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Scope of Work <br />US 2 Trestle Interim Improvements 13 April 2026 <br />Deliverables <br />Deliverables for this subtask include: <br /> Strategy for delivery of up to two design packages for construction <br />Task 05 – Stormwater <br />Subtask 05-01 – Conceptual Stormwater Analysis <br />The Consultant shall perform the following: <br /> Analyze roadway concepts to determine the level of stormwater conveyance, detention and <br />treatment needed for the project. These results will be used to scope the level of effort <br />needed for the hydraulic report and final stormwater design. <br /> Define sub-basins and determine existing and proposed PGIS for each design package <br /> Conceptual conveyance design feasibility for proposed roadway improvements. This shall <br />include confirmation of discharge points and using available WSDOT tools and other means <br />for stormwater design documentation, inlet spacing, and approximate pipe sizing by rational <br />method and Manning’s equation. <br /> Propose stormwater detention and treatment BMPs for each sub-basin <br />The above work shall be compiled into a Conceptual Stormwater Memorandum. The <br />memorandum shall also describe the approach for the final hydraulic design work, including a <br />recommendation of the appropriate WSDOT hydraulic report type. <br />Assumptions <br />Assumptions for this task include: <br /> City of Everett and WSDOT will provide review and comment <br /> Will follow City of Everett and WSDOT stormwater design guidelines as applicable <br /> Does not include the hydraulic report (future phase of work) <br />Deliverables <br />Deliverables for this subtask include: <br /> Conceptual Stormwater Memorandum – draft for City review <br /> Conceptual Stormwater Memorandum – draft for WSDOT review <br /> Conceptual Stormwater Memorandum – final <br />Task 06 – Outreach <br />The Consultant will support the City in preparing outreach material, including electronic and website <br />updates. This includes preparing graphics, material and documentation for public and City Council <br />information.