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e *Mole <br /> October 13, 2004 <br /> ` NOA Project Number: E040112B <br /> 5.1 Soil Boring Locations <br /> Four soil borings were advanced on the Site. Two borings were drilled to a depth of 25 feet,and <br /> two other borings were drilled to a depth of three feet. The soil borings were used later for <br /> percolation test holes; the locations of the borings are indicated in Plate 1. <br /> 5.2 Soil Boring Dimensions <br /> The soil borings were 25 or three feet deep, as noted above, and were six inches in diameter. <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 representative soil log for the <br /> 25-foot deep soil borings. Conditions were comparable in all four borings. <br /> Table 4. <br /> Soil Boring Log for P-1 and P-2 <br /> Depth Interval(ft) Soil Type Unified Soil Classification <br /> 0-9 Light brown silt with fine sand AIL 3) <br /> 9-25 Light brown silt with fuse to medium sand AIL./SP <br /> Note: Conditions were comparable in all holes,shallow and deep. <br /> 5.4 Discussion of Soil Lithology <br /> A visual inspection of the shallow and deep soils from on-site drilling indicates some potential for <br /> satisfactory percolation. A percolation test is the best method to determine the suitability of the <br /> soils. Please see the next section for percolation test results. Generally speaking, sandy soils have <br /> much greater potential for percolation than fine-grained 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 of this report. <br /> 6.2 Number of Percolation Tests <br /> One shallow and one deep percolation test were conducted on each proposed parcel of the Site, for 0,1) <br /> ~ a total of two shallow and two deep percolation tests. <br /> 6 <br />