EPA Air · stack tests by state, industry and year
Hospitals (NAICS 6221): stack tests in Maryland, 2026
- 4Stack 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 2026 at a Maryland source whose primary industry code is NAICS 6221. A facility filing more than one industry code is counted under the first one on its record.
Hospitals (NAICS 6221) in Maryland, other years
Other industries in Maryland, 2026
- Utilities (NAICS 2211) 6
- Pipeline transportation (NAICS 4862) 4
- Nonmetallic mineral product manufacturing (NAICS 3273) 3
- Waste management and remediation (NAICS 5622) 3
Air-emissions stack tests recorded in Maryland, 2026
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2026-07-08 | JOHNS HOPKINS HOSPITAL — high-priority violation on file | BALTIMORE, Baltimore (city), MD | Pass | State |
| 2026-07-02 | UNIVERSITY OF MARYLAND ST. JOSEPH MEDICAL CENTER | TOWSON, Baltimore, MD | Pass | State |
| 2026-02-24 | SHADY GROVE ADVENTIST HOSPITAL | ROCKVILLE, Montgomery, MD | Pass | State |
| 2026-01-07 | SHADY GROVE ADVENTIST HOSPITAL | ROCKVILLE, 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.