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i There is a very slight westward slope to the property. Major topographic features include the following man- made structures: The Stockton Diverting Canal 1.5 miles west on Cherokee Lane, Highway 99 1.0 mile west, Oakmoor Golf Course (private) 1.5 miles west. The Stockton Terminal and Eastern Railroad 1.0 mile to the south. The only significant natural features are the Calaveras River .75 mile to the north and Mormon Slough 3.5 miles to the south. 2. Geology The Central Valley of California has been formed by the filling of a large structural trough or downwarp in the bedrock formations. The trough or downwarp is situated between the Sierra Nevada Mountains on the east and the Coast Range Mountains on the west. Both of these mountain ranges were formed by an uplift which occurred primarily during the Jurassic and Cretaceous periods. The sediment which fills the trough originated as erosion debris from the adjacent mountains and foothills. The trough which underlies the valley is asymmetrical, with the greatest depth of sediment near the western margin. Beneath the sediment, the bedrock complex is composed of metamorphos�.s marine, sediments, similar to those found in the foothilis of the western Sierra Nevada and eastern coast ranges. The sediments in the trough deposited prior to the Med-Tertiary time were in a marine environment. Changes in the sea level and subsequent uplifts resulted in later deposition of sediments in a continental environment. These continental sediments extend to the existing surface in the Stockton area. 3. Soils The Soils of San Joaquin County designate soils on the property as Capay Clay Loam and Landlow Adobe Clay. Both soils are essentially basin soils with Storie Ratings in the 30-50 range, primarily because of low nutrient levels and imperfect drainage. The Open Space/Conservation Element designates the soil as Class III, considered to be a prime soil, due to agricultural usage. The surface silty clay has a moderately high plasticity and a moderately high swell potential. In general, this stratum is in a medium -stiff condition, except where disturbed by recent cultivation. The average thickness of the surface stratum is approximately three feet; however, variations in the actual thickness do exist. Beneath this stratmn are strata of primarily silty materials. These stomata vary from clayey silts to silty sands and, in all cases, the deeper soils appeared to have less plasticity than the surface soil. The under- lying silts ara, in general, in a medium -stiff to stiff condition and the 9i:anular materials, such as clayey -3--