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Project Description and Alternatives The purpose of this project is to provide a means for the Glenwood Irrigation Company to continue delivery of irrigation water to shareholders while minimizing the possibility of a future failure of their siphon. Two alternatives were considered: 1. Continue irrigation as before with annual repair. 2. Replace the entire pipeline in three phases over a 10-year period with the first phase being the downstream 1200 feet of the total 3200 feet. Alternative No.1, Continue irrigation as before was considered unacceptable because the present pipe is in such poor condition that failure could affect 750 acres of irrigated land. The selected alternative, Alternative No.2, Replace the lower 1200 feet of the pipe now with the remaining 1800 feet to be replaced in two additional phases (800 feet and 1200 feet) over the next 1 a-years, was chosen because the present section has the worst deterioration. Failure at this time would make delivering water to the down stream users impossible. This project would involve removing the lower 1200 feet of existing 42" steel pipe and replacing it with a new HDPE pipe of the same interior diameter. The estimate cost would provide for the replacement of the lower 2000 feet if it was determined at the time of construction that the 800 foot buried section was also failing. Also in the process of replacing the old exposed steel pipe the new pipe would be buried protecting it from the elements. This pipe is designed to carry the GIC 48 cfs from the Roaring Fork River and will have a normal life expectancy of 50-100 years. The Glenwood Springs Field Office of the Natural Resources Conservation Service (NRCS) along with Schmueser Gordon Meyer Engineers and Surveyors has prepared a Preliminary Engineering Report and a cost estimate for the structure of the project. The report and cost estimate are included in Appendix D. The estimated cost of the full project is $514,250. The cost breakdown is summarized in Table 1. Table 1. Glenwood Irrigation Company - Diversion Project. Cost Estimate Item Quantity Unit Unit Price Amount $ $ NRCS Design 1 Job In-Kind Services SGM Engineerinq Desiqn 1 Job 18,000 Mobilization 1 Job 4,500.00 4,500 47" HDPE Pipe 2000 Feet 114.50 229,000 Concrete Work 20 C Yards 800.00 16,000 Installation, Excavation & Misc. 1 Job 200,000 Materials Contingency at 10% 1 Job 46,750.00 46,750 Total $514,250 Glenwood Irrigation Company Siphon Feasibility Study May 2002 Page 8 of 11