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Nitrate Loading Calculations: <br /> Variable Value Units Description <br /> Q 720.1 gallons per day Effluent flow rate from report <br /> Nw 46.1 mg/L-N Effluent stream concentration from report <br /> A 14.0 acres Site area from report <br /> Nb 1.00 mg/L-N Concentration of rain water from report <br /> d 0.25 constant Denitrification factor from report <br /> R 3.12 inches per year Recharge rate of rainfall from report(evapotranspiration method) <br /> W 0.7 inches per year Uniform waste water loading for site calculation result <br /> Nc 7.1 mg/L-N RESULT: Long-term average concentration of percolating effluent <br /> Find Variable W <br /> (W) in = (Q) x 1 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 /> 0.69 in/yr(site)=720 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/14 acres) <br /> Hantzsche-Fennemore Equation(Nc): <br /> Nc= WK,(1-d)+M <br /> W+R <br /> 7.09 mg/L-N=((0.69 in/yr x 46.1 mg/L-N x(1-0.25))+(3.12 in/yr x 1 mg/L-N))/(0.69 in/yr+3.12 in/yr) <br /> Assumptions: <br /> 1. Total nitrogen concentration of influent waste stream is 46.1 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 3.12 in/yr. <br /> 4. Background nitrate-N concentration of rainfall is 1 mg/L-N. <br /> 4wal Nitrate Loading Calculation Plate No.: 16 <br /> jvpp� Project No: 1908 <br /> Bella Gardens Wine Cellar Date: May 15,2019 <br /> LIVE OAK 23563 S.Manteca Rd. <br /> GEO ENVIRONMENTAL INC. Manteca,CA <br />