| Site Name | State | City | C.D. | County |
| 1 | 20TH SKEET & SPORTSMEN CLUB | NH | HOOKSETT | 01 | HILLSBOROUGH |
| 2 | A H NILSON MACHINE COMPANY | CT | SHELTON | 05 | FAIRFIELD |
| 3 | ABLILITY MACHINE & TOOL COMPANY | CT | MANCHESTER | 01 | HARTFORD |
| 4 | ACCURATE BRAZING COMPANY | CT | NEWINGTON | 01 | HARTFORD |
| 5 | ACITRONICS, INC. | CT | BRANFORD | 03 | NEW HAVEN |
| 6 | ACTON LANDFILL | MA | ACTON | 05 | MIDDLESEX |
| 7 | ACUSHNET LANDFILL | MA | ACUSHNET | 10 | BRISTOL |
| 8 | ADAMS LANDFILL | MA | ADAMS | 01 | BERKSHIRE |
| 9 | ADCO MANUFACTURING | CT | SOUTH WINDSOR | 01 | HARTFORD |
| 10 | AGWAY/KRESS PROPERTY | MA | ACTON | 05 | MIDDLESEX |
| 11 | AIRCO INDUSTRIAL | MA | ACTON | 05 | MIDDLESEX |
| 12 | AIRPAX CORPORATION - PLANT 1 | CT | CHESHIRE | 05 | NEW HAVEN |
| 13 | AIRPORT SEPTIC SYSTEM | MA | BEVERLY | 06 | ESSEX |
| 14 | AKIM ENGINEERING COMPANY, INC. | CT | WINDHAM | 02 | WINDHAM |
| 15 | ALCON PLASTICS | CT | ENFIELD | 06 | HARTFORD |
| 16 | ALLIED METAL PRODUCTS, INC. | CT | BERLIN | 01 | HARTFORD |
| 17 | ALLING LANDER COMPANY | CT | CHESHIRE | 05 | NEW HAVEN |
| 18 | ALTO-TRONICS CORPORATION (FORMER) | MA | BURLINGTON | 07 | MIDDLESEX |
| 19 | AMERICAN TOOL AND MANUFACTURING | CT | PLAINVILLE | 06 | HARTFORD |
| 20 | AMSTAR | CT | SPRAGUE | 02 | NEW LONDON |
| 21 | AMTRAK GENERAL MAINTENANCE FACILITY | CT | NEW HAVEN | 03 | NEW HAVEN |
| 22 | ANACONDA INDUSTRIES | CT | ANSONIA | 05 | NEW HAVEN |
| 23 | ANAMET, INC. | CT | WATERBURY | 02 | NEW HAVEN |
| 24 | ANDOVER TOWN LANDFILL | MA | ANDOVER | 05 | ESSEX |
| 25 | ANDREWS ROAD MUNICIPAL LANDFILL | ME | BIDDEFORD | 01 | YORK |
| 26 | ANGELILLO PROPERTY | CT | SOUTHINGTON | 06 | HARTFORD |
| 27 | ANSONIA LANDFILL | CT | ANSONIA | 03 | NEW HAVEN |
| 28 | APEX MACHINE AND TOOL COMPANY | CT | FARMINGTON | 06 | HARTFORD |
| 29 | ARKWRIGHT DUMP | RI | COVENTRY | 02 | KENT |
| 30 | ASHLAND CHEMICAL / KYOVA CORPORATION | CT | BETHEL | 05 | FAIRFIELD |
| 31 | ASTRO CIRCUITS CORP (FORMER) | MA | LOWELL | 05 | MIDDLESEX |
| 32 | ATLANTIC COREY CRANE | MA | DRACUT | 05 | MIDDLESEX |
| 33 | ATLANTIC TUBING CO. | RI | CRANSTON | 02 | PROVIDENCE |
| 34 | ATLAS MISSLE S-3 | VT | SWANTON | 01 | FRANKLIN |
| 35 | ATTLEBORO DYEING & FINISHING (FORMER) | MA | SEEKONK | 10 | BRISTOL |
| 36 | ATTLEBORO GAS WORKS (FORMER) | MA | ATTLEBORO | 04 | BRISTOL |
| 37 | A. C. LAWRENCE LEATHER | NH | WINCHESTER | 02 | Cheshire |
| 38 | A.B.A. TOOL & DIE | CT | MANCHESTER | 01 | HARTFORD |
| 39 | A.N. PIERSON, INC. | CT | CROMWELL | 01 | MIDDLESEX |
| 40 | BACCAIRE, HAROLD PROPERTY | RI | SMITHFIELD | 01 | PROVIDENCE |
| 41 | BALL AND ROLLER BEARING COMPANY | CT | DANBURY | 05 | FAIRFIELD |
| 42 | BANGOR-AROOSTOCK RAILROAD COMPANY | ME | HERMON | 02 | PENOBSCOT |
| 43 | BARNSTABLE LANDFILL | MA | BARNSTABLE | 12 | BARNSTABLE |
| 44 | BARRE WOOL (FORMER) | MA | BARRE | 02 | WORCESTER |
| 45 | BARRINGTON LANDFILL #1 | RI | BARRINGTON | 01 | BRISTOL |
| 46 | BARRINGTON LANDFILL #2 | RI | BARRINGTON | 01 | BRISTOL |
| 47 | BARRINGTON LANDFILL #3 | RI | BARRINGTON | 01 | BRISTOL |
| 48 | BARRINGTON LANDFILL #4 | RI | BARRINGTON | 01 | BRISTOL |
| 49 | BATES CORRUGATED BOX CORP. (FORMER) | MA | TOWNSEND | 05 | MIDDLESEX |
| 50 | BAUER AEROSPACE, INC. (FORMER) | CT | FARMINGTON | 06 | HARTFORD |
| 51 | BAY STATE ABRASIVES DRESSER IND LANDFILL | MA | WESTBOROUGH | 03 | WORCESTER |
| 52 | BEAUVAIS PRINTING COMPANY | CT | GUILFORD | 03 | NEW HAVEN |
| 53 | BEAVER RIVER DUMP | RI | RICHMOND | 02 | WASHINGTON |
| 54 | BECTON DICKINSON COMPANY | CT | NORTH CANAAN | 06 | LITCHFIELD |
| 55 | BEDUS & STANKER ELECTROPLATING | CT | BRISTOL | 06 | HARTFORD |
| 56 | BELCHERTOWN BULK CARRIERS | MA | BELCHERTOWN | 01 | HAMPSHIRE |
| 57 | BENZENOID ORGANICS INC | MA | BELLINGHAM | 03 | NORFOLK |
| 58 | BERKSHIRE GAS COMPANY | MA | GREENFIELD | 01 | FRANKLIN |
| 59 | BERKSHIRE LITHOGRAPHERS | CT | BETHEL | 05 | FAIRFIELD |
| 60 | BERKSHIRE TANNING CO (FORMER) | MA | NORTH ADAMS | 01 | BERKSHIRE |
| 61 | BETHEL LANDFILL | VT | ROYALTON | 01 | WINDSOR |
| 62 | BETHEL LATEX | CT | BETHEL | 05 | FAIRFIELD |
| 63 | BIBLE SPEAKS | RI | JOHNSTON | 02 | PROVIDENCE |
| 64 | BIRD AND SONS (FORMER) | MA | WALPOLE | 04 | NORFOLK |
| 65 | BIRD PROPERTY (PRENTICE STREET PROPERTY) | MA | HOLLISTON | 03 | MIDDLESEX |
| 66 | BIX FURNITURE STRIPPING OF MILFORD | CT | NEW MILFORD | 06 | LITCHFIELD |
| 67 | BLH ELECTRONICS (FORMER) | MA | WALTHAM | 08 | MIDDLESEX |
| 68 | BLOX CHEMICAL | MA | WOBURN | 07 | MIDDLESEX |
| 69 | BLUE BEACH DISPOSAL AREA | RI | NORTH KINGSTOWN | 02 | WASHINGTON |
| 70 | BOISE CASCADE/NORTH LANDFILL/LAGOON | VT | SHELDON | 01 | FRANKLIN |
| 71 | BOISE CASCADE/SOUTH LANDFILL | VT | SHELDON | 01 | FRANKLIN |
| 72 | BONAFIDE DUMP SITE | ME | LISBON | 02 | AROOSTOOK |
| 73 | BORDEN CHEMICAL CO | MA | LEOMINSTER | 04 | WORCESTER |
| 74 | BOSTON GAS CO LNG PLT | MA | SALEM | 06 | ESSEX |
| 75 | BRANFORD LANDFILL | CT | BRANFORD | 03 | NEW HAVEN |
