| Site Name | State | City | C.D. | County |
| 1 | 21st CENTURY ENVIRONMENTAL MANAGEMENT | RI | Warwick | 02 | Kent |
| 2 | ACME RIVET & MACHINE | CT | Bristol | 01 | Hartford |
| 3 | ACUSHNET TITLEIST BALL PLANT 1 | MA | Acushnet | 04 | Bristol |
| 4 | AGENCY REALTY (CARROLL PRODUCTS) | RI | Wood River Junction, Richmond | 02 | Washington |
| 5 | AHLSTROM DEXTER - AMERICAN WRITING | CT | Windsor Locks | 01 | Hartford |
| 6 | AHLSTROM DEXTER - MAIN PLANT | CT | Windsor Locks | 01 | Hartford |
| 7 | AMERICAN HOIST & DERRICK | ME | Portland | 01 | Cumberland |
| 8 | ARCH CHEMICALS INC | CT | Cheshire | 03 | New Haven |
| 9 | ARCH SPECIALTY CHEMICALS INC | RI | Lincoln | 01 | Providence |
| 10 | ASHCROFT INC | CT | Stratford | 02 | Fairfield |
| 11 | ATF DAVIDSON CO INC | MA | Northbridge | 02 | Worcester |
| 12 | AUTO SWAGE PRODUCTS INC | CT | Shelton | 03 | Fairfield |
| 13 | AXTON CROSS CO | MA | Holliston | 03 | Middlesex |
| 14 | BALL & SOCKET | CT | Cheshire | 05 | New Haven |
| 15 | BANTAM RIVER CORP PARK LLC | CT | Litchfield | 05 | Litchfield |
| 16 | BASF CATALYST LLC | MA | Plainville | 03 | Norfolk |
| 17 | BASS PLATING | CT | Bloomfield | 01 | Hartford |
| 18 | BATH IRON WORKS- HARDINGS FACILITY | ME | Brunswick | 01 | Cumberland |
| 19 | BATH IRON WORKS CORP | ME | Bath | 01 | Sagadahoc |
| 20 | BEAZER EAST | NH | Nashua | 01 | Hillsborough |
| 21 | BEEBE RIVER SITE | NH | Campton | 02 | Grafton |
| 22 | BIC CORPORATION | CT | Milford | 03 | New Haven |
| 23 | BIRKEN MANUFACTURING CO | CT | Bloomfield | 01 | Hartford |
| 24 | BOSTIK | MA | Middleton | 06 | Essex |
| 25 | BOVANO | CT | Cheshire | 05 | New Haven |
| 26 | BRIDGEPORT HARBOR STATION | CT | Bridgeport | 04 | Fairfield |
| 27 | BRISTOL SANITARY LANDFILL | CT | Bristol | 01 | Hartford |
| 28 | BRONSON HOMER D CO | CT | Beacon Falls | 03 | New Haven |
| 29 | CBS (WESTINGHOUSE) | CT | Bridgeport | 04 | Fairfield |
| 30 | CEE ASSOCIATES | CT | New Milford | 05 | Litchfield |
| 31 | CENTRAL VERMONT PUBLIC SERVICE | VT | Rutland | | Rutland |
| 32 | CENTURY BRASS | CT | Waterbury | 05 | New Haven |
| 33 | CENTURY BRASS - NEW MILFORD | CT | New Milford | 05 | Litchfield |
| 34 | CENTURY BRASS - WATERBURY | CT | Waterbury | 05 | New Haven |
| 35 | CERRO FABRICATED PRODUCTS | CT | Bristol | 01 | Hartford |
| 36 | CIBA SPECIALTY CHEMICAL CORP. | RI | Cranston | 02 | Providence |
| 37 | CIBA SPECIALTY CHEMICALS | ME | Lewiston | 02 | Androscoggin |
| 38 | CLEAN HARBORS - BRAINTREE | MA | Braintree | 09 | Norfolk |
| 39 | CLEAN HARBORS - NATICK | MA | Natick | 07 | Middlesex |
| 40 | CLEAN HARBORS ANDOVER LLC | MA | Lawrence | 05 | Essex |
| 41 | CLEAN HARBORS BRODERICK ROAD | CT | Bristol | 01 | Hartford |
| 42 | COATING SYSTEMS | NH | Nashua | 02 | Hillsborough |
| 43 | COLONIAL BRONZE | CT | Torrington | 01 | Litchfield |
