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s <br /> The results of soil borings conducted in 1985 and 1990 show that the site is underlain by <br /> Laguna alluvial deposits and cemented to partially-cemented Mehrten deposits. Laguna <br /> soils generally consist of silty sand, clayey,silt, and silty clay to approximately 10 feet <br /> bgs. The Mehrten soils generally include clay/claystone, silt/siltstone, sand/sandstone, <br /> and conglomerates. <br /> Soil samples obtained during the soil boring investigations have indicated hydraulic <br /> conductivities ranging from 1 x 10"3 cm/sec for sands and sandstones to 1 x 10" cm/sec <br /> clays and claystones. <br /> 2.3 Surface Water <br /> The site is about 1.5 miles south of the Calaveras River and 4 miles east of Mormon <br /> Slough. Surface water drainage from the site flows into a system of creeks that meander <br /> toward the southwest, eventually emptying into Mormon Slough. Mormon Slough drains <br /> into the Calaveras River, a tributary of the San Joaquin River. The San Joaquin River <br /> discharges into the Sacramento-San Joaquin River Delta northwest of Stockton. <br /> Foothill WQPS Rev Ldoc <br /> 2-2 <br />