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The nitrate concentration of rainfall was estimated to be 1 mg/L-N (Hantzsche and Finnemore, 1992). uantit and Quality-of Domestic Wastewater The estimated sewage flow rates for various uses are available from a number of references. The uses presented below were guided by the San Joaquin County On-Site Wastewater Disposal Standards (2003), Crites and Tchobanoglous (1998), and EPA (1980). The references indicate that 13 gallons for each employee is typical for an office worker, and 5 gallons is typical for a bar customer; these rates were used for the winery facility (Crites and Tchobanoglous, 1998). The estimated flow values discussed here should not be used for the design and sizing of the septic system. The design and sizing of the septic system should utilize the San Joaquin County Environmental Health On-Site Wastewater Disposal Standards which incorporate peak and surge flow factors. The estimates used in the On-Site Wastewater Disposal Standards may be greater than those discussed here. According to the Site Approval Application, Phases I and II of the project will involve no employees or customers. Phase III, to take place within five years, will include a wine tasting building to be open four days a week. At this time, two employees and up to 20 customers per day would be anticipated. No marketing or special events are planned; however, the possibility of future special events is discussed in Appendix 6. �. The nitrate as nitrogen (N) concentration of these uses is estimated to be 85-mg/L (Crites and Tchobanoglous, 1998). L 3� In addition to the winery uses, the existing three-bedroom residence is considered for the nitrate loading. We estimate a maximum use of 120 gallons per day per bedroom �3 3� for the residence. A typical residential concentration of 45 mg/L of nitrate as N is selected (Crites and Tchobanoglous, 1998). Although there are no plans for residential construction, it is possible that a second dwelling unit could be built on the Site in the future. The second dwelling unit can be up to two bedrooms. This potential future use is considered. No contributions from the future vineyard irrigation or soil amendments are considered for the Hantzsche/Finnemore method. It is reasonably assumed that the irrigation and soil amendments would be applied at close to agronomic rates for a net balance of plant irrigation and nutrients. LOGE 1402 Page 11