| 44 | COLT MANUFACTURING COMPANY | CT | Hartford | 01 | Hartford |
| 45 | COLUMBIA MANUFACTURING | MA | Westfield | 01 | Hampden |
| 46 | COMBUSTION ENGINEERING | CT | Windsor | 01 | Hartford |
| 47 | COMPONENTS INC | ME | Kennebunk | 01 | York |
| 48 | CONTRACT PLATING COMPANY, INC | CT | Stratford | 03 | Fairfield |
| 49 | CORBIN RUSSWIN | CT | Berlin | | Hartford |
| 50 | CRRA - SHELTON | CT | Shelton | 04 | Fairfield |
| 51 | CRRA - WALLINGFORD | CT | Wallingford | 03 | New Haven |
| 52 | CYN OIL CORP. | MA | Stoughton | 09 | Norfolk |
| 53 | CYRO INDUSTRIES | ME | Sanford | 01 | York |
| 54 | CYTEC INDUSTRIES COATING & PERFORMANCE | CT | Wallingford | 03 | New Haven |
| 55 | DANBURY LANDFILL | CT | Danbury | 05 | Fairfield |
| 56 | DATA GENERAL CORPORATION | ME | Westbrook | 01 | Cumberland |
| 57 | DELTA RUBBER COMPANY | CT | Danielson, Killingly | 02 | Windham |
| 58 | DEVON STATION | CT | Milford | 03 | New Haven |
| 59 | DONHAM CRAFT | CT | Naugatuck | 05 | New Haven |
| 60 | DOW CHEMICAL | CT | Gales Ferry, Ledyard | 02 | New London |
| 61 | DUPONT PHOTOMASKS | CT | Danbury | 05 | Fairfield |
| 62 | EAST COAST ENVIRONMENTAL SERVICES | CT | New Haven | 03 | New Haven |
| 63 | ECC - HOLDEN | MA | Holden | 03 | Worcester |
| 64 | ECC - STOUGHTON | MA | Stoughton | 09 | Norfolk |
| 65 | ELECTRIC BOAT CORP. - EASTERN POINT ROAD | CT | Groton | 02 | New London |
| 66 | ELECTRIC BOAT CORP. - MIDWAY | CT | Groton | 02 | New London |
| 67 | ELECTRONICS METAL FINISHING CORP | CT | Danbury | 05 | Fairfield |
| 68 | ELEMENTIS CHEMICALS INC | NH | Merrimack | 01 | Hillsborough |
| 69 | ELMET TECHNOLOGIES | ME | Lewiston | 02 | Androscoggin |
| 70 | EMHART INDUSTRIES INC. | NH | Jaffrey | 02 | Cheshire |
| 71 | ENGLEHARD CORP | ME | Eastport | 02 | Washington |
| 72 | ENPRO SERVICES OF MAINE | ME | South Portland | 01 | Cumberland |
| 73 | ENSIGN BICKFORD | CT | Simsbury | 05 | Hartford |
| 74 | ENTHONE INC | CT | West Haven | 03 | New Haven |
| 75 | ENVIRITE CORP. | CT | Thomaston | 05 | Litchfield |
| [Replication or Save Conflict] |  |  |  |  |  |
| 77 | ENVIRONMENTAL WASTE RESOURCES | CT | Waterbury | 05 | New Haven |
| 78 | ETCO CORD PRODUCTS | RI | [Unknown City] | 02 | Kent |
| 79 | EXIDE BATTERY PLANT | CT | Fairfield | 04 | Fairfield |
| 80 | FARIA, THOMAS G. | CT | Uncasville | 02 | New London |
| 81 | FERRO CORP | CT | Norwalk | 04 | Fairfield |
| 82 | FIBER MARK DSI | RI | Johnston | 02 | Providence |
| 83 | FLOW POLYMERS | CT | Stratford | 03 | Fairfield |
| 84 | FM PRECISION GOLF MFG CORP | CT | Torrington | 05 | Litchfield |
| 85 | FORESTVILLE PLATING | CT | Southington | 01 | Hartford |
| 86 | FORT BARTON HOLDINGS INC | RI | Warwick | 02 | Kent |
| 87 | FRASER PAPERS MADAWASKA MILL | ME | Madawaska | 02 | Aroostook |
| 88 | FREUDENBERG NOK GENERAL PARTNERSHIP | NH | Bristol | 02 | Grafton |
