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<br />. <br /> <br />1-" <br />c.') <br />t,,) <br />0) <br /> <br />. <br /> <br />. <br /> <br />B. Revisions to the Authorized Plan <br /> <br />1. Assumptions for SO/JU StudY Desian and Cost Estimates <br /> <br />Cost estimates for this study are based on detailed <br />feasibility-level designs of the canals and laterals on the east <br />side of the Uncompahgre River and cost information that was <br />provided by the UVWUA for work they have accomplished under <br />previous R&B programs. The following assumptions were made for <br />the SO/JU study designs and cost estimates for the canal and <br />laterals on the east side of the River: <br /> <br />a. All main canals will be lined with PVC membrane <br />and have a final slope of approximately 0.00013 <br />ft/ft. <br /> <br />b. All of the laterals will be replaced with concrete <br />or PVC pipe. <br /> <br />c. All of the turnouts will be rehabilitated with new <br />turnout structures installed consisting of <br />division boxes, stilling pools and Parshall <br />flumes. <br /> <br />d. <br /> <br />Flood protection will be replaced in kind. <br />Further improvements will be at the discretion of <br />the UVWUA. <br /> <br />e. Pipe costs were established based the construction <br />of a concrete pipe plant similar to that used in a <br />R&B Project on Reclamation's Shoshone Project - <br />Heart Mountain Division. The Heart Mountain <br />Division is very similar to this project in terms <br />of acreage and construction capabilities of the <br />water users. <br /> <br />f. The UVWUA will be able to place PVC lining with <br />their own crews and equipment. <br /> <br />g. The pipelines will be primarily gravity flow, <br />requiring Class A concrete pipe. Where more <br />economically efficient, PVC pipe will be used and <br />occasionally, where hydraulic conditions dictate, <br />pressure pipe may be used. <br /> <br />h. <br /> <br />Several combinations of laterals will be designed <br />to significantly reduce the overall length of the <br />system and improve the efficiency of the water <br />deliveries. The estimates represented in this <br />report primarily assume that the pipe will be <br />placed along the existing alignment, but specific <br />examples of potential re-alignment for the South <br /> <br />7 <br />