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<br />I <br /> <br />I <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I' <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br />I <br /> <br />I <br /> <br />I <br />I <br /> <br />on all existing wells along with appropriate automatic control equipment to <br />integrate the well production into the water treatment plant demand. <br /> <br />4.4.4 Water Treatment Facilities. Water treatment facilities will be designed <br />in accordance with Colorado Department of Health standards and construction plans <br />will be approved by the Colorado Department of Health prior to construction. The <br />plant will consist of reverse osmosis units with each unit producing approxi- <br />mately 70% of the total demineralized water required. The first R.O.unit will <br />be installed under the Stage I (1977-78) improvement project. Provisions and space <br />will be provided for installing additional R.O units when the population and <br />water useage requires the units to be placed in service. Pumps, chemical feeders, <br />degasifier, chemical storage, chemical handling equipment, control equipment, <br />membrane cleaning equipment, and all internal piping and appurtenances will be <br />incorporated in the design to make the plant operational. <br /> <br />Modifications to the existing plant equipment for use on the deep well water supply <br />will include a new forced draft aerator, chlorine feeder, sludge pump and piping <br />in the cistern, new filter media in the pressure filter, and internal/external <br />piping and appurtenances. <br /> <br />4.5 STRUCTURAL AND DRAINAGE PLANS <br /> <br />The structural plans needed for construction will be prepared during the design <br />phase of the improvement project. Once the storage tank site is selected and pur- <br />chased and the type of tank is selected, a soils exploration and structural de- <br />sign of the tank and footings will be required. Site plans will be prepared to <br />provide construction layout and site drainage for the selected tank site. <br /> <br />Plans will be prepared for the well houses, well equipment, and water treatment <br />facilities during the design phase of the improvement project. Soils exploration, <br />structural plans and site drainage plans will be required for the well houses <br />and water treatment plant. <br /> <br />Detail plans will be prepared showing pipe location and alignment, trench bedding <br />requirements, and blocking details for valves, fittings and fire hydrants. All <br />fire hydrants must be free draining to prevent freezing and details of the <br />hydrant drains will be included in the plans. <br /> <br />4.5 RIGHTS-OF-WAY OR LAND ACQUISITION <br /> <br />Water distribution mains as shown on Plate II will be installed within the existing <br />public rights-of-way to the maximum extent possible. Where new easements are <br />required for water main installation, the easement location is noted on Plate II <br />by shading. Where easements are required they should be permanent easements at <br />least 15 feet wide to allow access by maintenance equipment for inspection and <br />repairs. Additional width temporary easements may be necessary for construction. <br />It is recommended that an additional 10-feet of temporary construction easement <br />be obtained at the same time the permanent easement is acquired. <br /> <br />Permits will be required for crossing or installations onrailroad-rights~of-way <br />and U.S. Highwpy 50. <br /> <br />Permanent site must be acquired for the storage tank. If adequate area is available <br />at the existing tank site, the treatment facilities will be constructed adjacent <br />to the existng well and treatment building. If the area available is not adequate <br />then an additional site must be acquired for the new treatment facilities. <br /> <br />-30- <br />