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FONSO l<ir~of Water Works of Pueblo ~ '.. I July 2000 growth and development, increased pressure on existing infrastructure, restrictions on residential irrigation, and loss of population. PROPOSED ACTION The Outlet-Storage Alternative represents Reclamation's proposed action. The Board would normally take all of its non-project water at the South Outlet Works at Pueblo Dam. The South Outlet Works is a single-purpose M&I feature of the Fryingpan-Arkansas Project and was included in the planning, design, and construction of Pueblo Dam at the Board's request. The South Outlet Works was designed to provide conveYllnce of project and non-project M&I water to Pueblo, other M&I entities, and potential water USers of the proposed Arkansas Valley Conduit. This alternative would also Include a proposed agreement with Reclamation to convey non-project water through the South Outlet Works. The South Outlet Works is a multi-Ieyel outlet that allows water to be released from different levels of the reservoir to permit releases as the reservoir surface fluctuates and to control the quality of water being released. However, it does not currently operate as designed. It has a total capacity of 359 cfs (712 ac-ft/day) of which 276.5 ets (552.4 ac-ft/day) would be dedicated to Pueblo for use by the Board. The remaining capacity of the South Outlet Works is committed to the Fountain Valley Conduit (30.6 cfs), Pueblo West (16.9 cfs), and the proposed Arkansas Valley Conduit (31.0 cfs). Connections for Pueblo West and the Fountain Valley Conduit are already in place and water is delivered to each entity through the South Outlet Works. A pipeline having a capacity of 180 million gallons/day would be constructed to convey water approximately 4.9 miles from the South Outlet Works to the Whitlock Water Treatment Plant. The pipeline would be 64" in diameter from Pueblo Dam to the Comanche Pump Station and 76" in diameter from the Comanche Pump Station to the Whitlock Water Treatment Plant. The first approximately 1.65 miles (6,700') of the pipeline would be on Reclamation property, the next approximately 1.6 miles (9,300') would be on Colorado State Parks property, approximately 0.5 miles (2,700') would be on Board property, approximately 0.53 miles (2,600') on private property and abandoned railroad right-of-way, followed by approximately 0.13 miles (700') on Colorado highway right-of-way, and approximately 0.28 miles (1,500') on Colorado State Parks property/abandoned railroad right-of-way. The Board intends to acquire all of the private property and abandoned railroad right-of-wa~ in the near future. The width of the construction right-of-way would be 100 feet resulting I In temporary disturbance to up to 59.5 acres. Of this total potential disturbance, approximately 20 acres is on Reclamation land and the remainder is on non-federal land. A 50-foot right-of-way would be established across Reclamation land following construction to maintain the pipeline. The pipeline would cross the Arkansas River approximately one mile below Pueblo Dam. Following construction, the disturbed areas would be recontoured and planted to native grasses and shrubs. Removal of mature trees would be avoided to the maximum extent possible. Unavoidable removal of trees would be mitigated by replacement at a 2:1 ratio, protected from beaver, and monitored for at least two growing seasons to assure success. CSU requested the Board consider enlarging the upper portion of the pipeline to accommodate potential future use by CSU. The Board agreed to this request. In order to mitigate the increase in trench depth and width to accommodate the larger-diameter pipe, the Board and CSU have committed to reduce the depth of cover over the pipeline and to use trench supports to maintain the width of the disturbed area where mature trees might be adversely affected to II