Laserfiche WebLink
U <br /> Nitrate Mass Balance Calculation <br /> Parcel No. 3, 5.0 Acres <br /> �4 <br /> � Data Input: <br /> Site Area (A): 5 0 Acnes <br /> Effluent Quantity (Q): 250 gals/day Concentration IRain (Nb): 0.17 mg(L-N <br /> Effluent Stream (N,N): 45.00 mg/L-N Denitrification (d): 25.0% <br /> Waste Loading (W): 0.67 in/yr Deep Pere. of Rain (R): 7.86 in <br /> Result: <br /> yf Mass Balance (N,): 2.82 mg(L-N i <br /> MCLDrinking Water: 10. m91L-N <br /> Percent of MGL: 28% <br /> Equations; <br /> (VII) in = (Q) gal x 1 W x 36-_5-day x 01 acre x 12 in x 1 <br /> yr day 7.48 gal 1 year 1443,560 ft2 1 ft (A) acres <br /> N,= WN-(1-d)+RN,, <br /> W+R <br /> Variables: <br /> t Nc=Average nitrate-N concentration (mg/1) of combined effluent and rainfall percolate (2.82 mg/L-N). <br /> E W= Uniform waste water loading for study area (in/yr) <br /> W is 150 gallons per day on a 5 acre site (0.67 in/yr). <br /> Nw=Total nitrate-N concentration of waste water percolate (45 mg/L-N). <br /> d = Fraction of nitrate-N loss due to denitrification in the soil (25%). <br /> R= Uniform deep percolation of rainfall (7.86 in/yr). i <br /> Nb= Background nitrate-N concentration of rainfall (0A7 mg/LI"N). <br /> Li I <br /> Assumptions: <br /> 1. Nitrate-N concentration of waste stream based on estimate of 45 mg/L-N. <br /> UAssumption based on work from Hantzsche and Finnemore, 1991. <br /> 2. t=raction of nitrate-N loss due to Denitrification in the soil is'assumed to be 25%. ' <br /> f Assumption based on work from Hantzsche and Finnemore, 1991. <br /> 3. Estimated deep percolation of rainfall is 7.86 in/yr, see Worksheet No. 1. <br /> .4 <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 /> I <br /> ' l <br /> 1.� <br />! NEIL O.ANDERSON&ASSOC.,INC. >P N <br /> 1 GEOIEOfNGA1 SMVIGES-ENRN EE NG LABORATMES Z 4 <br /> fff n Ha.ctcn ln.Lou.cn a7¢m O � <br /> PLATE 11 <br /> Lr� <br />