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March 11, 2005 <br /> NOA Project Number: E040150A <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 /> 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. 44-60: Silty clay loam,clay loam;CL <4 6.6-8.4 0.13-0.19 <br /> Vernalis 0-9: Clay loam;CL <2 6.6-8.4 0.17-0.18 Severe:peres <br /> clay loam, 9-47: Loam,silt loam,clay loam;CL, <2 7.4-8.4 0.14-0.18 slowly <br /> wet,0-2% CI_ML <br /> slopes,269. 47-60: Stratified sandy loam to clay loam; <2 7.9-8.4 0.11 -0.18 <br /> CL,CL-ML <br /> Note:The table descriptions do not necessarily reflect site-specific soil properties. <br /> 5.1 Soil Boring Locations <br /> Five soil borings were advanced on the Site to a depth of three feet. The soil borings were used (j J <br /> later for percolation test holes; the locations of the borings are indicated in Plate 1. <br /> 5.2 Soil Boring Dimensions <br /> The soil borings were three feet deep, as noted above, nd were three 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 8 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 /> 0-2 Dark brown,moist,clayey silt JII, <br /> 2-2.8 Light brown,moist,clayey silt \IL <br /> 2.8-3 Light brown,moist,silty fine to medium sand S\I <br /> with some da <br /> 6 <br />