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Nitrate Loading Calculations: <br /> Variable Value Units Description <br /> Q 166.7 gallons per day Effluent flow rate from report <br /> Nw 40.0 mg/L-N Effluent stream concentration from report <br /> A 6.44 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 9.42 inches per year Recharge rate of rainfall from report(evapotranspiration method) <br /> W 0.35 inches per year Uniform waste water loading for site calculation result <br /> Nc 1.1 mg/L-N RESULT. Long-term average concentration of percolating effluent <br /> Find Variable(IM: <br /> (W) in = (Q) gal x 1 ft3 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 /> 0.35 in/yr(site)=167 gaUday x(1 cu-ft/7.48 gals)x(365 days/1 year)x(1 acre/43,560 sq-ft)x(12 011 R)x(1 site 16.44 acres) <br /> Hantzsche-Fennemore Equation(NW: <br /> N,,= WNW(1-d)+RN.. <br /> W+R <br /> 1.09 mg/L-N=((0.35 in/yr x 40 mg/L-N x(1-0.35))+(9.42 in/yr x 0.17mg/L-N))/(0.35 inyr+9.42 in/yr) <br /> Assumptions: <br /> 1. Total nitrogen concentration of influent waste stream is 40 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 9.42 intyr. <br /> 4. Background nitrate-N concentration of rainfall is 0.17 mg/L-N. <br /> Plate No.:11 <br /> Nitrate Loading Calculation <br /> Project No: 2110 <br /> Terminous RV&Boat Storage <br /> LIVE OAK 15010 N.Glasscock Rd. Date: March 17,2021 <br /> GEO ENVIRONMENTAL INC. Lodi,CA <br />