| Site Name | Site Type | City | C.D. | County |
| 1 | 10 RESERVE ROAD | BF | Hartford | 01 | Hartford |
| 2 | 31 SOREL DRIVE OIL RELEASE | SHORT | Shelton | 04 | Fairfield |
| 3 | 50 ALDA STREET OIL SPILL | SHORT | Bristol | 01 | Hartford |
| 4 | 50 MILES STREET | BF | Bridgeport | 04 | Fairfield |
| 5 | A H NILSON MACHINE COMPANY | SAND | SHELTON | 05 | FAIRFIELD |
| 6 | ABLILITY MACHINE & TOOL COMPANY | SAND | MANCHESTER | 01 | HARTFORD |
| 7 | ACCURATE BRAZING COMPANY | SAND | NEWINGTON | 01 | HARTFORD |
| 8 | ACITRONICS, INC. | SAND | BRANFORD | 03 | NEW HAVEN |
| 9 | ACME RIVET & MACHINE | RCRA | Bristol | 01 | Hartford |
| 10 | ADCO MANUFACTURING | SAND | SOUTH WINDSOR | 01 | HARTFORD |
| 11 | AHLSTROM DEXTER - AMERICAN WRITING | RCRA | Windsor Locks | 01 | Hartford |
| 12 | AHLSTROM DEXTER - MAIN PLANT | RCRA | Windsor Locks | 01 | Hartford |
| 13 | AIRPAX CORPORATION - PLANT 1 | SAND | CHESHIRE | 05 | NEW HAVEN |
| 14 | AKIM ENGINEERING COMPANY, INC. | SAND | WINDHAM | 02 | WINDHAM |
| 15 | ALCON PLASTICS | SAND | ENFIELD | 06 | HARTFORD |
| 16 | ALLIED METAL PRODUCTS, INC. | SAND | BERLIN | 01 | HARTFORD |
| 17 | ALLING LANDER COMPANY | SAND | CHESHIRE | 05 | NEW HAVEN |
| 18 | AMERICAN THREAD COMPANY | SHORT | WINDHAM | 02 | WINDHAM |
| 19 | AMERICAN TOOL AND MANUFACTURING | SAND | PLAINVILLE | 06 | HARTFORD |
| 20 | AMSTAR | SAND | SPRAGUE | 02 | NEW LONDON |
| 21 | AMTRAK GENERAL MAINTENANCE FACILITY | SAND | NEW HAVEN | 03 | NEW HAVEN |
| 22 | ANACONDA INDUSTRIES | SAND | ANSONIA | 05 | NEW HAVEN |
| 23 | ANAMET, INC. | SAND | WATERBURY | 02 | NEW HAVEN |
| 24 | ANGELILLO PROPERTY | SAND | SOUTHINGTON | 06 | HARTFORD |
| 25 | ANSONIA LANDFILL | SAND | ANSONIA | 03 | NEW HAVEN |
| 26 | APEX MACHINE AND TOOL COMPANY | SAND | FARMINGTON | 06 | HARTFORD |
| 27 | ARCH CHEMICALS INC | RCRA | Cheshire | 03 | New Haven |
| 28 | ASHCROFT INC | RCRA | Stratford | 02 | Fairfield |
| 29 | ASHLAND CHEMICAL / KYOVA CORPORATION | SAND | BETHEL | 05 | FAIRFIELD |
| 30 | ASHLAND MILL | SHORT | JEWETT CITY | 02 | NEW LONDON |
| 31 | AUTO BATTERY AND ELECTRIC COMPANY | SHORT | NEW LONDON | 02 | NEW LONDON |
| 32 | AUTO SWAGE PRODUCTS INC | RCRA | Shelton | 03 | Fairfield |
| 33 | A.B.A. TOOL & DIE | SAND | MANCHESTER | 01 | HARTFORD |
| 34 | A.N. PIERSON, INC. | SAND | CROMWELL | 01 | MIDDLESEX |
| 35 | BALL AND ROLLER BEARING COMPANY | SAND | DANBURY | 05 | FAIRFIELD |
| 36 | BALL & SOCKET | RCRA | Cheshire | 05 | New Haven |
| 37 | BALTIC MILLS | SHORT | BALTIC | 02 | NEW LONDON |
| 38 | BANTAM RIVER CORP PARK LLC | RCRA | Litchfield | 05 | Litchfield |
| 39 | BARKHAMSTED-NEW HARTFORD LANDFILL | NPL | Barkhamsted | 01 | Litchfield |
| 40 | BASS PLATING | RCRA | Bloomfield | 01 | Hartford |
| 41 | BAUER AEROSPACE, INC. (FORMER) | SAND | FARMINGTON | 06 | HARTFORD |
| 42 | BEACON HEIGHTS LANDFILL | NPL | Beacon Falls | 03 | New Haven |
| 43 | BEANEY'S CLEANERS | SHORT | Naugatuck | 03 | New Haven |
| 44 | BEATON & CORBIN MANUFACTURING | SHORT | SOUTHINGTON | 06 | HARTFORD |
| 45 | BEAUVAIS PRINTING COMPANY | SAND | GUILFORD | 03 | NEW HAVEN |
| 46 | BECTON DICKINSON COMPANY | SAND | NORTH CANAAN | 06 | LITCHFIELD |
| 47 | BEDUS & STANKER ELECTROPLATING | SAND | BRISTOL | 06 | HARTFORD |
| 48 | BERKSHIRE LITHOGRAPHERS | SAND | BETHEL | 05 | FAIRFIELD |
| 49 | BETHEL LATEX | SAND | BETHEL | 05 | FAIRFIELD |
| 50 | BIC CORPORATION | RCRA | Milford | 03 | New Haven |
| 51 | BIRKEN MANUFACTURING CO | RCRA | Bloomfield | 01 | Hartford |
| 52 | BIX FURNITURE STRIPPING OF MILFORD | SAND | NEW MILFORD | 06 | LITCHFIELD |
| 53 | BLACK ROCK SHIPYARD | SHORT | BRIDGEPORT | 04 | FAIRFIELD |
| 54 | BOVANO | RCRA | Cheshire | 05 | New Haven |
| 55 | BRANFORD LANDFILL | SAND | BRANFORD | 03 | NEW HAVEN |
| 56 | BREAULT ROAD DISPOSAL AREA | SAND | BEACON FALLS | 05 | NEW HAVEN |
| 57 | BRIDGEPORT BRASS | SAND | NORWALK | 04 | FAIRFIELD |
| 58 | BRIDGEPORT HARBOR STATION | RCRA | Bridgeport | 04 | Fairfield |
| 59 | BRISTOL COMPANY | SAND | WATERBURY | 03 | NEW HAVEN |
| 60 | BRISTOL FRANKLIN STREET PCBS | SHORT | Bristol | 01 | Hartford |
| 61 | BRISTOL SANITARY LANDFILL | RCRA | Bristol | 01 | Hartford |
| 62 | BRISTOL SOCKET SCREW | SAND | BEACON FALLS | 05 | NEW HAVEN |
| 63 | BROAD BROOK MILL | NPL | East Windsor | 01 | Hartford |
| 64 | BRONSON HOMER D CO | RCRA | Beacon Falls | 03 | New Haven |
| 65 | BROOKFIELD DOT GARAGE | SAND | BROOKFIELD | 05 | FAIRFIELD |
| 66 | BROWN MANUFACTURING COMPANY, INC. | SAND | PLAINVILLE | 06 | HARTFORD |
| 67 | BRUNSWICK MILL | SHORT | Plainfield | 02 | Windham |
| 68 | BRYDEN AND MORSE STREETS | SHORT | HAMDEN | 03 | NEW HAVEN |
| 69 | BUCKLAND MANUFACTURING | BF | Manchester | 01 | Hartford |
| 70 | BUELLS GREENHOUSES, INC. | SAND | EASTFORD | 02 | WINDHAM |
