Central Plateau Cleanup Company (CPCCo) is helping advance one of the nation’s most important environmental cleanup missions at Hanford. CPCCo’s work focuses on reducing risk to people and the environment through safe waste site remediation, waste disposition, groundwater treatment, facility deactivation and demolition and long-term cleanup infrastructure. Current priorities include transferring WESF capsules to dry storage, restarting TRU waste shipments, advancing 324 Building risk reduction, demolishing legacy facilities and expanding ERDF disposal capacity. Together, these efforts support steady, measurable progress across the Hanford Site. 

	Move WESF Capsules to Dry Storage In January 2026, CPCCo began transferring 1,936 radioactive cesium and strontium capsules from underwater storage at the Waste Encapsulation and Storage Facility (WESF) into a concrete cask system and to a safe, secure dry storage area on the Hanford Site. Completing the transfer will support the eventual deactivation and decommissioning of WESF, further reducing Central Plateau infrastructure risk and long-term maintenance demands. LEARN MORE
	Operate IDF to Support Tank Waste Treatment  The Integrated Disposal Facility (IDF) began receiving containers of vitrified (immobilized in glass) low-activity waste from Hanford’s Waste Treatment and Immobilization Plant in October 2025, a key achievement in the site’s tank waste treatment mission. IDF provides a safe, permanent disposal site for the vitrified waste, making it a critical part of the One Hanford strategy to safely treat tank waste and reduce long-term environmental risk. LEARN MORE
	Increase Groundwater Treatment Capacity and Capability Hanford’s groundwater program has been a model of consistency – treating more than 2 billion gallons of contaminated groundwater annually for 12 straight years. CPCCo continues to invest in more efficient and cost-effective technologies to enhance treatment systems and methods, with protection of the nearby Columbia River as our ultimate goal. Recent infrastructure upgrades to Hanford’s largest groundwater treatment plant allow us to more effectively target the most challenging contamination plumes beneath the Central Plateau. LEARN MORE
	Restart TRU Waste Shipments Preparations are underway to restart shipment of transuranic (TRU) waste from Hanford to the Waste Isolation Pilot Plant near Carlsbad, New Mexico. Work is focused on waste certification, characterization and packaging in coordination with the DOE Carlsbad Field Office to ensure waste containers meet the WIPP acceptance criteria. Restarting shipments is an important step in reducing Hanford’s waste inventory and advancing broader cleanup commitments. LEARN MORE
	Advance 324 Building Demo Preparations The 324 Building is undergoing extensive preparations for demolition. This includes decontaminating the facility, removing hazardous materials and securing the surrounding area. Progress includes the recent completion of critical stabilization activities in the most hazardous areas of the building including four highly contaminated hot cells and six tanks located inside the high- and low-level vaults. Demolition of the 324 Building will mark a significant milestone in reducing the site's radiological footprint and mitigating potential risks to workers and the environment. LEARN MORE
	Demolish Legacy Facilities to Reduce Site Risk and Cost Demolishing outdated and obsolete facilities is part of CPCCo’s strategy to reduce overall risk to the public and the environment and provide cost savings by eliminating or reducing the frequency of surveillance and maintenance activities. Since 2021, CPCCo has cocooned the K East Reactor, remediated 113 waste sites, demolished 70 facilities, and removed a million gallons of highly contaminated water from the K West Reactor’s spent fuel basin. Other efforts include preparing the site canyon facilities and support structures in the 100 K Area for eventual demolition and disposal. LEARN MORE
	Expand ERDF Capacity Through Super Cell 11 Construction The Environmental Restoration Disposal Facility (ERDF) is expanding its capacity with the construction of Super Cell 11. This new cell will provide additional space for the safe disposal of contaminated materials generated from Hanford cleanup activities. More than 19 million tons of contaminated material has been disposed of at ERDF since the facility began operations in 1996. Expanding ERDF's capacity is essential for supporting the site's long-term remediation efforts and ensuring compliance with environmental regulations. Super Cell 11 is expected to be completed by early 2027. LEARN MORE

White Bluffs on the Hanford Reach of the Columbia River