King County’s Sunset / Heathfield Pump Station and Force Main Upgrade Project Earns Envision Silver Award for Sustainability

The Sunset and Heathfield Pump Stations and related force main pipes sends sewage from Sammamish, Issaquah, and Bellevue to be cleaned at King County Wastewater Treatment Division’s (WTD) South Treatment Plant in Renton, Washington. For nearly 50 years, these stations served the area reliably but were reaching their operational limits. The goal of the project was to upgrade the Sunset and Heathfield pump stations and the connected force main pipe to ensure WTD can continue serving a growing population for many more years to come.

King County selected the Envision framework for this project due to its comprehensive nature and relevance to an industrial infrastructure project. The Envision rating system encourages sustainable, equitable, and resilient design, construction, operations, and maintenance processes and practices throughout a project’s lifecycle.

King County WTD staff led the Envision submission for this project and worked closely with Stantec Consulting, the prime architecture and engineering firm.

You can view the entire Project Profile announcement in the Project Awards Directory.