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Nitrate Loading Calculations. <br /> Variable Value Units Description <br /> Q 4335.5 gallons per day Effluent flow rate from report <br /> Nw 57.9 mg/L-N Effluent stream concentration from report <br /> A 57.22 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 1.02 inches per year Uniform waste water loading for site calculation result <br /> Nc 6.69 mg/L-N RESULT: Long-term average concentration of percolating effluent <br /> Find Variable (VV): <br /> (W) in = (Q) gal x 1 ft3 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 /> 13-),L- . x)22 i . <br /> 1.02 irVyr(site)=4,336 gal/day x(1 cu-ft/7.48 gals)x(365 days/1 year)x(1 acre 143,560 sq-ft)x(12 in/1 ft)x(1 site/57.22 acres) <br /> Hantzsche-Fennemore Equation (Nc): <br /> N,= WNW(1-d)+RN4 <br /> W+R <br /> (6-69 mg/L-N=((1.02 in/yr x 57.9 mg/L-N x(1-0.25))+(6.58 in/yr x 1mg/L-N))/(1.02 in/yr+6.58 in/yr) <br /> Assumptions: <br /> 1. Total nitrogen concentration of influent waste stream is 57.9 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 in/yr. <br /> 4. Background nitrate-N concentration of rainfall is 1 mg/L-N. <br /> Nitrate Loading Calculation Plate No.: 13 <br /> Phillips Farms Project No.: 1508 <br /> -� <br /> LIVE OAK 14647 N. Ray Rd. Date: May 13, 2015 <br /> Lodi, CA <br /> GEC ENVIRONMENTAL INC. <br />