CoMI is seeking a highly qualified, customer-focused GC/CM firm to participate as a critical, integrated team member throughout design, preconstruction and construction. The successful GC/CM will demonstrate highly effective preconstruction services including early scope development, phasing recommendations, estimating, constructability reviews, value engineering recommendations and risk management. The GC/CM will work closely with CoMI and project Engineer to integrate the best in current technology including Building Information Modeling (BIM) and Virtual Design and Construction (VDC) to maximize efficiency design, construction, commissioning, start up, operations and ongoing maintenance and operations. The successful GC/CM will demonstrate outstanding skills in subcontractor and supplier buyout, obtaining maximum value, price competitiveness, local vendor participation and disadvantaged business participation. The GC/CM will demonstrate a strong understanding of the unique aspects of work on Mercer Island including all factors affecting price or schedule. The successful GC/CM and CoMI will negotiate to determine the scopes of work to be self-performed by the GC/CM and the scopes of work to be performed by others and procured through competitive sealed bidding. Work may be self-performed by the successful GC/CM when it demonstrates the best overall value and under terms acceptable to CoMI and in strict accordance with applicable statutes. However, the GC/CM’s self-performed portion of the work cannot, under any circumstances, exceed 50 percent of the cost of the work to construct the project. Selfperformed work may be executed under a cost-reimbursable, open-book or a negotiated lump sum as deemed in the best interest of CoMI. At least 30 percent of the cost of the work to construct the project included in the negotiated maximum allowable construction cost must be procured through competitive sealed bidding in which bidding by the GC/CM or its subsidiaries is prohibited, except as allowed under RCW 39.10.390. Seattle Public Utilities (SPU) is the sole provider of potable water to the CoMI. On April 3, 2024, the City learned that the SPU 24-inch water Pipeline to Mercer Island was leaking in the steep sloped area in the SE 40th Street right-of-way. Consequently, SPU crews reduced and then shut off flow, eliminating its use as the primary pipeline. SPU and their specialty contractor, in coordination and collaboration with CoMI, completed temporary repairs and testing, and restored flow through the SPU pipeline line on August 1, 2024. The repaired section was slip-lined with approximately 1,300 feet of structural liner, reducing its diameter and carrying capacity from 24-inches to 17.4-inches. This project will install a new water supply pipeline and provide a new permanent water supply with the installation of approximately 5,000 feet of 24” restrained joint ductile iron pipe along East Mercer Way, SE 36th Street, SE Gallagher Hill Road to SE 40th Street, then east on SE 40th Street to 92nd Avenue SE, where it will connect with an existing 24- inch pipeline. A segment of the new pipeline will run through WSDOT right of way. Additional improvements will be made along SE Gallagher Hill Road, including the replacement of approximately 2,000 feet of 6-inch asbestos cement watermain, the replacement of a pressure-reducing vault, and watermain connections outside of the primary pipeline route. The project will also include street and sidewalk improvements along SE Gallagher Hill Road, SE 40th Street and SE 36th Street, including: pavement repairs, asphalt milling, pre-leveling, full width HMA paving, adjusting utilities to grade and new pavement markings on SE Gallagher Hill Road, SE 40th Street and SE 36th Street. Sidewalk improvements include new curb, gutter, sidewalk and ADA ramps on both sides of SE 40th Street and on the one side of SE Gallagher Hill Road from SE 40th Street to SE 36th Street. Work includes: • Provide pre-construction consulting services including cost estimating, scheduling, phasing, logistics, constructability reviews, selection of materials, building systems and risk mitigation. • Provide integrated use of current design and construction technology including Engineering Information Modeling and Virtual Design and Construction as appropriate. • Assist in establishing performance goals with the project team for the design, construction and methods to achieve these goals. • Consult with City to develop subcontracting plan • Solicit and manage subcontractor and supplier procurement/bidding. • Assist City in determining the best overall value of self-performed work by the GC/CM according to RCW 39.10 for Heavy Civil projects. • Provide construction services to deliver this project safely, on time and on budget.
