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No Development <br /> Nitrate Loading Calculations: <br /> Variable Value Units Descnption <br /> Q 0 gallons per day Effluent flow rate from report <br /> Nw 35 mg/L-N Effluent stream concentration from report <br /> A 100.23 acres Site area from report <br /> Nb 0.30 mg/L-N Concentration of rain water from report <br /> d 0.25 constant Denitrification factor from report <br /> R 6.50 inches per year Recharge rate of rainfall from report(evapotranspiration method) <br /> W 0.0 inches per year Uniform waste water loading for site calculation result <br /> Nc 0.3 mg/L-N RESULT: Long-term average concentration of percolating effluent <br /> Find Variable W: <br /> (W) jD_ = (Q) a x 1ft3 x 365 day(s) 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 in/yr(site)=0 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 R)x(1 site/100.23 acres) <br /> Hantzsche-Fennemore Equation(Nc): <br /> N`= WNw(1-d)+RN,, <br /> W+R <br /> 0.3 mg/L-N=((0 intyr x 35 mg/L-N x(1-0.25))+(6.5 in/yr x 0.3mg2-N))/(0 in/yr+6.5 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 25%. <br /> 3. Estimated deep percolation of rainfall is 6.5 in/yr. <br /> 4. Background nitrate-N concentration of rainfall is 0.3 mg/L-N. <br /> Hypothetical Future Homes <br /> Nitrate Loading Calculations: <br /> Variable Value Units Description <br /> Q 500 gallons per day Effluent flow rate from report <br /> Nw 35 mg/L-N Effluent stream concentration from report <br /> A 100.23 acres Site area from report <br /> Nb 0.30 mg/L-N Concentration of rain water from report <br /> d 0.25 constant Denitrification factor from report <br /> R 6.50 inches per year Recharge rate of rainfall from report(evapotranspiration method) <br /> W 0.1 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(lM: <br /> (W) i2 = (Q) gel x 1W x 365 day(s) x 1 acre x 12_L x 1 site <br /> yr day 7.48 gal 1 year 43,560 ftz 1 ft (A)acre(s) <br /> 0.07 intyr(site)=500 gaUday 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/100.23 acres) <br /> Hantzsche-Fennemore Equation(Nc): <br /> Nc= WN,J1-d)+RN,, <br /> W+R <br /> 0.56 mg/L-N=((0.07 in/yr x 35 mg/L-N x(1-0.25))+(6.5 irVyr x 0.3mg/L-N))1(0.07 in/yr+6.5 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 25%. <br /> 3. Estimated deep percolation of rainfall is 6.5 in/yr. <br /> 4. Background nitrate-N concentration of rainfall is 0.3 mg/L-N. <br /> Nitrate Loading Calculations, Plate No.:28 <br /> Parcel 6 <br /> "Harney Lane" Project No: 20-29 <br /> APN 067-040-01 &-09 Date: <br /> October 12 2020 <br /> LIVE OAK 22745&23649 E.Harney Ln. <br /> GEO ENVIRONMENTAL INC. Lodi,CA <br />