EPA Air · stack tests by state and year
Air-emissions stack tests in Maryland, 2021
- 56Stack 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 2021; one facility can appear more than once, because this is a record of what happened rather than a list of places.
Counties in Maryland, 2021
- Anne Arundel County 17
- Baltimore (city) County 13
- Carroll County 4
- Prince George's County 4
- Washington County 3
Maryland, other years
Air-emissions stack tests recorded in Maryland, 2021
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2021-12-18 | AES WARRIOR RUN | CUMBERLAND, Allegany, MD | Pass | State |
| 2021-12-16 | AMRIZE — high-priority violation on file | HAGERSTOWN, Washington, MD | Pass | State |
| 2021-12-16 | AMERICAN SUGAR REFINING | BALTIMORE, Baltimore (city), MD | Pass | State |
| 2021-12-08 | TRANSCONTINENTAL GAS PIPELINE | ELLICOTT CITY, Howard, MD | Pass | State |
| 2021-12-07 | RAVEN POWER FORT SMALLWOOD LLC | CURTIS BAY, Anne Arundel, MD | Pass | State |
| 2021-11-30 | RAVEN POWER FORT SMALLWOOD LLC | CURTIS BAY, Anne Arundel, MD | Pass | State |
| 2021-11-05 | GAYLORD ENTERTAINMENT COMPANY — high-priority violation on file | OXON HILL, Prince George's, MD | Pass | State |
| 2021-11-03 | LEHIGH CEMENT COMPANY - UNION BRIDGE | UNION BRIDGE, Carroll, MD | Pass | State |
| 2021-11-02 | MILLERSVILLE LANDFILL GAS TO ELECTRICITY FACILITY | SEVERN, Anne Arundel, MD | Pass | State |
| 2021-11-02 | DOMINION TRANSMISSION, INC | MIDDLETOWN, Frederick, MD | Pass | State |
| 2021-10-28 | CURTIS BAY ENERGY, LP — high-priority violation on file | BALTIMORE, Baltimore (city), MD | Pass | State |
| 2021-10-16 | PSEG KEYS ENERGY CENTER | BRANDYWINE, Prince George's, MD | Pass | State |
| 2021-10-14 | W. R. GRACE & CO. - CONN. | CURTIS BAY, Baltimore (city), MD | Pass | State |
| 2021-10-13 | METTIKI COAL, LLC | OAKLAND, Garrett, MD | Pass | State |
| 2021-09-24 | AMRIZE — high-priority violation on file | HAGERSTOWN, Washington, MD | Pass | State |
| 2021-09-23 | MONTGOMERY COUNTY RRF — high-priority violation on file | DICKERSON, Montgomery, MD | Pass | State |
| 2021-09-14 | ADELPHI LABORATORY CENTER | ADELPHI, Prince George's, MD | Pass | State |
| 2021-09-02 | RAVEN POWER FORT SMALLWOOD LLC | CURTIS BAY, Anne Arundel, MD | Pass | State |
| 2021-08-25 | GORE, W.L. - CHERRY HILL PLANT — high-priority violation on file | ELKTON, Cecil, MD | Pass | State |
| 2021-08-17 | RAVEN POWER FORT SMALLWOOD LLC | CURTIS BAY, Anne Arundel, MD | Pass | State |
| 2021-08-17 | CENTERS FOR MEDICARE & MEDICAID SERVICES | WINDSOR MILL, Baltimore, MD | Pass | State |
| 2021-08-12 | RAVEN POWER FORT SMALLWOOD LLC | CURTIS BAY, Anne Arundel, MD | Pass | State |
| 2021-08-12 | CITGO/ZENITH PETROLEUM TERMINAL | CURTIS BAY, Baltimore (city), MD | Pass | State |
| 2021-07-30 | CONSTELLATION POWER - PERRYMAN POWER PLANT | ABERDEEN, Harford, MD | Pass | State |
| 2021-07-29 | RAVEN POWER FORT SMALLWOOD LLC | CURTIS BAY, Anne Arundel, MD | Pass | State |
