How to Deal with Uncertainty?

• Keep questions consistent with framework

• Compare remediation to natural attenuation

  • Evaluate time to targets (most uncertainty)
  • Assess relative benefits of intervention compared to natural attenuation (least uncertainty)

• Relative comparisons limit uncertainty due to:

  • Prediction error (in model calibration or formulation)
  • Assumed environmental conditions (flow, temperature, wind, sediment load, contaminant loads)

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