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r <br /> IQuarterly Report - First Quarter 2006 <br /> • FLAME MINI-MART <br />' 1301 West Kettleman Lane, Lodi, California <br />' 1.0. INTRODUCTION <br /> On behalf of Mr Pete Graffigna,Advanced GeoEnvironmental,Inc (AGE)has prepared this quarterly <br />' report for Flame Mini-Mart, 1301 West Kettleman Lane (the site), Lodi, California The scope of <br /> work included conducting a quarterly ground water monitoring event and preparation of this report <br /> The objective of the work was to assess, characterize and monitor dissolved petroleum hydrocarbon <br />' concentrations in ground water and to calculate ground water flow direction and gradient on-site The <br /> site setting is illustrated on Figure 1 Site structures and monitoring well locations are depicted on <br />' Figure 2 <br /> This report has been prepared in accordance with guidelines issued by the Central Valley Regional <br /> Water Quality Control Board (CVRWQCB) for investigation of underground storage tank (UST) <br />' sites A summary of previous investigation at the site is included in Appendix A Ground water <br /> monitoring data acquired to date is included in the tables of this report <br /> I <br /> 2.0. PROCEDURES <br />'. Eight monitoring wells (MW-I through MW-8)were monitored, purged and sampled on 22 March <br /> 2006 Field work was performed in accordance with San Joaquin County Environmental Health <br />' Department (EHD) guidelines for sampling ground water monitoring wells and CVRWQCB <br /> guidelines for the investigation of UST sites <br />' 21 WELL MONITORING AND PURGE PROCEDURES <br /> IOn 22 March 2006 the depth to ground water in wells MW-1 through MW-8 were measured from the <br /> top of each well casing to the nearest 0 01-foot utilizing a Solinst water level meter, ground water <br /> elevations for each well were calculated by subtracting the measured depth to ground water from the <br />' surveyed casing elevation.(Table 1) After water levels were measured,approximately 5%z to 7 gallons <br /> of water(a minimum of 3 casing-water volumes per well)were purged from monitoring wells MW-I <br />' through MW-6, MW-8 and approximately 18'/z gallons of water were removed from well MW-7 <br /> using a Watera hydrolift pump and dedicated tubing Ground water temperature,pH and conductivity <br /> were measured at regular intervals during purging using an Oakton water analyzer Field sheets and <br /> I data are included in Appendix B Purged water was stored in properly labeled Department of <br /> Transportation (DOT)-approved 55-gallon drums and stored on-site <br /> I <br />' • <br /> Advanced CcoEnvironmentai,Inc <br /> I <br />