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Event: Public Comment Period for New Construction Additions to the Effluent Treatment Facility
Category: Public Comment Periods
Event Date: April 6 - June 4, 2022

Public Comment Period on a Class 2 Permit Modification to the Hanford Dangerous Waste Permit, “Liquid Effluent Retention Facility and 200 Area Effluent Treatment Facility” Chapter

The U.S. Department of Energy 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 necessary to add an Acetonitrile Distillate Loadout Facility, acetonitrile distillate tote storage, acetonitrile distillate storage tanks, and brine storage tanks to the 200 Area Effluent Treatment Facility (ETF). These new dangerous-waste management units are necessary to support waste management operations resulting from the receipt of liquid effluent from Hanford’s Waste Treatment and Immobilization Plant.

The Liquid Effluent Retention Facility and ETF are mixed-waste treatment and storage units for treating liquid effluents from operating Hanford cleanup facilities. These facilities will process liquid waste from the Waste Treatment and Immobilization Plant in support of Hanford’s Direct-Feed Low-Activity Waste Program for treating tank waste.

The comment period will run from April 6 through June 4, 2022. A virtual public meeting will be held on May 10, 2022, at 5:30 p.m. PT. To participate via Microsoft Teams, please follow the instructions below:

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

Join with a video conferencing device
Video Conference ID: 115 997 854 6

Or call in (audio only)
(509) 931-1284 United States
(833) 633-0875 United States (Toll-free)
Phone Conference ID: 258 551 990#

Please submit any comments by June 4, 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 are 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 Dana Gribble, Hanford Mission Integration Solutions, at, or Daina McFadden, Washington State Department of Ecology, at

Fact Sheet
New Construction Additions to the Effluent Treatment Facility Public Meeting
Meeting Evaluation

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