| 76 | BRAZONICS | MA | AMESBURY | 06 | ESSEX |
| 77 | BREAULT ROAD DISPOSAL AREA | CT | BEACON FALLS | 05 | NEW HAVEN |
| 78 | BRENNAN PROPERTY | MA | OXFORD | 02 | WORCESTER |
| 79 | BRICKYARD POND DISPOSAL AREA | RI | BARRINGTON | 01 | BRISTOL |
| 80 | BRIDGEPORT BRASS | CT | NORWALK | 04 | FAIRFIELD |
| 81 | BRISTOL COMPANY | CT | WATERBURY | 03 | NEW HAVEN |
| 82 | BRISTOL LANDFILL | RI | BRISTOL | 01 | BRISTOL |
| 83 | BRISTOL SOCKET SCREW | CT | BEACON FALLS | 05 | NEW HAVEN |
| 84 | BROOKFIELD DOT GARAGE | CT | BROOKFIELD | 05 | FAIRFIELD |
| 85 | BROWN MANUFACTURING COMPANY, INC. | CT | PLAINVILLE | 06 | HARTFORD |
| 86 | BROWNS SEPTAGE | NH | PETERBOROUGH | 02 | HILLSBOROUGH |
| 87 | BUELLS GREENHOUSES, INC. | CT | EASTFORD | 02 | WINDHAM |
| 88 | BURGESS ROAD LANDFILL | CT | SOUTH WINDSOR | 01 | HARTFORD |
| 89 | BURLINGTON MUNI DISP GRDS | VT | BURLINGTON | 01 | CHITTENDEN |
| 90 | BURNS HILL ROAD AREA | NH | HUDSON | 02 | HILLSBOROUGH |
| 91 | BURRILLVILLE LANDFILL #1 | RI | BURRILLVILLE | 02 | PROVIDENCE |
| 92 | BURRILLVILLE LANDFILL #2 | RI | BURRILLVILLE | 02 | PROVIDENCE |
| 93 | BURT COMPANY | ME | PORTLAND | 01 | CUMBERLAND |
| 94 | BUTTONWOOD INDUSTRIAL COMPLEX | RI | BRISTOL | 01 | BRISTOL |
| 95 | CALCUTT LANDFILL | NH | DOVER | 01 | STRAFFORD |
| 96 | CAMGER CHEMICALS | MA | NORFOLK | 04 | NORFOLK |
| 97 | CAMP AVENUE DUMP | RI | NORTH KINGSTOWN | 02 | WASHINGTON |
| 98 | CANNON'S ENGINEERING | MA | YARMOUTH | 10 | BARNSTABLE |
| 99 | CARBIDE MOLD | CT | CHESHIRE | 05 | NEW HAVEN |
| 100 | CARBOLABS, INC. | CT | BETHANY | 03 | NEW HAVEN |
| 101 | CARLYLE JOHNSON MACHINE COMPANY | CT | MANCHESTER | 01 | HARTFORD |
| 102 | CAROL CABLE CO. | RI | LINCOLN | 01 | PROVIDENCE |
| 103 | CARPENTER TECHNOLOGY CORPORATION | CT | BRIDGEPORT | 04 | FAIRFIELD |
| 104 | CASCO CHEMICAL | MA | BEVERLY | 06 | ESSEX |
| 105 | CATAMOUNT DYERS | VT | BENNINGTON | 01 | Bennington |
| 106 | CECE-MACERA LANDFILL | RI | JOHNSTON | 02 | PROVIDENCE |
| 107 | CEDAR GROVE REDEVELOPMENT | CT | NEW LONDON | 02 | NEW LONDON |
| 108 | CENTRAL FALLS DUMP | RI | LINCOLN | 01 | PROVIDENCE |
| 109 | CENTRAL VERMONT RAILWAY INC | VT | ST ALBANS | 01 | FRANKLIN |
| 110 | Charlton Woolen Co. | MA | Charlton | 02 | Worcester |
| 111 | CHAMPLAIN CABLE CORPORATION | VT | COLCHESTER | 01 | CHITTENDEN |
| 112 | CHARLESTOWN SANITARY LANDFILL | RI | CHARLESTOWN | 02 | WASHINGTON |
| 113 | CHARLTON PRESS PUBLICATIONS | CT | DERBY | 05 | NEW HAVEN |
| 114 | CHASE BRASS AND COPPER | CT | WATERBURY | 05 | NEW HAVEN |
| 115 | CHATHAM SANI LANDFILL | MA | CHATHAM | 12 | BARNSTABLE |
| 116 | CHESHIRE MUNICIPAL LANDFILL | CT | CHESHIRE | 05 | NEW HAVEN |
| 117 | CHESTEL, INC. | CT | CHESTER | 02 | MIDDLESEX |
| 118 | CHESTER MUNICIPAL LANDFILL | CT | CHESTER | 02 | MIDDLESEX |
| 119 | CLARK DEWATERING LIMITED | CT | BOLTON | 02 | TOLLAND |
| 120 | CLINTON MUNICIPAL LANDFILL | CT | CLINTON | 03 | MIDDLESEX |
| 121 | CLINTON RIGBY BROOK | MA | CLINTON | 03 | WORCESTER |
| 122 | CM BRACKETT & CO (FORMER) | MA | PLYMPTON | 10 | PLYMOUTH |
| 123 | Coal Tar Processing Facility (Former) | MA | Everett | 07 | Middlesex |
| 124 | COASTAL TANK LINES | CT | WALLINGFORD | 03 | NEW HAVEN |
| 125 | COHEN PROPERTY | MA | TAUNTON | 09 | BRISTOL |
| 126 | COLONIAL LACQUER & CHEMICAL CO | MA | ASHLAND | 03 | MIDDLESEX |
| 127 | COLORADO FUEL AND IRON (FORMER) | MA | PALMER | 02 | HAMPDEN |
| 128 | COLUMBIA MAGNETICS | CT | DANBURY | 05 | FAIRFIELD |
| 129 | COMERFORD MANUFACTURING COMPANY | CT | BRISTOL | 06 | HARTFORD |
| 130 | COMMONWEALTH GAS CO | MA | FRAMINGHAM | 04 | MIDDLESEX |
| 131 | COMPO INDUSTRIES INC | MA | MANSFIELD | 04 | BRISTOL |
| 132 | CONN ENGINEERING ASSOC CORP | CT | NEWTOWN | 05 | FAIRFIELD |
| 133 | CONNECTICUT CYCLE ACCESSORIES, INC. | CT | WINDHAM | 02 | WINDHAM |
| 134 | CONNECTICUT SPRING & STAMPING COMPANY | CT | FARMINGTON | 06 | HARTFORD |
| 135 | CONTOOCOOK VALLEY PAPER COMPANY | NH | HENNIKER | 02 | MERRIMACK |
| 136 | COOK'S LANDFILL | RI | EAST PROVIDENCE | 01 | PROVIDENCE |
| 137 | CORNING ROAD MUNICIPAL LANDFILL | CT | NORWICH | 02 | NEW LONDON |
| 138 | CORNWALL DOT GARAGE | CT | CORNWALL | 06 | LITCHFIELD |
| 139 | CORY'S LANE DISPOSAL AREA | RI | TIVERTON | 01 | NEWPORT |
| 140 | COSTA'S LANDFILL (FORMER) | MA | LOWELL | 05 | MIDDLESEX |
| 141 | COUNTY WIDE CONSTRUCTION | CT | CHESHIRE | 05 | NEW HAVEN |
| 142 | COVENTRY MUNICIPAL LANDFILL | RI | COVENTRY | 02 | KENT |
| 143 | CRANSTON SANITARY LANDFILL | RI | CRANSTON | 02 | PROVIDENCE |
| 144 | CREESE & COOK CO (FORMER) | MA | DANVERS | 06 | ESSEX |
| 145 | CROCKER JUNKYARD (FORMER) | MA | SANDWICH | 10 | BARNSTABLE |
| 146 | CROSSLEY MACHINE & TOOL CO./JACO DEVICES | RI | LINCOLN | 01 | PROVIDENCE |
| 147 | CRYSTAL CLEANSERS | RI | COVENTRY | 02 | KENT |
| 148 | CT AIR NATIONAL GUARD BRADLEY BASE | CT | EAST GRANBY | 06 | Hartford |
| 149 | CT DOT ROCKY HILL BROOKS STREET FACILITY | CT | ROCKY HILL | 01 | HARTFORD |
| 150 | CT DOT ROCKY HILL WEST STREET FACILITY | CT | ROCKY HILL | 01 | HARTFORD |
