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March 28,2005 <br /> NOA Project Number: E05007B <br /> Table 3. <br /> San Joaquin County Soil Survey <br /> Selected Soil Properties 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 /> V <br /> Capay clay, 0-20: Clay:CH,CL <4 6.6-8.4 0.06-0.2 Poor:too <br /> wet,0-2% 20-44: Clay,silty clay:CL,CH <4 6.6-8.4 0.06-0.2 clayey <br /> ` slopes,121. 44-60: Silty clay loam,clay loam;CL <4 6.6-8.4 0.06-0.2 <br /> Vernalis 0-9: Clay loam;CL <2 6.6-8.4 0.2-0.6 Severe:peres <br /> clay loam, 9-47: Loam,silt loam,clay loam;CL,Cl- <� <br /> 7.4-8.4 0.6-2.0 slowly <br /> wet,0-2% ML <br /> slopes,269. 47-60: Stratified sandy loam to silty clay <� 7.9- 8.4 0.6-2.0 <br /> loam;CL CL-ML <br /> Note:The table descriptions do not necessarily reflect site-specific soil properties. <br /> 5.1 Soil Boring Locations <br /> imp <br /> Two soil borings were advanced on the Site,all 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 /> ow Plate 1. <br /> 5.2 Soil Boring Dimensions <br /> ►. <br /> The soil borings were three feet deep, as noted above,al( <br /> d were three o four 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). Tables 4 through 5 present the soil logs for the <br /> 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 /> 0-1.5 Medium brown,moist,clay CL <br /> 1.5-3.5 Light brown,moist,clay with silt Ml- <br /> 7 <br /> L7 'A�A <br />