JAN L. Henriksen, MSE, Inc., P.O. Box 3767, Butte, MT 59701

B -- NOTIFICATION OF REQUEST FOR TECHNICAL PAPERS PERTAINING TO SUBSURFACE BARRIER VERIFICATION AND MONITORING TECHNOLOGIES. RFI No. A58613. Contact Jan L. Henriksen (406-494-7304) or Ken Manchester (406-723-8213, Ext 221). No collect calls will be accepted. 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. Subsurface barriers represent one of the more promising remediation options available to the DOE waste management community, the Environmental Protection Agency, and the private sector. With barrier technologies being advanced to the field demonstration phase, the importance of emplacement verification and follow on monitoring becomes critical to the overall barrier technology success. At the present, there are few recognized methods for the verification and monitoring of barriers once they have been emplaced to the subsurface. Therefore, DOE has the need to develop and/or refine barrier verification and monitoring methods to determine the existence, size, and location of breaches in a subsurface barrier as well as barrier longevity. MSE has been tasked to identify promising barrier emplacement verification and monitoring technologies; review and classify each technology; and evaluate each in terms of technology and performance. The technologies should be able to quantify and locate any leaks through a subsurface barrier and determine quality of the barrier. Once the identification and evaluation steps have been completed, those technologies identified as having the greatest potential will be recommended to DOE for further development and testing. The purpose of this request is to identify all methods that have any capability of determining subsurface barrier integrity. Any technology, regardless of development stage, will be considered if it has potential to aid in the characterization of a subsurface barrier. These technologies may range from ideas that exist only on paper to those that are ready to be field implemented. The requested technical paper should address the following subjects: Technology Description, Technology Status, Technology Measurement Accuracy and Resolution, Relevant applications (existing or proposed), Proprietary Status of the Technology, and Key Project Personnel Vitae. The closing date for accepting responses will be August 18, 1995. Send all responses to Jan L. Henriksen, MSE, Inc., P.O. Box 3767, Butte, MT 59701. (201)

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