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Soil Suitability / Nitrate Loading Study Irerracon <br /> Ernst Property ■ Tracy, CA <br /> February 21, 2019 revised April 9, 2019 ■ Terracon Project No. NA197000 <br /> 1.1.2 Proposed Development <br /> Based on information provided by Mr. Warren, the site is proposed to be developed with an <br /> approximately 1,400 SF mobile home near the northwest corner of the site and an additional <br /> septic system. <br /> 1 .1.3 Site Vicinity <br /> The adjoining properties are developed with residences. A detailed vicinity map is included in <br /> Appendix (Exhibit 1). <br /> 1.1.4 Site Map <br /> A detailed site map is included in Appendix A (Exhibit 2). <br /> 1.2 Present and Past Uses of the Site <br /> 1.2.1 Past and Present Site Use <br /> Terracon reviewed the USGS, Tesla (1907, 1943) and Midway (1916, 1953) California <br /> Quadrangle topographic maps, four historical aerial photographs dated 1940, 1952, 1963, and <br /> 1975 provided by the San Joaquin County Surveyors Office, and GoogleEarthTm aerial <br /> photographs dated 1993 through 2018 to establish a history for the site. The following table is a <br /> description of the site based on the source. <br /> Table 1. <br /> Historical Information. <br /> Year Source Description <br /> 1907 Topo Undeveloped land <br /> 1916 Topo Undeveloped land <br /> 1940 Aerial <br /> 1943 Topo <br /> 1952 Aerial <br /> 1953 Topo Agricultural land use/row crops <br /> 1963 Aerial <br /> 1975 Aerial <br /> 1993 Aerial <br /> 2003 Aerial Developed with the existing residence. Storage unit added to the site by 2003. <br /> 2014 Aerial <br /> Based on a review of the historical information, the site appeared to consist of undeveloped land <br /> in the early 1900s, was developed with agricultural row crops from as early as 1940 through the <br /> mid-1970s, and was developed with the existing residence by the early 1990s. It should be noted, <br /> Responsive■ Resourceful ■ Reliable 4 <br />