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flLE/NFELOER <br /> F/IgdthopN FI9h/Sob,bns. <br /> ' 11 CONCLUSIONS <br /> 1 The results of our percolation tests indicate that a suitable soil percolation stratum does exist at <br /> the percolation test location at the SJCEHD observed depths tested of about 3, and 5 feet below <br /> ' existing site grade. According to the California Water Boards OWTS Policy (June,2012) a suitable <br /> soil condition is defined as a stratum capable of percolating water at a rate of not faster than 1 <br /> minute per inch (MPI) or slower than 120 MPI. <br /> The nearest water body to the site is the San Joaquin River, approximately 2 miles to the west. <br /> ' Due to the distance to the San Joaquin River and the general gradient of groundwater, we <br /> anticipate that the impact to surface water will be low. <br /> Even though the estimated waste/septic flow and nitrate concentration of the leach field effluent <br /> value used in our calculations are likely conservative, it is our professional opinion that a <br /> conventional septic tank/leach trench sewage disposal system designed per SJCEHD criteria will <br /> adequately serve the proposed new facility and that there is not a need for an engineered septic <br /> ' system to be installed at the site. <br /> 1 <br /> ' 20162869.001A/ST016R38644 Page 12 of 15 April 19, 2016 <br /> 0 2016 Kleinfelder <br />