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a.� ..r August 3, 2004 NOA Project Number: E04081A The residence on the Site has three bedrooms, which have the potential to be occupied by an estimated four people. A second dwelling unit may be placed on the Site at some point. A second dwelling unit is up to two bedrooms in size and has the potential to be occupied by an estimated three people. Therefore, a total of seven residents will be used to calculate the residential septic tank usage. According to Mr. Peterson, no special events will-be held on the Site, and no customers will come to the winery. �— The estimated sewage flow rates for use categories are available from a number of references. The uses presented below were guided by the San Joaquin County Sewage Standards (2003), Crites and Tchobanoglous (1998), and EPA (1980). The San Joaquin County Sewage Standards does not provide a flow rate for residential use. The San Joaquin County Sewage Standards are based on the 1963 Manual of Septic Tank Practice. The text from Crites and Tchobanoglous (1998) (Table 4-2) indicates that the typical residential use rate is 70 gallons per day and 13 gallons per day for an office worker. The EPA (1980) Design Manual (Table 4-6) indicates the typical use rate is 45 gallons per day for a resident and 14.5 gallons per day for an office worker. Since the Crites and Tchobanoglous (1998) information is the most current available, our office believes it provides the best estimate of waste water flow for both the residential and office worker categories. '�K No information was available from the San Joaquin County Community Development �K Department regarding the winery. Therefore the following table presents the septic waste water uses associated with the facility. The rates presented from the references provide general guidance but do not always reflect a match in usage. -Careful examination, professional judgement, and experience are necessary to select a reasonable flow rate estimate. The flow rates selected for the uses associated with this facility are presented in the following table. 5