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Nitrate Loading Calculations: <br /> Variable Value Units Description <br /> Q 700 gallons per day Effluent flow rate from report <br /> Nw 35 mg/L-N Effluent stream concentration from report <br /> A 0.50 acres Site area from report <br /> Nb 1.00 mg/L-N Concentration of rain water from report <br /> d 0.35 constant Denitrification factor from report <br /> R 7.4 inches per year Deep percolation of rain water from report <br /> W 18.8 inches per year Uniform wastewater loading for site calculation result <br /> Nc 16.6 mg/L-N RESULT: Long-term average concentration of percolating effluent <br /> Find Variable(lM: <br /> (W) in = (Q) gall x 11 W x 365 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 /> 18.82 in/yr(site)=700 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 10.5 acres) <br /> Hantzsche-Fennemore Equation(Nc): <br /> N�= WN,.,(1-d)+M <br /> W+R f <br /> A. <br /> 16.61 mg/L-N=018.82 in/yr x 35 mg/L-N x(1-0.35))+�7.4 in/yr x 1 mg/L-N))/(18.82 in/yr+7.4 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 35%. <br /> 3. Estimated deep percolation of rainfall is 7.4 in/yr. <br /> 4. Background nitrate-N concentration of rainfall is 1 mg/L-N. <br /> Nitrate Loading Calculation Plate No.: 8 <br /> Project No: 1840 <br /> Marrun Property <br /> LIVE OAK 11851 W.Valpico Rd. Date: September 26,2018 <br /> GEO ENVIRONMENTAL INC. Tracy,CA <br />