| 71 | BURGESS ROAD LANDFILL | SAND | SOUTH WINDSOR | 01 | HARTFORD |
| 72 | CAPITOL REGION COUNCIL OF GOVERNEMENTS BROWNFIELDS PROGRAM | BF | Hartford | 01 | Hartford |
| 73 | CARBIDE MOLD | SAND | CHESHIRE | 05 | NEW HAVEN |
| 74 | CARBOLABS, INC. | SAND | BETHANY | 03 | NEW HAVEN |
| 75 | CARLYLE JOHNSON MACHINE COMPANY | SAND | MANCHESTER | 01 | HARTFORD |
| 76 | CARPENTER TECHNOLOGY CORPORATION | SAND | BRIDGEPORT | 04 | FAIRFIELD |
| 77 | CARVILL COMBING COMPANY | SHORT | Plainfield | 02 | Windham |
| 78 | CBS (WESTINGHOUSE) | RCRA | Bridgeport | 04 | Fairfield |
| 79 | CEDAR GROVE REDEVELOPMENT | SAND | NEW LONDON | 02 | NEW LONDON |
| 80 | CEE ASSOCIATES | RCRA | New Milford | 05 | Litchfield |
| 81 | CENTURY BRASS | RCRA | Waterbury | 05 | New Haven |
| 82 | CENTURY BRASS - NEW MILFORD | RCRA | New Milford | 05 | Litchfield |
| 83 | CENTURY BRASS - WATERBURY | RCRA | Waterbury | 05 | New Haven |
| 84 | CERRO FABRICATED PRODUCTS | RCRA | Bristol | 01 | Hartford |
| 85 | CHARLTON PRESS PUBLICATIONS | SAND | DERBY | 05 | NEW HAVEN |
| 86 | CHASE BRASS AND COPPER | SAND | WATERBURY | 05 | NEW HAVEN |
| 87 | CHESHIRE GROUND WATER CONTAMINATION | NPL | Cheshire | 05 | New Haven |
| 88 | CHESHIRE MUNICIPAL LANDFILL | SAND | CHESHIRE | 05 | NEW HAVEN |
| 89 | CHESTEL, INC. | SAND | CHESTER | 02 | MIDDLESEX |
| 90 | CHESTER MUNICIPAL LANDFILL | SAND | CHESTER | 02 | MIDDLESEX |
| 91 | CHROME ENGINEERING | SHORT | BRIDGEPORT | 04 | FAIRFIELD |
| 92 | CITY OF BRIDGEPORT BROWNFIELDS PROGRAM | BF | Bridgeport | 04 | Fairfield |
| 93 | CITY OF BRISTOL BROWNFIELDS PROGRAM | BF | Bristol | 01 | Hartford |
| 94 | CITY OF DANBURY BROWNFIELDS PROGRAM | BF | Danbury | 05 | Fairfield |
| 95 | CITY OF HARTFORD BROWNFIELDS PROGRAM | BF | Hartford | 01 | Hartford |
| 96 | CITY OF MERIDEN BROWNFIELDS PROGRAM | BF | Meriden |  | New Haven |
| 97 | CITY OF MIDDLETOWN BROWNFIELDS PROGRAM | BF | Middletown | 03 | Middlesex |
| 98 | CITY OF NEW BRITAIN BROWNFIELDS PROGRAM | BF | New Britain | 05 | Hartford |
| 99 | CITY OF NEW HAVEN BROWNFIELDS PROGRAM | BF | New Haven | 03 | New Haven |
| 100 | CITY OF NEW LONDON BROWNFIELDS PROGRAM | BF | New London | 02 | New London |
| 101 | CITY OF NORWICH BROWNFIELDS PROGRAM | BF | Norwich | 02 | New London |
| 102 | CITY OF NORWICH BROWNFIELDS PROGRAM | BF | Norwich | 02 | New London |
| 103 | CITY OF SHELTON BROWNFIELDS PROGRAM | BF | Shelton | 03 04 | Fairfield |
| 104 | CITY OF STAMFORD BROWNFIELDS PROGRAM | BF | Stamford | 04 | Fairfield |
| 105 | CITY OF TORRINGTON BROWNFIELDS PROGRAM | BF | Torrington | 05 | Litchfield |
| 106 | CITY OF VERNON BROWNFIELDS PROGRAM | BF | Vernon | 02 | Tolland |
| 107 | CITY OF WEST HAVEN BROWNFIELDS PROGRAM | BF | West Haven | 03 | New Haven |
| 108 | CLARK DEWATERING LIMITED | SAND | BOLTON | 02 | TOLLAND |
| 109 | CLEAN HARBORS BRODERICK ROAD | RCRA | Bristol | 01 | Hartford |
| 110 | CLINTON MUNICIPAL LANDFILL | SAND | CLINTON | 03 | MIDDLESEX |
| 111 | COASTAL TANK LINES | SAND | WALLINGFORD | 03 | NEW HAVEN |
| 112 | COLONIAL BRONZE | RCRA | Torrington | 01 | Litchfield |
| 113 | COLT MANUFACTURING COMPANY | RCRA | Hartford | 01 | Hartford |
| 114 | COLUMBIA MAGNETICS | SAND | DANBURY | 05 | FAIRFIELD |
| 115 | COMBUSTION ENGINEERING | RCRA | Windsor | 01 | Hartford |
| 116 | COMERFORD MANUFACTURING COMPANY | SAND | BRISTOL | 06 | HARTFORD |
| 117 | CONN ENGINEERING ASSOC CORP | SAND | NEWTOWN | 05 | FAIRFIELD |
| 118 | CONNECTICUT CYCLE ACCESSORIES, INC. | SAND | WINDHAM | 02 | WINDHAM |
| 119 | CONNECTICUT DEP BROWNFIELDS PROGRAM | BF | [Unknown City] | 01 02 03 04 05 | Fairfield, Hartford, Litchfield, Middlesex, New Haven, New London, Tolland, Windham |
| 120 | CONNECTICUT DEPARTMENT OF ECONOMIC AND COMMUNITY DEVELOPMENT BROWNFIELDS PROGRAM | BF | Hartford | 01 | Hartford |
| 121 | CONNECTICUT SPRING & STAMPING COMPANY | SAND | FARMINGTON | 06 | HARTFORD |
| 122 | CONTRACT PLATING COMPANY, INC | RCRA | Stratford | 03 | Fairfield |
| 123 | CORBIN RUSSWIN | RCRA | Berlin | | Hartford |
| 124 | CORNING ROAD MUNICIPAL LANDFILL | SAND | NORWICH | 02 | NEW LONDON |
| 125 | CORNWALL DOT GARAGE | SAND | CORNWALL | 06 | LITCHFIELD |
| 126 | COS COB POWER PLANT | BF | Greenwich | 04 | Fairfield |
| 127 | COUNTY WIDE CONSTRUCTION | SAND | CHESHIRE | 05 | NEW HAVEN |
| 128 | CRRA - SHELTON | RCRA | Shelton | 04 | Fairfield |
| 129 | CRRA - WALLINGFORD | RCRA | Wallingford | 03 | New Haven |
| 130 | CT AIR NATIONAL GUARD BRADLEY BASE | SAND | EAST GRANBY | 06 | Hartford |
| 131 | CT DOT ROCKY HILL BROOKS STREET FACILITY | SAND | ROCKY HILL | 01 | HARTFORD |
| 132 | CT DOT ROCKY HILL WEST STREET FACILITY | SAND | ROCKY HILL | 01 | HARTFORD |
| 133 | CT DOT SEARLES ROAD DISPOSAL FACILITY #33 | SAND | BROOKLYN | 02 | WINDHAM |
| 134 | CULBRO INDIAN HEAD FARM | SAND | EAST GRANBY | 06 | HARTFORD |
