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The nitrate concentration of rainfall was estimated to be g L-N (Hantzsche and Finnemore, 1992). Quantity 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 C3✓3� 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 Sewage Standards which incorporate peak and surge flow factors. The estimates used in the Sewage Standards may be greater than those discussed here. According to the Site Approval Application and information provided by Mr. Kidder, the proposed small winery will be open seven days a week with one owner present. No additional employees are anticipated. Customers will be present at the tasting room four days per week, Thursday through Sunday; up to 10 customers are anticipated per (34� day . No winery special events or marketing events are noted. The nitrate as nitrogen (N) concentration of these uses is estimated to (e:8:57-mg/L:) (Crites and Tchobanoglous, 1998). In addition to the winery uses, the existing three-bedroom residence is considered for ,5) the nitrate loading. We estimate a maximum use of 120 gallons. er day per bedroom for the residence. A typical residential concentration of 5 mg/L f nitrate as N is selected (Crites and Tchobanoglous, 1998). It is possible eco dwelling unit could C3 ) 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 vineyard irrigation or soil amendments are considered for the Hantzsche/Finnemore method. It is reasonably assumed that the irrigation and soil 2 �3 3� amendments would be applied at close to agronomic rates for a net balance of plant irrigation and nutrients. LOGE1005 Page 10