| 2021-07-27 | RAVEN POWER FORT SMALLWOOD LLC | CURTIS BAY, Anne Arundel, MD | Pass | State |
| 2021-07-16 | DOMINION ENERGY COVE POINT LNG, LP | LUSBY, Calvert, MD | Pass | State |
| 2021-07-15 | MOTIVA ENTERPRISES, LLC | CURTIS BAY, Baltimore (city), MD | Pass | State |
| 2021-07-14 | MOTIVA ENTERPRISES, LLC | CURTIS BAY, Baltimore (city), MD | Pass | State |
| 2021-07-13 | MOTIVA ENTERPRISES, LLC | CURTIS BAY, Baltimore (city), MD | Pass | State |
| 2021-06-30 | RAVEN POWER FORT SMALLWOOD LLC | CURTIS BAY, Anne Arundel, MD | Pass | State |
| 2021-06-30 | RAVEN POWER FORT SMALLWOOD LLC | CURTIS BAY, Anne Arundel, MD | Pass | State |
| 2021-06-30 | RAVEN POWER FORT SMALLWOOD LLC | CURTIS BAY, Anne Arundel, MD | Pass | State |
| 2021-06-29 | RAVEN POWER FORT SMALLWOOD LLC | CURTIS BAY, Anne Arundel, MD | Pass | State |
| 2021-06-23 | A & N ELECTRIC COOPERATIVE | EWELL, Somerset, MD | Pass | State |
| 2021-06-21 | W. R. GRACE & CO. - CONN. | CURTIS BAY, Baltimore (city), MD | Pass | State |
| 2021-06-17 | U.S. COAST GUARD YARD - CURTIS BAY | CURTIS BAY, Anne Arundel, MD | Pass | State |
| 2021-06-16 | RAVEN POWER FORT SMALLWOOD LLC | CURTIS BAY, Anne Arundel, MD | Pass | State |
| 2021-06-16 | W. R. GRACE & CO. - CONN. | CURTIS BAY, Baltimore (city), MD | Pass | State |
| 2021-06-02 | UNIVERSITY OF MARYLAND | COLLEGE PARK, Prince George's, MD | Pass | State |
| 2021-05-27 | CURTIS BAY ENERGY, LP — high-priority violation on file | BALTIMORE, Baltimore (city), MD | Pass | State |
| 2021-05-26 | LEHIGH CEMENT COMPANY - UNION BRIDGE | UNION BRIDGE, Carroll, MD | Pass | State |
| 2021-05-21 | WHEELABRATOR BALTIMORE, LP | BALTIMORE, Baltimore (city), MD | Pass | State |
| 2021-05-17 | TEXAS EASTERN TRANSMISSION | ACCIDENT, Garrett, MD | Pass | State |
| 2021-05-06 | AMRIZE — high-priority violation on file | HAGERSTOWN, Washington, MD | Pass | State |
| 2021-05-05 | LEHIGH CEMENT COMPANY - UNION BRIDGE | UNION BRIDGE, Carroll, MD | Pass | State |
| 2021-05-05 | LEHIGH CEMENT COMPANY - UNION BRIDGE | UNION BRIDGE, Carroll, MD | Pass | State |
| 2021-03-31 | CURTIS BAY ENERGY, LP — high-priority violation on file | BALTIMORE, Baltimore (city), MD | Fail | State |
| 2021-03-24 | U.S. COAST GUARD YARD - CURTIS BAY | CURTIS BAY, Anne Arundel, MD | Fail | State |
| 2021-03-16 | UPPER CHESAPEAKE MEDICAL CENTER | BEL AIR, Harford, MD | Pass | State |
| 2021-03-11 | AMRIZE - SPARROWS POINT FACILITY | SPARROWS POINT, Baltimore, MD | Pass | State |
| 2021-03-01 | DOMINION ENERGY COVE POINT LNG, LP | LUSBY, Calvert, MD | Fail | State |
| 2021-02-17 | GORE, W.L. - CHERRY HILL PLANT — high-priority violation on file | ELKTON, Cecil, MD | Pass | State |
| 2021-01-28 | RAVEN POWER FORT SMALLWOOD LLC | CURTIS BAY, Anne Arundel, MD | Pass | State |
| 2021-01-27 | RAVEN POWER FORT SMALLWOOD LLC | CURTIS BAY, Anne Arundel, MD | Pass | State |
| 2021-01-19 | JOHNS HOPKINS HOSPITAL — high-priority violation on file | BALTIMORE, Baltimore (city), MD | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.