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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />A 200-gallon per day per household estimate is low in comparison with most year-round <br />communities in Colorado (disregarding irrigation use) and actual consumption rates lower than <br />this may reflect the less than 100% occupancy of dwellings, along with aggressive water <br />conservation efforts, and the use of septic tanks throughout the District. It is probable that, in <br />the future, the number of permanent or year-round residents will become an increasingly higher <br />percentage of the total population. <br /> <br />The maximum water use the District can plan for has been set by the Augmentation Plan. The <br />ultimate development of 350 EQR would create an average day demand of 70,000 gpd, or an <br />equivalent average daily demand of between 48 and 49 gpm. A flow of 50 gpm has been used <br />for the designs presented in this report. <br /> <br />The following design criteria are typically used for sizing water supply facilities: <br />· Average annual daily use is the basis for raw water supply for water rights purposes. <br />· Water treatment plants and pump stations are sized to deliver maximum day demand. <br />· Peak hourly demands are supplied from treated water storage. <br /> <br />The District has approximately 1,220,000 gallons of storage, which is significantly greater than <br />normal for a system of this size. This is essentially available for meeting peak day use (note <br />that the system has not been designed to provide fire protection). This volume of water would <br />provide in the neighborhood of 100 gpd/EQR for a 35 day period. Therefore, the use of the <br />average day use of 200 gpd/EQR should provide adequate flow to cover normally expected <br />periods of high demand. <br /> <br />PUMPING RATES <br /> <br />The District has stated, based on information regarding stream flows and diversion rights, that <br />the 70,000 gpd average demand identified above should be converted into a pumping rate that <br />must be supplied to the raw water storage system by assuming the storage reservoir can only <br />be filled during one-third of the year to match times of high flows in the Little Thompson River. <br />During the high flow season, 50 gpm would go directly to treatment and distribution, in addition <br />to 100 gpm (sufficient water to provide supplies for the rest of the year) that would go into raw <br />water storage. During the remaining two-thirds of the year, the 50 gpm supplied to the <br /> <br />2 <br />