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June 16, 2004 <br /> NOA Project Number: E04069A <br /> No ground water was encountered by the staff of Neil O. Anderson & Associates, Inc. during <br /> drilling to a depth of 3.2 feet on June 8, 2004. <br /> 4.3 Potential Ground Water Contamination Issues <br /> Identifying potential ground water contamination sources was not part of the scope of work <br /> for the soil suitability study. Potential ground water contamination can occur from a number <br /> of sources which often include leaky underground storage tanks, agricultural activities, dairies, <br /> septic systems, and storm water infiltration. Any agricultural activities, dairies, or use of <br /> septic systems in the area should be considered potential ground water contamination sources. <br /> A wastewater treatment facilitl is located i&UWedij1ely south and east of the Site. A <br /> groundwater monrtorm we associated with the treatme t f <br /> &,Qb1Med adjacent to^ <br /> the eastern oundary of the Site. <br /> 4.4 Water Sample Location <br /> No water sample was collected for nitrate and DBCP analysis because there are currently no <br /> wells on the Site. <br /> 5.0 SOIL PROFILE AND GEOLOGIC INFORMATION <br /> 5.1 Geology <br /> The Site is depicted on the USGS Preliminary Map Showing Quaternary Deposits of the Lodi <br /> Quadrangle, California (Marchand and Atwater, 1979) as within a region of Holocene <br /> alluvium from channel, levee, and floodplain deposits (Plate 7). This map unit is primarily <br /> composed of silt and clay with fine sand. <br /> 5.2 Soil Properties in the Vicinity <br /> The surface and near surface soils located at the Site are reported by the San Joaquin County <br /> Soil Survey to be composed of Columbia fine sandy loam, channeled, partially drained, 0 to 2 <br /> percent slopes, frequently flooded (Plate 8) (USDA, 1992). Table 2 presents some selected <br /> properties of this soil: <br /> 5 <br />