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r <br /> IQuarterly Report - Third Quarter 2005 <br /> �•t FERNANDO'S PLACE ' , <br />' 1201 South Center Street, Stockton, CalIfornla <br /> L <br />' 1.0. INTRODUCTION <br /> At the request of Mr Roger Hucktns,Advanced GeoEnvironmental, Inc (AGE) has prepared this <br />' quarterly report for the property located at 1201 South Center Street,Stockton,California(site) The <br /> scope of work included the performance of quarterly ground water monitoring, submission of <br /> monitoring and analytical data to the State Water Resources Control Board's GeoTracker <br />' information management system, and preparation of this report The location of the site and the <br /> surrounding area is illustrated on Figure 1, structures, former underground storage tank (UST) <br /> locations, soil boring and monitoring well locations are illustrated on Figure 2 Site background <br /> information is provided in Appendix A <br /> Based on the results of previous investigations, AGE has informally identified five hydrogeologic <br />' units between first encountered ground water and 199 feet below surface grade (bsg) as having <br /> significant intervals of apparently porous,coarser-grained soil separated by intervals of finer-grained, <br /> I less permeable soil (Appendix A) Hydrogeologic Unit 1 (HU-1) was identified at depths between <br /> 25 feet(first encountered ground water)and 90 feet bsg, it was subdivided into three sub-units(HU- <br /> 1 Upper Zone,HU-1 Middle Zone, and HU-1 Lower Zone)that may not have significant barriers to <br /> vertical migration of contaminations Hydrogeologic Unit 2(HU-2)was identified at depths between <br /> 112 feet and 125 feet bsg, Hydrogeologic Unit 3 (HU-3) was identified at depths between 140 feet <br /> and 160 feet bsg, Hydrogeologic Unit 4 (HU-4) was identified at depths between 160 feet and 175 <br /> feet bsg, and Hydrogeologic Unit 5 (HU-5) was identified at depths between 190 feet and 199 feet <br /> bsg <br /> 2.0.' PROCEDURES <br /> j <br />' Field work was performed in accordance with guidelines issued by the Central Valley Regional <br /> Water Quality,Control Board (CVRWQCB) and the San Joaquin County Environmental Health _ <br /> Department(EHD) for the investigation of underground storage tank(UST) sites and the sampling <br /> Iof ground water monitoring wells, respectively ' <br /> At the request of the San Joaquin County Environmental Health Department (EHD), Fernando's <br />' quarterly ground water monitoring event was coordinated to occur concurrently with ground water <br /> monitoring activities at the adjacent Arc Weld and Pump site(1211 Turnpike Road) However, due <br /> I to lack of response this quarter,AGE was unable to report ground water monitoring data for the Arc <br /> Weld and Pump site <br /> I , <br /> r. <br /> Y Advanced GeoEnvironmental,Inc <br />