MSE Technology Applications Inc., Western Environmental Technology Office, P.O. Box 3767, Butte, MT 59702

C -- REQUEST FOR INFORMATION, IN SITU SUBSURFACE BARRIERS SOL A59761. Contact Point: Michael Rubich, 406-494-7433 or 406-723-8213. MSE, Inc. under Prime Contract No. DE-AC22-881D17235 with the U.S. Department of Energy (DOE) operates the Western Environmental Technology Office (WETO) in Butte, Montana. In situ subsurface barriers represent a promising remedial option to the DOE waste management community, the Environmental Protection Agency, and the private sector. The DOE is interested in surveying the present market to determine the types of subsurface barrier systems, methodologies, or technologies that are currently available, and the experience of designers, vendors, and contractors with use of these systems for in situ waste containment. Barrier systems are considered to be either vertical barrier walls or horizontal floors or combinations of the two. Along with identifying the available methods for in situ waste containment, DOE is interested in obtaining specific information regarding each system. The requested information includes: the state of development of the method or technology; previous applications of the system for waste containment; performance data for the barrier system; the anticipated life expectancy of the system; the characteristics of the barrier system; the limitations of the system in regards to site requirements, waste compatibility, and other potential limitations; permeability of the system, and costs of installation and ongoing maintenance. The DOE is also interested in identifying system designers and installers. This RFI is also request for a summary of qualifications and experience in the design and installation of in situ subsurface barriers for waste containment from the engineering community, the construction community; and technology vendors. Information obtained from this request will be consolidated into an information base and provided to potential users within the DOE. (296)

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