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LOGE 1224: Heritage Oak Winery SS/NLS Addendum Page 4 November 23, 2012 According to Mr. Hoffman, the winery is currently open seven days per week. Three employees are present during this time. Two of the employees also live on the Site and, as such, have been excluded from the flow calculation. Mr. Hoffman indicated that up to 15 customers per day visit the winery during the weeSaturdays and Sundays bring up to 50 and 30 customers, respectively. Special events are held 16 times per year, with up to 120 guests present at each event. Each event requires three additional volunteer staff members. The nitrate as nitrogen (N) concentration of these uses is estimated t be 85-mg/ Crites and Tchobanoglous. 1998). In addition to the winery uses, the existing three-bedroom residence is considered for the nitrate loading. We estimate a maximum use of 120 gallo day (gpd) per bedroom for the residence. A typical residential concentration 45 mg/L nitrate as N is selected (Crites and Tchobanoglous, 1998). It is possible a second ng unit could be constructed 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. The maximum average daily flow for the Site was estimated to 751.7 alions per day (Table 2). Through the use of a weighted average, the average Concentra ion I the different effluent flows and concentrations was determined to be 53.1 mg/L-N 751.7 allons per day (Table 3). Please see the following tables that present the information in a abular form.