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Nitrate Loading Calculations: <br /> Variable Value Units Descnption <br /> a 823.50 gallons per day Effluent flow rate from report <br /> Nw 50.0 mg/L-N Effluent stream concentration from report <br /> A 40.00 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 6.58 inches per year Deep percolation of rain water from report <br /> W 0.28 inches per year Uniform waste water loading for site calculation result <br /> Nc 2.47 mglL-N RESULT: Long-term average concentration of percolating effluent <br /> Find Variable(lM: <br /> (W) in = (Q) gal x 1 ft-' x 365 day(s) 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 /> 0.28 in/yr(site)=824 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/40 acres) - <br /> Hantzsche-Fennemore Equation(Nc): <br /> N, = WN„ 1( +�_ <br /> W+R <br /> 2.47 mgt-N=((0.28 in/yr x 50 mg/L-N x(1-0.25)) +(6.58 in/yr x 1 mgt-N))/(0.28 Wyr+6.58 in/yr) - - - <br /> Assumptions: <br /> 1. Total nitrogen concentration of influent waste stream is 50 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 6.58 inlyr. <br /> 4. Background nitrate-N concentration of rainfall is 1 mg/L-N. <br /> Plate No.: 10 <br /> Nitrate Loading Calculation <br /> Kramer Building Conversion Project No.:1120 <br /> LIVE OAK 28313 N.Thomton Rd. Date: June 9,2011 <br /> 6F')ENV,FOt,rs-NAL,NC Thornton,CA <br />