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Emergency Loan Application and Feasibility Study Boulder and Larimer Ditch Company <br />Project Description <br />There are two distinct projects under this application request. The first is the remediation of the <br />diversion structure. The scope of work for this part of the project involves removing debris from <br />the dam and inlet structure, forming and pouring a new wing wall on the north side of the <br />diversion dam, and then rechanneling the Little Thompson River to flow back over the diversion <br />dam. <br /> <br />The second portion consists of repairing the major inlet washout. The scope of work for this <br />portion of the project involves creating a new path for the Boulder Larimer ditch through this <br />area. This will involve creating a permanent foundation secured to bedrock and building a new <br />water conveyance system on top of this foundation. The decision on the type of conveyance <br />system will be determined based on an engineering analysis. The options include an open ditch, <br />a box culvert or pipe. The selection of the best option will be based on a feasibility study and <br />economical analysis. Significant weight will be given to the option that is most likely to handle <br />the next major flood event. <br /> <br />Alternative 1 – Do Nothing: This alternative is considered unacceptable. Failure to make the <br />repairs to the diversion dam and inlet structure would prevent the diversion of the Boulder and <br />Larimer’s water rights leading to the abandonment of the water right and the ditch and the <br />reservoir. <br /> <br />Alternative 2 – Rebuilding Collaboratively with Improvements The original inlet ditch that was <br />washed out was an earthen ditch. The replacement ditch could be a concrete lined ditch or <br />pipeline to reduce shrink in the inlet ditch <br /> <br />Selected Alternative 3 –The dam and washout repair: The current diversion structure has a data <br />logger for measuring the diversion flows. In addition, the diversion structure incorporates a <br />bypass system with an additional data logger so that the state can monitor the flows in the Little <br />Thompson River at that point. The repair of the current diversion structure will allow those <br />accurate measuring systems to be put back into service for proper administration of the river. <br /> <br />Cost Estimate <br />The Project cost estimate based on an initial engineering evaluation by Tessara Water, LLC, is <br />$305,000 for 50% of the repair costs and is further broken down as follows: <br />