Laserfiche WebLink
a Estimate how the river is likely to respond to each for the four project alternatives (see <br />next task). Predictions will made for two future time periods - 5 years and 25 years in <br />the future. Because predictions are uncertain, the Consultant will provide an estimate of <br />the range of possible geomorphic change that may occur as opposed to a single <br />predicted outcome. <br />Deliverables: <br />r Text and figures that present the results of the geomorphic investigation to be included <br />in the project report. <br />Assumptions: <br />. Future geomorphic response predictions are inherently uncertain;therefore, the <br />Consultant's predictions are approximate and are to serve as general information for the <br />purpose of comparing the alternatives and defining uncertainty. <br />. Geomorphic assessment will require up to one day of additional field data collection to <br />assess geomorphic conditions related to avulsion and migration. <br />8. Alternative Concepts and Evaluation <br />The consultant, in consultation with County staff, shall identify up to four project alternatives <br />The alternatives shall include but not be limited to: <br />1. Remove the Hanson Pits Levee and private berm completely. <br />2. Remove portions of the Hanson Pits Levee and private berm. Up to three partial levee / <br />private berm removal options will be tested. <br />3. ln combination with 1 and 2 above, the Consultant will include simple floodplain <br />reconnection actions in the alternatives. <br />As part of Tasks 6 and 7 above, the Consultant shall run the hydraulic model for each <br />alternative and use the results help inform the future geomorphic response predictions. <br />An alternative evaluation matrix will be created to compare the four alternatives using the <br />evaluation criteria developed in Task 2. <br />Deliverables: <br />. Simple concept sketches representing each project alternative. <br />. Descriptions of the alternatives. <br />. Descriptions of anticipated geomorphic change and avulsion / channel migration risk. <br />r Evaluation matrix.