EPA Air · stack tests by state and year
Air-emissions stack tests in Connecticut, 2023
- 108Stack 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 2023; one facility can appear more than once, because this is a record of what happened rather than a list of places.
Counties in Connecticut, 2023
- New Haven County 31
- Hartford County 27
- Fairfield County 15
- Middlesex County 10
- New London County 9
- Litchfield County 7
- Undetermined County 5
Connecticut, other years
Air-emissions stack tests recorded in Connecticut, 2023
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2023-12-20 | URBAN MINING CT LLC | BEACON FALLS, New Haven, CT | Pass | State |
| 2023-12-11 | COVIDIEN LP | NORTH HAVEN, New Haven, CT | Pass | State |
| 2023-12-06 | CITY OF WATERBURY WPCF | WATERBURY, New Haven, CT | Pass | State |
| 2023-11-28 | ALGONQUIN GAS TRANSMISSION, LLC - CROMWELL COMPRESSOR STATION | CROMWELL, Middlesex, CT | Pass | State |
| 2023-11-28 | ALGONQUIN GAS TRANSMISSION, LLC - CROMWELL COMPRESSOR STATION | CROMWELL, Middlesex, CT | Pass | State |
| 2023-11-21 | VERICO TECHNOLOGIES | ENFIELD, Hartford, CT | Fail | State |
| 2023-11-14 | AMGRAPH PACKAGING, INC. | WATERTOWN, Litchfield, CT | Fail | State |
| 2023-11-13 | YALE UNIVERSITY WEST CAMPUS | WEST HAVEN, New Haven, CT | Pass | State |
| 2023-11-09 | QUANTUM BIOPOWER SOUTHINGTON LLC | SOUTHINGTON, Hartford, CT | Fail | State |
| 2023-11-02 | HOLCIM SOLUTIONS AND PRODUCTS US, LLC | BRISTOL, Hartford, CT | Pass | State |
| 2023-10-26 | HARTFORD WATER POLLUTION CONTROL FACILITY — high-priority violation on file | HARTFORD, Hartford, CT | Pass | State |
| 2023-10-25 | HARTFORD WATER POLLUTION CONTROL FACILITY — high-priority violation on file | HARTFORD, Hartford, CT | Pass | State |
| 2023-10-24 | HARTFORD WATER POLLUTION CONTROL FACILITY — high-priority violation on file | HARTFORD, Hartford, CT | Pass | State |
| 2023-10-24 | QUANTUM BIOPOWER SOUTHINGTON LLC | SOUTHINGTON, Hartford, CT | Pass | State |
| 2023-10-17 | NAUGATUCK WPCA/POTW | NAUGATUCK (HISTORICAL), New Haven, CT | Pass | State |
| 2023-10-12 | SHURTAPE SPECIALTY COATING | NEW HARTFORD, Litchfield, CT | Pass | State |
| 2023-10-03 | ALGONQUIN GAS TRANSMISSION, LLC - CHAPLIN COMPRESSOR STATION | CHAPLIN, Windham, CT | Pass | State |
| 2023-09-29 | RESIN SOLUTIONS LLC - STRATFORD FACILITY — high-priority violation on file | STRATFORD, Fairfield, CT | Fail | State |
| 2023-09-21 | EAST SHORE WATER POLL ABATEMENT FACILITY | NEW HAVEN, New Haven, CT | Pass | State |
| 2023-09-20 | REWORLD BRISTOL, INC. | BRISTOL, Hartford, CT | Pass | State |
| 2023-09-20 | REWORLD BRISTOL, INC. | BRISTOL, Hartford, CT | Pass | State |
| 2023-09-17 | CONNECTICUT JET POWER - COS COB STATION | GREENWICH, Fairfield, CT | Pass | State |
| 2023-09-16 | CONNECTICUT JET POWER - COS COB STATION | GREENWICH, Fairfield, CT | Pass | State |
| 2023-09-16 | CONNECTICUT JET POWER - COS COB STATION | GREENWICH, Fairfield, CT | Pass | State |
| 2023-09-14 | WALLINGFORD ENERGY, LLC | WALLINGFORD, New Haven, CT | Pass | State |
| 2023-09-13 | WALLINGFORD ENERGY, LLC | WALLINGFORD, New Haven, CT | Pass | State |
| 2023-09-12 | SIKORSKY AIRCRAFT - MAIN PLANT | STRATFORD, Fairfield, CT | Pass | State |
| 2023-09-12 | WALLINGFORD ENERGY, LLC | WALLINGFORD, New Haven, CT | Pass | State |
| 2023-09-11 | WALLINGFORD ENERGY, LLC | WALLINGFORD, New Haven, CT | Pass | State |
