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GENERAL GEOLOGIC AND SOIL.CONDITIONS <br /> The subject site lies near the center of the Valley Geomorphic Province of California. This <br /> province is characterized by extensive alluvial deposits from the Sierra Nevada Mountain <br /> Range which border the Great Valley to the east. The geology of the area consists of broad, <br /> coalescing alluvial plains that have been dissected by streams vahich drain the Sierra Nevada <br /> Mountain Range. These recent alluvial plains are underlain by older alluvial deposits of <br /> Tertiary and Quaternary age.. <br /> The stratigraphic sequence in the Central Valley area consists of a pre-Tertiary basement <br /> complex overlain by consolidated continental and marine sediments, Cretaceous of Pliocene in <br /> age, unconsolidated deposits comprise the upper.600 to 800 feet of the stratigraphic sequence <br /> beneath the subject site. <br /> Soils Profile <br /> Based on the exploratory soil borings, soils beneaththesite appear to be composed primarily <br /> of Sandy Silts and Silty Sands . The soils observed in our exploratory soil borings are typical <br /> of young alluvium and flood-basin deposits. <br /> Aeg neral description of the soil materials encountered is presented below. <br /> A. Brawn Silty Sand (SM) <br /> This is the surface soil. This soil was encountered in the following borings, at the <br /> following depths: <br /> Boring ... Dlenth <br /> AJ <br /> r, P-1 00 -4.5% 17.0' -24.0' ' <br /> P-2 0.0' - 5.0', 12.0'— 15.5' <br /> B. Tan Sandy Silt (ML) <br /> dF <br /> This soil is described as dense. This soil would be described by some as"hard pan". <br /> This soil was encountered in the following borings at the following depths: <br /> Bp <br /> orrna D. Wt-h <br /> P-1 4{5 7.0', 12.0' <br /> P-2 5.0' - 7.0' <br /> (2) <br />