AN INNOVATIVE APPROACH FOR CONSTRUCTING AN IN-SITU BARRIER FOR STRONTIUM-90 AT THE HANFORD SITE WASHINGTON Metadata

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Title

  • Main Title AN INNOVATIVE APPROACH FOR CONSTRUCTING AN IN-SITU BARRIER FOR STRONTIUM-90 AT THE HANFORD SITE WASHINGTON

Creator

  • Author: RJ, FABRE
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy. Office of Environmental Management.
    Contributor Type: Organization
    Contributor Info: USDOE Assistant Secretary for Environmental Management (EM)

Publisher

  • Name: Hanford Site (Wash.)
    Place of Publication: Richland, Washington
    Additional Info: Hanford Site (HNF), Richland, WA

Date

  • Creation: 2008-12-08

Language

  • English

Description

  • Content Description: Efforts to reduce the flux of Sr-90 to the Columbia River from Hanford Site 100-N Area past-practice liquid waste disposal sites have been underway since the early 1990s. Termination of all liquid discharges to the ground in 1993 was a major step toward meeting this goal. However, Sr-90 adsorbed on aquifer solids beneath liquid waste disposal sites and extending beneath the near-shore riverbed remains a continuing contaminant source to groundwater and the Columbia River. The initial pump-and-treat system proved to be ineffective as a long-term solution because of the geochemical characteristics of Sr-90. Following an evaluation of potential Sr-90 treatment technologies and their applicability under 100-NR-2 Operable Unit hydrogeologic conditions, the U.S. Department of Energy and the Washington State Department of Ecology agreed to evaluate apatite sequestration as the primary remedial technology, combined with a secondary polishing step utilizing phytoextraction if necessary. Aqueous injection was initiated in July 2005 to assess the efficacy of in-situ apatite along the 100 m of shoreline where Sr-90 concentrations are highest. The remedial technology is being developed by Pacific Northwest National Laboratory. CH2M Hill Plateau Remediation Company is implementing this technology in the field with support from PNNL.

Subject

  • Keyword: Columbia River
  • Keyword: Waste Management
  • Keyword: Liquid Wastes
  • Keyword: Strontium 90
  • Keyword: Ecology
  • Keyword: Washington
  • STI Subject Categories: 58 Geosciences
  • STI Subject Categories: 54 Environmental Sciences
  • Keyword: Polishing
  • Keyword: Evaluation
  • Keyword: Apatites
  • Keyword: Aquifers

Source

  • Conference: WASTE MANAGEMENT SYMPOSIA (WM09) 03/01/2009 THRU 03/05/2009 PHOENIX AZ ABSTRACT NUMBER 9325 TOPIC 7.2

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Report No.: CHPRC-00067-FP Rev 0
  • Grant Number: DE-AC06-08RL14788
  • Office of Scientific & Technical Information Report Number: 944152
  • Archival Resource Key: ark:/67531/metadc897012
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