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! October 31, 2005 NOA Project Number: E05137A Table 2. San Joaquin County Soil Survey Selected Soil Properties of On-Site Soils. Soil Name Depth I Unified Soil Classification Salinity Soil Perme- Septic tank and Map (in) mmhos/cm Reaction ability absorption Symbol pH (in/hr) fields _ Montpellier- 0-20: Course sandy loam;SM <2 5.6-7.3 2.0-6.0 Severe:peres Cometa 20-43: Sandy clay loam;SC <2 5.6-7.3 0.2-0.6 slowly complex,5- 43-55: Course sandy loam;SM 6.6-7.3 0.2-0.6 8%slopes, 55-60: Sandy loam,coarse sandy loam; <2 6.1 -7.3 <0.06 -- 200. SM T0okay fine 0-19: Fine sandy loam;SM <2 6.1-7.8 2.0-6.0 Severe:peres y sand loam, 19-45: Fine sandy loam,sandy loam; <2 6.1-7.8 2.0-6.0 slowly - _ o 2/o sloes Sm M 256 45-60: Fine sandy loam,sandy loam, <2 6.1-8.4 2.0-6.0 j coarse sandy loam;SM 1 Note:The table descriptions do not necessarily reflect site-specific soil properties. 5.1 Soil Boring Locations A total of six soil borings were advanced on the Site, to depths of approximately three to three and a half feet and twenty-five feet. The soil borings were used later for percolation test holes; the locations of the borings are indicated in Plate 1. i 5.2 Soil Boring Dimensions The soil borings were approximately 3.5 and 25 feet deep, as noted above,and were four inches in 1 diameter. ] 5.3 Soil Lithology Observed Generally, the soil encountered in the boring is similar to the soils reported by the San Joaquin County Soil Survey for the area (USDA, 1992). Tables 3, 4 and 5 present a soil log for the soil F'; borings located on Parcels 1, 2, and 3. Conditions were comparable in the other borings. Table 3. F11 Soil Borin Lo for Dee Bori on Parcel 1. Depth Interval(ft) Soil Type Unified Soil Classification n 0-25' - Light brown,si sand SM F1 6 E +1 i1 1