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i <br /> s <br />' • Ground Water Monitoring Report - Second Quarter 2001 <br />' Geweke Land Development& Marketing <br /> 16 South Cherokee Lane, Lodi, California <br /> 1.0. INTRODUCTION AND SCOPE OF WORK <br />' At the request of Geweke Land Development & Marketing (GLDM), and in accordance with <br /> Cleanup and Abatement Order No 93-701,Advanced GeoEnvironmental, Inc (AGE) has prepared <br /> this report of field activities performed at 16 South Cherokee Lane, Lodi, California during the <br />' second quarter of 2001 The site and its surroundings are illustrated on Figure 1 Structures and well <br /> locations related to the site are shown on Figure 2 <br /> The scope of work covered by flus 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 />' from previous monitoring events are included in Table 3 of this report <br />' 2.0 PROCEDURES <br />' Quarterly ground water monitoring was performed on 28 June 2001 Field work was performed in <br /> accordance with San Joaquin County Public Health Services - Environmental Health Division <br /> (PHS-EHD) guidelines for sampling monitoring wells and Central Valley Regional Water Quality <br />' Control Board (CVRWQCB) guidelines for the investigation of underground storage tank (UST) <br /> sites <br /> I2 1 MONITORING WELL PURGE PROCEDURES <br />' In accordance with the Revised Monitoring and Reporting Program, dated 27 June 2001, fifteen <br /> wells were monitored and five wells were sampled during the second quarter 2001 On 28 June 2001, <br /> a Solinst water level meter was used to measure the depth to ground water in fifteen wells relative <br /> I to the tops of the well casings'(Table 1) Wells MW-7, MW-8, MW-9, MW-12 and MW-14 were <br /> purged using new disposable plastic bailers Approximately 8 to 10 gallons of water (a minimum of <br /> 3 casing-water volumes per well) were removed from each of the wells sampled <br />' Temperature, pH and conductivity of the purge water were measured at regular purge-volume <br /> intervals using a Hydac 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 contairienzed in 55-gallon <br /> DOT-approved drums and stored on-site <br /> 1 <br /> Advanced GeoEnvironmental,Inc <br />�� x <br />