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CAMBRIA <br /> Drilling Dates October 1 through 3, 2001 <br /> Drilling Method. Cone penetration testing (CPT) <br /> Soil Sampling Methods. Soil encountered in each boring was logged continuously using <br /> electronic CPT logging equipment The CPT logs are presented <br /> in Gregg's CPT Site Investigation report (Appendix B) Soil <br /> samples were collected at approximately ten-foot intervals <br /> below the water table in borings CPT-1 and CPT-2 Soil <br /> samples were collected for potential chemical analyses and <br /> head-space analysis <br /> Groundwater Sampling. Groundwater samples were collected from the CPT borings <br /> using Hydropunch equipment Four groundwater samples were <br /> collected from each of borings CPT-1 and CPT-2 and one <br /> groundwater sample was collected from each of borings CPT-3 <br /> through CPT-6 <br /> Number of Bonngs Six CPT borings (CPT-1 through CPT-6) were drilled in the <br /> locations shown on Figure 2 <br /> Boring Depths: Borings CPT-1 and CPT-2 were drilled to 100 06 feet below <br /> grade (fbg), borings CPT-3, CPT-4, and CPT-6 were drilled to <br /> 60 04 fbg, and boring CPT-5 was drilled to 70 05 fbg (Table 1) <br /> Groundwater Depths. Pore pressure dissipation tests were performed with the CPT <br /> equipment in borings CPT-1 and CPT-2 to determine depth to <br /> groundwater in the boring The results of this testing suggest <br /> that groundwater occurs at a depth of 55 fbg in CPT-1 and at <br /> 54 fbg in CPT-2 <br /> Soil Types Soil types encountered in borings CPT-1 through CPT-6 include <br /> clay, silty clay, silt, clayey silt, sandy silt, sand, silty sand, and <br /> gravelly sand Another soil type encountered was "stiff fine- <br /> grained" which is a CPT category that does not translate directly <br /> the Unified Soil Classification System In general, soils beneath <br /> the site consist of alternating layers of fine-grained soils (silts <br /> 0955 4 <br />