GROUNDWATER AND SOIL CONTAMINATION INVESTIGATORY ORDER AT A FORMER LEAD SMELTER SITE. CASE OPENED ORC REGION 10 9/29/86; CASE OPENED ENFORCEMENT DOCKET 9/18/87. * SEAFAB FACILITY IS LOCATED ON HARBOR ISLAND, AN INDUSTRIAL AREA WITHIN THE CITY LIMITS OF SEATTLE, WA. HARBOR ISLAND IS SURROUNDED BY WATER, AS IT IS LCOATED IN THE PUGET SOUND, ABOUT 1 MILE FROM DOWNTOWN SEATTLE. THE SEAFAB SITE IS A FORMER LEAD SMELTER AND REFINERY, WHICH IS CURRENTLY USED AS A LEAD FABRICATION OPERATION. THE FACILITY MAINTAINED SEVERAL REGULATED WASTE PILES AND ONE SURFACE IMPOUNDMENT, AS WELL AS SEVERAL OTHER NON- REGULATED UNITS WHICH CONTAINED HAZARDOUS WASTE. THE PILES WERE CLOSED THROUGH REMOVAL OF WASTES, AND THE SURFACE IMPOUNDMENT IS CURRENTLY UNDERGOING CLOSURE. ALL OF THE UNITS WHICH CONTAINED OR CONTAIN HAZARDOUS WASTE AND SEVERAL REPORTED SPILLS OF HAZARDOUS WASTE HAVE CONTAMINATED THE SITE SEVERELY. GROUNDWATER BENEATH THE SITE AT ABOUT 10 FEET DISCHARGES TO THE DUWAMISH RIVER, A MAJOR SALMON MIGRATION RIVER, AND THE PUGET SOUND. SURFACE WATER RUNOFF IS DISCHARGED INTO THE LOCAL STORM SEWER SYSTEM, WHICH ALSO DISCHARGES DIRECTLY TO THE PUGET SOUND. EPA BEGAN INVESTIGATION OF THE SITE ABOUT 2 YEARS AGO, WHEN THE STATE OF WASHINGTON DEPT OF