Surficial geology and performance assessment for a Radioactive Waste Management Facility at the Nevada Test Site

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At the Nevada Test Site, one potentially disruptive scenario being evaluated for the Greater Confinement Disposal (GCD) Facility Performance Assessment is deep post-closure erosion that would expose buried radioactive waste to the accessible environment. The GCD Facility located at the Area 5 Radioactive Waste Management Site (RWMS) lies at the juncture of three alluvial fan systems. Geomorphic surface mapping in northern Frenchman Flat indicates that reaches of these fans where the RWMS is now located have been constructional since at least the middle Quaternary. Mapping indicates a regular sequence of prograding fans with entrenchment of the older fan surfaces near ... continued below

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5 p.

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Snyder, K.E.; Gustafson, D.L.; Huckins-Gang, H.E.; Miller, J.J. & Rawlinson, S.E. February 1, 1995.

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Description

At the Nevada Test Site, one potentially disruptive scenario being evaluated for the Greater Confinement Disposal (GCD) Facility Performance Assessment is deep post-closure erosion that would expose buried radioactive waste to the accessible environment. The GCD Facility located at the Area 5 Radioactive Waste Management Site (RWMS) lies at the juncture of three alluvial fan systems. Geomorphic surface mapping in northern Frenchman Flat indicates that reaches of these fans where the RWMS is now located have been constructional since at least the middle Quaternary. Mapping indicates a regular sequence of prograding fans with entrenchment of the older fan surfaces near the mountain fronts and construction of progressively younger inset fans farther from the mountain fronts. At the facility, the oldest fan surfaces are of late Pleistocene and Holocene age. More recent geomorphic activity has been limited to erosion and deposition along small channels. Trench and pit wall mapping found maximum incision in the vicinity of the RWMS to be less than 1.5 m. Based on collected data, natural geomorphic processes are unlikely to result in erosion to a depth of more than approximately 2 m at the facility within the 10,000-year regulatory period.

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5 p.

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INIS; OSTI as DE95008985

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  • Waste management `95, Tucson, AZ (United States), 26 Feb - 2 Mar 1995

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  • Other: DE95008985
  • Report No.: DOE/NV/10833--25
  • Report No.: CONF-950216--82
  • Grant Number: AC08-91NV10833
  • Office of Scientific & Technical Information Report Number: 35355
  • Archival Resource Key: ark:/67531/metadc676175

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • February 1, 1995

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  • July 25, 2015, 2:20 a.m.

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  • Dec. 4, 2015, 12:51 p.m.

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Snyder, K.E.; Gustafson, D.L.; Huckins-Gang, H.E.; Miller, J.J. & Rawlinson, S.E. Surficial geology and performance assessment for a Radioactive Waste Management Facility at the Nevada Test Site, article, February 1, 1995; United States. (digital.library.unt.edu/ark:/67531/metadc676175/: accessed April 25, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.