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u <br /> C A M B R I A <br /> 0 <br /> (greater than 1,700 feet east of the 7-Eleven site) and one private well was identified on Toste <br /> Road, southwest of the 7-Eleven site <br /> No surface water bodies were identified within a 2,000-foot radius of the site The locations of <br /> these wells are depicted on Figure 1 <br /> Quarterly Groundwater Monitoring: A quarterly groundwater monitoring program has been in <br /> place at this site since March 2003 Currently all wells at the site are gauged and sampled <br /> quarterly and analyzed for TPHg, benzene, toluene, ethylbenzene, and xylenes (BTEX), MTBE, <br /> TBA, tertiary amyl methyl ether (TAME), di-isopropyl ether (DIPE), and ethyl tertiary butyl <br /> ether (ETBE) Additionally, wells MW-1 through MW-4 are sampled annually in the third <br /> quarter for ethanol <br /> The scope of work proposed in the above-referenced work plan and work plan addendum <br /> included the installation of three shallow groundwater monitoring wells and one soil boring by <br /> Cone Penetration Test (CPT) to assess the lateral and vertical extent of gasoline constituent <br /> impact in soil and groundwater beneath the site The results of this investigation are presented <br /> below <br /> INVESTIGATION RESULTS <br /> Personnel Present. Staff Geologist John Gerbrandt directed the field activities, <br /> working under the supervision of California Professional <br /> Geologist Joe Neely <br /> Permits Drilling permits No 40933 and 40934 were obtained from <br /> SJCEHD (Appendix A) <br /> Drilling Company: Gregg Drilling and Testing, Inc (Gregg) and Gregg In Situ of <br /> Martinez, California (C57 License Nos 485165 and 656407) <br /> Drilling Dates: January 27 and 28, 2005 and March 4 and 7, 2005 <br /> Drilling Methods• Hollow-stem auger(HSA)and CPT <br /> Number of Borings Three HSA borings (MW-5 though MW-7) and one CPT boring <br /> . (SB-1) were drilled Borings MW-5 though MW-7 were <br /> 1661 3 <br />