PPG INDUSTRIES, SUCCESSOR TO DITZLER PAINT COMPANY, AND REICHHOLD CHEMICAL COMPANY WERE TWO OF THE GENERATORS OF WASTES FOUND AT THE SITE. THEY DROPPED OUT OF NEGOTIATIONS FOR A SETTLEMENT OF THE REMEDIAL DESIGN AND REMEDIAL ACTION WORK FOR THE SITE WITH THE U.S. AND PRPS AS A CONSEQUENCE OF ALLOCATION DISPUTES BETWEEN THE PRPS. PPG AND REICHHOLD, HOWEVER, INDICATED A DESIRE TO SETTLE WITH THE UNITED STATES IN REGARDS TO THE U.S. REMAINING CLAIMS. THE RD/RA CONSENT DECREE HAD LEFT HALF OF THE PAST COSTS (APPROX. 2.5 MILLION) UNRECOVERED. THEREFORE, NEGOTIATIONS WITH THE 2 COMPANIES WAS NEGOTIATED FOR A SETTLEMENT OF REMAINING 107 CLAIMS AND A SETTLEMENT REACHED. THE REICHHOLD/PPG CD WAS FILED AT THE SAME TIME AS THE RD/RA CD. BOTH WERE FILED UNDER THE SAME COMPLAINT (LAWSUIT).