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�1 <br /> hKL KLEINFELDER <br /> TABLE 3 <br /> REGIONAL GEOLOGY AND HYDROGEOLOGY <br /> REGIONAL The site is in the western part of the Great Valley Geomorphic Province of <br /> GEOLOGY California. The valley is 400 miles long, 50 miles wide, and comprises <br /> (California Division approximately 20,000 square miles. The valley has been filled with a thick <br /> of Mines and sequence of marine and nonmarine sediments from the late Jurassic to <br /> Geology, Regional Holocene. The uppermost strata of the Great Valley represents, for the <br /> Geologic Map 5A, most part, the alluvial, flood, and delta plains of two major rivers <br /> San Francisco-San (Sacramento and San Joaquin Rivers) and their tributaries. <br /> Jose Quadrangle, <br /> 1990,scale 1 inch = The valley deposits are derived from the Coast Ranges to the west and the <br /> 4 miles) Sierra Nevada to the east. Granitic and metamorphic rocks outcrop along <br /> the eastern and southeastern flanks of the valley. Marine sedimentary <br /> rocks outcrop along most of the western, southwestern, southern, and <br /> southeastern flanks; and volcanic rocks and deposits outcrop along the <br /> northeastern flanks of the valley. The valley geomorphology includes <br /> dissected uplands, low alluvial plains and fans, river flood plains and <br /> channels, and overflow lands and lake bottoms. <br /> The site is underlain by arkosic alluvium of the Quaternary age Modesto <br /> Formation. <br /> DEPTH TO According to the San Joaquin County, "Groundwater Flood Control and <br /> REGIONAL Water Conservation District, Spring, 1998, Groundwater Report", <br /> GROUNDWATER groundwater is at an approximate elevation of 5 feet above mean sea level. <br /> AND DIRECTION The elevation at the site is 10 feet above mean sea level, therefore, <br /> OF ANTICIPATED groundwater is anticipated to occur at a depth of approximately 5 feet. The <br /> FLOW direction of groundwater flow is to the south and west. General <br /> groundwater depth may be influenced by local pumping, rainfall, and <br /> irrigation patterns. Evaluation of such factors is beyond the scope of this <br /> assessment. <br /> i <br /> i <br /> 20-1415-17.P0112000R542 Page 6 of 20 <br /> Copyright 2000 Kleinfelder,Inc. June 27,2000 <br />