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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 />Coneeptuali~ed Secondary SUIDllv System <br /> <br />Secondary Supply DesiQn Concept <br /> <br />The development of a pressurized "secondary supply" irrigation transmission system is <br />proposed to provide irrigation water "on-demand" throughout the City of Lamar service <br />area. A network of raw water storage reservoirs, pump stations and pipelines is <br />conceptualized to provide the water required for irrigation purposes. <br /> <br />In order to evaluate the water demands and hydraulic needs for the various segments of <br />the City, it was necessary to identify the various types of properties that would be <br />serviced by the secondary supply system. Four general Water User Classifications were <br />identified for the purpose of this report: <br /> <br />· Single Family Residential <br />· Non-Single Family Residential <br />· Institutional and Parks <br />· Commercial and Industrial <br /> <br />Water demand parameters were developed for each of these Water User Classifications <br />and these parameters were used as a basis for developing a conceptual distribution <br />piping network and hydraulic model, as well as the conceptual pumping system and <br />water storage requirements. <br /> <br />Figure 1 shows the locations for each of the four Water User Classifications throughout <br />the City. <br /> <br />It is anticipated that the development of the secondary supply system will occur over an <br />extended period of time in order to meet developmental priorities and to work within a <br />feasible budgetary framework. For this reason, the City was divided into six phased <br />boundaries based on a logical progression from the proposed reservoir locations and <br />probable construction costs for each phase were developed. The construction phases <br />were determined based on City mapping documentation and our discussion with the City <br />of Lamar. Aerial photographs, geographic information system (GIS) maps, and potential <br />future service areas as defined by City of Lamar representatives were considered in the <br />development of the phasing study. Six phases are anticipated both to the south and the <br />north of the railroad tracks. The water source for the system to the south of the tracks is <br />anticipated to be raw water from the Fort Bent Ditch system, and the water source to the <br />north of the tracks is anticipated to be ground water from well sources. The construction <br />of Phase 6 is considered to be independent of Phases 1 through 5, and could <br />conceivably be constructed in conjunction with any or all of the five phases to the south <br />of the tracks. As each phase is developed, the water storage facilities, pumping systems <br />and secondary supply distribution piping network will be constructed or extended to <br />provide irrigation water service points of connection for City of lamar water users. <br /> <br />Aqua Engineering, Inc. <br />and Colorado State University <br />May 19, 2004 <br /> <br />Secondary Supply Feasibility Study <br />-14- <br />