| 135 | CUSTOM DESIGN | SHORT | DANBURY | 05 | Fairfield |
| 136 | CUSTOM PRODUCT CORPORATION | SAND | NORTH HAVEN | 03 | NEW HAVEN |
| 137 | CYTEC INDUSTRIES COATING & PERFORMANCE | RCRA | Wallingford | 03 | New Haven |
| 138 | DANBURY LANDFILL | RCRA | Danbury | 05 | Fairfield |
| 139 | DANIELSON DOT GARAGE | SAND | KILLINGLY | 02 | WINDHAM |
| 140 | DARIEN LANDFILL | SAND | DARIEN | 04 | FAIRFIELD |
| 141 | DAYON MANUFACTURING, INC. | SAND | FARMINGTON | 06 | HARTFORD |
| 142 | DEEP RIVER DUMP | SAND | DEEP RIVER | 02 | MIDDLESEX |
| 143 | DEEP RIVER MANUFACTURING COMPANY | SAND | WESTBROOK | 02 | MIDDLESEX |
| 144 | DELL MANUFACTURING COMPANY | SAND | FARMINGTON | 06 | HARTFORD |
| 145 | DELTA IND/THIOKOL CORP | SAND | EAST GRANBY | 06 | HARTFORD |
| 146 | DELTA RUBBER COMPANY | RCRA | Danielson, Killingly | 02 | Windham |
| 147 | DENOMINATOR COMPANY, INC. | SAND | WOODBURY | 06 | LITCHFIELD |
| 148 | DERBY LANDFILL | SAND | DERBY | 05 | NEW HAVEN |
| 149 | DEVON STATION | RCRA | Milford | 03 | New Haven |
| 150 | DIP N STRIP | SHORT | COVENTRY | 02 | TOLLAND |
| 151 | DIP & STRIP | SAND | NORWALK | 04 | FAIRFIELD |
| 152 | DONAHUE PROPERTY | SAND | NORWALK | 04 | FAIRFIELD |
| 153 | DONHAM CRAFT | RCRA | Naugatuck | 05 | New Haven |
| 154 | DOW CHEMICAL | RCRA | Gales Ferry, Ledyard | 02 | New London |
| 155 | DSD CO-MAGNATECH DIVISION | SAND | EAST GRANBY | 06 | HARTFORD |
| 156 | DUPONT PHOTOMASKS | RCRA | Danbury | 05 | Fairfield |
| 157 | DURHAM MEADOWS | NPL | Durham | 02 | Middlesex |
| 158 | E B EXTERMINATING COMPANY | SAND | EAST HADDAM | 02 | MIDDLESEX |
| 159 | EAST COAST ENVIRONMENTAL SERVICES | RCRA | New Haven | 03 | New Haven |
| 160 | EAST GRANBY LANDFILL | SAND | EAST GRANBY | 06 | HARTFORD |
| 161 | EAST HADDAM MUNICIPAL LANDFILL | SAND | EAST HADDAM | 02 | MIDDLESEX |
| 162 | EAST HAMPTON MUNICIPAL LANDFILL | SAND | EAST HAMPTON | 02 | MIDDLESEX |
| 163 | EAST HARTFORD MUNICIPAL LANDFILL | SAND | EAST HARTFORD | 01 | HARTFORD |
| 164 | EASTERN PEQUOT RESERVATION | SHORT | NORTH STONINGTON | 02 | NEW LONDON |
| 165 | ECHLIN MANUFACTURING COMPANY | SAND | BRANFORD | 03 | NEW HAVEN |
| 166 | EDMUNDS MANUFACTURING COMPANY | SAND | FARMINGTON | 06 | HARTFORD |
| 167 | ELECTRIC BOAT CORP. - EASTERN POINT ROAD | RCRA | Groton | 02 | New London |
| 168 | ELECTRIC BOAT CORP. - MIDWAY | RCRA | Groton | 02 | New London |
| 169 | ELECTROLUX | SAND | SEYMOUR | 05 | NEW HAVEN |
| 170 | ELECTRONIC COIL CORPORATION | SAND | FARMINGTON | 06 | HARTFORD |
| 171 | ELECTRONICS METAL FINISHING CORP | RCRA | Danbury | 05 | Fairfield |
| 172 | ENSIGN BICKFORD | RCRA | Simsbury | 05 | Hartford |
| 173 | ENTHONE INC | RCRA | West Haven | 03 | New Haven |
| 174 | ENVIRITE CORP. | RCRA | Thomaston | 05 | Litchfield |
| [Replication or Save Conflict] | | | | | |
| 176 | ENVIRONMENTAL WASTE RESOURCES | RCRA | Waterbury | 05 | New Haven |
| 177 | ERICKSON PROPERTY | BF | Ledyard | 02 | New London |
| 178 | ESCO LABORATORIES, INC. | SAND | PLAINVILLE | 06 | HARTFORD |
| 179 | ESSEX MUNICIPAL LANDFILL | SAND | ESSEX | 02 | MIDDLESEX |
| 180 | EXIDE BATTERY PLANT | RCRA | Fairfield | 04 | Fairfield |
| 181 | EXXON ENTERPRISES, INC. | SAND | BROOKFIELD | 05 | FAIRFIELD |
| 182 | FAIRFIELD MUNICIPAL LANDFILL | SAND | FAIRFIELD | 04 | FAIRFIELD |
| 183 | FARIA, THOMAS G. | RCRA | Uncasville | 02 | New London |
| 184 | FARMINGTON LANDFILL | SAND | FARMINGTON | 06 | HARTFORD |
| 185 | FARMINGTON LANDFILL II | SAND | FARMINGTON | 06 | HARTFORD |
| 186 | FERRO CORP | RCRA | Norwalk | 04 | Fairfield |
| 187 | FIBERGLASS FABRICATORS, INC. | SAND | PUTNAM | 02 | WINDHAM |
| 188 | FIELD-HOLSTEIN PROPERTY | BF | Glastonbury | 01 | Hartford |
| 189 | FLETCHER-TERRY COMPANY | SAND | FARMINGTON | 06 | HARTFORD |
| 190 | FLOW POLYMERS | RCRA | Stratford | 03 | Fairfield |
| 191 | FM PRECISION GOLF MFG CORP | RCRA | Torrington | 05 | Litchfield |
| 192 | FORESTVILLE PLATING | RCRA | Southington | 01 | Hartford |
| 193 | FRISMAR, INC. (FORMER) | SAND | HADDAM | 02 | MIDDLESEX |
| 194 | G & B LAGOON | SHORT | GEORGETOWN | 05 | FAIRFIELD |
| 195 | GALLUP'S QUARRY | NPL | Plainfield | 02 | Windham |
| 196 | GAR ELECTROFORMING | RCRA | Danbury | 05 | Fairfield |
| 197 | GBC METALS, LLC | RCRA | Waterbury | 05 | New Haven |
| 198 | GENERAL DATA COMM | RCRA | Waterbury | 05 | New Haven |
| 199 | GENERAL ELECTRIC - BRIDGEPORT | RCRA | Bridgeport | 04 | Fairfield |
| 200 | GENERAL ELECTRIC WASTE WATER FACILITY | RCRA | Plainville | 05 | Hartford |
| 201 | GENERAL MOTORS | RCRA | Bristol | 01 | Hartford |
| 202 | GEORGETOWN REDEVELOPMENT CORPORATION BROWNFIELDS PROGRAM | BF | Georgetown | 04 | Fairfield |
| 203 | GILBERT & BENNETT | RCRA | Georgetown, Redding | 04 | Fairfield |
| 204 | GILL L. M. WELDING | SAND | MANCHESTER | 01 | HARTFORD |
