The Hanford Tanks Environmental Impacts and Policy Choices (1996) / Chapter Skim
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Executive Summary
Executive Summary
Pages 1-8
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As part of that mission, DOE and the State of Washington Department of Ecology prepared He Hanford Site Tank Waste Remediation System DraR Environmental Impact Statement 0)
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in light of these uncerta~n~aes, a phased decision strap Cat considers multiple alternatives involving bow ex sim and in sim disposal is needed, rawer Man a phased ~mplemen~on pan for a single alternative as DOE and He Washington State Department of Ecology propose In the DEIS, and (3) analyses in He finn1 environmental impact statement should be broadened and improved to support such a phased decision strategy.
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However, considenng He uncertainty in He cost and performance of He technologies required for He preferred altemauve, a fine period dunng which fielding is consigned is precisely He wrong time to drop work on alternatives Hat might achieve satisfactory results at a significantly lower cost. Having such alternatives available could allow re~ediation to proceed expeditiously, even if fielding constraints prevent timely implementation ofthe currently preferred altemative.
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In additon, Be plan for this phase does not consider promising ancillary technologies (some of which may already be under development In over parts of Be DOE Environmental Management programs such as subsur~ containment barriers, other materials and processes for s~bili~ng wastes led In the tanks, and a range of waste forms for Be low-a~vi~ matenals sepal from Be wastes removed from Be tanks, ah of which could play important roles in Be remediation approach ultimately selected. Decisions regarding tank remediation must consider risk cost, and technical feasibility.
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DOE should undertake a program of research, development, and pilot testing and demonstrations to resolve Me major process and technical uncertainties concerning single-sheD tariffs, while pursuing its plans to build a pilot treatment plant for double-shell Eric supematant. In Me ~ al phase of this program, technologies should be selected for evaluation based on technical merit and Me environmental consequences, and current regulatory policies should not rule out additional study of overwise attractive options.
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Each remediation approach select for analysis should include a plan for research on gaps in technical knowledge, environmental impacts, and over ~mpor~nt uncertainties. Rats of this research should inform Hose responsible for making subsequent decisions while scaling up from bench scale, to pilot plant, to filil-scale operation.
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7) The final environmental impact statement should be as usefid as possible to He public and decision makers outside DOE.
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8 HANFORD TANKS merely providing a description of alternatives and a comparative evaluation of Weir impacts by discussing Me cnucal elements Cat constituted He basis for He selection of He preferred altemative. In addition, to He extent possible, He relationship between the tactic waste remediai~on alternatives and over con~runanon and anbcipa~ cleanup actions at He Hanford Site should be analyzed.
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