| 151 | CT DOT SEARLES ROAD DISPOSAL FACILITY #33 | CT | BROOKLYN | 02 | WINDHAM |
| 152 | CULBRO INDIAN HEAD FARM | CT | EAST GRANBY | 06 | HARTFORD |
| 153 | CUMBERLAND FARMS | MA | CANTON | 11 | NORFOLK |
| 154 | CUMBERLAND MUNICIPAL LANDFILL | RI | CUMBERLAND | 01 | PROVIDENCE |
| 155 | CUSTOM PRODUCT CORPORATION | CT | NORTH HAVEN | 03 | NEW HAVEN |
| 156 | DANIELSON DOT GARAGE | CT | KILLINGLY | 02 | WINDHAM |
| 157 | DARIEN LANDFILL | CT | DARIEN | 04 | FAIRFIELD |
| 158 | DAVISVILLE NIKE LAUNCHER AREA | RI | NORTH KINGSTOWN | 02 | WASHINGTON |
| 159 | DAYON MANUFACTURING, INC. | CT | FARMINGTON | 06 | HARTFORD |
| 160 | DECOR NOVELTIES INC | MA | WHITMAN | 10 | PLYMOUTH |
| 161 | DEEP RIVER DUMP | CT | DEEP RIVER | 02 | MIDDLESEX |
| 162 | DEEP RIVER MANUFACTURING COMPANY | CT | WESTBROOK | 02 | MIDDLESEX |
| 163 | DELL MANUFACTURING COMPANY | CT | FARMINGTON | 06 | HARTFORD |
| 164 | DELTA IND/THIOKOL CORP | CT | EAST GRANBY | 06 | HARTFORD |
| 165 | DENOMINATOR COMPANY, INC. | CT | WOODBURY | 06 | LITCHFIELD |
| 166 | DERBY LANDFILL | CT | DERBY | 05 | NEW HAVEN |
| 167 | DERBY LINE DUMP | VT | DERBY | 01 | ORLEANS |
| 168 | DIP & STRIP | CT | NORWALK | 04 | FAIRFIELD |
| 169 | DONAHUE PROPERTY | CT | NORWALK | 04 | FAIRFIELD |
| 170 | DOVER GAS PLANT | NH | DOVER | 01 | STRAFFORD |
| 171 | DPW/Chestnut Street Drainage System | MA | Brookline | 04 | Norfolk |
| 172 | DSD CO-MAGNATECH DIVISION | CT | EAST GRANBY | 06 | HARTFORD |
| 173 | DUFFY BROS CONSTRUCTION INC | MA | WALTHAM | 08 | MIDDLESEX |
| 174 | DUPRAW DUMP | RI | LINCOLN | 01 | PROVIDENCE |
| 175 | DURALITE COMPANY, INC | MA | GRAFTON | 02 | WORCESTER |
| 176 | DUSTON ROAD AREA | NH | SALEM | 02 | ROCKINGHAM |
| 177 | DUTCH ISLAND | RI | JAMESTOWN | 01 | NEWPORT |
| 178 | E B EXTERMINATING COMPANY | CT | EAST HADDAM | 02 | MIDDLESEX |
| 179 | EAST BRIDGEWATER LANDFILL | MA | EAST BRIDGEWATER | 11 | PLYMOUTH |
| 180 | EAST GRANBY LANDFILL | CT | EAST GRANBY | 06 | HARTFORD |
| 181 | EAST GREENWICH LANDFILL | RI | EAST GREENWICH | 02 | KENT |
| 182 | EAST HADDAM MUNICIPAL LANDFILL | CT | EAST HADDAM | 02 | MIDDLESEX |
| 183 | EAST HAMPTON MUNICIPAL LANDFILL | CT | EAST HAMPTON | 02 | MIDDLESEX |
| 184 | EAST HARTFORD MUNICIPAL LANDFILL | CT | EAST HARTFORD | 01 | HARTFORD |
| 185 | EASTHAM SANITARY LANDFILL | MA | EASTHAM | 12 | BARNSTABLE |
| 186 | EASTHAMPTON LANDFILL | MA | EASTHAMPTON | 01 | HAMPSHIRE |
| 187 | EASTHAMPTON LANDFILL | MA | EASTHAMPTON | 01 | HAMPSHIRE |
| 188 | EASTMAN GELATINE CORP LIME DISP AREA | MA | PEABODY | 06 | ESSEX |
| 189 | ECHLIN MANUFACTURING COMPANY | CT | BRANFORD | 03 | NEW HAVEN |
| 190 | EDMUNDS MANUFACTURING COMPANY | CT | FARMINGTON | 06 | HARTFORD |
| 191 | EFROS BARREL CO. | RI | COVENTRY | 02 | KENT |
| 192 | ELECTROLUX | CT | SEYMOUR | 05 | NEW HAVEN |
| 193 | ELECTROMETALS INC (FORMER) | MA | CHELMSFORD | 05 | MIDDLESEX |
| 194 | ELECTRONIC COIL CORPORATION | CT | FARMINGTON | 06 | HARTFORD |
| 195 | ELM TREE DUMP | RI | LINCOLN | 01 | PROVIDENCE |
| 196 | ESCO LABORATORIES, INC. | CT | PLAINVILLE | 06 | HARTFORD |
| 197 | ESSEX LANDFILL | VT | ESSEX | 01 | CHITTENDEN |
| 198 | ESSEX MUNICIPAL LANDFILL | CT | ESSEX | 02 | MIDDLESEX |
| 199 | EXETER GAS PLANT | NH | EXETER | 01 | ROCKINGHAM |
| 200 | EXETER LANDFILL #1 | RI | EXETER | 02 | WASHINGTON |
| 201 | EXETER SANITARY LANDFILL #2 | RI | EXETER | 02 | WASHINGTON |
| 202 | EXETER TOWN DUMP | RI | EXETER | 02 | WASHINGTON |
| 203 | EXXON ENTERPRISES, INC. | CT | BROOKFIELD | 05 | FAIRFIELD |
| 204 | FABRICARE HOUSE | MA | NORWELL | 10 | PLYMOUTH |
| 205 | FAFARD CONSTRUCTION | MA | SALEM | 06 | ESSEX |
| 206 | FAIRBANKS MORSE FOUNDRY | VT | ST. JOHNSBURY | 01 | CALEDONIA |
| 207 | FAIRFIELD MUNICIPAL LANDFILL | CT | FAIRFIELD | 04 | FAIRFIELD |
| 208 | FARMINGTON LANDFILL | CT | FARMINGTON | 06 | HARTFORD |
| 209 | FARMINGTON LANDFILL II | CT | FARMINGTON | 06 | HARTFORD |
| 210 | FARWELL STREET DUMP | VT | BARRE | 01 | WASHINGTON |
| 211 | FIBERGLASS FABRICATORS, INC. | CT | PUTNAM | 02 | WINDHAM |
| 212 | FIELDS POINT CITY DUMP | RI | PROVIDENCE | 02 | PROVIDENCE |
| 213 | FIMBEL LANDFILL | NH | NASHUA | 02 | HILLSBOROUGH |
| 214 | FINBERG FIELD | MA | ATTLEBORO | 03 | BRISTOL |
| 215 | FIREFIGHTING AREA #2 | RI | NORTH KINGSTOWN | 02 | WASHINGTON |
| 216 | FLETCHER-TERRY COMPANY | CT | FARMINGTON | 06 | HARTFORD |
| 217 | FMC/TULCO INC | MA | AYER | 05 | MIDDLESEX |
| 218 | FORBES LITHOGRAPHIC CO (FORMER) | MA | CHELSEA | 07 | SUFFOLK |
| 219 | FORBES STREET LANDFILL | RI | EAST PROVIDENCE | 01 | PROVIDENCE |
| 220 | FORE RIVER TRANSPORTATION PARK | ME | PORTLAND | 01 | CUMBERLAND |
| 221 | FOSTER NIKE CONTROL AREA | RI | FOSTER | 02 | PROVIDENCE |
| 222 | FOSTER NIKE LAUNCHER AREA | RI | FOSTER | 02 | PROVIDENCE |
| 223 | FOSTER TOWN LANDFILL | RI | FOSTER | 02 | PROVIDENCE |
| 224 | FRANKLIN STREET AREA | VT | MONTPELIER | 01 | WASHINGTON |
| 225 | FREETOWN SCREW MFG CO INC | MA | FREETOWN | 04 | BRISTOL |
