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October 11,2005 <br /> NOA Project Number: E05111B <br /> 6.7 Discussion of Percolation Test Results <br /> The soils within the sewage disposal areas of the site have demonstrated a satisfactory percolation ��,3, <br /> rate in accordance with the requirements of the EHD for the use of a standard septic system. <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 /> 7.0 CONCLUSIONS <br /> In summary, satisfactory percolation rates of the soil were achieved in the proposed septic disposal <br /> areas of the Site. The septic disposal areas of the proposed parcels appear suitable for a standard <br /> septic system. <br /> No ground water was encountered in any of the borings drilled on the property. The on-site water <br /> well was tested for nitrate and DBCP was non-detectable, and nitrate concentration in <br /> ground water was found to <br /> e 65.1 /L-NO31 which is above the maximum contaminant drinking <br /> water limit of 45 mg/L-N ecommend the well not be use for drinking water since the water <br /> quality test indicates levels of Nitrate above the MCL for drinking water.We recommend discussing <br /> well repair options for elevated nitrate with EHD. <br /> 7.1 Signatures <br /> The signatures of the environmental professionals involved in the preparation of this report can be <br /> found at the front of this package. <br /> 11 <br />