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1 <br /> • Quarterly Report w Second Quarter 2002 <br /> FRANKLYN COLE PROPERTY <br /> 7505 West Linne Road, Tracy, California <br /> 1 <br /> 1.0. INTRODUCTION AND SCOPE OF WORK <br /> At the request of Mr. Franklyn Cole, Advanced GeoEnvironmental, Inc. (AGE) has prepared this <br /> report for 7505 West Linne Road,Tracy, California(the site). This report documents procedures and <br /> ' results for a quarterly ground water monitoring event conducted during the second quarter 2002. <br /> The location and vicinity of the site are illustrated on Figure 1. The locations of on-site structures, <br /> borings, wells and the former UST and dispenser are depicted on Figure 2. <br /> rThis report has been prepared in accordance with the Central Valley Regional Water Quality Control <br /> Board (CVRWQCB) guidelines for the investigation of underground storage tank (UST) sites. <br /> ' Background information and a summary of prior investigations at the site are included in the <br /> AGE-prepared WorkPlan-April 1999, dated 23 April 1999. Quarterly monitoring data from August <br /> 1999 to the present is summarized in Tables 1 and 2 of this report. <br /> . 2.0. PROCEDURES <br /> ' Monitoring wells MW-1 through MW-6 were monitored and sampled on 17 June 2002. Field work <br /> was performed in accordance with the AGE-prepared document, Work Plan for Additional Well <br /> Installation - December 2000, dated 20 December 2000. The work plan was approved by the San <br /> Joaquin County Environmental Health Department (EHD) by letter dated 02 January 2001. <br /> 1 <br /> 2.1. WELL MONITORING AND EVACUATION <br /> ' The depth to ground water was measured in each well from the top of the well casing to the nearest <br /> 0.01-foot utilizing a Solinst water level meter. Ground water elevation in each well at the site was <br /> ' calculated by subtracting the measured depth to ground water from the surveyed casing elevation <br /> (Table 1). Ground water elevations were plotted and contoured on a scaled site map (Figure 3). <br /> ' After water levels were measured, approximately 5 gallons of ground water (a minimum of three <br /> casing-water volumes per well) were removed from wells MW-1,MW-2,MW-3,MW-5 and MW-6, <br /> and approximately 11 gallons of ground water were removed,from well MW-4 before the well was <br /> ___ _ purged dry, utilizing a dedicated,disposable polyethylene bailer at each well. Temperature, pH.and <br /> conductivity were measured for stabilization at regular purge-volume intervals using an Oakton water <br /> analyzer. Field data and logs are in Appendix A. Purged ground water was containerized in <br /> ' DOT-approved model 17H 55-gallon drums and stored at the site. <br /> Advanced GeoEnvironwental,Inc_ <br />