EPA Air · stack tests by county and year
Air-emissions stack tests in Harford County, Maryland, 2025
- 4Stack 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 Harford 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 Harford County facility page.
Harford County, Maryland, 2025
- Inspections 16
Air-emissions stack tests in Harford County, other years
Air-emissions stack tests recorded in Harford County, Maryland, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-11-19 | CONSTELLATION POWER - PERRYMAN POWER PLANT | Pass | State |
| 2025-09-11 | CONSTELLATION POWER - PERRYMAN POWER PLANT | Pass | State |
| 2025-06-10 | HARFORD WASTE DISPOSAL CENTER | Pass | State |
| 2025-05-29 | UPPER CHESAPEAKE MEDICAL CENTER | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.