Guidance to develop a structured approach for managing sites contaminated with chlorinated solvents and dense nonaqueous-phase liquids.

A technical guidance document, fact sheets, and six-part modular training course that summarize the latest science and emerging technologies for 1,4-Dioxane.

Provides tools for selecting and applying appropriate approaches for integrated site characterization and remediation at sites contaminated with dense nonaqueous phase liquids (DNAPLs).

Guidance to help site managers develop and adapt integrated strategies for understanding, treating, monitoring, and evaluating complex DNAPL-contaminated sites.

Guidance to evaluate, design, construct, monitor, and maintain permeable reactive barriers (PRBs) used as treatment zones to clean up contaminated groundwater.

Provides direction to regulators and practitioners on integrating EA into remedial decision making for a smooth transition between aggressive remediation and monitored natural attenuation. The CD also contains the Enhanced Attenuation of Chlorinated Organics: Electronic Resource Guide.

Provides updated information on new developments and innovative approaches in applying PRBs to treat a variety of groundwater contaminants.

Review of regulatory issues associated with PRBs.

Description of practices to be used to recognize and evaluate the presence of natural attenuation of chlorinated solvent contamination.

Presents a summary of results of surveys returned by people who took the natural attenuation course.