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1 <br /> 1 Nitrate Mass Balance Calculation <br /> 4350 E. Acampo Road, Acampo <br /> 1 <br /> Data Input: <br /> 1 Effluent Quantity(Q): 840 gals/day Concentration Rain (Nb): 1.00mg/L-N <br /> Effluent Stream (N„,): 35.00 mg/L-N Denitrification (d): 15.0% <br /> Site Area (A): 268Acres Deep Perc. of Rain(R): 5.29 in/yr <br /> 1 Waste Loading(W): 4.21 in/yr <br /> Result: <br /> Mass Balance(NJ: 122 mg/L-N <br /> 1 MCL Drinking Water Nitrate as N: 10.0 mg/L-N <br /> Percent of MCL Nitrate as N 122% <br /> Equations: <br /> 1 (W) in = (Q) gal x 1 ft3 x 365 day x 1 acre x 12 in x 1 Fin <br /> yr day 7.48 gal 1 year 43,560 ft2 1 ft (A)acre <br /> 1 4.21 in/yr(site) =840 ga//dayx(1 cu-R/7.48 gals)x(365 days/1 year)x(1 acre/43,560 sq-It)x(12 in/1 It)x(1 site/2.68 acres) <br /> Nc=ANwa:L+RNb Hantzsche Fenaemore Eouabon(Nc) <br /> 1 W+R <br /> 12.19 mg/L-N=((4.21 in/yr x 35 mg/L-N x(1-0.25))+(5.29 in/yr x 1mg/L-N))/(4.21 in/yr+5.29 in/yr) <br /> 1 Variables: <br /> Nc =Average nitrate-N concentration(mg/1)of combined effluent and rainfall percolate(12.19 mg/L-N). <br /> W = Uniform waste water loading for study area (in/yr) (4.21 inches/year). <br /> Nw =Total nitrate-N concentration of waste water percolate(35 mg/L-N). <br /> 1 d = Fraction of nitrate-N loss due to denitrification in the soil(25%). <br /> R= Uniform deep percolation of rainfall (5.29 in/yr). <br /> Nb = Background nitrate-N concentration of rainfall (1 mg/L-N). <br /> ' Assumptions: <br /> 1. Total nitrogen concentration of waste stream based on estimate of 35 mg/L-N. <br /> 2. Fraction of nitrate-N loss due to denitrification in the soil is assumed to be 25%. <br /> 3. Estimated deep percolation of rainfall is 5.29 in/yr,see deep percolation of rain worksheet. <br /> 4. Assume background nitrate-N concentration of rainfall is 1 mg/L-N. <br /> 1 <br /> 1 <br /> 1 gpetralogix <br /> 1 <br /> Plate 8 <br /> 1 <br />