| 205 | GLASS CONTAINER CORPORATION | SAND | KILLINGLY | 02 | WINDHAM |
| 206 | GOODWIN COLLEGE BROWNFIELDS PROGRAM | BF | East Hartford | 01 | Hartford |
| 207 | GRODEL MANUFACTURING, INC. | SAND | WATERBURY | 03 | NEW HAVEN |
| 208 | GROS-ITE INDUSTRIES, INC. | SAND | FARMINGTON | 06 | HARTFORD |
| 209 | H L DIEHL | SAND | SOUTH WINDHAM | 02 | WINDHAM |
| 210 | HABITAT FOR HUMANITY OF SOUTHEASTERN CONNECTICUT BROWNFIELDS PROGRAM | BF | New London | 02 | New London |
| 211 | HADDAM MUNICIPAL LANDFILL | SAND | HADDAM | 02 | MIDDLESEX |
| 212 | HADDAM NECK PLANT | RCRA | East Hampton | 02 | Middlesex |
| 213 | HALE MANUFACTURING COMPANY | SAND | PUTNAM | 02 | WINDHAM |
| 214 | HAMDEN LANDFILL II | SAND | HAMDEN | 03 | NEW HAVEN |
| 215 | HAMILTON SUNDSTRAND | RCRA | Windsor Locks | 01 | Hartford |
| 216 | HANDY & HARMAN - FAIRFIELD | RCRA | Fairfield | 04 | Fairfield |
| 217 | HARCO PROPERTY | SAND | WILTON | 05 | FAIRFIELD |
| 218 | HARPER LEADER INC. | RCRA | Waterbury | 05 | New Haven |
| 219 | HART PROPERTY | BF | Plymouth | 05 | Litchfield |
| 220 | HARTFORD BALL COMPANY | SAND | ROCKY HILL | 01 | HARTFORD |
| 221 | HARTFORD CAR WASH | BF | Hartford | 01 | Hartford |
| 222 | HARTFORD SPECIAL MACHINERY | SAND | SIMSBURY | 06 | HARTFORD |
| 223 | HARTT PROPERTY | SAND | NORTH BRANFORD | 03 | NEW HAVEN |
| 224 | HARVEY HUBBELL, INC. | SAND | NEWTOWN | 05 | FAIRFIELD |
| 225 | HAYES, INC. (FORMER) | SAND | FARMINGTON | 06 | HARTFORD |
| 226 | HEALY-SMITH ASBESTOS SITE | SAND | TORRINGTON | 06 | LITCHFIELD |
| 227 | HEMINWAY & BARTLETT MANUFACTURING | SAND | WATERTOWN | 06 | LITCHFIELD |
| 228 | HENKEL CORP | RCRA | Newington | 01 | Hartford |
| 229 | HICKS & OTIS PRINTS, INC. | SAND | NORWALK | 04 | FAIRFIELD |
| 230 | HIGHLINE PRODUCTS | SAND | OLD SAYBROOK | 02 | MIDDLESEX |
| 231 | HIMMEL BROTHERS | SAND | HAMDEN | 03 | NEW HAVEN |
| 232 | HOCKANUM MILL | BF | Vernon | 02 | Tolland |
| 233 | HOLLY HOCK ISLAND | SAND | NORWICH | 02 | NEW LONDON |
| 234 | HONEYWELL SKINNER | RCRA | New Britain | 05 | Hartford |
| 235 | HOWE FURNITURE CORP. | RCRA | Norwalk | 04 | Fairfield |
| 236 | HUBBARD HALL CHEMICAL, INC. | SAND | WATERBURY | 03 | NEW HAVEN |
| 237 | HULL DYE & PRINT WORKS | SAND | DERBY | 05 | NEW HAVEN |
| 238 | HURLEY MANUFACTURING COMPANY, THE | SAND | NEW HARTFORD | 06 | LITCHFIELD |
| 239 | H.J. MILLS BOX FACTORY | BF | Bristol | 01 | Hartford |
| 240 | IDEAL PRODUCTS LLC | RCRA | Beacon Falls | 03 | New Haven |
| 241 | ILLUSTRATED PRINTING COMPANY | SAND | HADDAM | 02 | MIDDLESEX |
| 242 | IMO INDUSTRIES, INC. | SAND | FAIRFIELD | 04 | FAIRFIELD |
| 243 | INTERNATIONAL SILVER FACTORY | BF | Meriden | 05 | New Haven |
| 244 | INTERROYAL MILL | BF | Plainfield | 02 | Windham |
| 245 | ISELI | RCRA | Terryville, Plymouth | 05 | Litchfield |
| 246 | ITW WATERBURY BUCKLE | RCRA | Waterbury | 05 | New Haven |
| 247 | IVANHOE CORPORATION | SAND | BRISTOL | 06 | HARTFORD |
| 248 | J FRAGALE PROPERTY | SAND | WINCHESTER | 01 | LITCHFIELD |
| 249 | J & S METALS | SAND | BRISTOL | 06 | HARTFORD |
| 250 | JACOBS MANUFACTURING COMPANY, THE | SAND | WEST HARTFORD | 01 | HARTFORD |
| 251 | JEFFERSON GARDEN APARTMENTS | SAND | NEW LONDON | 02 | NEW LONDON |
| 252 | JOB PLATING | SAND | PLAINVILLE | 06 | HARTFORD |
| 253 | JONES & LAUGHLIN STEEL | SAND | WINDHAM | 02 | WINDHAM |
| 254 | J.F. FREDERICK TOOL COMPANY, INC. | SAND | FARMINGTON | 06 | HARTFORD |
| 255 | KALADISH WASTE DISPOSAL | SAND | NAUGATUCK | 05 | NEW HAVEN |
| 256 | KALART VICTOR CORPORATION | SAND | PLAINVILLE | 06 | HARTFORD |
| 257 | KAMAN AEROSPACE- BLOOMFIELD | RCRA | Bloomfield | 01 | Hartford |
| 258 | KAMAN AEROSPACE - MOOSUP | RCRA | Moosup | 02 | Windham |
| 259 | KANTHAL CORP. | RCRA | Bethel | 05 | Fairfield |
| 260 | KAPINOS PROPERTY | SAND | WILLINGTON | 02 | TOLLAND |
| 261 | KELLOGG-DEERING WELL FIELD | NPL | Norwalk | 04 | Fairfield |
| 262 | KENDALL COMPANY | SAND | WINDHAM | 02 | WINDHAM |
| 263 | KENDRO LABORATORY PRODUCTS (SORVALL) | RCRA | Newtown | 05 | Fairfield |
| 264 | KING INDUSTRIES, INC. | SAND | NORWALK | 04 | FAIRFIELD |
| 265 | KLOCK MACHINE COMPNAY | SAND | MANCHESTER | 01 | HARTFORD |
| 266 | KOGUT'S NURSERY | SHORT | SUFFIELD | 06 | HARTFORD |
| 267 | KRAS TOOL & MACHINE COMPANY | SAND | WOLCOTT | 05 | NEW HAVEN |
| 268 | KRODEL FOUNDRY | SAND | WATERBURY | 03 | NEW HAVEN |
| 269 | LANDMARK FARM & GARDEN | SHORT | North Haven | 03 | New Haven |
| 270 | LAUREL PARK, INC. | NPL | Naugatuck | 03 | New Haven |
| 271 | LEWIS CORPORATION | SAND | OXFORD | 05 | NEW HAVEN |
| 272 | LEWIS CORPORATION | SAND | WOODBURY | 06 | LITCHFIELD |
| 273 | LIC WAREHOUSE REALTY CO INC | RCRA | Bristol | 01 | Hartford |
| 274 | LIGHT METALS COLORING | RCRA | Southington | 01 | Hartford |
