GJN3951 PWR Contract - Laserfiche WebLink

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'C%pper ~nra_an Creek Enhancement at Frmrk Kinnet~ Park Page ? Pacific Water Resources, irrc. 3/8/O.i Activities: 1. Identify Survey Needs. Survey needs will be identified and communicated to the City. The City will.be responsible for providing the survey data that is needed. We anticipate possibly needing some pipe invert information, which originally may have been considered outside the scope of this project. 2. Evaluate Design Feasibility of P-A 1, P-A2, and P-G. Appropriate methods will be used to analyze, size and evaluate the P-A1, PA2 and P-G predesign alternatives. The evaluation will consider actual grades, and both constructability and public acceptance issues. The evaluation will also include the development of aHEC- RAS model needed to completely understand the hydraulic and cover issues associated with these alternative crossings. PIanning Level cost estimates will be developed. For the purpose of the planning level construction cost estimate, the design feasibility is limited to project elements P-A1, P-A2 and P-G and does not include fish passage. 3. Evaluate the Design Feasibility of a Fish Passable Structure at P-A1 or P-A2 (Optional). Appropriate methods will be used to analyze, size and evaluate the design feasibility of a fish passable structure at P-A1 or P-A2. The evaluation will be guided by the criteria included in ODFW's Fish Passage Standards. The evaluation will consider actual grades and both constructability and public acceptance issues. The evaluation will also include the development of a HEC-RAS model needed to completely understand the hydraulics and cover issues associated with these alternative crossings. PIanning level cost estimates will be developed. The cost of this evaluation includes the effort needed to document the results. The actual documentation will be included as part of the draft design feasibility memo described in Activity No. 5. 4. Evaluate the Design Feasibility of a Fish Passable Structure between P-B and P-C (Optional). Appropriate methods will be used to analyze, size and evaluate the design feasibility of a fish passable structure between P- Band P-C. The evaluation will,be guided by the criteria included in ODFW's Fish Passage Standards. The j evaluation will consider actual grades and both constructability and public acceptance issues. The evaluation will also include the development of a HEC-RAS model needed to completely understand the hydraulics and cover issues associated. with this crossing. Planning level cost estimates will be developed. The cost of this evaluation includes the effort needed to document the results. The actual documentation will be included as part of the draft design feasibility memo described in Activity No. 5. 5. Prepare a Draft Design Feasibility Memo. This memorandum will summarize the results of the design feasibility evaluations. PWR anticipates that this memorandum will be approximately 5-7 pages and may include a few graphics. The length of the memo will increase if Activity No. 3 and/or No. 4 is undertaken. A draft will be submitted to the City for their review and comment. 6. Conduct Field Meeting. After review comments from the City are received, a field meeting will be held that involves all of the pertinent parties like City parks, maintenance staff and permitting agencies. It is a good idea to involve the appropriate permitting agencies at this point to help prevent any future design changes that could result from any unnecessary permitting surprises. The object of the field meeting is to arrive at a consensus regarding the recommended design direction, one for each project element. 7. Conduct Oftice Meeting (Optional). If necessary, a meeting at the City's offices will be conducted immediately following the field meeting to resolve any remaining issues regarding the various recommended designs. A single design will be selected for each project element to pursue into preliminary design. 8. Obtain and Analyze Sediment Samples. PWR will obtain representative samples of both streambed and stream bank material for use in preliminary and final design. Potholing may be needed where the stream will be daylighted. The City will provide the equipment and operator to be used for any potholing activities. Up to six samples will be collected by PWR staff on the same day as the field meeting (Task 5 above). Sieve analysis will be performed by others at the direction of PWR (i.e. budget included).