THIS IS PROPOSED ACTION AGAINST CLEAN HARBORS OF NATICK, INC., ET AL., TO RECOVER PST COSTS UNDER SECTION 107 OF CERCLA, TO ESTABLISH LIABILITY AS TO FUTURE COSTS TO BE INCURRED UNDER SECTION 104, AND TO GAIN ACCESS TO THE SITE PURSUANT TO SECTION 104 IN ORDER TO TAKE APPROPRIATE RESPONSE ACTIONS. THIS CASE INVOLVES THE KEEFE ENVIRONMENTAL SERVICES SITE IN EPPING, NEW HAMPSHIRE, WHICH WAS LISTED ON THE NPL IN 1981. THE SITE IS AN ABANDONED HAZARDOUS WASTE DISPOSAL FACILITY WHICH OPERATED FOR TWO AND A HALF YEARS, BETWEEN 1978 AND 1981. WHEN THE FACILITY WAS SHUT DOWN IN 1981, THOUSANDS OF DETERIORATING SURFACE CONTAINERS OF WASTE, AS WELL AS A LARGE WASTE-FILLED LAGOON WHICH THREATENED TO OVERFLOW DURING PERIODS OF HEAVY PRECIPITATION, REMAINED ON SITE. DURING THE REMOVAL ACTIONS AND REMEDIAL INVESTIGATION THAT ENSUED, AN ASSORTMENT OF HAZARDOUS SUBSTANCES WERE IDENTIFIED IN THE SOIL AND GROUNDWATER AT THE SITE. MOST OF THE RESPONSIBLE PARTIES ARE FORMER CUSTOMERS OF KEEFE ENVIRONMENTAL SERVICES, INC. (KES), WHO WERE IDENTIFIED ON THE BASIS OF KES' BUSINESS RECORDS. AN EARLIER SETTLEMENT RELATIVE TO THIS SITE IS EMOBODIED IN A MARCH 1986 CONSENT DECRFEE WHICH WAS EXECUTED BY 129 PRPS. PURSUANT TO THAT DECREE, THE GOVERNMENT RETAINED ITS RIGHT TO GO BACK TO THE SETTLORS FOR ANY SHORTFALL IT IS UNABLE TO RECOVER FROM THE NONSETTLO