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' 4 u <br /> 6. April 20,2005 <br /> NCA Project Number: E05022B <br /> L 5.2 Soil Boring Dimensions <br /> The soil borings were 25 feet, almost 14 feet, eight feet or three feet deep, as noted above, and were <br /> Lfour inches in diameter. <br /> 5.3 Soil Lithology Observed <br /> LGenerally,the soil encountered in the boring is similar to the soils reported by the San Joaquin <br /> County Soil Survey for the area (USDA, 1992). Tables 4, 5 and 6 present the soil log for the deep <br /> soil borings. Conditions were comparable in the shallower holes. <br /> Table 4. <br /> Soil Boring Lo P-1. <br /> .� Depth Interval(ft) Soil Type Unified Soil Classification <br /> 0-5 Light brown,moist,silty clay CL <br /> 5-11 Grey brown,moist,fine silty clay CL <br /> 11-14 Light brown,moist fine to very fine sandy silt SM <br /> 14-25 ht brown,moist,clayey silt I SM <br /> Table 5. <br /> Soil Boring Log 2. <br /> Depth Interval(ft) Soil Type Unified Soil Classification <br /> 0-1 Black,moist,silty clay CL <br /> 1-3 Brown,moist,silty clay CL <br /> 3-5 Brown,moist,silty medium to fine sand with SM <br /> some clay <br /> 5-7 Brown,moist,medium to fine sand with some silt ML <br /> Table 6. <br /> _ Soil Boring Lo P-3. <br /> Depth Interval(ft) Soil Type Unified Soil Classification <br /> 0-3 Black/tan,moist,silty clay CL <br /> 3-5 Brown,moist,clayey silt with some medium sand CL <br /> 5-10 Brown,moist,silty medium sand with some clay SM <br /> 10-13 Brown,moist,sil •medium to coarse sand I SM <br />