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P.c*--aSqb�SySb , Sta.e <br /> Data Input: <br /> Effluent Quantity in GPD(Q): 748 Gal/Day <br /> Effluent Stream in mg/L-N(N,): 65.7 mg1L-N <br /> Site Area in Acres(A): 1O Acres <br /> Concentratnon in Rain in mg1L-N(NJ: 1 mgiL-N <br /> Denitrification in percent(d): 25 % <br /> Deep Perc.Of Rain in Incheslyr(R): 7.85 1 nlyr <br /> Calculations: <br /> Wi=Q x Cu-FdGal x(Days/Yr)x(Sq-Ft/Acre x Inches/Ft)x(1/A) <br /> Wi=748 x(1/7.48)x 365 x(1/43,560)x 12)x(1110)=1.006 <br /> N�=Wi`N.(1-d)+R N, <br /> Wi+R <br /> k=1.006'65.7(1-0.25)+(7.85'1)=6.48 <br /> 1.006+7.85 <br /> Result: <br /> Uniform waste water leading(Wi) 1.01 Inches/Yr <br /> Mass Balance in mg/L-N(NJ: 6.48 mg/L-N <br /> Total Nitrate Mass 112 it* <br /> MCL Drinking Water N as N: 10 mg/L-N <br /> Perecnt of MCL Nitrate as N <br /> Variables: <br /> N,=Average nitrate-N concentration(mg(L)of combined effluent and ranfall percolate <br /> Wi =Uniform waste water loading for study area(inlyeaf) <br /> Nw=Total nivate-N concentration of waste water percolate(mg/L-N) <br /> d=Fraction of nitrate-N loss due to denitrification in the soil (%) <br /> R=Uniform deep percolation of rainfall(inches/yr) <br /> Nb=Background nitrate-N concentration of rainfall (mg/L-N) <br /> Assumptions: <br /> Res.Effluent Stream in mg/L-N(N,,): 44 mg/L-N <br /> Concenvatuon in Rain in mg/L-N (NJ: 1 m91L-N <br /> Denitrification in percent(d): 25 % <br />