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' Quarterly Report - Third Quarter 2005 <br /> . CHET'S AUTOMOTIVE <br /> ' 545 East Miner Avenue, Stockton, California <br /> t1.0. INTRODUCTION <br /> ' At the request of Ms Kimberly Farris-Yarwood of the Estate of Chester Farris (property owner), <br /> Advanced GeoEnvironmental, Inc (AGE) has prepared this quarterly report for 545 East Miner <br /> Avenue, Stockton, California(the site) The scope of work included the monitoring and sampling <br /> ' of five ground water monitoring wells,submittal 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 site and Its surroundings are Illustrated on Figure 1 Structures,probe boring,soil sample, <br /> ' and monitoring well locations are shown on Figure 2 <br /> This report was prepared in accordance with Central Valley Regional Water Quality Control Board <br /> (CVRWQCB)guidelines for the investigation of underground storage tank(UST)sites Site history <br /> and findings from previous site investigations are summarized in Appendix A,the results ofprevious <br /> monitoring events are included in the tables of this report <br /> ' 2.0. PROCEDURES <br /> This investigation was conducted in accordance with guidelines established by the CVRWQCB and <br /> the San Joaquin County Environmental Health Department(EHD)for the subsurface Investigation <br /> of UST sites and sampling of ground water monitoring wells, respectively <br /> ' 21 WELL MONITORING AND EVACUATION <br /> ' On 26 August 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 ground water <br /> depth measurements were collected, monitoring wells MWA through MW-5 were purged of <br /> standing water using dedicated,disposable plastic bailers Approximately 2 0 to 2 3 gallons of water <br /> were purged from wells MW-1 through MW-4 and 19 gallons of water were purged from well <br /> MW-5 Ground water temperature,pH,and conductivity were measured at regular intervals during <br /> purging using an Oakton water analyzer Field data logs are Included In Appendix B <br /> ' 22 GROUND WATER SAMPLE COLLECTION <br /> ' Ground water samples were collected from the monitoring wells using dedicated,disposable plastic <br /> bailers after allowing the wells to achieve a minimum 80%recovery of the pre-purge water volume <br /> • Immediately upon retrieval, samples were transferred into chilled,40-milliliter(ml)EPA-approved <br /> ' Advanced GeoEnvironmentai,Inc <br />