Laserfiche WebLink
Nitrate Loadinq Calculations: <br /> Variable Value Units Description <br /> Q 560 gallons per day Effluent flow rate from report <br /> Nw 35 mg/L-N Effluent stream concentration from report <br /> A 5.35 acres Site area from report <br /> Nb 1.00 mg/L-N Concentration of rain water from report <br /> d 0.35 constant Denitrification factor from report <br /> R 12.60 inches per year Recharge rate of percolating waters from report(evapotranspiration method) <br /> W 1.4 inches per year Uniform waste water loading for site calculation result <br /> Nc 3.2 mg/L-N RESULT: Long-term average concentration of percolating effluent <br /> Find Variable(IM: <br /> (W) in = (Q) gall x 11 W 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 /> 1.41 in/yr(site)=560 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 ft)x(1 site/5.35 acres) <br /> Hantzsche-Fennemore Equation(Nc): <br /> N,= WN,(1-d)+W <br /> W+R <br /> 3.18 mg/L-N=((1.41 in/yr x 35 mg/L-N x(1-0.35))+(12.6 in/yr x 1 mg/L-N))/(1.41 in/yr+12.6 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 35%. <br /> 3. Estimated deep percolation of rainfall is 12.6 in/yr. <br /> 4. Background nitrate-N concentration of rainfall is 1 mg/L-N. <br /> Plate No.: 13 <br /> Nitrate Loading Calculation <br /> Project No.: 1918 <br /> Brum Property Date: April 19,2019 <br /> LIVE OAK 24478 N.Janant Ct. <br /> GEO ENVIRONMENTAL INC. Acampo,CA <br />