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. . Exhibit I - Scope of Services Metropolitan Water Supply Investigation November 17, 1993 Page 14 goals could buy more time for Metro with respect to making the best decision regarding South Platte water quality issues. This is especially relevant given that EPA has committed itself to assisting the region in exploring water supply alternatives to Two Forks. Southern Water Suoolv Proiect - The Northern Colorado Water Conservancy District (the District) is in the advanced planning stages for its Southern Water Supply Project (SWSP), consisting of a gravity pipeline from Carter Lake which will deliver water to participating municipal water users in Boulder and Weld County, This project grew out of an assessment of municipal and industrial water supply needs within the existing District and its currently contemplated service area only. As a part of this effort the District has developed a great deal of information on existing municipal water supplies and future needs, alternative pipeline routes, sizes, costs and environmental impacts. Design of the SWSP is expected to be completed in the summer of 1993 and construction is expected to begin in 1994, While the sizing and alignment of the proposed pipeline is based on the needs and financial capabilities of current project participants only, the easements associated with the proposed pipeline have been sized by the District in anticipation of an additional pipeline at some future time. In doing so the District has recognized the possibility that more comprehensive front range water management needs could be served in the future by additional conveyance capacity from Northern Colorado to the metro Denver area, However, the District has not studied such future potential, and its current policies do not contemplate the use of water from CBT, Windy Gap or Northern "base supply" south of Boulder and Weld Counties. The MWSI Project should consider a wide range of options which may involve the use of Northern Colorado water supplies and project facilities in meeting Front Range water management issues while keeping in mind the legitimate interests of Northern Colorado, In doing so, the MWSI Project should solicit the active involvement of Northern Colofado representatives, Araoahoe Countv Utility Advisory Board Studies - Watef Providers in Arapahoe County have organized through a County-formed Utility Advisory Board since early 1990, This Utility Advisory Board was charged with investigating new plans of water supply development in view of the failure of Two Forks, Water providers in Arapahoe County participated in approximately 18.5% of the Two Forks project and the economic development that has begun to occur over the last 18 months highlights the need to find new supplies to replace the Two Forks supplies that would have been delivered to the County. The Utility Advisory Board focused in on the County's very significant groundwater supply as a source of meeting those demands. Currently some 32 million acre-feet of groundwater exists under Arapahoe County in the non-tributafY aquifefs of the Denver Basin. Under Senate Bill 5 the providers in the County could potentially withdraw some 320,000 acre-feet of groundwater a year. Studies of the groundwater by the Utility Advisory Board have recommended that consideration be given to producing 30,000 acre-feet of groundwater annually to meet projected demands for approximately a 50 year period, Rather than depletion of the groundwater resource over time, the Utility Advisory Board has considered the potential "conjunctive use" of these groundwatef supplies with surface water supplies derived from the mountains. The conjunctive use sch<,r.' that was developed would utilize the groundwater supplies only in periods of drought. The groundwater system that is developed would then serve as a stand alone system component that could deliver 30,000 acre- feet of water supply to Arapahoe County in any year as required by drought,