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Blossom Road Subdivision Page 4 of 9 <br /> Our Project Number: LGS080511 <br /> April 30, 2008 <br /> /4.5 Chain of Custody <br /> The Chain of Custody document has been included in the appendix of this report. <br /> �S.0 SOIL PROFILE AND GEOLOGIC INFORMATION <br /> The site is depicted on the California Geologic Survey Map of the San Francisco-San Jose <br /> Quadrangle as within the Quaternary Modesto Formation (see Plate 5). The Quaternary <br /> Modesto Formation (undifferentiated) is unit of undifferentiated alluvial deposits, mainly arkosic, <br /> forming the toe of the Mokelumne alluvial fan, generally covered by 0.3 to 1.0 meters of <br /> Holocene intertidal deposits: <br /> fa The surface and near surface soils located at the Site are reported by the San Joaquin County <br /> Soil Survey to be composed of Egbert silty clay loam, Guard clay loam and Rodin sandy loam, <br /> all 0-2% slopes (see Plate 6) (USDA, 1992). The table below presents some selected properties <br /> of these soils: <br /> Table 1 <br /> San Joaquin County Soil Survey <br /> Elected Soil Properties of On-Site Soils. <br /> Soil Salinity Soil Perme- Septic tank <br /> Name Depth Unified Soil mmhos/ Reaction ability absorption <br /> and Map (in) Classification cm pH (in/hr) fields <br /> Symbol <br /> 0-8 Silty clay loam; CL <2 6.1-7.3 0.2-0.6 <br /> 8-19 Silty clay loam, clay loam, <2 6.1-7.8 0.06-0.2 Severe: peres <br /> Egbert, 153 clay; CL, CH slowly <br /> 19-60 Silty clay loam, clay loam, <2 6.1-8.4 0.06-0.2 <br /> clay; CL, CH <br /> Guard clay 0-15 Clay loam; CL <2 7.9-8.4 .2-.6 <br /> ✓ loam, wetness,Severperes <br /> drained, 0- <br /> 2% slopes, 15-72 Clay loam, sandy clay loam; <2 7.9-8.4 .06-.2 slowly <br /> 169 SC, CL <br /> 0-16 Clay loam; CL <2 7.4-8.4 0.2-0.6 <br /> 16-28 Loam, Clay loam; CL-ML, CL <2 7.4-8.4 0.2-0.6 Severe: <br /> Rioblancha <br /> 28-39 Sand loam, loam, silt loam; <2 7.9-8.4 0.6-2.0 cemented pan, <br /> 226 y � peres slowly <br /> SC-SM, SM, CL-ML, ML <br /> 39-80 Cemented --- --- --- <br /> Note:The table descriptions do not necessarily reflect site-specific soil properties. <br /> * See description of the map unit for composition and behavior characteristics of the map unit <br /> f� <br /> 902 Industrial Way-Lodi,CA 95240•209.367.3701 -Fax 209.369.4228 02008 Neil 0, 4nderson&Associates,Inc <br />