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' 05 November 2014 AGE Project No. 14-3119 tPage 12 of 17 ' 9.3. CURRENT ON-SITE SOURCES OF NITRATE Septic systems, rainfall and agriculture (adjacent property to the north) are sources of ' nitrates (fertilizers) are presented on the subject property. The current site usage include a house comprised of four bedrooms, with presumable three bathrooms (sink and toilet) to accommodate the residents. Residential use includes clothes wash, showering/bathing, clothes washing cooking and hand washing. The reasonable or maximum usage of wastewater the three bathroom facility by residents is 120 gallons per day (gpd) per bathroom or a total of 360 gallons per day. The total nitrate-nitrogen (NO3_N) average concentrations in domestic waste ranges ' between 20 to 85 milligram total nitrogen liter (mg/1-N) with an average of 45 mg/I-N when washing and sanitation is considered. ' The weighted average calculation for total nitrogen concentrations for on-site residential flow is proposed as the following: ' Residential volume 360 gallons per day (gpd) Home use concentration 45 mg/1-N (SJCO EHD standard) ' The flow concentration of 13,000 mg/I-N gallon ' 9.4. FUTURE ON- SITE SOURCES OF NITRATE The future use of the site will consist of long-term waste water from a minor commercial ' application. Future development includes the addition of waste water loading into a new septic system under normal operational and limited weekly status related to the use of the property as a minor church development. The two bathrooms (sinks and toilets) ' accommodate the potential employees and the potential church participants and visitors. A kitchen with a dish washer and hand washing sink will also likely be incorporated into the discharge of waste water onto the site. ' The reasonable or maximum usage of wastewater the two bathrooms fac lity by the maximum number of church member and visitors (99) is five gallons per day gpd) per ' person. Other waste should not contain appreciable concentrations of nitrogen (workers washing hands and glassware/kitchen waste). However, based on the type of proposed use of a kitchen, a restaurant value or cocktail lounge of waste water discharge should ' be added to the total volume; an additional 20 gpd per person for once per week, will be added to the total. ' A total of 30_gp4 (99 visitor bathroom trips/day x 5 gpd; 3 worker bathroom/day x 5 gpd and 99 visitor associated with a restaurant/day x 10 gallons per week) is the projected total daily waste quantity (nitrogen loading). 1 Advanced GeoEnviron rental,Inc. t