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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />Chapter VI - Selection of Alternative and Financial Plan <br /> <br />order to accomplish this, or in this case come as close to this criteria as reasonably possible, the <br />roughness of the pipe, natural channel, and lined canal sections; losses; and the pipe slope must be <br />considered. <br /> <br />The design of the concrete mortar-lined steel and reinforced concrete pipe and the natural <br />channel sections would be based on Mannings "n" values of 0.012 and 0.030, respectively. For the <br />pressure conditions of the low-level outlet, the Manning's value would be converted to a friction <br />value in the Darcy- Weisbach equation using the method presented in the "Design of Small Dams" by <br />the U.S. Bureau of Reclamation. Losses such as trashrack, entrance, and exit would be based on <br />values presented in the "Design of Small Dams". The slope for the high-level diversion structure <br />would be minimal to allow the pipe to drain since it is used for conveying water into and out of Boyd <br />Lake. The new low-level outlet slope will also be minimal to allow for draining the pipe due to the <br />existing channel elevations and reservoir operating levels. <br /> <br />Structural design criteria are primarily limited to the strength of the structural concrete and <br />the foundation properties of the structures. Structural concrete would have a 28-day compressive <br />strength requirement of 4000 psi. The foundation properties would have to be verified by a <br />subsurface investigation program during design to determine the bedrock elevation along the <br />alignment of the low-level outlet. <br /> <br />C. Land and Right-of-Way Requirements <br /> <br />The Company would construct the selected alternatives on right-of-way owned by the <br />shareholders. Access to the site is also available via Company owned right-of-way. <br /> <br />D. Project Implementation Schedule <br /> <br />Table VI-2 shows a potential schedule for implementirig this project <br /> <br />E. Cost Estimates <br /> <br />Table VI-3 presents an estimate of the construction and construction services costs <br />associated with the selected alternatives for the project as well as the requested loan amount from <br /> <br />Boyd Lake Dam Outlet System Feasibility Study <br /> <br />25 <br /> <br />lf30VLE <br />