THE WAUSAU NPL SITE IS A CONTAMINATED AQUIFER LOCATED UNDER THE WAUSAU, WISCONSIN AREA. THE SURFACE OF THE SITE IS TOPOGRAPHICALLY DIVIDED IN HALF BY THE WISCONSIN RIVER, WHILE THE QAUIFER ITSELF IS ONE CONTINUOUS UNIT. - THE SITE UNDERWENT A U.S. EPA FUND-LEAD REMOVAL IN 1984, AND IS CURRENTLY THE SUBJECT OF A FUND-LEAD PHASED OPERABLE UNIT REMEDIAL INVESTIGATION AND FEASIBILITY STUDY (RI/FS) AND REMEDIAL DESIGN AND REMDIAL ACTION (RD/RA). CONTAMINANTS ADDRESSED BY THE REMOVASL WERE VOLATILE ORGANIC COMPOUNDS (VOC) PERCHLOROETYLENE (PCE), TRICHLOROETHYLENE (TCE), AND DICHLOROETHYLENE (DCE). THE REMEDIAL ACTIONS ADDRESS OTHER CONTAMINANTS IN ADDITION TO THE VOCS. - PHASE I OF THE RI/FS IS COMPLETE AND AN OPERABLE UNIT RECORD OF DECISION (ROD) HAS BEEN SIGNED (DECEMBER 23, 1988). THE ROD SELECTED AND INTERIM OPERABLE UNIT VOC PLUME EXTRACTION WELL REMEDY TO BE IMPLEMENTED ON THE WESTERN ONE-HALF OF THE SITE. TWO OF THE PRPS FOR THE REMEDIAL ACTION, THE CITY OF WAUSAU AND THE MARATHON ELECTRIC CORPORATION, HAVE AGREED TO PERFORM THE OPERABLE UNIT. A FINAL RD/RA CONSENT DECREE HAS BEEN RECEIVED WITH THE TWO PRPS SIGNATURES AFFIXED. THE STATE OF WISCONSIN HAS ALSO SIGNED THE RD/RA CONSENT DECREE. - THE SITE WAS FIRST ADDRESSED BY THE