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New Moose Lodge SS/NLS Addendum Page 2 of 4 Our Project Number: E07175A November 26, 2007 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 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 (includes sportsman's club workers), and 5 gallons is typical for each customer (member) (Crites and Tchobanoglous, 1998). The following table presents the septic waste water uses associated with the Site. The rates presented from the references provide general guidance but do not always reflect a match in usage. Careful examination, professional judgment, and experience are necessary to select a reasonable flow rate estimate. The flow rates selected for the uses associated with this project are presented next. Table 1. Typical Quantity of Effluent. Category Total People Average Quantity per Average Daily Flow per Parcel per Day Person Members— 40 5 gal/day/member (40 members * 5 gpd * 5/7) = 143 gpd weekday Members— 150 5 gal/day/member (150 members* 5 gpd * 2/7) = 214 gpd weekend Employees— 4 13 gal/day/employee (4 employees* 13 gpd * 5/7) = 37 gpd weekday Employees— 6 13 gal/day/employee (6 employees* 13 gpd * 2/7) = 22 gpd weekend Commercial N/A 125 gal/day 125 gpd Kitchen —� Gathering (two 150 5 gal/day/member (150 members* 5 gpd * 24/365) = 49 gpd per month) New Year's Eve 210 5 gal/day/member (210 members * 5 gpd * 1/365) = 3 gpd Event(annual) Note: gpd is gallons per day. 5/7 is a conversion for the 5-day week. 2/7 is a conversion for the weekend. 24/365 is a conversion for a twice-monthly event. 1/365 is a conversion for an annual event. For the subject property, the total daily waste water quantity is 593 gallons per day. Of these 593 gallons, 468 gallons are attributed to restroom use, and 125 gallons are attributed to the commercial kitchen. The average total nitrogen concentration of domestic waste water is normally considered to be 20-85 mg/L-N with 35 to 45 mg/L-N being typical (Crites and Tchobanoglous, 1998). It is estimated that commercial use will have higher concentrations of total nitrogen when compared to residential use; in this case, 85 mg/L-N has been selected for restroom use. The 125 gpd '404 902 Industrial Way•Lodi.CA 95240•209.367.3701 •Fax 209.369.4228 02007 Nei!O.Anderson&Associates.Inc.