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Ni-rate Mass Balance Calculation. 3 AC Parcel <br /> Effluent Quantity(Q): 86 gaisfday Concentration Ram(Nb): 1.00 mgrt-N <br /> Effluent Stream (N.,.): 85.00 mg/L-N Denitrification(d): 35.0% <br /> Site Area(A): 1.O4 Acres Deep Pero.of Rain(R): 3.99 Wyr <br /> Waste Loading(W,,: 1.11 in/yr <br /> PesuR! <br /> Mass Balance(N,;): 12.0 mgfL-N <br /> MCL Drinking Water Nitrate as N: 10.9 mg/L-N <br /> Percent of MGL Nitrate as N 128% <br /> Equations: <br /> .r, = iQ; ate+', x _ x 30 0-4y x acre x L2jyL x 1 Find W <br /> yr day 7.48 gal 1 year 43,560 ft' 1 ft (A)acre <br /> 1.11 In/yr(site)=86 gat/day x(1 out-111 7.48 gats)x(365 days!1 year)x(1 acre/d3,58Q sgOlt)x(12 in/1 P)x(1 sfte/1.04 acres) <br /> N,= WN.(,-d)+RN, Hanhs¢5e-Fernemu a Equation(N¢I <br /> ,Af+R <br /> 12.77 mg/L-N=((1.11 inlyr x 85 ffpt-ry x(1.O.sB);%+(3.a9 inlyr x fmg2-N)1/(1,11 it/yr-3.9; rMyr) <br /> Variables: <br /> No=Average nitrate-N concentration (mg/f)of combined effluent and rainfall perwla;e (12.77 m91L-N). <br /> W=Uniform waste water loading for study area(InkT) (i.11 hchesfyear). <br /> Nw=total nitrate-N conceMratlon of waste,mater percolate(85 mg/L-N). <br /> d=F:actior of nitrate-N loss d,,e to eenitil.ication in the soil(35%). <br /> R=Uniform deep percolation of rainfall(3.99 in/yr)_ <br /> Nb=Background nhrste-N concentration of rainfall (1 rngiL-N). <br /> Assumptions: <br /> 1, Total nitrogen concentration of waste stream based on estimate of 85 mq/L-N. <br /> Fm^t on of n%trate-N lass due to benitrific-tion in the soil is assumed to be 35%. <br /> 3. Est;metsd deep percolation of rainfall is 3.99 infyr,sex deep percolation of rain worksheet, <br /> 4, Assume background nitrate-N concentration of rainfall is 1 mg/L-N. <br /> NEIL O.ANDERSON <br /> N 1 A T E 5 <br /> Plate .9 <br />