| 275 | LIGHTOLIER | RCRA | Norwich | 02 | New London |
| 276 | LINEMASTER SWITCH CORPORATION | NPL | Woodstock | 02 | Windham |
| 277 | LISBON DOT GARAGE | SAND | LISBON | 02 | NEW LONDON |
| 278 | LISBON TEXTILE PRINTS, INC. | SAND | LISBON | 02 | NEW LONDON |
| 279 | LOOS & CO, INC. | SAND | POMFRET | 02 | WINDHAM |
| 280 | LYDALL, INC. | SAND | MANCHESTER | 01 | HARTFORD |
| 281 | M S CHAMBERS & SON | SAND | SPRAGUE | 02 | NEW LONDON |
| 282 | MACDERMID INC. | RCRA | Waterbury | 05 | New Haven |
| 283 | MALLEABLE IRON FITTINGS | SHORT | BRANFORD | 03 | NEW HAVEN |
| 284 | MALLORY HAT FACTORY (FORMER) | SHORT | DANBURY | 05 | FAIRFIELD |
| 285 | MALLORY INDUSTRIES, INC. | SAND | FARMINGTON | 06 | HARTFORD |
| 286 | MANCHESTER SANITARY LANDFILL | SAND | MANCHESTER | 01 | HARTFORD |
| 287 | MAPLE STREET CORPORATION | SHORT | BRIDGEPORT | 04 | FAIRFIELD |
| 288 | MAREK PROPERTY | SAND | SOUTHINGTON | 06 | HARTFORD |
| 289 | MARINO PROPERTY | SAND | MIDDLETOWN | 02 | MIDDLESEX |
| 290 | MARLBOROUGH DUMP | SAND | MARLBOROUGH | 01 | MIDDLESEX |
| 291 | MAS PROPERTY / CITY TRUST SITE | BF | Shelton | 04 | Fairfield |
| 292 | MASTRIANNI GRAVEL PIT | SAND | SOUTHINGTON | 06 | HARTFORD |
| 293 | MATTACO (BOUTIN LORETTA/MATTATUCK MFG.) | RCRA | Waterbury | 05 | New Haven |
| 294 | MCGRAW EDISON CO BUSSMANN DIV | RCRA | Bristol | 01 | Hartford |
| 295 | MEDALLIC ART | RCRA | Danbury | 05 | Fairfield |
| 296 | MESCO, INC. | SAND | MILFORD | 02 | NEW HAVEN |
| 297 | METAL FINISHING TECHNOLOGIES | RCRA | Forestville, Bristol | 01 | Hartford |
| 298 | METRO NORTH FACILITY | SAND | NEW HAVEN | 03 | NEW HAVEN |
| 299 | METROPOLITAN METAL FINISHING | SHORT | HAMDEN | 03 | NEW HAVEN |
| 300 | MICRON COMPANY | SAND | BERLIN | 01 | HARTFORD |
| 301 | MICROTECH, INC. | RCRA | Cheshire | 05 | New Haven |
| 302 | MIDDLESEX COMMUNITY COLLEGE BROWNFIELDS PROGRAM | BF | Middletown | 03 | Middlesex |
| 303 | MIDDLETOWN STATION | RCRA | Middletown | 03 | Middlesex |
| 304 | MIKON PRODUCTS | SAND | OXFORD | 05 | NEW HAVEN |
| 305 | MILFORD RIVET & MACHINE | SAND | MILFORD | 02 | NEW HAVEN |
| 306 | MIRROR POLISHING & PLATING COMP | RCRA | Waterbury | 03 | New Haven |
| 307 | MITRAL CORPORATION | SAND | HARWINTON | 06 | LITCHFIELD |
| 308 | MODOC TOWN DUMP | SAND | PUTNAM | 02 | WINDHAM |
| 309 | MOHEGAN TRIBE OF INDIANS (NAVAL PRODUCTS) | RCRA | Uncasville | 02 | New London |
| 310 | MONTVILLE STATION | RCRA | Montville | 02 | New London |
| 311 | MORLAND VALVE | SAND | MANCHESTER | 01 | HARTFORD |
| 312 | MOSS AMERICAN, INC. | SAND | NORTH HAVEN | 03 | NEW HAVEN |
| 313 | MOTT METALLURGICAL COMPANY | SAND | PLAINVILLE | 06 | HARTFORD |
| 314 | M.H. RHODES | RCRA | Old Saybrook | 02 | Middlesex |
| 315 | M.H. RHODES, INC. | SAND | AVON | 06 | HARTFORD |
| 316 | NATIONAL CHROMIUM | RCRA | Putnam | 02 | Windham |
| 317 | NATIONAL OIL SERVICES | SHORT | WEST HAVEN | 03 | NEW HAVEN |
| 318 | NATIONAL WELDING AND MANUFACTURING | SAND | NEWINGTON | 01 | HARTFORD |
| 319 | NAUGATUCK BROWNFIELDS PROGRAM | BF | Naugatuck | 03 | New Haven |
| 320 | NAVAL UNDERWATER SYSTEMS CENTER | SAND | EAST LYME | 02 | New London |
| 321 | NEW BRITAIN INDUSTRIAL WASTE AREA | SAND | BERLIN | 01 | HARTFORD |
| 322 | NEW ENGLAND AIRCRAFT PLANT #1 | SAND | FARMINGTON | 06 | HARTFORD |
| 323 | NEW ENGLAND WOODCRAFTING | SAND | VERNON | 02 | TOLLAND |
| 324 | NEW HAVEN HARBOR STATION | RCRA | New Haven | 03 | New Haven |
| 325 | NEW LONDON SUBMARINE BASE | NPL | Groton and Ledyard | 02 | New London |
| 326 | NEW LONDON TEXTILE PRINT | SAND | WATERFORD | 02 | NEW LONDON |
| 327 | NEW MILFORD LANDFILL | SAND | NEW MILFORD | 06 | LITCHFIELD |
| 328 | NEWHALL STREET FIELD | SAND | HAMDEN | 03 | NEW HAVEN |
| 329 | NEWTOWN LANDFILL | SAND | NEWTOWN | 05 | FAIRFIELD |
| 330 | NEWTOWN LANDFILL (INACTIVE) | SAND | NEWTOWN | 05 | FAIRFIELD |
| 331 | NITE BRITE SIGN COMPANY, INC. | SAND | MONROE | 05 | FAIRFIELD |
| 332 | NORANDA METAL INDUSTRIES | SAND | NEWTOWN | 05 | FAIRFIELD |
| 333 | NORTH EAST UTILITIES | SAND | BRISTOL | 06 | HARTFORD |
| 334 | NORTH END DISPOSAL AREA | SAND | WATERBURY | 03 | NEW HAVEN |
| 335 | NORTH STAR CENTER FOR HUMAN DEVELOPMENT, INC. BROWNFIELDS PROGRAM | BF | Hartford | 01 | Hartford |
| 336 | NORTH & JUDD INC | RCRA | Middletown | 03 | Middlesex |
| 337 | NORTH & JUDD, INC. | RCRA | Middletown | 03 | Middlesex |
| 338 | NORTHEAST ELECTRONICS CORP | RCRA | Milford | 03 | New Haven |
| 339 | NORTHEAST UTILITIES | SAND | DANBURY | 05 | FAIRFIELD |
| 340 | NORTHEAST UTILITIES | SAND | NORWALK | 04 | FAIRFIELD |
| 341 | NORTHEAST UTILITIES | SAND | SHELTON | 05 | FAIRFIELD |
| 342 | NORTHEAST UTILITIES | SAND | VERNON | 02 | TOLLAND |
| 343 | NORTHEAST UTILITIES | SAND | WALLINGFORD | 03 | NEW HAVEN |
| 344 | NORTHEAST UTILITIES | SAND | WATERBURY | 03 | NEW HAVEN |
