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Or <br /> • CAMBRIA <br /> INVESTIGATION RESULTS <br /> Personnel Present: Geologist Scott Lewis directed the field sampling, working <br /> under the supervision of California Registered Geologist Joe <br /> Neely <br /> Permit Three drilling permits were obtained from SJCPHS/EHD <br /> (Permit numbers 27660, 27711, and 27722) Copies of the <br /> permits are included as Appendix A <br /> Drilling Companies: Gregg Drilling and Gregg InSitu of Martinez, California (C57 <br /> License Nos 485165 and 656407) <br /> Drilling Dates• October 15 through 17, 2001, and November 15, 2001 <br /> Drilling Method Hollow-stem auger and cone penetration test (CPT) <br /> Sampling Methods Soil types were continuously logged while drilling borings <br /> CPT-5 through CPT-7 using CPT equipment The soil types <br /> encountered are described on the CPT logs presented in <br /> Appendix B Soil samples from the borings were collected at <br /> varying intervals for potential chemical and headspace analyses <br /> Groundwater samples were collected for chemical analyses <br /> using hydropunch equipment where CPT logs indicated water- <br /> bearing soils occurred <br /> Number of Borings Three soil borings (CPT-5 through CPT-7) Boring <br /> specifications are described in Table 1 and locations are shown <br /> on Figure 2 <br /> Boring Depths CPT-5 and CPT-7 were drilled to 130 feet below grade (fbg) <br /> Baring CPT-6 encountered refusal at 82 fbg and was terminated <br /> at that depth <br /> Groundwater Depths During drilling activities, pore pressure dissipation tests <br /> indicated groundwater depths in the borings ranged from <br /> approximately 26 6 to 36 fbg <br /> 1399 2 <br />