EPA Air · stack tests by county and year
Air-emissions stack tests in Butler County, Pennsylvania, 2021
- 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 Butler County, Pennsylvania during 2021. 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 Butler County facility page.
Butler County, Pennsylvania, 2021
Air-emissions stack tests in Butler County, other years
Air-emissions stack tests recorded in Butler County, Pennsylvania, 2021
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2021-12-10 | CLEVELAND CLIFFS STEEL CORP/ BUTLER WORKS | Pass | State |
| 2021-10-27 | ONEIDA VALLEY MIDSTRAM LLC/CONSTELLATION COMP STA | Pass | State |
| 2021-10-20 | PINE RUN MIDSTREAM LLC/BICKER COMP STA | Pass | State |
| 2021-10-15 | SONNEBORN INC/PETROLIA PLT | Pass | State |
| 2021-10-08 | MARKWEST LIBERTY BLUESTONE LLC/SARSEN GAS PROC PLT | Pass | State |
| 2021-10-08 | MARKWEST LIBERTY BLUESTONE LLC/SARSEN GAS PROC PLT | Pass | State |
| 2021-10-08 | MTN GATHERING LLC/JEFFERSON COMP STA | Pass | State |
| 2021-10-05 | MTN GATHERING LLC/FORWARD COMP STA | Pass | State |
| 2021-09-24 | SONNEBORN INC/PETROLIA PLT | Pass | State |
| 2021-08-27 | MARKWEST LIBERTY BLUESTONE LLC/TRILLITH COMP STA | Pass | State |
| 2021-08-27 | MARKWEST LIBERTY BLUESTONE LLC/ROYAL OAK COMP STA | Pass | State |
| 2021-08-04 | ARMSTRONG CEMENT & SUPPLY/WINFIELD — high-priority violation on file | Pass | State |
| 2021-08-04 | MARKWEST LIBERTY BLUESTONE LLC/ROYAL OAK COMP STA | Pass | State |
| 2021-07-26 | UGI MORAINE EAST GATHERING LLC/RENICK COMP STA | Pass | State |
| 2021-07-22 | PINE RUN MIDSTREAM LLC/BASS COMP STA | Pass | State |
| 2021-07-01 | ETC NORTHEAST PIPELINE/GALAXY COMP STA | Pass | State |
| 2021-06-21 | CLEVELAND CLIFFS STEEL CORP/ BUTLER WORKS | Pass | State |
| 2021-06-03 | MARKWEST LIBERTY BLUESTONE LLC/BLUESTONE GAS PROC PLT | Pass | State |
| 2021-05-13 | RIVERWEST APPALACHIA MIDSTREAM LLC/CLINTON COMP STA | Pass | State |
| 2021-04-28 | ARMSTRONG CEMENT & SUPPLY/WINFIELD — high-priority violation on file | Pass | State |
| 2021-04-22 | ETC NORTHEAST PIPELINE/GALAXY COMP STA | Pass | State |
| 2021-04-22 | ETC NORTHEAST PIPELINE/GALAXY COMP STA | Fail | State |
| 2021-04-19 | MARKWEST LIBERTY BLUESTONE LLC/BLUESTONE GAS PROC PLT | Pass | State |
| 2021-03-19 | MARKWEST LIBERTY BLUESTONE LLC/BLUESTONE GAS PROC PLT | Pass | State |
| 2021-03-10 | MARKWEST LIBERTY BLUESTONE LLC/VOLL COMP STA | Pass | State |
| 2021-02-23 | PA STATE SYS OF HIGHER ED/SLIPPERY ROCK UNIV PA | Pass | State |
| 2021-01-05 | ARMSTRONG CEMENT & SUPPLY/WINFIELD — high-priority violation on file | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.