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Nitrate Loading Estimate <br /> A nitrate loading scenario was employed to determine the impact from the proposed <br /> project to ground water. The scenario utilizes the variables discussed previously, which <br /> represent the estimated conditions and uses associated with this project. The following <br /> table presents a summary of the assumptions for the nitrate loading calculation for the <br /> Site, as presented in Plate 10. <br /> Table 6. Assumptions for Nitrate Loading Calculation <br /> Variable Value Units Description <br /> Q 625.5 gpd Effluent flow rate <br /> Nw 54.3 mg/L-N Effluent stream concentration <br /> A 2.69 acres Site area <br /> Nb 1.00 mg/L-N Concentration of rain <br /> d 0.20 constant Denitrification factor <br /> inches per <br /> R 6.57 year Deep percolation of rain water <br /> inches per <br /> W 3.13 year Uniform waste water loading for calculation <br /> The details of the nitrate loading calculation are included in Plate 10. The results of the <br /> calculation are presented in the following table. <br /> z <br /> Table 7. Result of Nitrate Loading.Calculation. <br /> Variable Value Units Description <br /> Calculation of concentration of percolating <br />! Nc 14.68 mg/L-N effluent (� � <br /> The US EPA recommended MC r nitrate in drinking water is 10 mg/L-N. In a worst <br /> case situation, the mare14.68 <br /> uildup itrates from the use of septic systems in the <br /> aquifer is predicted to mg/L- . The result. of the nitrate loading. estimate <br /> exceeds the maximum wa andard. <br /> LOGE1013 Page 12 <br /> I <br />