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 |
|---|---|---|---|---|
| 2024-11-07 | INTER POWER AHLCON LP/COLVER POWER PROJ — high-priority violation on file | COLVER, Cambria, PA | Pass | State |
| 2024-11-07 | SCHUYLKILL ENERGY RES/ST NICHOLAS COGEN — high-priority violation on file | SHENANDOAH, Schuylkill, PA | Pass | State |
| 2024-11-07 | SVP AGGREGATES — high-priority violation on file | ARCHBALD, Lackawanna, PA | Pass | State |
| 2024-11-06 | KIMBERLY CLARK CORP/CHESTER OPR | CHESTER, Delaware, PA | Pass | State |
| 2024-11-06 | ENERGY DEVS HONEY BROOK LLC/CAERNARVON TWP | NARVON, Lancaster, PA | Pass | State |
| 2024-11-05 | PEOPLES GAS CO LLC/KINTER STA | INDIANA, Indiana, PA | Pass | State |
| 2024-11-05 | ENERGEX WOOD PELLET MFG/MIFFLINTOWN — high-priority violation on file | MIFFLINTOWN, Juniata, PA | Fail | State |
| 2024-11-05 | EQM GATHERING OPCO LLC/CALLISTO COMP STA | SYCAMORE, Greene, PA | Pass | State |
| 2024-11-05 | SOUTHWESTERN ENERGY CO/RACINE 5H | NEW MILFORD, Susquehanna, PA | Pass | State |
| 2024-11-04 | EQT MIDSTREAM COMPANY LLC/DEEMSTON WICKS COMP STA | FREDERICKTOWN, Washington, PA | Pass | State |
| 2024-11-04 | CABOT OIL & GAS CORP/KROPA, T. PAD 1 | SPRINGVILLE, Susquehanna, PA | Pass | State |
| 2024-11-04 | PA GEN ENERGY CO LLC/COP TRACT 596 PAD B | ROARING BRANCH, Tioga, PA | Pass | State |
| 2024-11-04 | COTERRA ENERGY INC/ADAMS J PAD 1 | KINGSLEY, Susquehanna, PA | Pass | State |
| 2024-10-31 | NEXTERA RENEWABLE FUELS LLC/FREY FARM CRESWELL LDFL | CONESTOGA, Lancaster, PA | Pass | State |
| 2024-10-31 | NEW ENTERPRISE STONE AND LIME CO INC/JENKINS TWP | WILKES BARRE, Luzerne, PA | Pass | State |
| 2024-10-31 | UGI STORAGE CO/PALMER COMP STA | LAWRENCEVILLE, Tioga, PA | Pass | State |
| 2024-10-31 | SWN PROD CO LLC/GAYLORD 3H | SUSQUEHANNA, Susquehanna, PA | Pass | State |
| 2024-10-31 | USS/CLAIRTON WORKS — high-priority violation on file | CLAIRTON, Allegheny, PA | Fail | Local |
| 2024-10-30 | HEIDELBERG MATERIALS US CEMENT LLC/EVANSVILLE CEMENT PLT & Q — high-priority violation on file | FLEETWOOD, Berks, PA | Pass | State |
| 2024-10-30 | PA GEN ENERGY CO LLC/REED RUN STILL PAD A COMP STA — high-priority violation on file | SMETHPORT, McKean, PA | Pass | State |
| 2024-10-30 | CABOT OIL & GAS CORP/MAKOSKY T PAD 1 | KINGSLEY, Susquehanna, PA | Pass | State |
| 2024-10-30 | EXPAND OPERATING LLC/YVONNE SUS PAD | LAWTON, Susquehanna, PA | Pass | State |
| 2024-10-29 | REGENCY MARCELLUS GAS GATHERING LLC/LONE WALNUT COMP STA | JERSEY SHORE, Lycoming, PA | Pass | State |
| 2024-10-29 | EXPAND OPERATING LLC/MARIS SUS PAD | MESHOPPEN, Susquehanna, PA | Pass | State |
