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Nitrate Loading Calculations: <br />Variable <br />Value <br />Units <br />Description <br />Q <br />150.7 <br />gallons per day <br />Effluent flow rate from report <br />Nw <br />35.2 <br />mg/L-N <br />Effluent stream concentration from report <br />A <br />2.011 <br />acres <br />Site area from report <br />Nb <br />0.15 <br />mg/L-N <br />Concentration of rain water from report <br />d <br />0.35 <br />constant <br />Denitrification factor from report <br />R <br />9.42 <br />inches per year <br />Recharge rate of rainfall from report (evapotranspiration method) <br />W <br />1.0 <br />inches per year <br />Uniform waste water loading for site calculation result <br />Nc <br />2.3 <br />mg/L-N <br />RESULT: Long-term average concentration of percolating effluent <br />Find Variable (W <br />(W) in = (Q) gal x 1W x 365 day(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 />1.01 in/yr (site) = 151 gal/day x (1 cu -rt / 7.48 gals) x (365 days/ 1 year) x (1 acre 143,560 sq -rt) x (12 in / 1 ft) x (1 site / 2.011 acres) <br />Hantzsche-Fennemore Equation (Nc): <br />N�= WN(1-d)+RN. <br />W+R <br />2.35 mg/L-N = ((1.01 in/yr x 35.2 mg/L-N x (1 - 0.35)) + (9.42 in/yr x 0.15mg/L-N)) / (1.01 in/yr + 9.42 in/yr) <br />Assumptions: <br />1. Total nitrogen concentration of influent waste stream is 35.2 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 9.42 in/yr. <br />4. Background nitrate -N concentration of rainfall is 0.15 mg/L-N. <br />�S <br />LIVE OAK <br />GEO ENVIRONMENTAL INC. <br />Nitrate Loading Calculation, <br />Parcel 1 <br />Marsili Property <br />3212 & 3225 E. Woodson Rd. <br />Acampo, CA <br />Plate No.: 14 <br />Project No: 2150 <br />Date: November 5, 2021 <br />