ARCHIVED REPORTS XR0011675 - Laserfiche WebLink

Home Browse Search

' KLEINFELDER ' Table 2 summarizes information obtained from the review of area maps Table 2 ' Physical Setting U.S.G S Topographic Stockton West, California 75 minute quadrangle, dated Quadrangle Map 1968, photorevised 1976 U.S G.S Map The site is vacant A boat dock is adjacent to the south side Description of the site MUNGER MAP, 1994- Page W-18, no oil and gas wells or plugged and abandoned ' Oil And Gas Fields dry holes noted on site ' 3.2 GEOLOGY AND HYDROGCOLOGY t The site lies within the Great Valley Geomorphic Province of California The valley is about 400 miles long and averages about 50 miles wide, and comprises about 20,000 square miles The valley has been filled with a thick sequence of marine and non-marine sediments from the late MJurassic to Holocene The uppermost strata of the Great Valley represents, for the most part, the alluvial, flood, and delta plains of two major rivers (Sacramento and San Joaquin Rivers) and ' their tributaries The valley deposits are derived from the Coast Ranges to the west and the Sierra Nevada to the east Granitic and metamorphic rocks outcrop along the eastern and southeastern flanks of the valley Marine sedimentary rocks outciop along most of the western, southwestern, southern, and southeastern flanks, and volcanic rocks and deposits outcrop along the northeastern flanks of ' the valley The valley geomorphology includes dissected uplands, low alluvial plains and fans, river flood plains and channels, and ovei flow lands and lake bottoms ' The site itself is located In the northern central portion of the Central Valley in an area characterized by alluvial and deltaic fan deposits The majority of the native sediments include continental rocks and deposits of a heterogeneous mix of poorly sorted clay, silt, sand, and ' gravel Some beds of claystone, siltstone, sandstone, and conglomerate can also be present ' 20-1129-30/2017R241 Page 4 of 16 0 1997 Kleinfelder Inc. July 14, 1997