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5.0 FEASIBILITY STUDY AND CORRECTIVE ACTION PLAN <br /> 5.1 PROPOSED INTERIM SITE CLEANUP GOALS <br /> Cleanup goals are typically based on one or more of the following criteria: <br /> • California Department of Health Services primary or secondary maximum <br /> contaminant levels for drinking water; <br /> • ESLs established by the SFBRWQCB; <br /> • Risk-based cleanup levels established by risk assessment or risk-based corrective <br /> action analysis; <br /> • Current closure guidelines from the regulatory agencies, such as the State Water <br /> Board criteria for low-risk groundwater cases; <br /> • Application of Best Available Technology based on remediation system operation <br /> data that demonstrate asymptotic levels have been achieved for chemical <br /> concentrations in soil and/or groundwater; <br /> • Background concentrations of individual pollutants; and/or <br /> • Technologic and economic feasibility. <br /> The objectives are to implement the most effective approach to remediate groundwater <br /> beneath the site and to protect sensitive receptors and human health. <br /> As discussed above, shallow groundwater in the vicinity of the terminal is not <br /> considered a source of drinking water. Therefore, we are proposing that non-drinking <br /> water ESLs (from Table B of the ESL document) be used as interim cleanup goals <br /> pending completion of a site specific risk assessment. <br /> 241729(33) 10 CONESTOGA-ROVERS&ASSOCIATES <br />