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Nitrate Loading Calculations: <br />Variable Value Units Description <br />Q 450 gallons per day Effluent flow rate from report <br />Nw 35 mg/L-N Effluent stream concentration from report <br />A 3.00 acres Site area from report <br />Nb 0.17 mg/L-N Concentration of rain water from report <br />d 0.35 constant Denitrification factor from report <br />R 3.23 inches per year Recharge rate of rainfall from report (evapotranspiration method) <br />W 2.0 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 AM: <br />(W) j = (Q) up] x JJ 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 />2.02 in/yr (site) = 450 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 / 3 acres) <br />Hantzsche-Fennemore Equation (Nc): <br />= WNI(1-d)+RNt, <br />W+R <br />8.85 mg/L-N = ((2.02 in/yr x 35 mg/L-N x (1 - 0.35)) + (3.23 in/yr x 0.17mg/L-N))/ (2.02 in/yr + 3.23 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 35%. <br />Estimated deep percolation of rainfall is 3.23 in/yr. <br />Background nitrate-N concentration of rainfall is 0.17 mg/L-N. <br />Nitrate Loading Calculation <br />Sweeny Property <br />31296 E. Rossier Rd. <br />Escalon, CA <br />Plate No.: 14 <br />Project No: 2148 <br /> <br />LIVE OAK <br />GEO ENVIRONMENTAL INC. <br />Date: October 18, 2021 <br />