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Soil Suitability and Nitrate Loading Study WAITERS PROPERTY 3525 Section Avenue, Stockton, California 1.0. INTRODUCTION AND PROPOSED DEVELOPMENT AdvancedGeo, Inc. (AGI) has prepared this Soil Suitability and Nitrate Loading Study (Study) for the property located at 3525 Section Avenue, Stockton, California (site or subject property). The purpose of this Study is to determine the potential impact from nitrate loading and the suitability of the subsurface for an onsite wastewater treatment system (OWTS) due to the proposed development of a residence and septic system at the site, and the future use of the property. The study was performed in accordance with the requirements of Section 9-1105.2(d) of the San Joaquin County Community Development Department (SJCCDD). The scope of work included a soil percolation test, review of published soil and groundwater information, local septic use and permit research and estimated nitrate impact to soil and groundwater at the site. There is one existing domestic water well at the site. The well was not sampled during this Study because there is currently no electrical power to the site. The site and surrounding area are illustrated in Figure 1. A site plan depicting structures, the percolation test hole location, and the planned locations of the proposed residence and septic system are illustrated in Figure 2. 1.1. DESCRIPTION OF SITE The location of the site, surrounding properties and general setting is illustrated on the Stockton East topographic map (7.5 Minute United States Geological Survey (USGS) Topographic Series, California). The site is located in the western portion of Section 45, Township 1 North, Range 7 East, Mount Diablo Base and Meridian (Figure 1). The map shows the property located at an elevation between 25 and 30 feet above mean sea level in an area of low topographic relief. The regional slope of the area is relatively gentle and dips toward the southwest. The property is located on the north side of Section Avenue, approximately 250 feet west of the termination point of Section Avenue and approximately 650 feet east of the intersection of Section Avenue and South Golden Gate Avenue, Stockton, California. The site consists of a 0.5-acre rectangular-shaped parcel identified as San Joaquin County Assessor Parcel Number (APN) 173-090-330. The current use type of the property is vacant, and the current zoning is not listed. One domestic water well is located on the property. No other structures are located on the property. The property will be provided potable water from the existing domestic water well located on the site (Figure 2). 1.2. DESCRIPTION OF PROPOSED DEVELOPMENT The proposed development will include the addition of an approximately 2,700 square- foot, four-bedroom home and a septic system. The septic system will be located in the