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SMTH <br /> tand waste water treatment (WWT). Shinko constructed the WWW facility (WWTF) in 1982 for <br /> the treatment of process water. <br /> Shinko stored bulk chemicals used in their operation in the vault of Area 11. Several types of <br /> hazardous waste generated from their operations were stored in the vault of Area 10, including <br /> acid, caustic, and cyanide solutions. These wastes were pre-treated in the WWTF area (Area <br /> ' 10 and between this area and the building). <br /> ' In 1990, Exceltrans performed a partial closure of the WWTF area. This included thorough <br /> cleaning of all process equipment. Since that time, all of the equipment has been removed from <br /> ' the site. <br /> In October 1994, Greensfelder & Associates conducted a subsurface investigation at the site. <br /> The investigation included drilling six borings, collecting soil and groundwater samples for <br /> ' laboratory analysis, and determining groundwater flow direction at the site. Results of the <br /> ' laboratory analyses indicated low (background) concentrations of some priority metals in soil and <br /> groundwater samples, as well as low concentrations of bis-(2-ethylhexyl)phthalate in groundwater <br /> samples. <br /> ' In late 1994, the property was sold to Concord General Corporation. Concord Gerneral <br /> Corporation occupies the west half of the building and operates a kitchen and bath fixture <br /> ' manufacturing business as Bishop Industries. Olin Interconnect Technologies plans to lease the <br /> east half of the building only. <br /> 1 Greensfelder & Associates reported the groundwater flow direction to be to the south <br /> (Greensfelder, November 1994). The San Joaquin County Flood Control and Water <br /> Conservation District Spring 1994 Groundwater Report indicates that the groundwater flow <br /> ' direction in the vicinity of the site is to the north. <br /> ' N:\95136\REPORTS\O11N.WP 2 <br />