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November 30, 2007 <br /> NOA Pro)ect Number: E07188A <br /> 5.1 Soil Boring Locations <br /> A total of one soil boring was advanced on the parcel of the site to a depth of approximately three <br /> and a half feet. The soil boring was used later for a percolation test hole the location of the boring is <br /> indicated in Plate 1. <br /> 5.2 Soil Boring Dimensions <br /> The soil boring was approximately three and a half feet, as noted above, and was four'inches in <br /> diameter. <br /> 5.3 Soil Lithology Observed <br /> Generally, the soils encountered in the boring were 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 three and a half <br /> foot soil boring. <br /> Table 4. <br /> Soil Boring Log. <br /> Depth Interval(ft) Soil Type Unified Soil Classification <br /> 0-3.5 Brown sandy silt SM <br /> 5.4 Discussion of Soil Lithology <br /> A visual inspection of the shallow soils from on-site drillin indicates potential for percolation <br /> P g P <br /> because of the silty conditions of the soils. A percolation test is the best method to determine the <br /> suitability of the soils. Please see the next section for percolation test results. Generally speaking, <br /> coarser-grained soils have much greater potential for percolation than fine-grained or cemented <br /> soils. <br /> 6.0 PERCOLATION TEST INFORMATION <br /> 6.1 Percolation Test Locations <br /> A site map indicating the location of the percolation test hole is included as Plate 1 in.the appendix <br /> of this report. <br /> 6.2 Number of Percolation Tests <br /> One shallow percolation test was conducted on the parcel of the site for a total of one percolation <br /> test. <br /> 7 <br />