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%00 N.00 <br /> November 8, 2004 <br /> NOA Project Number: E0401 10A <br /> Ll/4.6 Well Water Sample Collection, Handling, and Transportation <br /> Y The samples were collected in a clean plastic container, then decanted into clean,glass vials. The <br /> Lsamples were then transported on ice and remanded under chain of custody to Precision Enviro- <br /> Tech, Stockton. <br /> k,"4.7 Chain of Custody <br /> LThe Chain of Custody document has been included in the appendix of this report. <br /> s�5.0 SOIL PROFILE AND GEOLOGIC INFORMATION <br /> The Site is depicted on the USGS Preliminary Geologic Map of Cenozoic Depotitr of the BellotaQuadrangle <br /> (1979) as within the middle member of the Quaternary Riverbank Formation. This map unit <br /> L consists of arkosic alluvium fotining Mokelumne River terraces and alluvial fan;chiefly sand; <br /> probably glacial outwash (Plate 7). <br /> The surface and near surface soils located at the Site are reported by the San Joaquin County Soil Survey <br /> to be composed of Bruella sandy loam,hard substratum, 0 to 2 percent slopes, and San Joaquin <br /> loam, thick surface, 0 to 2 percent slopes (Plate 8) (USDA, 1992). Table 3 presents some selected <br /> Lproperties of these soils: <br /> Table 3. <br /> —San Joaquin County Soil Survey— <br /> Selected Soil Properties of On-Site Soils. <br /> lr <br /> Soil Name Dept Unified Soil Classification Salinity Soil Perme- Septic tank <br /> and Map h (in) mmhos/cm Reaction ability absorption <br /> L Symbol pH (in/hr) fields <br /> Flmella sandy 0-8: Sandy loam,SC-SM,SM. <2 6.1-7.3 2.0-6.0 Severe_p�res <br /> loam,hard 8-42: Sandy loam,sandy clay loam, <2 6.1-7.3 0.2-0.6 slowly <br /> ` substratum,0- SC <br /> 2%sloEaq <br /> es11242-60: Sandy clay loam,sandy clay,SC <2 6.1-7.3 0.06-0.2 <br /> 0-12: Loam,CLML,ML <2 5.6-6.5 0.6-2.0 Severe: <br /> 12-26: Sandy day loam,SC <Z 6.1-7.3 0.2-0.G cemented <br /> 26-35: Clay loam,clay,CL <2 6.1-7.8 <0.06 pan,peres <br /> 35-60: Indurated -- -- --- <br /> Note:The table descriptions do not necessarily reflect site-specific soil properties. <br /> r <br /> V <br /> 6 <br />