| 226 | FREQUENCY SOURCES INC | MA | CHELMSFORD | 05 | MIDDLESEX |
| 227 | FRISMAR, INC. (FORMER) | CT | HADDAM | 02 | MIDDLESEX |
| 228 | GARABEDIAN LANDFILL | NH | PELHAM | 02 | HILLSBOROUGH |
| 229 | GARLAND INDUSTRIES | RI | COVENTRY | 02 | KENT |
| 230 | GAWET MARBLE & GRANITE INC | VT | WEST RUTLAND | 01 | RUTLAND |
| 231 | GILL L. M. WELDING | CT | MANCHESTER | 01 | HARTFORD |
| 232 | GLAS-KRAFT | RI | NORTH SMITHFIELD | 01 | PROVIDENCE |
| 233 | GLASS CONTAINER CORPORATION | CT | KILLINGLY | 02 | WINDHAM |
| 234 | GLOCESTER TOWN LANDFILL | RI | GLOCESTER | 02 | PROVIDENCE |
| 235 | GORHAM/TEXTRON DISPOSAL AREA | RI | PROVIDENCE | 02 | PROVIDENCE |
| 236 | GREAT LAKES CONTAINER CORP. | RI | COVENTRY | 02 | KENT |
| 237 | GREENWOOD AVENUE DISPOSAL AREA | RI | EAST PROVIDENCE | 01 | PROVIDENCE |
| 238 | GRODEL MANUFACTURING, INC. | CT | WATERBURY | 03 | NEW HAVEN |
| 239 | GROS-ITE INDUSTRIES, INC. | CT | FARMINGTON | 06 | HARTFORD |
| 240 | GROTON SCREW MACHINE | MA | GROTON | 05 | MIDDLESEX |
| 241 | GRUGNALE WASTE DISP SITE | NH | MILFORD | 02 | HILLSBOROUGH |
| 242 | GTE SYLVANIA | MA | SALEM | 06 | ESSEX |
| 243 | H L DIEHL | CT | SOUTH WINDHAM | 02 | WINDHAM |
| 244 | H & H SCREW, FORMER (LOT32) | RI | LINCOLN | 01 | PROVIDENCE |
| 245 | HADDAM MUNICIPAL LANDFILL | CT | HADDAM | 02 | MIDDLESEX |
| 246 | HALE MANUFACTURING COMPANY | CT | PUTNAM | 02 | WINDHAM |
| 247 | HAMDEN LANDFILL II | CT | HAMDEN | 03 | NEW HAVEN |
| 248 | HAMILTON LANDFILL | MA | HAMILTON | 06 | ESSEX |
| 249 | HANCOCK ELLSWORTH TANNERS INC | ME | HANCOCK | 02 | HANCOCK |
| 250 | HARCO PROPERTY | CT | WILTON | 05 | FAIRFIELD |
| 251 | HARDING METALS INC | NH | NORTHWOOD | 01 | ROCKINGHAM |
| 252 | HARRIS ROAD DISPOSAL AREA | ME | CUMBERLAND | 01 | CUMBERLAND |
| 253 | HARTFORD AVENUE GRAVEL PITS | RI | JOHNSTON | 02 | PROVIDENCE |
| 254 | HARTFORD BALL COMPANY | CT | ROCKY HILL | 01 | HARTFORD |
| 255 | HARTFORD SPECIAL MACHINERY | CT | SIMSBURY | 06 | HARTFORD |
| 256 | HARTT PROPERTY | CT | NORTH BRANFORD | 03 | NEW HAVEN |
| 257 | HARVEY HUBBELL, INC. | CT | NEWTOWN | 05 | FAIRFIELD |
| 258 | HAYES, INC. (FORMER) | CT | FARMINGTON | 06 | HARTFORD |
| 259 | HEALY-SMITH ASBESTOS SITE | CT | TORRINGTON | 06 | LITCHFIELD |
| 260 | HEDISON MFG CO. | RI | LINCOLN | 01 | PROVIDENCE |
| 261 | HEMINWAY & BARTLETT MANUFACTURING | CT | WATERTOWN | 06 | LITCHFIELD |
| 262 | HERCULES LANDFILL | MA | MANSFIELD | 04 | BRISTOL |
| 263 | HI-LO/CIPRIANO'S DUMP | RI | JOHNSTON | 02 | PROVIDENCE |
| 264 | HICKS & OTIS PRINTS, INC. | CT | NORWALK | 04 | FAIRFIELD |
| 265 | HIGHLINE PRODUCTS | CT | OLD SAYBROOK | 02 | MIDDLESEX |
| 266 | HIMMEL BROTHERS | CT | HAMDEN | 03 | NEW HAVEN |
| 267 | HIRONS UPHOLSTERY | MA | GARDNER | 02 | WORCESTER |
| 268 | HOLBROOK LANDFILL | MA | HOLBROOK | 11 | NORFOLK |
| 269 | HOLLINGSWORTH & VOSE CO | MA | WALPOLE | 04 | SUFFOLK |
| 270 | HOLLINGSWORTH & VOSE CO | MA | GROTON | 05 | MIDDLESEX |
| 271 | HOLLY HOCK ISLAND | CT | NORWICH | 02 | NEW LONDON |
| 272 | HOMETOWN PROPERTIES | RI | NORTH KINGSTOWN | 02 | WASHINGTON |
| 273 | HOPE TOWN DUMP | RI | SCITUATE | 02 | PROVIDENCE |
| 274 | HOPKINTON LANDFILL | RI | HOPKINTON | 02 | WASHINGTON |
| 275 | HOYT & WORTHEN TANNING CORP | MA | HAVERHILL | 06 | ESSEX |
| 276 | HUBBARD HALL CHEMICAL, INC. | CT | WATERBURY | 03 | NEW HAVEN |
| 277 | HUDSON LIGHT & POWER | MA | HUDSON | 03 | MIDDLESEX |
| 278 | HULL DYE & PRINT WORKS | CT | DERBY | 05 | NEW HAVEN |
| 279 | HURLEY MANUFACTURING COMPANY, THE | CT | NEW HARTFORD | 06 | LITCHFIELD |
| 280 | HY-SIL MANUFACTURING | MA | REVERE | 07 | SUFFOLK |
| 281 | HYBRIPAK INC (FORMER) | MA | AVON | 11 | NORFOLK |
| 282 | ILLUSTRATED PRINTING COMPANY | CT | HADDAM | 02 | MIDDLESEX |
| 283 | IMO INDUSTRIES, INC. | CT | FAIRFIELD | 04 | FAIRFIELD |
| 284 | INDIAN HEAD SKI AREA | MA | PEPPERELL | 05 | MIDDLESEX |
| 285 | INDIAN LINE FARM (FORMER) | MA | CANTON | 09 | NORFOLK |
| 286 | INTERSTATE UNIFORM SERVICES CO | VT | WILLIAMSTOWN | 01 | ORANGE |
| 287 | IVANHOE CORPORATION | CT | BRISTOL | 06 | HARTFORD |
| 288 | J FRAGALE PROPERTY | CT | WINCHESTER | 01 | LITCHFIELD |
| 289 | J & S METALS | CT | BRISTOL | 06 | HARTFORD |
| 290 | JACOBS MANUFACTURING COMPANY, THE | CT | WEST HARTFORD | 01 | HARTFORD |
| 291 | JAMES RIVER INC MILL NO 8 | MA | FITCHBURG | 02 | WORCESTER |
| 292 | JAMESTOWN LANDFILL | RI | JAMESTOWN | 01 | NEWPORT |
| 293 | JARD COMPANY | VT | BENNINGTON | 01 | BENNINGTON |
| 294 | JEFFERSON GARDEN APARTMENTS | CT | NEW LONDON | 02 | NEW LONDON |
| 295 | JG GRANT & SONS INC | MA | BRAINTREE | 11 | NORFOLK |
| 296 | JO Whitten Co. (Former) | MA | Winchester | 07 | Middlesex |
| 297 | JOB PLATING | CT | PLAINVILLE | 06 | HARTFORD |
| 298 | JONES & LAUGHLIN STEEL | CT | WINDHAM | 02 | WINDHAM |
| 299 | J.F. FREDERICK TOOL COMPANY, INC. | CT | FARMINGTON | 06 | HARTFORD |
| 300 | KALADISH WASTE DISPOSAL | CT | NAUGATUCK | 05 | NEW HAVEN |
| 301 | KALART VICTOR CORPORATION | CT | PLAINVILLE | 06 | HARTFORD |
