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Colorado - Fraser Sedimentation Basin_Application
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Colorado - Fraser Sedimentation Basin_Application
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Last modified
10/15/2012 4:02:27 PM
Creation date
3/13/2008 4:09:18 PM
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Template:
WSRA Grant and Loan Information
Basin Roundtable
Colorado
Applicant
Grand County
Description
Fraser River Sedimentation Basin
Account Source
Basin & Statewide
Board Meeting Date
3/19/2008
Contract/PO #
150449
WSRA - Doc Type
Grant Application
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<br />Water Supply Reserve Account - Grant Application Form <br />Form Revised May 2007 <br /> <br />detail on information to include. <br /> <br />This grant request for $127,900 from the Water Supply Reserve Account is for the Fraser River Settling <br />Pond Project: Grand County. This is a structural water project to make improvements to a previously <br />designed sediment pond with the same goal; to capture sand from current and historical maintenance of <br />Berthoud Pass, as well as natural erosion of the mountainside, before that sediment smothers the remainder <br />of the Fraser River. Improvements to the pond design will include creating a D shaped berm structure to <br />slow the velocity of the river in the pond area to allow for sediment deposition before the water flows <br />through Denver Water's diversion dam. In the fall this pond will be drained for maintenance via <br />improvements included in the project plan to a previously installed diversion pipe, and sediments will be <br />removed to a Grand COlIDty gravel pit. The Project includes new access for maintenance vehicles from the <br />opposite side of the pond so that there is no traffic over Denver Water's diversion pipe. <br /> <br />CDOT currently deposits nearly- ten tons of traction sand on the west side of Berthoud Pass, and recovers a <br />little over half that with vacuuming and excavation. Reduced flows in the Fraser River coupled with <br />excessive sediment deposition mean that the Fraser is lUlable to flush the sediment that enters the river, and <br />aggradation, migration of the stream channel, and deterioration of aquatic and riparian habitats are <br />occurring. Other environmental, economic, and municipal needs met by The Project have already been <br />addressed in part B, question 2. <br /> <br />A biological and habitat inventory was conducted prior to the sedimentation pond construction in the <br />summer of 1998 with the DOW doing the fish inventory. Project construction was completed in 1999 with <br />follow up studies done in 1999 and 2000. The conclusion drawn at this time was that access for <br />maintenance was inadequate and that sediment tended to flow throught the pond on the east side where the <br />Fraser River entered the pond.: Since then plans fo~ the pond have udergone several revi~ions in <br />consideration of the concerns of the parties involved, with the result b~ing the plan that is attached to this <br />grant as supporting documentation (electronic title "appendix 1- design plan"). <br /> <br />5. Please summarize the proposed scope of work. Please refer to Part 2 of the Criteria and Guidance <br />document for detailed requirements. On the following page there is an example format for the Scope of <br />Work. You can use the example format or your own format, provided that comparable information is <br />included. <br /> <br />The scope of work should outline by task how the water activity will be accomplished. It is important that <br />the scope of work detail the specific steps, activities/procedures that will be followed to accomplish the <br />water activity and the specific pro ducts/de I iverables that will be accomplished. The scope of work should <br />include but not be limited to: task description, key personnel, budget, schedule and deliverables and the <br />fmal report/project documentation upon completion of the water activity. <br /> <br />The proposed scope of work includes converting an existing Denver Water Board diversion to also <br />function as a sediment basin to remove as much traction sand coming off of the west side of Berthoud <br /> <br />:7 <br />
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