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t <br /> i <br /> = = ___ = <br /> SIEGERZ ©XI 11 11 1 1 <br /> 315 Wisconsin Ave.• Madison,WI 53703.608-283-6100 <br /> October 9, 1990 <br /> Town of Madison <br /> Building Department <br /> 2120 Fish Hatchery Road <br /> Madison, Wisconsin 53711 <br /> RE: Lot 2 Landmark Place <br /> Existing Storm Sewer Capacity <br /> Building Department: <br /> Per your request at the Planning Commission Meeting on Monday, September 24, <br /> 1990, for an analysis of existing storm sewer capacity serving said property, we submit <br /> the following information. <br /> CRITERIA <br /> 1. Size: <br /> A. Site Size 119,000 s.f. <br /> B. Improved (hard surface) 80,600 s.f. <br /> C. Green Space (existing) 38,400 s.f. <br /> 2. State Code Design Factors: <br /> A. 4" Rain - 100 year storm <br /> B. Hard Surfaces - 32.5 gal/min. <br /> C. Soft Area - 104 gal/min. <br /> 3. Existing Storm Sewer Servicing Site Capacity: <br /> A. N.E. 15" RCP @ 5% 6,500 gal/min. <br /> B. N.E. 15" RCP @ 2% 4,050 gal/min. <br /> C. Total Site Capacity 10,550 gal/min. <br /> DESIGN CALCULATIONS <br /> A. 80,600 s.f. (hard) 2,480 gal/min. <br /> 32.5 gal/min <br /> B. 38.400 s.f. (soft) 369 gal/min. <br /> 104 gal/min. <br />