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Event: Public Comment Period for Groundwater Monitoring Plan at the LERF/ETF
Category: Public Comment Periods
Event Date: March 29 - May 28

Public Comment Period and Virtual Meeting on a Class 2 Permit Modification to the Hanford Dangerous Waste Permit, Addendum D, “Groundwater Monitoring Plan.”

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 will update Addendum D, “Groundwater Monitoring Plan.”

The Liquid Effluent Retention Facility and 200 Area Effluent Treatment Facility are mixed-waste treatment and storage units for treating liquid effluents from operating 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 using the Direct-Feed Low-Activity Waste approach. 

The comment period runs from March 29 through May 28. A virtual public meeting will be held April 26 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: 118 130 662 1

Or call in (audio only)
(509) 931-1284 United States
(833) 633-0875 United States (Toll-free)
Phone Conference ID: 372 184 149#

Please submit any comments by May 28, 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 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,, at least 10 working days prior to the event.

Fact Sheet
Meeting Presentation
LERF ETF Groundwater Monitoring Plan Public Meeting

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