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04 May 2020 AdvaenceAOwned Geo Project No. 20-5080 Page 3 of 17 Geology and The subject property and surrounding area lie within the San Joaquin Valley Hydrology Groundwater Basin, Eastern San Joaquin Subbasin (5-22.01).This subbasin is bound on the south, southwest, and west by the Modesto, Delta-Mendota, and Tracy Subbasins, respectively, and on the northwest and north by the Solano, South American, and Cosumnes Subbasins.The Solano and South American are subbasins of the Sacramento Valley Groundwater Basin. The Eastern San Joaquin Subbasin is drained by the San Joaquin River and several of its major tributaries, namely, the Stanislaus, and Calaveras, and Mokelumne Rivers. The San Joaquin River flows northward into the Sacramento and San Joaquin Delta and discharges into the San Francisco Bay. Based on information obtained from the State of California's Geotracker database, groundwater in the vicinity of the property is found at approximately 34.5 feet below surface grade and flows to the general northwest. Topography The property is located at an elevation of approximately 47 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 at the subject property consists of soil identified as tinnin, a loamy coarse sand in the Class A Hydrologic Group which includes high infiltration rates. Corrosion potential of this soil for uncoated steel is high. Surface Water A dry slough is located along the north and northwest subject property boundary line. Features The nearest surface water features in the vicinity of the property is the Stanislaus River, approximately 2.4 miles south of the subject property. 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. 4.0. HISTORICAL USE The history of the subject property from as early as 1915 to present was researched by reviewing aerial photographs, topographic maps, San Joaquin County Building Department records and a personal interview. Based on a review of historical records, the property has been utilized as residential property since at least 2006. Representative historical documents are included in Appendix C. 4.1. SANBORN FIRE INSURANCE MAPS Sanborn Fire Insurance maps were developed in the late 1800s and early 1900s for use as an assessment tool for fire insurance rates in urbanized areas but are now utilized as a valuable source of historical and environmental risk information. EDR owns the largest