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i <br /> j <br /> Proposed Septic Sys - M2 Winery <br /> Data Input: j <br /> Effluent Quantity in GPD (Q): 344 Gall,Day <br /> Effluent Stream in mg/L-N (Nw): 74.6 mg/L-N <br /> Site Area in Acres (A): 17 Acres <br /> Concentratiion in Rain in mg/L-N (Nb) : 1 mg/L-N <br /> Denitrification in percent (d): 25 % <br /> Deep Pere. Of Rain in inches/yr(R }: 7.85 In/yr <br /> Calculations: <br /> Wi=Q x Cu-Ft/Gal x (Days/Yr) x (Sq-Ft/Acre x Inches/Ft) x (1/A) <br /> Wi=344 x (1/7.48) x 365 x (1/43560) x 12 x (1/17) 0.272 <br /> NC= Wi*N-(1-d)+RNh <br /> Wi+R <br /> N°= 0.272*74.6(1-0.25)+(7.85*1) = 2.84 --- Z <br /> 0.272+7.85 <br /> Result: <br /> Uniform waste water loading (Wi) 0.27 Inches/Yr <br /> Mass Balance in mg/L-N (N,): 2.84 mg/L-N <br /> Total Nitrate Mass 58 lbs` <br /> f= <br /> MCL Drinking Water N as N: 10 m /L-N <br /> Perecnt of MCL Nitrate as N 28 % <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 (in/year) <br /> Nw =Total nitrate-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 (Nw): 44 mg/L-N <br /> Concentratiion in Rain in mg/L-N (Nb) 1 mg/L-N <br /> Denitrification in percent (d): 25 % <br /> i <br /> I <br /> 1 <br />