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Nitrate Mass Balance Calculation <br /> Data Input: <br /> Effluent Quantity(Q): 191.43 gals/day Concentration Rain(Nb): 1.00 mg/L-N <br /> Effluent Stream (N,): 85.00 mg/L-N Denitrification(d): 25.0% <br /> Site Area(A): 7.0 Acres Deep Perc.of Rain(R): 5.29 in/yr <br /> Waste Loading (W): 0.37 in/yr <br /> Result: <br /> Mass Balance(Nj: 5.1 mg/L-N <br /> MCL Drinking Water Nitrate as N: 10.0 mg/L-N Waste Loading(W): 0.37 in/yr <br /> Percent of MCL Nitrate as N 51% <br /> Equations: <br /> (W) in = (Q) coal x 1 ft3 x 365 day x 1 acre x 12 in x 1 Find W <br /> yr day 7.48 gal 1 year 43,560 ft2 1 ft (A) acre <br /> M 0.37in/yr(site)=191 gal/day x(1 cu-ft/7.48 gals)x(365 days/1 year)x(1 acre 143,560 sq-ft)x(12 in/1 ft)x(1 site 17 acres)) <br /> OOOD 22-1 )r 12- k , I LPLgsl <br /> N - WN 1-d +RNb Hantzsche-Fennemore Equation(Nc) O <br /> -_W _ <br /> a W+R <br /> 23.5$aS 2�, / S•% <br /> 5.08 mg/L-N=((0.37 in/yr x 85 mg/L-N x(1-0.25))+(5.29 in/yr x 1 mg1L-N))/(0.37 in/yr+5.29 in/yr) <br /> Variables: 3l <br /> Nc=Average nitrate-N concentration(mg/1)of combined effluent and rainfall percolate(5.08 mg/L-N). <br /> W= Uniform waste water loading for study area(in/yr)(0.37 inches/year). <br /> Nw=Total nitrate-N concentration of waste water percolate(85 mg/L-N). <br /> d=Fraction of nitrate-N loss due to denitrification in the soil(25%). <br /> R=Uniform deep percolation of rainfall(5.29 in/yr). <br /> Nb=Background nitrate-N concentration of rainfall(1 mg/L-N). <br /> Assumptions: <br /> 1. Total nitrogen concentration of waste stream based on estimate of 85 mg/L-N. <br /> 2. Fraction of nitrate-N loss due to denitrification in the soil is assumed to be 25%. <br /> 3. Estimated deep percolation of rainfall is 5.29 in/yr,see deep percolation of rain worksheet. <br /> 4. Assume background nitrate-N concentration of rainfall is 1 mg/L-N. <br /> DATE: MARCH 2015 <br /> NEIL O. ANDERSON Nitrate Loading Calculation JOBNUMBER: NA157000 <br /> A N D A S S O C I A T E S SCALE:Not to scale <br /> AlFerraconCOMPANY Odyssey Landscape DRAWN BY: TS <br /> 902 Industrial Way,Lodi,CA 95240 5400 West Highway 12 CHECKED BY: HS <br /> Y Lodi California <br /> 209-367-3701 SHEET: 8 <br /> cecvd3^102011rel Aro �-.-awssyskeu <br />