Laserfiche WebLink
<br />Outlet Works Alternatives <br /> <br />1. The no-action alternative. This alternative is not recommended since <br />the loss of storage due the existing restriction or a more drastic <br />restriction is likely more costly than appropriate rehabilitation <br />alternatives. <br />2. Removal and replacement of the existing 16" steel outlet requiring a <br />breach of the dam ($350,000). This alternative would also include the <br />relocation of the control gate out of the public roadway to the intake <br />end of the outlet pipe. Also included would be replacement of the <br />gravel surfaced county road. <br />3. Cured-in-place pipe (CIPP) lining of the 16" outlet combined with <br />proper abandonment of the gate shaft with a new control gate <br />constructed on the intake end of the outlet pipe ($200,000). <br /> <br />Spillway Capacity Alternatives <br /> <br />1 . The no-action alternative. This alternative is not recommended since <br />the issue is dam safety and the cost of addressing the problem is not <br />envisioned to be prohibitive. The no-action alternative would result in <br />either a partial loss of storage or loss of the right to store any water. If <br />the dam were required to be breached then re-establishing the county <br />road would become a significant and costly problem. ($200.000) <br />2. Perform a thorough investigation of the lack of O.4-foot of freeboard to <br />determine whether the spillway has been filled and/or the dam crest <br />has been lowered by road grading maintenance activities over the <br />years. Re-establish the dam crest and the spillway to original <br />elevations. Address spillway erosion issues. ($50,000) <br /> <br />The selected alternative would require State Engineer approval during the design <br />phase of this project. <br /> <br />5 <br />