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. . Description of Tasks for Part II The case studv report will include a more in-depth assessment of the potential for dual system development in two agricultural water suppliers that have agreed to have their systems evaluated, The two systems are (1) The New Cache La Poudre Irrigating Company (Lucerne, Colorado) which is located east ofInterstate 25 in Weld County and Water District 3, and generally outside urban growth boundary areas, and (2) the Highland Ditch Company (Longmont, Colorado) which serves land east and west of Interstate 25 in Weld and Boulder Counties and in Water District 5, and generally within urban growth boundary areas. Both enterprises have reservoir assets and irrigate approximately 30,000 acres, therefore being more or less comparable in size. In addition to applying the checklist developed and discussed in Part I of the study to these agricultural irrigation water suppliers, additional evaluations will be made of current efforts undertaken by these enterprises to serve subdivisions in their areas, comparing those activities with fully operational dual systems in other areas of the Rocky Mountain region, assessing various alternatives to meet the potential water needs of pressurized dual systems (decreed water rights, storage, groundwater augmentation programs for wells, etc), assessing financial bonding capability and other financial considerations of the enterprises, assessing possible legal issues (third party injury and potential liability) associated with developing dual systems, current and projected demand for pressurized untreated water for landscaping, and the interests and concerns of present agricultural water users. The case study report will include the following tasks: TASK I. A composite ditch companv dual svstem planning map, including all parcels in the service area of the ditch company, the location of enterprise diversion points, ditches and laterals and their approximate rights-of-way, reservoir storage, farm wells and their capacity, potential augmentation aquifers in the service area, agricultural land classes, present subdivisions, rural subdivision development impact areas (low and high), rural domestic pipelines presently servicing the enterprise service area, elevation and topography, and potential locations for new storage facilities to pressurize untreated water deliveries. Method: The study team will be assisted by the sample enterprises in developing GIS maps of their service areas. In-kind services will be provided by the Northern Colorado Water Conservancy District, J-U-B Engineering and the sample enterprises, One enterprise has been partially mapped and will be used as a prototype for this task. TASK 2. Dual system water demand and distributional svstem modeling. This modeling will be provided for each of the two sample agricultural water suppliers, J-U-B Engineering in Kaysville, Utah will utilize software (H20 Net and In-CAD) to generate output from the demand and distributional system modeling. Data will be collected by the study team in Colorado and provided to J.U-B Engineering for the modeling, Method: Utilizing data from Part II, Task I, the model will incorporate both present and anticipated future water demand patterns for irrigated agriculture, present potential demand for subdivisions currently not under dual system service, future anticipated subdivision demand based on projected build-out scenarios in the ditch company service area, and potential sources of supply for present and future subdivision development. Additional demand functions in the model will include coefficients for diurnal, seasonal and type of subdivision (high user/low user). All data in the relational database developed for the model will be linked to the parcel polygon. Data collection will be performed by the study team and the data will then be provided to J-U-B Engineers for use in the software programs.