EPA Air · stack tests by county and year
Air-emissions stack tests in Philadelphia County, Pennsylvania, 2025
- 41Stack tests
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 Philadelphia County, Pennsylvania during 2025. 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 Philadelphia County facility page.
Philadelphia County, Pennsylvania, 2025
Air-emissions stack tests in Philadelphia County, other years
Air-emissions stack tests recorded in Philadelphia County, Pennsylvania, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-11-14 | US MINT/PHILA | Pass | Local |
| 2025-11-13 | US MINT/PHILA | Pass | Local |
| 2025-11-08 | PUROLITE INC/MFG CHEM — high-priority violation on file | Fail | Local |
| 2025-10-01 | CONSTELLATION GENERATION CO/DELAWARE STA | Pass | Local |
| 2025-10-01 | CONSTELLATION GENERATION CO/DELAWARE STA | Pass | Local |
| 2025-09-12 | PUROLITE INC/MFG CHEM — high-priority violation on file | Pending | Local |
| 2025-09-12 | PUROLITE INC/MFG CHEM — high-priority violation on file | Fail | Local |
| 2025-09-11 | PUROLITE INC/MFG CHEM — high-priority violation on file | Pass | Local |
| 2025-08-15 | PUROLITE INC/MFG CHEM — high-priority violation on file | Pending | Local |
| 2025-08-14 | ADVANSIX (FORMERLY HONEYWELL/FRANKFORD PLT) — high-priority violation on file | Pass | Local |
| 2025-08-12 | ADVANSIX (FORMERLY HONEYWELL/FRANKFORD PLT) — high-priority violation on file | Pass | Local |
| 2025-08-12 | PUROLITE INC/MFG CHEM — high-priority violation on file | Pass | Local |
| 2025-08-11 | PUROLITE INC/MFG CHEM — high-priority violation on file | Pending | Local |
| 2025-08-08 | ADVANSIX (FORMERLY HONEYWELL/FRANKFORD PLT) — high-priority violation on file | Pass | Local |
| 2025-08-07 | RIVERSIDE MATERIALS INC/ASPHALT PLT | Pass | Local |
| 2025-08-06 | ADVANSIX (FORMERLY HONEYWELL/FRANKFORD PLT) — high-priority violation on file | Pass | Local |
| 2025-08-05 | ADVANSIX (FORMERLY HONEYWELL/FRANKFORD PLT) — high-priority violation on file | Pass | Local |
| 2025-08-01 | ADVANSIX (FORMERLY HONEYWELL/FRANKFORD PLT) — high-priority violation on file | Pass | Local |
| 2025-07-30 | ADVANSIX (FORMERLY HONEYWELL/FRANKFORD PLT) — high-priority violation on file | Pass | Local |
| 2025-07-30 | ADVANSIX (FORMERLY HONEYWELL/FRANKFORD PLT) — high-priority violation on file | Pass | Local |
| 2025-06-10 | DIETZ & WATSON INC/PHILA | Pass | Local |
| 2025-06-04 | NORTHEAST WPCP/PHILA — high-priority violation on file | Pass | Local |
| 2025-06-04 | NORTHEAST WPCP/PHILA — high-priority violation on file | Pass | Local |
| 2025-06-03 | NORTHEAST WPCP/PHILA — high-priority violation on file | Pass | Local |
| 2025-05-23 | CONSTELLATION GENERATION CO/SCHUYLKILL STA | Pass | Local |
| 2025-05-22 | CONSTELLATION GENERATION CO/SCHUYLKILL STA | Pass | Local |
| 2025-05-08 | SOUTHEASTERN PENNSYLVANIA TRANSPORTATION — high-priority violation on file | Pass | Local |
| 2025-05-08 | SOUTHEASTERN PENNSYLVANIA TRANSPORTATION — high-priority violation on file | Pass | Local |
| 2025-04-08 | ADVANSIX (FORMERLY HONEYWELL/FRANKFORD PLT) — high-priority violation on file | Pending | Local |
| 2025-04-03 | SYNAGRO [PHILADELPHIA RENEWABLE BIO-FUELS LLC] — high-priority violation on file | Pass | Local |
| 2025-04-02 | SYNAGRO [PHILADELPHIA RENEWABLE BIO-FUELS LLC] — high-priority violation on file | Pass | Local |
| 2025-04-01 | SYNAGRO [PHILADELPHIA RENEWABLE BIO-FUELS LLC] — high-priority violation on file | Pass | Local |
| 2025-03-20 | ADVANSIX (FORMERLY HONEYWELL/FRANKFORD PLT) — high-priority violation on file | Pass | Local |
| 2025-03-06 | PHILA GAS WORKS/RICHMOND PLT — high-priority violation on file | Pass | Local |
| 2025-02-27 | FRONTIDA BIOPHARM INC (FORMERLY MUTUAL PHARMACEUTICAL INC) | Pass | Local |
| 2025-02-25 | COMMANDER NAVY REGION MIDATLANTIC/HOST S | Pass | Local |
| 2025-02-19 | FRONTIDA BIOPHARM INC (FORMERLY MUTUAL PHARMACEUTICAL INC) | Pass | Local |
| 2025-02-12 | GRAYS FERRY COGEN PARTNERSHIP/PHILA — high-priority violation on file | Pass | Local |
| 2025-01-30 | VICINITY ENERGY EDISON/PHILA — high-priority violation on file | Pass | Local |
| 2025-01-29 | VICINITY ENERGY EDISON/PHILA — high-priority violation on file | Pass | Local |
| 2025-01-28 | VICINITY ENERGY EDISON/PHILA — high-priority violation on file | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.