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Left Hand Ditch Company Agenda Item 8b <br />October 18, 2013 (Updated October 21, 2013) <br />Page 5 of 7 <br />• Survey and design new dam and headgate structure. <br />• Remove /Replace destroyed and unusable diversion dam and headgate structure. <br />• Ensure measuring device operates to SEO's Standards. <br />• Restore Left Hand Creek to its pre -flood channel in this area. <br />• Remove debris and Repair ditch. <br />• Evaluate and install possible fish passage structures to enhance the ability of fish to move <br />through the structure. <br />Bader Ditch <br />• Survey and design new dam and headgate structure. <br />• Replace diversion dam and headgate structure. Ensure device operates to SEO's Standards. <br />• Evaluate if it is cost effective to consolidate the Bader and Table Mountain Diversions <br />because of their close proximity. (This may cost less than building two separate <br />structures.) <br />• Remove debris in ditch. Repair ditch. <br />Hinman Ditch <br />• Remove debris in ditch. <br />• Ensure measuring device operates to Repair ditch. <br />Star Ditch <br />• Survey and design new dam and headgate structure. <br />• Replace diversion dam and headgate structure. <br />• Ensure measuring device operates to SEO's Standards. <br />• Remove debris in ditch. Repair Ditch <br />• Stabilize Left Hand Creek around the diversion dam. <br />Holland Ditch <br />• Remove debris in this area. Repair Ditch <br />Ensure measuring device operates to State Engineer's Office Standards. <br />Williamson Ditch <br />• Replace or repair headgate wheel. <br />• Remove sediment from secondary headgate wheel well. <br />• Ensure measuring device operates to SEO's Standards. <br />• Stabilize Left Hand Creek surrounding the diversion dam. <br />• Evaluate and install possible fish passage structures to enhance the ability of fish to move <br />through the structure. <br />Gold Lake Filler Ditch <br />• Repair ditch breaches. <br />Due to the agricultural exemption, this alternative is believed to be exempt from the Clean Water <br />Act and therefore a U.S. Army Corps of Engineers permit will not be required. Boulder County <br />Land Use will be contacted to determine if any county permits are required. <br />The estimated engineering and construction cost of the selected alternative is $3,243,620. <br />