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September 9, 2005 <br /> NOA Project Number: E0501 113 <br /> 5.3 Soil Lithology Observed <br /> Generally,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). Table 4 presents a soil log for the 16 foot deep soil <br /> boring. Conditions were comparable in the shallow hole. <br /> Table 4. <br /> Soil Boring Log. <br /> Depth Interval(ft) Soil Type Unified Soil Classification (> <br /> 0-7 Medium brown,moist clayey fine sand SC <br /> 7-15 Light brown,moist,silty fine sand with clay SM <br /> 15-20 Gray,moist,cemented silty fine sand with clay SM <br /> 15-25 Gray,moist,silty sand SM <br /> 5.4 Discussion of Soil Lithology <br /> A visual inspection of the shallow and deep soils from on-site drilling indicates little potential for <br /> percolation because of both the fine grained and cemented nature of the soils. A percolation test is 65,�, <br /> the best method to determine the suitability of the soils. Please see the next section for percolation <br /> test results. Generally speaking, sandy soils have much greater potential for percolation than fine- <br /> grained or cemented soils. <br /> 6.0 PERCOLATION TEST INFORMATION <br /> 6.1 Percolation Test Locations <br /> A site map indicating the locations of the percolation test holes is included as Plate 1 in the appendix <br /> of this report. <br /> 6.2 Number of Percolation Tests <br /> One shallow and one deep percolation tests were conducted on each parcel, for a total of four 2� <br /> shallow and four deep percolation tests on the subject property. <br /> 6.3 Boring Preparation and Presaturation <br /> A total of four shallow and four deep soil borings were advanced on the Site with a truck-mounted <br /> deep rock augur rig on August 24,2005. <br /> 7 "044 <br />