Passive In-Situ Containment or Treatment
- What is it?
- Enhanced biodegradation
- In-situ solidification
- Containment -- capping
- When is it appropriate?
- When removal may result in unacceptable or
increased risks
- When hydraulic and other water body conditions
are supportive
- When navigation dredging is not required
- What are the key assessment needs?
- Evaluation of effectiveness/engineering
feasibility of approach
- Evaluation of long-term contaminant fate
- Evaluation of armoring needed to maintain
stability of sediments during treatment
- Capping
- May be used alone as containment or in
combination with in-situ treatment to ensure containment during treatment
