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L <br /> LFebruary 16, 2005 <br /> NOA Project Number: E040149A <br /> LTable 3. <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/ Reaction ability absorption <br /> Symbol cm pH (in/hr) fields <br /> El Solyo 0-10: Clay loam;ML,CL <2 6.6-7.8 0.17-0.20 Severe:peres <br /> Clay loam, 10-60: Silty clay loam,silty clay-,ML,MH, <4 7.4-8.4 0.14-0.19 slowly <br /> 0-2% CL,CH <br /> slopes, 156. <br /> r <br /> Stormar 0-17: Clay loam;CL <2 6.6-7.3 0.16-0.18 Severe:peres <br /> clay loam, 17-47: Clay loam,clay;CL,CH <2 6.6-8.4 0.16-0.18 slowly <br /> r <br /> 0-2% 47-60: Clay loam,silty clay loam;CL <2 7.4-8.4 0.16-0.18 <br /> slo es,252. <br /> Note:The table descriptions do not necessarily reflect site-specific soil properties. <br /> 6' 5.1 Soil Boring Locations <br /> L Four soil borings were advanced to a depth of three feet on the Site. The soil borings were used <br /> later for percolation test holes; the locations of the borings are indicated in Plate 1. <br /> L5.2 Soil Boring Dimensions <br /> The soil borings were three feet deep, as noted above, and wer three inches in diameter. <br /> L 5.3 Soil Lithology Observed <br /> L 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). Table 4 through 7 presents the soil logs for the <br /> three foot deep soil borings. <br /> L Table 4. <br /> Soil Boring Log for P-1. <br /> Depth Interval (ft) Soil Type Unified Soil Classification <br /> 0-1.75 Dark brown,moist, clayey silt ML <br /> `„ 1.75-3 Brown,moist, sand with some silt SP <br /> Note:Conditions were comparable in all holes,shallow and deep. <br /> L <br /> L <br /> L 6 '404 <br /> L <br />