NORTHSIDE SANITARY LANDFILL (NSL) IS AN NPL FACILITY LOCA- TED NEAR ZIONSVILLE, IN BOONE COUNTY, IN. ON SEPTEMBER 25, 1987 THE RA SIGNED A RECORD OF DECISION (ROD) WHICH SELECTED A PERMANENT COMBINED REMEDY FOR NSL AND ENVIROCHEM OR ECC, ANOTHER NPL SITE ADJACENT TO NSL. IT IS ANTICIPATED THAT SE PARATE REMEDIES FOR THE TWO SITES WILL BE IMPLEMENTED BY DIS TRICT PRP GROUPS PURSUANT TO AMENDED RODS. SEPARATE CONSENT DECREES WHICH ADDRESS THE RESPONSIBILITIES FOR IMPLEMENTA- TION OF THE REMEDIES AND PAYMENT FOR A PORTION OF PAST GOV'T COSTS AT EACH FACILITY HAVE BEEN OR WILL SOON BE, REFERRED TO DOJ. NONE OF THE ALLEGED OWNERS OR OPERATORS SIGNED EITHER CONSENT DECREE. APPROXIMATELY FORTY FIVE GENERATORS / TRANSPORTERS IDENTIFIED AS POTENTIALLY RESPONSIBLE PARTIES (PRPS) FAILED TO JOIN THE SETTLEMENT SET OUT IN THE NSL CON- SENT DECREE. THE CONSENT DECREE REQUIRES THE SETTLING DEFEN DANTS TO PERFORM THE REMEDIAL ACTION CHOSEN IN THE AMENDED ROD AND WAIVES THE U.S. CLAIM AGAINST THEM FOR APPROXIMATELY TWO MILLION DOLLARS IN PAST COSTS INCURRED BY EPA AT THE FACILITY. (A SETTLEMENT EVALUATION AND THE PROPOSED CONSENT DECREE ARE BEING FORWARDED CONTEMPORANEOUSLY WITH THIS REFER RAL). EPA PROPOSES TO FILE SUIT AGAINST ALL ALLEGED OWNERS AND OPERATORS, AS WELL AS AGAINST A SELECT GROUP OF NON SETTLING GENERATORS AND TRANSPORTERS, TO RECOVER THE REMAINING RE- SPONSE COSTS. THE DECISION NOT TO NAM