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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 0.98 acres Site area from report <br /> Nb 0.3 mg/L-N Concentration of rain water from report <br /> d 0.25 constant Denitrification factor from report <br /> R 12.60 inches per year Recharge rate of rainfall from report(evapotranspiration method) <br /> W 9.6 inches per year Uniform waste water loading for site calculation result <br /> Nc 11.5 mg/L-N RESULT. Long-term average concentration of percolating effluent <br /> Find Variable(lM: <br /> (W) in = (Q) gal x 1W 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 /> 9.6 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/0.98 acres) <br /> Hantzsche-Fennemore Equation(Nc): <br /> Ne,= WIN (1-d)+RNe <br /> W+R <br /> 11.52 mg/L-N=((9.6 in/yr x 35 mg/L-N x(1-0.25))+(12.6 in/yr x 0.3mg/L-N))/(9.6 in/yr+12.6 irVyr) <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 12.6 in/yr. <br /> 4. Background nitrate-N concentration of rainfall is 0.3 mg/L-N. <br /> dl Nitrate Loading Calculation Plate No.: 15 <br /> 4OW <br /> Galarneau Property Project No: 1936 <br /> LIVE OAK 830 W.Woodbridge Rd. Date: July 25,2019 <br /> GEO ENVIRONMENTAL INC. Lodi,CA <br />