A GRADED APPROACH TO FLOW AND TRANSPORT MODELING TO SUPPORT DECOMMISSIONING ACTIVITIES AT THE SAVANNAH RIVER SITE, AIKEN SC

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A graded approach to flow and transport modeling has been used as a cost effective solution to evaluating potential groundwater risk in support of Deactivation and Decommissioning activities at the United States Department of Energy's Savannah River Site. This approach incorporates both simple spreadsheet calculations and complex numerical modeling to evaluate the threat to human health posed by contaminants leaching from decommissioned concrete building slabs. Simple spread sheet calculations were used to produce generic slab concentration limits for a suite of radiological and non-radiological contaminants for a chemical separations area at Savannah River Site. These limits, which are based upon ... continued below

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Dixon, K; Patricia Lee, P & Gregory Flach, G June 7, 2007.

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A graded approach to flow and transport modeling has been used as a cost effective solution to evaluating potential groundwater risk in support of Deactivation and Decommissioning activities at the United States Department of Energy's Savannah River Site. This approach incorporates both simple spreadsheet calculations and complex numerical modeling to evaluate the threat to human health posed by contaminants leaching from decommissioned concrete building slabs. Simple spread sheet calculations were used to produce generic slab concentration limits for a suite of radiological and non-radiological contaminants for a chemical separations area at Savannah River Site. These limits, which are based upon the United States Environmental Protection Agency Soil Screening guidance, were used to eliminate most building slabs from further risk assessment. Of the more than 58 facilities located in the area, to date only one slab has been found to have a contaminant concentration in excess of the area specific slab limit. For this slab, a more rigorous numerical modeling effort was undertaken reducing the conservatisms inherent in the spreadsheet calculations. Using the more sophisticated numerical model, it was possible to show that the remaining contaminant of concern would not likely impact groundwater above drinking water standards.

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  • Journal Name: Operational Radiation Safety A Publication Of The Health Physics Society

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  • Report No.: WSRC-MS-2007-00117
  • Grant Number: DE-AC09-96SR18500
  • Office of Scientific & Technical Information Report Number: 908932
  • Archival Resource Key: ark:/67531/metadc878097

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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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  • June 7, 2007

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  • Sept. 22, 2016, 2:13 a.m.

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  • Nov. 2, 2016, 4:13 p.m.

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Dixon, K; Patricia Lee, P & Gregory Flach, G. A GRADED APPROACH TO FLOW AND TRANSPORT MODELING TO SUPPORT DECOMMISSIONING ACTIVITIES AT THE SAVANNAH RIVER SITE, AIKEN SC, article, June 7, 2007; [Aiken, South Carolina]. (digital.library.unt.edu/ark:/67531/metadc878097/: accessed October 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.