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Nitrate Loading Calculations: <br /> Variable Value Units Description <br /> Q 92.9 gallons per day Effluent flow rate from report <br /> Nw 85 mg/L-N Effluent stream concentration from report <br /> A 37.9 acres Site area from report <br /> Nb 0.3 mg/L-N Concentration of rain water from report <br /> d 0.35 constant Denitrification factor from report <br /> R 6.17 inches per year Rate of recharge of percolating waters from report <br /> W 0.0 inches per year Uniform waste water loading for site calculation result <br /> Nc 0.6 mg/L-N RESULT: Long-term average concentration of percolating effluent <br /> Find Variable(W): <br /> (W) in = (Q) gl x 1 ft3 x 36 x 1 acre x 12 in x 1 site <br /> yr day 7.48 gal 1 year 43,560 ftz 1 ft (A)acre(s) <br /> 0.03 irVyr(site)=93 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/37.9 acres) <br /> Hantzsche-Fennemore Equation(Nc): <br /> N�= WN (1-d)+RNA <br /> W+R <br /> 0.59 mg/L-N=((0.03 in/yr x 85 mg/L-N x(1-0.35))+(6.17 in/yr x 0.3mg/L-N))/(0.03 in/yr+6.17 in/yr) <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 35%. <br /> 3. Estimated deep percolation of rainfall is 6.17 in/yr. <br /> 4. Background nitrate-N concentration of rainfall is 0.3 mg/L-N. <br /> Plate No.: 14 <br /> Nitrate Loading Calculation <br /> JetMulch Project No: 1849 <br /> LIVE OAK 261 os s.Patterson Pass Rd. <br /> GEO ENVIRONMENTAL INC. Tracy,CA <br />