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Development of a three-dimensional groundwater flow model for Western Melton Valley: Application of P-FEM on a DOE waste site

Description: Modeling the movement of hazardous waste in groundwater was identified by the US Department of Energy (DOE) as one of the grand challenges in scientific computation. In recognition of this need, DOE has provided support for a group of scientists from several national laboratories and universities to conduct research and development in groundwater flow and contaminant transport modeling. This group is part of a larger consortium of researchers, collectively referred to as the Partnership in Comp… more
Date: April 1, 1994
Creator: West, O. R. & Toran, L. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Supplement to a hydrologic framework for the Oak Ridge Reservation, Oak Ridge, Tennessee. Summary of groundwater modeling

Description: The information in this report should prove useful for flow and contaminant-transport modeling of groundwater and for evaluating the alternatives for remedial action. New data on porosity and permeability have been analyzed and interpreted to produce a better understanding of the relationships between unfractured rock, low permeability intervals, and relatively permeable intervals. Specifically, the dimensions, orientations, depths, and spacings of pervious fractures have been measured or calcu… more
Date: November 1, 1992
Creator: Moore, G. K. & Toran, L. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Modeling of radionuclide and heavy metal sorption around low and high pH waste disposal sites at Oak Ridge, Tennessee: Classification review package

Description: Modeling of mineral precipitation and metal sorption reactions using MINTEQA2 and the iron oxyhydroxide diffuse-layer model has provided insights into geochemical processes governing contaminant migration from low-level radioactive waste disposal sites at the US Department of Energy`s Oak Ridge National Laboratory and Y-12 Plant at Oak Ridge, Tennessee. Both acidic and basic nuclear-fuel reprocessing wastes, locally mixed with decontamination solvents, were disposed of in unlined trenches and l… more
Date: October 1, 1994
Creator: Saunders, J.A. & Toran, L.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

An economic decision framework using modeling for improving aquifer remediation design

Description: Reducing cost is a critical challenge facing environmental remediation today. One of the most effective ways of reducing costs is to improve decision-making. This can range from choosing more cost- effective remediation alternatives (for example, determining whether a groundwater contamination plume should be remediated or not) to improving data collection (for example, determining when data collection should stoop). Uncertainty in site conditions presents a major challenge for effective decisi… more
Date: November 1, 1995
Creator: James, B. R.; Gwo, J. P. & Toran, L. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Variable-density flow and transport modeling to evaluate anomalous nitrate concentrations and pressures in GW-134

Description: The U.S. Department of Energy operates the Oak Ridge Reservation near Oak Ridge, Tennessee. Four waste disposal ponds, referred to as the S-3 ponds, were located within this reservation near the western edge of the Y-12 Plant. The S-3 ponds were constructed in 1951 and received liquid waste until 1983. The main component of the waste received by the ponds was nitric acid. In 1988, the ponds were structurally stabilized and capped and the area above the ponds was converted into an asphalt parkin… more
Date: June 1, 1996
Creator: Jones, T. L.; Toran, L. E. & Watson, D. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The potential for criticality following disposal of uranium at low-level waste facilities: Uranium blended with soil

Description: The purpose of this study was to evaluate whether or not fissile uranium in low-level-waste (LLW) facilities can be concentrated by hydrogeochemical processes to permit nuclear criticality. A team of experts in hydrology, geology, geochemistry, soil chemistry, and criticality safety was formed to develop achievable scenarios for hydrogeochemical increases in concentration of special nuclear material (SNM), and to use these scenarios to aid in evaluating the potential for nuclear criticality. Th… more
Date: June 1, 1997
Creator: Toran, L. E.; Hopper, C. M. & Naney, M. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Status report: A hydrologic framework for the Oak Ridge Reservation

Description: This first status report on the Hydrologic Studies Task of the Oak Ridge Reservation Hydrology and Geology Study (ORRHAGS) revises earlier concepts of subsurface hydrology and hydrogeochemistry of the ORR. A new classification of hydrogeologic units is given, as well as new interpretations of the gydrogeologic properties and processes that influence contaminant migration. The conceptual hydrologic framework introduced in this report is based primarily on reinterpretations of data acquired durin… more
Date: May 1, 1992
Creator: Solomon, D. K.; Toran, L. E.; Dreier, R. B.; Moore, G. K. & McMaster, W. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Status report: A hydrologic framework for the Oak Ridge Reservation

Description: This first status report on the Hydrologic Studies Task of the Oak Ridge Reservation Hydrology and Geology Study (ORRHAGS) revises earlier concepts of subsurface hydrology and hydrogeochemistry of the ORR. A new classification of hydrogeologic units is given, as well as new interpretations of the gydrogeologic properties and processes that influence contaminant migration. The conceptual hydrologic framework introduced in this report is based primarily on reinterpretations of data acquired durin… more
Date: May 1, 1992
Creator: Solomon, D. K.; Toran, L. E.; Dreier, R. B.; Moore, G. K. & McMaster, W. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Supplement to a hydrologic framework for the Oak Ridge Reservation, Oak Ridge, Tennessee

Description: The information in this report should prove useful for flow and contaminant-transport modeling of groundwater and for evaluating the alternatives for remedial action. New data on porosity and permeability have been analyzed and interpreted to produce a better understanding of the relationships between unfractured rock, low permeability intervals, and relatively permeable intervals. Specifically, the dimensions, orientations, depths, and spacings of pervious fractures have been measured or calcu… more
Date: November 1, 1992
Creator: Moore, G.K. (Tennessee Univ., Knoxville, TN (United States). Dept. of Civil Engineering) & Toran, L.E. (Oak Ridge National Lab., TN (United States))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Design of a field experiment for injection of natural colloids in a sandy coastal plain aquifer, Belle W. Baruch Forest Science Institute, Georgetown, South Carolina

Description: This report summarizes the design of field injection experiments that constitute one task in the larger project described in the report Experiments Using Natural Organics.'' In the experiment, we plan to inject a large volume of colloidal organic matter (COM) into a sandy, unconsolidated coastal aquifer and observe the migration of COM into the groundwater flow system. The report provides a brief overview of the research project, including hypotheses to be tested; describes the purpose of the f… more
Date: June 1, 1990
Creator: Toran, L.E.; McCarthy, J.F. (Oak Ridge National Lab., TN (USA)) & Williams, T.M. (Clemson Univ., Georgetown, SC (USA). Belle W. Baruch Forest Science Inst.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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