Provides a comprehensive discussion on chemical oxidants and outlines the requirements of in situ chemical oxidation.

Overview of the regulatory issues with aggressive in situ technologies that target dense nonaqueous phase liquid source zones for elimination or substantial reduction.

Includes descriptions of three commonly used chemical oxidants and eight case studies, as well as four examples of state regulatory applications of in situ oxidation.

Review of three general types of emerging dense nonaqueous phase liquid characterization technologies (including geophysical, cone penetrometer, and in situ tracers) and two categories of emerging remediation technologies (thermal enhanced extraction and in situ chemical oxidation).