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A M B R I A <br /> INVESTIGATION RESULTS <br /> Personnel Present- Cambria geologist Geno Mammim directed the field activities, <br /> working under the supervision of California Registered <br /> Geologist Joe Neely <br /> Permits• Cambria obtained permit No 0037739 from SJCEHD and an <br /> encroachment permit from San Joaquin County Department of <br /> Public Works (Appendix A) <br /> Drilling Company- Gregg Drilling and Testing, Inc and Gregg In Situ (Gregg), of <br /> Martinez, California (C57 License Nos 485165 and 656407, <br /> respectively) <br /> Drilling Dates• May 3 through 6 and 13, 2004 <br /> Drilling Method- Six-and 10-inch hollow-stem auger (HSA) and CPT <br /> • Number of Borings: Three HSA borings were drilled and converted into groundwater <br /> monitoring wells MW-7 through MW-9 Cambria made four <br /> attempts to advance a CPT boring (SB-3) All these attempts <br /> were terminated due to refusal Boring and well specifications <br /> are described in Table 1, and the locations are shown on <br /> Figure 2 <br /> Sampling Methods. Cambria logged soils from the HSA borings using the Unified <br /> Soil Classification System and Munsell Soil Color Charts Soil <br /> samples were collected at 5-foot intervals for soil description, <br /> potential chemical analysis, and headspace analysis Soil <br /> samples were screened in the field for the presence of organic <br /> vapors using a photo-ionization detector (PID) The PID <br /> readings are recorded on the boring logs Soils from the <br /> attempted CPT boring were logged continuously using CPT <br /> electronic logging equipment No soil samples were collected <br /> Appendix B presents Cambria's HSA boring logs, and <br /> Appendix C presents Gregg's CPT report <br /> a 0953 3 <br />