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t � <br /> Frank C. Alegre Trucking, Inc. <br /> Lodi, California <br /> January 25, 1991 <br /> i <br /> 6. ENVIRONMENTAL T b RiSB ASSESSMENT <br /> i <br /> Risk assessment is a logical',�analytical approach. <br /> to evaluate and estimate the probable health effects or <br /> adverse environmental impacts of a particular contaminated <br /> site, the mitigation technologies, cost effectiveness and <br /> public perception. If the risk is considered not <br /> significant, a no action alternative is practicable. If the' <br /> risk is considered significant, remedial alternatives are <br /> selected which are technically feasible to eliminate the <br /> contaminant to a nonsignificant risk. !Risk assessment is <br /> used to evaluate alternative strategies and to select that <br /> approach which achieves the optimum balance between <br /> reduction of risk, implementation costs, and other factors <br /> of concern in the specific project situation. <br /> Ground water was found at a depth of +45' . The <br /> data shows that a threat to ground water does not presently <br /> exist. With the removal of the source'aand excavation of <br /> contaminated soils at the site, the migration of the <br /> contaminate has been eliminated. The environmental risk to <br /> human health and safety is nonsignificant. No further <br /> investigation is recommended at this time. <br /> I <br /> k <br /> 1 k <br /> I <br /> i <br /> s <br /> i <br /> GeoPlus Consulting Services <br /> Page - 16 <br /> f ; <br />