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1 t x T <br />' Quarterly Report - First Quarter 2003 <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 />' The objective of the work was to monitor dissolved petroleum hydrocarbon concentrations in ground <br /> water and to characterize ground water flow direction and gradient on the site This report has been <br /> prepared in accordance with guidelines issued by the Califorma Regional Water Quality Control <br />' Board(RWQCB)-Central Valley Region for investigation of underground storage tank(UST)sites <br /> 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 /> 1 <br /> 2.0. PROCEDURES <br />' On 04 March 2003, ground water 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 Preliminary 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 /> I <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 />' After water levels were measured, approximately 6 gallons of ground water (a minimum of three <br /> casing-water volumes per well)were evacuated(purged)from wells MW-I through MW-4 utilizing <br />' a Watera hydro-lift pump Temperature, pH and conductivity were measured for stabilization at <br /> 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 /> Advanced GeoEnvironmental,Inc <br />