| 302 | KAPINOS PROPERTY | CT | WILLINGTON | 02 | TOLLAND |
| 303 | KEMPTON ROAD SITE | MA | MILLVILLE | 02 | WORCESTER |
| 304 | KENDALL COMPANY | CT | WINDHAM | 02 | WINDHAM |
| 305 | KENT HEIGHTS LANDFILL | RI | EAST PROVIDENCE | 01 | PROVIDENCE |
| 306 | KERRAMERICAN MINE (FORMER) | ME | BLUE HILL | 02 | HANCOCK |
| 307 | KIEFER PARK TANK FARM | RI | NORTH KINGSTOWN | 02 | WASHINGTON |
| 308 | KING INDUSTRIES, INC. | CT | NORWALK | 04 | FAIRFIELD |
| 309 | KLOCK MACHINE COMPNAY | CT | MANCHESTER | 01 | HARTFORD |
| 310 | KRAS TOOL & MACHINE COMPANY | CT | WOLCOTT | 05 | NEW HAVEN |
| 311 | KRODEL FOUNDRY | CT | WATERBURY | 03 | NEW HAVEN |
| 312 | KYTRON CIRCUITS CORP | MA | WAKEFIELD | 07 | MIDDLESEX |
| 313 | LANCASHIRE STREET DISPOSAL AREA | RI | PROVIDENCE | 01 | PROVIDENCE |
| 314 | LEDGE THE | MA | DARTMOUTH | 10 | BRISTOL |
| 315 | LEOMINSTER MUNI LANDFILL | MA | LEOMINSTER | 04 | WORCESTER |
| 316 | LEWIS CORPORATION | CT | OXFORD | 05 | NEW HAVEN |
| 317 | LEWIS CORPORATION | CT | WOODBURY | 06 | LITCHFIELD |
| 318 | LISBON DOT GARAGE | CT | LISBON | 02 | NEW LONDON |
| 319 | LISBON TEXTILE PRINTS, INC. | CT | LISBON | 02 | NEW LONDON |
| 320 | LITTLE COMPTON TOWN DUMP | RI | LITTLE COMPTON | 01 | NEWPORT |
| 321 | LONG WHARF AREA | RI | NEWPORT | 01 | NEWPORT |
| 322 | LONSDALE NARROWS | RI | LINCOLN | 01 | PROVIDENCE |
| 323 | LOOS & CO, INC. | CT | POMFRET | 02 | WINDHAM |
| 324 | LOT NEAR HEWITT | MA | CLARKSBURG | 01 | BERKSHIRE |
| 325 | LOWELL LANDFILL | MA | LOWELL | 05 | MIDDLESEX |
| 326 | LUBRX PRODUCTS INC | MA | NORTH ATTLEBORO | 04 | BRISTOL |
| 327 | LYDALL, INC. | CT | MANCHESTER | 01 | HARTFORD |
| 328 | M S CHAMBERS & SON | CT | SPRAGUE | 02 | NEW LONDON |
| 329 | MACDONALD & WATSON WASTE OIL | RI | JOHNSTON | 02 | PROVIDENCE |
| 330 | MACERA A. DISPOSAL AREA | RI | JOHNSTON | 02 | PROVIDENCE |
| 331 | MACERA S. DISPOSAL AREA | RI | EAST GREENWICH | 02 | KENT |
| 332 | MAGIC CHEMICAL COMPANY | MA | BROCKTON | 10 | PLYMOUTH |
| 333 | MAINE AIR NATIONAL GUARD-BIA | ME | BANGOR | 02 | Penobscot |
| 334 | MAJESTIC MOTORS | RI | LINCOLN | 01 | PROVIDENCE |
| 335 | MALLORY INDUSTRIES, INC. | CT | FARMINGTON | 06 | HARTFORD |
| 336 | MANCHESTER SANITARY LANDFILL | CT | MANCHESTER | 01 | HARTFORD |
| 337 | MANN INDUSTRIES | MA | FRAMINGHAM | 05 | MIDDLESEX |
| 338 | MANOMET LANDFILL | MA | PLYMOUTH | 10 | PLYMOUTH |
| 339 | MANSFIELD BLEACHERY (FORMER) | MA | FOXBORO | 04 | NORFOLK |
| 340 | MANVILLE WELL FIELD | RI | LINCOLN | 01 | PROVIDENCE |
| 341 | MAREK PROPERTY | CT | SOUTHINGTON | 06 | HARTFORD |
| 342 | MARGETTS & SON SEPTIC LAGOONS (FORMER) | MA | HINGHAM | 10 | PLYMOUTH |
| 343 | MARINO PROPERTY | CT | MIDDLETOWN | 02 | MIDDLESEX |
| 344 | MARLBOROUGH DUMP | CT | MARLBOROUGH | 01 | MIDDLESEX |
| 345 | MARRA PROPERTY | MA | WRENTHAM | 03 | NORFOLK |
| 346 | MASHPEE LANDFILL | MA | MASHPEE | 10 | BARNSTABLE |
| 347 | MASTRIANNI GRAVEL PIT | CT | SOUTHINGTON | 06 | HARTFORD |
| 348 | MAYS, MARSHALL & MEIER CO. | RI | WARWICK | 02 | KENT |
| 349 | MCKEE'S GARAGE (FORMER) | RI | CUMBERLAND | 01 | PROVIDENCE |
| 350 | MELVILLE NORTH LANDFILL | RI | PORTSMOUTH | 01 | NEWPORT |
| 351 | MERRIMAN DIV. OF QUAMCO, INC. | MA | HINGHAM | 10 | PLYMOUTH |
| 352 | MESCO, INC. | CT | MILFORD | 02 | NEW HAVEN |
| 353 | METRO NORTH FACILITY | CT | NEW HAVEN | 03 | NEW HAVEN |
| 354 | MICROFAB INC (FORMER) | MA | AMESBURY | 06 | ESSEX |
| 355 | MICRON COMPANY | CT | BERLIN | 01 | HARTFORD |
| 356 | MICROWAVE ASSOC INC | MA | BURLINGTON | 07 | MIDDLESEX |
| 357 | MICROWAVE DEVELOPMENT LABS | MA | NEEDHAM | 11 | NORFOLK |
| 358 | MIKON PRODUCTS | CT | OXFORD | 05 | NEW HAVEN |
| 359 | MILFORD RIVET & MACHINE | CT | MILFORD | 02 | NEW HAVEN |
| 360 | MITRAL CORPORATION | CT | HARWINTON | 06 | LITCHFIELD |
| 361 | MODOC TOWN DUMP | CT | PUTNAM | 02 | WINDHAM |
| 362 | MONSON CHEMICAL (FORMER) | MA | HOPKINTON | 03 | MIDDLESEX |
| 363 | MORLAND VALVE | CT | MANCHESTER | 01 | HARTFORD |
| 364 | MOSS AMERICAN, INC. | CT | NORTH HAVEN | 03 | NEW HAVEN |
| 365 | MOTT METALLURGICAL COMPANY | CT | PLAINVILLE | 06 | HARTFORD |
| 366 | MSM INDUSTRIES | MA | NORTH READING | 06 | MIDDLESEX |
| 367 | MURRAY-CARVER LANDFILL | MA | EAST BRIDGEWATER | 04 | PLYMOUTH |
| 368 | M. EARL ADAMS CO. | RI | JOHNSTON | 02 | PROVIDENCE |
| 369 | M.H. RHODES, INC. | CT | AVON | 06 | HARTFORD |
| 370 | NADEAU LANDFILL | VT | COVENTRY | 01 | ORLEANS |
| 371 | NATICK FEDERAL SAVINGS & LOAN | MA | NATICK | 04 | MIDDLESEX |
| 372 | NATIONAL PERFORATING CORP | MA | CLINTON | 03 | WORCESTER |
| 373 | NATIONAL WELDING AND MANUFACTURING | CT | NEWINGTON | 01 | HARTFORD |
| 374 | NAVAL UNDERWATER SYSTEMS CENTER | CT | EAST LYME | 02 | New London |
| 375 | NEW BEDFORD LANDFILL CITY OF | MA | NEW BEDFORD | 10 | BRISTOL |
| 376 | NEW BOSTON AIR FORCE STATION | NH | NEW BOSTON | 02 | Hillsborough |
| 377 | NEW BRITAIN INDUSTRIAL WASTE AREA | CT | BERLIN | 01 | HARTFORD |
| 378 | NEW ENGLAND AIRCRAFT PLANT #1 | CT | FARMINGTON | 06 | HARTFORD |
