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_R r) n <br /> F_j March 16, 2006 <br /> NOA Project Number: E0601 1A <br /> Page 5 <br /> 4.2 Potential Ground Water Contamination Issues <br /> Identifying potential ground-water contamination sources was not part of the scope of work for the <br /> soil suitability study. <br /> E <br /> Potential ground-water contamination can occur from a number of sources which often include leaky <br /> - underground storage tanks, agricultural activities, dairies, septic systems, and storm water infiltration. <br /> Any past agricultural activities and the present use of septic systems in the area should be considered <br /> potential ground-water contamination sources.According to staff at the EHD, the area <br /> encompassing the subject property has been identified as problematic due to high nitrate <br /> F!' concentration in shallow groundwater. <br /> 4.3 Water Sample Locatio <br /> According to Grace Segura no wells x-st on the subject property. No well permits were found for <br /> the Site during File Revie n ch,8, 2006. <br /> 4.4 Water Sample Constituents <br /> No water sample was collected or analyzed as part of this investigation. <br /> F! 5.0 SOIL PROFILE AND GEOLOGIC INFORMATION <br /> The Site is depicted on the Preliminary Geologic Map of the San Francisco - San Jose Cenozoic <br /> Deposits of the Tracy Quadrangle, California (1991),is within a region of Quaternary Fan deposits. <br /> The unit is composed of gravel, sand silt and clay (Plate 3). <br /> The surface and near surface soils located at the Site are reported by the San Joaquin County Soil Survey <br /> flito be composed of the Capay clay, 0-2% slopes (Plate 4) (USDA, 1992). The following table presents <br /> some selected properties of the soils. <br /> F1 <br /> F, <br /> F ' <br /> 5 <br />