Simulation of contaminated sediment transport in White Oak Creek basin

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This paper presents a systematic approach to management of the contaminated sediments in the White Oak Creek watershed at Oak Ridge National Laboratory near Oak Ridge, Tennessee. The primary contaminant of concern is radioactive cesium-137 ({sup 137}Cs), which binds to soil and sediment particles. The key components in the approach include an intensive sampling and monitoring system for flood events; modeling of hydrological processes, sediment transport, and contaminant flux movement; and a decision framework with a detailed human health risk analysis. Emphasis is placed on modeling of watershed rainfall-runoff and contaminated sediment transport during flooding periods using the Hydrologic Simulation ... continued below

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6 p.

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Bao, Y.; Clapp, R.B.; Brenkert, A.L.; Moore, T.D. & Fontaine, T.A. December 31, 1995.

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  • Bao, Y.
  • Clapp, R.B.
  • Brenkert, A.L. Oak Ridge National Lab., TN (United States)
  • Moore, T.D. Department of Civil and Environmental Engineering, University of Tennessee, Knoxville, TN (United States)
  • Fontaine, T.A. Department of Civil and Environmental Engineering, South Dakota School of Mines and Technology, Rapid City, SD (United States)

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Description

This paper presents a systematic approach to management of the contaminated sediments in the White Oak Creek watershed at Oak Ridge National Laboratory near Oak Ridge, Tennessee. The primary contaminant of concern is radioactive cesium-137 ({sup 137}Cs), which binds to soil and sediment particles. The key components in the approach include an intensive sampling and monitoring system for flood events; modeling of hydrological processes, sediment transport, and contaminant flux movement; and a decision framework with a detailed human health risk analysis. Emphasis is placed on modeling of watershed rainfall-runoff and contaminated sediment transport during flooding periods using the Hydrologic Simulation Program- Fortran (HSPF) model. Because a large number of parameters are required in HSPF modeling, the major effort in the modeling process is the calibration of model parameters to make simulation results and measured values agree as closely as possible. An optimization model incorporating the concepts of an expert system was developed to improve calibration results and efficiency. Over a five-year simulation period, the simulated flows match the observed values well. Simulated total amount of sediment loads at various locations during storms match with the observed values within a factor of 1.5. Simulated annual releases of {sup 137}Cs off-site locations match the data within a factor of 2 for the five-year period. The comprehensive modeling approach can provide a valuable tool for decision makers to quantitatively analyze sediment erosion, deposition, and transport; exposure risk related to radionuclides in contaminated sediment; and various management strategies.

Physical Description

6 p.

Notes

INIS; OSTI as DE96005472

Source

  • 6. federal interagency sedimentation conference, Las Vegas, NV (United States), 10-14 Mar 1996

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  • Other: DE96005472
  • Report No.: CONF-9603120--1
  • Grant Number: AC05-84OR21400
  • Office of Scientific & Technical Information Report Number: 205844
  • Archival Resource Key: ark:/67531/metadc666944

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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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Creation Date

  • December 31, 1995

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

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  • June 24, 2016, 1:39 p.m.

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Bao, Y.; Clapp, R.B.; Brenkert, A.L.; Moore, T.D. & Fontaine, T.A. Simulation of contaminated sediment transport in White Oak Creek basin, article, December 31, 1995; Tennessee. (digital.library.unt.edu/ark:/67531/metadc666944/: accessed December 15, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.