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Nitrate Loading Calculations: <br /> Variable Value Units Descnption <br /> Q 280 gallons per day Effluent flow rate from report <br /> Nw 35 mg/L-N Effluent stream concentration from report <br /> A 2.90 acres Site area from report <br /> Nb 1.00 mg/L-N Concentration of rain water from report <br /> d 0.35 constant Denitrification factor from report <br /> R 8.16 inches per year Recharge rate of rainfall from report(evapotranspiration method) <br /> W 1.3 inches per year Uniform waste water loading for site calculation result <br /> Nc 4.0 mg/L-N RESULT. Long-tens average concentration of percolating effluent <br /> Find Variable(W): <br /> (W) in = (Q) gal x 1W x 365365 day(s) x 1 acre x 12 in x 1 site <br /> yr day 7.48 gal 1 year 43,560 ftz 1 ft (A)acre(s) <br /> 1.3 in/yr(site)=280 gal/day x(1 cu-ft/7.48 gals)x(365 days/1 year)x(1 acre/43,560 sq-ft)x(12 in/1 ft)x(1 site/2.9 acres) <br /> Hantzsche-Fennemore Equation(Nc): <br /> N,= WN,P-d)+RNe <br /> W+R <br /> 3.98 mg/L-N=((1.3 in/yr x 35 mg/L-N x(1-0.35))+(8.16 in/yr x 1 mg1L-N))/(1.3 in/yr+8.16 in/yr) <br /> Assumptions: <br /> 1. Total nitrogen concentration of influent waste stream is 35 mg/L-N. If different influent concentrations exist,use weighted average <br /> 2. Fraction of nitrate-N loss due to denitrification in the soil is 35%. <br /> 3. Estimated deep percolation of rainfall is 8.16 in/yr. <br /> 4. Background nitrate-N concentration of rainfall is 1 mg/L-N. <br /> MIA Nitrate Loading Calculation, Plate No.: 15 <br /> Parcel 1 Project No.: 1916 <br /> Nihad Property <br /> LIVE OAK 6599 E.Foppiano Ln. Date: April 17,2019 <br /> GEO ENVIRONMENTAL INC. Stockton,CA <br />