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9. Longitudinal Stream Profile Stability and Countermeasure Recommendations <br />When designing the culvert, it will be critical to anticipate how the stream's longitudinal profile <br />will adjust to the new culvert. Some incision is likely, and must be factored into the design of the <br />culvert foundations. Incision will also impact the characteristics of the upstream wetland. WSE <br />will work with the culvert designer and project geotech to recommend appropriate culvert and <br />bed configurations for the anticipated profile adjustments. WSE will also work with the project <br />team to determine if impacts to the upstream wetland can or should be minimized. <br />10. Local Scour and Bank Erosion Assessment, Countermeasure Recommendations <br />WSE will assess scour and lateral erosion potential for proposed crossing alternatives. This will <br />include recommendations for spread footing depth if a three -sided culvert is selected. WSE will <br />also recommend scour and erosion countermeasures if they are needed. <br />11. Steam Bed Material Recommendations <br />WSE will recommend stream bed material gradations to be used within the floor of the culvert. <br />Gradations will be based upon a review of natural bed material characteristics and gradation <br />estimates computed using published WDFW formulas_ <br />12. Design Reflnements <br />An allowance is provided for WSE staff to work with the design team to refine the crossing <br />designs to address comments provided by County and/or resource agency personnel. <br />13. Hydraulic Design Memorandum <br />The memorandum from Part 1 will be modified to include and document methods and results <br />from Part 2. The memorandum will be provided to the County for review and upon receipt of the <br />comments, will prepare and submit the final report. <br />14. Environmental Permit Support <br />WSE will provide materials from the hydraulic investigation that will be needed to support <br />preparation of environmental permit applications. <br />15. Site Design Meeting <br />An allowance is provided for WSE staff to participate in one additional meeting at the project site <br />to discuss the project with the civil and structural designers. <br />16. Administration — Part 2 <br />WSE will maintain frequent communication with the county and submit monthly invoices which <br />include brief progress reports. <br />Schedule: <br />Part 1 — WSE will complete within two weeks of receiving NTP <br />Part 2 — Schedule TBD with consultation with design team. <br />Budget: Attached <br />