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I• Ground Water Monrtor�ng Report - Third Quarter 2001 <br /> TRACY MARINE SALES <br /> 2353 Toste Road, Tracy, California <br /> 1.0. 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 Taste 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 groundwater monitoring wells were purged and sampled in September 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 /> I <br /> 2.0. PROCEDURES <br />' This report is prepared in accordance with Central Valley Regional Water Quality Control Board <br /> (CVRWQCB)guidelines for investigation of underground storage tank(UST) sites The field work <br /> liewas conducted in accordance with PHS-EHD guidelines for sampling ground water monitoring <br /> wells Background information is summarized in the AGE-prepared report titled Additional Site <br /> Assessment Work Plan, dated 26 September 2000 <br /> 2 1 MONI'T'ORING WELL PURGE PROCEDURES <br /> On 27 September 2001, a Solinst water level meter was used to measure the depth to ground water <br /> in eleven wells relative to the tops of the well casings The ground water elevations and gradient <br /> were determined from these data (Table 1) <br /> After recording water level measurements, a disposable plastic bailer was used to purge the wells <br />' of standing water Approximately 5 to 7 gallons of water(a minimum of 3 casing-water volumes per <br /> well) were removed from wells MWI, MW3, MW7, MW9, MW10 and MW11 Monitoring well <br /> MW6 was purged of approximately 14 gallons of water and approximately 2 to 5 gallons of water <br /> Iwere removed from wells MW2,MW4,MW5 and MW8 before the wells were pumped dry Ground <br /> water temperature,pH and conductivity were measured at regular intervals during purging using an <br /> ICM water analyzer Field sheets and data are included in Appendix A Purged water was stored on- <br /> site in labeled, 55-gallon DOT-approved drums <br />