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L <br /> Mr. Steven Malcoun <br /> December 9,2003 <br /> '` Page 13 <br /> Table 7. <br /> `, Summary of Nitrate Mass Balance Analysis. <br /> Calculation Result Acres Average Effluent Leachfield Deep Percolation <br /> (Ne)* (A) Daily Flow Concentration Denitrifi- of Rainfall(R) <br /> (Q)(Table 2) (Nw) cation(d) (Plate 8) <br /> see Plate 9 7.8 mg/L-N 3.47 560 gpd 45 mg/L-N 35% 6.84 in <br /> see Plate 10 1.85 -N35.41 560 d 45 m -N 35% 6.84 in <br /> • Maximum contaminate level(MCL)for Nitrate in drinking water is 10 mg/L-N.Estimate does not include nitrate <br /> contribution from agriculture. <br /> Based on the method and assumptions described, the result of the nitrate loading balance <br /> ` indicates the proposed development will not cause a build up of nitrate in ground water above 10 <br /> mg/I,N over the long term. This opinion assumes leaching of any agricultural fertilizer is <br /> minimal and the orchard trees and orchard grasses uptake nearly all residual fertilizers applied. <br /> L <br /> 8.0 CONCLUSIONS AND RECOMMENDATIONS <br /> A satisfactory percolation rate was achieved on each parcel. The soils are suitable for a septic <br /> system with leach lines and seepage pits. The nitrate loading balance was performed for each <br /> parcel and based on the assumptions used in this report and assumptions of the Hantzshe& <br /> 6. Finnemore equation,the proposed project will not cause a long term buildup of nitrates above 10 <br /> mg/L-N in the ground water. Our recommendations for the project are as follows: <br /> -Follow the San Joaquin County Sewage Standards where required. <br /> L <br /> '045 4 <br /> I <br /> O <br /> �$so <br /> � I <br />