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1 <br /> Quarterly Report - Fourth Quarter 2001 <br /> Franklyn Cole Property <br /> 7505 West Linne Road,Tracy, California <br />' 1.0. L TRODUCTION 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 groundwater monitoring event conducted during the fourth quarter 2001. The <br /> ' location and vicinity of the site are illustrated on Figure 1. The locations ofon-site structures,borings, <br /> wells and the former UST and dispenser are depicted on Figure 2. <br /> ' This 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 document titled Work Plan-April 1999, dated 23 April_1999. Quarterly monitoring <br /> data from August 1999 to the present is summarized in Tables 1 and 3 of this report. <br /> 2.0. PROCEDURES <br /> Monitoring wells MW-1 through MW-6 were monitored and sampled on 02 November 2001. Field <br /> work were performed in accordance with the AGE-prepared document, Work Plan for Additional <br /> Yvell Installation - December 2000, dated 20 December 2000. The work plan was approved by the <br /> San Joaquin County Public Health Services - Environmental Health Division(PHS-EHD) by letter <br /> dated 02 January 2001. <br /> 1 <br /> 2.1. WELL MONITORING AND EVACUATION <br /> ' Depths to ground water were measured in each well from the tops of the well casings 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 depths to ground water from the surveyed casing elevations <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 to 6 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 13 gallons of ground water were removed from well MW-4 before the well was <br /> dry, utilizing_a.newdisposable, dedicated polyethylene bailer at each well. Temperature, _pH and <br /> conductivity were measured for stabilization at regular purge-volume intervals from each well using <br /> an Oakton water analyzers. Field data and logs are in Appendix A. Purged ground water was <br /> ' containerized in DOT-approved model 17H 55-gallon drums and stored at the site. <br /> .Advanced Geo Environmental,Inc. <br />