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Nitrate Loading Calculations: <br /> Variable Value Units Description <br /> Q 66.8 gallons per day Effluent flow rate from report <br /> Nw 85 mg/L-N Effluent stream concentration from report <br /> A 25.12 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 8.16 inches per year Deep percolation of rain water from report <br /> W 0.0 inches per year Uniform waste water loading for site calculation result <br /> Nc 1.3 mg/L-N RESULT: Long-term average concentration of percolating effluent <br /> Find Variable(lam: <br /> (W) LrL = (Q) g l x1 ft3 x 365 day(s) x 1 acre x 12 in x 1 site <br /> yr day 7.48 gal 1 year 43,560 ft' 1 ft (A)acre(s) <br /> 0.04 in/yr(site)=67 gal/day x(1 cu-/t/7.48 gals)x(365 days/1 year)x(1 acre/43,560 sq-tt)x(12 in/1/t)x(1 site/25.12 acres) <br /> Hantzsche-Fennemore Equation(Nc): <br /> N�= WN (1-d)+RN.. <br /> W+R <br /> 1 27 mg/L-N=((0.04 in/yr x 85 mg1L-N x(1-0.25))+(8.16 in/yr x 1 mg/L-N))/(0.04 in/yr+8.16 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 25%. <br /> 3 Estimated deep percolation of rainfall is 8.16 in/yr. <br /> 4. Background nitrate-N concentration of rainfall is 1 mg/L-N. <br /> Nitrate Loading Calculation, plate No.: 3 <br /> Current Predicted Employees project No: 1848 <br /> Proposed Ford Construction Facility <br /> LIVE OAK 12505 E.Brandt St. Date: May 6,2019 <br /> GEO ENVIRONMENTAL INC. Locketord,CA <br />