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NITRATE LOADING ANALYSIS <br /> Determine minimum acreage for a 4-bedroom residence <br /> Effluent Quantity(Q): 200.00 gals/day Site Area (A): 1.00 Acres <br /> Effluent Stream (N,K): 45.50 mg/L-N Concentration Rain (Nb): 0.17 mg/L-N <br /> Waste Loading (W): 2.69 inlyr Denitrification (d): 25.0% <br /> Result: Deep Perc. of Rain (R): 6.79 in <br /> Mass Balance (N,,): f0.0 mg/L-N <br /> MCI-Drinking Water. 10.0 mg/L-N <br /> Percent of MCL: 100% <br /> Equations: <br /> (W) in = (Q) gajal x 1 ft3 x 365 da x 1 acre x 12 in x 1 <br /> yr day 7.48 gal 1 year 43,560 ft' 1 ft (A) acres <br /> N� WNW(1-d)RNh <br /> L W+R <br /> Variables: <br /> Nc=Average nitrate-N concentration (mgA) of combined effluent and rainfall percolate (10.01 mg/L-N). <br /> W= Uniform waste water loading for study area (in/yr). <br /> 200 gals/day on a 1 acre site (2.69 in/yr). <br /> Nw=Total nitrate-N concentration of waste water percolate (46.5 mg/L-N). <br /> d = Fraction of nitrate-N loss due to denitrification in the soil (25%). <br /> R= Uniform deep percolation of rainfall (6.79 in/yr). <br /> Nb=Background nitrate-N concentration of rainfall (0.17 mg/L-N). <br /> Assumptions: <br /> 1. Nitrate-N concentration of waste stream based on estimate of 46.5 mg/L-N. <br /> Assumption based on work from Hantzsche and Finnemore, 1991. <br /> 2. Fraction of nitrate-N loss due to Denitrification in the soil is assumed to be 25%. <br /> Assumption based on work from Hantzsche and 1=innemore, 1991. <br /> 3. Estimated deep percolation of rainfall is 6.79 in/yr, see deep percolation of rain table. <br /> 4. Assume background nitrate-N concentration of rainfall is 0.17 mg/L-N based on range by <br /> Hantzsche and Fennemore, 1991. <br /> r pcRso� <br /> NEIL O.ANDERSON S ASSOC.,INC. <br /> [EOIEQ MC/i SERVICES-IMMMMUM 6l PATUHES <br /> PLATE 10 <br />