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V KLE/NFELDER <br /> i Brigh I Peupl& Right!ttthdMn& <br /> a floodplain for the Duck River, Calaveras River, and Potter Creek. The Sierra foothills lie to <br /> the south of the nursery. Numerous drainages and intermittent streams are shown on the map <br /> to be flowing out of the hills towards the property. One stream exits the hills to the southeast <br /> of Norman's Nursery flowing northwest. Where the stream encounters the north-south <br /> centerline of Section 8 , it bends towards the north where it later flows into Potter Creek. Based <br /> on the shape of the primary topographic contour line near the word " Escalon" in Escalon <br /> Bellota Road , it appears that a portion of the stream may also split into a drainage that flows <br /> across the Norman's Nursery property offsite to the northwest. The nursery site has a <br /> moderate topographic relief, sloping to the north and west. <br /> Plate 2 is the base map for Norman's Nursery. The property was surveyed in February 1998 <br /> by Thompson-Hysell Engineers of Modesto, California. More recent expansion of the <br /> nursery's operations has been added to the surveyed map. <br /> 2 .4 . 2 Regional Geology <br /> The site lies within the eastern edge of the Great Valley Geomorphic Province of California . <br /> The valley is approximately 400 miles long and averages about 50 miles wide, and comprises <br /> about 20 , 000 square miles . The valley has been filled with a thick sequence of marine and <br /> non-marine sediments from the late Jurassic to Holocene . The uppermost strata of the Great <br /> Valley represent, for the most part, the alluvial , flood , and delta plains of two major rivers <br /> (Sacramento and San Joaquin Rivers) and their tributaries. <br /> The valley deposits are derived from the Coast Ranges to the west and the Sierra Nevada to <br /> the east. Granitic and metamorphic rocks outcrop along the eastern and southeastern flanks <br /> of the valley. Marine sedimentary rocks outcrop along most of the western , southwestern, <br /> southern, and southeastern flanks ; and volcanic rocks and deposits outcrop along the <br /> northeastern flanks of the valley. The valley geomorphology includes dissected uplands, low <br /> alluvial plains and fans, river flood plains and channels, and overflow lands and lake bottoms. <br /> 2.4. 3 Site Geology <br /> According to the United States Department of Agriculture Soil Conservation Service "Soil <br /> Survey of San Joaquin County, California" dated October 1990, the soil types in the area of <br /> the nursery can be summarized as follows: <br /> 117226.E02/ST013R0176 Page 4 of 40 January 31 , 2013 <br /> Copyright 2013 Kleinfelder <br />