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TELESTO <br /> SOLUTION S• t OH POP AI ED <br /> November 1, 2013 <br /> Dale A Leach, President <br /> Louden Irrigating Canal and Reservoir Company <br /> 4009 E Cty Rd 30 <br /> Fort Collins, CO 80528 <br /> Subject: Louden Irrigating Canal and Reservoir Company 2013 headgate and ditch damage <br /> inventory and engineering repair guidance summary, supplemental. <br /> Dear Mr. Leach: <br /> In response to the damage caused by the recent flooding of the Big Thompson River on October <br /> 16,2013, Telesto Solutions Inc. (Telesto)provided a damage inventory and repair guidance letter <br /> for the headgate and in the ditch from the headgate to approximately 3,500 feet downstream. <br /> Since then, sediment removal from the ditch has been completed; the large debris pile <br /> surrounding and on the headgate, has been removed and hauled away. Additionally, the Big <br /> Thompson River flows have decreased allowing for a closer inspection of the diversion structure <br /> as well as the headgate. This letter provides supplemental damage inventory and repair guidance <br /> for the diversion structure and the headgate. Also included in this letter are revised engineering <br /> designs for the washed out areas occurring along the ditch northeast of the Highway 34 bridge. <br /> Headgate and Diversion Damage Assessment <br /> Based on a field investigation performed on October 21, 2013 Telesto recommends the <br /> following: <br /> • Multiple holes were discovered to have formed along the eastern concrete face of the <br /> diversion structure (Photo 1)and requires repair <br /> • An assessment of the headgate showed no major damage to the structure (Photo 2). <br /> However, one gate mechanism was cracked(Photo 3)and requires repair <br /> • Repair to the toe of the diversion structure where the river bed has been eroded leaving a <br /> void below the bottom lip of the diversion structure (Photo 4) <br /> Recommended Headgate and Diversion Repairs <br /> The holes in the diversion face are small, ranging in size from 6 to 30 inches, and may be <br /> repaired with concrete patches. Drying the east face of the diversion will be necessary to <br />