EPA Air · violations by county and year
High-priority air violations in Westmoreland County, Pennsylvania, 2026
- 15Violations
A high-priority violation is the most serious class of Clean Air Act non-compliance an agency records against a source; a federally reportable violation is the next tier below it. Each row below is one violation recorded against a source in Westmoreland County, Pennsylvania during 2026. 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 Westmoreland County facility page.
Westmoreland County, Pennsylvania, 2026
- Inspections 134
- Stack tests 11
High-priority air violations in Westmoreland County, other years
High-priority air violations recorded in Westmoreland County, Pennsylvania, 2026
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2026-07-03 | CLEVELAND CLIFFS MONESSEN COKE LLC/MONESSEN COKE PLT — high-priority violation on file | Earliest FRV determination | State |
| 2026-06-13 | CLEVELAND CLIFFS MONESSEN COKE LLC/MONESSEN COKE PLT — high-priority violation on file | HPV day-zero determination | State |
| 2026-06-02 | DIVERSIFIED PROD LLC/SILVIS COMP STA — high-priority violation on file | Earliest FRV determination | State |
| 2026-05-28 | GREENRIDGE RECLAMATION LLC/E HUNTINGDON — high-priority violation on file | Earliest FRV determination | State |
| 2026-05-15 | PIAD PRECISION CASTING/HEMPFIELD TWP PLT — high-priority violation on file | Earliest FRV determination | State |
| 2026-05-08 | ALUMICORE VENTURES LLC/MONESSEN — high-priority violation on file | Earliest FRV determination | State |
| 2026-04-14 | LIGONIER STONE & LIME CO/SMT EAST SURFACE MINE — high-priority violation on file | Earliest FRV determination | State |
| 2026-04-07 | CHANCE GAS & OIL LLC/UNITY COMPRESSOR SITE — high-priority violation on file | Earliest FRV determination | State |
| 2026-04-06 | LIGONIER STONE & LIME CO/SMT EAST SURFACE MINE — high-priority violation on file | Earliest FRV determination | State |
| 2026-03-27 | EQT ARTEMIS MIDSTREAM LLC/ROGERS COMP STA — high-priority violation on file | Earliest FRV determination | State |
| 2026-03-23 | THREE RIVERS MARINE & RAIL TERM/GIBSONTON MARINE TERMINAL — high-priority violation on file | Earliest FRV determination | State |
| 2026-03-07 | EQT ARTEMIS MIDSTREAM LLC/ROGERS COMP STA — high-priority violation on file | Earliest FRV determination | State |
| 2026-03-06 | LIGONIER STONE & LIME CO/SMT EAST SURFACE MINE — high-priority violation on file | Earliest FRV determination | State |
| 2026-02-25 | SMS MILL SERVICES, LLC — high-priority violation on file | Earliest FRV determination | State |
| 2026-01-08 | ALUMICORE VENTURES LLC/MONESSEN — high-priority violation on file | Earliest FRV determination | State |
Dates as filed by the agency that recorded the violation. Figures from EPA’s ICIS-AIR download.