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LOGE 1907: Bavaro SS/NLS Addendum 3 Page 7 <br /> March 15, 2019 <br /> Table 3. Inputs and Results for Nitrate Loading Calculation, <br /> Recharge Derived from Evapotranspiration Reduction Method <br /> Variable Value Units Description <br /> Q 420 gpd Effluent flow rate <br /> Nw 35 mg/L-N Effluent stream concentration <br /> A 5.0 acres Site area <br /> Nb 1.00 mg/L-N Concentration of rain <br /> d 0.20 constant Denitrification factor <br /> R 3.64 inches per year Recharge rate of percolating waters <br /> W 1.1 inches per year Uniform waste water loading (calculated) <br /> Nc 7.4 mg/L-N Long-term average concentration of percolating <br /> effluent <br /> Reduced Rainfall Method <br /> The following table presents a summary of the assumptions for, and results of, the <br /> nitrate loading calculation for the Site when recharge is derived by the reduced rainfall <br /> method, as presented in Plate 3. This method has been accepted by the San Joaquin <br /> County Environmental Health Department from January 2017 through January 2019. <br /> Table 4. Inputs and Results for Nitrate Loading Calculation, <br /> Recharge Derived from Reduced Rainfall Method <br /> Variable Value Units Description <br /> Q 420 gpd Effluent flow rate <br /> Nw 35 mg/L-N Effluent stream concentration <br /> A 5.0 acres Site area <br /> Nb 1.00 mg/L-N Concentration of rain <br /> d 0.20 constant Denitrification factor <br /> R 9.3 inches per year Recharge rate of percolating waters <br /> W 1.1 inches per year Uniform waste water loading (calculated) <br /> Nc 3.9 mg/L-N Long-term average concentration of percolating <br /> effluent <br />