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. ,T 'h, .;:: ~ .~~ . . ~ June 14, 1993 Eaton, Colorarla lrri'jatin'j - 2 A hanuout was renovatlng the attached, distr.ibuted presenting three alternatives for river diversion structur~. a copy of which is Alternative one would be a restoration of the current diversion structure, The luwer portion of the concrete pad would be replaced with a new pad which would incorporate some energy dissipating facilities. A new cut off wali would be installed on both the upstream and downstream sides. .The area where the wall join the floor of the structure would haveali the deteriorated concrete remuved and-regrouted. The gates~riuld all be restored, Holes would be drilled in the floor of th~ structure to allow grout to be pumped into the void below theflo6~ until the void is filled. The projected life of such .restoration is thirty years. The projected construction cost of.. alternative one is $207,100.00. ., Alternative twu wuuld entail building an uncontrolled spillway structure on the old concrete pad Which would maintain the pond level necessary to maintain maximum project~a:dlversions, The sand gate on the east end of the diversion.tructure would be maintained in its present status. The projected life of alternative two is fifty years with a projected .construction cost of $ 2 74,9 '15 , U 0 '., . Alternative three would also be to bUild an uncontrolled spillway with everything west of the sand gate being removed to bed rock and a completely new structure installed. The projected life of alternative three is one hundred years with a projected construction cost of $290,950,00, Each of the three alternatives presented would include a new river gauging structure below the river diversion structure to more accurately measure river flows that must pass by the diversion structure. Financing for the restoration of the current structure. or construction of a new diversion structure has been approved by the Colorado Water Conservation Board up to a limit of $750,000,00 at 4,0\ for a term of twenty years, The projected assessment per share of stock to repay 100\ financing of alternative three over a twenty year period is $11.13.