A Mountain-Scale Monitoring Network for Yucca Mountain PerformanceConfirmation

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Confirmation of the performance of Yucca Mountain is required by 10 CFR Part 63.131 to indicate, where practicable, that the natural system acts as a barrier, as intended. Hence, performance confirmation monitoring and testing would provide data for continued assessment during the pre-closure period. In general, to carry out testing at a relevant scale is always important, and in the case of performance confirmation, it is particularly important to be able to test at the scale of the repository. We view the large perturbation caused by construction of the repository at Yucca Mountain as a unique opportunity to study the ... continued below

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Freifeld, Barry & Tsang, Yvonne January 20, 2006.

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Confirmation of the performance of Yucca Mountain is required by 10 CFR Part 63.131 to indicate, where practicable, that the natural system acts as a barrier, as intended. Hence, performance confirmation monitoring and testing would provide data for continued assessment during the pre-closure period. In general, to carry out testing at a relevant scale is always important, and in the case of performance confirmation, it is particularly important to be able to test at the scale of the repository. We view the large perturbation caused by construction of the repository at Yucca Mountain as a unique opportunity to study the large-scale behavior of the natural barrier system. Repository construction would necessarily introduce traced fluids and result in the creation of leachates. A program to monitor traced fluids and construction leachates permits evaluation of transport through the unsaturated zone and potentially downgradient through the saturated zone. A robust sampling and monitoring network for continuous measurement of important parameters, and for periodic collection of agrochemical samples, is proposed to observe thermo-hydrogeochemical changes near the repository horizon and down to the water table. The sampling and monitoring network can be used to provide data to (1) assess subsurface conditions encountered and changes in those conditions during construction and waste emplacement operations; and (2) for modeling to determine that the natural system is functioning as intended.

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  • 2006 International High Level Radioactive WasteManagement Conference, Las Vegas, NV, 20 April - 4 May2006

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  • Report No.: LBNL--59459
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 908491
  • Archival Resource Key: ark:/67531/metadc883133

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  • January 20, 2006

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  • Sept. 22, 2016, 2:13 a.m.

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  • Sept. 30, 2016, 2:27 p.m.

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Freifeld, Barry & Tsang, Yvonne. A Mountain-Scale Monitoring Network for Yucca Mountain PerformanceConfirmation, article, January 20, 2006; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc883133/: accessed August 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.