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i <br />' Quarterly Report - First Quarter 2005 <br /> ' t VANCO TRUCK& AUTO PLAZA <br /> 1033 West Charter Way, Stockton, California <br /> 1 ' <br /> { b <br /> t <br />' 1.0. INTRODUCTION <br /> ^u At the request of Mr David Atwater of Van-De Pol Enterprises,Advanced GeoEnvironmental,Inc <br /> (AGE)has prepared this Quarterly Report-First Quarter 2005 for the property located at 1033 West <br /> Charter Way,Stockton,California(site) The scope of work included the performance of a quarterly <br /> ground water monitoring event, submission of monitoring and analytical data to the State Water- <br /> Resources Control Board's GeoTracker information management system, and preparation of this <br /> report The location of the site and surrounding area are illustrated on Figure 1, structures, soil <br />' borings, and monitoring well locations are illustrated on Figure 2 <br /> This report has been prepared in accordance with guidelines established by the Central Valley <br /> Regional Water Quality Control Board (CVRWQCB) for the subsurface investigation of <br />' underground storage tank (UST) sites Background information, including details of previous site <br /> assessment work, is presented in Appendix A <br /> 2.0. PROCEDURES <br /> Field work was conducted in accordance with guidelines established by the CVRWQCB for the <br /> investigation of UST sites and the San Joaquin County Environmental Health Department (EHD) <br /> for the sampling of ground water monitoring wells <br /> 2 1 WELL MONITORING AND EVACUATION, <br /> On 05 March 2005, a Solinst water level meter was used to measure the depth to ground water in <br /> fmonitoring wells MW-1 through MW-3 relative to the tops of the well casings After the depth to <br /> ground water measurements were collected, casing water in each monitoring well was evacuated <br /> using a Waterra inertia pump and dedicated tubing Approximately 7 5 gallons of water were <br />' evacuated from each of the monitoring wells, equivalent to three casing water volumes per well <br /> Temperature, pH, and conductivity of the purged water were measured for stability at regular <br />' intervals using an Oakton water analyzer Field data logs are provided in Appendix B Purged water <br /> was containerized in properly labeled, Department of Transportation (DOT)-approved 55-gallon <br />' drums and stored ori-site pending`proper disposal <br /> F <br />' 22 COLLECTION AND ANALYSIS OF GROUND WATER SAMPLES <br /> Ground water samples were collected from each monitoring well using a Waterra inertia pump and <br /> Advanced GeoEnvironmental,Inc <br /> 1 r <br />