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MOORE & TABER NORTHERN CALIFORNIA <br /> CONSULTING ENGINEERS AND GEOLOGISTS <br /> -2- <br /> There is no implication that three borings on a site this size <br /> can be construed as representing either the range of conditions <br /> or the most critical conditions at the site. They can , however , <br /> provide (limited) basis for feasibility and preliminary economic <br /> evaluations. <br /> The site is planar, sloping gently west (+4-5 ft drop <br /> per 3700-ft) . The surface is presently vacant and had recently <br /> been cultivated to +12 inches depth. Current/previous use <br /> is agricultural and was likely subjected to surficial soils <br /> redistribution by land-levelling. <br /> No evidence of pre-existing surface or subsurface <br /> structures or fill was observed although their presence cannot <br /> be precluded. <br /> Exploration and Testing <br /> Information on subsurface materials and conditions <br /> was obtained from each of the requested three sampled test <br /> borings to depth 16-22 ft. "Undisturbed" samples were recovered <br /> from the borings by means of 2 . 0-inch OD "standard penetration" <br /> (ASTM D 1586) and 2. 5-inch ID "thin-wall" samplers advanced <br /> with standard 350 ft-lb striking force to provide a field <br />