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Assessment of the Performance of Engineered Waste Containment Barriers (2007) / Chapter Skim
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Summary
Pages 1-4

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From page 1...
... Barriers are made of This report focuses on engineered barriers designed to natural (e.g., soil, clay) and/or synthetic materials, such as contain municipal solid waste, other nonhazardous solid polymeric materials (e.g., geomembranes, geosynthetic clay and liquid waste, hazardous and toxic wastes, and low-level liners)
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From page 2...
... Liquids collected in the leak detection layer sandwiched Geomembranes installed following strict construction between the primary and secondary (bottom) liners provide quality assurance protocols exhibit significantly fewer leaks a direct assessment of the performance of the primary liner and perform better than those installed without such requiresystem.
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From page 3...
... Installation damage and containment barriers have not been monitored sufficiently inadequate capacity degrade their short-term performance, to draw conclusions about their field performance or the and clogging caused by soil infiltration, soil and geosynthet- accuracy of predictions of the transport of contaminants ics penetration, creep of the geonet core, biological activity, through them. and mineral precipitation degrade their medium- and longterm performance.
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From page 4...
... should engineered barrier systems should commission and fund support the validation, calibration, and improvement assessments of performance on a regular basis. given of models to predict the behavior of containment the rate at which performance data and knowledge of system components and the composite system over long waste behavior, contaminant transport, and monitoring periods of time.
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Key Terms

  • engineered barrier
  • clay liners
  • geosynthetic clay
  • engineered barriers
  • compacted clay

  • engineered waste
  • containment barriers
  • construction quality
  • barrier components
  • drainage layers

  • clay layers
  • composite liners
  • barrier performance
  • evapotranspirative barriers
  • field performance

  • leachate head
  • soil infiltration
  • granular drainage
  • defective materials
  • biological activity

  • identify engineered
  • vertical waste
  • liners provide
  • vertical barriers
  • subsurface waste

  • liners constructed
  • composite barriers
  • individual geosynthetic
  • geosynthetic drainage
  • specific barrier


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