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CAMBRIA <br /> i <br /> INVESTIGATION RESULTS <br /> Personnel Present Project Engineer Bob Perlowski (December 6) and Geologist <br /> Darren Croteau (December 13, 14, and 15) directed the field <br /> sampling, working under the supervision of California <br /> Registered Geologist Joe Neely <br /> Permits Cambria obtained well construction permit 021054 from the <br /> SJCPHS/EHD (Appendix A) <br /> Drilling Company Gregg Drilling and Testing, Inc (Gregg) of Martinez, <br /> California, (C57 License 9 485165) <br /> Drilling Date December 6, 13, 14, and 15, 1999 <br /> Drilling Method Hollow-stem auger and Cone Penetration Testing (CPT) <br /> • Sampling Methods Soil lithology was logged using the Unified Soil Classification <br /> System and the Munsell Soil Color Charts for well S-4, and <br /> CPT logging equipment for soil borings SB-4 through SB-6 <br /> Encountered lrthology for well S-4 is described on the <br /> exploratory boring log presented in Appendix B The CPT <br /> boring logs for borings SB-4, SB-5, and SB-6 are presented in <br /> Gregg's CPT Site Investigation report (Appendix C) Soil <br /> samples were collected at five foot intervals in boring S-4, and <br /> at various depths between 30 and 110 fbg in borings SB-4 <br /> through SB-6 Soil samples were collected for lithologic <br /> description, potential chemical analysis, and head-space <br /> analysis Soil samples from each interval were screened for <br /> the presence of organic vapors using a photo-ionization <br /> detector (PID) PID readings for well S-4 are recorded on the <br /> boring log (Appendix B) <br /> Number of Borings. Four soil borings (S-4, SB-4, SB-5, and SB-6) were drilled in <br /> the locations shown on Figure 2 S-4 was converted into a <br /> groundwater monitoring well <br /> • <br /> 0797 3 <br />