SU0009799 SSNL - Laserfiche WebLink

Home Browse Search

05 November 2014 AGE Project No. 14-3119 Page 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 with four or six bedrooms, with presumable two 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 six bathroom facility by residents is 120 gallons per day (gpd) per bathroom or a total of 720 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/1-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 720 gallons per day (gpd) • Home use concentration 45 mg/1-N (SJCO EHD standard) • The flow concentration of 13,000 mg/1-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 will not be included in this plan for site use. The reasonable or maximum usage of wastewater the two bathrooms facility 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). A total of 30 gpd (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). 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/1-N when washing and sanitation is considered. It is estimated the proposed commercial nitrogen Advanced GeoGnvironmental,Inc.