Laserfiche WebLink
October 11,2005 <br /> NOA Project Number: E05111B <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 KY-IiJ <br /> sterile glass vials. The samples were then transported on ice and remained under chain of custody to <br /> Precision Enviro-Tech in Stockton. <br /> 4.6 Chain of Custody <br /> The Chain of Custody document has been included in the appendix of this report. C�• �J <br /> 5.0 SOIL PROFILE AND GEOLOGIC INFORMATION <br /> The Site is depicted on the California Geological Survey Geologic Map of Cenozoic Deposits of the San <br /> Francisco-San Jose Quadrangle(199 1) 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 Survey <br /> to be composed of Galt and Jacktone clay,both 0-2% slopes (Plate 8) (USDA, 1992). Table 3 <br /> presents 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 /> Symbol pH (in/hr) fields <br /> Galt clay, 0-25 Clay,CL-CH <2 6.6-7.3 .06-.2 Severe: <br /> 0-2% 25-34 Clay,silty clay,CL-CH <2 6.6-8.4 .06-.2 cemented <br /> slopes,160 34-60 Cemented --- --- --- pan,peres <br /> slowly <br /> Jacktone 0-22 Clay,CL,CH <2 6.6-8.4 .06-.2 Cemented <br /> clay,0-2% 22-34 Clay loam,clay,silty clay,CL- <2 7.9-9.0 .06-.2 pan,peres <br /> slopes,180 CH slowly <br /> 34-37 Indurated --- --- --- <br /> 37-46 Loam,clay loam,CL-ML,CL <2 7.9-9.0 .2-.6 <br /> 46-60 1 Cemented --- I --- a --- <br /> Note:The table descriptions do not necessarily reflect site-specific soil properties. <br /> 6 '044 <br />