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Exhibit A-1 <br /> Scope of Work <br /> 3 Lakes Valve Vault Structural Support and QA/QC <br /> Basis of Compensation <br /> MWH will conduct this Scope of Work on an hourly rate basis with monthly progress payments. <br /> Background <br /> The City of Everett is preparing the design for the 3 Lakes Bypass project on Everett's Transmission Line <br /> No 5. In general the City's overall project involves design of a 36" diameter bypass pipe that will connect <br /> to Transmission Line 5 just upstream and just downstream of the existing 3 Lakes Valve Vault, addition of <br /> buried isolation valves, and construction of a valve vault that will house a 36-inch pressure sustaining <br /> valve, and necessary appurtenances such as lighting, heater, fan, sump pump, access steps, etc. The <br /> City is leading the design effort and will provide certain support services via subconsultants such as <br /> Geotechnical (Aspect Consulting), Electrical and Instrumentation (Casne Engineering). The City has <br /> requested the assistance of MWH to provide structural engineering design support for a cast—in-place <br /> concrete valve vault and to provide overall QA/QC review services for the overall project. <br /> General Assumptions affecting many tasks are provided below. Where possible assumptions are stated <br /> next to the activity they apply to although where assumptions apply to all activities in a task they are <br /> stated at the bottom of the description of that task. Exclusions provided through the scope are for the <br /> purposes of enhanced clarity and the absence of an exclusion does not imply any scope for MWH, whose <br /> scope is limited to activities specifically described in this document. <br /> Design Consultant agrees to perform according to the sequences and duration set forth in the Design <br /> Schedule attached. Parties acknowledge that activity start and finish dates are subject to change based <br /> on the needs of the project and approval by parties. <br /> Summary of data to be provided to MWH for structural design <br /> The City will provide the following: <br /> - Geotechnical investigations-MWH can rely on the City provided geotechnical data as well <br /> as the geotechnical analysis provided by Aspect Consulting. MWH accepts no responsibility <br /> or liability for differing site conditions to those found in the geotechnical data report or <br /> Geotechnical Report. <br /> - Permitting Requirements—The City will provide permitting and permits needed. <br /> - Surveying and site Civil - It is assumed that the CAD base file drawings to be provided by <br /> the City(included topographic mapping and detailed ground survey as well as site civil <br /> design) are sufficient for design. <br /> - Vault Layout requirements and dimensions— It is assumed that the City will provide the <br /> required Vault layout dimensions and requirements. <br /> - Non-Structural Design Disciplines—The City will provide mechanical, electrical, <br /> Instrumentation and Control, and all other design discipline work associated with the pressure <br /> sustaining valve vault design work. <br /> 1 <br />