The brownfield site presented a series of complex challenges, and the design team ultimately identified 84 specific conditions that required problem-solving. Among the most pressing issues was the hazardous slope, which demanded extensive engineered slope stabilization and retaining walls. To address this, our team proposed utilizing one of the parking structures outlined in the master plan, strategically placed along Washington Street, to help solve the problem.

The site is located within a 100-year floodplain, adding another layer of complexity. = The team had to develop a mitigation strategy to “balance the grading” of the land, ensuring flood relief measures could be implemented. The need for an extensive stormwater management plan was clear, as the site’s conditions called for careful management of water runoff to prevent future flooding.

Poor soil conditions also necessitated the engineered support of all underground utilities. The master plan considers significant improvements required for the right-of-way and existing roadways to meet the needs of the development.

Another critical issue was the depth of the existing landfill cap, which required close analysis. The master plan had to ensure that any grading work would not negatively impact the cap and cause serious environmental consequences. The plan also addresses the remediation of leachate moving off-site toward the Clackamas River.