| 2023-09-07 | REWORLD CONNECTICUT COMPANY — high-priority violation on file | PRESTON, New London, CT | Pass | State |
| 2023-09-07 | REWORLD CONNECTICUT COMPANY — high-priority violation on file | PRESTON, New London, CT | Pass | State |
| 2023-08-31 | WALLINGFORD ENERGY, LLC | WALLINGFORD, New Haven, CT | Pass | State |
| 2023-08-30 | YALE UNIVERSITY, SCHOOL OF MEDICINE PREMISES | NEW HAVEN, New Haven, CT | Pass | State |
| 2023-08-30 | YALE UNIVERSITY, SCHOOL OF MEDICINE PREMISES | NEW HAVEN, New Haven, CT | Pass | State |
| 2023-08-30 | YALE UNIVERSITY, SCHOOL OF MEDICINE PREMISES | NEW HAVEN, New Haven, CT | Pass | State |
| 2023-08-30 | WALLINGFORD ENERGY, LLC | WALLINGFORD, New Haven, CT | Pass | State |
| 2023-08-29 | WALLINGFORD ENERGY, LLC | WALLINGFORD, New Haven, CT | Pass | State |
| 2023-08-27 | MIDDLETOWN POWER LLC | MIDDLETOWN, Middlesex, CT | Pass | State |
| 2023-08-26 | MIDDLETOWN POWER LLC | MIDDLETOWN, Middlesex, CT | Pass | State |
| 2023-08-26 | MIDDLETOWN POWER LLC | MIDDLETOWN, Middlesex, CT | Pass | State |
| 2023-08-25 | MIDDLETOWN POWER LLC | MIDDLETOWN, Middlesex, CT | Pass | State |
| 2023-08-17 | PRATT & WHITNEY, DIVISION OF RTX CORPORATION | MIDDLETOWN, Middlesex, CT | Pass | State |
| 2023-08-09 | MIDDLESEX HOSPITAL | MIDDLETOWN, Middlesex, CT | Pass | State |
| 2023-08-08 | BRADLEY INTERNATIONAL AIRPORT / AMERESCO SELECT, INC. | WINDSOR LOCKS, Hartford, CT | Pass | State |
| 2023-08-02 | RAND-WHITNEY CONTAINER BOARD LP | MONTVILLE, TOWN OF, New London, CT | Pass | State |
| 2023-07-20 | O & G INDUSTRIES - STAMFORD PLANT — high-priority violation on file | STAMFORD, Fairfield, CT | Pass | State |
| 2023-07-06 | UNIVERSITY OF CONNECTICUT - STAMFORD | STAMFORD, Fairfield, CT | Pass | State |
| 2023-07-06 | U S NAVAL SUBMARINE BASE — high-priority violation on file | GROTON (HISTORICAL), New London, CT | Pass | State |
| 2023-07-06 | U S NAVAL SUBMARINE BASE — high-priority violation on file | GROTON (HISTORICAL), New London, CT | Pass | State |
| 2023-07-06 | U S NAVAL SUBMARINE BASE — high-priority violation on file | GROTON (HISTORICAL), New London, CT | Pass | State |
| 2023-06-28 | AMERICAN GREENFUELS, LLC | NEW HAVEN, New Haven, CT | Incomplete | U.S. EPA |
| 2023-06-27 | U S NAVAL SUBMARINE BASE — high-priority violation on file | GROTON (HISTORICAL), New London, CT | Pass | State |
| 2023-06-27 | U S NAVAL SUBMARINE BASE — high-priority violation on file | GROTON (HISTORICAL), New London, CT | Pass | State |
| 2023-06-27 | U S NAVAL SUBMARINE BASE — high-priority violation on file | GROTON (HISTORICAL), New London, CT | Pass | State |
| 2023-06-23 | HARTFORD HOSPITAL COGENERATION FACILITY | HARTFORD, Hartford, CT | Pass | State |
| 2023-06-20 | SPARTECH, L.L.C. | STAMFORD, Fairfield, CT | Pass | State |
| 2023-06-16 | ITW GRAPHICS | MANCHESTER, Hartford, CT | Pass | State |
| 2023-06-15 | GB II NEW HAVEN, LLC - NEW HAVEN HARBOR STATION | NEW HAVEN, New Haven, CT | Pass | State |
| 2023-06-15 | HYTONE AG-GRID, LLC | COVENTRY, Tolland, CT | Pass | State |
| 2023-06-14 | GB II NEW HAVEN, LLC - NEW HAVEN HARBOR STATION | NEW HAVEN, New Haven, CT | Pass | State |
| 2023-06-14 | GB II NEW HAVEN, LLC - NEW HAVEN HARBOR STATION | NEW HAVEN, New Haven, CT | Pass | State |
| 2023-06-14 | HYTONE AG-GRID, LLC | COVENTRY, Tolland, CT | Fail | State |
| 2023-05-31 | GB II CONNECTICUT, LLC - BRIDGEPORT HARBOR STATION | BRIDGEPORT, Fairfield, CT | Pass | State |
