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6. <br /> ` May 5,2005 <br /> NOA Project Number: E05057A <br /> 6.7 Discussion of Percolation Test Results <br /> The soils within the sewage disposal areas of Parcels 1 and 2 have demonstrated a satisfactory <br /> percolation rate in accordance with the requirements of the EHD. The soils of these parcels appear <br /> y to be suitable for a standard septic system. Parcels 3 and 4 have not demonstrated a satisfactory <br /> percolation rate in accordance with the requirements of the EHD. The soils of these parcels appear <br /> suitable for an engineered se tics stem. - <br /> 6.8 Discussion of Septic System Sizing <br /> Septic system construction should follow the San Joaquin County On-Site Wastewater Disposal <br /> Standards where applicable. <br /> 1.. <br /> 7.0 CONCLUSIONS <br /> Though two of the four parcels achieved a satisfactory percolation rate, all four parcels will require a <br /> raise-mound engineered septic system. The EHD is requiring an engineered septic system on each <br /> parcel due to the shallow ground water in the area. Our office has been contracted to prepare the <br /> engineered septic system drawings, they will follow this report shortly. <br /> Ground water was encountered in a ground water boring just below a depth of three and a half feet <br /> on the property. The on-site water well was tested for nitrate and DBCP. Both nitrate and DBCP <br /> were non-detectable in the water sample. <br /> bw <br /> r. <br /> Van <br /> 11 <br />