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Thelma E. Hieb Revocable Trust Page 4 <br /> Our Project Number: E07202B <br /> December 20, 2007 <br /> The surface and near surface soils located at the site are reported by the San Joaquin County <br /> Soil Survey to be composed of San Joaquin loam (Plate 6) (USDA, 1992). Table 1 presents <br /> some selected properties of these soils: <br /> Table 1. <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/cm) Reaction ability absorption <br /> Symbol pH (in/hr) fields <br /> San Joaquin 0-16 Loam; CL-ML, ML <2 5.6-6.5 0.6-2.0 Severe: <br /> loam, 0-2% 16-26 Clay loam, clay; CL <2 6.1-7.8 <0.06 cemented <br /> slopes, 238. 26-60 Indurated --- --- --- pan, peres <br /> slowly <br /> San Joaquin 0-12: Loam; CL-ML, ML <2 5.6 - 6.5 0.6 - 2.0 Severe: <br /> loam, thick 12-26: Sandy clay loam; SC <2 6.1 - 7.3 0.2 - 0.6 cemented <br /> surface, 0- 26-35: Clay loam, clay; CL <2 6.1 - 7.8 <0.06 pan, peres <br /> 2%slopes, 35-60: Indurated --- --- --- slowly <br /> 240. <br /> 5.1 Soil Boring Locations <br /> A total of four (4) soil borings were advanced on the Site, one (1) boring to a depth of 3.15 <br /> - feet, one (1) boring to 3.20 feet, one (1) boring to 6.90 feet and one (1) boring to a depth of <br /> 23.80 feet. The soil borings were used later for percolation test holes; the locations of the <br /> borings are indicated in Plate 1. <br /> 5.2 Soil Boring Dimensions <br /> The soil borings were 3.15, feet, 3.20 feet, 6.90 feet and 23.80 feet in depth, as noted above, <br /> and were 4 inches in diameter. <br /> 5.3 Soil Lithology Observed <br /> Generally, the soil encountered in the boring was not similar to the soils reported by the San <br /> Joaquin County Soil Survey for the area (USDA, 1992). The table below presents the soil log for <br /> the soil borings. Conditions were comparable in the shallower holes. <br /> Table 2. <br /> Soil Borin Lo . <br /> Depth Interval (ft) Soil Type Unified Soil Classification <br /> 0-2.0 Medium brown, sandy silt SM <br /> 2.0-23.80 Brown clay with some silt CL <br /> 902 Industrial Way-Lodi,CA 95240-209.367.3701 -Fax 209.369.4228 02007 Neil O.Anderson&Associates,Inc <br />