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September 27, 2000 <br /> Job Number: LG00-312 <br /> Page 9 <br /> Table: Total Estimated Effluent <br /> (see worksheets in Appendix for calculations) <br /> Category Quantity People Weekly effluent quantity per category <br /> estimation* <br /> Monday to Friday 11.25 8 11.25 gallons x 8 staff5 day 450 gallons/week y0 <br /> Office Staff gallons/day/ (Monday Friday) <br /> person <br /> Monday to Friday 11.25 25 11.25 gallons x 25 persons��5 � 1406 <br /> Students gallons/day/ gallons/week <br /> person (Monday through Friday) <br /> 33 <br /> 1856 gallons per week 7days per week <br /> Total: 265 gallons effluent per average) <br /> * Sec; text for estimate. I "s�j <br /> d <br /> Table of Results and Variables Used in the Mass Balance Analysis <br /> for 25 Students and 8 Staff. <br /> Result of Denitrifi- Deep Rain Waste levelRain Acres <br /> Analvsis cation' Percolation Concentration' <br /> 9.87 m -N 15% 6.79 inches 55.1 m N 0.17 m N 2.0 <br /> The result of the nitrate loading analysis indicates that viewing the septic load from twenty <br /> five (25) students and eight (8) staff/employees,the total concentration of nitrates from these two <br /> sources before mixing with ground water is estimated to be 9.87 mg/1-N. This concentration is <br /> below of the maximum contaminate level for drinking water of 10 mg/1-N. The analysis has <br /> w shown that the concentration of nitrate will exceed 10 mg/L-N if more then 25 students or 8 <br /> staff/employees are occupying the facility in the manner described previously. <br /> 7 Hanizshe N.N.,Finnemore,E.J. 1991,Predicating Ground-Water Nitrate-Nitrogen Impacts. Ground <br /> Water, Vol. 30,No. 4. <br /> Z <br /> O w <br /> r <br />