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December 16,2003 <br /> Job Number: LG03-304 <br /> Page 7 <br /> low <br /> the EPA believes that given present technology and resources, this is the lowest level to which <br /> water systems can reasonably be required to remove this contaminant should it occur in drinking <br /> water. <br /> bw 5.0 SOIL PROFILE AND GEOLOGIC INFORMATION <br /> 5.1 Geology <br /> The surface geology at the Site is shown on Marchand and Barow's (1979) geologic map and is <br /> composed of arkosic alluvium forming river terraces and alluvial fans. This material is reported <br /> to be composed of chiefly sands formed from glacial outwash (Plate 6). Though the geologic <br /> report indicated this wide spread formation contains chiefly sand, sandy mixtures were actually <br /> encountered during onsite drilling of the percolation tests. <br /> 5.2 Soil Properties in the Vicinity <br /> The surface and near surface soils located at Site are reported to be composed of Burella sandy <br /> loam, 0 to 2 percent slopes and the San Joaquin loam, 0 to 2 percent slopes(Plate 7) (USDA, <br /> �- 1992). Table 2 presents some selected properties of this soil and those in the vicinity of the Site. <br /> kvm <br /> BOE RSO <br /> P 1 <br /> v s � <br /> z <br /> o � <br /> P <br />