EPA Air · stack tests by county and year
Air-emissions stack tests in Westmoreland County, Pennsylvania, 2025
- 27Stack 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 Westmoreland 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 Westmoreland County facility page.
Westmoreland County, Pennsylvania, 2025
Air-emissions stack tests in Westmoreland County, other years
Air-emissions stack tests recorded in Westmoreland County, Pennsylvania, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-12-16 | PA TURNPIKE COMM/AKH MAINT FAC | Pass | State |
| 2025-11-26 | ATI FLAT ROLLED PRODUCTS HOLDINGS LLC/VANDERGRIFT | Pass | State |
| 2025-11-20 | MSA SAFETY PITTSBURGH MFG LLC/MURRYSVILLE PLT | Pass | State |
| 2025-11-18 | KRIEBEL MINERALS INC/ARMBURST SONY COMPRESSOR | Pass | State |
| 2025-11-17 | EQT ARTEMIS MIDSTREAM LLC/ROGERS COMP STA — high-priority violation on file | Pass | State |
| 2025-10-14 | WCAA UPSTREAM LLC/GRAHAM WELLPAD | Pass | State |
| 2025-10-09 | TEXAS EASTERN TRANS LP/TE DELMONT COMP STA | Pass | State |
| 2025-09-30 | LATROBE SPECIALTY METALS/ A CARPENTER CO | Pass | State |
| 2025-09-08 | WESTMORELAND SANITARY LDFL LLC/BELLE VERNON — high-priority violation on file | Pass | State |
| 2025-09-03 | WESTMORELAND SANITARY LDFL LLC/BELLE VERNON — high-priority violation on file | Fail | State |
| 2025-08-12 | EASTERN GAS TRANS & STORAGE INC/OAKFORD COMPRESSOR STA | Pass | State |
| 2025-07-28 | WCAA MIDSTREAM LLC/WEITZ SOUTH 20 COMP STA | Pass | State |
| 2025-07-24 | LAUREL MTN MIDSTREAM OPR LLC/HERMINIE COMP STA | Pass | State |
| 2025-07-17 | EASTERN GAS TRANS & STORAGE INC/LINCOLN HEIGHTS | Pass | State |
| 2025-07-09 | COLUMBIA GAS TRANS CORP/CGT DELMONT COMP STA | Pass | State |
| 2025-06-26 | EASTERN GAS TRANS & STORAG INC/ROCK SPRINGS COMP STA | Pass | State |
| 2025-06-20 | LATROBE SPECIALTY METALS/ A CARPENTER CO | Pass | State |
| 2025-06-04 | LATROBE SPECIALTY METALS/ A CARPENTER CO | Pass | State |
| 2025-05-28 | EQT ARTEMIS MIDSTREAM LLC/ROGERS COMP STA — high-priority violation on file | Pass | State |
| 2025-05-21 | RW GATHERING LLC/SALEM COMP STA | Pass | State |
| 2025-05-20 | RW GATHERING LLC/ECKER BERGMAN RD COMP STA | Pass | State |
| 2025-04-07 | CNX MIDSTREAM OPR CO LLC/MAMONT COMP STA | Pass | State |
| 2025-03-17 | DIVERSIFIED PROD LLC/BELL POINT COMP STA | Pass | State |
| 2025-03-10 | EASTERN GAS TRANS & STORAGE INC/SOUTH OAKFORD STA | Pass | State |
| 2025-02-04 | OPCO INC/LATROBE | Pass | State |
| 2025-01-29 | TEXAS EASTERN TRANS LP/TE DELMONT COMP STA | Pass | State |
| 2025-01-08 | EASTERN GAS TRANS & STORAGE INC/SOUTH OAKFORD STA | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.