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il II II II II II I II Recent conversations with a representative of NBFU indicates that the above requirements are in the process of being modified and that the following figures would be reasonable for use in a 20 year design for Canon City and surrounding area with a projected population of 32,000: *Fire Flow gpm Downtown Business District 4000 Residential Areas 1500 *At a residual main pressure of at least 20 psi. Duration Hours 5 2 Design Flow. The distribution system should be c~pable of providing either peak hour consumption or the required fire flow plus maximum daily consumption at adequate pressures. II For all facilities proposed in this study a 20 year design period was used. Therefore, the following table reflects the design flow that the distribution system should be capable of hand1ins in 1993 based on the more optimistic population projection (Case 2). II I Max. Day. Peak Hour Fire Flow Design Flow Location GPM GPM GPM GPM Downtown Business District 14,900 22,350 4,000 22,350 Residential Areas 14,900 22,350 1,500 22,350 [I I I I I I I I Storage. Storage tanks or reservoirs are provided in distribution systems as equalizing storage, to furnish water during emergencies such as fire fighting, power failure, or equipment breakdown and to maintain adequate pressures within the system. With properly sized and located storage the cost of treatment facilities and pumping stations can be reduced because these facilities will not be required to handle peak flows. The storage tank(s) will act as an equalizing factor during these periods of high demand. 2-6