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Delridge Natural Drainage Solutions

Seattle, Washington

SCOPE: community engagement, scoping, design

STATUS: design, construction targeted for 2015

CONSTRUCTION COST: $5 million, estimated

SUSTAINABILITY: Rain gardens, underground injection control (UIC) wells

CLIENT: Seattle Public Utilities

Seattle Public Utilities is testing different approaches throughout Seattle to address the combined sewer overflow problem. J+S is part of a multi-disciplinary team developing a pilot project for right-of-way rain gardens in the Delridge neighborhood. The rain gardens will collect and treat storm water from an entire neighborhood, reducing flows into Longfellow Creek. The first project task was to select potential blocks for the rain gardens, based on engineering objectives and feasibility, public interest, and possible mutual benefits of aligning the rain garden project with an SDOT Green Streets bike/pedestrian way project. The project includes extensive public engagement requiring the preparation of materials that are appropriate for outreach to a diverse audience. The ideal outcome of this project will be an extensive series of rain gardens that effectively handle storm water, contribute a unique sense of identity to the neighborhood greenway and become a source of pride to the community. J+S is involved in public engagement, option development, and rain garden design.