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 |
|---|---|---|---|---|
| 2024-01-04 | WILLIAMS FIELD SVC CO LLC/WHITE COMP STA | SPRINGVILLE, Susquehanna, PA | Pass | State |
| 2024-01-03 | CNX MIDSTREAM OPR CO LLC/HOPEWELL STATION | SYCAMORE, Greene, PA | Pass | State |
| 2024-01-02 | DIVERSIFIED PROD LLC/PINE CREEK COMP STA | PINE CREEK TOWNSHIP, Jefferson, PA | Pass | State |
| 2024-01-02 | EXPAND OPERATING LLC/MCENANEY BRA PAD | NEW ALBANY, Bradford, PA | Pass | State |
| 2024-01-02 | EXPAND OPERATING LLC/DEER PARK PAD COMP STA | MEHOOPANY, Wyoming, 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.