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<br />,-: ."'j (~ <br />;:.~V . 0 <br /> <br />. <br /> <br />Basis for Estimates <br /> <br />Estimates are based on costs as of October 1965, and are derived <br />from field surveys and studies sufficiently detailed to establish <br />~eliable costs on the features recommended for construction in this <br />report. The cost estimate for Narrows Dam was prepared by the Office <br />of Chief Engineer. Plans and estimates for all other features except <br />recreation and fish and wildlife development were prepared in the <br />Regional Office and reviewed by the Office of Chief Engineer. Cost <br />estimates for recre~tion facilities and for fish and wildlife facili- <br />ties were prepared by the National Park Service and the Bureau of <br />Sport Fisheries and Wildlife. The basis for their estimates is <br />shown in their reports attached to the Report of the Regional <br />Director. Cost estimates for land and rights reqUired for recrea- <br />tion and fish and wildlife developments were prepared by the Regional <br />Office of the Bureau of Reclamation, using the same basis for costs <br />used in obtaining the cost of land and rights for irrigation and <br />flood control purposes. The cost of rehabilitating Jackson lake <br />Dam for use as a recreation and fish and wildlife facility was <br />based on a field inspection by representatives of the Office of <br />Chief Engineer and Region 7. <br /> <br />Construction Schedule <br /> <br />. <br /> <br />The features of the Narrows Unit are scheduled for construction <br />during the periods shown on the Control Schedule, exhibit 4. The <br />total time to construct the project with the exception of ultimate <br />recreation features is nine years with storage starting about nine <br />months before completion of the dam. Initial recreation development <br />scheduled for completion concurrently with completion of the dam <br />is judged to be adequate for the first ten years of operation. <br />Funds are included in the estimate for future recreation development <br />over a 50-year period beginning at completion of the reservoir as <br />determined by the adlllinistering agency primarily on an "as needed" <br />basis. <br /> <br />Work on relocation of the Union Pacific Railroad should begin <br />as soon as possible because construction of tile river outlet and <br />the dam in that area cannot be done until the existing railroad is <br />abandoned. It is anticipated that the construction for relocating <br />the railroad will be started about 2-3/4 years before construction <br />for the dam is begun. Negotiations with the railroad, field work, <br />design and preparation of specifications will re~uire about 2-l/2 <br />years before the railroad relocation contract can be awarded. <br />Construction on the dam can start about the time the railroad is <br />completed. Some 3 years is allowed prior to construction for <br />gathering field data, designs and specifications and awarding the <br /> <br />. <br /> <br />12 <br /> <br />Revised July 1966 <br />