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I <br /> I <br /> Quarterly Report - Second Quarter 2003 <br />' MEL BOKIDES PETROLEUM, INC. <br /> 444 Mossdale Road, Lathrop, California <br />' 1.0. INTRODUCTION <br />' At the request of Mr Nick Bokides of Mel Bokides Petroleum Inc ,Advanced GeoEnvironmental, <br /> Inc (AGE)has prepared the enclosed report for the former Mel Bokides Petroleum facility located <br /> at 444 Mossdale Road, Lathrop, California (the site) The scope of work included gauging and <br />' sampling of the groundwater monitoring well network on the site and preparation of this report The <br /> site setting is illustrated on Figure 1 Site structures,previous borings and monitoring well locations <br /> are depicted on Figure 2 <br />' The field work was performed in accordance with Central Valley Regional Water Quality Control <br /> Board(CV-RWQCB)and San Joaquin County Environmental Health Department(EHD)guidelines <br />' for subsurface investigations of underground storage tank(UST)sites and ground water monitoring <br /> well sampling procedures, respectively The site history and a description of work previously <br /> performed at the site were presented in the AGE-prepared Preliminary Investigation and Evaluation <br />' Report(PIER), dated 01 March 2000 <br /> 2.0. PROCEDURES <br /> On 16 May 2003,ground water monitoring and sampling were performed at the site on wells MW-1 <br /> through MW-5, in addition, a ground water sample was collected from the domestic well on-site <br />' 2 1 WELL MONITORING AND EVACUATION <br /> A Solinst water level meter was used to measure the depth to ground water in monitoring wells <br /> MW-1 through MW-5 After depth to ground water measurements were obtained, approximately 7 <br /> to 7 75 gallons ofwater were removed from each well(a minimum of 3 casing-water volumes)using <br /> dedicated, disposable bailers Temperature, pH and conductivity of purged ground water were <br /> measured at 1-gallon intervals using an Oakton water analyzer The field data sheets are included <br /> in Appendix A I ' <br /> IPurged water was temporarily stored on-site in 55-gallon DOT-approved drums pendingproper <br /> disposal Following purging, the depth to ground water was measured to ensure that a minimum of <br /> 80%well-volume recharge had been achieved prior to sampling <br /> IAdvanced GeoEnvtronmentat,Inc <br />