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PAPERBACK price:$39.00 add to cart Rights & Permissions Free PDF Access Sign in to download PDF book and chapters Free Resources Display this book on your site! Related Titles Assessment of the Performance of Engineered Waste Containment Barriers Alternatives for Ground Water Cleanup Other Related Titles Barrier Technologies for Environmental Management: Summary of a Workshop (1997) Commission on Geosciences, Environment and Resources (CGER) Citation Manager Export the bibliographic data for this book in your chosen format Web Search Builder Use this book's key terms to search within this book, across our collection, or across the Web. Skim This Chapter Skim this chapter and use this chapter's key terms to search within this book. Reference Finder Paste in your own text to find books that relate to your topic. Citation Manager . "Executive Summary." Barrier Technologies for Environmental Management: Summary of a Workshop. Washington, DC: The National Academies Press, 1997. Please select a format: Page 1   E-mail Share on facebook Facebook Share on delicious Delicious Share on stumbleupon Stumble Share on twitter Twitter More Sharing ServicesMore The following HTML text is provided to enhance online readability. Many aspects of typography translate only awkwardly to HTML. Please use the page image as the authoritative form to ensure accuracy. Executive Summary Remediation of radioactive and mixed waste located in the U.S. Department of Energy (DOE) nuclear weapons complex will require increased use of physical barriers to prevent the spreading of contaminants during interim periods of cleanup and the migration of contaminants left behind upon completion of the cleanup. To raise the level of awareness of available technologies and to provide information on the current knowledge of barrier performance through technology development and actual installation, the Committee on Remediation of Buried and Tank Wastes and representatives of the DOE Office of Environmental Restoration organized a 1-day workshop on engineered barriers. Participants in this workshop included government researchers and contractors, as well as barrier designers and builders from private industries. This summary report is a synthesis of the oral discussions at the workshop. It does not express opinions of the committee. The committee issued a report recently, entitled The Potential Role of Containment-in-Place in an Integrated Approach to the Hanford Reservation Site Environmental Remediation (National Research Council, 1996), on the potential use of barriers at a DOE site. Not all waste problems can be solved by excavating and treating the wastes. Proper use of effective barrier technologies can provide both interim containment while more permanent remedial technologies are being developed, and longer-term isolation of radioactive and hazardous contaminants remaining after remediation. Consequently, barriers such as surface caps and subsurface vertical and horizontal barriers will be needed as important components of remediation strategies. Several themes emerged during the discussions at the workshop: The importance of employing proper installation techniques and quality control measures, especially during construction, including using contractors with demonstrated experience and skill. The need for knowledge concerning effective lifetimes of selected barrier materials and resultant barrier systems. The importance of periodic inspection, maintenance, and monitoring of containment barriers. The current dearth of barrier performance monitoring data. The advantages of using barriers in combination with pump-and-treat approaches. The importance of compiling data on both successful and unsuccessful barrier installations. Although these issues were not explored fully during the workshop, they will serve as good starting points for future discussion on containment technology. Appendix D to this summary report Page 1 Front Matter (R1-R10) Executive Summary (1-2) Introduction (3-3) Workshop Overview (4-5) Themes Identified at Workshop (6-6) References (7-8) Appendix A: Biographical Sketches of Committee Members (9-14) Appendix B: Program Outline (15-16) Appendix C: Participants (17-18) Appendix D: Table of Contents of Papers Presented (19-20) Development and Testing of Permanent Isolation Surface Barriers at the Hanford Site (21-40) New Technologies for Subsurface Barrier Wall Construction (41-53) Ecology, Design, and Long-Term Performance of Surface Barriers: Applications at a Uranium Mill Tailings Site (54-67) Soil, Plant and Structural considerations for Surface Barriers in Arid Environments: Application of Results from Studies in the Mojave Desear near Beatty, Nevada (68-78) Natural Physical and Biological Processes Compromise the Long-term Performance of Compacted Soil Caps (79-88) Geomembranes in Surface Barriers (89-96) Earthen Materials in Surface Barriers (97-107) Comparison of Clay and Asphaltic Materials for Use as Low-Permeability Layers in Engineered Covers at the Rocky Flats Environmental Technology Site (108-118) Alternatives for Ground Water Cleanup (119-132) Construction of Deep Barrier Walls for Waste Containment (133-141) Self-Hardening Slurries and Stable Grouts from Cement-Bentonite to IMPERMIX (142-149) A Field Test of Permeation Grouting in Heterogeneous Soils Using a New Generation of Barrier Liquids (150-161) Sealable Joint Steel Sheet Piling for Ground-Water Pollution Control (162-170) Artifically Frozen Ground as a Subsurface Barrier Technology (171-179)

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Executive Summary Remediation of radioactive and mixed waste located in the U.S. Department of Energy (DOE) nuclear weapons complex will require increased use of physical barriers to prevent the spreading of contaminants during interim periods of cleanup and the migration of contaminants left behind upon completion of the cleanup. To raise the level of awareness of available technologies and to provide information on the current knowledge of barrier performance through technology development and actual installation, the Committee on Remediation of Buried and Tank Wastes and representatives of the DOE Office of Environmental Restoration organized a 1-day workshop on engineered barriers. Participants in this workshop included government researchers and contractors, as well as barrier designers and builders from private industries. This summary report is a synthesis of the oral discussions at the workshop. It does not express opinions of the committee. The committee issued a report recently, entitled The Potential Role of Containment-in-Place in an Integrated Approach to the Hanford Reservation Site Environmental Remediation (National Research Council, 1996), on the potential use of barriers at a DOE site. Not all waste problems can be solved by excavating and treating the wastes. Proper use of effective barrier technologies can provide both interim containment while more permanent remedial technologies are being developed, and longer-term isolation of radioactive and hazardous contaminants remaining after remediation. Consequently, barriers such as surface caps and subsurface vertical and horizontal barriers will be needed as important components of remediation strategies. Several themes emerged during the discussions at the workshop: The importance of employing proper installation techniques and quality control measures, especially during construction, including using contractors with demonstrated experience and skill. The need for knowledge concerning effective lifetimes of selected barrier materials and resultant barrier systems. The importance of periodic inspection, maintenance, and monitoring of containment barriers. The current dearth of barrier performance monitoring data. The advantages of using barriers in combination with pump-and-treat approaches. The importance of compiling data on both successful and unsuccessful barrier installations. Although these issues were not explored fully during the workshop, they will serve as good starting points for future discussion on containment technology. Appendix D to this summary report

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contains papers prepared by the workshop presenters. These papers will serve as a supplement to other recent compilations of work on barrier technology.

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installation techniques