| 379 | NEW ENGLAND CONTAINER CO. | RI | SMITHFIELD | 01 | PROVIDENCE |
| 380 | NEW ENGLAND POLE AND WOOD TREATING CORP. | NH | Merrimack | 01 | Hillsborough |
| 381 | NEW ENGLAND PRECISION PROD (D & S SCREW) | RI | SMITHFIELD | 01 | PROVIDENCE |
| 382 | NEW ENGLAND WOODCRAFTING | CT | VERNON | 02 | TOLLAND |
| 383 | NEW LONDON TEXTILE PRINT | CT | WATERFORD | 02 | NEW LONDON |
| 384 | NEW MILFORD LANDFILL | CT | NEW MILFORD | 06 | LITCHFIELD |
| 385 | NEW SHOREHAM TOWN LANDFILL | RI | NEW SHOREHAM | 02 | WASHINGTON |
| 386 | NEWHALL STREET FIELD | CT | HAMDEN | 03 | NEW HAVEN |
| 387 | NEWTOWN LANDFILL | CT | NEWTOWN | 05 | FAIRFIELD |
| 388 | NEWTOWN LANDFILL (INACTIVE) | CT | NEWTOWN | 05 | FAIRFIELD |
| 389 | NINIGRET NWR | RI | CHARLESTOWN | 02 | Washington |
| 390 | NITE BRITE SIGN COMPANY, INC. | CT | MONROE | 05 | FAIRFIELD |
| 391 | NORANDA METAL INDUSTRIES | CT | NEWTOWN | 05 | FAIRFIELD |
| 392 | NORFOLK CONVEYOR DIV | MA | COHASSET | 10 | NORFOLK |
| 393 | NORTH ADAMS LANDFILL | MA | NORTH ADAMS | 01 | BERKSHIRE |
| 394 | NORTH ATTLEBORO LANDFILL | MA | NORTH ATTLEBORO | 03 | BRISTOL |
| 395 | NORTH CARVER LANDFILL | MA | CARVER | 10 | PLYMOUTH |
| 396 | NORTH EAST UTILITIES | CT | BRISTOL | 06 | HARTFORD |
| 397 | NORTH END DISPOSAL AREA | CT | WATERBURY | 03 | NEW HAVEN |
| 398 | NORTH KINGSTOWN LANDFILL #1 | RI | NORTH KINGSTOWN | 02 | WASHINGTON |
| 399 | NORTH KINGSTOWN LANDFILL #2 | RI | NORTH KINGSTOWN | 02 | WASHINGTON |
| 400 | NORTH PROVIDENCE LANDFILL | RI | NORTH PROVIDENCE | 01 | PROVIDENCE |
| 401 | NORTH SCITUATE DUMP | RI | SCITUATE | 02 | PROVIDENCE |
| 402 | NORTH SMITHFIELD NIKE CONTROL AREA | RI | NORTH SMITHFIELD | 01 | Providence |
| 403 | NORTHEAST INVESTMENT CO. | MA | DRACUT | 05 | MIDDLESEX |
| 404 | NORTHEAST UTILITIES | CT | VERNON | 02 | TOLLAND |
| 405 | NORTHEAST UTILITIES | CT | WINDHAM | 02 | WINDHAM |
| 406 | NORTHEAST UTILITIES | CT | WATERBURY | 03 | NEW HAVEN |
| 407 | NORTHEAST UTILITIES | CT | WALLINGFORD | 03 | NEW HAVEN |
| 408 | NORTHEAST UTILITIES | CT | NORWALK | 04 | FAIRFIELD |
| 409 | NORTHEAST UTILITIES | CT | SHELTON | 05 | FAIRFIELD |
| 410 | NORTHEAST UTILITIES | CT | DANBURY | 05 | FAIRFIELD |
| 411 | NORTHEAST UTILITIES (FRMR COAL GASIF.) | CT | PUTNAM | 02 | WINDHAM |
| 412 | NORWALK LANDFILL | CT | NORWALK | 04 | FAIRFIELD |
| 413 | NORWALK POWDERED METALS | CT | NORWALK | 04 | FAIRFIELD |
| 414 | NUCLEAR TECHNOLOGY CORPORATION | CT | HEBRON | 01 | TOLLAND |
| 415 | NULUXE CLEANERS INC. | RI | COVENTRY | 02 | KENT |
| 416 | O'CONNOR COMPANY MAIN OFFICE | ME | AUGUSTA | 01 | KENNEBEC |
| 417 | O'SULLIVAN'S ISLAND | CT | DERBY | 05 | NEW HAVEN |
| 418 | OLD QUARRY DISPOSAL SITE | RI | NORTH KINGSTOWN | 02 | WASHINGTON |
| 419 | OLSON BROTHERS COMPANY | CT | PLAINVILLE | 06 | HARTFORD |
| 420 | OMEGA LABORATORIES | MA | ROWLEY | 06 | ESSEX |
| 421 | OSLO CONTROL | CT | CHESHIRE | 05 | NEW HAVEN |
| 422 | PACKER ROAD LANDFILL | CT | CANTERBURY | 02 | WINDHAM |
| 423 | PANAMA STREET PROPERTY | MA | EAST LONGMEADOW | 02 | HAMPDEN |
| 424 | PAPISH, INC. | CT | DANBURY | 05 | FAIRFIELD |
| 425 | PARAMOUNT CLEANERS & DYERS | MA | BROCKTON | 11 | PLYMOUTH |
| 426 | PATRIARCA PROPERTY | RI | SMITHFIELD | 01 | PROVIDENCE |
| 427 | PAWTUCKET INCINERATOR RESIDUE LANDFILL | RI | PAWTUCKET | 01 | PROVIDENCE |
| 428 | PAWTUCKET WATER SUPPLY BOARD, PROP OF | RI | CUMBERLAND | 01 | PROVIDENCE |
| 429 | PEABODY LANDFILL | MA | PEABODY | 06 | ESSEX |
| 430 | PEERLESS SCREW | CT | CHESHIRE | 05 | NEW HAVEN |
| 431 | PERCEY PROPERTY | VT | BENNINGTON | 01 | BENNINGTON |
| 432 | PERKIN ELMER CORPORATION | CT | WILTON | 05 | FAIRFIELD |
| 433 | PETROLANE COMPANY | NH | ROCHESTER | 01 | STRAFFORD |
| 434 | PFIZER, INC. | CT | LEDYARD | 02 | NEW LONDON |
| 435 | PHALO CORP | MA | SHREWSBURY | 03 | WORCESTER |
| 436 | PHILIPS COMPONENTS | RI | NORTH SMITHFIELD | 01 | PROVIDENCE |
| 437 | PHILLIPS PROPERTY | CT | MERIDEN | 05 | NEW HAVEN |
| 438 | PINE SWAMP (OLIN CORPORATION) | CT | HAMDEN | 03 | NEW HAVEN |
| 439 | PIONEER PRODUCTS - 1 | CT | EAST HADDAM | 02 | WINDHAM |
| 440 | POLY TOP CORP. | RI | NORTH SMITHFIELD | 01 | PROVIDENCE |
| 441 | PONTIAC ENTERPRISES LTD. | RI | WARWICK | 02 | KENT |
| 442 | PORTLAND BANGOR WASTE OIL CO | ME | WELLS | 01 | YORK |
| 443 | PORTLAND MUNICIPAL LANDFILL | CT | PORTLAND | 01 | MIDDLESEX |
| 444 | PORTLAND SAND PIT | CT | PORTLAND | 01 | MIDDLESEX |
| 445 | PORTSMOUTH MELVILLE DUMP | RI | PORTSMOUTH | 01 | NEWPORT |
| 446 | PORTSMOUTH TOWN DUMP | RI | PORTSMOUTH | 01 | NEWPORT |
| 447 | POST NARROW FABRICS COMPANY | CT | ANDOVER | 02 | TOLLAND |
| 448 | PROCTOR DUMP | VT | PITTSFORD | 01 | RUTLAND |
| 449 | PRUDENCE ISLAND DISPOSAL AREA | RI | PORTSMOUTH | 01 | NEWPORT |
| 450 | PUTNAM DOT GARAGE | CT | PUTNAM | 02 | WINDHAM |
| 451 | PUTNEY PAPER COMPANY SLUDGE DISPOSAL | VT | PUTNEY | 01 | WINDHAM |
| 452 | QUALITY NAME PLATE | CT | GLASTONBURY | 01 | HARTFORD |
| 453 | QUINCY QUARRY | MA | QUINCY | 11 | NORFOLK |
