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Ground Water Monitoring Report - Third Quarter 2000 <br /> TRACY MARINE SALES <br /> 2353 Toste Road, Tracy, California <br /> 1.0. INTRODUCTION <br /> I 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 I On-site structures,boring locations and monitoring well <br /> Ilocations are Illustrated on Figure 2 <br /> Eight ground water monitoring wells were purged and sampled on 08 September 2000 Field work <br /> was performed in accordance with PHS-EHD approved Site Assessment WorkPlan Addendum,dated <br /> 28 July 1999 <br /> IThe quarterly report is prepared in accordance with San Joaquin County Public Health Services - <br /> Environmental Health Division (PHS-EHD) and Central Valley Regional Water Quality Control <br /> Board (CVRWQCB) guidelines for the investigation of underground storage tank (UST) sites <br /> Background information is summarized in the AGE report titled Preliminary Investigation and <br /> Evaluation Report, dated 30 March 1999 <br /> I � <br /> 2.0. PROCEDURES <br /> 21 MONITORING WELL PURGE PROCEDURES <br /> For this sampling event, a Sohnst water level meter was used to measure the depth to ground water <br /> in eight wells relative to the tops of the well casings The ground water elevations and gradient were <br /> determined from these data (Table 1) <br /> IAfter recording water level measurements, a disposable bailer was used to purge each monitoring <br /> well, with the exception of MW-6 of standing water Approximately 6 to 8 gallons of water <br /> I (minimum of 3 water volumes from submerged casing)were removed from wells MW-1,MW-3 and <br /> MW-7 Monitoring well MW-6 was purged of approximately 15 gallons of water utilizing a <br /> submersible pump Approximately 2 5 to 5 gallons of water were removed from wells MW-2, <br /> MW-4, MW-5 and MW-8 before they were bailed dry Ground water temperature, pH and <br /> conductivity were measured at regular intervals during purging using a Hydac water analyzer Field <br /> I sheets and data are included in Appendix A Purged water was stored on-site in labeled, 55-gallon <br /> DOT-approved drums <br /> I2 2 COLLECTION AND ANALYSIS OF GROUND WATER SAMPLES <br /> Water samples were collected from each purged well using new disposable plastic bailers Each <br /> Advanced GeoEnvaronmental,Inc <br />