Theme 3

Theme 3 - Remediation Technologies

1) In situ Technologies for Remediation of Contaminant Source Zones

Development of improved versions and / or understanding of CHEMOX, in situ biothermal technologies, improved understanding of the role of geologic heterogeneity and contaminant mass distribution in low-permeability zones as impediments governing performance of source zone remediation technologies ; development of improved design models for remedial systems and predicting remediation outcomes.

2) In situ Technologies for Remediation of Contaminant Plumes

It is commonly assumed that, once the source zones are fully remediated or isolated, the plumes can then be easily remediated, however, several impediments exist; Therefore this thrust involves development of improved technologies for understanding the impediments governing plume remediation with emphasis on elucidating influences of geologic complexities (heterogeneities) and contaminant mass residing in low-permeability zones such as back diffusion effects.

3) Assessment / Prediction of Remediation Outcomes

Thousands of contaminated sites have been / are being subjected to in situ remediation technologies. Few sites have been sufficiently monitored during and after to assess and understand outcomes. Development of improved remediation monitoring methods and numerical models for understanding and predicting remediation outcomes for source zones and plumes and effective selections and applications of remediation technologies; improve strategies for selecting technologies commensurate with the site-specific complexities; prediction of remediation time scales for non-ideal conditions, building realistic, science-based expectations.