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December 11, 2006 <br /> NOA Project Number: E06141A <br /> 4.5 Well Water Sample Collection, Handling, and Transportation <br /> The nitrate sample was collected in a sterile plastic container, the DBCP sample was collected in two <br /> sterile glass vials. The samples were then transported on ice and remained under chain of custody to <br /> FGL Environmental in Stockton. <br /> 4.6 Chain of Custody <br /> The Chain of Custody document has been included in the appendix of this report. <br /> 5.0 SOIL PROFILE AND GEOLOGIC INFORMATION <br /> The Site is depicted on the California Geological Survey Geologic Map of Cenotioic Deposits of the San <br /> Francisco-San Jose Quadrangle (1991) as within the CDMG Map 5A. The Modesto Formation consists <br /> of Arkosic alluvium forming Mokelumne River terraces and alluvial fan; chiefly sand with minor <br /> gravel and silt;probably glacial outwash (Plate 7). <br /> The surface and near surface soils located at the Site are reported by the San Joaquin County Soil Survcy <br /> to be composed of Veritas fine sandy loam, 0-2% slopes (Plate 8) (USDA, 1992). Table 3 presents <br /> some selected properties of these soils: <br /> Table 3. <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 /> Y Symbol pH (in/hr) fields <br /> Manteca 0-11 Fine sandy loam;SM <2 7.4-8.4 2.0-6.0 Severe: <br /> fine sandy 11-24 Sine sandy loam,loam,sandy <2 7.4-8.4 .6-2.0 cemented pan <br /> loam,0-2 loam;SM,SC-SM <br /> %slopes, <br /> 196 24-35 Indurated <2 <br /> 35-54 Cemented <2 <br /> 54-74 Stratified loamy sand to loam; <2 7.4-8.4 2.0-6.0 <br /> SM <br /> 7 <br />