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<br />,..... <br />'''--' <br />\.., , <br /> <br />APPENDIX B - DESIGNS AND COST ESTIMATES <br /> <br />. <br /> <br />~:-~ I. General. <br />C.O <br /> <br />Specific descriptions of the improvements and cost estimates for each <br />canal and lateral component are contained in this appendix, <br /> <br />For ease of computerization and for convenience in the naming of <br />laterals, the canals were assigned an alphabetical symbol, The South Canal <br />was designated the "A" Canal. The other canals were likewise designated <br />depending on their order of diversion from the Uncompahgre River. The <br />Loutzenhizer is the "0" Canal; the Selig is the "E" Canal, the East Canal is <br />the "G" Canal and the Garnet Canal is the "H" Canal, The West (B), Montrose <br />and Delta (C) and Ironstone (F) Canals are all located west of the Uncompahgre <br />River, and are not included in the authorized plan. This naming system is <br />used in many of the following tables and location maps. <br /> <br />II. South Canal - A Svstem <br /> <br />The South Canal begins at the Gunnison Tunnel Outlet and conveys <br />irrigation and municipal and industrial water in a south-southwesterly <br />direction serving 7,020 acres of lands on the east side of the Uncompahgre <br />Valley. The canal is 11.4 miles long with a capacity of 1,060 cfs for its <br />entire length. At the terminus of the canal, a portion of the water is <br />diverted into a flume across the Uncompahgre River which is the beginning of <br />the West Canal. The remaining water is wasted into the river for use in <br />downstream diversions to the other canals. The location of the canal <br />centerline is shown on Drawing No, 1244-417-1417, <br /> <br />. <br /> <br />A. Geology and Construction Materials <br /> <br />Bedrock throughout the South Canal alignment is Mancos Shale of <br />Cretaceous Age, The canal has been cut in shale for most of the alignment, <br />Shallow residual soils cover the shale over most of the area, These soils are <br />mostly lean clays with some silty clays. Deeper, clayey, alluvial soils are <br />found in a few small washes and the area near Dry Cedar Creek. In the last <br />few thousand feet of the alignment, fine-grained flood plain deposits overlay <br />gravels of the Uncompahgre River. <br /> <br />Borrow materials for compacted embankment in the South Canal could come <br />from alluvial materials from several small washes in the area of the canal. <br />The soils in these areas are lean clays and contain trace amounts of gravel. <br /> <br />B. Canal Lining <br /> <br />The canal would be in open, PVC membrane lined section. Approximately <br />7,7 miles of the 11,4 miles of canal would be lined, The remainder of the <br />canal is in tunnels or was previously concrete lined. <br /> <br />. <br /> <br />24 <br />