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' k" KLEINFELDER 2 SITE SETTING 2.1 Site Location - The site is located at 639 West Clay Street in Stockton, California The site is located on the north side of a cul-de-sac just east of U S Interstate 5 The property is described by San Joaquin County Assessor's Parcel Number 147-071-10 The West Clay Properties commercial site is hereafter referred to as the "project site " The project site is located on the Stockton West Quadrangle in Township 1 North, Range 6, East of the Mount Diablo Baseline and Meridian According to the U S G S 1968 Stockton West Quadrangle map (photo-revised in 1987) the project site is located in a level area approximately 80 feet above mean sea level There are no significant topography changes in the general vicinity The map indicated that area surrounding the site includes residential and commercial property 2.2 Current Site Use and Vicinity Characteristics The project site is currently being utilized by DSS Construction Company as both office and equipment storage space It is a relatively flat site with the south eastern portion asphalted Equipment used for construction is stored on the south western portion of the site and the office building is located in the southwest corner 2.3 Geology and Hydrogeology The site lies in the Great Valle Geomorphic Province of California The valley is about 400 miles long (north-south), averages about 50 miles wide (east-west), and comprises approximately 20,000 square miles The valley has been filled with a thick sequence of marine and non-marine sediments from the late Jurrassic to the Holocene times 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 geomorphology includes dissected uplands, low alluvial plains and fans, river flood plains and channels, and overflow lands and lake bottoms The site is located on the dissected uplands and low alluvial plains of the northern portion of the San Joaquin Valley of the Great Central Valley The San Joaquin Valley is characterized by deep accumulations of Cretaceous and Quaternary Age sediments and include both marine and continental rocks and deposits Regional groundwater flow is to the east-southeast in the vicinity of the site away from the intersection of French Camp Slough and the Port of Stockton ETN and PVC194 Copyright 1994 Kletnfelder Inc Page 3 of 11