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14 October 2015 " AGE Project No. 15-3556 Page 5 of 14 been designated the Sacramento and San Joaquin Valleys, respectively. The subject property is located with the San Joaquin Valley. LHydrology The subject property and surrounding area lie within the San Joaquin Valley Groundwater Basin, Tracy Subbasin (5-22.15). This subbasin is defined by the areal extent of unconsolidated to semiconsolidated sedimentary deposits Lthat are bounded by the Diablo Range on the west, the Mokelumne and San Joaquin Rivers on the north, the San Joaquin River to the east, and the San Joaquin-Stanislaus County line to the south. The Tracy Subbasin is located adjacent to the Eastern San Joaquin Subbasin on the east and the Delta- Mendota Subbasin on the south. All of the above mentioned subbsains are located within the larger San Joaquin Valley Groundwater Basin. The Tracy Subbasin also lies to the south of the Sacramento Valley Groundwater Basin, Solano Subbasin. The Tracy Subbasin is comprised of continental deposits of Late Tertiary to Quaternary age. These deposits include the Tulare Formation, Older Alluvium, Flood Basin Deposits, and Younger Alluvium. The cumulative thickness of these deposits increased from a few hundred feet near the Coast range foothills on the wet to about 3,000 feet along the eastern margin of the basin. Groundwater depth and flow direction was obtained from the California Department of Water Resources Groundwater Information Center Interactive Map. Groundwater contours approximately 4 miles northeast of the subject property indicate that groundwater is found at an approximate depth of 20 feet below surface grade and flows to the general northeast. AGE assumes that groundwater depths and flow direction beneath the subject property are 1.. similar. -........ ............ - Topography The property is located at an elevation of approximately 0 feet above mean L, sea level (MSL), in an area of low topographic relief. Regional slope of the area is toward the general north. _._..- — --- -- ` Surface Soils EDR provides a report listing dominant soil composition in the general area of L the subject property based on information from the United States Department of Agriculture's Soil Conservation Service STATSGO (State Soil Geographic Database) soil maps. Soil surface texture at the subject property consists of Peltier soil, a mucky clay loam in the Class C Hydrogeologic Group which includes slow infiltration rates. Corrosion potential of this soil for uncoated steel is high. Surface Water One drainage canal is located in the western region of the property. Features Flood Zone The EDR database report shows that the subject property is located within a 100-year Flood Zone. This data, available in select counties across the country, was obtained by EDR from the Federal Emergency Management Agency (FEMA) which has maps depicting FEMA-defined 100-year and 500- year flood zones. Wetlands The EDR database report shows that the subject property is located within the National Wetlands Inventory. This data, available in select counties across the country, was obtained by EDR from the U.S. Fish and Wildlife Service. Advanced GeoEnviron mental,Inc.