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Nitrate Loading Calculations: <br /> Venable Value Units Oescrip8on <br /> Q 350 gallons per day Effluent flow rate from report <br /> Nw 35 mg/L-N Effluent stream concentration from report <br /> A 2 acres Site area from report <br /> Nb 0.103 mg/L-N Concentration of rain water from report <br /> d 0.25 constant Denitrification factor from report <br /> R 8.75 inches per year Recharge rate of rainfall from report(evapotranspiration method) <br /> W 2.4 inches per year Uniform waste water loading for site calculation result <br /> Nc 5.6 mg/L-N RESULT: Long-term average concentration of percolating effluent <br /> Find Variable(lM: <br /> (W) _ (Q) " x � x 365365 day(s) x 1 acre x 12 in x 1 site <br /> yr day 7.48 gal 1 year 43,560 ftz 1 ft (A)acre(s) <br /> 2.35 in/yr(site)=350 gal/day x(1 cu-ft/7.48 gals)x(365 days!1 year)x(i acre/43,560 sq-ft)x(12 in/1 ft)x(1 site/2 acres) <br /> Hantzsche-Fennemore Equation(No); <br /> N,_-WN41-d)+RN.. <br /> W+R <br /> 5.64 mg/L-N=((2.35 in/yr x 35 mg/L-N x(1-0.25))+(8.75 in/yr x 0.103mg1L-N))I(2.35 in1yr+8.75 in/yr) <br /> Assumptions, <br /> 1. Total nitrogen concentration of influent waste stream is 35 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 25%. <br /> 3. Estimated deep percolation of rainfall is 8.75 in/yr. <br /> 4. Background nitrate-N concentration of rainfall is 0.103 mg/L-N. <br /> Nitrate Loading Calculation Plate No.: 16 <br /> Project No: 2622 <br /> Ferriere/Mendoza Property <br /> LIVE OAK 18895&18899 E.Sierra View Ct. Date: June 4,2026 <br /> C EO ENVIRONMENTAL INC. Clements,CA <br />