Potential Errors in Selecting Regions for a Focused Soils Remediation

Overview

Background

Setting

Setting, Illustrated

Possible Remediation Criteria

Remediation Criteria, Illustrated

Estimation Bias

Critique of the Criteria

Computing the Bias

Computing the Bias, Continued

Examples

Example: Lognormal Distribution

f(z,s)

Case Study--Metal Slag in Soils

Nickel Slag

Surface Sampling Results

Results by Sample Event

Entire Site

What the Laboratory Data Say

What the Field Sampler Says

Case Study Lessons

Conclusions

Conclusions

Conclusions, Continued