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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,w): 46.50 mg/L-N Concentration Rain (Nb): 0.17 mg/L-N <br /> Waste Loading (VMI): 2.69 irVyr Denitrification (d): 25.0% <br /> Result: Deep Pere. of Rain (R): 6.79 in <br /> E Mass Balance(NC): 10.0 mg/L-N <br /> MCLDrinking Water. 10.0 mg&-N <br /> Percent of MCL: 100% <br /> Equations: <br /> (W) in = (Q) gal x 1 ft3 x 365 day x 1 acre x 12 in x 1 <br /> yr day 7.48 gal 1 year 43,560 ftz 1 ft (A) acres <br /> N, mg_= WN-(1-d)+RN,, <br /> L W+R <br /> .Variables: <br /> ,Nc= Average nitrate-N concentration (mgll) 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 /> 'id = 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 Finnemore, 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 ptRSoy <br /> NEIL O.ANDERSON&ASSOC.,INC. <br /> GE01$WMrJ�L SFANf1S-@plNffliN�tABOW17dtlE5 Z "' <br /> 72 Nou,tm Ln Ln4,CA 9SA0 O <br /> '. Rm17a7 3l CI 7S S O��' <br /> FILATE 10 <br />