Laserfiche WebLink
Nitrate Loading Estimate <br /> Nitrate loading scenarios were employed to determine the impact from the project to <br /> ground water. The scenarios utilizes the variables discussed previously, which <br /> represent the estimated conditions and uses associated with this project. <br /> The assumptions and details of the nitrate loading calculations for the Site are <br /> presented in Plate 11 through 13. The following table presents a summary of the <br /> assumptions for the calculations: <br /> Table 2. Assumptions for Nitrate Loading Calculation <br /> Variable Value Units Description <br /> 250 gpd Effluent flow rate, 4-bedroom house <br /> Q 300 gpd Effluent flow rate, 5-bedroom house <br /> 350 gpd Effluent flow rate, 6-bedroom house <br /> Nw 35 mg/L-N Effluent stream concentration <br /> A 1.55 acres Site area <br /> Nb 0.3 mg/L-N Concentration of rain <br /> d 0.35 constant Denitrification factor <br /> R 3.00 yea es per Deep percolation of rain water <br /> 2.2 inches per Uniform waste water loading (calculated), 4-BR <br /> W 2.6 Uniform waste water loading (calculated), 5-BR <br /> 3.0 year Uniform waste water loading (calculated), 6-BR <br /> The results of the calculations are presented in the following table. <br /> Table 3. Result of Nitrate Loading Calculation <br /> Variable Value Units Description <br /> 9.7 mg/L-N Long-term average concentration of percolating <br /> effluent, 4-bedroom house <br /> Nc 10.7 mg/L-N Long-term average concentration of percolating <br /> effluent, 5-bedroom house <br /> 11.6 mg/L-N Long-term average concentration of percolating <br /> effluent, 6-bedroom house <br /> LOGE 20-21 Page 9 <br />