| 345 | NORTHEAST UTILITIES | SAND | WINDHAM | 02 | WINDHAM |
| 346 | NORTHEAST UTILITIES (FRMR COAL GASIF.) | SAND | PUTNAM | 02 | WINDHAM |
| 347 | NORWALK HARBOR STATION | RCRA | Norwalk | 04 | Fairfield |
| 348 | NORWALK LANDFILL | SAND | NORWALK | 04 | FAIRFIELD |
| 349 | NORWALK POWDERED METALS | SAND | NORWALK | 04 | FAIRFIELD |
| 350 | NORWALK REDEVELOPMENT AGENCY BROWNFIELDS PROGRAM | BF | Norwalk | 04 | Fairfield |
| 351 | NSI UTC (NORDEN SYSTEMS) | RCRA | Norwalk | 04 | Fairfield |
| 352 | NUCLEAR TECHNOLOGY CORPORATION | SAND | HEBRON | 01 | TOLLAND |
| 353 | NUTMEG VALLEY ROAD | NPL | Wolcott | 05 | New Haven |
| 354 | O'SULLIVAN'S ISLAND | SAND | DERBY | 05 | NEW HAVEN |
| 355 | O'SULLIVANS ISLAND | BF | Derby | 03 | New Haven |
| 356 | OCCUM ROTO PRINT | BF | Norwich | 02 | New London |
| 357 | OLD SOUTHINGTON LANDFILL | NPL | Southington | 01 | Hartford |
| 358 | OLIN CORP | RCRA | Middletown | 03 | Middlesex |
| 359 | OLSON BROTHERS COMPANY | SAND | PLAINVILLE | 06 | HARTFORD |
| 360 | OSLO CONTROL | SAND | CHESHIRE | 05 | NEW HAVEN |
| 361 | O&G INDUSTRIES | RCRA | Bridgeport | 04 | Fairfield |
| 362 | PACELLI TRUCKING | BF | Bridgeport | 02 | Fairfield |
| 363 | PACKER ROAD LANDFILL | SAND | CANTERBURY | 02 | WINDHAM |
| 364 | PAPISH, INC. | SAND | DANBURY | 05 | FAIRFIELD |
| 365 | PEERLESS SCREW | SAND | CHESHIRE | 05 | NEW HAVEN |
| 366 | PENN CENTRAL TRANSPORTATION | BF | New London | 02 | New London |
| 367 | PERKIN ELMER CORPORATION | SAND | WILTON | 05 | FAIRFIELD |
| 368 | PFIZER, INC. | SAND | LEDYARD | 02 | NEW LONDON |
| 369 | PHARMACIA & UPJOHN | RCRA | North Haven | 03 | New Haven |
| 370 | PHARMACIA & UPJOHN (DOW LABORATORY) | RCRA | North Haven | 03 | New Haven |
| 371 | PHILLIPS PROPERTY | SAND | MERIDEN | 05 | NEW HAVEN |
| 372 | PINE SWAMP (OLIN CORPORATION) | SAND | HAMDEN | 03 | NEW HAVEN |
| 373 | PIONEER PRODUCTS - 1 | SAND | EAST HADDAM | 02 | WINDHAM |
| 374 | PLAINVILLE LANDFILL | RCRA | Plainville | 05 | Hartford |
| 375 | PLAINVILLE PLATING | RCRA | Plainville | 05 | Hartford |
| 376 | PLINY STREET (76-80) | SHORT | HARTFORD | 01 | HARTFORD |
| 377 | PORTLAND CHEMICAL WORKS | BF | Middletown | 03 | Middlesex |
| 378 | PORTLAND MUNICIPAL LANDFILL | SAND | PORTLAND | 01 | MIDDLESEX |
| 379 | PORTLAND SAND PIT | SAND | PORTLAND | 01 | MIDDLESEX |
| 380 | POST NARROW FABRICS COMPANY | SAND | ANDOVER | 02 | TOLLAND |
| 381 | POWER SEMICONDUCTOR (M&R REALTY) | RCRA | Milford | 03 | New Haven |
| 382 | PRATT & WHITNEY - COLT STREET | RCRA | East Hartford | 01 | Hartford |
| 383 | PRATT & WHITNEY - FORMER OVERHAUL & REPAIR OPERATIONS | RCRA | Southington | 01 | Hartford |
| 384 | PRATT & WHITNEY - MAIN STREET | RCRA | East Hartford | 01 | Hartford |
| 385 | PRATT & WHITNEY - PENT ROAD | RCRA | East Hartford | 01 | Hartford |
| 386 | PRATT & WHITNEY - ROCKY HILL | RCRA | Rocky Hill | 01 | Hartford |
| 387 | PRATT & WHITNEY AIRCRAFT - NORTH HAVEN | RCRA | North Haven | 03 | New Haven |
| 388 | PRECISION PLATING CORP. | NPL | Vernon | 02 | Tolland |
| 389 | PROGRESSIVE PLATING | SHORT | Bridgeport | 04 | Fairfield |
| 390 | PRYM | RCRA | Dayville | 02 | Windham |
| 391 | PUTNAM DOT GARAGE | SAND | PUTNAM | 02 | WINDHAM |
| 392 | PUTNAM TOWN LANDFILL | RCRA | Putnam | 02 | Windham |
| 393 | QUALITY NAME PLATE | SAND | GLASTONBURY | 01 | HARTFORD |
| 394 | QUINIQUACK FARM | SAND | KILLINGLY | 02 | WINDHAM |
| 395 | QUINLAN RUSSELL | RCRA | Meriden | 05 | New Haven |
| 396 | R A M CHROMIUM CORPORATION | SAND | WILLINGTON | 02 | TOLLAND |
| 397 | R & N TIRE AND AUTO CENTER | SAND | EAST GRANBY | 06 | HARTFORD |
| 398 | RAPID ELECTRIC COMPANY, INC. | SAND | BROOKFIELD | 05 | FAIRFIELD |
| 399 | RAYEX | SAND | PLAINVILLE | 06 | HARTFORD |
| 400 | RAYMARK INDUSTRIES | NPL | Stratford | 03 | Fairfield |
| 401 | REDDING MUNICIPAL LANDFILL | SAND | REDDING | 05 | FAIRFIELD |
| 402 | REFUSE GARDENS | SAND | ELLINGTON | 02 | TOLLAND |
| 403 | REGIONAL GROWTH PARTNERSHIP BROWNFIELDS PROGRAM | BF | Bethany, Branford, East Haven, Guilford, Hamden, Madison, Milford, New Haven, North Branford, North Haven, Orange, Wallingford, West Haven, Woodbridge | 02 03 05 | New Haven |
| 404 | REVERE TEXTILE PRINTS CORPORATION | NPL | Sterling | 02 | Windham |
| 405 | RISDON CORP. | RCRA | Danbury | 05 | Fairfield |
| 406 | ROBERT SHAW CONTROLS CO | RCRA | Milford | 03 | New Haven |
| 407 | ROGERS CORP. - ROGERS | RCRA | Rogers | 02 | Windham |
| 408 | ROGERS CORP. - S. WINDHAM | RCRA | Windham | 02 | Windham |
| 409 | ROGERS MANUFACTURING COMPANY | SAND | MIDDLEFIELD | 02 | MIDDLESEX |
| 410 | ROLFITE CHEMICAL | BF | Shelton | 04 | Fairfield |
| 411 | RONCARI TRAP ROCK QUARRY | SAND | EAST GRANBY | 06 | HARTFORD |
| 412 | ROOSEVELT MILLS | BF | Vernon | 02 | Tolland |