| 89 | GAR ELECTROFORMING | CT | Danbury | 05 | Fairfield |
| 90 | GBC METALS, LLC | CT | Waterbury | 05 | New Haven |
| 91 | GE SECURITY INC | ME | Pittsfield | 02 | Somerset |
| 92 | GEM MANAGEMENT INC | RI | Lincoln | 01 | Providence |
| 93 | GENERAL CHEMICAL CORP | MA | Framingham | 07 | Middlesex |
| 94 | GENERAL DATA COMM | CT | Waterbury | 05 | New Haven |
| 95 | GENERAL DYNAMICS CORPORATION | VT | Burlington | 01 | Chittenden |
| 96 | GENERAL DYNAMICS ELECTRIC BOAT CORP | RI | North Kingstown | 02 | Washington |
| 97 | GENERAL ELECTRIC - AUBURN | ME | Auburn | 02 | Androscoggin |
| 98 | GENERAL ELECTRIC - BRIDGEPORT | CT | Bridgeport | 04 | Fairfield |
| 99 | GENERAL ELECTRIC - MEDFORD | MA | Medford | 07 | Middlesex |
| 100 | GENERAL ELECTRIC - NORTH CLARENDON | VT | Rutland | 01 | Rutland |
| 101 | GENERAL ELECTRIC - PITTSFIELD | MA | Pittsfield, Lenox | 01 | Berkshire |
| 102 | GENERAL ELECTRIC AIRCRAFT ENGINES | MA | Lynn | 06 | Essex |
| 103 | GENERAL ELECTRIC WASTE WATER FACILITY | CT | Plainville | 05 | Hartford |
| 104 | GENERAL MOTORS | CT | Bristol | 01 | Hartford |
| 105 | GENRAD INC. | MA | Bolton | 05 | Worcester |
| 106 | GILBERT & BENNETT | CT | Georgetown, Redding | 04 | Fairfield |
| 107 | GTE-STANDISH | ME | Standish | 01 | Cumberland |
| 108 | GTE PRODUCTS CORP | ME | Limerick | 01 | York |
| 109 | HADDAM NECK PLANT | CT | East Hampton | 02 | Middlesex |
| 110 | HAMILTON SUNDSTRAND | CT | Windsor Locks | 01 | Hartford |
| 111 | HAMPDEN COLOR & CHEMICAL CO | MA | Springfield | 02 | Hampden |
| 112 | HAMPSHIRE CHEMICAL CORPORATION | NH | Nashua | 02 | Hillsborough |
| 113 | HANDY & HARMAN - FAIRFIELD | CT | Fairfield | 04 | Fairfield |
| 114 | HANDY & HARMAN ELECTRONIS MATERIALS CORP | MA | North Attleboro | 03 | Bristol |
| 115 | HARPER LEADER INC. | CT | Waterbury | 05 | New Haven |
| 116 | HENKEL CORP | CT | Newington | 01 | Hartford |
| 117 | HERITAGE ENVIRONMENTAL SERVICES LLC | VT | Williston | | Chittenden |
| 118 | HOLTRACHEM | ME | Orrington | 02 | Penobscot |
| 119 | HONEYWELL SKINNER | CT | New Britain | 05 | Hartford |
| 120 | HOWE FURNITURE CORP. | CT | Norwalk | 04 | Fairfield |
| 121 | IBM CORPORATION ESSEX JUNCTION | VT | Essex | 01 | Chittenden |
| 122 | IDEAL PRODUCTS LLC | CT | Beacon Falls | 03 | New Haven |
| 123 | INTERNATIONAL WOOLEN CO INC | ME | Sanford | 01 | York |
| 124 | IRVING TANNING CO | ME | Hartland | 02 | Somerset |
| 125 | ISELI | CT | Terryville, Plymouth | 05 | Litchfield |
| 126 | ITW WATERBURY BUCKLE | CT | Waterbury | 05 | New Haven |
| 127 | JET-LINE SERVICES (formerly, GEOCHEM; currently, Jones Environmental Services, Inc.) | MA | Lowell | 05 | Middlesex |
| 128 | KAMAN AEROSPACE- BLOOMFIELD | CT | Bloomfield | 01 | Hartford |
| 129 | KAMAN AEROSPACE - MOOSUP | CT | Moosup | 02 | Windham |
| 130 | KANTHAL CORP. | CT | Bethel | 05 | Fairfield |
