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Nitrate Loading Calculations: <br /> Variable Value Units Description <br /> Q 2880.0 gallons per day Effluent flow rate from report <br /> Nw 35.0 mg/L-N Effluent stream cencentration from report <br /> A 4.04 acres Site area from report <br /> Nb 1.00 mg/L-N Concentration of rein water from report <br /> d 0.30 constant Denitrification factor from report <br /> R 1.67 inches per year Deep percolation of rain water from report <br /> W 9.58 inches per year Uniform waste water loading for site calculation result <br /> Nc 21.01 mg/L-N RESULT: Long-term average concentration of percolating effluent <br /> Find Variable W: <br /> (IM in = (Q) gel 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 ff2 1 ft (A)acre(s) <br /> 9.58 in/yr(site)=2,880 gal/day x(i cu-ft/7.48 gals)x(365 daysr 1 year)x(1 acre/43,560 sq-q)x(12 in/1 ft)x(1 site/4.04 acres) <br /> Hantzsche-Fennemore Equation(Nc): <br /> • Nr= WN 1-dwf )+RN. <br /> W+R <br /> 21.01 mgrL-N=((9.58 in/yr x 35 mgrL-N x(1-0.3))+(1.67 in(yr x 1 mgrL-N))/(9.58 in/yr+1,67 in(yr) <br /> Assumptions: <br /> 1. Total nitrogen concentration of influent waste stream is 35 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 30%. <br /> 3. Estimated deep percolation of rainfall is 1.67 in/yr. <br /> 4. Background nitrate-N concentration of rainfall is 1 mg/L-N. <br /> Nitrate Loading Calculation Plate No.: ii <br /> Project No: 1623 <br /> Chashmawala Property Date: December 30, 2016 <br /> LIVE OAK 25087 S. Lammers Rd. <br /> GEO ENVIRONMENTAL INC. Tracy, CA <br />