Provides guidance for regulators, industry, consultants, and technology vendors in understanding, evaluating, and making informed decisions about the use of constructed treatment wetland systems.

A guide for regulators, stakeholders, and others involved in oversight of historical records review projects on munitions response sites.

A primer discussing scientific approaches and strategies used to characterize sites known or suspected to be contaminated with DNAPLs.

A technical and regulatory guide for those involved in selecting and implementing surfactant/cosolvent flushing of DNAPLs as a remedial action.

Presents examples of flexibility used in regulatory frameworks for approving alternative landfill cover designs, current research information about the use of alternative covers, and examples of approved designs and constructed covers.

Assists practitioners in formulating a proper strategy for removing the threat that metal, particularly lead, presents at closed small arms firing ranges.

Provides guidance for the systematic characterization, evaluation, and appropriate design and testing of ISB for any biotreatable contaminant.

Description of some aggressive in situ technologies that target DNAPL source zones for elimination or substantial reduction to achieve more rapid remediation and speedier site closure.

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

A jointly developed protocol for determining when, where, and how to use diffusion samplers for groundwater sampling.