Laserfiche WebLink
Nitrate Mass Balance Calculation <br /> Parcel No. 4, 5.4 Acres <br /> ' Data Input: <br /> i <br /> site Area(A): 5.4 Acres <br /> Effluent Quantity (Q): 250 gals/day Concentration Rain (Nb): 0.97 mg/L-N <br /> Effluent Stream (NM,): 45.00 mglL-N Denitrification (d): 25.0% l <br /> i Waste Loading (VII): 0.62 in/yr Deep Pere. of Rain (R): 7.86 in <br /> Result: <br /> i Mass Balance (NG): 2.63 mg/L-N <br /> MCI-Drinking Water: 10. mg/L-N <br /> Percent of MGL: 26% <br /> Equations: <br /> (VII) in = (Q) gal x 1 W x 36_..5 day x '€1 acre x 12 in x 1 <br /> yr day 7.48 gal 1 year 43,560 fta 1 ft (A) acres <br /> Nr= WN-(1-d)+RN,, <br /> W+R <br /> Variables: <br /> Nc=Average nitrate-N concentration (mg/1) of combined effluent and rainfall percolate (2.63 mg/L-N). <br /> W= Uniform waste water loading for study area (In/yr) <br /> W is 150 gallons per day on a 5.4 acre site (0.62 in/yr). <br /> Nw=Total nitrate-N concentration of waste water percolate (45 mg/L-N). <br /> i d = Fraction of nitrate-N loss due to denitrification in the soil (25°/0). <br /> R= Uniform deep percolation of rainfall (7.86 in/yr). :F i <br /> Nb= Background nitrate-N concentration of rainfall (0.17 mg/l`L N). <br /> Assumptions: <br /> 1. Nitrate-N concentration of waste stream based on estimate6 of 45 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 /> 1F <br /> 3. Estimated deep percolation of rainfall is 7.86 in/yr, see Worksheet No. 1. <br /> i <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 /> 1 <br /> r <br /> la; '*E R's y <br /> NEIL O.ANDERSON S ASSOC.,INC. N <br /> Cf07EO1NCA{-SERVICES-22 <br /> F1wea,m LoA.CJ1 Y',QAG <br /> PLATE 12 <br />