| 454 | QUINIQUACK FARM | CT | KILLINGLY | 02 | WINDHAM |
| 455 | R A M CHROMIUM CORPORATION | CT | WILLINGTON | 02 | TOLLAND |
| 456 | R & N TIRE AND AUTO CENTER | CT | EAST GRANBY | 06 | HARTFORD |
| 457 | R & R JEWELRY INC. | RI | SCITUATE | 02 | PROVIDENCE |
| 458 | Ray Plastic Factory | MA | Winchendon | 01 | Worcester |
| 459 | RAILROAD DEPOT | MA | NEW BEDFORD | 04 | BRISTOL |
| 460 | RAPID ELECTRIC COMPANY, INC. | CT | BROOKFIELD | 05 | FAIRFIELD |
| 461 | RATHE BROTHER'S LANDFILL | VT | COLCHESTER | 01 | CHITTENDEN |
| 462 | RAYEX | CT | PLAINVILLE | 06 | HARTFORD |
| 463 | RAYTHEON CORP. | MA | LOWELL | 05 | MIDDLESEX |
| 464 | RAYTHEON MISSLE SYSTEMS DIVISION | MA | BEDFORD | 05 | MIDDLESEX |
| 465 | RCA CORP (FORMER) | MA | BURLINGTON | 07 | MIDDLESEX |
| 466 | Reed Rolled Thread Die Co. | MA | Holden | 02 | Worcester |
| 467 | REDDING MUNICIPAL LANDFILL | CT | REDDING | 05 | FAIRFIELD |
| 468 | REFUSE GARDENS | CT | ELLINGTON | 02 | TOLLAND |
| 469 | REGIS TANNERY | NH | RAYMOND | 01 | ROCKINGHAM |
| 470 | REICHOLD CHEMICALS INC | MA | ANDOVER | 05 | ESSEX |
| 471 | RELIABLE ELECTRONIC FINISHING CO (FORMER) | MA | CANTON | 11 | NORFOLK |
| 472 | REXNORD KNIFE DIVISION | MA | ACTON | 05 | MIDDLESEX |
| 473 | RICHMOND TOWN LANDFILL | RI | RICHMOND | 02 | WASHINGTON |
| 474 | ROBBINS PROPERTY | ME | ELLSWORTH | 02 | HANCOCK |
| 475 | ROCKLAND IND INC (FORMER) | MA | MIDDLEBORO | 04 | PLYMOUTH |
| 476 | ROGERS MANUFACTURING COMPANY | CT | MIDDLEFIELD | 02 | MIDDLESEX |
| 477 | RONCARI TRAP ROCK QUARRY | CT | EAST GRANBY | 06 | HARTFORD |
| 478 | ROSER TANNERY | CT | GLASTONBURY | 01 | HARTFORD |
| 479 | ROY BROS HAULERS | MA | BILLERICA | 05 | MIDDLESEX |
| 480 | ROY MACHINERY AND SALES | CT | FARMINGTON | 06 | HARTFORD |
| 481 | ROYAL MACHINE & TOOL | CT | BERLIN | 01 | HARTFORD |
| 482 | ROYCE ALUMINUM (FORMER) | MA | TAUNTON | 09 | BRISTOL |
| 483 | RUTLAND CITY LANDFILL | VT | RUTLAND | 01 | RUTLAND |
| 484 | RYE HILL CIRCLE - CONNECTICUT CORRECTIONAL INDUSTRIES | CT | SOMERS | 03 | TOLLAND |
| 485 | RYE PESTICIDE SITE | CT | EAST WINDSOR | 01 | HARTFORD |
| 486 | RYTHER PURDY LUMBER COMPANY | CT | OLD SAYBROOK | 02 | MIDDLESEX |
| 487 | R.P. OLSON AND SON COMPANY | CT | SOUTHINGTON | 06 | HARTFORD |
| 488 | R.R. DONNELLEY & SONS COMPANY | CT | OLD SAYBROOK | 02 | MIDDLESEX |
| 489 | S PORTLAND SHIPYARD MARINE RAILWAYS CORP | ME | SOUTH PORTLAND | 01 | CUMBERLAND |
| 490 | SACHUEST POINT NWR | RI | MIDDLETOWN | 01 | Newport |
| 491 | SAFEWAY PRODUCTS, INC. | CT | CROMWELL | 01 | MIDDLESEX |
| 492 | SANFORD MUNICIPAL LANDFILL | ME | SANFORD | 01 | YORK |
| 493 | SATIN AMERICAN CORPORATION | CT | SHELTON | 05 | FAIRFIELD |
| 494 | SAYBROOKE STRIP SHOP | CT | OLD SAYBROOK | 02 | MIDDLESEX |
| 495 | SCA/CAL'S | MA | BERKLEY | 04 | [Unknown County] |
| 496 | SCITUATE TOWN LANDFILL | RI | SCITUATE | 02 | PROVIDENCE |
| 497 | SCOFIELDTOWN ROAD PARK | CT | STAMFORD | 04 | FAIRFIELD |
| 498 | SEPTAGE DISPOSAL AREA | RI | SOUTH KINGSTOWN | 02 | WASHINGTON |
| 499 | SEYMOUR BRASS TURNING | CT | SEYMOUR | 05 | NEW HAVEN |
| 500 | SEYMOUR SPECIALTY WIRE | CT | SEYMOUR | 05 | NEW HAVEN |
| 501 | SHAWS PLAZA | MA | SHARON | 04 | NORFOLK |
| 502 | SHELTON CLOSED DUMP | CT | SHELTON | 05 | FAIRFIELD |
| 503 | SHELTON RUBBER DUMP | CT | SHELTON | 05 | FAIRFIELD |
| 504 | SHERWOOD MEDICAL COMPANY | CT | WATERBURY | 05 | NEW HAVEN |
| 505 | SHORE CHEMICAL | CT | MADISON | 03 | NEW HAVEN |
| 506 | SIMSBURY TOWN LANDFILL | CT | SIMSBURY | 06 | HARTFORD |
| 507 | SMITH'S JUNKYARD | ME | MEDDYBEMPS | 02 | WASHINGTON |
| 508 | SMITHFIELD TOWN LANDFILL | RI | SMITHFIELD | 01 | PROVIDENCE |
| 509 | SON-WAY CORPORATION | CT | NEWINGTON | 01 | HARTFORD |
| 510 | SONECO SERVICE | CT | GROTON | 02 | NEW LONDON |
| 511 | SOUTH END DISPOSAL AREA | CT | WATERBURY | 05 | NEW HAVEN |
| 512 | SOUTH WINDHAM LANDFILL | CT | WINDHAM | 02 | WINDHAM |
| 513 | SOUTHBURY MUNICIPAL LANDFILL | CT | SOUTHBURY | 06 | NEW HAVEN |
| 514 | SPERRY SEMICONDUCTOR | CT | NORWALK | 04 | FAIRFIELD |
| 515 | SPRAGUE ELECTRIC | MA | NORTH ADAMS | 01 | BERKSHIRE |
| 516 | SPRAGUE ELECTRIC CO | MA | NORTH ADAMS | 01 | BERKSHIRE |
| 517 | SPRAGUE TOWN DISPOSAL FACILITY | CT | SPRAGUE | 02 | NEW LONDON |
| 518 | ST ALBANS GAS & LIGHT PROPERTY (FORMER) | VT | ST ALBANS | 01 | FRANKLIN |
| 519 | STAFFORD MUNICIPAL LANDFILL | CT | STAFFORD | 02 | TOLLAND |
| 520 | STANHOME INC | MA | EASTHAMPTON | 01 | HAMPSHIRE |
| 521 | STAR CHEMICAL | MA | WESTFORD | 05 | MIDDLESEX |
| 522 | STARBUCK SPRAGUE, INC. | CT | WATERBURY | 02 | NEW HAVEN |
| 523 | STERLING DOT GRAVEL BANK | CT | STERLING | 02 | WINDHAM |
| 524 | STERLING SUPPLY CORP (FORMER) | MA | NORTH READING | 06 | MIDDLESEX |
| 525 | STEVEN'S SCRAP YARD | ME | LITTLETON | 02 | AROOSTOCK |
| 526 | STEVENS COMPANY, INC. | CT | THOMASTON | 06 | LITCHFIELD |
| 527 | STEVENS PAPER MILL | CT | WINDSOR | 01 | HARTFORD |
| 528 | STRUCTURE 214 | RI | PORTSMOUTH | 01 | NEWPORT |
