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Nitrate Loadina Calculations: <br /> Variable Value Units Description <br /> Q 420.0 gallons per day Effluent flow rate from report <br /> Nw 35.0 mg/L-N Effluent stream concentration from report <br /> A 0.30 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 10.32 inches per year Deep percolation of rain water from report <br /> W 18.82 inches per year Uniform waste water loading for site calculation result <br /> No 17.31 mg/L-N RESULT: Long-tam average concentration of percolating effluent <br /> Find Variable(Wi: <br /> (W) Irl = (Q) g6( It -1 W x 365 day(s) it 1 acre_ x 12j1L x 1 site <br /> yr day 7.48 gal 1 year 43,560 ft2 1 ft (A)acre(s) <br /> 18.82 in/yr(site)=420 gaAday x(1 cu-@/7.48 gals)x(365 days/1 year)x(1 acre/43,560 sq-ft)x(12 in/11t)x(1 Site/0.3 acres) <br /> Hantzsche-Fennemore Equation(Nc): <br /> • Nc= WN_(1-d)+RW <br /> W+R <br /> 17.31 mg/L-N=((18.82 in(yr x 35 mgtL-N x(1-0.25))+(10.32 intyr x 1mgvL-N))/(18.82 inlr+10.32 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 denmifcation in the soil is 25%. <br /> 3. Estimated deep percolation of rainfall is 10.32 in/yr. <br /> 4. Background nitrate-N concentration of rainfall is 1 mg/L-N. <br /> Plate No.: 8 <br /> Nitrate Loading Calculation <br /> Project No: 1802 <br /> Gomez Property <br /> LIVE OAK 826 W. Bowman Rd. Date: January 24,2018 <br /> GEO ENVIRONMENTAL INC. French Camp,CA <br />