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Nitrate Loading,Calculations: <br /> Variable Value Units Descriofion <br /> Q 1106.4 gallons per day Effluent flow rate from report <br /> Nw 40.7 mg/L-N Effluent stream concentration from report <br /> A 21.70 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 13.70 inches per year Deep percolation of rain water from report <br /> W 0.69 inches per year Uniform waste water loading for site calculation result <br /> Nc 2.4 mg/L-N RESULT: Long-term average concentration of percolating effluent <br /> Find Variable(VV): <br /> (W) in = (Q) gp_1 x 1 Its x 365 day(s) x I acrie x 12 in x Isjte <br /> yr day 7.48 gal 1 year 43,560 ft' 1 ft (A)acre(s) <br /> 0.69 inryr(site)=1,106 ga//dayx(1 cu-ft/7.48 gals)x(365 days/1 year)x(1 acre/43,560 sq-ft)x(12 in/1 R)x(1 site/21.7 acres) <br /> Hantzsche-Fennemore Equation(Nc): <br /> Nc= WN (1-d)+RNp <br /> W+R <br /> 2.41 mgr--N=((0.69 in/yr x 40.7 mgi x(1-0.25))+(13.7 inyr x 1mg/L-N))/(0.69 inyr+13.7 inyr) <br /> Assumptions: <br /> 1. Total nitrogen concentration of influent waste stream is 40.7 mg1L-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 13.7 in1yr. <br /> 4. Background nitrate-N concentration of rainfall is 1 mg/L-N. <br /> i <br /> Nitrate Loading Calculation Plate No.: 6-1 <br /> (Phase 5) Project No: 1820 <br /> • Lockewood Stables Date: April 13,2018 <br /> LIVE OAK 20703 N.Elliott Rd. <br /> GEO ENVIRONMENTAL INC. Lockeford,CA <br />