ROBINTECH INC/NATIONAL PIPE CO SUPERFUND SITE, OCCUPIES 12.7 ACRES IN AN AREA ZONED FOR COMMERCIAL/IND USE AND IS AN NPL SITE. THE OPERATIONS CONDUCTED AT THE SITE HAVE INCLUDED ELECTROPLATING, POLY VINYL CHLORIDE PIPE EXTRUSION, AND THE ASSEMBLE OF ELECTRONIC CABLE, ACCELERATOR CABLES, AIRPLANE ENGINE MOUNTS AND CIRCUIT BOARDS. VARIOUS COMPANIES HAVE OWNED OR OPERATED FACILITIES AT THE SITE SINCE 1966. DEFENDANT'S CONTRACTOR, CONDUCTED THE RI/FS FROM 1988 TO 1991. EPA ISSUED A ROD FOR OU1 ON 3/31/92. ON 9/29/92, A UAO WAS ISSUED BY EPA TO BUFFTON AND ELECTRO-MECH, TO REQUIRE THEM TO DESIGN AND IMPLEMENT THE ROD-SELECTED REMEDY. AFTER THE PRPS CONDUCTED FURTHER SITE INVESTIGATIONS RELATING TO POSSIBLE LEAD CONTAMINATION, EPA ISSUED A ROD FOR OU2 ON 3/30/93. THE PRE-RD-RELATED FIELD WORK WAS COMPLETED 8/1996. BASED UPON THIS FIELD WORK, IT WAS DETERMINED THAT THE 1992 ROD-SELECTED REMEDY FOR OU1 WAS NOT FEASIBLE. ON 4/25/97, EPA ISSUED A NEW PRAP FOR OU1. FOLLOWING EXPRIATION OF THE PUBLIC COMMENT PERIOD, EPA ISSUED AN AMENDED ROD ON 7/25/97 AND DEFENDANT REQUESTED A CONVERSION OF THE UAO TO A CONSENT DECREE.