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ei <br /> Q / 3164 Gold Camp Drive <br /> Delta _ JI IIrS �?J�IJI Suite 200 <br /> Rancho Cordova.CA 95670 <br /> Environmental AUG 18 1995 916/638-2085 <br /> Consultants,Inc. FAX 916/638-8385 <br /> August 18, 1995 ENVIRONMENTAL HEALTH . <br /> PERMIT/SERVICES <br /> Subject: Corrective Action Plan Executive Summary <br /> Unocal Service Station No. 5886 <br /> 2701 W. March Lane <br /> Stockton, California 95201 <br /> Delta Project No. D095-W <br /> In July 1995, Unocal began remodeling of service station No. 5886, located at 2701 W. March Lane, <br /> Stockton, California. Activities at the site included the removal of the station building, station <br /> canopy, product lines and dispensers, and the overlying concrete and asphalt cover. During removal v <br /> of the lines and dispensers, soil samples were collected to assess the possible presence of petroleum <br /> hydrocarbons in soil. Soil samples were submitted to a California certified laboratory for chemical { <br /> analyses. Analytical results from the laboratory reported concentrations of total petroleum <br /> hydrocarbons quantified as gasoline and diesel and benzene, toluene, ethylbenzene, and total xylenes <br /> above the laboratory's limits of detection. <br /> Upon approval from the San Joaquin County Environmental Health Division, Unocal proposes to <br /> install a minimum of 10 Geoprobe sampling points on-site to assess the lateral and vertical extent of <br /> hydrocarbons in soil in the area of the former dispenser islands and product piping. Concurrent with <br /> the soil sampling, ground water samples will be collected and analyzed to assess if ground water has <br /> been impacted and to what extent. Based on the results of the proposed investigation, additional <br /> investigation/remediation work as necessary will be proposed and performed upon authorization from J <br /> the San Joaquin County Environmental Health Division. Any required work will be performed <br /> concurrently with and after completion of the new station. <br /> • I <br /> I <br /> f <br /> Providing a Competitive Edge <br /> i <br />