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L <br /> March 22,2005 <br /> NOA Project Number: E04132A tl eNIp^ <br /> C FXYh <br /> �T �t <br /> 6.7 Discussion of Percolation Test Results <br /> L The soils within the sewage disposal areas of the Parcels have demonstrated a satisfactory <br /> percolation rate in accordance with the requirements of the EHD. The soils of these parcels appear <br /> to be suitable for a septic system utilizing leach lines or a filter bed. <br /> L 6.8 Discussion of Septic System Sizing ! 1 <br /> Septic System Construction should follow the San Joaquin County On-Site Wlastewater Disposal <br /> Standards where applicable. Refer to the attached Nitrate Loading Study for a complete discussion <br /> of recommendations for the project. <br /> L 7.0 CONCLUSIONS <br /> In summary, satisfactory percolation rate of the soil was achieved on both parcels. The proposed <br /> Parcels appear suitable for a standard septic system. <br /> LNo ground water was encountered in any of the borings drilled on the property. The depth to <br /> ground water was found to be approximately 80-100 feet below the ground surface for the period of <br /> Fall 1998 and Spring 1999. <br /> LNitrate was found at 53.4 mg/L-NO3, above the maximum contaminant level (MCL) set by the US <br /> EPA of 45 mg/L-NO3. D$CP teas-not detected in the water sample. Since the nitrate <br /> concentration was slightly higher than the MCL set by the EPA,we recommend that any infants, <br /> small children and pregnant/nursing women avoid drinking the well water. If the concentration of <br /> the nitrate in the well continues to elevate, the owner may consider repairing or replacing the well. <br /> L 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 /> L <br /> L <br /> L <br /> L <br /> 11 <br /> L <br /> L <br />