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the event of any interruption of the normal supply. The amount of this type <br />of storage is dependent upon many factors which vary with each community <br />under consideration. For instance, if a community is served from a single <br />source, the time for which storage should be provided would be equal to the <br />estimated time required to repair a breakdown in any section of the system. <br />Some of the factors affecting the amount of emergency storage required are: <br />1. Number of independent raw water sources. <br />2; Flexibility of the treatment plant. <br />3. Number of transmission lines from the plant to the <br />distribution system. <br />4. Probability of a fire demand and a heavy domestic <br />demand occurring simultaneously. <br />5. Availability of city forces to do emergency repair work. <br />Analyzing each of the above factors, it can be shown that Loveland needs <br />only a minimum of storage for this purpose. Although a single source of raw <br />water is being utilized, the city controls sufficient water which can be <br />diverted to the Big Thompson River to assure an adequate supply of raw water. <br />The most vulnerable section of the system is the single pipe from the river <br />diversion structure at the Home Supply Dam to a point, some 100 feet distant, <br />where two pipelines continue to the plant. Some consideration should be <br />given to this possible danger point, <br />A rapid -sand filter plant, such as Loveland operates, is an extremely <br />flexible unit and should never be completely out of service. The existing <br />multiple -pipe transmission system minimizes the possibility of a complete <br />stoppage at any time. In a community the size of Loveland, the probability <br />of a concurrence of a heavy fire demand and an extreme domestic demand is <br />- 19 - <br />