| 413 | ROSEM | SHORT | HAMDEN | 03 | NEW HAVEN |
| 414 | ROSER TANNERY | SAND | GLASTONBURY | 01 | HARTFORD |
| 415 | ROY MACHINERY AND SALES | SAND | FARMINGTON | 06 | HARTFORD |
| 416 | ROYAL MACHINE & TOOL | SAND | BERLIN | 01 | HARTFORD |
| 417 | RYE HILL CIRCLE - CONNECTICUT CORRECTIONAL INDUSTRIES | SAND | SOMERS | 03 | TOLLAND |
| 418 | RYE PESTICIDE SITE | SAND | EAST WINDSOR | 01 | HARTFORD |
| 419 | RYTHER PURDY LUMBER COMPANY | SAND | OLD SAYBROOK | 02 | MIDDLESEX |
| 420 | R.P. OLSON AND SON COMPANY | SAND | SOUTHINGTON | 06 | HARTFORD |
| 421 | R.R. DONNELLEY & SONS COMPANY | SAND | OLD SAYBROOK | 02 | MIDDLESEX |
| 422 | SAFETY KLEEN CORP. - BRANFORD | RCRA | Branford | 03 | New Haven |
| 423 | SAFETY KLEEN CORP. - PLAINFIELD | RCRA | Plainfield | 02 | Windham |
| 424 | SAFETY KLEEN CORP. - W. HARTFORD | RCRA | West Hartford | 01 | Hartford |
| 425 | SAFEWAY PRODUCTS, INC. | SAND | CROMWELL | 01 | MIDDLESEX |
| 426 | SAMARIUS PROPERTY | BF | Shelton | 04 | Fairfield |
| 427 | SANITARY DASH | RCRA | North Grosvenordale | 02 | Windham |
| 428 | SATIN AMERICAN CORPORATION | SAND | SHELTON | 05 | FAIRFIELD |
| 429 | SAYBROOKE STRIP SHOP | SAND | OLD SAYBROOK | 02 | MIDDLESEX |
| 430 | SCHICK WILKINSON SWORD | RCRA | Milford | 03 | New Haven |
| 431 | SCOFIELDTOWN ROAD PARK | SAND | STAMFORD | 04 | FAIRFIELD |
| 432 | SCOVILL INDUSTRIAL LANDFILL | NPL | Waterbury | 05 | New Haven |
| 433 | SEASIDE PARK LANDFILL | RCRA | Bridgeport | 04 | Fairfield |
| 434 | SEYMOUR BRASS TURNING | SAND | SEYMOUR | 05 | NEW HAVEN |
| 435 | SEYMOUR SPECIALTY WIRE | SAND | SEYMOUR | 05 | NEW HAVEN |
| 436 | SHELTON CLOSED DUMP | SAND | SHELTON | 05 | FAIRFIELD |
| 437 | SHELTON RUBBER DUMP | SAND | SHELTON | 05 | FAIRFIELD |
| 438 | SHERWOOD MEDICAL COMPANY | SAND | WATERBURY | 05 | NEW HAVEN |
| 439 | SHORE CHEMICAL | SAND | MADISON | 03 | NEW HAVEN |
| 440 | SIBLEY COMPANY | RCRA | Haddam | 02 | Middlesex |
| 441 | SIKORSKY AIRCRAFT - BRIDGEPORT | RCRA | Bridgeport | 04 | Fairfield |
| 442 | SIKORSKY AIRCRAFT - STRATFORD | RCRA | Stratford | 03 | Fairfield |
| 443 | SIMSBURY TOWN LANDFILL | SAND | SIMSBURY | 06 | HARTFORD |
| 444 | SOLVENTS RECOVERY SERVICE OF NEW ENGLAND | NPL | Southington | 01 | Hartford |
| 445 | SOMERS INDUSTRIAL | RCRA | Somers | 02 | Tolland |
| 446 | SON-WAY CORPORATION | SAND | NEWINGTON | 01 | HARTFORD |
| 447 | SONECO SERVICE | SAND | GROTON | 02 | NEW LONDON |
| 448 | SOUTH CENTRAL REGIONAL COUNCIL OF GOVERNMENTS BROWNFIELDS PROGRAM | BF | Bethany, Branford, East Haven, Guilford, Hamden, Madison, Meriden, Milford, New Haven, North Branford, North Haven, Orange, Wallingford, West Haven, Woodbridge | 02 03 05 | New Haven |
| 449 | SOUTH END DISPOSAL AREA | SAND | WATERBURY | 05 | NEW HAVEN |
| 450 | SOUTH WINDHAM LANDFILL | SAND | WINDHAM | 02 | WINDHAM |
| 451 | SOUTHBURY MUNICIPAL LANDFILL | SAND | SOUTHBURY | 06 | NEW HAVEN |
| 452 | SOUTHDOWN | RCRA | Bristol | 01 | Hartford |
| 453 | SOUTHINGTON MANUFACTURING (CHEROKEE) | RCRA | Southington | 01 | Hartford |
| 454 | SOUTHINGTON TOWN LANDFILL | RCRA | Southington | 01 | Hartford |
| 455 | SOUTHWIRE COMPANY | RCRA | Jewett City | 02 | New London |
| 456 | SPECIFICATIONS PLATING | RCRA | Bridgeport | 04 | Fairfield |
| 457 | SPERRY SEMICONDUCTOR | SAND | NORWALK | 04 | FAIRFIELD |
| 458 | SPIROL INTERNATIONAL | RCRA | Danielson | 02 | Windham |
| 459 | SPORTING GOODS PROPERTIES, INC. | RCRA | Bridgeport | 04 | Fairfield |
| 460 | SPRAGUE TOWN DISPOSAL FACILITY | SAND | SPRAGUE | 02 | NEW LONDON |
| 461 | STAFFORD MUNICIPAL LANDFILL | SAND | STAFFORD | 02 | TOLLAND |
| 462 | STARBUCK SPRAGUE, INC. | SAND | WATERBURY | 02 | NEW HAVEN |
| 463 | STERLING DOT GRAVEL BANK | SAND | STERLING | 02 | WINDHAM |
| 464 | STEVENS COMPANY, INC. | SAND | THOMASTON | 06 | LITCHFIELD |
| 465 | STEVENS PAPER MILL | SAND | WINDSOR | 01 | HARTFORD |
| 466 | STRATFORD ARMY ENGINE PLANT | RCRA | STRATFORD | 03 | Fairfield |
| 467 | STRATFORD ASBESTOS SITE | SHORT | STRATFORD | 03 | FAIRFIELD |
| 468 | SUBURBAN EXCAVATORS | SAND | CHESHIRE | 05 | NEW HAVEN |
| 469 | SUMMIT CORP. | RCRA | Thomaston | 05 | Litchfield |
| 470 | SUNNYBROOK STATE PARK | SHORT | TORRINGTON | 06 | LITCHFIELD |
| 471 | SUPERIOR STEEL PRODUCTS CORPORATION | SAND | CHESHIRE | 05 | NEW HAVEN |
| 472 | SUSAN BATES | RCRA | Chester | 02 | New Haven |
| 473 | SWAN ENGRAVING | BF | Bridgeport | 04 | Fairfield |
| 474 | SWIFT ADHESIVES AND COATINGS | SAND | WEST HAVEN | 03 | NEW HAVEN |
| 475 | SWIFT J. CHEMICAL COMPANY | SAND | CANTON | 06 | HARTFORD |
| 476 | SWIFT & SONS, INC. | RCRA | Hartford | 01 | Hartford |
| 477 | SYNTHETIC PRODUCTS | RCRA | Stratford | 03 | Fairfield |
| 478 | S. GOLDFEDER, INC. | SAND | WALLINGFORD | 03 | NEW HAVEN |
| 479 | TECH SYSTEMS CORP. | RCRA | Thomaston | 05 | Litchfield |
