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TASK 6.0 ASSUMPTIONS <br />• City will provide one list of consolidated comments on the draft Phase 1 Alternatives Analysis Report. <br />Comments will be addressed and incorporated into the final Phase 1 Alternatives Analysis Report. <br />6.3.1 Feasibility Study <br />The task 6.3.1 assumptions are added as follows for clarification: <br />TASK 6.3.1 ASSUMPTIONS <br />• City will review outline and draft development, in particular the evaluation criteria. <br />• City will provide one list of consolidated comments for the outline and draft. Comments will be addressed <br />and incorporated. <br />10.2.1 Agency Meeting and Coordination <br />This task scope is expanded to include up to two meetings with the City and Otak engineering and sciences staff <br />to discuss NLAA and potential to engage NFMS and USFWS and obtain feedback from the agencies to address <br />debrief comments from previous grant applications submitted by the City. <br />NEW SCOPE TASKS <br />1.5 Schedule Preparation <br />Otak will develop a schedule for contract 24-093 and Amendment No. 1. Otak, with input from the City, will <br />prioritize tasks for early coordination with permitting agencies for erosion repair and production of supporting <br />documentation for upcoming grant applications to be prepared by the City. Grant applications are anticipated to <br />occur during Q3 and Q4, 2024 and integrate non -critical path tasks to be completed during Q3 and Q4 (2024) and <br />Q1 and Q2 (2025). <br />TASK 1.5 DELIVERABLES <br />• Schedule for Contract 24-093 and Amendment 1 Tasks (electronic pdf) <br />TASK 1.5 ASSUMPTIONS <br />• City will provide one list of consolidated comments on the draft schedule. Comments will be addressed and <br />incorporated into the final schedule. <br />6.4 Existing Culvert Technical Condition Assessment and Technology <br />Compatibility <br />Otak will utilize the following corrosion guidance documents to estimate the service life of the existing corrugated <br />metal plate pipe: <br />o WSDOT BDM Section 6.7 Corrosion of Steel Foundations and Buried Structures <br />o CalTrans Corrosion Guidelines V3.2 <br />o Manufacturer product data (i.e. Contech) <br />The service life estimation will rely on geotechnical data for soil pH and the corrosivity properties of the Gilliam <br />Creek and Green River draining within the culvert. The Gilliam Creek and the Green River water chemistry <br />Otak — Scope of Work <br />48 <br />