Laserfiche WebLink
field will may undergo a reduction between 10 percent to 35 percent. Soils with higher <br /> `„ clay content, moist soil conditions, high pH, and organic material denitrify by about 35 <br /> percent, and soils with high sand content and fast percolation rates tend to denitrify at a <br /> lower rate of about 10 per <br /> A denitrification factor f�percent was selected for the Site because of the fine- <br /> grained nature of the sos. <br /> Nitrate Loading Estimate <br /> A nitrate loading scenario was employed to determine the impact from the proposed <br /> project to ground water. The scenario utilizes the variables discussed previously, which <br /> represent the estimated conditions and uses associated with this project. The following <br /> table presents a summary of the assumptions for the nitrate loading calculation for the <br /> Site, as presented in Plate 11. <br /> Table 6. Assumptions for Nitrate Loading Calculation <br /> Variable Value Units Description <br /> Q276 god Effluent flow rate <br /> Nw 85 mg/L-N Efflu ream concentration <br /> A 30 acres Site ares <br /> Nb 1.00 mg/L-N Concentration of rain <br /> d 0.2 constant Denitrification factor <br /> i <br /> inches per <br /> R 3.10 year Deep percolation of rain water _ <br /> inches per <br /> W 0.12 year Uniform waste water loading for calculation <br /> The details of the nitrate loading calculation are included) in Plate 11. The results of the <br /> calculation are presented in the following table. <br /> Table 7. Result of Nitrate Loading Calculation <br /> Variable Value Units Description <br /> Long-term average concentration of percolating <br /> Nc 3.42', mg/L-N effluent <br /> �" LOGE 1123 Page 12 <br />