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Plate 3. <br /> Medina Property <br /> Nitrate Mass Balance Calculation <br /> (CIMIS Evapotranspiration Method) <br /> Nitrate Loading Calculations: <br /> Variable Value Units Descriotion <br /> Q 560 gallons per day Effluent flow rate from report <br /> Nw 35 mg/L-N Effluent stream concentration from report <br /> A 1.65 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 percolating waters from report(evapotranspiration method) <br /> W 4.6 inches per year Uniform waste water loading for site calculation result <br /> Nc 8.8 mglL-N RESULT: Long-term average concentration of percolating effluent <br /> Find Variable(W): <br /> (W) j L _ (Q) gal x x 365 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 /> 4.56 imyr(site)=560 gal/day x(f cu-ft/7.48 gals)z(365 days/1 year)x(1 acre/43,560 sq-ft)x(12 in/1 ft)x(1 site/1.65 acres) <br /> Hantzsche-Fennemore Eguation(Nc): <br /> N,= WN /1�+RN. <br /> W+R <br /> 8.8 mg1L-N=((4.56 in/yr x 35 mg/L-N x(1-0.35))+(8.16 in/yr x lmglL-N))/(4.56 in/yr+8.16 Wyr) <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 intyr. <br /> 4. Background nitrate-N concentration of rainfall is 1 mg/L-N. <br /> LOGE 1902 March 20,2019 <br />