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July 24,2003 i <br /> Job Number'LG03-206 <br /> ' Page 4 <br /> Table 2. <br /> Summary of Available Ground Water Information. <br /> Date,Source Groundwater Depth Notes <br /> Two borings: one, 3-fe'et"shallow". Not encountered None . . <br /> percolation test boring and one."deep'.., i <br /> 12.65-foot percolation test boring. Neil <br /> O.Anderson&Associates,Inc.June 24, <br /> 2003. , <br /> Fall 1998,San Joaquin County Flood About 75 feet About,25 ft/mile flowing south. <br /> Control and Water Conservation-District <br /> map. <br /> ' Spring 1999, San Joaquin County About 60 feet. About 25 ft/mile flowing south. <br /> Flood Control and Water Conservation <br /> District. <br /> There are no known water wells located on theproperty-S'nce there <br /> are no wells on the site,no <br /> groundwater samples were analyzed for nitrate or other'constituents.. It is not necessary for the <br /> nitrate loading analysis to have a ground water sample; However, they are an indicator'of the <br /> water quality.for the depth interval of the well inlets or screens from which,water is,pumped: A_ <br /> r water sample test was not a requirement_ of ERD for approval'of this site. <br /> 5.0 GEOLOGY, SOILS,AND PERCOLATION TEST <br /> The surface geology at the site is shown o ' <br /> g gy n Marchland and Bartow's (1979) map which is <br /> composed of arkosic alluvium forming'Mokelumne River terraces and alluvial fans, chiefly sand <br /> With minor gravel and silt(Plate 6). The alluvium is probably.from glacial outwash. Alluvium <br /> can also contain mixtures .of sand, silt, and clay, deposited by fluvial processes. <br /> The surface and near surface soils located at the siteare.reported to be composed of the Tokay <br /> fine'sandy loam (Plate 7) (USDA,.1993). .The Tokay fine sandyloam is described as a very deep, <br /> well drained,nearly level soil on low fan terraces. It formed in alluvium derived from.granitic <br /> rock sources. Permeability is moderately rapid in the Tokay soil. Table 3 presents some selected <br /> properties of the soil types located on the property andthe surrounding area, <br /> t <br /> r <br />