Laserfiche WebLink
L d <br /> LDecember 6,2004 <br /> NOA Project Number: E040130A <br /> �6.7 Discussion of Percolation Test Results <br /> L The soils within the sewage disposal areas of the proposed Parcels 2 and 3 have demonstrated a <br /> satisfactory percolation rate in accordance with the requirements of the EHD. The soils of these <br /> parcels appear to be suitable for a septic system utilizing leach lines and seepage pits. The soils <br /> withing the disposal area of the proposed Parcel 1 do not show a satisfactory percolation rate. <br /> LThese soils are found to be suitable for use with an engineered septic system. <br /> kl"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. Parcel 1 will require an engineered septic system design to mitigate the <br /> L <br /> unsatisfactory percolation rate of the soils oberved. <br /> i <br /> - 7.0 CONCLUSIONS <br /> L In summary, satisfactory percolation rates of the soil were achieved in the proposed septic disposal <br /> areas of two of the three parcels. The proposed Parcels 2 and 3 appear suitable for a standard septic <br /> Lsystem. <br /> The proposed Parcel 1 is suitable for an engineered septic system. As part of a separate scope of a <br /> L <br /> work, a Civil Engineer will prepare a septic system design for Parcel 1. <br /> No ground water was encountered in any of the borings drilled on the property.The depth to <br /> ground water was found to be approximately 160-180 feet below the ground surface for the period <br /> ` of Fall 1998 and Spring 1999. The on-site water well was tested for nitrate and DBCP. DBCP was <br /> non-detectable, and nitrate concentration in ground water was found to be 1.88 mg/L-NO3,which <br /> Lis well below the maximum contaminant drinking water limit of 45 mg/L-NO3. <br /> 8.0 LIMITATIONS <br /> LThe conclusions of this report are based on the information provided regarding the existing and <br /> proposed development,the use of the subject property,and the site conditions as they existed at the <br /> L time we excavated our test holes and performed the percolation tests. It was assumed that the test <br /> holes and percolation test results are representative of the subsurface conditions in the general area. <br /> 11 <br /> L <br /> L <br />