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SSite Assessment Report - Fourth Quarter 2002 <br /> FLAG CITY CHEVRON <br /> 6421 Capitol Avenue, Lodi, California <br /> 1.0. INTRODUCTION AND SCOPE OF WORK <br /> At the request of Mr Richard Bokides of Bokides Family Limited Partnership, Advanced <br /> GeoEnvironmental,Inc (AGE)has prepared this site assessement report of findings for 6421 Capitol <br /> Avenue (the site), Lodi, California The report documents procedures and results for Geoprobe <br /> ground water testing utilizing "direct push" technology and conducted at the site during October <br /> 2002(Fourth Quarter 2002) The site setting is illustrated on Figure 1 Site structures and monitoring <br /> well locations are depicted on Figure 2 <br /> The objective of this fourth quarter2002 site investigation was to further assess the MTBE-impacted <br /> ground water first detected at ground water monitoring well MW-8A during the first quarter ground <br /> water monitoring event in March 2002 The following is a chronology of the fourth quarter 2002 <br /> Geoprobe site assessment activities <br /> 0 03 October 2002 -Advancement of Geoprobe soil bonng(P-37)to a depth of 50 feet below <br /> surface grade (bsg), collect grab water samples at selected depths <br /> c 30 October 2002 - Advancement of Geoprobe soil bonngs (P-36 and P-38) to depths of 50 <br /> feet bsg, collect grab water samples at selected depths <br /> This report has been prepared in accordance with guidelines issued by the California Regional Water <br /> Quality Control Board-Central ValleyDivision(RWQCB)for investigation ofunderground storage <br /> tank (UST) sites A summary of previous investigations at the site was included in Work Plan <br /> Addendum -November 2000, dated 27 November 2000, prepared by AGE <br /> 2.0. PROCEDURES <br /> On 03 and 30 October 2002,three soil probe borings(P-36, P-37 and P-38)were advanced on-and <br /> off-site as part of site assessment activities related to MTBE-impacted ground water detected at <br /> MW-8A The field work was conducted as outlined in the RWQCB-approved work plan dated 09 <br /> May 2002 <br /> 21 GEOPROBE SOIL BORINGS <br /> Soil probe bonngs P-36,P-37 and P-38 were advanced vertically to a maximum depth of 50 feet bsg <br /> The probe bonngs were advanced utilizing a van-mounted Geoprobe 5400 equipped with 1 125-inch <br /> diameter probe rods using "direct push" technology Soil probe borings locations are depicted in <br /> Figure 2 <br /> Advanced GeoEnvlronmental,Inc <br />