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The nitrate concentration of rainfall was estimated to be 1 mg/L-N (Hantzsche and Finnemore, 1992). Al'�uantityand QualitV 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 (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 Sewage Standards which incorporate peak and surge flow factors. The estimates used in the Sewage Standards may be greater than those discussed here. The winery will operate from A ril to December eac year. One employee will work a 5- day workweek April through Dec er. The ry will be open Friday, Saturday, and Sunday during this time period. Four (4) marketing events will occur per year. At each marketing event, up to 50 persons may attend. The nitrate as nitrogen (N) concentration of these uses is estimated to be 85-mg/L (Crites and Tchobanoglous, 1998). In addition to the winery uses, an occupied three (3) bedroom residence exists on the Site. Though not planned, a potential second dwelling unit of two (2) bedrooms could legally be built on the property in the future. Considering the maximum potential build out of residential units, we estimate a maximum use of 120 gallons per day per bedroom. A typical residential concentration of 45 mg7L of nitrate as N is selected (Crites and Tchobanoglous, 1998). No contribution from the vineyard irrigation or any 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 *46. mg/L-N allons per day (gpd). Through the use of a weighted average, the average tion of all the different effluent flows and concentrations was determined to bat 623.2 gallons per day. Please see the following tables that present the information in a tabular form. LOGE0911 page 10