Improved Management/Remediation of Legacy Contaminated Sites through High-Resolution Characterization
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The National Aeronautics and Space Administration (NASA), along with their Remediation Program Consultants, has developed and implemented a high-resolution data collection strategy at multiple legacy chlorinated volatile organic compound (CVOC)contaminated sites at the Kennedy Space Center (KSC), Florida.

High-resolution characterization of contaminated sites is performed with direct push technology (DPT)soil and/or groundwater sampling techniques and mobile laboratory analysis of the samples collected to efficiently provide a high level of characterization detail. The groundwater sampling results are then presented using a three-dimensional (3D) Environmental Visualization Software (EVS) model to produce a robust conceptual site model (CSM). In contrast to historical contaminant plume assessment techniques, high-resolution characterization has proven to be an effective approach for the effective management and remediation of legacy contaminated sites at KSC, resulting in: (i) more refined cleanup cost estimates and timeframes, (ii) a mechanism for improved management decisions with regards to budgeting of estimated capital and annual expenditures for cleanup, (iii) more effective feasibility study evaluations and selection of appropriate remedial technologies, (iv) more focused source remediation approaches, and (v) shorter overall anticipated timeframes for active remediation phases of projects. This presentation will focus on Geosyntec case study project sites which will demonstrate how the high-resolution characterization approach implemented at KSC has achieved the identified outcomes. The presented case studies will demonstrate the magnitude of the data collection and EVS presentation efforts at KSC, in addition to the differences in CSM development when comparing high-resolution characterization to traditional methods. The case studies will also demonstrate that while meeting regulatory delineation requirements is important, remedial success and costs ultimately depend on developing an accurate CSM.

Publication Summary

  • Geosyntec Authors: Jim Langenbach, Rebecca C. Daprato
  • All Authors: Jim Langenbach, Rebecca Daprato, Michael Deliz, Harry Plaza
  • Title: Improved Management/Remediation of Legacy Contaminated Sites through High-Resolution Characterization
  • Event or Publication: 8th International Association of Hydrological Sciences Groundwater Quality Conference
  • Practice Areas: Groundwater Assessment and Remediation, Site Investigation and Remediation
  • Date: 2013
  • Location: Gainesville, Florida