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L <br /> June 23, 2006 <br /> NOA Project Number: E05165B <br /> L5.1 Soil Boring Locations <br /> A total of 6 soil borings w dvanced on the Site,all to a depth of approximately three to three <br /> and a half feet.The soorin were used later for percolation test holes;the locations of the <br /> borings are indicated ' Plate <br /> 5.2 Soil Boring Dimensions <br /> r. <br /> The soil borings were approximately three to three and a half feet deep, as noted above,and were <br /> four inches in diameter. <br /> V <br /> 5.3 Soil Lithology Observed <br /> L 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 3 presents a soil log for the 3.5 foot deep soil <br /> boring. Conditions were comparable in the shallow holes. <br /> Table 3. <br /> Soil Boring Log. <br /> Depth Interval(ft) Soil Type Unified Soil Classification <br /> 0-3.5 Medium brown,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 potential for / <br /> percolation because of the sandy nature of the soils.A percolation test is the best method to <br /> determine the suitability of the soils. Please see the next section for percolation test results. <br /> Generally speaking, coarser-grained soils have much greater potential for percolation than fine- <br /> grained or cemented soils. <br /> s <br /> 6.0 PERCOLATION TEST INFORMATION <br /> 6.1 Percolation Test Locations <br /> V <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 /> 7 <br /> '-.44 <br /> L <br />