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w <br /> Nitrate Loading Calculations: . <br /> Variable Value Units Description <br /> Q 242.0 gallons per day Effluent flow rate from report <br /> Nw 85.00 mg/L-N Effluent stream concentration from report <br /> A 6.40 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 4.17 inches per year Deep percolation of rain water from report <br /> W 0.51 inches per year Uniform waste water loading for site calculation result <br /> Nc 7.82 mg1L-N RESULT: Long-term average concentration of percolating effluent <br /> Find_Variable(W): <br /> F (W) in = (Q) gal x 1 ft-- x 365 day(s) x 1 acre x 12 in x 1 site o aa� ✓ <br /> yr day 7.48 aal 1 vear 43.560 W 1 ft (A)acre(s) <br /> 0.51 in/yr(site)=242 gal/day x(1 cu-ft 17.48 gals)x(365 days/1 year)x(1 acre/43,560 sq-tt)x(12 in/1 ft)x(1 site/6.4 acres) <br /> Hantzsche-Fennemore Equation(NO <br /> N,= WNW 1S -d)+R� <br /> W+R - <br /> ' 3O 35 ° f q. <br /> 7.82 mgt-N=((0.51 inlyr x 85 mg/L-N x(1-0.25))+(4.17 in/yr x Img/L-N))/(0.51 Wyr+4.17 in/yr) r 0 3$ <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. t=raction of nitrate-N loss due to denitrification in the soil is 25%. <br /> 3. Estimated deep percolation of rainfall is 4.17 in/yr. <br /> a <br /> 4. Background nitrate-N concentration of rainfall is 1 mg/L-N. <br /> Plate No.: 10 <br /> Nitrate Loading Calculation <br /> -VINW- I Project No.: 1025 <br /> Cheema Freightiines <br /> LIVE QAK 4258&4274S.Highway 99 Date: November 10,2010 <br /> GEO ENVIRONMENTAL INC. Mcr,y�"nr CA <br />