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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 />II <br />I <br /> <br />The structural condition of the Cortez treatment facility is an item of major <br /> <br /> <br />concern. Differential settlement has occurred along the length of the building, <br /> <br /> <br />causing the clarifier to pitch six inches, and resulting in the formation of large <br /> <br /> <br />cracks along the structural support above the pipe gallery. Investigations in <br /> <br /> <br />1974 revealed that the settlement process was slowing. However, the effects of <br /> <br /> <br />past settlements pose a threat to the long-range structural integrity of the <br /> <br /> <br />existing facility. <br /> <br />The Cortez treatment facility appears to be at the end of ita economic life. <br /> <br /> <br />Considering defects in the existing plant condition, it would be impractical to <br /> <br /> <br />perform the needed extensive renovation. <br /> <br />Treated water storage consists of two 2-million gallon steel tanks adjacent to <br /> <br /> <br />the plant. From the tanks, three transmission lines convey water to the distri- <br /> <br /> <br />bution network in Cortez. One of these mains (a 12-inch steel pipe) is in poor <br /> <br /> <br />condition and has little or no remaining economic life. The other two are in <br /> <br /> <br />good condition except for about 5000 feet of 14-inch cast iron pipe which tra- <br /> <br /> <br />verses a boggy area. <br /> <br />Within the city's distribution system, line sizes range from 2 to 12 inches. <br /> <br /> <br />The layout of the present distribution network is shown in Figure 5-1. The <br /> <br /> <br />City is hopeful of strengthening its system by adding the proper size mains to <br /> <br /> <br />complete arterial loops in the east, northwest, and southwest sectors. All <br /> <br /> <br />residential and commercial services in Cortez are metered. <br /> <br />City personnel believe that the existing treatment facility will be capable of <br /> <br /> <br />furnishing enough water to meet their requirements until project water is delivered <br /> <br /> <br />in 1984. Consideration should be given to retaining the existing treatment plant <br /> <br /> <br />as a back-up to the district facility which will be constructed at that time. A <br /> <br /> <br />portion of the Cortez-Towaoc pipeline between the treatment plant and Cortez could <br /> <br /> <br />be constructed earlier than 1984, which will improve the transmission capabilities <br /> <br /> <br />of the City considerably. <br /> <br />-40- <br />