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IGround Water Monitoring Report - Fourth Quarter 2001 <br /> • PLAZA LIQUORS 11 <br /> 2420 West Turner Road, Lodi, California <br /> 1.0. INTRODUCTION <br /> At the request of Mr Robert McCarty,Advanced GeoEnvironmental, Inc (AGE)has prepared this <br /> quarterly report for the property located at 2420 West Turner Road, Lodi, California The site and <br /> the surrounding area are illustrated in Figure 1 On-site structures and monitoring well locations are <br /> I illustrated on Figure 2 Background information and groundwater monitoring procedures for the site <br /> are summarized in AGE's work pian titled Preliminary Site Assessment Work Plan, dated <br /> 19 November 1999 The objective of the work was to monitor dissolved petroleum hydrocarbon <br /> I concentrations in ground water and to characterize ground water flow direction and gradient on the <br /> site <br /> 2.0. PROCEDURES <br /> I Field work was conducted and this report was prepared in accordance with guidelines issued by the <br /> Central Valley Region of the Regional Water Quality Control Board (CVRWQCB) for subsurface <br /> investigation of underground storage tank(UST)sites and guidelines issued by San Joaquin County <br />' Public Health Services - Environmental Health Division (PHS-EHD) for sampling ground water <br /> monitoring wells <br /> I2 1 MONITORING WELL PURGE PROCEDURES <br /> On 19 October 2001, ground water monitoring and sampling event was performed on wells MW 1 <br /> through MW4 Prior to sampling,the depth to ground water was measured from the top of each well <br /> casing to the nearest 0 01-foot utilizing a Solmst water level meter Ground water elevation In each <br /> well was calculated by subtracting the measured depth to ground water from the surveyed casing <br /> elevation (Table 1) <br /> IAfter water levels were gauged, a disposable plastic bailer was used to purge each monitoring well <br /> of standing water Approximately 6 5 to S 0 gallons ofwater(a minimum of casing-water volumes) <br /> I were removed from each well Ground water temperature, pH and conductivity were measured at <br /> regular intervals during purging using an Oakton water analyzer Field sheets and data are included <br /> in Appendix A Purged water was stored on-site in labeled, 55-gallon DOT-approved drums <br /> I <br /> 22 COLLECTION OF GROUND WATER SAMPLES <br /> IWater samples were collected from each purged well using new disposable plastic bailers Each <br /> . water sample was transferred into one 1-liter amber bottle without sample preservative and into three <br /> IAdvanced GeoEnviron mental,Inc <br /> I <br />