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<br />" <br /> <br />Pine River - Bayfleid Ditch Company <br />May 19-20 2003 <br /> <br />Agenda Item 18c <br /> <br />point where the pipe walls have thinned in many plaCes beyond repair. Also, significant quantities <br />of iron oxide scalings have accumulated at the! siphon outlet. With evidence of further <br />degeneration, the siphon is now subject to imminent: failure, which would entirely close the ditch. <br />The PRBDC wants to replace the siphon this fall, prior to the 2004 irrigation season. In addition, <br />the original pipe and ditch were designed to carry 37; cfs, but currently capacity is limited to 33 cfs <br />due to its poor condition. <br /> <br />. <br /> <br />Feaslbllitv Studies <br /> <br />Ken Beck, President and Janet Enge, Secretary have icompleted a preliminary feasibility study in <br />accordance with CWCB guidelines, based on engineering work provided by NRCS in Durango. The <br />study includes an assessment of alternatives available for repiacement and rehabilitation of the <br />siphon. . <br /> <br />Pine Rlver-Bavfleld Ditch Comcanv <br /> <br />The PRBDC is a mutual ditch company and a non-profit corporation registered in the State of <br />Colorado. The Company was incorporated in 1915. 'There are 51 shareholders holding 1952 <br />shares of stock, The PRBDC has the power to set annual assessments to be paid by the <br />shareholders. the power to cut off water deliveries to shareholders that fail to pay their <br />assessments, and the power to offer stock for sale to pay back assessments. They have the <br />power to incur indebtedness and to pledge company l'lssets as security, <br /> <br />Water Riahts <br /> <br />The PRBDC is a carrier ditch company only and does not own water rights. Water rights are <br />. owned separately by each PRBDC shareholder. SoJrces of water for PRBDC shareholders are <br />direct flow rights out of the Pine River, together with storage water assigned by the Pine River <br />, Irrigation District in the Vallecito Reservoir. Water is delivered to PRBDC through the Schroder <br />Ditch, which has had average annual diversions of 1 $,287 acre-feet over the past 5 years. PRBDC <br />carries approximately 58% of the Schroder ahnual diversions, for an average annual diversion of <br />8866 acre-feet. <br /> <br />. <br /> <br />Project DescrlctJon <br /> <br />Three alternatives were analyzed in the feasibility stLldy: <br /> <br />1. No-action alternative. <br />2. Sleeve (Slip Line) the existing siphon with a smaller 28" pipe. <br />3. Replace the siphon with a new 30" PVC pipe:($267,000.) . <br /> <br />Alternative 1, No-action, was not considered viable! for the system to continue to operate. With <br />significant pipe deterioration evident, the siphon is now subject to imminent catastrophic failure. <br />This would entirely close the ditch. Failure of the pipe would result in 2596 acres of irrigated land <br />taken out of production. Repiacement or repair of t~e siphon must be pursued if the ditch company <br />is to continue to operate. ' <br /> <br />Alternative 2, Sleeve (Slip Line) the existing pipe with a smaller 28" pipe. A new line would be <br />pulled through the old line and the sleeve connected to larger diameter pipe on each end of the . <br />siphon to "load" the pipe and create enough velocity ~o deliver approximately 37 cfs at the outlet , <br />works. The cost to slip line the siphon was projected!to be approximately $187,000, for just the pipe <br />and slip line only, not including the required excavation at various increments along the siphon to <br />allow constructors to pull the line through the existing: siphon. This option poses several unknown <br /> <br />Page 2 pf 6 <br />