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L <br /> June 23,2006 <br /> NOA Project Number. E06058B <br /> 6.8 Discussion of Septic System Sizing <br /> fSeptic System construction should follow the San Joaquin County On-Site Wastewater Disposal <br /> 1r Standards where applicable. <br /> 7.0 CONCLUSIONS <br /> L In summary, a satisfactory percolation rate of the soil was achieved in the proposed septic disposal <br /> area on proposed Parcels 1 and 2. The proposed parcels appear suitable for standard septic systems <br /> utilizing leach lines and pits. <br /> M No ground water was encountered in any of the borings drilled on the property. The depth to <br /> groundwater was 110 to 130 feet in 1999.The on-site water well was tested for nitrate and DBCP. <br /> 4 DBCP was non-detectable, and nitrate concentration in ground water was found to be 16.8 mg/L- <br /> �r NO3i below the maximum contaminant drinking water limit of 45 mg/L-NO3. <br /> L 8.0 LIMITATIONS <br /> L The 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 /> time we excavated out test holes and performed the percolation tests. It was assumed that the test <br /> L holes and percolation test results are representative of the subsurface conditions in the general area. <br /> Our professional services were performed,our findings obtained, and our conclusions proposed in <br /> accordance with generally accepted engineering principles and practices. This warranty is in lieu of <br /> all other warranties either expressed or implied. Test findings and statements of professional <br /> �. opinion do not constitute a guarantee or warranty, expressed or implied. <br /> L <br /> NEIL O.ANDERSON&ASSOCIATES, INC. <br /> I <br /> Nan y Rosulek, A. DaviWelch,Principal Geologist <br /> Staf.Scientist CEG-2151, CHG-653,PGP-1049 <br /> r <br /> �SS�pNAL 6F�� <br /> � oQ Ci <br /> y DAVID J.WELCH <br /> 10 NO.2151 k <br /> * CERTIFIED <br /> ENGINEERING <br /> GEOLOGIST Q• <br /> OF CA11F <br />