DOE has prepared this Draft Supplement Analysis to assess the Proposed Action of implementing alternative treatment of 200 West Area tank wastes from 22 to 24 single shell waste storage tanks from the S, SX, and U tank farms at the Hanford Site in southeastern Washington. Comment period closes May 23, 2025.
Office of NEPA Policy and Compliance
March 25, 2025
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200 West Area Tank Waste Treatment; Richland, Washington
DOE has prepared this Draft Supplement Analysis in accordance with DOE’s National Environmental Policy Act implementing procedures (Title 10 Code of Federal Regulations Part 1021) to assess the Proposed Action of implementing alternative treatment of 200 West Area tank wastes from 22 to 24 single shell waste storage tanks (SSTs) from the S, SX, and U tank farms. Approximately 32 million gallons of pretreated tank waste from 200 West Area would be treated (on or off site) and disposed of at appropriately licensed and permitted commercial treatment, storage, and disposal (TSD) facilities by 2040.
Hanford has initiated a public comment period that will run through May 23, 2025. For more information, see Tank Closure and Waste Management for the Hanford Site.