| 2024-10-28 | EXPAND OPERATING LLC/CANNELLA SUS PAD | MONTROSE, Susquehanna, PA | Pass | State |
| 2024-10-26 | ROUNDTOP ENERGY/AUBURN | YARDLEY, Susquehanna, PA | Pass | State |
| 2024-10-25 | GLEN GERY CORP/HANLEY PLANT — high-priority violation on file | SUMMERVILLE, Jefferson, PA | Pass | State |
| 2024-10-25 | ADHESIVES RESEARCH INC/GLEN ROCK — high-priority violation on file | GLEN ROCK, York, PA | Pass | State |
| 2024-10-25 | ASSAI ENERGY LLC - KEYSTONE LANDFILL SITE | DUNMORE, Lackawanna, PA | Pass | State |
| 2024-10-24 | MILAN ENERGY LLC/ELECTRIC GENERATING STATION | MILAN, Bradford, PA | Pass | State |
| 2024-10-24 | BKV OPERATING LLC/BAKER WEST COMPRESSOR STATION | FORREST LAKE TWP, Susquehanna, PA | Pass | State |
| 2024-10-24 | NG ADVANTAGE/SPRINGVILLE — high-priority violation on file | SPRINGVILLE, Susquehanna, PA | Fail | State |
| 2024-10-23 | LANCASTER CNTY SWMA/SUSQ RESOURCE MGMT COMPLEX — high-priority violation on file | HARRISBURG, Dauphin, PA | Pass | State |
| 2024-10-23 | WILLIAMS FIELD SVC CO LLC/KANE ROAD COMP STA | MONTROSE, Susquehanna, PA | Pass | State |
| 2024-10-23 | WILLIAMS FIELD SVC CO LLC/WILCOX COMP STA | TUNKHANNOCK, Wyoming, PA | Pass | State |
| 2024-10-23 | EXPAND OPERATING LLC/BERNARD MCCULLEY WELLPAD | WEST ALEXANDER, Washington, PA | Pass | State |
| 2024-10-23 | ADVANSIX (FORMERLY HONEYWELL/FRANKFORD PLT) — high-priority violation on file | PHILADELPHIA, Philadelphia, PA | Pass | Local |
| 2024-10-22 | ERIE SEWER AUTHORITY/ERIE WWTP — high-priority violation on file | ERIE, Erie, PA | Pending | State |
| 2024-10-22 | PEOPLES NATURAL GAS/EGRY STA | CLARKSBURG, Indiana, PA | Pass | State |
| 2024-10-22 | MAINESBURG GS LP/MAINESBURG GATHERING STA | MANSFIELD, Tioga, PA | Fail | State |
| 2024-10-22 | WILLIAMS FIELD SVC CO LLC/JONES COMP STA | FRIENDSVILLE, Susquehanna, PA | Pass | State |
| 2024-10-22 | NFG MIDSTREAM CLERMONT LLC/CLERMONT EAST COMP STA | WILCOX, McKean, PA | Pass | State |
| 2024-10-22 | CNX MIDSTREAM OPR CO LLC/BUCKLAND COMP STA | WIND RIDGE, Greene, PA | Pass | State |
| 2024-10-22 | EXPAND OPERATING LLC/FERRARO WELL PAD | NEW ALBANY, Bradford, PA | Pass | State |
| 2024-10-21 | MAINESBURG GS LP/WELLS COMP STA | COVINGTON, Tioga, PA | Fail | State |
| 2024-10-18 | PINE RUN MIDSTREAM LLC/BICKER COMP STA | CABOT, Butler, PA | Pass | State |
| 2024-10-17 | LAUREL MTN MIDSTREAM OPR LLC/SPRINGHILL COMP STA | LAKE LYNN, Fayette, PA | Pass | State |
| 2024-10-17 | WILLIAMS FIELD SVC CO LLC/ZICK COMP STA | KINGSLEY, Susquehanna, PA | Pass | State |
| 2024-10-17 | DIVERSIFIED PROD LLC/NV 34 WELLPAD — high-priority violation on file | PROSPERITY, Washington, PA | Pass | State |
