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L <br /> L June 6, 2006 <br /> NOA Project Number. E06019B <br /> ( 5.2 Soil Boring Dimensions <br /> L <br /> The soil borings were three and a half feet or 25 feet deep,as noted above,and were four inches in <br /> V <br /> diameter. <br /> 5.3 Soil Lithology Observed <br /> LGenerally,the soils encountered in the boxings were similar to the soils reported by the San Joaquin <br /> County Soil Survey for the area (USDA, 1992).Table 5 presents a representative soil log for the <br /> deep soil borings. Conditions were comparable in the shallow boring holes. <br /> Table 5. <br /> L <br /> Soil Boring Log. <br /> Depth Interval(ft) Soil Type Unified Soil Classification <br /> L 0-3 Dark brown,slightly moist,silty fine to medium SC <br /> sand with clay <br /> 3-4 Dark brown,slightly moist,silty fine to medium SC /t \ <br /> sand with clay(slightly cemented) l <br /> v <br /> 4-25 Dark brown,moist,clayey sand(slightly SC <br /> cemented <br /> L <br /> 5.4 Discussion of Soil Lithology <br /> LA visual inspection of the shallow soils from on-site drilling indicates little potential for percolation <br /> because of the clayey nature of the soils. A percolation test is the best method to determine the r 5 <br /> L suitability of the soils for a septic disposal area. Please see the next section for percolation test <br /> results. Generally speaking,coarser-grained soils have much greater potential for percolation than <br /> fine-grained or cemented soils. <br /> i <br /> L <br /> 6.0 PERCOLATION TEST INFORMATION <br /> L6.1 Percolation Test Locations <br /> A site map indicating the location 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 test were conducted on each parcel for a total of four /s Y� <br /> percolation test holes. <br /> L <br /> 7 <br /> r <br /> L "044 <br /> L <br />