Evaluation of subsurface modeling application at CERCLA/RCRA sites

Sang B. Lee, Varadhan Ravi, Joseph R. Williams, David S. Burden

Research output: Contribution to journalReview articlepeer-review

Abstract

Commonly observed aspects of ground-water model misuse are explored by reviewing twenty model application reports for CERCLA and RCRA sites. The observed aspects of misuse were categorized as: inadequate understanding of (1) the governing differential equations and the associated boundary and initial conditions, (2) conceptualization, (3) input parameter estimation and model calibration, (4) sensitivity and uncertainty analysis, (5) model selection and inherent model limitations, and (6) interpretation of modeling results. Among these identified categories, uncertainty in input parameter value estimation and insufficient sensitivity analysis were observed most frequently. The study results show a greater need for enhanced and continuing education in ground-water model application. It is recommended that stricter guidelines for quality control and quality assurance program for model application be developed. In addition, dissemination of the existing model guidelines should also be enhanced.

Original languageEnglish (US)
Pages (from-to)3-13
Number of pages11
JournalASTM Special Technical Publication
Volume1288
StatePublished - Jan 1 1996
Externally publishedYes

Keywords

  • Boundary condition
  • CERCLA/RCRA
  • Conceptualization
  • Contaminant transport
  • Ground water
  • Model application
  • Model evaluation
  • Model misuse

ASJC Scopus subject areas

  • Engineering(all)

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