Wyckoff Debris Removal and Wall Replacement at Bainbridge Island WA   3

Background
The U.S. Army Corps of Engineers (USACE) has a requirement from the EPA to replace a failing sheet pile wall (1400 ft. length) at a U.S. Environmental Protection Agency (EPA) superfund remedial site on the National Priorities List (NPL) located on Bainbridge Island, Washington. The major components of the wall replacement include a subsurface reinforced soil-mix wall (about 40 ft. deep) installed using the cutter soil mix (CSM) method; ground improvements (up to 80 ft. ground surface) using In-Situ Soil Stabilization (ISS) to improve wall stability and reduce loads on the CSM wall or sheet pile wall; and an upper, un-coupled, precast wall along the entire site perimeter (1400 ft.).

Work Details
The scope of project includes all work required for the Wyckoff Debris Removal & Wall Replacement at Bainbridge Island, WA. The work shall be Request for Proposal (RFP) documents.
The work involves removing subsurface debris such as old bulkheads, riprap, foundations, and backfill material in the areas to be disturbed.
The new CSM wall and debris removal to facilitate the wall and ISS improvement is adjacent to a cantilever sheet pile wall that is in moderate to poor condition.

Place of Performance
Bainbridge Island, Washington