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I <br /> 1 <br /> Ground Water Monitoring Report - Second Quarter 2001 <br />' TRACY MARINE SALES <br /> 2353 Toste Road, Tracy, California <br /> I1.0. INTRODUCTION <br />' At the request of Mr Joe Toste Jr , Advanced GeoEnvironmental, Inc (AGE) has prepared this <br /> quarterly report for the property located at 2353 Toste Road, Tracy, California The site and the <br /> surrounding area are illustrated in Figure 1 On-site structures,boring locations and monitoring well <br />' locations are illustrated on Figure 2 <br /> Eleven ground water monitonng wells were purged and sampled in June 2001 Field work was <br /> performed in accordance with San Joaquin County Public Health Services - Environmental Health <br /> Division(PHS-EHD)-approved Additional Site Assessment Work Plan, dated 26 September 2000 <br />' 2.0. PROCEDURES <br /> IThis report is prepared in accordance with Central Valley Regional Water Quality Control Board <br /> (CVRWQCB) and PHS-EHD guidelines for investigation of underground storage tank (UST) sites <br /> . and sampling ground water monitoring wells Background information is summarized in the <br /> AGE-prepared report titled Additional Site Assessment Work Plan, dated 26 September 2000 <br /> 2 1 MONITORING WELL PURGE PROCEDURES <br /> On 29 June 2001, a Solinst water level meter was used to measure the depth to ground water in <br /> eleven wells relative to the tops of the well casings The ground water elevations and gradient were <br /> determined from these data (Table 1) <br /> After recording water level measurements, a two-stage submersible pump was used to purge <br /> monitoring well MW6 of standing water A disposable plastic bailer was used to purge the remaining <br /> wells of standing water Approximately 6 gallons of water (a minimum of 3 casing-water volumes) <br /> were removed from wells MWI, MW2, MW3, MW4, MW5, MW7, MW9, MW10 and MW11 <br /> Monitoring well MW6 was purged of approximately 12 gallons of water and approximately 2 5 <br /> gallons of water were removed from well MW8 before the well was pumped dry Ground water <br /> temperature,pH and conductivity were measured at regular intervals during purging using an Oakton <br /> and a Hydac water analyzer Field sheets and data are included in Appendix A Purged water was <br />' stored on-site in labeled, 55-gallon DOT-approved drums <br /> • <br />