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Wastewater Flow Characteristics It is assumed there will be no cooking, or food production in the two referenced Buildings. Therefore,there should be no concentrated organic loading. The characteristics of the wastewater flow will be predominately blackwater from toilets,with a comparatively small volume of graywater from sinks, or other sources of graywater. Additional wastewater constituents may consist of coffee,juices or other similar type liquids to the system. No industrial or commercial chemicals, solvents, etc. are to be introduced into the septic system. From the anticipated wastewater characteristics described above,the nitrogen emanating from the project may be at a higher concentration than what would normally be found in a typical domestic or household system. This can be attributed to the lack of a dilution effect that graywater from showers, laundry, and dishwashing would provide from a household. The scientific literature cites nitrogen concentrations in residential septic effluent typically ranging from 17 mg NIL for basins, sinks,etc. to 140 mg NIL for toilet wastes. Therefore, considering a 70130 percent usage for toilet water volume and sink water volume, respectively, a value of 103 mg NIL of septic effluent will be used to calculate nitrate-nitrogen loading for this project. A value of 66 mg NIL is typically used for residential calculations, as indicated in the scientific literature. B. CALCULATED NITRATE-NITROGEN LOADING 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, nitrogen concentrations and dilution effects from effluent and stormwater recharge, 3.) Changes in groundwater directional flow and elevation,4.) Denitrification potential within the soil environment and within the confined and unconfined aquifers and 5.) Potential landscape uptake of nitrogen. Various scientific methods exist to estimate nitrate-nitrogen loading. This Study will use the Hantzsche/Finnemore Formula to predict the average resultant concentration of nitrate-nitrogen in effluent recharge water. As calculated below,the property has been assessed on a total areal loading basis of 20 acres for the Tracy Public Cemetery facility exclusively, correlated with the 600 gallons per day from all restrooms, as noted above (a men's and a women's toilet in the Office Building and a men's and a women's toilet in the Maintenance Building, 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). The following calculations demonstrate the resultant effluent recharge water from the project will not exceed 10 ppm NO3-N, or 45 ppm NO3. 7 Chesney Consulting