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Nitrate Loading Calculations: <br />Variable Value Units Description <br />Q 420 gallons per day Effluent flow rate from report <br />Nw 35 mg/L-N Effluent stream concentration from report <br />A 2.01 acres Site area from report <br />Nb 0.30 mg/L-N Concentration of rain water from report <br />d 0.30 constant Denitrification factor from report <br />R 12.60 inches per year Deep percolation of rain water from report <br />W 2.8 inches per year Uniform waste water loading for site calculation result <br />Nc 4.7 mg/L-N RESULT: Long-term average concentration of percolating effluent <br />Find Variable (1,1,): <br />(Vin=(Q)g.ix1ft3 x 365 day(s) x 1 acre x 12 in x 1 site <br />yr day 7.48 gal 1 year 43,560 ft2 1 ft (A) acre(s) <br />2.81 in/yr (site) = 420 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 / 2.01 acres) <br />Hantzsche-Fennemore Equation (Nc): <br />Nc = WNv,(1-d)+RN, <br />W+R <br />4.71 mg/L-N = ((2.81 in/yr x 35 mg/L-N x (1 -0.3)) + (12.6 in/yr x 0.3mg/L-N)) (2.81 in/yr + 12.6 in/yr) <br />Assumptions: <br />Total nitrogen concentration of influent waste stream is 35 mg/L-N If different influent concentrations exist, use weighted average <br />Fraction of nitrate-N loss due to denitrification in the soil is 30%. <br />Estimated deep percolation of rainfall is 12.6 in/yr. <br />Background nitrate-N concentration of rainfall is 0.3 mg/L-N. <br />Nitrate Loading Calculation <br />Smith Property <br />4219 E. Bluestone Ct. <br />Acampo, CA <br /> <br />Plate No.: 16 <br /> <br />Project No: 1929 <br /> <br />LIVE OAK <br />GEO ENVIRONMENTAL INC. <br /> <br />Date: June 27, 2019 <br />