Mission | About Us
Located on the 586-square-mile Hanford Site in southeastern Washington state, the 220-square-mile River Corridor comprises the outer edge of the Hanford Site, including major portions of the Hanford Reach National Monument.
Washington Closure was selected by DOE to manage the project in August 2005. The contract ran through September 2016.
Our mission: Remove the environmental risk and hazards near the Columbia River Corridor through efficient, safe and compliant procedures while safeguarding people and the environment.
Columbia River Corridor
Cleanup of the Columbia River Corridor helps protect the river by removing contaminants that could enter the river. It also supports the DOE's vision for cleaning up the River Corridor and reducing the footprint of active cleanup at Hanford.
The River Corridor includes the land bordering the Columbia River. Within it, cleanup projects are located in:
- The 100 Area, where plutonium was produced in nine nuclear reactors
- The 300 Area, where uranium was fabricated, manufacturing and waste disposal processes were developed and research was conducted
- The 400 Area, where Fast Flux Test Facility and support facilities are located
- The 600 Area, where two challenging and highly radioactive burial grounds, 618-10 and 618-11, are located.