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s <br /> � �- k4 KLIEINFELDER <br /> 2 SITE SETTING <br /> 2.1 SITE. LOCATION <br /> The site is located at 21.00 Sanguinetti Lane at the southeast corner of the intersection of <br /> Sanguirnetti Lane and Stewart Street. The location of the former UST is located just southeast of <br /> the main building at the Delta Sign facility (Plate 1). <br /> 2.2 CURRENT SITE USE AND VICINITY CHARACTERISTICS <br /> The subject site is currently being utilized by Delta Sign as the primary property for the operation <br /> and maintenance of said business. The site consists of a large warehouse/manufacturing and <br /> office building and associated parking. The site is overlain with concrete, except where the <br /> former underground storage tank (UST) was located, which is backfilled with mounded dirt. To <br /> the north of the subject property directly across Stewart Street is a vacant lot. To the west across <br /> Sanguinetti Lane is a small park and residential housing, and to the south and east is industrial <br /> businesses. <br /> 2.3 GEOLOGY AND HYDROGEOLOGY <br /> The site lies within the Great Valley Geomorphic Province of California. The valley is <br /> approximately 400 miles long and averages about 50 ,Hiles wide, and comprises about 20,000 <br /> square miles. The valley has been filled with a thick sequence of marine and non-marine <br /> sediments from the late .lurassic to Holocene. The uppermost strata of the Great Valley <br /> represents, for the most part, the alluvial, flood, and delta plains of two major rivers (Sacramento <br /> 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 the <br /> east. Granitic and metarnorphic rocks outcrop along the eastern and southeastern flanks of the <br /> valley. Marine sedimentary rocks outcrop along most of the western, southwestern, southern, <br /> and southeastern flanks; and volcanic rocks and deposits outcrop along the northeastern flanks of,, <br /> the valley. The valley geomorphology includes dissected uplands, low alluvial plains and fans, <br /> river flood plains and channels, and overflow lands and lake bottoms. <br /> 20-2864-02.17-0312019Rb32 Pagc 3 of 12 <br /> 0 1998, Kleinfelder, Inc. January 14, 1999 <br />