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Soil Suitability/ Nitrate Loading Study 1��rraeon <br /> Avanti Nut Co. ■ Stockton, CA <br /> May 19, 2016 ■ Terracon Project No. NA167038 <br /> Table 5. <br /> Summary of Nitrate Mass Balance Equation. <br /> Result Average Effluent Concentration Leachfield Deep <br /> Parcel (Nc)* Acres(A) Daily Flow (Nw) Denitrification Percolation <br /> of Rainfall <br /> (mg/L-N) (Q)(gpd) (mg/L-N) (d) (R)(in) <br /> 1 1.51 19.19 42.8 85 25% 4.37 <br /> "Maximum contaminant level(MCL)for nitrate in drinking water is 10 mg/L-N. <br /> 2.3.6 Impact of Nitrate Loading to Nearby Water Sources <br /> LSince the subject property is relatively flat, we do not foresee percolating effluent affecting any <br /> surface water resources. <br /> 2.4 Discussion of Nitrate Loading Results <br /> 2.4.1 Total Nitrate Impact <br /> Based on the method and assumptions described, the result of the nitrate loading balance <br /> indicates that the development on the parcel should not cause a buildup of nitrates in the aquifer <br /> above 10 mg/L-N. <br /> 2.4.2 Methods of Mitigation <br /> Because of the favorable result of the nitrate loading calculation, no mitigation measures are <br /> warranted. <br /> 3.0 Conclusions and Recommendations <br /> In summary, percolation rates meet the minimum EHD standards at a deep depth (21.0 feet bgs) <br /> in the proposed septic leach field area. The parcel appears suitable for the use of a standard <br /> septic system utilizing septic pits designed for the intended usage. All final septic system <br /> construction should follow the San Joaquin County On-Site Wastewater Disposal Standards <br /> where applicable. <br /> Based on the method and assumptions described, the results of the nitrate loading balance <br /> indicated that the proposed development at the site should not cause a buildup of nitrates in the <br /> aquifer above 10 mg/L-N. <br /> Responsive ■ Resourceful ■ Reliable 14 <br />