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i Surface&Subsurface Contamination Report Page 9 Sandhu Project Project No. 597.1 February 12,2009 2.0 SITE DESCRIPTION 2.1 Property Locationa d Description The Property consists of a tw contiguous agricultural parcels that combined, have a total area of about 2 S Cres. The Property occupies much of Section 34 of T2S, R6E, MDB&M as as small portions of two adjacent sections. It is situated on the east side of Kasson Road and is bounded by Kasson Road and San Joaquin River to the east and west, and by the Lift Canal, and MacChesney Road to the north and south. Although the Property has a Tracy address, it is actually in a rural area about 6 miles southeast of Tracy. The area is shown on the United States Geological Survey topographic map, Vernalis California Quadrangle, California, 7.5-minute series. 2.2 Geologic and Hydrologic Conditions Soils & Geology The Central valley is notable for thick sedimentary deposits which range in age from recent to Eocene and older and which may extend to depths of more than 1 20,000 feet. These sediments are derived from the Sierra range to the east and the Coast Ranges to the west. The shallow sediments are known as the Tulare Formation. A widespread clay deposit, the Corcoran Clay (or E-clay), divides the upper and lower members of the Tulare Formation. The Tulare sediments lying above the Corcoran Clay are entirely Pleistocene in age. The Corcoran Clay is about 60 feet thick in the Vernalis-New Jerusalem area and it serves as an effective aquitard. It lies approximately 150 to 200 feet below the ground surface. It is believed that most major irrigation and water supply wells are completed below the Corcoran Clay zone. The USDA Soils Conservation Service Soil Survey of San Joaquin Count California, October 1992 soil survey report classifies soil in San Joaquin County. The Survey generally classifies the soils in this area of as part of the Columbia- Temple Association; deep, imperfectly drained soils of the San Joaquin River flood plain. According to information in the assessor's records, the specific on- site soil types include Capay clay, 0 to 2% slopes; Columbia fine sandy loam, 0 to 2% slopes; Vernalis clay loam, 0 to 2% slopes, and Willows clay. Hydrology Evaluation of the site's geologic and hydrologic conditions included a review of the surface soils and topography, a review of groundwater monitoring reports for nearby known contamination sites, a review of the USGS Topographic Map, 2937 Veneman Ave.,#B240 Geo-Phase Environmental Inc. Phone: (209)569-0293 Modesto, CA 95356 Fax: (209)569-0295