Murray Combined Sewer Overflow Control Project

The Murray Combined Sewer Overflow Control Project (Murray CSO Control Project) is a project of the King County Wastewater Treatment Division (WTD), consisting of the planning, design, and construction of a new combined sewer overflow control facility.  The new facility is designed to receive overflow from the currently operating Murray Avenue Pump Station across Beach Drive SW, Lowman Beach Park, in the West Seattle neighborhood.  As it is not LEED eligible, the project is using the required King County Wastewater Treatment Divisions Sustainability Process Scorecard (WTD Scorecard), to help define sustainability objectives for the project.

The planning included extensive community involvement, identifying key themes for the project in terms of site planning, architectural design, and the inclusion of community amenities.  The intent of the design is to support these community goals as part of delivering a quality, high performance facility.

Through the King County GreenTools program, O’Brien & Company assisted with the planning and facilitation of a charrette to kick off sustainability planning and complete the WTD Scorecard.  The workshop was attended by 30 stakeholders and resulted in several new ideas for sustainable elements on multiple scales – from the details of material selection to significant additions to scope (i.e. rainwater collection).  Strong themes of reducing operations and maintenance cost and time, reusing water, and being a good neighbor were echoed throughout the session.  To document the stakeholders input and set the stage for implementation, O’Brien & Company prepared a summary report of the resulting themes, strategies, ideas, and key next steps, as well as a  preliminary WTD Scorecard.