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6 <br /> Mr.Jim Hoagland <br /> January 19,2004 <br /> Page 9 <br /> Table 4. <br /> Soil Boring Log P-1 <br /> (East,Typical of both locations) <br /> Depth Interval (ft) Soil Type Unified Soil Classification <br /> 0-2 Dark brown/gray clayey silt with sand,some ML and CL <br /> thin layers of clay(CL) <br /> 23-25 Brown silty sand,clean. SP <br /> Note:Descriptions are representative both boring locations. <br /> Percolation rate is one important measure of septic system applicability. Based on thej <br /> percolation rate of the shallow soil zone—described later in the report—,the shallow soil zone , <br /> has demonstrated satisfactory percolation rate according to the San Joaquin County <br /> Environmental Health Department. A deep percolation test has demonstrated a satisfactoryP <br /> percolation rate. The utilization of seepage pits in conjunction with shallow leach lines should <br /> �- be utilized for the septic system disposal field. <br /> Since a shallow percolation test achieved a satisfactory percolation rate, the Site has met the <br /> '` EHD requirement for a satisfactory percolation rate. Construction of the septic system should <br /> follow the requirements of the EHD Sewage Standards. <br /> 6.0 PERCOLATION TEST INFORMATION <br /> 6.1 Percolation Test Boring Locations <br /> bu <br /> Shallow and deep percolation tests were conducted within two areas designated for a sewage 66_. <br /> disposal system. Please refer to the scaled site plan for the exact locations (Plate 1). <br /> 6.2 Boring Preparation and Specifications <br /> The shallow borings were advanced to 3 feet and the deep borings were drilled to 25 feet. All <br /> four borings were drilled using a truck-mounted Deep Rock auger rig and hand auger tool on <br /> January 5, 2004. <br /> ?DE RSO <br /> P 1 <br /> O ` <br /> O <br />