To control the migration of radioactive and hazardous wastes currently contained underground, barriers made of natural materials and man-made substances are constructed atop, and possibly around, the contaminated area. Barrier Technologies for Environmental Management provides a brief summary of the key issues that arose during the Workshop on Barriers for Long-Term Isolation. Recurring themes from the session include the importance of quality control during installation, followed by periodic inspection, maintenance, and monitoring, and documentation of installation and performance data. The book includes papers by the workshop presenters.

Table of Contents


Front Matter
Executive Summary
Introduction
Workshop Overview
Themes Identified at Workshop
References
Appendix A: Biographical Sketches of Committee Members
Appendix B: Program Outline
Appendix C: Participants
Appendix D: Table of Contents of Papers Presented
Development and Testing of Permanent Isolation Surface Barriers at the Hanford Site
New Technologies for Subsurface Barrier Wall Construction
Ecology, Design, and Long-Term Performance of Surface Barriers: Applications at a Uranium Mill Tailings Site
Soil, Plant and Structural considerations for Surface Barriers in Arid Environments: Application of Results from Studies in the Mojave Desear near Beatty, Nevada
Natural Physical and Biological Processes Compromise the Long-term Performance of Compacted Soil Caps
Geomembranes in Surface Barriers
Earthen Materials in Surface Barriers
Comparison of Clay and Asphaltic Materials for Use as Low-Permeability Layers in Engineered Covers at the Rocky Flats Environmental Technology Site
Alternatives for Ground Water Cleanup
Construction of Deep Barrier Walls for Waste Containment
Self-Hardening Slurries and Stable Grouts from Cement-Bentonite to IMPERMIX
A Field Test of Permeation Grouting in Heterogeneous Soils Using a New Generation of Barrier Liquids
Sealable Joint Steel Sheet Piling for Ground-Water Pollution Control
Artifically Frozen Ground as a Subsurface Barrier Technology