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ILI <br /> �CAMBRIA <br /> None of the soil samples contained detectable levels of benzene, or fuel oxygenates Two soil <br /> sample contained TPHg at concentrations of 4 59 and 54 7 parts per million (ppm) and five of the <br /> soil samples contained ethylebenzene and/or xylenes at concentrations ranging from 0 0138 to <br /> 155 ppm These findings are documented in Cambria's August 18, 1999 Underground Storage <br /> Tank Removal Report <br /> INVESTIGATION RESULTS <br /> Personnel Present Cambria geologist Scott Lewis directed the field activities, <br /> working under the supervision of California Registered <br /> Geologist Joe Neely <br /> Permits A drilling permit was obtained from the SJCPHS/EHD <br /> (Appendix A) <br /> Drilling Company Gregg InSitu, Inc (Gregg) of Martinez, California, (C57 License <br /> #656407) <br /> • Drilling Dates: July 19, 20, &27, 2001 <br /> Drilling Method Cone Penetration Testing (CPT) <br /> Sampling Methods. Soil lithology was logged using CPT logging equipment The <br /> CPT boring logs are presented in Gregg's CPT Site Investigation <br /> report (Appendix B) Soil samples were collected at <br /> approximately ten-foot intervals in the boring for potential <br /> chemical analysis, and head-space analysis <br /> Number of Borings Four CPT borings (SB-1 through SB-4) were drilled in the <br /> locations shown on Figure 2 4- _ <br /> Boring Depths Boring SB-1 was drilled to 60 feet below grade (fbg) and <br /> borings SB-2 through SB-4 were drilled to 70 fbg (Table 1) <br /> Groundwater Depths Pore pressure dissipation tests were performed with the CPT <br /> equipment in borings SB-1, SB-3, and SB-4 This test is used to <br /> • determine depth to groundwater in the boring The results of <br /> 1511 2 <br />