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` February 4, 2005 <br /> NOA Project Number: E040142A <br /> L Table 3. <br /> —San Joaquin County Soil Survey— <br /> Selected Soil Pro erties of On-Site Soils. <br /> Soil Name Depth Unified Soil Classification Salinity Soil Perme- Septic tank <br /> and Map (in) mmhos/ Reaction ability absorption <br /> Symbol cm pH (in/hr) fields <br /> r Capay clay, 0-20: Clay;CH,CL <4 6.6-8.4 0.13-0.16 Poor:too <br /> wet,0-2% 20-44: Clay,silty clay;CH,CL <4 6.6-8.4 0.13 -0.16 clayey <br /> slopes,121. 4460: Silty clay loam,clay loam;CL <4 6.6-8.4 0.13 -0.19 <br /> Willows 0-20: Clay;CH 2-8 7.9-9.0 <0.06 Poor: too <br /> clay, 20-60: Clay,silty clay;CH >4 8.5-9.0 <0.06 clayey,hard <br /> partially to pack, <br /> drained,0- excess salt <br /> 2%slopes, <br /> 274. <br /> Note:The table descriptions do not necessarily reflect site-specific soil properties. <br /> ho <br /> 5.1 Soil Boring Locations <br /> 4 <br /> L Four soil borings were advanced on the Site. The borings were drilled to a depth of three feet. The <br /> soil borings were used later for percolation test holes;the locations of the borings are indicated in <br /> Plate 1. <br /> L <br /> 5.2 Soil Boring Dimensions <br /> LThe soil borings were three feet deep, as noted above, and were three inches in diameter. <br /> y 5.3 Soil Lithology Observed <br /> V <br /> Generally, the soil encountered in the boring is similar to the soils reported by the San Joaquin <br /> j County Soil Survey for the area (USDA, 1992). Table 4, 5, 6, and 7 present the soil logs for the <br /> L three foot deep soil borings. <br /> Table 4. <br /> Soil Boring Log for P-1. <br /> Depth Interval (ft) Soil Type Unified Soil Classification <br /> 0-2.0 Dark brown,moist,sandy silt with clay SM <br /> 2.0-2.5 Dark brown,moist,silty sand SM <br /> 2.5-3.0 Brown,moist,silty sand with calcite lenses SM <br /> 7 <br />