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March 19, 2004 ` NOA Project Number: E0415A Page 4 Table 1. Septic System Permit Summary. Address,Date Tank Capacity Lines,Length,Pits Comments 2580 Teepee Drive, 1600 gal One 75-ft leach line and one New Installation. 10/20/87,Cal-Cooler 48-in diameter by 25-ft deep Site. seepage pit. 2601 Teepee Drive, 1600 gal One 100-ft leach line and one New Installation. 4/2/84,Cal-Cooler Site. 48-in diameter by 25-ft deep seepage pit.. 2601 Teepee Drive, None Four 60-in diameter by 25-ft Tank rinse water drain. 7/3/84,Cal-Cooler Site. deep seepage pits. 2342 North Teepee Site Address,no permits located. Drive 2540 North Teepee 1600 gal One 50-ft leach line and one New Installation. Drive,4/25/85 33-in diameter by 25-ft deep seepage pit. 2540 North Teepee 1200 gal Two 45-ft leach lines and Repair. Drive, 5/19/97 two 48-in diameter by 25-ft deep seepage pits. 2556 North Teepee 1600 gal One 50-ft leach line and one New Installation. Drive,9/13/83 33-inch diameter by 25-ft deep seepage pit. 3.6 Expected On-Site Maximum Septic Tank Usage Ten(10) employees will work in the building Monday through Friday from eight to five, r- according to information reviewed at the San Joaquin County Planning Department on March 9, 2004. 'w 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). According to the San Joaquin County Sewage Standards, the office use rate should be 30 gallons per day. 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) mentions that the typical use rate is 13 gallons per day for an office worker. The EPA(1980)Design Manual (Table 4-6)indicates the typical use rate is L14.5 gallons per day for an office worker.