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' Quarterly Report - Second Quarter 2002 <br /> • Y P <br /> GEWEKE LAND DEVELOPMENT & MARKETING <br />' 16 South Cherokee Lane, Lodi, California <br /> i <br /> I t <br /> 1.0. INTRODUCTION AND SCOPE OF WORK <br /> At the request of Gewcke Land Development & Marketing (GLDM), and, In accordance with <br />' Cleanup and Abatement Order No 93-701,Advanced GeoEnvlronmental,Inc (AGE)has prepared <br /> this report of field activities performed at 16 South Cherokee Lane, Lodi, California during the <br />' second quarter of 2002 The site and its surroundings are illustrated on Figure 1 Monitoring well <br /> and boring locations related to the site are shown on Figures 1 and 2 <br />' The scope of work covered by this report includes one quarterly ground water monitoring event <br /> Results of previous investigations are detailed in the Problem Assessment Report (PAR), the <br /> Quarterly Report-March 1996 and the Quarterly Report-March and June 1999 Analytical results <br />' for ground water samples from previous monitoring events are included in Table 3 of this report <br />' 2.0. PROCEDURES <br /> Quarterly ground water monitoring was performed on 07 June 2002 Field work was performed in <br /> Iaccordance with San Joaquin County Environmental Health Department (EHD) guidelines for <br /> sampling ground water monitoring wells and Central Valley Regional Water Quality Control Board <br /> (CVRWQCB) guidelines for investigations of underground storage tank (UST) sites <br />' 2 1 WELL MONITORING AND EVACUATION <br /> In accordance with the Revised Monitoring and Reporting Program, dated 27 June 2001, fifteen <br />' wells were monitored and five wells were sampled on 07 June 2002 A Solinst water level meter was <br /> used to measure the depth to ground water In fifteen wells relative to the tops of the well casings <br /> (Table 1) After depth measurements, wells MW-7, MW-8, MW-9, MW-12 and,MW-14 were <br />' purged using new disposable plastic bailers Approximately 6 0 to 9 0 gallons of water(a minimum <br /> of 3 casing-water volumes per well) were removed from each of the wells <br />' Temperature, pH and conductivity of the purge water were measured at regular purge-volume <br /> intervals using an Oakton water analyzer and the readings were recorded on field logs Field data and <br /> work sheets are included in Appendix A The purged water was containenzed in 55-gallon <br />' Department of Transportation (DOT)-approved drums and stored on-site <br /> IAdvanced GeoEnvironmental,Inc <br />