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Find Effluent Rate Q and Concentration Niv: <br /> Nitrate Loading Calculations. <br /> Variable Value Units Description <br /> Q 35.7 gallons per day Effluent flow rate from report <br /> Nw 85.00 mg/L-N Effluent stream concentration from report <br /> A 0.89 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 5.98 inches per year Deep percolation of rain water from report <br /> W 0.54 inches per year Uniform waste water loading for site calculation result <br /> Nc 6.18 mglL-N RESULT: Long-term average concentration of percolating effluent <br /> Find Variable(lM: <br /> (W) in = (Q) gal x 1 tt'- x 365 da s x 1 acre x 12 in x 1 site <br /> yr day 7.48 oal 1 vear 43.560 ft' 1 ft (A)acre(s) <br /> r/-&17-93201 faS 1 &937 O.oyoyz? <br /> 0.54 in/yr(site) =36 gal/dey x(1 cu-RI7.48 gals)x(365 days/1 year)x(1 acre/43,560 sq-ft)x(12 m/1 R)x(1 site/0.89 acres) <br /> 0.1334096 .dao02�9 /✓7-3595 <br /> Hantzsche-Fennemore Equation(Nc): <br /> N,= WN„ 1j -i)+R- <br /> W+R <br /> 3-'/ZS- f 3.98 <br /> 8.19 mg/L-N=((0.54 in/yr z 85 mgt-N x(1-0.25))+(5.98 inryr x 1 mgvL-N))/(0.54 in/yr+5.98 in/yr) <br /> d.a5 <br /> Assumptions: <br /> 1. Total nitrogen concentration of influent waste stream is 85 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 5.98 in/yr. <br /> 4. Background nitrate-N concentration of rainfall is 1 mg/L-N. <br /> Plate No.: 12 <br /> Nitrate Loading Calculation <br /> Project No.: 0914 <br /> Church of God (7th Day) <br /> LIVE OAK 3929 Hubbard Ave. Date: October 30, 2009 <br /> GEO ENVIRONMENTAL INC. Stockton, CA 95215 <br />