March 24 to April 23 May 23, 2025

Public Comment Period on a Draft Supplement Analysis for the West Area Tank Treatment Mission to Comply with the National Environmental Policy Act 

The U.S. Department of Energy (DOE) is holding a 30 60-day public comment period on its supplement analysis for the West Area Tank Treatment Mission at the Hanford Site in southeastern Washington state.

The draft analysis evaluates whether DOE’s plans to pretreat tank waste from the 200 West Area, grout on-site and/or off-site, and to transport and dispose of it in permitted, off-site facilities requires a new environmental impact statement, a supplemental statement, or no additional review under the National Environmental Policy Act (NEPA). The draft is being prepared in accordance with NEPA implementing procedures at 10 CFR 1021.314.

The comment period runs from March 24 to April 23 May 23, 2025.

All comments should be submitted electronically by April 23 May 23, to NEPA_SA@rl.gov (preferred), or via mail to:

Attn: Dana Cowley
Hanford Mission Integration Solutions
P.O. Box 450, H5-20
Richland, WA 99354

The Draft Supplement Analysis for the West Area Tank Treatment Mission is available online during the comment period in the Administrative Record and at the Hanford Public Information Repositories. 

Questions? Please contact Dana Cowley, at Dana_C_Gribble@rl.gov.

To request disability accommodation, please contact Dana Cowley, Dana_C_Gribble@rl.gov.