Final Review of the Study on Supplemental Treatment Approaches of Low-Activity Waste at the Hanford Nuclear Reservation

The U.S. Department of Energy's Office of Environmental Management is responsible for managing and cleaning up the waste and contamination at the Hanford Nuclear Reservation, the nation's biggest and most complex nuclear cleanup challenge. At the site, 177 underground tanks collectively contain about 211 million liters of waste that includes high-activity and low-activity materials.At the request of Congress, Final Review of the Study on Supplemental Treatment Approaches of Low-Activity Waste at the Hanford Nuclear Reservation: Review #4 focuses on approaches for treatment and disposal of the supplemental portion of the low-activity waste from the tanks. This review report discusses developments since the publication of Review #3 and provides a summary of public comments on the third committee review report. The authoring committee then shares their views on these comments and whether they change any of the findings or recommendations in the third review report.Table of ContentsFront MatterSummary1 Introduction2 Developments Since Publication of Review #33 Themes of the Comments Received During the Comment Period4 The Committee's Observations and Responses to Comments5 ConclusionReferencesAppendix A: Major Parts of Review of the Final Draft Analysis ofSupplemental Treatment Approaches of Low-Activity Waste at theHanford Nuclear Reservation: Review #3Appendix B: Executive Summary from the Federally Funded Researchand Development Center's Report of Analysis of Approaches toSupplemental Treatment of Low-Activity Waste at the Hanford NuclearReservationAppendix C: Section 3134 of Fiscal Year 2017 National DefenseAuthorization ActAppendix D: Statement of TaskAppendix E: Presentations at the Committee's Information-GatheringMeetings and List and Summary of Comments Received During thePublic Comment PeriodAppendix F: Biographical Sketches of the Committee, TechnicalAdviser, and Study DirectorAppendix G: Acronyms and Abbreviations