| 131 | KENDRO LABORATORY PRODUCTS (SORVALL) | CT | Newtown | 05 | Fairfield |
| 132 | KIMBERLY CLARK TISSUE COMPANY | ME | Winslow | 02 | Kennebec |
| 133 | KING MANUFACTURING | NH | Jaffrey | 02 | Cheshire |
| 134 | LEAVENS AWARDS COMPANY | MA | Attleboro | 03 | Bristol |
| 135 | LIC WAREHOUSE REALTY CO INC | CT | Bristol | 01 | Hartford |
| 136 | LIGHT METALS COLORING | CT | Southington | 01 | Hartford |
| 137 | LIGHTOLIER | CT | Norwich | 02 | New London |
| 138 | LIGHTOLIER- FALL RIVER | MA | Fall Rvier | 04 | Bristol |
| 139 | MACDERMID INC. | CT | Waterbury | 05 | New Haven |
| 140 | MAINE COASTAL SERVICES | ME | Portland | 01 | Cumberland |
| 141 | MAINE ELECTRONICS | ME | Lisbon | 02 | Androscoggin |
| 142 | MAINE METAL FINISHING / SILVEX | ME | Gorham | 01 | Cumberland |
| 143 | MAINE YANKEE ATOMIC POWER | ME | Wiscasset | 01 | Lincoln |
| 144 | MATTACO (BOUTIN LORETTA/MATTATUCK MFG.) | CT | Waterbury | 05 | New Haven |
| 145 | MCGRAW EDISON CO BUSSMANN DIV | CT | Bristol | 01 | Hartford |
| 146 | MEDALLIC ART | CT | Danbury | 05 | Fairfield |
| 147 | METAL FINISHING TECHNOLOGIES | CT | Forestville, Bristol | 01 | Hartford |
| 148 | METALS RECYCLING, LLC | RI | Johnston | 02 | Providence |
| 149 | MICRO METRICS INC | ME | Rockport | 01 | Knox |
| 150 | MICROTECH, INC. | CT | Cheshire | 05 | New Haven |
| 151 | MIDDLETOWN STATION | CT | Middletown | 03 | Middlesex |
| 152 | MIRROR POLISHING & PLATING COMP | CT | Waterbury | 03 | New Haven |
| 153 | MOHEGAN TRIBE OF INDIANS (NAVAL PRODUCTS) | CT | Uncasville | 02 | New London |
| 154 | MONTVILLE STATION | CT | Montville | 02 | New London |
| 155 | MORTON INTERNATIONAL INC EPR | RI | East Providence | 01 | Providence |
| 156 | MURPHY'S WASTE OIL | MA | Woburn | 07 | Middlesex |
| 157 | M.H. RHODES | CT | Old Saybrook | 02 | Middlesex |
| 158 | NATIONAL CHROMIUM | CT | Putnam | 02 | Windham |
| 159 | NATIONAL SEMICONDUCTOR CORPORATION | ME | South Portland | 01 | Cumberland |
| 160 | NET OPTICS CORP. | MA | Sturbridge | 02 | Worcester |
| 161 | NEW ENGLAND ORDINANCE | NH | Newport | 02 | Sullivan |
| 162 | NEW ENGLAND POWER BRAYTON PT | MA | Somerset | 03 | Bristol |
| 163 | NEW ENGLAND POWER CO | MA | Salem | 06 | Essex |
| 164 | NEW HAVEN HARBOR STATION | CT | New Haven | 03 | New Haven |
| 165 | NEWPAGE PAPER CORP | ME | Rumford | 02 | Oxford |
| 166 | NORTH & JUDD INC | CT | Middletown | 03 | Middlesex |
| 167 | NORTH & JUDD, INC. | CT | Middletown | 03 | Middlesex |
| 168 | NORTHEAST ELECTRONICS CORP | CT | Milford | 03 | New Haven |
| 169 | NORTHLAND ENVIRONMENTAL INC | RI | Providence | 01 02 | Providence |
| 170 | NORWALK HARBOR STATION | CT | Norwalk | 04 | Fairfield |
| 171 | NOVA CHEMICAL INC. | MA | Springfield | 02 | Hampden |
| 172 | NSI UTC (NORDEN SYSTEMS) | CT | Norwalk | 04 | Fairfield |
| 173 | OCEAN STATE STEEL | RI | East Providence | 01 | Providence |
