Laserfiche WebLink
Nitrate Loading Calculations: <br />Variable Value Units Description <br />Q 55.7 gallons per day Effluent flow rate from report <br />Nw 85 mg/L-N Effluent stream concentration from report <br />A 0.60 acres Site area from report <br />Nb 0.17 mg/L-N Concentration of rain water from report <br />d 0.25 constant Denitrification factor from report <br />R 9.42 inches per year Recharge rate of rainfall from report (evapotranspiration method) <br />W 1.2 inches per year Uniform waste water loading for site calculation result <br />Nc 7.6 mg/L-N RESULT: Long-term average concentration of percolating effluent <br />Find Variable (140: <br />(VV) = (Q) x 1 ft3 x 365 dav(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 />1.25 in/yr (site) = 56 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 / 0.6 acres) <br />Hantzsche-Fennemore Equation (Nc): <br />Nc = WRA,(1-d)+RN, <br />W+R <br />7.6/ mg/L-N = ((1.25 in/yr x 85 mg/L-N x (1 - 0.25)) + (9.42 in/yr x 0.17mg/L-N))/ (1.25 in/yr + 9.42 in/yr) <br />Assumptions: <br />Total nitrogen concentration of influent waste stream is 85 mg/L-N. If different influent concentrations exist, use weighted average <br />Fraction of nitrate-N loss due to denitrification in the soil is 25%. <br />Estimated deep percolation of rainfall is 9.42 in/yr. <br />Background nitrate-N concentration of rainfall is 0.17 mg/L-N. <br />Nitrate Loading Calculation <br />Eclipse Capital Property <br />26090 N. Thornton Rd. <br />Thornton, CA <br />Plate No.: 13 <br />Project No: 2130 <br /> <br />LIVE OAK <br />GEO ENVIRONMENTAL INC. <br />Date: June 23, 2021 <br />