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Soil Suitability and Nitrate Loading Evaluation Page 2 <br /> 25071 South Lammers Road <br /> Tracy, California <br /> June 16, 2023 NATS Job No. 22-355G <br /> The existing residence to the north (APN: 209-25-022) is indicated to have an existing <br /> well and OWTS. Based on review of aerial photography and published mapping of the <br /> surrounding properties, current and past primary use of these adjacent properties has <br /> been primarily for agricultural purposes. <br /> Site reconnaissance and topographic mapping of the site indicates the proposed leach <br /> field area is relatively level at elevation of 85 feet above msl. Grading for the new <br /> improvements is expected to include nominal cut/fill for leveling. Information included <br /> within this report is provided for use in the design of the proposed leach field. An <br /> "Exploration Map", attached as Figure 2, shows the approximate leach field location as <br /> well as the percolation test and groundwater boring location. <br /> 3.0 SEPTIC PERMITS AND PERFORMANCE <br /> Adjacent properties surrounding the subject site are currently in use for agricultural <br /> production. A search of San Joaquin Environmental Health Department Program Facility <br /> Records (https://www.sjgov.org/department/envhealth/public-records) for sites in the <br /> vicinity of the proposed project was performed resulting in the following information. <br /> Permits exist for installation of the original OWTS, a 265 ft deep well and well pump <br /> replacement in 2005 for the existing residence to the north (APN: 209-25-022). The <br /> pump replacement permit indicates groundwater level at 122 ft depth (2005). No septic <br /> system repair permits were found for any of the other properties immediately adjacent <br /> 4713 ENTERPRISE WAY* SUITE 4* MODESTO * CALIFORNIA * 95356 * 209-545-1108 <br />