESEARCH & DEVELOPMENT LLC/LOWER GWYNEDD | SPRING HOUSE, Montgomery, PA | Pass | State |
| 2024-04-04 | MARKWEST LIBERTY MIDSTREAM & RESOURCES/NANCY STEWART | MOUNT PLEASANT, Washington, PA | Pass | State |
| 2024-04-04 | WILLIAMS FIELD SVC CO LLC/SHIELDS COMP STA | SPRINGVILLE, Susquehanna, PA | Pass | State |
| 2024-04-04 | BLUESTONE PIPELINE CO/COMFORT LAKE COMP STA | HARMONY TWP, Susquehanna, PA | Pass | State |
| 2024-04-03 | GUTHRIE ROBERT PACKER/SAYRE | SAYRE, Bradford, PA | Pass | State |
| 2024-04-03 | MARKWEST LIBERTY MIDSTREAM/DRYER BOOSTER COMP STA | AVELLA, Washington, PA | Pass | State |
| 2024-04-03 | WILLIAMS FIELD SVC CO LLC/WILCOX COMP STA | TUNKHANNOCK, Wyoming, PA | Pass | State |
| 2024-04-03 | ENERGY TRANSF MKT & TERM LP/MARCUS HOOK TERM — high-priority violation on file | MARCUS HOOK, Delaware, PA | Pass | State |
| 2024-04-03 | BLUESTONE PIPELINE CO/COMFORT LAKE COMP STA | HARMONY TWP, Susquehanna, PA | Pass | State |
| 2024-04-03 | EQM GATHERING OPCO LLC/KRYPTONITE COMP STA | WASHINGTON, Washington, PA | Pass | State |
| 2024-04-02 | LORD CORP/SAEGERTOWN | SAEGERTOWN, Crawford, PA | Pass | State |
| 2024-04-02 | LAUREL MTN MIDSTREAM OPR LLC/DUNBAR COMP STA | DUNBAR, Fayette, PA | Pass | State |
| 2024-04-02 | WILLIAMS FIELD SVC CO LLC/TEEL COMP STA | SPRINGVILLE, Susquehanna, PA | Pass | State |
| 2024-04-02 | MARKWEST LIBERTY MIDSTREAM/BRIGICH COMP STA | CANONSBURG, Washington, PA | Pass | State |
| 2024-04-02 | EXPAND OPERATING LLC/JES BRA WELL PAD | WILMONT, Bradford, PA | Pass | State |
| 2024-04-01 | MARKWEST LIBERTY M&R/TUPTA DAY COMP STA | WASHINGTON, Washington, PA | Pass | State |
| 2024-03-30 | LANCASTER CNTY RRF/ LANCASTER — high-priority violation on file | BAINBRIDGE, Lancaster, PA | Pass | State |
| 2024-03-28 | EASTERN GAS TRANS & STORAGE INC/BOOM STA | LAWRENCEVILLE, Tioga, PA | Pass | State |
| 2024-03-28 | US GYPSUM CO/ALIQUIPPA | ALIQUIPPA, Beaver, PA | Pending | State |
| 2024-03-28 | EPP RENEWABLE ENERGY/NORTHERN TIER LFGTE PLT | WEST BURLINGTON, Bradford, PA | Pass | State |
| 2024-03-28 | MARKWEST LIBERTY MIDSTREAM/SMITH COMP STA | BURGETTSTOWN, Washington, PA | Pass | State |
| 2024-03-28 | HILCORP ENERGY CO/JEFFERSON MONTGOMERY STA | JEFFERSON TOWNSHIP, Mercer, PA | Pass | State |
| 2024-03-28 | APPALACHIAN MIDSTREAM/ FORKSTON INTERCONNECT | FORKSTON, Wyoming, PA | Pass | State |
| 2024-03-27 | ARMSTRONG CEMENT & SUPPLY/WINFIELD — high-priority violation on file | CABOT, Butler, PA | Pass | State |
| 2024-03-27 | CONSOL PA COAL CO LLC/BAILEY PREP PLT — high-priority violation on file | WEST FINLEY, Greene, PA | Pass | State |
| 2024-03-27 | MARKWEST LIBERTY MIDSTREAM/WELLING COMP STA | CLAYSVILLE, Washington, PA | Pass | State |
| 2024-03-27 | SUSQUEHANNA GATHERING CO 1 LLC/CDP 2 | NEW MILFORD, Susquehanna, PA | Pass | State |
| 2024-03-27 | EXPAND OPERATING LLC/MCGAVIN WELL PAD | MESHOPPEN, Susquehanna, PA | Pass | State |
| 2024-03-27 | BOLLES COMPRESSOR STATION/JESSUP TWP | MONTROSE, Susquehanna, PA | Pass | State |
| 2024-03-26 | MARS WRIGLEY US LLC/ELIZABETHTOWN | ELIZABETHTOWN, Lancaster, PA | Pass | State |
| 2024-03-26 | MARKWEST LIBERTY MIDSTREAM/BAKER COMP STA | WASHINGTON, Washington, PA | Pass | State |
| 2024-03-26 | EQT PROD CO/MOJO COMPRESSOR UNIT | WASHINGTON, Washington, PA | Pass | State |
| 2024-03-25 | SCRUBGRASS GENERATING PLT/VENANGO — high-priority violation on file | KENNERDELL, Venango, PA | Pass | State |
| 2024-03-25 | SCRUBGRASS GENERATING PLT/VENANGO — high-priority violation on file | KENNERDELL, Venango, PA | Pass | State |
| 2024-03-25 | EXPAND OPERATING LLC/MASSO SUS PAD | MESHOPPEN, Susquehanna, PA | Pass | State |
| 2024-03-22 | EASTERN SHORE NATURAL GAS CO/DALEVILLE | COCHRANVILLE, Chester, PA | Pass | State |
| 2024-03-22 | HIGHSPIRE TERM DE LLC/HIGHSPIRE TERM | HARRISBURG, Dauphin, PA | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.