EPA Air · stack tests by county and year
Air-emissions stack tests in Montgomery County, Maryland, 2025
- 6Stack 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, Maryland 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 Montgomery County facility page.
Montgomery County, Maryland, 2025
- Inspections 15
Air-emissions stack tests in Montgomery County, other years
Air-emissions stack tests recorded in Montgomery County, Maryland, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-12-23 | MONTGOMERY COUNTY RRF — high-priority violation on file | Fail | State |
| 2025-12-08 | GSA FEDERAL RESEARCH CENTER AT WHITE OAK | Pass | State |
| 2025-09-25 | MONTGOMERY COUNTY RRF — high-priority violation on file | Fail | State |
| 2025-09-25 | MONTGOMERY COUNTY RRF — high-priority violation on file | Pass | State |
| 2025-03-12 | ADVENTIST HEALTH CARE WHITE OAK MEDICAL CENTER | Pass | State |
| 2025-01-29 | DICKERSON POWER, LLC | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.