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' • Quarterly Report - Fourth Quarter 2002 <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 locations 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(RWQCB)-Central Valley Region for investigation of underground storage <br /> tank(UST) sites Site history and findings from previous investigations at the site are summarized <br /> Iin the AGE-prepared Preliminary Site Assessment Work Plan, dated 30 June 1999 <br />' 2.0. PROCEDURES <br /> • On 29 November 2002, groundwater monitoring was performed at the site on wells MW-1 through <br />' MW-4 Monitoring well construction details are summarized in Table 1 Ground water monitoring <br /> procedures for the site were outlined in Prehmtnary Site Assessment Work Plan, dated 30 June 1999, <br /> prepared by AGE and approved by the San Joaquin County Environmental Health Department <br /> (SJCEHD) by letter dated 07 July 1999 <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 Sohnst 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 /> After water levels were measured,approximately 5 to 6 gallons of ground water(a mimmum of three <br /> I casing-water volumes per well)were evacuated(purged)from wells MW-1 through MW-4 utilizing <br /> polyethylene disposable bailers Temperature,pH and conductivity were measured for stabilization <br /> at regular purge-volume intervals from each well using an Oakton water analyzer Field data and logs <br /> are included with Appendix A Purged ground water was containerized in 55-gallon drums and was <br /> stored on-site in an area lacking general public access <br /> r <br /> • <br /> " Advanced GeoEnvi ron mental,Inc <br /> I <br />