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Nitrate Loadtng Calculations: <br /> Variable Value Units Description <br /> Q 1491.7 gallons per day Effluent flow rate from report <br /> NW 72.8 mg/L-N Effluent stream concentration from report <br /> A 3.61 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 13.7 inches per year Deep percolation of rain water from report <br /> W 5.55 inches per year Uniform waste water loading for site calculation result <br /> Nc 14.4 mg/L-N RESULT: Long-term average concentration of percolating effluent <br /> Find Variable(Wl: <br /> (W) la = (Q) gal x 1-W x 365 day(s) x 1 acre x 12_jn- x Is te <br /> yr day 7.48 gal 1 year 43,560 ft2 1 ft (A)acre(s) <br /> 5.55 in/yr(site)=1,492 gal/dayx(1 W-ft/7.48 gals)x(365 days)1 year)x(1 acre/43,560 sq-ft)x(12 in/1 ft)x(1 site/3.61 acres) <br /> Hantzsche-Fennemore Equation(NO <br /> N,= WIN (1-d)+RN. <br /> W+R <br /> 14.36 mgt--N=((5.55 inlyr x 72.8 mgiL-N x(1-0.35))+(13.7 inyr x lmgrL-N))/(5.55 inlyr+13.7 inlyr) <br /> Assumptions: <br /> 1. Total nitrogen concentration of influent waste stream is 72.8 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 13.7 inlyr. <br /> 4. Background nitrate-N concentration of rainfall is 1 mg/L-N. <br /> Nitrate Loading Calculation Plate No.: 12 <br /> (Existing Facilities) project No: 1711 <br /> Prof leet Truck Lube Date: March 9,2017 <br /> LIVE OAK 24511 N.Highway 99 W.Frontage Rd. <br /> GEO ENVIRONMENTAL INC. Acamp0,CA <br />