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ii ► <br /> Chevron#9-0557 v June 2013 <br /> 139 Center Street South, Stockton <br /> Claim'No: 5820 <br /> 11 YES, check applicable scenarios: ❑ 1 ❑ 2 m 3 ❑ 4 <br /> b. Has a site-specific risk assessment for the vapor intrusion pathway ❑ Yes ❑ No o NA <br /> been conducted and demonstrates that human health is protected to <br /> the satisfaction of the regulatory agency. <br /> c. As a result of controlling exposure through the use of mitigation ❑ Yes ❑ No o NA <br /> measures or through the use of institutional or engineering <br /> controls, has the regulatory agency determined that petroleum <br /> vapors;migrating from soil or groundwater will have no significant <br /> risk of adversely affecting human health? <br /> 3. Direct Contact and Outdoor Air Exposure:, <br /> The Site is considered low-threat for direct contact and outdoor air exposure <br /> if site-specific conditions satisfy one of the three classes of sites (a through <br /> c). <br /> a. Are maximum concentrations of petroleum constituents in soil less ❑ Yes ❑ No 91 NA <br /> than or equal to those listed in Table 1 for the specified depth below <br /> ,ground surface (bgs)? <br /> b. Are maximum concentrations of petroleum constituents in soil less o Yes ❑ No ❑ NA <br /> than levels that a site specific risk assessment demonstrates will <br /> have no significant risk of adversely affecting human health? <br /> c. As a result of controlling exposure through the use of mitigation ❑ Yes ❑ No o NA <br /> measures or through the use of institutional or engineering <br /> controls, has the regulatory agency determined that the <br /> concentrations of petroleum constituents in soil will have no <br /> significant risk of adversely affecting human health? <br /> Page 6 of 11 <br />