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Nitrate loading Calculations: <br /> Vadable va/U6, UDA2 DescrinSon <br /> Q 400 gallons per day Effluent flow rate from report <br /> Nw 35 mg/L-N Effluent stream concentration from report <br /> A 1.03 acres Site area from report <br /> Nb 0.103 mg/L-N Concentration of rain water from report <br /> d 0.35 constant Denitrification factor from report <br /> R 3.91 inches per year Recharge rate of rainfall from report(evapotranspiration method) <br /> W 5.2 inches per year Uniform waste water loading for site calculation result <br /> Nc 13.1 mg/L-N RESULT: Long-term average concentration of percolating effluent <br /> Find Variable&40: <br /> (W) jp._ = (Q) gal x 1 ft3 x 365365 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 /> 5.22 inlyr(site)=400 gallday x(1 cu-ftl7.46 gals)x(365 days/1 year)x(1 acre l43,560 sq-ft)x(12 in l 1 ft)x(1 site l l.03 acres) <br /> Hantzsche-Fennemore Equation(ft): <br /> N�=Wy,,(1-d)+RN,. <br /> W+R <br /> 13.05 mgrL-N=((5.22 inlyr x 35 mg/L-N x(1-0.35))+(3.91 inlyr x 0.103mgA.-N))l(5.22 inlyr+3.91 inlyr) <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 35%. <br /> 3. Estimated deep percolation of rainfall is 3.91 in/yr. <br /> 4. Background nitrate-N concentration of rainfall is 0.103 mg/L-N. <br /> Nitrate Loading Calculation Plate No.: 16 <br /> 40 Project No: 2614 <br /> Pacheco Property Date: April 9,2026 <br /> LIVE OAK 172 N.Patton Ave. <br /> GEO ENVIRONMENTAL INC. Stockton,CA <br />