Tritium monitoring in groundwater and evaluation of model predictions for the Hanford Site 200 Area Effluent Treatment Facility

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Description

The Effluent Treatment Facility (ETF) disposal site, also known as the State-Approved Land Disposal Site (SALDS), receives treated effluent containing tritium, which is allowed to infiltrate through the soil column to the water table. Tritium was first detected in groundwater monitoring wells around the facility in July 1996. The SALDS groundwater monitoring plan requires revision of a predictive groundwater model and reevaluation of the monitoring well network one year from the first detection of tritium in groundwater. This document is written primarily to satisfy these requirements and to report on analytical results for tritium in the SALDS groundwater monitoring network ... continued below

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92 p.

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Barnett, D.B.; Bergeron, M.P.; Cole, C.R.; Freshley, M.D. & Wurstner, S.K. August 1, 1997.

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Description

The Effluent Treatment Facility (ETF) disposal site, also known as the State-Approved Land Disposal Site (SALDS), receives treated effluent containing tritium, which is allowed to infiltrate through the soil column to the water table. Tritium was first detected in groundwater monitoring wells around the facility in July 1996. The SALDS groundwater monitoring plan requires revision of a predictive groundwater model and reevaluation of the monitoring well network one year from the first detection of tritium in groundwater. This document is written primarily to satisfy these requirements and to report on analytical results for tritium in the SALDS groundwater monitoring network through April 1997. The document also recommends an approach to continued groundwater monitoring for tritium at the SALDS. Comparison of numerical groundwater models applied over the last several years indicate that earlier predictions, which show tritium from the SALDS approaching the Columbia River, were too simplified or overly robust in source assumptions. The most recent modeling indicates that concentrations of tritium above 500 pCi/L will extend, at most, no further than {approximately}1.5 km from the facility, using the most reasonable projections of ETF operation. This extent encompasses only the wells in the current SALDS tritium-tracking network.

Physical Description

92 p.

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INIS; OSTI as DE97054311

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  • Other Information: PBD: Aug 1997

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  • Other: DE97054311
  • Report No.: PNNL--11665
  • Grant Number: AC06-76RL01830
  • DOI: 10.2172/554804 | External Link
  • Office of Scientific & Technical Information Report Number: 554804
  • Archival Resource Key: ark:/67531/metadc696912

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Office of Scientific & Technical Information Technical Reports

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  • August 1, 1997

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • May 16, 2016, 6:09 p.m.

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Barnett, D.B.; Bergeron, M.P.; Cole, C.R.; Freshley, M.D. & Wurstner, S.K. Tritium monitoring in groundwater and evaluation of model predictions for the Hanford Site 200 Area Effluent Treatment Facility, report, August 1, 1997; Richland, Washington. (digital.library.unt.edu/ark:/67531/metadc696912/: accessed November 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.