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' RECENED <br /> ' uarterl <br /> Qort - First Quarter 26CA 2 1 2000 <br /> . Y Report <br /> Mel Bokides Petroleum, Inc. ENVIRONMENT HEALTH <br /> 501 W. Lodi Avenue, Lodi, California PERMIT/SERVICES <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 six 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. Field work was <br /> conducted and this report prepared in accordance with guidelines established by the Central Valley* <br /> Regional Water Quality Control Board(CVRWQCB)and by the San Joaquin County Public Health <br /> Services - Environmental Health Division (FHS-EHD) for subsurface investigations of former <br /> underground storage tank (UST) systems. <br /> ' A summa 'of previous investigations at the site was included in the Work Plan or Site Assessment <br /> � g .� , <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 04 February 2000 the depth to ground water in each monitoring well was measured to the nearest <br />' 0.01 foot utilizing a Solist water level meter.Groundwater elevations from BMW-1 through BMW-5 <br /> (site wells) and MW-5 (off-site well) 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 40 gallons(a minimum of three well volumes per <br />' well) of water were purged from wells BMW-I and BMW-2 and approximately 9 to 12 gallons of <br /> water were purged from the remaining wells 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 in Appendix A.Purged _y <br /> ground water was containerized in 55-gallon%drums and stored on=site. <br />' <br /> Advanced GeoEnvironmental,Inc. <br /> 1 <br />