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25 June 2014 AGE Project No. 14-3062 Page 3 of 15 sediment ranging in age from Jurassic to Recent, creating a nearly flat- lying alluvial plain that extends from the Tehachapi Mountains in the south to the Klammath Mountains in the north. Western and eastern boundaries of this province are comprised of the California Coast Range and the Sierra Nevada, respectively. Rocks composing the basement complex of the province have not been completely defined but are believed to be of metamorphic and igneous origins. Northern and southern portions of the Great Valley Province have been designated the Sacramento and San Joaquin Valleys, respectively. Modesto, Riverbank, and Turlock Lake Formations and overlying Recent alluvium are the principal source of domestic ground water in the 13,500- square-mile San Joaquin Valley Ground Water Basin (Basin 5-22). This basin is drained primarily by the San Joaquin River. Groundwater depth and flow direction data were obtained through review of the Maps of Lines of Equal Elevation/Depth to Groundwater (San Joaquin County Flood Control District and Water Conservation District, Spring 2012). Depth to groundwater in the general area of the subject property is between 40 feet and 50 feet below surface grade (bsg) with a general northeastern groundwater flow direction. Topography The property is located at an elevation of 31 feet above mean sea level (MSL) and in an area of low topographic relief. Regional slope of the area is toward the general northeast. Surface Soils EDR provides a report listing dominant soil composition in the general area of 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 is listed as JACKTONE soil, a clay, in the Class D Hydrogeologic Group which includes very slow infiltration rates. Corrosion potential of this soil for uncoated steel is high. Surface Water There are no surface water features on the subject property. The nearest Features surface water features in the vicinity of the property is the Stockton Diverting Canal, located approximately 3,200 feet northeast of the site. Flood Zone The EDR database report shows that the subject property is not located within a 100 or 500-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 not 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 GeoEnvironmental,Inc.