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1996 1996

Hydrologic Resources Management Program. FY 1995 Progress Report

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Languages : en
Pages :

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Hydrologic Resources Management Program. FY 1995 Progress Report

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description

Laboratory and Field Studies Related to the Hydrologic Resources Management Program. Annual Progress Report, October 1, 1995--September 30, 1995

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Category :
Languages : en
Pages : 27

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Book Description
In this report we describe the work done at Los Alamos National Laboratory in FY 1995 for the Hydrologic Resources Management Program funded by the US Department of Energy/Nevada Operations office. Budgetary cuts have required us to scale back our activities, particularly field work at the Nevada Test Site. We have collaborated with a number of government agencies and universities in work related to radionuclide migration through geologic media. In cooperation with Lawrence Livermore National Laboratory, we have demonstrated the utility of high-sensitivity gamma logging and have successfully improved the design of a bailer routinely used for water sampling. We analyzed a suite of side-wall samples from the BASEBALL drill-back and have interpreted the distribution pattern of test-related radionuclides. Though heterogeneously distributed, they show a general separation of volatile and refractory fractions. The distribution pattern suggests that there has been little movement of radioactive material within this cavity, which is 13 years old and below the static water level. This characterization of the BASEBALL cavity/chimney complex may have important implications for radionuclide migration elsewhere at the Nevada Test Site.

Hydrologic Resources Management Program FY 1996 Progress Report

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Languages : en
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This report presents the results of FY 1996 technical studies conducted by the Lawrence Livermore National Laboratory (LLNL) as part of the Hydrology and Radionuclide Migration Program (HRMP). The HRMP is sponsored by the U.S. Department of Energy, Nevada Operations Office (DOE/NV) to address the environmental consequences of nuclear weapons testing at the Nevada Test Site (NTS). A priority for the LLNL program is to better characterize the complex near-field environment in order to assess and predict the movement of radionuclides in groundwater. Other participating organizations include the Los Alamos National Laboratory (LANL), the U.S. Geological Survey (USGS), the United States Environmental Protection Agency (EPA), the Desert Research Institute (DRI) of the University of Nevada, and Bechtel-Nevada. Our FY96 report includes a description of a field program to sample surface and groundwaters along a regional flow path including known recharge and discharge centers off the NTS. This work extends the sampling program described in our FY95 report to secure U.S. Air Force and U.S. Department of Energy lands including the Nellis Air Force Bombing and Gunnery Range and the Tonopah Test Range. We compile fluid data collected from or adjacent to saturated nuclear test cavities (''hot'' wells) including fluids collected from the CHESHIRE (U-20n) and ALMENDRO (U-19V) event cavities. This compilation also includes revised data originally published in our FY95 report which was in error. We report on a collaboration with LANL to investigate the occurrence of gamma emitting radionuclides detected during drilling in the bottom of the subsidence crater produced by the 1962 HYRAX (U-3bh) event. This work provided a unique opportunity to investigate the transport of volatile radionuclides in the unsaturated zone. Finally, through our participation in the Underground Test Area Operable Unit, we provide initial results of a collaborative study with LANL to investigate the colloidal transport of radionuclides downgradient from a saturated nuclear test cavity. LLNL-HRMP technical studies emphasize measurement of the occurrence, distribution, release, and transport of radionuclides away from underground nuclear test centers. We rely heavily on LLNL's expertise in science based stockpile stewardship, nuclear weapons testing, radiochemical diagnostics, nuclear test phenomenology, mass spectrometry, aqueous geochemistry and field and laboratory studies of radionuclide migration to these ends. In the face of steep reductions in the HRMP budget, LLNL will continue to collaborate with other program participants in near-field radiochemical and regional isotope hydrology studies.

Open-file Report

Author:
Publisher:
ISBN:
Category : Geological surveys
Languages : en
Pages : 72

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Laboratory and Field Studies Related to the Hydrologic Resources Management Program. Progress Report, October 1, 1995--September 30, 1996

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 31

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Book Description
This report describes the work done at Los Alamos National Laboratory in FY 1996 for the Hydrologic Resources Management Program funded by the US Department of Energy/Nevada Operations Office. Despite declining financial support we have been able to maintain a significant analytical effort because the Underground Test Area Operable Unit at the Nevada Test Site has drilled several wells adjacent to cavities produced by nuclear tests. We measured the radionuclide content in groundwater samples and rock cores taken from near cavities at two sites on Pahute Mesa. At one of these sites we detected plutonium in the groundwater in significant concentrations. Also we detected 137Cs deposition in soils high in a collapsed chimney above the working point at a location in the Low Level Waste Management facility in Area 3 of the Nevada Test Site. We analyzed samples from four wells suspected or known to contain radionuclides. Sampling efforts in wells completed with small-bore tubing or casing continue to be hampered by our inability to adequately purge the well prior to sampling. We presented our work at a number of meetings and published several review articles.

Energy and Water Development Appropriations for 1995: Appalachian Regional Commission

Author: United States. Congress. House. Committee on Appropriations. Subcommittee on Energy and Water Development
Publisher:
ISBN:
Category : Energy development
Languages : en
Pages : 990

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