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1 <br /> ' Quarterly Report - First Quarter 2005 <br /> FIVE STAR MARINA <br /> ' 345 Yosemite Street,Stockton, California <br /> ' 1.0. INTRODUCTION <br /> At the request of Mr Terry McDonald of Five Star Marina, Advanced GeoEnvironmental, Inc <br /> ' (AGE)has prepared this quarterly report for the property located at 345 Yosemite Street, Stockton, <br /> California (site) The scope of work included the performance of a quarterly ground water <br /> monitoring event,submission of monitoring and analytical datato the State Water Resources Control <br /> Board's GeoTracker information management system,destruction of monitoring well MW-UST,and <br /> preparation of this report The location of the site and the surrounding area are illustrated on <br /> ' Figure 1, structures, former underground storage tank (UST) locations, and soil boring and <br /> monitoring well locations are illustrated on Figure 2 <br /> Site history and findings from previous investigations and monitoring events are provided in <br /> Appendix A The results of previous ground water monitoring events are included in the tables of <br /> this report <br /> 1' <br /> 2.0. PROCEDURES <br /> lie This investigation was conducted in accordance with Central Valley Regional Water Quality Control <br /> Board(CVRWQCB)and San Joaquin County Environmental Health Department(EHD)guidelines <br /> ' for the subsurface investigation of underground storage tank (UST) sites and sampling of ground <br /> water monitoring wells,respectively <br /> 21 WELL MONITORING AND EVACUATION <br /> ' On 20 January 2005, a Solinst water level meter was used to measure the depth to ground water in <br /> monitoring wells MW-1 through MW-5 relative to the tops of the well casings After the depth to <br /> ' ground water measurements were collected,casing water in the wells was evacuated using dedicated, <br /> disposable plastic bailers Between 5 0 and 5 5 gallons of water were evacuated from MW-1 through <br /> MW-5 (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 on-site <br /> Advanced GeoEnvironmentai,Inc <br /> 1 <br />