| 529 | STUDLEY PROPERTY | RI | WEST GREENWICH | 02 | KENT |
| 530 | ST. JOHNSBURY DUMP | VT | ST. JOHNSBURY | 01 | CALEDONIA |
| 531 | SUBURBAN EXCAVATORS | CT | CHESHIRE | 05 | NEW HAVEN |
| 532 | SUDBURY LABORATORY FACILITIES (FORMER) | MA | SUDBURY | 05 | MIDDLESEX |
| 533 | SUPERIOR STEEL PRODUCTS CORPORATION | CT | CHESHIRE | 05 | NEW HAVEN |
| 534 | SWANZEY SEPTAGE PITS | NH | SWANZEY | 02 | CHESHIRE |
| 535 | SWIFT ADHESIVES AND COATINGS | CT | WEST HAVEN | 03 | NEW HAVEN |
| 536 | SWIFT J. CHEMICAL COMPANY | CT | CANTON | 06 | HARTFORD |
| 537 | S. GOLDFEDER, INC. | CT | WALLINGFORD | 03 | NEW HAVEN |
| 538 | TECH WELD CORP. (FORMER) | MA | BURLINGTON | 07 | MIDDLESEX |
| 539 | THOMASTON LANDFILL | CT | THOMASTON | 06 | LITCHFIELD |
| 540 | THOMPSON DOT GARAGE | CT | THOMPSON | 02 | WINDHAM |
| 541 | TIDEWATER COAL GASSIFICATION PLANT | RI | PAWTUCKET | 01 | PROVIDENCE |
| 542 | TIMEX CLOCK CO (FORMER) | MA | ASHLAND | 05 | MIDDLESEX |
| 543 | TISBURY SANI LANDFILL | MA | TISBURY | 12 | DUKES |
| 544 | TIVERTON TOWN DUMP | RI | TIVERTON | 01 | NEWPORT |
| 545 | TIVERTON TOWN LANDFILL #2 | RI | TIVERTON | 01 | NEWPORT |
| 546 | TOLLAND LANDFILL | CT | TOLLAND | 02 | TOLLAND |
| 547 | TOPSHAM PLATING | VT | TOPSHAM | 01 | ORANGE |
| 548 | TOWNSEND HARBOR ROAD PROPERTY | MA | LUNENBURG | 03 | WORCESTER |
| 549 | TOWNSEND HIGHWAY DEPT FACILITY | MA | TOWNSEND | 01 | MIDDLESEX |
| 550 | TOWNSEND/TEXTRON | MA | BRAINTREE | 11 | NORFOLK |
| 551 | TREMBLAY BARREL | MA | HATFIELD | 01 | HAMPSHIRE |
| 552 | TRI-CITY PLAZA | CT | VERNON | 02 | TOLLAND |
| 553 | TRUK-AWAY LANDFILL | RI | WARWICK | 02 | KENT |
| 554 | TUCKER'S INDUSTRIAL DUMP | RI | JOHNSTON | 02 | PROVIDENCE |
| 555 | TYLER AUTOMATICS | CT | THOMASTON | 06 | LITCHFIELD |
| 556 | UNIV OF CONNECTICUT LANDFILL/WASTE PITS | CT | MANSFIELD | 05 | TOLLAND |
| 557 | US ARMY COLD REG RESEARCH & ENGINEER LAB | NH | HANOVER | 02 | Grafton |
| 558 | US WIND POWER (FORMER) | MA | BURLINGTON | 07 | MIDDLESEX |
| 559 | USM FASTNER GROUP | CT | SHELTON | 05 | FAIRFIELD |
| 560 | U.S. CHEMICAL CORPORATION (FORMER) | CT | CHESHIRE | 05 | NEW HAVEN |
| 561 | VERPLEX COMPANY | CT | ESSEX | 02 | MIDDLESEX |
| 562 | VILLAGE STRIPPER | CT | HEBRON | 01 | TOLLAND |
| 563 | VINAGRO J. LANDFILL | RI | JOHNSTON | 02 | PROVIDENCE |
| 564 | VINAGRO L. LANDFILL | RI | JOHNSTON | 02 | PROVIDENCE |
| 565 | VITALE FLYASH PIT | MA | BEVERLY | 06 | ESSEX |
| 566 | VITEK COMPANY | CT | SHELTON | 05 | FAIRFIELD |
| 567 | W R GRACE DARAMIC PLANT | MA | ACTON | 05 | MIDDLESEX |
| 568 | WALTHAM INDUSTRIAL LAB | MA | WALTHAM | 08 | MIDDLESEX |
| 569 | WARREN LANDFILL | MA | WARREN | 02 | WORCESTER |
| 570 | WARREN TOWN LANDFILL | RI | WARREN | 01 | BRISTOL |
| 571 | WASLEY LIGHTING COMPANY/AMF CORPORATION | CT | ESSEX | 02 | MIDDLESEX |
| 572 | WATERBURY CENTERLESS GRINDING COMPANY | CT | SOUTHINGTON | 06 | HARTFORD |
| 573 | WATERVILLE GAS WORKS (FORMER) | ME | WATERVILLE | 01 | KENNEBEC |
| 574 | WAUCANTUCK MILLS (FORMER) | MA | UXBRIDGE | 03 | WORCESTER |
| 575 | Weymouth Neck Landfill | MA | Weymouth | 11 | Norfolk |
| 576 | WELLS METAL FINISHING (FORMER) | MA | DRACUT | 05 | MIDDLESEX |
| 577 | WEST GREENWICH TOWN LANDFILL | RI | WEST GREENWICH | 02 | KENT |
| 578 | WEST STREET PROPERTY | MA | HATFIELD | 01 | HAMPSHIRE |
| 579 | WEST WARWICK TOWN LANDFILL | RI | WEST WARWICK | 02 | KENT |
| 580 | WESTERLY TOWN LANDFILL | RI | WESTERLY | 02 | WASHINGTON |
| 581 | WESTFIELD GAS & ELECTRIC DEPT | MA | WESTFIELD | 01 | HAMPDEN |
| 582 | WESTON LANDFILL TOWN OF | CT | WESTON | 04 | FAIRFIELD |
| 583 | WESTPORT LANDFILL/LIBRARY | CT | WESTPORT | 04 | FAIRFIELD |
| 584 | WESTVACO CORPORATION | CT | MERIDEN | 05 | NEW HAVEN |
| 585 | WHITCRAFT CORPORATION | CT | EASTFORD | 02 | WINDHAM |
| 586 | WHITNON-SPINDLE | CT | FARMINGTON | 06 | HARTFORD |
| 587 | WILBUR CROSS COMMONS BUSINESS PARK | CT | HAMDEN | 03 | NEW HAVEN |
| 588 | WILKINSON CHEMICALS | CT | NORTH HAVEN | 03 | NEW HAVEN |
| 589 | WILLINGTON DOT GARAGE | CT | WILLINGTON | 02 | TOLLAND |
| 590 | WILLINGTON MUNICIPAL LANDFILL | CT | WILLINGTON | 02 | TOLLAND |
| 591 | WILTON LANDFILL | CT | WILTON | 05 | FAIRFIELD |
| 592 | WIN MANUFACTURING COMPANY, INC. | CT | EAST HAVEN | 03 | NEW HAVEN |
| 593 | WINCHESTER ELECTRONICS | CT | WATERTOWN | 06 | LITCHFIELD |
| 594 | WINCHESTER LANDFILL | CT | WINCHESTER | 01 | LITCHFIELD |
| 595 | WINDHAM MUNICIPAL DUMP | CT | WINDHAM | 02 | WINDHAM |
| 596 | WOLCOTT MUNICIPAL LANDFILL | CT | WOLCOTT | 05 | NEW HAVEN |
| 597 | WOMPATUCK STATE PARK (FORMER) | MA | HINGHAM | 10 | PLYMOUTH |
| 598 | WORCESTER SPINNING & FINISHING COMPANY | MA | LEICESTER | 03 | WORCESTER |
| 599 | WORCESTER TOOL & STAMPING CO | MA | LEICESTER | 03 | WORCESTER |
| 600 | YANKEE ELECTRONIC SERVICES, INC. | CT | BETHEL | 05 | FAIRFIELD |
| 601 | YOUNG LANDFILL | VT | HIGHGATE | 01 | FRANKLIN |
| 602 | YSG PROPERTIES | CT | COVENTRY | 02 | TOLLAND |
| 603 | ZOLLO DRUM COMPANY | CT | BEACON FALLS | 05 | NEW HAVEN |