| 174 | OLIN CORP | CT | Middletown | 03 | Middlesex |
| 175 | OSRAM SYLVANIA INC | ME | Waldoboro | 01 | Lincoln |
| 176 | OUTERLIMITS OFFSHORE POWERBOAT | RI | Bristol | 01 | Bristol |
| 177 | O&G INDUSTRIES | CT | Bridgeport | 04 | Fairfield |
| 178 | PHARMACIA & UPJOHN | CT | North Haven | 03 | New Haven |
| 179 | PHARMACIA & UPJOHN (DOW LABORATORY) | CT | North Haven | 03 | New Haven |
| 180 | PHILIPS COMPONENTS - SMITHFIELD | RI | Smithfield | 01 | Providence |
| 181 | PIONEER PLASTICS | ME | Auburn | 02 | Androscoggin |
| 182 | PLAINVILLE LANDFILL | CT | Plainville | 05 | Hartford |
| 183 | PLAINVILLE PLATING | CT | Plainville | 05 | Hartford |
| 184 | POWER SEMICONDUCTOR (M&R REALTY) | CT | Milford | 03 | New Haven |
| 185 | PRATT & WHITNEY | ME | North Berwick | 01 | York |
| 186 | PRATT & WHITNEY - COLT STREET | CT | East Hartford | 01 | Hartford |
| 187 | PRATT & WHITNEY - FORMER OVERHAUL & REPAIR OPERATIONS | CT | Southington | 01 | Hartford |
| 188 | PRATT & WHITNEY - MAIN STREET | CT | East Hartford | 01 | Hartford |
| 189 | PRATT & WHITNEY - PENT ROAD | CT | East Hartford | 01 | Hartford |
| 190 | PRATT & WHITNEY - ROCKY HILL | CT | Rocky Hill | 01 | Hartford |
| 191 | PRATT & WHITNEY AIRCRAFT - NORTH HAVEN | CT | North Haven | 03 | New Haven |
| 192 | PRYM | CT | Dayville | 02 | Windham |
| 193 | PUTNAM TOWN LANDFILL | CT | Putnam | 02 | Windham |
| 194 | QUINLAN RUSSELL | CT | Meriden | 05 | New Haven |
| 195 | RELIABLE ELECTROPLATING | MA | Chartley | 04 | Bristol |
| 196 | RISDON CORP. | CT | Danbury | 05 | Fairfield |
| 197 | ROBERT SHAW CONTROLS CO | CT | Milford | 03 | New Haven |
| 198 | ROGERS CORP. - ROGERS | CT | Rogers | 02 | Windham |
| 199 | ROGERS CORP. - S. WINDHAM | CT | Windham | 02 | Windham |
| 200 | SACO DEFENSE INC | ME | Saco | 01 | York |
| 201 | SAFETY-KLEEN-MARLBOROUGH | MA | Marlborough | 01 | Middlesex |
| 202 | SAFETY-KLEEN SALISBURY | MA | Salisbury |  | [Unknown County] |
| 203 | SAFETY KLEEN-BRIDGEWATER | MA | [Unknown City] | | [Unknown County] |
| 204 | SAFETY KLEEN - BARRE | VT | Barre | 01 | Washington |
| 205 | SAFETY KLEEN - WEST BROOKFIELD | MA | West Brookfield | 01 | Worcester |
| 206 | SAFETY KLEEN CORP. - BRANFORD | CT | Branford | 03 | New Haven |
| 207 | SAFETY KLEEN CORP. - PLAINFIELD | CT | Plainfield | 02 | Windham |
| 208 | SAFETY KLEEN CORP. - W. HARTFORD | CT | West Hartford | 01 | Hartford |
| 209 | SAFETY KLEEN SYSTEMS INC | RI | Cranston | 02 | Providence |
| 210 | SANITARY DASH | CT | North Grosvenordale | 02 | Windham |
| 211 | SCHICK WILKINSON SWORD | CT | Milford | 03 | New Haven |
| 212 | SEASIDE PARK LANDFILL | CT | Bridgeport | 04 | Fairfield |
| 213 | SEEKONK MANUFACTURING | MA | Seekonk | 03 | Bristol |
| 214 | SIBLEY COMPANY | CT | Haddam | 02 | Middlesex |
| 215 | SIKORSKY AIRCRAFT - BRIDGEPORT | CT | Bridgeport | 04 | Fairfield |
