Public Comment Period and Meeting on Proposed Changes to Expand Tank Treatment Capabilities in Hanford’s 200 East Area
The U.S. Department of Energy is holding a 60-day public comment period and meeting on a proposed Class 3 permit modification to the Hanford Dangerous Waste Permit. If approved, the modification would allow additional cesium removal process modules, called the Advanced Modular Pretreatment System (AMPS), to be added to the permit for the Low-Activity Waste Pretreatment System Operating Unit Group. Additional modules are needed to ensure the Waste Treatment and Immobilization Plant can operate continuously. AMPS will have double the processing capacity of the existing Tank-Side Cesium Removal System (TSCR).
Together TSCR and AMPS will remove 99.9% of cesium radioactivity from liquid waste from Hanford’s tank farms to produce pretreated low-activity waste ready to be immobilized. The Low-Activity Waste Pretreatment System Operating Unit Group is in the 200 East Area of the Hanford Site.
The comment period runs from Aug. 14 through Oct. 13, 2026. A hybrid public meeting will be held Sept. 2, at 5:30 p.m. PT, in the Gallery Room of the Richland Public Library, 955 Northgate Drive, Richland, WA 99352. You may participate virtually using Microsoft Teams by following these instructions:
Join on your computer or Teams mobile app
Click here to join the meeting
https://bit.ly/4ezb3eU
Or call in (audio only)
509-931-1284 United States
833-633-0875 United States (toll-free)
Conference ID: 989 822 182#
Please submit any comments by Oct. 13, electronically (preferred) or by mail to:
Washington State Department of Ecology
3100 Port of Benton Boulevard
Richland, WA 99354
The proposed permit modification and supporting documentation will be available online during the public comment period on the Hanford Administrative Record, and at the Hanford Public Information Repositories.
Additional Information:
Questions? Please contact Dana Cowley, Hanford Mission Integration Solutions at dana_c_gribble@rl.gov, or Daina McFadden, Washington State Department of Ecology at Hanford@ecy.wa.gov.
Please contact dana_c_gribble@rl.gov at least 10 working days prior to the event if you need special access.
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