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Nitrate Mass Balance Calculation 1%0 <br /> (43.0-Acre Parcel) <br /> N"input <br /> Waste Loading(W): 0.16 in/yr <br /> Site Area(A): 43.30 Acre <br /> Effluent Qty(Q): 525 Gals Concentration Rain(Nb): 1.00 mg&-N <br /> Effluent Stream(Nw): 45.00 mpt-N Denitrification(d): 25% <br /> Result Deep Perc.of Rain(R): 1.85 inches <br /> Mae$Balance(Mc): 3.7 mWI-N <br /> MCL Drinking Water Nitrate as N: 10.00 mgk-N <br /> Peroant of MCL Nitrate as N 370A <br /> Equations: <br /> From Table 7 in Report.• 525 Gals &�jd Efffrlent Quantify!Qi <br /> (W) in - (Q) 0 x -& x 365 day x I am x jzh x L Find MQ <br /> yr day 7.48 gal 1 year 43,560 fe 1 It (A)acre <br /> 0.16 iW(sit)=525 ga!/day x(1 ca-V 7.48 gals)x(365 dayd 1 year)x(1 acre/43,560 sq-ft)x(12 in/19)x(1 site/43 3 acres) <br /> N,- WfUj-(l1+RN. Hantzsche-Fenner K"Egaaft fNcl <br /> W+R <br /> 3.65 mg/L-N=((0:16 iW x 45 mg/L-N x(1-0.25))+(1.95 inlyr x 1mg1L-N))V(0.la iW+1.0 in/yr) <br /> Variables: <br /> Nc-Average nitrate-N concenkation(mWQ of oombned effluent and rainfall percolate(3.65 mglL-N). <br /> _ W-Uniform waste water loading for shady area(inlyr)(0.16 inctosJyear). <br /> Nw=Total nitrate-N ooncentration of waste water percolate(45 mg/L-N). <br /> d■Fraction of nitrate-N loss due to dersltriflcation in the so1(25%). <br /> R■Uniform deep percolation of rainfsl(1.85 Wljr). <br /> Nb+Background nitrate-N concentration of rakftl(1 mglL-N). <br /> Assumptions, <br /> 1. Nitrate-N concentration of waste stream based on estimate of 45 mgfL-N. <br /> Assumption based on work from Hant niche and Finnemors,1992. <br /> 2. Fraction of nitrate-I+l loss due to dealtriflcation in the sol is assumed to be 25%. <br /> Assumption based on work from Hantzsche and Fwmemors,1992. <br /> 3. Estimated deep percolation of rainfal is 1.85 Irby,see deep percolation of rain worksheet. <br /> 4. Assume background rdtrate-N cormerfttlon of rainfall is 1 mglL-N based on range by <br /> Hanbsdre and Fennemore,1992. <br /> Neo.a.ANo ON s nssoc.,WC. <br /> Plate 6 <br />