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1 ' <br />' Quarterly Report - First Quarter 2002 <br /> i <br /> FLAME MINI-MART <br />' 1301 West Kettleman Lane <br /> Lodi, California <br /> 1.0. INTRODUCTION <br /> Advanced GeoEnvironmental, Inc (AGE) has prepared this quarterly report for 1301 West <br /> Kettleman Lane (the site), Lodi, California The scope of work included conducting a quarterly <br />' ground water monitoring event and preparation of this report The site setting is illustrated in <br /> Figure 1 Site structures and monitoring well Iocations are depicted in Figure 2 <br />' This report has been prepared in accordance with guidelines issued by the California Regional Water <br /> Quality Control Board-Central Valley Region for investigation of underground storage tank(UST) <br /> sites Site history and findings from previous investigations at the site are summarized in the AGE- <br /> prepared Preliminary Site Assessment Work Plan, dated 30 June 1999 <br />' 2 0. PROCEDURES <br /> . On 10 March 2002, ground water monitoring was performed at the site on wells MW-1 through <br /> MW-4,ground water sampling was performed at wells MW-1,MW-2 and MW-3 Monitoring well <br /> construction details are summarized in Table 1 Ground water monitoring procedures for the site <br /> were outlined in Preliminary Site Assessment Work Plan, dated 30 June 1999,prepared by AGE and <br />' approved by the San Joaquin County Environmental Health Department (SJCEHD)by letter dated <br /> 07 July 1999 At the direction of the SJCEHD, only a depth to ground water measurement was <br />' recorded for MW-4, which is sampled semi-annually <br />' 2 1 WELL MONITORING AND EVACUATION <br /> Depth to ground water was measured in each well from the top of the well casing to the nearest <br />' 0 01-foot utilizing a Solinst water level meter The ground water elevation in each well was <br /> calculated by subtracting the measured depth to ground water from the surveyed casing elevation <br /> (Table 2) Ground water elevations were plotted and contoured on a scaled site map (Figure 3) <br /> tAfter water levels were measured, approximately 7 to 7%2 gallons of ground water (a minimum of <br /> three casing-water volumes per well)were evacuated(purged)from wells MW-1,MW-2 and MW-3 <br />' utilizing polyethylene disposable bailers Temperature, pH and conductivity were measured for <br /> stabilization at regular purge-volume intervals from each well using an Oakton water analyzer Field <br /> data and logs are included with Appendix A Purged ground water was containerized in 55-gallon <br /> drums and was stored on-site in an area lacking general public access <br /> • <br /> Advanced GeoEnvironmental,Inc <br /> f <br />