EPA Air · stack tests by state and year
Air-emissions stack tests in Connecticut, 2024
- 122Stack 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 Connecticut during 2024; one facility can appear more than once, because this is a record of what happened rather than a list of places.
Counties in Connecticut, 2024
- New Haven County 29
- Hartford County 29
- Fairfield County 22
- Middlesex County 12
- New London County 11
- Undetermined County 8
- Windham County 4
- Tolland County 4
- Litchfield County 3
Connecticut, other years
Air-emissions stack tests recorded in Connecticut, 2024
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2024-12-19 | HARTFORD STEAM - 60 COLUMBUS | HARTFORD, Hartford, CT | Pass | State |
| 2024-12-05 | PALM ENERGY LLC | BRISTOL, Hartford, CT | Pass | State |
| 2024-12-05 | PALM ENERGY LLC | BRISTOL, Hartford, CT | Pass | State |
| 2024-12-05 | COVIDIEN LP | NORTH HAVEN, New Haven, CT | Pass | State |
| 2024-12-05 | GROWER DIRECT, INC | SOMERS, Tolland, CT | Pass | State |
| 2024-12-05 | GROWER DIRECT, INC | SOMERS, Tolland, CT | Pass | State |
| 2024-12-04 | PALM ENERGY LLC | BRISTOL, Hartford, CT | Pass | State |
| 2024-12-04 | ALGONQUIN GAS TRANSMISSION, LLC - CROMWELL COMPRESSOR STATION | CROMWELL, Middlesex, CT | Pass | State |
| 2024-12-04 | MONTVILLE POWER LLC | CONNECTICUT, Undetermined, CT | Pass | State |
| 2024-12-04 | GROWER DIRECT, INC | SOMERS, Tolland, CT | Pass | State |
| 2024-12-04 | GROWER DIRECT, INC | SOMERS, Tolland, CT | Pass | State |
| 2024-12-03 | ALGONQUIN GAS TRANSMISSION, LLC - CROMWELL COMPRESSOR STATION | CROMWELL, Middlesex, CT | Pass | State |
| 2024-12-03 | MONTVILLE POWER LLC | CONNECTICUT, Undetermined, CT | Pass | State |
| 2024-11-25 | YALE UNIVERSITY WEST CAMPUS | WEST HAVEN, New Haven, CT | Pass | State |
| 2024-11-21 | PRATT & WHITNEY, DIVISION OF RTX CORPORATION | MIDDLETOWN, Middlesex, CT | Pass | State |
| 2024-11-19 | PRATT & WHITNEY, DIVISION OF RTX CORPORATION | MIDDLETOWN, Middlesex, CT | Pass | State |
| 2024-11-15 | ETHOSENERGY ACCESSORIES AND COMPONENTS, LLC | EAST WINDSOR, Hartford, CT | Fail | State |
| 2024-11-14 | SYNAGRO RESIDUALS MANAGEMENT CO | WATERBURY, New Haven, CT | Pass | State |
| 2024-11-13 | CHEMICAL EQUIPMENT LABS OF DE, INC. | NEW HAVEN, New Haven, CT | Pass | State |
| 2024-11-13 | SYNAGRO RESIDUALS MANAGEMENT CO | WATERBURY, New Haven, CT | Pass | U.S. EPA |
| 2024-11-06 | REWORLD BRISTOL, INC. | BRISTOL, Hartford, CT | Pass | State |
| 2024-11-06 | REWORLD BRISTOL, INC. | BRISTOL, Hartford, CT | Pass | State |
| 2024-10-31 | HARTFORD WATER POLLUTION CONTROL FACILITY — high-priority violation on file | HARTFORD, Hartford, CT | Pass | State |
| 2024-10-30 | HARTFORD WATER POLLUTION CONTROL FACILITY — high-priority violation on file | HARTFORD, Hartford, CT | Pass | State |
| 2024-10-29 | HARTFORD WATER POLLUTION CONTROL FACILITY — high-priority violation on file | HARTFORD, Hartford, CT | Pass | State |
| 2024-10-29 | ALGONQUIN GAS TRANSMISSION LLC - OXFORD COMPRESSOR STATION | OXFORD, New Haven, CT | Pass | State |
| 2024-10-25 | NEW HAVEN /DPW (LANDFILL) | NEW HAVEN, New Haven, CT | Pass | State |
| 2024-10-17 | WESLEYAN UNIVERSITY - BOILER PLANT | MIDDLETOWN, Middlesex, CT | Pass | State |
| 2024-10-11 | SIKORSKY AIRCRAFT - MAIN PLANT | STRATFORD, Fairfield, CT | Pass | State |
| 2024-10-10 | ESPN, INC. | BRISTOL, Hartford, CT | Pass | State |
