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Fj <br /> Nitrate Mass Balance Calculation, 30 AC Parcel 2 <br /> Data Input: <br /> Effluent Quantity(Q): 0 gals/day Concentration Rain (Nb): 1.00 mg1L-N <br /> Effluent Stream (Nj: 0.00 mg/L-N Denitrification (d): 15.0% <br /> �1 <br /> Site Area(A): 30.00 Acres Deep Perc.of Rain (R): 3.30 in/yr <br /> Waste Loading (W): 0.00 in/yr <br /> Result: <br /> Mass Balance(Nr <br /> ): 1.0 mg/L-N <br /> MCL Drinking Wafer Nitrate as N: 10.0 mg/L-N <br /> {� Percent of MCL Nitrate as N 10% <br /> FI ' <br /> Equations: <br /> (W) in = (Q) gal x 1 ft3 x 365 day x 1 acre x 12 in x I Find <br /> yr day 7.48 gal 1 year 43,560 ft2 1 ft (A)acre <br /> 0 irVyr(site) =0 gal/day x(1 cu-ft/7.48 gals)x (365 days/1 year)x(1 acre/43,560 sq-ft)x(12 in/1 ft)x (1 site 130 acres) <br /> N,= WN-(1-d)+RN6 Hantzsche-Fennemore Equation (Nc) <br /> �^ W+R <br /> 1 mg/L-N=((0 in/yr x 0 mg/L-N x (1-0.15))+(3.3 in/yr x 1mg/L-N))/(0 in/yr+3.3 in/yr) <br /> Variables: <br /> �4 Nc=Average nitrate-N concentration (mgll)of combined effluent and rainfall percolate (1 mg/L-N). <br /> p W= Uniform waste water loading for study area (in/yr) (0 inches/year). <br /> Nw=Total nitrate-N concentration of waste water percolate (0 mg/L-N). <br /> d=Fraction of nitrate-N loss due to denitrification in the soil (15%)., <br /> R= Uniform deep percolation of rainfall (3.3 in/yr). <br /> Nb= Background nitrate-N concentration of rainfall(1 mg/L-N). <br /> Assumptions: <br /> Fit 1. Total nitrogen concentration of waste stream based on estimate of 0 mg/L-N. <br /> 2. Fraction of nitrate-N loss due to denitrification in the soil is assumed to be 15%- <br /> 3. Estimated deep percolation of rainfall is 3.3 inlyr, see deep percolation of rain worksheet. <br /> 4. Assume background nitrate-N concentration of rainfall is 1 mg/L-N. <br /> n <br /> i , <br /> �I <br /> NEIL O. ANDERSON <br /> AND ASSOCI ATES <br /> i Plate 10 <br />