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December 18,2001 <br /> Job Number: LGO1-375 <br /> Page 10 <br /> Table 5. <br /> Total Estimated Effluent. <br /> (see worksheets in Appendix for calculations) <br /> Category Quantity People Daily effluent quantity for each analysis <br /> Employees 15 gallons/day/person 12 15 gallons/day/person x 12 people= 180 gallons/day <br /> Customers 5 gallons/day/person 10 5 gallons/day/person x 10 people=50 gallons/day <br /> Total Quantity: 230 gallons/day(Monday thru Friday) <br /> r <br /> Average Daily Flow(Weekly): 230 gallons/day x 5 days/7 days = 164 gallons/day <br /> The following table is a summary of the Nitrate Loading Analysis (see Plates 8 & 9) <br /> which considers nitrate sources from septic systems and rainfall. -, <br /> Table 6. ;y <br /> Summary of Nitrate Mass Balance Analysis. <br /> Result: Parcel Denitrification Deep Rain Waste Rain Quantity <br /> Percolating Size FactorPercolation level 7,1 Concentration' of <br /> Nitrate (ac) ** Effluent <br /> Concentration <br /> * <br /> 7.53 mg/1-N 1.15 25% 6.84 inches 45 mg/1-N 0.17 mg/1-N 164 gal/day <br /> * Note: Maximum drinking water standard for Nitrate is 10 mg/L-N(45 mg/L as NO3). <br /> **Note: Waste level of total nitrogen in sewage is 45 mg/L-N— not to be confused with the MCL for drinking <br /> water of 45 mg/L as NO3. <br /> The result of the nitrate loading analysis using the Hantzshe-Finnemore approach and <br /> assumptions previously discussed has shown that the proposed project will not cause a buildup of <br /> nitrates in the ground water above the maximum contaminate level (MCL) for drinking water of <br /> 10 mg/L-N. <br /> VIII. CONCLtiSIONS AND RECOMMENDATIONS <br /> In conclusion, a satisfactory percolation rate was achieved in the deep percolation test <br /> within the proposed disposal field. The septic permit review has shown that conventional septic <br /> systems are used in the area. The depth to ground water was found recently to range between 60 <br /> to 79 feet for the area. The nitrate level measured in the water well was found to be 0.598 mg/L- <br /> ?pERSO <br /> 1 <br /> w <br /> r O � <br /> 7ysOL♦ <br />