EPA Air · stack tests by county and year
Air-emissions stack tests in Montgomery County, Pennsylvania, 2026
- 7Stack 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 Montgomery 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 Montgomery County facility page.
Montgomery County, Pennsylvania, 2026
Air-emissions stack tests in Montgomery County, other years
Air-emissions stack tests recorded in Montgomery County, Pennsylvania, 2026
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2026-06-30 | GLAXO SMITHKLINE/UPPER PROVIDENCE — high-priority violation on file | Pass | State |
| 2026-06-09 | MERCK SHARP & DOHME LLC/WEST PT | Pass | State |
| 2026-05-09 | JBS SOUDERTON INC/ALLENTOWN RD | Pass | State |
| 2026-02-26 | KENVUE BRANDS LLC/WHITEMARSH TWP — high-priority violation on file | Pass | State |
| 2026-02-24 | GLAXO SMITHKLINE/UPPER PROVIDENCE — high-priority violation on file | Pass | State |
| 2026-02-18 | JBS SOUDERTON INC/FRANCONIA TWP — high-priority violation on file | Pass | State |
| 2026-01-13 | COLLEGEVILLE HOLDINGS LLC/COLLEGEVILLE | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.