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vow <br />� AMBRIA <br /> Permits• Dnlhng permits were obtained from SJCEHD (Permit numbers <br /> 44193 and 44194) Copies of the permits are included as <br /> Appendix A <br /> Dnll:ng Company. Resonant Sonic International of Woodland, California <br /> (C57 License No 802334) <br /> Dnlling Date. October 7 through 19,2005 <br /> Drilling Method. RotaSonic <br /> Number of Wells: Four bonngs (MW-3-79, MW-3-119, MW-10-81, and <br /> MW-10-117) were drilled and converted into groundwater <br /> monitoring wells Bonng specifications are described in <br /> Table 1,and the locations are shown on Figure 2 <br /> Boring Depths: Well boring MW-3-79 was advanced to 80 fbg, well boring <br />• MW-10-81 was advanced to 81 fbg,and well borings MW-3-119 <br /> and MW-10-117 were advanced to 120 fbg <br /> Soil Sampling Methods: Soil types were logged using the Unified Soil Classification <br /> System and Munsell Soil Color Charts Encountered soil is <br /> described on the exploratory boring logs presented in <br /> Appendix B Soils were logged continuously in boring <br /> MW-10-117,and soil samples were collected at 10-foot intervals j <br /> for potential chemical analysis In the remaining borings, soils <br /> were logged continuously in the bottom 20 feet of each boring <br /> only Soil samples were screened in the field for the presence of <br /> organic vapors using a photo-ionization detector (PID) PID <br /> readings are recorded on the boring logs <br /> Groundwater Depths: First encountered groundwater was observed in boring <br /> MW-10-117 at approximately 27 fbg <br /> Soil Types• Soil types encountered while drilling generally consisted of silts, <br /> silty sands,clayey sands, and sands to the total explored depth of <br /> 120 fbg The boring logs are included in Appendix B <br />• <br /> 1399 4 <br />