EPA Air · stack tests by state and year
Air-emissions stack tests in Maryland, 2023
- 49Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Every stack test below was recorded against a source in Maryland during 2023; one facility can appear more than once, because this is a record of what happened rather than a list of places.
Counties in Maryland, 2023
- Anne Arundel County 13
- Harford County 6
- Baltimore (city) County 5
- Calvert County 4
- Prince George's County 4
- Montgomery County 3
Maryland, other years
Air-emissions stack tests recorded in Maryland, 2023
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2023-12-14 | APG-ABERDEEN AREA | ABERDEEN PROVING GROUND, Harford, MD | Pass | State |
| 2023-12-11 | RAVEN POWER FORT SMALLWOOD LLC | CURTIS BAY, Anne Arundel, MD | Pass | State |
| 2023-11-29 | MILLERSVILLE LANDFILL | SEVERN, Anne Arundel, MD | Pass | State |
| 2023-11-28 | MILLERSVILLE LANDFILL | SEVERN, Anne Arundel, MD | Pass | State |
| 2023-11-17 | CURTIS BAY ENERGY, LP — high-priority violation on file | BALTIMORE, Baltimore (city), MD | Fail | State |
| 2023-11-14 | MILLERSVILLE LANDFILL GAS TO ELECTRICITY FACILITY | SEVERN, Anne Arundel, MD | Pass | State |
| 2023-11-14 | CONSTELLATION POWER - PERRYMAN POWER PLANT | ABERDEEN, Harford, MD | Pass | State |
| 2023-10-31 | U.S. COAST GUARD YARD - CURTIS BAY | CURTIS BAY, Anne Arundel, MD | Pass | State |
| 2023-10-19 | MONTGOMERY COUNTY RRF — high-priority violation on file | DICKERSON, Montgomery, MD | Pass | State |
| 2023-10-17 | DOMINION TRANSMISSION, INC | MIDDLETOWN, Frederick, MD | Pass | State |
| 2023-10-12 | LIFOAM INDUSTRIES, LLC | BELCAMP, Harford, MD | Pass | State |
| 2023-10-10 | W. R. GRACE & CO. - CONN. | CURTIS BAY, Baltimore (city), MD | Pass | State |
| 2023-09-28 | CONSTELLATION POWER - PERRYMAN POWER PLANT | ABERDEEN, Harford, MD | Fail | State |
| 2023-09-13 | METTIKI COAL, LLC | OAKLAND, Garrett, MD | Pass | State |
| 2023-09-12 | DOMINION TRANSMISSION, INC | MIDDLETOWN, Frederick, MD | Pass | State |
| 2023-09-08 | RAVEN POWER FORT SMALLWOOD LLC | CURTIS BAY, Anne Arundel, MD | Pass | State |
| 2023-08-24 | RAVEN POWER FORT SMALLWOOD LLC | CURTIS BAY, Anne Arundel, MD | Pass | State |
| 2023-08-15 | AES WARRIOR RUN | CUMBERLAND, Allegany, MD | Pass | State |
| 2023-08-09 | RAVEN POWER FORT SMALLWOOD LLC | CURTIS BAY, Anne Arundel, MD | Pass | State |
| 2023-08-08 | RAVEN POWER FORT SMALLWOOD LLC | CURTIS BAY, Anne Arundel, MD | Pass | State |
| 2023-08-02 | RAVEN POWER FORT SMALLWOOD LLC | CURTIS BAY, Anne Arundel, MD | Pass | State |
| 2023-07-28 | RAVEN POWER FORT SMALLWOOD LLC | CURTIS BAY, Anne Arundel, MD | Pass | State |
| 2023-07-28 | RAVEN POWER FORT SMALLWOOD LLC | CURTIS BAY, Anne Arundel, MD | Pass | State |
| 2023-07-26 | W. R. GRACE & CO. - CONN. | CURTIS BAY, Baltimore (city), MD | Pass | State |
| 2023-07-25 | WILDCAT POINT GENERATION FACILITY | CONOWINGO, Cecil, MD | Pass | State |
| 2023-07-19 | TRANSCONTINENTAL GAS PIPELINE | ELLICOTT CITY, Howard, MD | Pass | State |
| 2023-06-24 | GAYLORD ENTERTAINMENT COMPANY — high-priority violation on file | OXON HILL, Prince George's, MD | Pass | State |
| 2023-06-06 | BUCKEYE TERMINALS, LLC - BALTIMORE TERMINAL | BALTIMORE, Baltimore (city), MD | Pass | State |
| 2023-05-17 | TEXAS EASTERN TRANSMISSION | ACCIDENT, Garrett, MD | Pass | State |
| 2023-05-11 | AMRIZE — high-priority violation on file | HAGERSTOWN, Washington, MD | Pass | State |
| 2023-05-09 | NAVAL SUPPORT FACILITY, INDIAN HEAD — high-priority violation on file | INDIAN HEAD, Charles, MD | Pass | State |
| 2023-04-27 | NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY | GAITHERSBURG, Montgomery, MD | Pass | State |
| 2023-04-13 | CURTIS BAY ENERGY, LP — high-priority violation on file | BALTIMORE, Baltimore (city), MD | Pass | State |
| 2023-04-12 | DOMINION ENERGY COVE POINT LNG, LP | LUSBY, Calvert, MD | Pass | State |
| 2023-03-20 | UNION HOSPITAL | ELKTON, Cecil, MD | Pass | State |
| 2023-03-20 | GAYLORD ENTERTAINMENT COMPANY — high-priority violation on file | OXON HILL, Prince George's, MD | Pass | State |
| 2023-03-19 | AES WARRIOR RUN | CUMBERLAND, Allegany, MD | Pass | State |
| 2023-03-09 | DOMINION ENERGY COVE POINT LNG, LP | LUSBY, Calvert, MD | Fail | State |
| 2023-03-06 | ALPHA RIDGE LANDFILL | MARRIOTTSVILLE, Howard, MD | Pass | State |
| 2023-03-02 | DOMINION ENERGY COVE POINT LNG, LP | LUSBY, Calvert, MD | Pass | State |
| 2023-03-01 | DOMINION ENERGY COVE POINT LNG, LP | LUSBY, Calvert, MD | Pass | State |
| 2023-02-16 | UNIVERSITY OF MARYLAND CAPITAL REGION MEDICAL CENTER | LARGO, Prince George's, MD | Pass | State |
| 2023-02-14 | UNIVERSITY OF MARYLAND ST. JOSEPH MEDICAL CENTER | TOWSON, Baltimore, MD | Pass | State |
| 2023-02-08 | BALTIMORE WASHINGTON MEDICAL CENTER | GLEN BURNIE, Anne Arundel, MD | Pass | State |
| 2023-02-07 | THE GILL CORPORATION - MARYLAND | EDGEWOOD, Harford, MD | Pass | State |
| 2023-02-02 | GSA FEDERAL RESEARCH CENTER AT WHITE OAK | SILVER SPRING, Montgomery, MD | Pass | State |
| 2023-01-24 | EASTON UTILITIES - WASHINGTON STREET | EASTON, Talbot, MD | Pass | State |
| 2023-01-10 | NASA - GODDARD SPACE FLIGHT CENTER | GREENBELT, Prince George's, MD | Pass | State |
| 2023-01-04 | APG-ABERDEEN AREA | ABERDEEN PROVING GROUND, Harford, MD | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.