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Sunrise Trucking— Soil Suitability Section Page 7 of 16 <br /> Our Project Number: NA157003G <br /> October 23, 2015 <br /> 1.5 Soil Profile and Geologic Information <br /> IThe site is depicted on the Geologic Maps of the San Francisco-San Jose Quadrangle, California, <br /> as within the alluvium of the Modesto Formation2. These Pleistocene soils consist primarily of <br /> compact silt and very fine sand (Plate 5). <br /> The surface and near surface soils located at the site are reported by the United States <br /> Department of Agriculture (USDA)Soil Conservation Service(Plate 6)to be composed of Veritas <br /> fine sandy loam, consisting of moderately well-drained fine sandy loam derived from mixed rock <br /> sources. <br /> 1.5.1 Soil Boring Locations <br /> One soil boring was advanced on the site with which to perform the percolation test. The location <br /> of the boring is depicted in Plate 2. <br /> 1.5.2 Soil Boring Dimensions <br /> The soil boring was advanced with 4 inch diameter hand auger and excavated to a depth of 3.5 <br /> feet bgs. <br /> 1.5.3 Soil Lithology Observed <br /> ' The table below presents a log of the soil boring. <br /> Table 1. <br /> ' Soil Boring Log. <br /> Depth Interval (ft) Soil Type Unified Soil Classification <br /> 0.0-0.75 Aggregate base course <br /> 0.75-3.5 Silty sand-brown, fine, moist, SM <br /> loose <br /> 1.5.4 Discussion of Soil Lithology <br /> A visual inspection of the soils from the test hole indicates favorable conditions for a septic <br /> disposal areas due to the cohesionless and loose nature of the soil. Generally speaking, coarse- <br /> grained soil has a greater potential for percolation than fine-grained or cemented soil. <br /> Z California Division of Mines and Geology. Wagner, D.L.,Bortugno, E.J.,and McJunkin, R.D. Geologic Map of the San Francisco- <br /> San Jose Quadrangle,California,Map 5A. 1991. 1:250,000. <br /> 1 <br /> 02015 Neil O.Anderson&Associates,Inc. <br /> A Terracon Company <br />