Welcome to Washington Closure Hanford

Washington Closure Hanford (WCH) managed the $2.9 billion River Corridor Closure Project for the U.S. Department of Energy’s Richland Operations Office from 2005-2016.

The company was responsible for protecting the Columbia River by cleaning up 578 waste sites, demolishing 324 buildings, placing two plutonium production reactors and one nuclear facility in interim safe storage, and operating the Environmental Restoration Disposal Facility.


DOE's Largest Environmental Cleanup Closure Project