| 2024-10-02 | REWORLD CONNECTICUT COMPANY — high-priority violation on file | PRESTON, New London, CT | Pass | State |
| 2024-10-02 | REWORLD CONNECTICUT COMPANY — high-priority violation on file | PRESTON, New London, CT | Pass | State |
| 2024-09-19 | NAUGATUCK WPCA/POTW | NAUGATUCK (HISTORICAL), New Haven, CT | Pass | State |
| 2024-09-18 | EAST SHORE WATER POLL ABATEMENT FACILITY | NEW HAVEN, New Haven, CT | Pass | State |
| 2024-09-08 | WATERBURY GENERATION, LLC | WATERBURY, New Haven, CT | Pass | State |
| 2024-09-03 | ALGONQUIN GAS TRANSMISSION, LLC - CHAPLIN COMPRESSOR STATION | CHAPLIN, Windham, CT | Pass | State |
| 2024-09-03 | ALGONQUIN GAS TRANSMISSION, LLC - CHAPLIN COMPRESSOR STATION | CHAPLIN, Windham, CT | Pass | State |
| 2024-09-03 | ALGONQUIN GAS TRANSMISSION, LLC - CHAPLIN COMPRESSOR STATION | CHAPLIN, Windham, CT | Pass | State |
| 2024-08-29 | ORAFOL AMERICAS, INC. | AVON, Hartford, CT | Pass | State |
| 2024-08-27 | SPARTECH, L.L.C. | STAMFORD, Fairfield, CT | Pass | State |
| 2024-08-25 | MIDDLETOWN POWER LLC | MIDDLETOWN, Middlesex, CT | Pass | State |
| 2024-08-24 | MIDDLETOWN POWER LLC | MIDDLETOWN, Middlesex, CT | Pass | State |
| 2024-08-22 | CONNECTICUT MUNICIPAL ELECTRIC ENERGY COOPERATIVE | NORWICH, New London, CT | Pass | State |
| 2024-08-21 | CONNECTICUT MUNICIPAL ELECTRIC ENERGY COOPERATIVE | NORWICH, New London, CT | Pass | State |
| 2024-08-20 | CONNECTICUT MUNICIPAL ELECTRIC ENERGY COOPERATIVE | NORWICH, New London, CT | Pass | State |
| 2024-08-20 | CONNECTICUT MUNICIPAL ELECTRIC ENERGY COOPERATIVE | NORWICH, New London, CT | Pass | State |
| 2024-08-18 | MIDDLETOWN POWER LLC | MIDDLETOWN, Middlesex, CT | Pass | State |
| 2024-08-05 | BRADLEY INTERNATIONAL AIRPORT / AMERESCO SELECT, INC. | WINDSOR LOCKS, Hartford, CT | Pass | State |
| 2024-07-31 | STANLEY TOOLS | NEW BRITAIN, Hartford, CT | Pass | State |
| 2024-07-23 | MIDDLESEX HOSPITAL | MIDDLETOWN, Middlesex, CT | Pass | State |
| 2024-07-17 | H & T WATERBURY, INC. | WATERBURY, New Haven, CT | Pass | State |
| 2024-07-17 | FRITO-LAY, INC. | DAYVILLE, Windham, CT | Pass | State |
| 2024-07-10 | SPRAGUE OPERATING RESOURCES, LLC | BRIDGEPORT, Fairfield, CT | Pass | State |
| 2024-07-09 | FAIRFIELD UNIVERSITY | FAIRFIELD, Fairfield, CT | Pass | State |
| 2024-06-27 | ITW GRAPHICS | MANCHESTER, Hartford, CT | Pass | State |
| 2024-06-20 | U S NAVAL SUBMARINE BASE — high-priority violation on file | GROTON (HISTORICAL), New London, CT | Pass | State |
| 2024-06-18 | SCAPA TAPE NORTH AMERICA | WINDSOR, Hartford, CT | Pass | State |
| 2024-06-18 | U S NAVAL SUBMARINE BASE — high-priority violation on file | GROTON (HISTORICAL), New London, CT | Pass | State |
| 2024-06-13 | GB II NEW HAVEN, LLC - NEW HAVEN HARBOR STATION | NEW HAVEN, New Haven, CT | Pass | State |
| 2024-06-13 | MILFORD POWER COMPANY, LLC | MILFORD, New Haven, CT | Pass | State |
| 2024-06-12 | GB II NEW HAVEN, LLC - NEW HAVEN HARBOR STATION | NEW HAVEN, New Haven, CT | Pass | State |
| 2024-06-12 | MILFORD POWER COMPANY, LLC | MILFORD, New Haven, CT | Pass | State |
| 2024-06-11 | BOEHRINGER INGELHEIM PHARMACEUTICALS INC | RIDGEFIELD, Fairfield, CT | Pass | State |
| 2024-06-11 | GB II NEW HAVEN, LLC - NEW HAVEN HARBOR STATION | NEW HAVEN, New Haven, CT | Pass | State |
| 2024-06-06 | VERICO TECHNOLOGIES | ENFIELD, Hartford, CT | Pass | State |
