Zhang Keller 2006a - Revision history

Scipediacontent at 16:01, 25 January 2021

2021-01-25T16:01:51Z

Scipediacontent at 10:24, 22 January 2021

2021-01-22T10:24:18Z

Scipediacontent: Scipediacontent moved page Draft Content 628074409 to Zhang Keller 2006a

2020-10-26T11:27:40Z

Scipediacontent moved page Draft Content 628074409 to Zhang Keller 2006a

Scipediacontent: Created page with " == Abstract == The Hanford Site has 149 underground single-shell tanks that store hazardous radioactive waste. Many of these tanks and their associated infrastructure (e.g.,..."

2020-10-26T11:27:38Z

Created page with " == Abstract == The Hanford Site has 149 underground single-shell tanks that store hazardous radioactive waste. Many of these tanks and their associated infrastructure (e.g.,..."

New page

== Abstract ==

The Hanford Site has 149 underground single-shell tanks that store hazardous radioactive waste. Many of these tanks and their associated infrastructure (e.g., pipelines, diversion boxes) have leaked. Some of the leaked waste has entered the groundwater. The largest known leak occurred from the T-106 Tank in 1973. Many of the contaminants from that leak still reside within the vadose zone beneath the T Tank Farm. CH2M Hill Hanford Group, Inc. seeks to minimize movement of this residual contaminant plume by placing an interim cover on the surface. Such a cover is expected to prevent infiltrating water from reaching the plume and moving it further. Pacific Northwest National Laboratory has prepared a design plan to monitor and determine the effectiveness of the interim cover. A three-dimensional numerical simulation of water movement beneath a cover was conducted to guide the design of the plan. Soil water content, water pressure, and temperature will be monitored using off-the-shelf equipment that can be installed by the hydraulic hammer technique. In fiscal year 2006, two instrument nests will be installed, one inside and one outside of the proposed cover. In fiscal year 2007, two additional instrument nests, both inside the proposed cover, will be installed. EachmoreÂ Â» instrument nest contains a neutron access tube and a capacitance probe (to measure water content), and four heat-dissipation units (to measure pressure head and temperature). A datalogger and a meteorological station will be installed outside of the fence. Two drain gauges will be installed in locations inside and outside the cover for the purpose of measuring soil water flux.Â«Â le

Document type: Report

== Full document ==
<pdf>Media:Draft_Content_628074409-beopen351-2635-document.pdf</pdf>

== Original document ==

The different versions of the original document can be found in:

* [http://dx.doi.org/10.2172/896363 http://dx.doi.org/10.2172/896363]

* [https://digital.library.unt.edu/ark:/67531/metadc889859/m2/1/high_res_d/896363.pdf https://digital.library.unt.edu/ark:/67531/metadc889859/m2/1/high_res_d/896363.pdf]

* [https://digital.library.unt.edu/ark:/67531/metadc889859/m2/1/high_res_d/896363.pdf https://digital.library.unt.edu/ark:/67531/metadc889859/m2/1/high_res_d/896363.pdf],[http://www.pnl.gov/main/publications/external/technical_reports/PNNL-15913rev0.pdf http://www.pnl.gov/main/publications/external/technical_reports/PNNL-15913rev0.pdf],[https://core.ac.uk/display/101668939 https://core.ac.uk/display/101668939],[https://academic.microsoft.com/#/detail/1525886888 https://academic.microsoft.com/#/detail/1525886888]

← Older revision		Revision as of 16:01, 25 January 2021
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	== Abstract ==		== Abstract ==

