Hoffman-Fowler LLC was selected to work with the Willamette Water Supply System Commission to help with the design phase, development of guaranteed maximum price, and construction phase services for Reservoir 1.0 (RES_1.0) and PLM_5.3 of the project as CM/GC. The Willamette Water Supply Program is a partnership between Tualatin Valley Water District, the City of Hillsboro, and the City of Beaverton to develop the mid-Willamette River at Wilsonville as an additional water supply source. This new system, when operational in 2026, will provide a reliable water supply for the region while also helping water system operators balance supply during times of drought or other supply interruptions, and recover more quickly after a large natural disaster.
The RES_1.0 and PLM_5.3 projects are being designed by two different Engineers, but will be constructed together under the single CM/GC contract with Hoffman-Fowler LLC. The work will include Design Phase services, including: constructability reviews, value engineering, cost estimating, scheduling, and procurement and preconstruction services. The
RES _1.0 project consists of two new pre-stressed concrete water reservoirs, each with capacity of 15 million gallons. The two 15-million-gallon water storage tanks will be built near the intersection of SW Grabhorn Road and SW Stonecreek Drive. Construction of the easternmost water storage tank will be coordinated with the PLM_5.3 project. It is anticipated to be complete in spring 2025.
The PLM_5.3 project consists of approximately 21,000 feet of 66-inch diameter welded steel pipeline. The pipeline alignment begins near the intersection of SW Tile Flat and SW Grabhorn Roads, and will connect to the PLM_5.2 pipeline to convey treated water to and from the RES_1.0 project. The pipleline will also connect to the South Hillsboro Pipeline Project, PLW_1.0.
Construction of the project will be coordinated to reduce the impacts on close by neighbors and the traveling public.