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effluent recharge water. As calculated below, the property has been assessed on a total areal loading basis of 7 acres representing the Project Size, correlated with the 300 gallons total per_dayfrom both restrooms, as noted above, with each toilet at 150 gals/day per EHD Standards. These two factors primarily dictate the average resultant concentration of nitrate-nitrogen in the recharge water,which cannot exceed 10 ppm nitrate-nitrogen (45 ppm as nitrate). Additionally, as a highly significant safety factor,wastewater flows are based on every day of the year and not on the relatively short operational duration of a few months as indicated on the Site Approval Application. The following calculations demonstrate the resultant effluent recharge water from the project will be substantially below pm NO3-N, or 45 ppm NO3- /NLS§3.4,3.5,3.6 ,PREDICTED NITRATE-NITROGEN LOADING FROM THE PROPOSED COMPLETE BUILD-OUT RIVER OAK ORCHARD WALNUT PACKAGING FACILITY AND THE PRECISIO HULLING FACILITY: HANTZSCHEIFINNEMORE EQUATION IN�(1 - d)+RNb Nr= (I + R) Where: Nr= Resultant average concentration of nitrate-nitrogen in recharge water-(ppm NO3-N) I = Volume rate of wastewater entering the soil averaged over the gross developed area in inches per yr Nw= Total nitrogen concentration of wastewater in mg N/L d = Fraction(%)of nitrate-nitrogen loss due to denitrification in the soil R = Average recharge rate of rainfall - inches per yr NLS§3.2 Nb= Background nitrate-nitrogen concentration of rainfall recharge,exclusive of wastewater influences (ppm NO3-N) Values and Assumptions I= 300 2od t 365 d/ ,r= 109,500 gals=total WW/yr= 14,639 cu ft = 0.58 in. 7 Ac x 43,560 sq ft/Ac x(1 ft/l2 in.) Nw = 103 mg N/L 20%reduction from the septic tank =(1-0.2)103 = 82 mg N/L d = Assume 20%due to the fine-grained soil at the potential soil-effluent interface soil chemistry results. R = 12 in/yr. Nb= Assumed to be 0.1 ppm NO3-N 0.58 in/yr(82 mg,N/L)(1 -0,20).+(12 in/yr x 0.1 nw,/L) Nr (0.58 in/yr+ 12 in/yr) Nr — 3.1 :e-d m as ' rate-nitrogen(NO3-N)or 14.0 ppm as nitrate(NO3) The ca nitrate loading concentration in the recharge effluent from the Men's and Women's Restroom is calculated to be under the Maximum Contaminant Level limit for nitrate in drinking water, and is equal to the existing nitrate concentration in the on-site well water. The variables used in the calculations above are conservative. For example, the use of 103 mg N/L, is a much higher nitrogen concentration than those concentrations published from household or domestic sources. From the May 8, 2003 Symposium"Onsite Wastewater Treatment-Nitrogen Removal," 8