| 2024-06-05 | TILCON CONNECTICUT - DANBURY PLANT | DANBURY, Fairfield, CT | Pass | State |
| 2024-06-04 | UNIVERSITY OF CONNECTICUT - STAMFORD | STAMFORD, Fairfield, CT | Pass | State |
| 2024-06-03 | TILCON CONNECTICUT - MANCHESTER PLANT | MANCHESTER, Hartford, CT | Pass | State |
| 2024-05-30 | CPV TOWANTIC, LLC | OXFORD, New Haven, CT | Pass | State |
| 2024-05-29 | CPV TOWANTIC, LLC | OXFORD, New Haven, CT | Pass | State |
| 2024-05-28 | CPV TOWANTIC, LLC | OXFORD, New Haven, CT | Pass | State |
| 2024-05-28 | CPV TOWANTIC, LLC | OXFORD, New Haven, CT | Pass | State |
| 2024-05-24 | PLAINFIELD RENEWABLE ENERGY LLC | PLAINFIELD, Litchfield, CT | Pass | State |
| 2024-05-23 | PLAINFIELD RENEWABLE ENERGY LLC | PLAINFIELD, Litchfield, CT | Pass | State |
| 2024-05-23 | WHEELABRATOR LISBON INC. | CONNECTICUT, Undetermined, CT | Pass | State |
| 2024-05-23 | WHEELABRATOR LISBON INC. | CONNECTICUT, Undetermined, CT | Pass | State |
| 2024-05-22 | THE MATTABASSETT DISTRICT — high-priority violation on file | CROMWELL, Middlesex, CT | Fail | State |
| 2024-05-20 | PFIZER GLOBAL MANUFACTURING | GROTON (HISTORICAL), New London, CT | Pass | State |
| 2024-05-17 | GB II CONNECTICUT, LLC - BRIDGEPORT HARBOR STATION | BRIDGEPORT, Fairfield, CT | Pass | State |
| 2024-05-16 | GB II CONNECTICUT, LLC - BRIDGEPORT HARBOR STATION | BRIDGEPORT, Fairfield, CT | Pass | State |
| 2024-05-15 | KIMBERLY-CLARK CORPORATION, NEW MILFORD MILL — high-priority violation on file | NEW MILFORD, Litchfield, CT | Pass | State |
| 2024-05-14 | GB II CONNECTICUT, LLC - BRIDGEPORT HARBOR STATION | BRIDGEPORT, Fairfield, CT | Pass | State |
| 2024-05-14 | GB II CONNECTICUT, LLC - BRIDGEPORT HARBOR STATION | BRIDGEPORT, Fairfield, CT | Pass | State |
| 2024-05-07 | SIKORSKY AIRCRAFT - MAIN PLANT | STRATFORD, Fairfield, CT | Pass | State |
| 2024-05-07 | WHEELABRATOR BRIDGEPORT LP | BRIDGEPORT, Fairfield, CT | Pass | State |
| 2024-05-07 | WHEELABRATOR BRIDGEPORT LP | BRIDGEPORT, Fairfield, CT | Pass | State |
| 2024-05-07 | WHEELABRATOR BRIDGEPORT LP | BRIDGEPORT, Fairfield, CT | Pass | State |
| 2024-05-02 | IROQUOIS PIPELINE OPERATING COMPANY - BROOKFIELD COMPRESSOR STATION | BROOKFIELD, Fairfield, CT | Pass | State |
| 2024-05-02 | IROQUOIS PIPELINE OPERATING COMPANY - BROOKFIELD COMPRESSOR STATION | BROOKFIELD, Fairfield, CT | Pass | State |
| 2024-04-26 | PEPPERIDGE FARM, INC | BLOOMFIELD, Hartford, CT | Pass | State |
| 2024-04-25 | PRATT & WHITNEY, DIVISION OF RTX CORPORATION | MIDDLETOWN, Middlesex, CT | Pass | State |
| 2024-04-24 | AMERICAN GREENFUELS, LLC | NEW HAVEN, New Haven, CT | Pass | U.S. EPA |
| 2024-04-17 | U S NAVAL SUBMARINE BASE — high-priority violation on file | GROTON (HISTORICAL), New London, CT | Pass | State |
| 2024-04-04 | ALGONQUIN GAS TRANSMISSION LLC - OXFORD COMPRESSOR STATION | OXFORD, New Haven, CT | Pass | State |
| 2024-03-21 | ESPN, INC. | BRISTOL, Hartford, CT | Pass | State |
| 2024-03-21 | ESPN, INC. | BRISTOL, Hartford, CT | Pass | State |
| 2024-03-21 | ESPN, INC. | BRISTOL, Hartford, CT | Fail | State |
| 2024-03-21 | ESPN, INC. | BRISTOL, Hartford, CT | Pass | State |
| 2024-03-21 | ESPN, INC. | BRISTOL, Hartford, CT | Pass | State |
| 2024-03-20 | AMERICAN GREENFUELS, LLC | NEW HAVEN, New Haven, CT | Incomplete | U.S. EPA |
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Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.