Groundwater and Soil Cleanup Improving Management of Persistent Contaminants (1999) / Chapter Skim
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6 Findings and Recommendations
6 Findings and Recommendations
Pages 240-250
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From page 240... ...
The Committee on Technologies for Cleanup of Subsurface Contaminants in the DOE Weapons Complex, at the request of DOE and in the course of preparing this report, developed a series of findings and recommendations for improving SCFA's technology development program. The major findings and recommendations are presented in this chapter and are based on the analyses provided in Chapters 2 through 5.
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From page 241... ...
Electrokinetic technologies appear promising for extraction of metal and radionuclide contaminants from fine-grained media, but additional field demonstrations are necessary to establish performance under field conditions encountered at DOE sites. · Recommendation: SCFA should consider funding work on the development of selective ion exchange media for use in reactive barriers.
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From page 242... ...
Methods will be needed to monitor the performance of containment barriers, because the longevity of barrier materials is uncertain. Electrical resistance tomography methods have received a significant amount of SCFA funding for studies of the integrity of subsurface barriers (including reactive barriers and conventional containment systems)
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From page 243... ...
Representative successful SCFA achievements in developing technologies for remediation of metals and radionuclides include in situ redox manipulation for chromium immobilization at Hanford, bottom barriers for waste containment at the Idaho National Engineering and Environmental Laboratory, the site characterization and analysis penetrometer system for characterization of subsurface environments in a wide range of settings, and the dig-face system for real-time guidance of excavations. Representative successful SCFA projects for developing DNAPL remediation technologies include dynamic underground stripping and thermally enhanced vapor extraction.
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From page 244... ...
Further, the total number of SCFA technology deployments is not a sufficient metric for evaluating the SCFA program. · Recommendation 1: SCFA should continue its efforts to work more closely with end users of remediation technologies (the DOE field personnel responsible for selecting these technologies)
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From page 245... ...
Regulatory policies concerning cleanup requirements for groundwater and soil are evolving rapidly toward more flexible approaches. These policies will affect the range of cleanup goals that are acceptable at DOE installations and, correspondingly, the suite of possible remediation technologies for achieving these goals.
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From page 246... ...
Project reports should include well-documented performance data, detailed cost estimates, design information useful to practitioners, and lessons learned. They should follow the guidelines in the Federal Remediation Technologies Roundtable's Guide to Documenting and Managing Cost and Performance Information for Remediation Projects (EPA, 1998~.
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From page 247... ...
The fiscal year 1999 budget of $25 million, while representing a significant increase, will allow for funding of only a limited number of projects. · Recommendation 1: DOE managers should reassess the priority of subsurface cleanup relative to other problems and, if the risk is sufficiently high, should increase remediation technology development funding accordingly.
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From page 248... ...
Political pressure to meet federal and state groundwater and soil remediation requirements at DOE installations continues and recently has created problems for DOE at facilities such as Hanford, where politicians have pressured the department for better efforts to clean up contamination in the vadose zone (the soil above the water table)
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From page 249... ...
1998. Guide to Documenting and Managing Cost and Performance Information for Remediation Projects.
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