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Chevron U.S.A. <br /> Page 2 <br /> Based on the findings and conclusions of the investigation, a plan for the <br /> remediation of soil was prepared by Dames &Moore. The plan, dated September 15, <br /> 1989,was approved by the San Joaquin County Environmental Health DMsion. <br /> Site activities,consisting of excavating hydrocarbon-contaminated soils <br /> associated with the soil remediation process, commenced on January 22, 1990. This <br /> activity continued through March 19, 1990. 'Those activities were reported in Dames & <br /> Moore's August 7, 1990 report. The aeration of contaminated soils commenced on <br /> March 20, 1990. The results of those activities are reported within this text. <br /> i - <br /> i� <br /> 3.0 PURPOSE AND SCOPE <br /> j The Purpose and Scope of our investigation was outlined in Dames&Moore's ; <br /> r_ <br /> Proposed Remedial Action PIan of September 15,1989,addressed to Chevron U.S.A. The " <br /> plan was modified in an addendum to the plan dated January 8, 1990. The purpose of <br /> the remedial action was to reduce the potential for further migration of contamination <br /> found in site soils. <br /> This portion of the remedial action plan was to aerate hydrocarbon-contaminated <br /> soils to a"non-detected"level and replace those materials as compacted engineered <br /> fill within the excavation at the subject site. <br /> - is000-zso-o++ <br /> NJOORE <br />