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Nitrate Loading Calculations: <br />Variable Value Units Description <br />Q 400 gallons per day Effluent flow rate from report <br />Nw 35 mg/L-N Effluent stream concentration from report <br />A 1.16 acres Site area from report <br />Nb 0.17 mg/L-N Concentration of rainfall from report <br />d 0.25 constant Denitrification factor from report <br />R 9.42 inches per year Recharge rate of percolating waters from report <br />W 4.6 inches per year Uniform waste water loading for site calculation result <br />Nc 8.8 mg/L-N RESULT: Long-term average concentration of percolating effluent <br />Find Variable (146: <br />(W) in. = (Q) gal x x 365 day(s1 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 />4.64 in/yr (site) = 400 gakiay 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 / 1.16 acres) <br />Hantzsche-Fennemore Equation (Nc): <br />t\Jc = VVN„(1-c1)+RN, <br />W+R <br />8.77 mg/L-N = ((4.64 in/yr x 35 mg/L-N x (1 - 0.25)) + (9.42 in/yr x 0.17mg/L-N))/ (4.64 in/yr + 9.42 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 25%. <br />Estimated deep percolation of recharge waters is 9.42 in/yr. <br />Background nitrate-N concentration of recharge waters is 0.17 mg/L-N. <br />Nitrate Loading Calculation <br />Kelly Property <br />2727 E. Acampo Rd. <br />Acampo, CA <br />Plate No.: 13 <br />Project No: 2132 <br /> <br />LIVE OAK <br />GEO ENVIRONMENTAL INC. <br />Date: July 6, 2021 <br />