Refinement of the Kansas City Plant site conceptual model with respect to dense non-aqueous phase liquids (DNAPL)

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This document presents a refinement of the site conceptual model with respect to dense non-aqueous phase liquid (DNAPL) at the US Department of Energy Kansas City Plant (KCP). This refinement was prompted by a review of the literature and the results of a limited study that was conducted to evaluate whether pools of DNAPL were present in contaminated locations at the KCP. The field study relied on the micropurge method of sample collection. This method has been demonstrated as a successful approach for obtaining discrete samples within a limited aquifer zone. Samples were collected at five locations across 5-ft well ... continued below

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45 p.

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Korte, N.E.; Hall, S.C. & Baker, J.L. October 1, 1995.

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  • Korte, N.E.
  • Hall, S.C. Oak Ridge National Lab., TN (United States)
  • Baker, J.L. AlliedSignal Corp., Kansas City, MO (United States). Dept. of Environmental Protection

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Description

This document presents a refinement of the site conceptual model with respect to dense non-aqueous phase liquid (DNAPL) at the US Department of Energy Kansas City Plant (KCP). This refinement was prompted by a review of the literature and the results of a limited study that was conducted to evaluate whether pools of DNAPL were present in contaminated locations at the KCP. The field study relied on the micropurge method of sample collection. This method has been demonstrated as a successful approach for obtaining discrete samples within a limited aquifer zone. Samples were collected at five locations across 5-ft well screens located at the base of the alluvial aquifer at the KCP. The hypothesis was that if pools of DNAPL were present, the dissolved concentration would increase with depth. Four wells with highly contaminated groundwater were selected for the test. Three of the wells were located in areas where DNAPL was suspected, and one where no DNAPL was believed to be present. The results demonstrated no discernible pattern with depth for the four wells tested. A review of the data in light of the available technical literature suggests that the fine-grained nature of the aquifer materials precludes the formation of pools. Instead, DNAPL is trapped as discontinuous ganglia that are probably widespread throughout the aquifer. The discontinuous nature of the DNAPL distribution prevents the collection of groundwater samples with concentrations approaching saturation. Furthermore, the results indicate that attempts to remediate the aquifer with conventional approaches will not result in restoration to pristine conditions because the tortuous groundwater flow paths will inhibit the efficiency of fluid-flow-based treatments.

Physical Description

45 p.

Notes

INIS; OSTI as DE96000846

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  • Other Information: PBD: [1995]

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  • Other: DE96000846
  • Report No.: ORNL/TM--13003
  • Grant Number: AC05-84OR21400
  • DOI: 10.2172/117791 | External Link
  • Office of Scientific & Technical Information Report Number: 117791
  • Archival Resource Key: ark:/67531/metadc623704

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Creation Date

  • October 1, 1995

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • Jan. 22, 2016, 3:59 p.m.

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Korte, N.E.; Hall, S.C. & Baker, J.L. Refinement of the Kansas City Plant site conceptual model with respect to dense non-aqueous phase liquids (DNAPL), report, October 1, 1995; Tennessee. (digital.library.unt.edu/ark:/67531/metadc623704/: accessed September 24, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.