| 2023-05-31 | ALGONQUIN GAS TRANSMISSION, LLC - CROMWELL COMPRESSOR STATION | CROMWELL, Middlesex, CT | Pass | State |
| 2023-05-30 | GB II CONNECTICUT, LLC - BRIDGEPORT HARBOR STATION | BRIDGEPORT, Fairfield, CT | Pass | State |
| 2023-05-25 | THE MATTABASSETT DISTRICT — high-priority violation on file | CROMWELL, Middlesex, CT | Pass | State |
| 2023-05-18 | WHEELABRATOR BRIDGEPORT LP | BRIDGEPORT, Fairfield, CT | Pass | State |
| 2023-05-18 | WHEELABRATOR BRIDGEPORT LP | BRIDGEPORT, Fairfield, CT | Pass | State |
| 2023-05-18 | WHEELABRATOR BRIDGEPORT LP | BRIDGEPORT, Fairfield, CT | Pass | State |
| 2023-05-17 | CPV TOWANTIC, LLC | OXFORD, New Haven, CT | Pass | State |
| 2023-05-17 | CPV TOWANTIC, LLC | OXFORD, New Haven, CT | Pass | State |
| 2023-05-04 | WHEELABRATOR LISBON INC. | CONNECTICUT, Undetermined, CT | Pass | State |
| 2023-05-03 | WHEELABRATOR LISBON INC. | CONNECTICUT, Undetermined, CT | Pass | State |
| 2023-04-27 | PLAINFIELD RENEWABLE ENERGY LLC | PLAINFIELD, Litchfield, CT | Pass | State |
| 2023-04-20 | WALLINGFORD ENERGY, LLC | WALLINGFORD, New Haven, CT | Pass | State |
| 2023-04-14 | ESPN, INC. | BRISTOL, Hartford, CT | Pass | State |
| 2023-04-13 | THE JACKSON LABORATORY FOR GENOMIC MEDICINE — high-priority violation on file | FARMINGTON, Hartford, CT | Pass | State |
| 2023-04-13 | ESPN, INC. | BRISTOL, Hartford, CT | Pass | State |
| 2023-04-13 | ESPN, INC. | BRISTOL, Hartford, CT | Pass | State |
| 2023-04-12 | ESPN, INC. | BRISTOL, Hartford, CT | Pass | State |
| 2023-04-12 | ESPN, INC. | BRISTOL, Hartford, CT | Pass | State |
| 2023-04-11 | ESPN, INC. | BRISTOL, Hartford, CT | Pass | State |
| 2023-04-11 | ESPN, INC. | BRISTOL, Hartford, CT | Pass | State |
| 2023-04-11 | KIMBERLY-CLARK CORPORATION, NEW MILFORD MILL — high-priority violation on file | NEW MILFORD, Litchfield, CT | Pass | State |
| 2023-04-11 | KIMBERLY-CLARK CORPORATION, NEW MILFORD MILL — high-priority violation on file | NEW MILFORD, Litchfield, CT | Pass | State |
| 2023-04-10 | ESPN, INC. | BRISTOL, Hartford, CT | Pass | State |
| 2023-03-30 | DEITSCH PLASTIC COMPANY, INC | WEST HAVEN, New Haven, CT | Pass | State |
| 2023-03-29 | FORT HILL AG GRID, LLC | THOMPSON, Windham, CT | Pass | State |
| 2023-03-09 | HAMILTON SUNDSTRAND CORPORATION - COLLINS AEROSPACE | WINDSOR LOCKS, Hartford, CT | Pass | State |
| 2023-03-09 | MEC DBA EYELET CRAFTERS, INC | WATERBURY, New Haven, CT | Pass | State |
| 2023-03-01 | BRADLEY INTERNATIONAL AIRPORT / AMERESCO SELECT, INC. | WINDSOR LOCKS, Hartford, CT | Pass | State |
| 2023-02-28 | BRADLEY INTERNATIONAL AIRPORT / AMERESCO SELECT, INC. | WINDSOR LOCKS, Hartford, CT | Pass | State |
| 2023-02-28 | BRADLEY INTERNATIONAL AIRPORT / AMERESCO SELECT, INC. | WINDSOR LOCKS, Hartford, CT | Pass | State |
| 2023-02-25 | MONTVILLE POWER LLC | CONNECTICUT, Undetermined, CT | Pass | State |
| 2023-02-16 | ESPN, INC. | BRISTOL, Hartford, CT | Pass | State |
| 2023-01-25 | AMERICAN GREENFUELS, LLC | NEW HAVEN, New Haven, CT | Incomplete | U.S. EPA |
| 2023-01-24 | YALE UNIVERSITY / CENTRAL POWER PLANT | NEW HAVEN, New Haven, CT | Pass | State |
| 2023-01-24 | YALE UNIVERSITY / CENTRAL POWER PLANT | NEW HAVEN, New Haven, CT | Pass | State |
| 2023-01-24 | YALE UNIVERSITY / CENTRAL POWER PLANT | NEW HAVEN, New Haven, CT | Pass | State |
| 2023-01-19 | MONTVILLE POWER LLC | CONNECTICUT, Undetermined, CT | Pass | State |
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Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.