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1 <br /> QuarterlyRe August 1998 <br /> Report - <br /> Mel Bokides Petroleum,Inc <br /> 501 W. Lodi Avenue <br /> Lodi, California <br /> 1.0. INTRODUCTION <br /> At the request of Mr Nicholas Bokides of Mel Bokides Petroleum, Inc , Advanced <br /> GeoEnvironmental, Inc (AGE)has prepared this Quarterly Report for 501 W Lodi Avenue (site), <br />' Lodi, California The site setting is illustrated on Figure 1 Site structures and monitoring well <br /> locations are depicted on Figure 2 <br />' The scope of work was to monitor and sample three ground water monitoring wells on the site The <br /> 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 <br /> This report is prepared in accordance with guidelines established by the Central Valley y Regional <br /> Water Quality Control Board(CVRWQCB)and by the San Joaquin County Public Health Services- <br /> Environmental Health Division (PHS-EHD) related the subsurface investigation of the former <br /> underground storage tank (UST) system on the site <br /> A summary of previous investigations at the site was included in the Work Plan far Site Assessment, <br /> Mel Bokides Petroleum, 501 West Lodi Avenue, Lodi, California, dated 15 May 1998,prepared by <br />' AGE <br />' 2.0. PROCEDURES <br /> 2 1 MONITORING WELL PURGE PROCEDURES <br />' On 19 August 1998, the depth to ground water in each monitoring well was measured to the nearest <br /> p g <br /> 0 01 foot utilizing a Solist water level meter Ground water elevations from BMW-1, BMW-2 (site <br />' wells) MW-3 and MW-5 (off-site wells)were then calculated by subtracting the measured depth to <br /> ground water from the surveyed casing elevations (Table 1) Ground water elevations were plotted <br /> and contoured on a scaled site map(Figure 3) <br /> After water levels were measured, approximately 36 gallons(a minimum of three well volumes per <br />' well)of water were purged from wells BMW-1 and BMW-2,and approximately 10 gallons of water _ <br /> were purged fr6m wells MW-3 and MW-5 utilizing a two-stage submersible pump An ICM Model <br /> 52200 water analyzer was utilized to monitor temperature,pH and conductivity of purged water at <br />' regular purge-volume intervals Stabilization data and field logs are included with Appendix A <br /> Purged ground water was containerized in 55-gallon drums and stored on-site <br /> Advanced GeoEnvironmentai,inc. <br /> 1 <br />