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June 14,2005 <br /> NOA Project Number: E05034A <br /> T <br /> Table 3. <br /> JGeologic Units. <br /> Symbol Name Unit <br /> Qm2f Quaternary Modesto Foothill-derived alluvial silt,clay,and minor sand forming <br /> Formation(upper member) terraces,upper fans and following distributaries <br /> across lower fans;abundant volcanic detritus <br /> Qm2fb Quaternary Modesto Foothill-derived basin and interdistributary overbank deposits; <br /> Formation(upper member) chiefly clay and silt <br /> Qml Quaternary Modesto Arkosic alluvium forming Mokelumne River terraces and alluvial <br /> Formation(lower member) fan;chiefly sand;probably glacial outwash <br /> Qr3 Quaternary Riverbank Arkosic alluvium forming Mokelumne River terraces and alluvial <br /> Formation(upper member fan;chief) sand;probably glacial outwash <br /> y/The surface and near surface soils located at the Site are reported by the San Joaquin County Soil Survey <br /> to be composed of Devries sandy loam,drained, 0-2% slopes,Kingdon fine sandy loam, 0-2% <br /> slopes, San Joaquin loam, 0-2% slopes, San Joaquin loam, thick surface, 0-2% slopes and Tokay fine <br /> sandy loam, 0-2% slopes (Plate 8) (USDA, 1992). Table 4 presents some selected properties of <br /> these soils: <br /> Table 4. <br /> / San Joaquin County Soil Survey <br /> ✓ Selected Soil Properties of On-Site Soils. <br /> Soil Name Depth Unified Soil Classification Salinity Soil Terme- Septic tank <br /> and Map (in) mmhos/cm Reaction ability absorption <br /> Symbol pH (in/ht) fields <br /> Devries 0-13: Sandy loam;SM <2 6.6-8.4 2.0-6.0 Severe: <br /> ,-� sandy loam, 13-28: Sandy loam,fine sandy loam; <2 6.6- 8.4 2.0-6.0 cemented <br /> drained, SM pan <br /> 0-2% 28-80: Indurated --- -- --- <br /> slopes,149. <br /> Kingdon 0-5: Fine sandy loam;SM <2 5.6-7.3 _ 2.0-6.0 Moderate: <br /> fine sandy 5-14: Fine sandy loam;SM <2 6.1 -7.3 2.0-6.0 wetness, <br /> loam,0-2% 14-28: Sandy loam,fine sandy loam; <2 6.1 -7.3 2,0-6.0 peres slowly. <br /> slopes,189. SM <br /> 28-42: Fine sandy loam,loam;SC- <2 6.1 -7.8 0.6-2.0 <br /> SM,CL-ML <br /> 42-61: Fine sandy loam,sandy loam, <2 6,6-8.4 2.0-6.0 <br /> coarse sandy loam;SM <br /> 7 <br /> Fj <br />