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Nitrate Loading Calculations: <br /> Variable Value Units Description <br /> Q 578.6 gallons per day Effluent flow rate from report <br /> Nw 48.7 mg/L-N Effluent stream concentration from report <br /> A 14.00 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 8.16 inches per year Recharge rate of rainfall from report(evapotranspiration method) <br /> W 0.6 inches per year Uniform waste water loading for site calculation result <br /> Nc 3.3 mg/L-N RESULT. Long-term average concentration of percolating effluent <br /> Find Variable(W <br /> (W) in- = (Q) gal x 1W x 365365 days) 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 /> 0.56 in/yr(site)=579 gai/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 /> N,= WN,,,(1-d)+M <br /> W+R <br /> 3.26 mg4.-N=((0.56 inlyr x 48.7 mg/L-N x(1-0.25))+(8.16 in/yr x 1 mg/L-N))/(0.56 in/yr+8.16 in/yr) <br /> Assumptions: <br /> 1. Total nitrogen concentration of influent waste stream is 48.7 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 8.16 in/yr. <br /> 4. Background nitrate-N concentration of rainfall is 1 mg/L-N. <br /> Plate No.: 17 <br /> Amb, Nitrate Loading Calculation <br /> Affli W- p- Project No: 1917 <br /> Bridge Worship Center <br /> LIVE OAK 11757 N.Davis Rd. Date: May 1,2019 <br /> GEO ENVIRONMENTAL INC. Lodi,CA <br />