| 2024-10-17 | CAREY, R. PAD 1 | KINGSLEY, Susquehanna, PA | Pass | State |
| 2024-10-17 | RUSSO, B. PAD 1 — high-priority violation on file | SPRINGVILLE, Susquehanna, PA | Pass | State |
| 2024-10-17 | WARRINER, S PAD 1 — high-priority violation on file | MONTROSE, Susquehanna, PA | Pass | State |
| 2024-10-16 | KNOUSE FOODS COOP INC/PEACH GLEN TYRONE TWP | PEACH GLEN, Adams, PA | Pass | State |
| 2024-10-16 | HAZLETON HILLER LLC/STOCKTON MOUNTAIN ROAD SITE — high-priority violation on file | HAZLETON, Luzerne, PA | Fail | State |
| 2024-10-16 | EQM GATHERING OPCO LLC/MCINTOSH COMP STA | FINLEYVILLE, Washington, PA | Pass | State |
| 2024-10-16 | DIVERSIFIED PROD LLC/NINEVEH 58 WELL PAD — high-priority violation on file | PROSPERITY, Washington, PA | Pass | State |
| 2024-10-16 | DIVERSIFIED PROD LLC/NV 60 WELLPAD | CLAYSVILLE, Washington, PA | Pass | State |
| 2024-10-16 | EQM GATHERING OPCO LLC/SNAPPING TURTLE COMP STA | WIND RIDGE, Greene, PA | Pass | State |
| 2024-10-16 | MOGRIDGE, C. PAD 1 — high-priority violation on file | SPRINGVILLE, Susquehanna, PA | Pass | State |
| 2024-10-16 | PENNAY, G PAD 1 | KINGSLEY, Susquehanna, PA | Pass | State |
| 2024-10-16 | TSOUROUS, A. PAD 1 | MONTROSE, Susquehanna, PA | Pass | State |
| 2024-10-15 | CONSOL PA COAL CO LLC/BAILEY PREP PLT — high-priority violation on file | WEST FINLEY, Greene, PA | Pass | State |
| 2024-10-15 | SUNOCO MIDSTREAM LLC/MECHANICSBURG | MECHANICSBURG, Cumberland, PA | Pass | State |
| 2024-10-15 | PIONEER CROSSING ENERGY LLC/EXETER | BIRDSBORO, Berks, PA | Pass | State |
| 2024-10-15 | RAG APPLE LLC PAD 1 — high-priority violation on file | MONTROSE, Susquehanna, PA | Pass | State |
| 2024-10-15 | JHHC PAD 1 — high-priority violation on file | MONTROSE, Susquehanna, PA | Pass | State |
| 2024-10-14 | UGI GIBRALTAR GATHERING LLC/GIBRALTAR COMP STA | CLAYSVILLE, Washington, PA | Pass | State |
| 2024-10-11 | LAB ENERGY LLC/DUNCANNON | DUNCANNON, Perry, PA | Pass | State |
| 2024-10-10 | YORK CNTY SOLID WASTE/YORK CNTY RESOURCE RECOVERY — high-priority violation on file | YORK, York, PA | Pass | State |
| 2024-10-10 | ERIE HARD CHROME INC/ERIE — high-priority violation on file | ERIE, Erie, PA | Pass | State |
| 2024-10-10 | ELKHORN GAS PROC LLC/KANE PLT | KANE, McKean, PA | Pass | State |
| 2024-10-10 | DIVERSIFIED MIDSTREAM LLC/TIOGA COMP STA | WELLSBORO, Tioga, PA | Pass | State |
| 2024-10-10 | EM RESOURCES LLC/MONTOUR PLT | DANVILLE, Montour, PA | Pending | State |
| 2024-10-09 | NFG MIDSTREAM CLERMONT LLC/RICH VALLEY COMP STA | EMPORIUM, Cameron, PA | Pass | State |
| 2024-10-08 | MONROE ENERGY LLC/TRAINER — high-priority violation on file | TRAINER, Delaware, PA | Pass | State |
