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• <br /> 1 3 <br /> Exhibit A <br /> Diking District 5 <br /> Dike Repairs and Improvements Project <br /> Amendment 1 — Final Design and Permitting <br /> Otak Project No. 32758 <br /> Proposal for Professional Services <br /> September 2017 <br /> Background Information <br /> This Diking District 5 Dike Repair project is located northeast of the City of Everett(the City), <br /> within the Snohomish River Estuary on the northern side of Smith Island. Smith Island is located <br /> between the Snohomish River to the west and Union Slough to the east.There is a system of dikes <br /> around Smith Island that protect the island from much of the flooding that can occur due to tides <br /> and river flows.A large portion of the dike system on Smith Island is currently within Diking <br /> District 5 (DD5).Portions of the dike system along Union Slough within the district,and portions <br /> within the city but outside the district boundary are in need of repair in accordance with the Army <br /> Corps of Engineers'2017 inspection,due to erosion and scour along the slope of the dike facing the <br /> slough.These portions of the dike system outside of the district boundaries also provide protection <br /> to the District,thus the District considers them vital and will make the repairs. <br /> Phase 1 of the project included survey and mapping,geotechnical investigations,environmental <br /> studies,and engineering analyses to provide DD5 with a comparison of alternatives for the repairs. <br /> This amendment to the existing scope of work is for the second phase of the project and will..assist <br /> DD5,through a contract with the City of Everett(the City's project team),by providing <br /> supplemental survey and mapping for the areas of the repairs,final design, construction documents <br /> and permitting assistance for the selected dike repair. <br /> Project Approach <br /> Otak with its subconsultant,Cornforth Consultants,Inc: (CCI), (the Otak team) will complete <br /> supplemental survey,provide geotechnical recommendations,final design and construction <br /> documents,and permitting assistance for the project.The following tasks are included in this Scope <br /> of Services for Phase 2 of the DD5 Dike Repairs and Improvements Project. <br /> Task 1 —Project Management and Coordination <br /> Task 2—Supplemental Topographic Survey <br /> Task 3—Geotechnical Recommendations for Final Design <br /> Task 4—Environmental Studies and Permitting Requirements <br /> Task 5—Final Construction Documents <br /> DD5 Dike Repairs and Improvements Project <br /> 158 <br />