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Nitrate Loading Calculations: <br />Find Variable (M: <br />Units <br />gallons per day <br />mg/L-N <br />acres <br />mg/L-N <br />constant <br />inches per year <br />inches per year <br />mg/L-N <br />Description <br />Effluent flow rate from report <br />Effluent stream concentration from report <br />Site area from report <br />Concentration of rain water from report <br />Denitrification factor from report <br />Recharge rate of rainfall from report (evapotranspiration method) <br />Uniform waste water loading for site calculation result <br />RESULT: Long-term average concentration of percolating effluent <br />Variable <br />Nw <br />A <br />Nb <br />Nc <br />Value <br />276.2 <br />85 <br />16.82 <br />0.17 <br />0.25 <br />6.24 <br />0.2 <br />2.3 <br />(N) g = (Q) gaj <br />yr day <br />x 1 ft3 <br />7.48 gal <br />x 365 day(s) <br />1 year <br />x 1 acre x 12 in x 1 site <br /> <br />43,560 ft2 1 ft (A) acre(s) <br />0.22 in/yr (site) = 276 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 / 16.82 acres) <br />Hantzsche-Fennemore Equation (Nc): <br />Nc = WN„(1-d)+RNi, <br />W+R <br />2.34 mg/L-N = ((0.22 in/yr x 85 mg/L-N x (1 - 0.25)) + (6.24 in/yr x 0.17mg/L-N))/ (0.22 in/yr + 6.24 in/yr) <br />Assumptions: <br />Total nitrogen concentration of influent waste stream is 85 mg/L-N. If different influent concentrations exist, use weighted average <br />Fraction of nitrate-N loss due to denitrification in the soil is 25%. <br />Estimated deep percolation of rainfall is 6.24 in/yr. <br />Background nitrate-N concentration of rainfall is 0.17 mg/L-N. <br />Nitrate Loading Calculation <br />Delta Packing <br />6021 E. Kettleman Ln. <br />Lodi, CA <br />Plate No.: 15 <br />Project No: 20-33 <br /> <br />LIVE OAK <br />GEO ENVIRONMENTAL INC. <br />Date: June 19,2021 <br />