−	The Hanford Site has 149 underground single-shell tanks that store hazardous radioactive waste. Many of these tanks and their associated infrastructure (e.g., pipelines, diversion boxes) have leaked. Some of the leaked waste has entered the groundwater. The largest known leak occurred from the T-106 Tank in 1973. Many of the contaminants from that leak still reside within the vadose zone beneath the T Tank Farm. CH2M Hill Hanford Group, Inc. seeks to minimize movement of this residual contaminant plume by placing an interim cover on the surface. Such a cover is expected to prevent infiltrating water from reaching the plume and moving it further. Pacific Northwest National Laboratory has prepared a design plan to monitor and determine the effectiveness of the interim cover. A three-dimensional numerical simulation of water movement beneath a cover was conducted to guide the design of the plan. Soil water content, water pressure, and temperature will be monitored using off-the-shelf equipment that can be installed by the hydraulic hammer technique. In fiscal year 2006, two instrument nests will be installed, one inside and one outside of the proposed cover. In fiscal year 2007, two additional instrument nests, both inside the proposed cover, will be installed. ~~EachmoreÂ Â»~~ instrument nest contains a neutron access tube and a capacitance probe (to measure water content), and four heat-dissipation units (to measure pressure head and temperature). A datalogger and a meteorological station will be installed outside of the fence. Two drain gauges will be installed in locations inside and outside the cover for the purpose of measuring soil water flux.~~Â«Â le~~	+	The Hanford Site has 149 underground single-shell tanks that store hazardous radioactive waste. Many of these tanks and their associated infrastructure (e.g., pipelines, diversion boxes) have leaked. Some of the leaked waste has entered the groundwater. The largest known leak occurred from the T-106 Tank in 1973. Many of the contaminants from that leak still reside within the vadose zone beneath the T Tank Farm. CH2M Hill Hanford Group, Inc. seeks to minimize movement of this residual contaminant plume by placing an interim cover on the surface. Such a cover is expected to prevent infiltrating water from reaching the plume and moving it further. Pacific Northwest National Laboratory has prepared a design plan to monitor and determine the effectiveness of the interim cover. A three-dimensional numerical simulation of water movement beneath a cover was conducted to guide the design of the plan. Soil water content, water pressure, and temperature will be monitored using off-the-shelf equipment that can be installed by the hydraulic hammer technique. In fiscal year 2006, two instrument nests will be installed, one inside and one outside of the proposed cover. In fiscal year 2007, two additional instrument nests, both inside the proposed cover, will be installed. Eachmore » instrument nest contains a neutron access tube and a capacitance probe (to measure water content), and four heat-dissipation units (to measure pressure head and temperature). A datalogger and a meteorological station will be installed outside of the fence. Two drain gauges will be installed in locations inside and outside the cover for the purpose of measuring soil water flux.« le

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 The Hanford Site has 149 underground single-shell tanks that store hazardous radioactive waste. Many of these tanks and their associated infrastructure (e.g., pipelines, diversion boxes) have leaked. Some of the leaked waste has entered the groundwater. The largest known leak occurred from the T-106 Tank in 1973. Many of the contaminants from that leak still reside within the vadose zone beneath the T Tank Farm. CH2M Hill Hanford Group, Inc. seeks to minimize movement of this residual contaminant plume by placing an interim cover on the surface. Such a cover is expected to prevent infiltrating water from reaching the plume and moving it further. Pacific Northwest National Laboratory has prepared a design plan to monitor and determine the effectiveness of the interim cover. A three-dimensional numerical simulation of water movement beneath a cover was conducted to guide the design of the plan. Soil water content, water pressure, and temperature will be monitored using off-the-shelf equipment that can be installed by the hydraulic hammer technique. In fiscal year 2006, two instrument nests will be installed, one inside and one outside of the proposed cover. In fiscal year 2007, two additional instrument nests, both inside the proposed cover, will be installed. EachmoreÂ Â» instrument nest contains a neutron access tube and a capacitance probe (to measure water content), and four heat-dissipation units (to measure pressure head and temperature). A datalogger and a meteorological station will be installed outside of the fence. Two drain gauges will be installed in locations inside and outside the cover for the purpose of measuring soil water flux.Â«Â le
@@ Line 18: / Line 13: @@
 * [https://digital.library.unt.edu/ark:/67531/metadc889859/m2/1/high_res_d/896363.pdf https://digital.library.unt.edu/ark:/67531/metadc889859/m2/1/high_res_d/896363.pdf]
-* [https://digital.library.unt.edu/ark:/67531/metadc889859/m2/1/high_res_d/896363.pdf https://digital.library.unt.edu/ark:/67531/metadc889859/m2/1/high_res_d/896363.pdf],[http://www.pnl.gov/main/publications/external/technical_reports/PNNL-15913rev0.pdf http://www.pnl.gov/main/publications/external/technical_reports/PNNL-15913rev0.pdf],[https://core.ac.uk/display/101668939 https://core.ac.uk/display/101668939],[https://academic.microsoft.com/#/detail/1525886888 https://academic.microsoft.com/#/detail/1525886888]
+* [https://core.ac.uk/display/101668939 https://core.ac.uk/display/101668939],

← Older revision	Revision as of 11:27, 26 October 2020
(No difference)