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October 29, 2021
Event: Public Comment Period on the New Procedures for Decontamination of the Liquid Effluent Retention Facility Basins and the 200 Area Effluent Treatment Facility Tank Systems
Category: Comment Period / Feedback Opportunity
Event Date: Oct. 26, 2021 – Dec. 27, 2021

Public Comment Period on Proposed Changes to the Hanford Dangerous Waste Permit

The U.S. Department of Energy (DOE) is holding a 60-day public comment period on a proposed Class 2 permit modification to the Hanford Dangerous Waste Permit, "Liquid Effluent Retention Facility and 200 Area Effluent Treatment Facility" chapter. This proposed permit modification is required to implement new procedures for decontamination of the Liquid Effluent Retention Facility (LERF) basins and the 200 Area Effluent Treatment Facility (ETF) tank systems.

The DOE and contractor Washington River Protection Solutions are requesting a Class 2 modification to the LERF and 200 Area ETF operating unit group of the Hanford Dangerous Waste Permit. The LERF and 200 Area ETF are mixed-waste treatment and storage units for treating liquid effluents from Hanford cleanup facilities. These facilities include the 242-A Evaporator and the Waste Treatment and Immobilization Plant’s Effluent Management Facility (when it becomes operational) to support treating tank waste through the Direct-Feed Low-Activity Waste Program.

The comment period runs from Oct. 26 through Dec. 27, 2021. A virtual public meeting will be held Nov. 30 at 5:30 p.m. PT. To participate via Microsoft Teams, please follow the instructions below:

Join on your computer or mobile app
Click here to join the meeting or

Join with a video conferencing device
Video Conference ID: 115 769 227 1
Alternate VTC instructions

Or call in (audio only)
+1 509-931-1284 United States, Spokane
(833) 633-0875 United States (Toll-free)
Phone Conference ID: 228 614 076#
Find a local number

Please submit any comments by Dec. 27, electronically (preferred) or by mail to:

Washington State Department of Ecology
3100 Port of Benton Boulevard
Richland, Washington 99354

The proposed permit modification and supporting documentation is available online during the public comment period on the Hanford events calendar, the Hanford Administrative Record, and at the Hanford Public Information Repositories. Please see the attached summary fact sheet.

Questions? Please contact Jennifer Colborn, Hanford Mission Integration Solutions, at, or Daina McFadden, Washington State Department of Ecology, at

To request disability accommodation, please contact Jennifer Colborn, or (509) 376-5840 at least 10 working days prior to the event. DOE makes every effort to honor disability accommodation requests.

Fact Sheet
Virtual Public Meeting Presentation
Virtual Public Meeting Recording

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