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forth by regulatory agencies. <br /> Description of Environmental Setting <br /> The Traina project site is located in an area generally characterized by general <br /> industrial, agricultural use and mining operations. The land is presently in agricultural <br /> production as an apricot orchard. The property is designated as open space/resource <br /> conservation (OS/RC) by the San Joaquin County General Plan and is zoned AG-40. <br /> The vested Tracy Rock Plant is located immediately to the west of the site and is <br /> acknowledged by the State with a MRZ designation. The adjacent land uses to the site <br /> include aggregate mining to the north, aggregate mining and processing to the west, <br /> orchard to the east, and row crops to the south. Two existing residences are located on <br /> the agricultural property to the south. Also located in the vicinity is the Tracy Materials <br /> Recovery and Transfer Facility, the Tracy Municipal Airport, Triple E Produce and <br /> Esfresh packing plants, Ameron Pipe, the Banta Carbona Irrigation District office, and <br /> RoLab Rubber company. <br /> Geology <br /> The project site is located at the western margin of the Great Valley physiographic <br /> province, at the eastern flank of the Diablo Range, just south of Tracy. The valley is <br /> filled with Tertiary and Quaternary age clastic sediments to depths of greater than <br /> 20,000 feet. Streams flowing northeastward from the Diablo Range have developed a <br /> succession of lobate-shaped alluvial fans at the base of the mountains. Sediments <br /> deposited as recent alluvial fans at the mouth of Corral Hollow Creek, Lone Tree Creek, <br /> Hospital Creek, and others are made up of the San Luis Ranch Alluvium and the Los <br /> Banos Alluvium, which contain reworked sediments derived from older alluvial fan <br /> deposits. The alluvial fans overlie a thick sequence of clastic sediments of the Pliocene <br /> and Pleistocene age Tulare Formation. A thin veneer of Holocene-aged Patterson <br /> Alluvium overlies these alluvial fans. <br /> The project site lies within alluvial fan deposits of Corral Hollow Creek in an area <br /> commonly known for sand and gravel deposits. In general, the subsurface conditions <br /> can be characterized as interstratified sands, clays and gravels. The drilling results <br /> 3 <br />