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as solid wastes and disposed of as such. Pursuant to EHD requirements, a food grinder or disposal shall not be allowed to be installed in any kitchen sink, thus disposing of food wastes as solid wastes. Additional wastewater constituents may consist of other liquids to the system, such as coffee,juices, low strength cleaning fluids, etc. No industrial or commercial chemicals, solvents, etc. should be introduced into the wastewater treatment system. From the anticipated characteristics described above,the nitrogen emanating from the entire facility (residential units and the Prayer and Meditation Center) should be a similar concentration than what would normally be found in a typical domestic or household system. The scientific literature cites nitrogen concentrations in domestic septic effluent typically ranging from 17 mg N/L for basins, sinks, etc. to 140 mg N/L for toilet wastes and a very small volume of food wastes that may be introduced into the system through dishwashing. Therefore, considering a 35/55 percent usage for toilet/dishwashing-hand washing water volume, respectively, a value of 60 mg N/L (35% of 140 mg N/L plus 55%of 17 mg N/L) of septic effluent will be used to calculate nitrate-nitrogen loading for this project. A value of 62 mg N/L is typically used for residential calculations, as indicated in the scientific literature(See Kaplan-Septic Systems Handbook, Pg. 147). & CALCULATED NITRATE-NITROGEN LOADING NLS§3.4,3.5,3.6. The calculated nitrate-nitrogen impact to the soil and ultimately to the \--_groundwater is difficult to determine due to the large number of variables involved and variables unknown at this time. These include: 1.) Impact from upgradient nitrate sources, 2.) Variability in wastewater flows, effluent nitrogen concentrations and dilution effects from stormwater recharge, 3.) Changes in groundwater directional flow and elevation, 4.) And of significant importance is not only the denitrification potential but equally important is the diminished nitrification potential within the indigenous clay soil environment. The extremely small pore space within the high clay content soil significantly reduces oxygen content, thus impeding nitrification. The Hantzsche/Finnemore Formula is used below to predict the average resultant concentration of nitrate-nitrogen in effluent recharge water from the proposed unified septic system. The calculations areemsed on a total areal loading basis correlated with the annually projected wastewater flows of ( 300 gpd ery day of the year, as referenced above. These two factors primarily estimate the average �esultant concentration of nitrate-nitrogen in the recharge water. This concentration cannot exceed 10 ppm nitrate-nitrogen(45 ppm as nitrate). CALCULATED NITRATE-NITROGEN LOADING FROM THE COMPLETELY COMBINED AND BUILT-OUT PROJECT: HANTZSCHEIFINNEMORE EQUATION IN,,,(1 - d) +R Ne Nr= (I + R) Page-7-