| 2024-10-08 | MARKWEST LIBERTY MIDSTREAM RES/DOWN HOME COMPRESSOR STATION | ROBINSON TWP, Washington, PA | Pass | State |
| 2024-10-08 | GLAXOSMITHKLINE/UPPER MERION BIOPHARM | WEST CONSHOHOCKEN, Montgomery, PA | Pass | State |
| 2024-10-08 | EQM GATHERING OPCO LLC/SNAPPING TURTLE COMP STA | WIND RIDGE, Greene, PA | Pass | State |
| 2024-10-07 | NATL FUEL GAS SUPPLY/ELLISBURG STA | ELLISBURG, Potter, PA | Pass | State |
| 2024-10-04 | UGI AUBURN GATHERING LLC/ MANNING COMPRESSOR LNG STA | MESHOPPEN, Wyoming, PA | Pass | State |
| 2024-10-03 | FAIRMAN CORP/BIG RUN COMP STA | PUNXSUTAWNEY, Jefferson, PA | Pass | State |
| 2024-10-03 | PEPPERIDGE FARM INC/EAST COCALICO TWP PLT | DENVER, Lancaster, PA | Pass | State |
| 2024-10-03 | WALTER R EARLE ASPHALT PLT/MORRISVILLE — high-priority violation on file | MORRISVILLE, Bucks, PA | Pending | State |
| 2024-10-03 | INGENCO WHOLESALE POWER LLC/PINE GROVE TWP | PINE GROVE, Schuylkill, PA | Pass | State |
| 2024-10-03 | US GYPSUM CO/WASHINGTONVILLE PLT — high-priority violation on file | DANVILLE, Montour, PA | Pass | State |
| 2024-10-03 | TENASKA PA PARTNERS/WESTMORELAND GEN FAC — high-priority violation on file | SMITHTON, Westmoreland, PA | Pass | State |
| 2024-10-03 | MARKWEST LIBERTY MIDSTREAM/SMITH COMP STA | BURGETTSTOWN, Washington, PA | Pass | State |
| 2024-10-02 | HEIDELBERG MATERIALS US CEMENT LLC/EVANSVILLE CEMENT PLT & Q — high-priority violation on file | FLEETWOOD, Berks, PA | Pass | State |
| 2024-10-02 | ENERGY TRANSFER MKT & TERM LP/ALTOONA TERMINAL | ALTOONA, Blair, PA | Pass | State |
| 2024-10-02 | BENTON FOUNDRY/BENTON FOUNDRY | BENTON, Columbia, PA | Pass | State |
| 2024-10-02 | DIVERSIFIED PROD CO LLC/STATE GAME LANDS COMP STA | MANONING TOWNSHIP, Armstrong, PA | Pass | State |
| 2024-10-02 | ENERGY DEVS MORGANTOWN LLC/CAERNARVON TWP | MORGANTOWN, Berks, PA | Pass | State |
| 2024-10-02 | PA GEN ENERGY CO LLC/COP TRACT 293 COMP STA | WATERVILLE, Lycoming, PA | Pass | State |
| 2024-10-02 | EXPAND OPERATING LLC/ROSIEMAR SUS PAD | MESHOPPEN, Susquehanna, PA | Pass | State |
| 2024-10-01 | ELLWOOD QUALITY STEELS CO/NEW CASTLE PLT | NEW CASTLE, Lawrence, PA | Pass | State |
| 2024-10-01 | YORK GROUP INC/BLACK BRIDGE RD | YORK, York, PA | Pass | State |
| 2024-10-01 | NFG MIDSTREAM COVINGTON LLC/KRAUSE COMP STA | MAINESBURG, Tioga, PA | Fail | State |
| 2024-10-01 | MARKWEST LIBERTY BLUESTONE LLC/SARSEN GAS PROC PLT | EVANS CITY, Butler, PA | Pass | State |
| 2024-10-01 | HERMITAGE MUNI AUTH/HERMITAGE WPCP | HERMITAGE, Mercer, PA | Pass | State |
| 2024-10-01 | CABOT OIL & GAS CORP/BISHOP, B PAD 1 | SPRINGVILLE, Susquehanna, PA | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.