| 480 | TEKNICIRCUITS, INC. | RCRA | Danbury | 05 | Fairfield |
| 481 | THE WORKPLACE INC. BROWNFIELDS PROGRAM | BF | Bridgeport | 04 | Fairfield |
| 482 | THOMASTON LANDFILL | SAND | THOMASTON | 06 | LITCHFIELD |
| 483 | THOMPSON DOT GARAGE | SAND | THOMPSON | 02 | WINDHAM |
| 484 | THOMPSON TOWN LANDFILL | RCRA | North Grosvenordale | 02 | Windham |
| 485 | TIMEX CORP. | RCRA | Middlebury | 05 | New Haven |
| 486 | TOLLAND LANDFILL | SAND | TOLLAND | 02 | TOLLAND |
| 487 | TORRINGTON LANDFILL | RCRA | Torrington | 01 | Litchfield |
| 488 | TOWN OF BERLIN BROWNFIELDS PROGRAM | BF | Berlin | 01 | Hartford |
| 489 | TOWN OF EAST HAMPTON BROWNFIELDS PROGRAM | BF | East Hampton | 02 | Middlesex |
| 490 | TOWN OF GREENWICH BROWNFIELDS PROGRAM | BF | Greenwich | 04 | Fairfield |
| 491 | TOWN OF GRISWOLD BROWNFIELDS PROGRAM | BF | Griswold | 02 | New London |
| 492 | TOWN OF HADDAM BROWNFIELDS PROGRAM | BF | Haddam | 02 | Middlesex |
| 493 | TOWN OF NEW MILFORD BROWNFIELDS PROGRAM | BF | New Milford | 05 | Litchfield |
| 494 | TOWN OF NEWINGTON BROWNFIELDS PROGRAM | BF | Newington | 02 | Hartford |
| 495 | TOWN OF NEWTOWN BROWNFIELDS PROGRAM | BF | Newtown | 05 | Fairfield |
| 496 | TOWN OF SPRAGUE BROWNFIELDS PROGRAM | BF | Baltic | 02 | New London |
| 497 | TOWN OF WINCHESTER/CITY OF WINSTED BROWNFIELDS PROGRAM | BF | Winsted | 06 | Windham |
| 498 | TRI-CITY PLAZA | SAND | VERNON | 02 | TOLLAND |
| 499 | TYLER AUTOMATICS | SAND | THOMASTON | 06 | LITCHFIELD |
| 500 | UNIROYAL CHEMICAL | RCRA | Naugatuck | 03 | New Haven |
| 501 | UNIV OF CONNECTICUT LANDFILL/WASTE PITS | SAND | MANSFIELD | 05 | TOLLAND |
| 502 | US DEPT. OF ENERGY - KNOLLS ATOMIC POWER LABORATORY | RCRA | Windsor | 01 | Hartford |
| 503 | USM FASTNER GROUP | SAND | SHELTON | 05 | FAIRFIELD |
| 504 | UTC - PRATT & WHITNEY | RCRA | Middletown | 03 | Middlesex |
| 505 | U.S. CAP AND JACKET | BF | PROSPECT | 05 | NEW HAVEN |
| 506 | U.S. CHEMICAL CORPORATION (FORMER) | SAND | CHESHIRE | 05 | NEW HAVEN |
| 507 | VALLEY COUNCIL OF GOVERNMENTS BROWNFIELDS PROGRAM | BF | Ansonia, Beacon Falls, Derby, Naugatuck, Oxford, Seymour, Thomaston, Waterbury, Watertown | 03 04 05 | Litchfield, New Haven |
| 508 | VANDERBILT CHEMICAL | RCRA | Bethel | 05 | Fairfield |
| 509 | VERPLEX COMPANY | SAND | ESSEX | 02 | MIDDLESEX |
| 510 | VILLAGE STRIPPER | SAND | HEBRON | 01 | TOLLAND |
| 511 | VIRGINIA INDUSTRIES INC. (HOLGRATH MEDICAL TECHNOLOGIES) | RCRA | Cheshire | 05 | New Haven |
| 512 | VITEK COMPANY | SAND | SHELTON | 05 | FAIRFIELD |
| 513 | VITRAMON INC. | RCRA | Monroe | 04 | Fairfield |
| 514 | WALL OF AMERICA FOUNDATION BROWNFIELDS PROGRAM | BF | Sharon | 01 | Litchfield |
| 515 | WAMPUS MILFORD ASSOC./ EATON AND SLOAN | RCRA | Milford | 03 | New Haven |
| 516 | WARING PRODUCTS | RCRA | New Hartford | 05 | Litchfield |
| 517 | WASLEY LIGHTING COMPANY/AMF CORPORATION | SAND | ESSEX | 02 | MIDDLESEX |
| 518 | WATERBURY CENTERLESS GRINDING COMPANY | SAND | SOUTHINGTON | 06 | HARTFORD |
| 519 | WATERBURY COMPANIES | RCRA | Waterbury | 05 | New Haven |
| 520 | WATERBURY ROLLING MILLS | RCRA | Waterbury | 05 | New Haven |
| 521 | WATERTOWN TOWN LANDFILL | RCRA | Watertown | 05 | Litchfield |
| 522 | WESTON LANDFILL TOWN OF | SAND | WESTON | 04 | FAIRFIELD |
| 523 | WESTPORT LANDFILL/LIBRARY | SAND | WESTPORT | 04 | FAIRFIELD |
| 524 | WESTVACO CORPORATION | SAND | MERIDEN | 05 | NEW HAVEN |
| 525 | WHITCRAFT CORPORATION | SAND | EASTFORD | 02 | WINDHAM |
| 526 | WHITNON-SPINDLE | SAND | FARMINGTON | 06 | HARTFORD |
| 527 | WHYCO CHROMIUM | RCRA | Thomaston | 05 | Litchfield |
| 528 | WILBUR CROSS COMMONS BUSINESS PARK | SAND | HAMDEN | 03 | NEW HAVEN |
| 529 | WILKINSON CHEMICALS | SAND | NORTH HAVEN | 03 | NEW HAVEN |
| 530 | WILLINGTON DOT GARAGE | SAND | WILLINGTON | 02 | TOLLAND |
| 531 | WILLINGTON MUNICIPAL LANDFILL | SAND | WILLINGTON | 02 | TOLLAND |
| 532 | WILTON LANDFILL | SAND | WILTON | 05 | FAIRFIELD |
| 533 | WIN MANUFACTURING COMPANY, INC. | SAND | EAST HAVEN | 03 | NEW HAVEN |
| 534 | WINCHESTER ELECTRONICS | SAND | WATERTOWN | 06 | LITCHFIELD |
| 535 | WINCHESTER LANDFILL | SAND | WINCHESTER | 01 | LITCHFIELD |
| 536 | WINDHAM MUNICIPAL DUMP | SAND | WINDHAM | 02 | WINDHAM |
| 537 | WINDSOR BLOOMFIELD LANDFILL | RCRA | Windsor | 01 | Hartford |
| 538 | WINDSOR MANUFACTURING | RCRA | Windsor | 01 | Hartford |
| 539 | WOLCOTT MUNICIPAL LANDFILL | SAND | WOLCOTT | 05 | NEW HAVEN |
| 540 | YALESVILLE SILVER COMPANY | SHORT | WALLINGFORD | 03 | NEW HAVEN |
| 541 | YANKEE ELECTRONIC SERVICES, INC. | SAND | BETHEL | 05 | FAIRFIELD |
| 542 | YAWORSKI WASTE LAGOON | NPL | Canterbury Township | 02 | Windham |
| 543 | YSG PROPERTIES | SAND | COVENTRY | 02 | TOLLAND |
| 544 | ZOLLO DRUM COMPANY | SAND | BEACON FALLS | 05 | NEW HAVEN |