2005/02/02 Council Agenda Packet

4 Exhibit A Scope of Work City of Everett W.O.#2440 112th Street SE (Phase 2)Improvements— Structural Engineering January 2005 A. PROJECT UNDERSTANDING The City of Everett Public Works Department is constructing improvements to 112th Street SE between 3rd Avenue and Interstate 5 in Everett. A rock wall system is present in two segments on the northern section of the project. The first segment is between 3rd Avenue SE and 3rd Place SE. The length of this segment is approximately 230 feet and its approximate height varies between ground level and 7 to 9 feet. The second segment continues from the other side of 3rd Place SE towards I-5 for approximately 180 feet with a height varying between ground level and 8 to 10 feet. As part of the improvement project,the City requires replacement of these walls with a soldier pile wall system due to the proximity of existing property lines and the lack of space for construction of standard retaining walls. The improvement project also requires the structural evaluation of the North Creek Outfall and a 12 feet wide by 7 feet high concrete detention/treatment vault immediately adjacent on the south side of 112th Street SE. B. SCOPE OF SERVICES 1. Information Review: Reid Middleton will review project plans, specifications and geotechnical reports to develop the structural basis of design for the new wall system. This information will also be used to evaluate the design of the North Creek outfall and the detention vault. 2. Project Management: Reid Middleton will meet with the City of Everett project manager and team members to reach a consensus on various wall options and review the basis of design including the geotechnical requirements. 3. Structural Design: Reid Middleton will perform engineered design of the following components: a. New Wall System-The design will include development of concept-level alternatives and comparative cost evaluations for different wall types to help the City select a preferred wall system. 20