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Nitrate Mass Balance Calculations <br /> PONDI-Winery <br /> i� <br /> l <br /> Nitrate Loading Calculations: <br /> Variable Value Units Description <br /> Q 487.50 gallons per day Effluent flow rate from report <br /> Nw 45.6 mg/L-N Effluent stream concentration from report <br /> A 2.69 acres Site area from report <br /> Nb 1.00 mg/L-N Concentration of rain water from report <br /> d 0.20 constant Denitrification factor from report <br /> R 6.57 inches per year Deep percolation of rain water from report <br /> W 2.44 inches per year Uniform waste water loading for site calculation result <br /> Mc 10.60 mg1L-N RESULT. Long-term average concentration of percolating effluent <br /> Find Variable(M <br /> (W) in = (Q) gal x 1 W x 365 day(s) x 1 acre x 12 in x 1 site <br /> yr day 7.48 aal 1 vear 43.560 ft' 1 ft (A)acre(s) <br /> (pS2f(0477-- F 3�'S x ,)x-24 x iZ-- Y 0,'N?Y� Z <br /> 2.44 in/yr(site)=488 gal/day x(f cu-ft/7.48 gals)x(365 days/1 year)x(i acre 143,560 sq-ft)x(12 in/1 ft)x(1 site 12.69 acres) z 1(371.2 <br /> o./-3*Y dar�a 3 0-��l 2 <br /> Find Concentration Nc(Nantzsche-Fennemore Equation) <br /> N�= WN,„ 1�_ d)+RN_ti <br /> W+R <br /> 10.6 mg/L-N=((2.44 in/yr x 45.6 mg/L-N x(1-0.2))+(6.57 in/yr x lmg/L-N))1(2.44 infyr+6.57 in/yr) <br /> %-V. -. 0 <br /> Assumptions: 0.6 <br /> 1. Total nitrogen concentration of influent waste stream is 45.6 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 20%. <br /> 3. Estimated deep percolation of rainfall is 6.57 inlyr. <br /> 4. Background nitrate-N concentration of rainfall is 1 mg/L-N. <br />