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L <br /> L October 23,2006 <br /> t NOA Project Number: E06103A <br /> } The surface and near surface soils located at the Site are reported by the San Joaquin County Soil Survey <br /> ` to be composed of San Joaquin Loam Complex, 0-1 % slopes (Plate 8). <br /> Table 2. <br /> ` San Joaquin County Soil Survey <br /> Selected Soil Properties of On-Site Soils. <br /> ` Soil Name Depth Unified Soil Classification Salinity Soil Penne- Septic tank <br /> and Map (in) mmhos/cm Reaction ability absorption <br /> Symbol pH (in/hr) fields <br /> San Joaquin 0-16 Loam;CL-ML,.ML <2 5.6-6.5 0.6-2.0 Severe: <br /> loam 16-26 Clay loam,day;CL <2 6.1-7.8 <0.06 cemented <br /> Complex, 26-60 Indurated -- -- -- pan,peres <br /> 0-2% slowly <br /> + slopes 241 <br /> Note:The table descriptions do not necessarily reflect site-specific soil properties. <br /> L /5.1 Soil Boring Locations <br /> L A total of four soil boxings were advanced on the Site, two boxings to a depth of about three and a <br /> half feet and two borings to a depth of approximately 19 and 23 feet.All four soil borings were used <br /> /later for percolation test holes;the locations of the borings are indicated in Plate 1. <br /> ✓ <br /> V 5.2 Soil Boring Dimensions <br /> The soil borings were about 19,23 and about three and a half feet deep, as noted above. The <br /> L diameter of the borings was four inches. <br /> /5.3 Soil Lithology Observed <br /> Generally,the soil encountered in the borings is similar to the soils reported by the San Joaquin <br /> County Soil Survey for the area (USDA, 1992).Table 3 presents the representative soil log for the 23 <br /> foot deep soil 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 /> 0-17 Brown clay with silt CL <br /> 17-19 Brown clayey sand SC <br /> 19-23 ~ Brown ,I da CL <br /> 5 <br />