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RECEIVED <br /> Nitrate Loading Calculations JAN 13 2021 <br /> 20449 E.Oakwood Road ENVIRONMENTAL HEALTH <br /> Stockton,CA.95215 DEPARTMENT <br /> 1/13/2021 <br /> Concentration Rain(Nb): <br /> Variable Value Units Description <br /> Effluent Quanity(Q): 250 gpd effluent flow rate <br /> Effluent Stream (NW): 45 mg/L-N effluent stream concentration <br /> Site Area(A): 2 Acres Site area <br /> Concentration Rain (Nb): 1 mg/L-N Concentration of rain <br /> Denitrification(d): 0.150 constant Denitrification Factor <br /> Deep Perc. Of Rain( R) 8.74 In./yr. Deep percolation of rain water <br /> Table 1-Nitrate Loading Data <br /> Waste Loading(W): 1.68 In./yr. Uniform Waste Water Loading <br /> (W)in/yr=(Q)gal/day X 1 ft3/7.48 gal X 365 day/lyear X 1 acre/43,560 ft2 X 12 in/1 ft X 1/(A)acre <br /> Nitrate Loading Calculations <br /> Nitrate loading Calculation(Nc): 7.01 mg/L-N jAverage Nitrate Conentration <br /> Nc=WN_(1-d)+RN,, Hantzche-Finnemore Equation <br /> W+r <br /> Water Balance-Recharge Analysis-Lodi,California(ETO Climate zone 12) <br /> 1 2 3 4 5 6 <br /> Avg. Run- Available Potential Net Rainfall <br /> off Volume Precip. ETO Actual ET recharge <br /> Avg.Precipitaton(In/Month) (fraction) (In-Month) (In/Month) (In/Month) (In-Month) <br /> Dec 4.61 0.00 3.43 1.05 0.46 2.97 <br /> Jan 1.20 0.00 2.94 1.22 0.54 2.40 <br /> Feb 0.00 0.00 2.71 3.07 1.35 1.36 <br /> Mar 2.30 0.00 1.31 3.38 1.49 0.00 <br /> Apr 1.41 0.00 0.61 5.32 2.34 0.00 <br /> May 0.12 0.00 0.15 7.13 3.14 0.00 <br /> Jun 0.00 0.00 0.03 8.25 3.63 0.00 <br /> Jul 0.00 0.00 0.04 8.33 3.67 0.00 <br /> Aug 0.00 0.00 0.27 6.95 3.06 0.00 <br /> Sep 0.00 0.00 0.93 5.06 2.23 0.00 <br /> Oct 0.00 0.00 1.93 3.77 1.66 0.00 <br /> Nov 0.16 0.00 2.92 2.08 0.92 2.00 <br /> Sum 9.80 17.27 1 55.61 24.47 8.74 <br /> Table 2-Deep Percolation of Rain <br /> Deep Perc.Of Rain( R) 8.74 In./yr. Deep percolation of rain water <br />