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L - - '�.d <br /> L May 17,2005 <br /> NOA Project Number: E04146B <br /> L {�/The surface and near surface soils located at the Site are reported by the San Joaquin County Soil Sumey <br /> L to be composed of Egbert silty clay loam,partially drained, 0 to 2 percent slopes, Sailboat silt loam, <br /> drained, 0 to 2 percent slopes, and Scribner clay loam,partially drained, 0 to 2 percent slopes <br /> (USDA, 1992;Plate 4). Table 2 presents some selected properties of these soils: <br /> ' Table 2. <br /> San Joaquin County Soil Survey <br /> Selected Soil Pro erties of On-Site Soils. <br /> LSoil Name Depth Unified Soil Classification Salinity Soil Perme- Septic tank <br /> and Map (in) mmhos/cm Reaction ability absorption <br /> Symbol pH (in/hr) fields <br /> L <br /> LEgber,silty 0-8: Silty clay loam;CL <2 6.1 -7.3 0.2-0.6 Severe:peres <br /> lo8-19: Silty clay loam,clay loam,clay; <2 6.1 -7.8 0.06-0.2 slowly <br /> LCL,CH <br /> drained,0 to 19-60: Course sandy loam;SM <2 6.1 -8.4 0.06-0.2 <br /> 2 percent Silty clay loam,clay loam,clay; <br /> slopes,153. CL,CH <br /> Sailboat silt 0-8: Silt loam;CL-ML,ML <2 6.1 -7.3 0.6-2.0 Severe:peres <br /> loam,drained, 8-23: Stratified sandy loam to silty clay <2 6.6-7.8 0.2-0.6 slowly <br /> 0 to 2 percent loam;CL-ML,CL <br /> slopes,234. 23-61: Stratified sandy clay loam to silty <2 7.4-8.4 0.2-0.6 <br /> clay loam;CL <br /> Scribner clay 0-24: Clay loam,CL <2 6.1 -7.8 0.2-0.6 Severe: <br /> loam,partially 24-60: Stratified loam to silty clay loam, <2 6.6-8.4 0.2-0.6 wetness, <br /> L drained,0 to CL. peres slowly <br /> 2 percent <br /> slopes,243. <br /> L Note:The table descriptions do not necessarily reflect site-specific soil properties. <br /> /5.1 Soil Boring Locations <br /> L <br /> A total of three soil borings were advanced on the Site, one boring to a depth of 3.43 feet, one to a <br /> L depth of 3.50 feet, and one to a depth of 3.60 feet. The two shallower soil borings were used later <br /> for percolation test holes;the locations of the borings are indicated on Plate 1. <br /> L /5.2 Soil Boring Dimensions <br /> The soil boxings were 3.43, 3.50, and 3.60 feet deep, as noted above, and were four inches in <br /> Ldiameter. <br /> L <br /> 1 6 <br /> L '.444 <br /> L <br />