SITE NAME, LOCATION, DESCRIPTION: THE CARTER INDUSTRIALS FACILITY ( CARTER ) IS LOCATED AT 4690 HUMBOLDT ST., DETROIT, MI., ABOUT HALF A MILE SOUTHEAST OF THE INTERSECTION OF INTERSTATE HIGHWAYS 94 AND 96. THE FOUR-ACRE SITE IS SITUATED IN A MIXED RESIDENTIAL AND LIGHT INDUSTRIAL AREA NEAR DOWNTOWN DETROIT. IT IS BORDERED ON THE NORTH BY GRAND TRUCK WESTERN AND PENN CENTRAL RAILROAD TRACKS AND ON THE SOUTH IS FOREST ST., ALONG WHICH BOTH RESI DENTIAL AND COMMERCIAL PROPERTIES ARE LOCATED. IMMEDIATELY TO THE EAST IS A RESIDENTIAL AREA, AND TO THE WEST IS COMMER CIAL PROPERTY. THE 1980 CENSUS REPORTS THAT TRACTS WHICH IMMEDIATELY ADJOIN THE SITE HAVE A TOTAL POPULATION OF OVER 21,000 PERSONS. SITE HISTORY: FROM 1966 TO 1986, THE CARTER SITE WAS USED TO STORE AND SALVAGE SCRAP METAL. FROM 1966 TO 1971, THE SITE WAS OPERA- TED BY SPECTOR-CARTER METAL, WHILE FROM 1971 TO 1986, CARTER INDUSTRIALS, INC. OPERATED THE SITE. A PORTION OF THE SCRAP METAL ITEMS ACCEPTED AT THE CARTED SITE INCLUDED ELECTRICAL TRANSFORMERS AND CAPACITORS. DURING SALVAGE OPERATIONS, DIE LECTRIC FLUIDS CONTAINING PCBS WERE SPILLED FROM TRANSFOR- MERS AND CAPACITORS, CONTAMINATING SOIL IN THE IMMEDIATE AREA. COMMERCIAL, MUNICIPAL AND RESIDENTIAL PROPERTIES ADJA CENT TO THE SITE WERE CONTAMINATED BY DIRECT RUNOFF, WIND- BLOWN DUST, AND TRACKING OF SPILLED MATE