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Modeling of hydrologic conditions and solute movement in processed oil shale waste embankments under simulated climatic conditions. Final report, November 1995

Description: A study is described on the hydrological and geotechnical behavior of an oil shale solid waste. The objective was to obtain information which can be used to assess the environmental impacts of oil shale solid waste disposal in the Green River Basin. The spent shale used in this study was combusted by the Lurgi-Ruhrgas process by Rio Blanco Oil Shale Company, Inc. Laboratory bench-scale testing included index properties, such as grain size distribution and Atterberg limits, and tests for enginee… more
Date: December 31, 1995
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Actinide immobilization in the subsurface environment by in-situ treatment with a hydrolytically unstable organophosphorus complexant: Uranyl uptake by calcium phytate

Description: In addition to naturally occurring uranium and thorium, actinide ions exist in the subsurface environment as a result of accidental releases and intentional disposal practices associated with nuclear weapons production. These species present a significant challenge to cost-effective remediation of contaminated environments. An attractive approach to decreasing the probability of actinide migration in the subsurface is to transform the ions into a less mobile form by remote treatment. We have un… more
Date: December 31, 1997
Creator: Nash, K. L.; Jensen, M. P. & Schmidt, M. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Compliance with the Nevada Test Site`s waste acceptance criteria for vitrified cesium-loaded crystalline silicotitanate (CST)

Description: Oak Ridge National Laboratory (ORNL) and Savannah River Technology Center (SRTC) are involved in a joint project for immobilization of radionuclides from the Melton Valley Storage Tanks (MVST) at Oak Ridge (OR). The supernate from Tank W-29 of the MVST will be treated by passage through a crystalline silicotitanate (CST) ion exchange medium. The CST was designed to sorb cesium, the primary radio nuclide (Cs-137) in the supernate of MVST`s. A smaller amount of strontium (Sr-90) will also be sorb… more
Date: December 31, 1997
Creator: Harbour, J.R. & Andrews, M.K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Successful remediation of four uranium calibration pits at Technical Area II, Sandia National Laboratories, Albuquerque, New Mexico, USA

Description: The first remediation of an Environmental Restoration (ER) Project site at Sandia National Laboratories (SNL) was successfully conducted in May and June 1994 at Technical Area II. The removal action involved four Uranium Calibration Pits (UCPs) filled with radioactive or hazardous materials. The concrete culvert pits were used to test and calibrate borehole radiometric logging tools for uranium exploration. The removal action consisted of excavating and containerizing the pit contents and conta… more
Date: December 31, 1994
Creator: Conway, R.; Wade, M.; Tharp, T. & Copland, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Characterization of waste streams and suspect waste from largest Los Alamos National Laboratory generators

Description: A detailed waste stream characterization of 4 primary generators of low level waste at LANL was performed to aid in waste minimization efforts. Data was compiled for these four generators from 1988 to the present for analyses. Prior waste minimization efforts have focused on identifying waste stream processes and performing source materials substitutions or reductions where applicable. In this historical survey, the generators surveyed included an accelerator facility, the plutonium facility, a… more
Date: December 31, 1995
Creator: Soukup, J.D. & Erpenbeck, G.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Unsaturated zone transport modeling of the Greater Confinement Disposal Site

Description: Unsaturated zone transport modeling is being conducted as part of the performance assessment of the Greater Confinement Disposal (GCD) facility which is located on the Nevada Test Site. This performance assessment is based on an iterative process of modeling and data collection to assess the likelihood the site will meet the US Environmental Protection Agency`s containment, individual protection and groundwater protection requirements for the disposal of transuranic wastes, high-level wastes an… more
Date: December 31, 1994
Creator: Brown, T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Defining modeling parameters for juniper trees assuming pleistocene-like conditions at the NTS

Description: This paper addresses part of Sandia National Laboratories` (SNL) efforts to assess the long-term performance of the Greater Confinement Disposal (GCD) facility located on the Nevada Test Site (NTS). Of issue is whether the GCD site complies with 40 CFR 191 standards set for transuranic (TRU) waste burial. SNL has developed a radionuclide transport model which can be used to assess TRU radionuclide movement away from the GCD facility. An earlier iteration of the model found that radionuclide upt… more
Date: December 31, 1994
Creator: Tarbox, S.R. & Cochran, J.R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Examination plan for the soils and low-level radioactive waste forms of the NRC field testing lysimeters

Description: The Field Lysimeter Investigations: Low-Level Waste Data Base Development Program is obtaining information on the performance of radioactive waste forms. These experiments were recently shut down and have been examined in accordance with a detailed waste form and soil sampling plan. Ion-exchange resins from a commercial nuclear power station were solidified into waste forms using portland cement and vinyl ester-styrene. These waste forms were tested to (a) obtain information on performance of w… more
Date: December 31, 1996
Creator: McConnell, J.W. Jr.; Rogers, R.D. & Jastrow, J.D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Groundwater Monitoring and Tritium-Tracking Plan for the 200 Area State-Approved Land Disposal Site

Description: The 200 Area State-Approved Land Disposal Site (SALDS) is a drainfield which receives treated wastewater, occasionally containing tritium from treatment of Hanford Site liquid wastes at the 200 Area Effluent Treatment Facility (ETF). Since operation of the SALDS began in December 1995, discharges of tritium have totaled {approx}304 Ci, only half of what was originally predicted for tritium quantity through 1999. Total discharge volumes ({approx}2.7E+8 L) have been commensurate with predicted vo… more
Date: August 31, 2000
Creator: Barnett, DB
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Land application uses for dry flue gas desulfurization by-products. Executive summary

Description: Flue gas desulfurization (FGD) scrubbing technologies create several types of by-products. This project focused primarily on by-product materials obtained from what are commonly called ''dry scrubbers'' which produce a dry, solid material consisting of excess sorbent, reaction product that contains sulfate and sulfite, and coal fly ash. Prior to this project, dry FGD by-products were generally treated as solid wastes and disposed in landfills. However, landfill sites are becoming scarce and tip… more
Date: January 31, 1999
Creator: Dick, W.; Bigham, J.; Forster, R.; Hitzhusen, F.; Lal, R.; Stehouwer, R. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Land Application Uses for Dry Flue Gas Desulfurization By-Products: Phase 3

Description: New flue gas desulfurization (FGD) scrubbing technologies create a dry, solid by-product material consisting of excess sorbent, reaction product that contains sulfate and sulfite, and coal fly ash. Generally, dry FGD by-products are treated as solid wastes and disposed in landfills. However, landfill sites are becoming scarce and tipping fees are constantly increasing. Provided the environmental impacts are socially and scientifically acceptable, beneficial uses via recycling can provide econom… more
Date: January 31, 1999
Creator: Dick, W.; Bigham, J.; Forster, R.; Hitzhusen, F.; Lal, R.; Stehouwer, R. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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