| 216 | SIKORSKY AIRCRAFT - STRATFORD | CT | Stratford | 03 | Fairfield |
| 217 | SOLUTIA, INC. | MA | Springfield | 02 | Hampden |
| 218 | SOMERS INDUSTRIAL | CT | Somers | 02 | Tolland |
| 219 | SOUTHDOWN | CT | Bristol | 01 | Hartford |
| 220 | SOUTHINGTON MANUFACTURING (CHEROKEE) | CT | Southington | 01 | Hartford |
| 221 | SOUTHINGTON TOWN LANDFILL | CT | Southington | 01 | Hartford |
| 222 | SOUTHWIRE COMPANY | CT | Jewett City | 02 | New London |
| 223 | SPECIFICATIONS PLATING | CT | Bridgeport | 04 | Fairfield |
| 224 | SPIROL INTERNATIONAL | CT | Danielson | 02 | Windham |
| 225 | SPORTING GOODS PROPERTIES, INC. | CT | Bridgeport | 04 | Fairfield |
| 226 | STRATFORD ARMY ENGINE PLANT | CT | STRATFORD | 03 | Fairfield |
| 227 | SUMMIT CORP. | CT | Thomaston | 05 | Litchfield |
| 228 | SUSAN BATES | CT | Chester | 02 | New Haven |
| 229 | SWIFT & SONS, INC. | CT | Hartford | 01 | Hartford |
| 230 | SYNTHETIC PRODUCTS | CT | Stratford | 03 | Fairfield |
| 231 | S.D. WARREN | ME | Westbrook | 01 | Cumberland |
| 232 | TECH SYSTEMS CORP. | CT | Thomaston | 05 | Litchfield |
| 233 | TEKNICIRCUITS, INC. | CT | Danbury | 05 | Fairfield |
| 234 | THBC INC | RI | Warwick | 02 | Kent |
| 235 | THOMPSON TOWN LANDFILL | CT | North Grosvenordale | 02 | Windham |
| 236 | TIMEX CORP. | CT | Middlebury | 05 | New Haven |
| 237 | TORRINGTON LANDFILL | CT | Torrington | 01 | Litchfield |
| 238 | UNIROYAL CHEMICAL | CT | Naugatuck | 03 | New Haven |
| 239 | US DEPT. OF ENERGY - KNOLLS ATOMIC POWER LABORATORY | CT | Windsor | 01 | Hartford |
| 240 | USM MACHINERY DIV | MA | Beverly | 06 | Essex |
| 241 | UTC - PRATT & WHITNEY | CT | Middletown | 03 | Middlesex |
| 242 | UTILITY MANUFACTURING | MA | Wilbraham | 02 | Hampden |
| 243 | VANDERBILT CHEMICAL | CT | Bethel | 05 | Fairfield |
| 244 | VIRGINIA INDUSTRIES INC. (HOLGRATH MEDICAL TECHNOLOGIES) | CT | Cheshire | 05 | New Haven |
| 245 | VISHAY SPRAGUE INC | ME | Sanford | 01 | York |
| 246 | VITRAMON INC. | CT | Monroe | 04 | Fairfield |
| 247 | WALTON & LONSBURY | MA | Attleboro | 03 | Bristol |
| 248 | WAMPUS MILFORD ASSOC./ EATON AND SLOAN | CT | Milford | 03 | New Haven |
| 249 | WARING PRODUCTS | CT | New Hartford | 05 | Litchfield |
| 250 | WATERBURY COMPANIES | CT | Waterbury | 05 | New Haven |
| 251 | WATERBURY ROLLING MILLS | CT | Waterbury | 05 | New Haven |
| 252 | WATERTOWN TOWN LANDFILL | CT | Watertown | 05 | Litchfield |
| 253 | WHITING & DAVIS CO. | MA | Plainville | 03 | Norfolk |
| 254 | WHYCO CHROMIUM | CT | Thomaston | 05 | Litchfield |
| 255 | WINDSOR BLOOMFIELD LANDFILL | CT | Windsor | 01 | Hartford |
| 256 | WINDSOR MANUFACTURING | CT | Windsor | 01 | Hartford |
| 257 | WYMAN GORDON CO. | MA | N. Grafton | 02 | Worcester |
| 258 | ZECCO INC | MA | Northboro | 03 | Worcester |
| 259 | ZENECA SPECIALTIES | MA | Dighton | 04 | Bristol |