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Jadi Singh <br /> July 15,2003 <br /> F Page 2 <br /> Based on the assumptions.and limitations of the nitrate loading calculation, our office believes <br /> the proposed engineered septic system use will not result in a long term buildup of nitrate above <br /> 10 mg/L-N in the ground water.. <br /> According to the San Joaquin County Sewage Standards, the disposal area calculation is as <br /> follows: <br /> San Joaquin Counjy EHD Sewa a Standards 1996 Section No.s <br /> 8.6.3 Soil Factor(SF): 0.200 for sandy soil <br /> 8.6 Base Tank Capacity(BTC):,1,200 <br /> 8.6 Average Daily.Flow (ADF): 4,500 gallons per day. <br /> 8.6 Lineal Feet of Leach Line(LL) =SF x (ADF+BTC) <br /> 15140 ft= 0.200 x (4,500 + 1,200) <br /> 8.7.4 Filter bed area for sandy soil is three(3) times the.leach line length: ' <br /> 3,420 ft' = 1,140 ft x 3 <br /> According to the San Joaquin County Sewage Standards, the filter bed area for the site should be <br /> 3,420 ft . <br /> Our professional services were performed, out findings obtained,and our conclusions proposed . <br /> in accordance with generally accepted.engineering principles and practices. This warranty is in <br /> lieu of all other warranties either expressed or implied. Test findings'and statements of <br /> professional.opinion do not constitute a guarantee or warranty, expressed or implied. <br /> Best Regards, <br /> NEIL O. ANDERSON'&ASSOC.,INC. <br /> 6r) t% <br /> David J. Welch, M.Sc., Senior Geologist <br /> CEG-2151, CHG-653 �0 G01 <br /> J. WF O <br /> Attachments: Plate 1, Deep percolation of rainwater JPO LC �N <br /> Platen,Nitrate Mass Balance Calculation. p� No.2151 y <br /> cc: Bernie Deits (4 copies), Mike Smith (1 copy) . EAG NEER NG <br /> GEOLOGIST O�=Q <br /> OF CAS~\F <br /> . r O�Rsos <br /> Y � <br /> Q ti <br /> • <br />