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.' " Metropolitan Water Supply Investigation Proposal Hydrosphere, Inc. Septmber 17, 1993 Page 45 Inventory of Existing Information and Tools Purpose The purpose of this task is to inventory existing infonnation, analytical tools and ongoing studies of major water providers in order to gain an understanding and develop an infonnation base of metro Denver area water supply systems sufficient to evaluate the Project's identified water supply opponunities from a metro-wide context. This task would focus on those infonnation areas not covered in detail by the special studies in Tasks 5 through 8. Methodology and Evaluation Techniques A series of work meetings would be held with major water providers and OSE staff to address a range of metro Denver area water supply planning topics necessary to the conduct of the Project. These subject areas would include water rights usage and ownership; water supply service areas; hydrology; storage, diversion, treatment and delivery facilities; water supply and flood control systems operations; instream flow and water quality issues. Because Denver Water is in the midst of a major water supply planning and modeling effort and given the major administrative role of the State Engineer, these meetings would initially be held with key Denver Water planning staff and OSE staff. We anticipate that a major portion of this task can be accomplished by taking advantage of the accumulated expertise and information base of these two organizations. These work meetings would also involve technical representatives of other water users based on the subject matter of the meetings. Additional task meetings would be held with other water management entities as needed in order to develop a sufficiently complete and unbiased understanding of these areas. These entities would include major individual metro area surface water and groundwater-based providers and water rights holders, the Metro Wastewater Reclamation District, the Colorado Water Quality Control Division, the South Platte Urban Drainage District, the U.S. Anny Corps of Engineers, the Arapahoe County Utilities Advisory Board and the Douglas County Water Resources Authority. During the perfonnance of this task an in-depth review would also be conducted of existing models identified in the initial scoping process as possibly being suitable and available for the Project's purposes, and a determination would be made regarding how to best meet the Project's modeling needs. If a new model were found to be needed, the basic model-related hydrologic, water rights, operations and demand data would be gathered for use in subsequent model development. Linkages With Other Tasks Th is task is pan of the Infonnation Development focus area of the Project and would complement and be coordinated with the special studies tasks to insure complete coverage of topic areas and efficient use of meetings. The Information Development focus area would build upon the results of Scoping and would precede the Model Development and Opportunities Evaluation focus areas.