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We're holding a 45-day public comment period addressing proposed modifications to the dangerous waste portion for the treatment, storage, and disposal of dangerous waste, Waste Encapsulation and Storage Facility (WESF).
The Permittees are the U.S. Department of Energy (Energy), Office of River Protection and CH2MHILL Plateau Remediation Company. WESF is located on the Hanford Site in southeastern Washington.
This modification will add the WESF Operating Unit Group to the Sitewide Permit. The WESF Operating Unit Group is comprised of three new Dangerous Waste Management Units (DWMUs): Hot Cell G DWMU, Pool Cells DWMU, and Truckport DWMU.
The WESF Hot Cells A through F are already incorporated in the Sitewide Permit as a Closing Unit Group. This Closing Unit Group is comprised of one DWMU and it will not be modified by this permitting action.
WESF currently stores 1,936 highly radioactive cesium and strontium capsules. Cesium and strontium were moved from Hanford's underground waste tanks to WESF in the 1970s to reduce temperature in the tanks. More background information on WESF is available on Energy's website.
The modification proposal and supporting documents are on our Hanford public comment periods page.
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