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2. Perform dredging in the river channel to eliminate the <br />sand bar above the diversion: <br />This alternative would be an immediate fix to the sand <br />problem being experienced by FMRIC but not a long term fix. <br />Without changes to the diversion structure the sand bar <br />would simply form again and require more dredging. Dredging <br />also has the greater complication of proper permitting and <br />the time required to receive such permits. This alternative <br />is not acceptable to FMRIC. <br />3. Replace portions of the diversion structure with a new <br />bladder gate system (6 foot river gates): <br />This alternative would consist of replacing portions of the <br />diversion with inflatable bladder gates. A 100 foot section <br />of bladder gate, 6 feet tall, would replace part of the <br />current board system. A 30 foot section of bladder gate, 5 <br />feet tall, would replace the current intake gates. The <br />remaining diversion will be left intact. This alternative <br />would solve problems associated with the current operational <br />status of the diversion. Lowering the bladder gate during <br />times of high river flow will greatly reduce the "wear and <br />tear" on the entire intake system. This structure will <br />greatly reduce the sand bar which forms upstream from the <br />current diversion thus reducing the sanding problem in the <br />ditch. The bladder gate will also alleviate the problem of <br />debris hanging up on the structure. The cost of this <br />alternative is approximately $1,439,638. <br />4. Replace portions of the diversion structure with a new <br />bladder gate system (8 foot river gates): <br />This alternative would consist of replacing portions of the <br />diversion with inflatable bladder gates. A 100 foot section <br />of bladder gate, 8 feet tall, would replace part of the <br />current board system. A 30 foot section of bladder gate, 5 <br />feet tall, would replace the current intake gates. The <br />remaining diversion will be left intact. This alternative <br />would have the same benefits as alternative #3 but with the <br />taller gates even more sand could be removed from in front <br />of the FMRIC diversion. The cost of this alternative is <br />approximately $1,950,000. <br />Feasibility Study <br />FMRIC <br />Diversion Structure <br />July 2012 <br />3 <br />