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6 0 EVALUATION OF REMEDIAL OPTIONS <br /> This section presents the evaluation of the nine remedial options Included are <br /> development of the evaluation approach and decision criteria, cost estimates for remedial <br /> options, economic analyses, the final evaluation of both cost and non-cost criteria, and discussion <br /> of the preferred remedial option <br /> 6 1 EVALUATION APPROACH AND DECISION CRITERIA <br /> As for a CERCLA feasibility study, the overall approach for selection of a preferred <br /> remedial option for the AFPC site includes development of remedial options, identification of <br /> decision criteria, ranking or rating of the options for each of the decision criteria, and final <br /> selection of the preferred alternative Ideally, selection of the preferred alternative would be <br /> based on a completely objective and quantifiable evaluation However, because non-cost criteria <br /> and other non-quantifiable factors are important considerations, a semi-quantitative approach is <br /> used The following decision criteria are considered during selection of the preferred remedial <br /> option <br /> • Effectiveness includes consideration of overall ability to meet the objectives of <br /> environmental cleanup reduction of contaminant mass, mobility, and toxicity, <br /> isolation of receptors from the contaminants, and impacts to existing and future <br /> beneficial land use <br /> • Reliability refers to the permanence of the remedy The potential for future <br /> groundwater impacts, long term protection of human health, and long term <br /> protection of other receptors are all factors affecting reliability of the option <br /> • Impleinentability includes two important factors technical feasibility and <br /> administrative feasibility Technical feasibility refers to the ability to obtain the <br /> necessary goods and services to complete remedial action, and also includes <br /> consideration of whether the technologies involved are proven to be capable of <br /> achieving the stated remedial goal Administrative feasibility refers to the ability <br /> to obtain regulatory agency approval and necessary permits to implement the <br /> option For the AFPC site, regulatory agency approval refers primarily to the <br /> PHS/EHD and the RWQCB <br /> • Safety is also an important consideration Potential health threats to remediation <br /> workers, workers employed by AFPC, and the general public during remedial <br /> action are considered <br /> SAC 127 10 21 <br /> DAMES & MOORE <br />