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• ,368 • THE IM BOND EXPENDITURE PLAN • <br /> COST RECOVERY/OPERATION AND MAINTENANCE_ SITE <br /> LIKA - FIELD AVENUE MAY 6 1991 <br /> ENVIRONMENTAL HEALTH <br /> prngMlT'�Ci'') .I(�rpp <br /> Site Information November, 1984. The responsible party conducted <br /> investigations at the site to determine the extent of <br /> Location and Type of Site contamination in October, 1985 and February, 1986. A <br /> 1856 Feld Avenue feasibility study was delivered to DHS in August, 1986. <br /> Stockton, CA 95206 An IRM for soil excavation and removal was completed <br /> San Joaquin in May, 1987. The final RAP was completed in <br /> February, 1988. The site was certified as clean on <br /> LIKA Corporation manufactured circuit boards at this Apri128, 1988. An enforceable agreement was adopted <br /> annex from 1982 to 1985. The majority of these boards April, 1988 for two years of quarterly ground water <br /> were then sent to the old facility located on Navy Drive monitoring. Monitoring is scheduled for copper, lead, <br /> for further plating and finishing. The remaining boards nickel, chromium, pH and depth-to-ground water from <br /> were used to produce multilayering. In multilayering, a one upgradient and two downgradient wells. <br /> resistant compound for selective plating is applied to the <br /> boards and photodeveloped using a caustic soda solution Projected Revenue Sources <br /> which drains to a concrete sump. The resistant treated lika Corporation — Responsible Party <br /> plates are then etched,copperplated and treated for the 1443 Navy Drive <br /> layering process. The caustic stripper and the rinse Stockton, CA 95206 <br /> waters from the process also drain to the aforementioned <br /> sump, which is connected to the sanitary sewer. Tandy Corporation — Parent Company <br /> 1900 Taylor Street <br /> Description of Hazardous Wastes Fort Worth, TX 76102 <br /> Copper was confirmed as a soil and ground water <br /> contaminant at the site prior to remediation. Past acid The San Joaquin County D.A has negotiated an <br /> leakage reduced the alkaline nature of site soils. enforceable order with the responsible party. The <br /> Department will recover 100 percent of direct costs plus <br /> Threat to Public Health and Eavironment staff costs and overhead related to oversight of the RP's <br /> Soil was contaminated with copper and lead. No threat remediation activities. The responsible party paid costs <br /> g. to public health exists now. Four hundred forty eight associated with site cleanup. <br /> (448) cubic feet of soil contaminated with copper and <br /> lead above the cleanup level of 35 and 10 parts per <br /> million respectively were excavated and removed to a Cost Recovery/Operation & Maintenance Information <br /> Class I landfill. Subsequent sampling at the site, after <br /> j, the soil excavation, showed that the ground water was All major cleanup phases have been completed at this <br /> not contaminated. site. DHS is currently in the cost recovery phase which <br /> is projected to be completed by June, 1989. In <br /> addition, ground water monitoring will continue <br /> Site Status quarterly for two years. <br /> Status of Site Activity <br /> The Department inspected and sampled this site in <br /> Robb Welch <br /> f STAFF - lrll,r <br /> i <br /> �AeEnV/ menrel/Englbeer ng COn9Yltanm <br /> 14061747-1414 FAX(4661745-1069 <br /> 1220CrossmanAvenue.Suite 206 • Sunnyvale.Califomla 94609 <br />