EPA Air · stack tests by state, industry and year
Utilities (NAICS 2211): stack tests in Maryland, 2025
- 12Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Each row is one stack test recorded during 2025 at a Maryland source whose primary industry code is NAICS 2211. A facility filing more than one industry code is counted under the first one on its record.
Utilities (NAICS 2211) in Maryland, other years
Other industries in Maryland, 2025
- Waste management and remediation (NAICS 5622) 11
- Pipeline transportation (NAICS 4862) 7
- Hospitals (NAICS 6221) 4
- Nonmetallic mineral product manufacturing (NAICS 3273) 4
- Food manufacturing (NAICS 3118) 3
Air-emissions stack tests recorded in Maryland, 2025
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2025-12-08 | EASTON UTILITIES - AIRPORT PARK | EASTON, Talbot, MD | Pass | State |
| 2025-12-04 | EASTON UTILITIES - WASHINGTON STREET | EASTON, Talbot, MD | Pass | State |
| 2025-11-19 | CONSTELLATION POWER - PERRYMAN POWER PLANT | ABERDEEN, Harford, MD | Pass | State |
| 2025-11-18 | MILLERSVILLE LANDFILL GAS TO ELECTRICITY FACILITY | SEVERN, Anne Arundel, MD | Pass | State |
| 2025-09-12 | CPV MARYLAND, LLC - ST. CHARLES PROJECT | WALDORF, Charles, MD | Pass | State |
| 2025-09-11 | CONSTELLATION POWER - PERRYMAN POWER PLANT | ABERDEEN, Harford, MD | Pass | State |
| 2025-07-23 | RAVEN POWER FORT SMALLWOOD LLC | CURTIS BAY, Anne Arundel, MD | Pass | State |
| 2025-07-17 | RAVEN POWER FORT SMALLWOOD LLC | CURTIS BAY, Anne Arundel, MD | Pass | State |
| 2025-07-09 | WILDCAT POINT GENERATION FACILITY | CONOWINGO, Cecil, MD | Pass | State |
| 2025-04-23 | PSEG KEYS ENERGY CENTER | BRANDYWINE, Prince George's, MD | Pass | State |
| 2025-01-31 | CHALK POINT POWER, LLC | AQUASCO, Prince George's, MD | Pass | State |
| 2025-01-29 | DICKERSON POWER, LLC | DICKERSON, Montgomery, MD | Pass | State |
Primary NAICS code as filed on the facility record; dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.