Understanding the Relationships Among Low Level Metal Influx, Remediated Sediments, and Biological Receptors
Abstract
A challenge to all sediment remediation technologies is the continued influx of contaminants from uncontrolled sources. However, contaminants deposited on sediments remediated with chemically active sequestering agents (such as those in active caps) may be affected by the sequestering agents resulting in reduced impacts. We conducted mesocosm studies designed to evaluate the effectiveness of in situ remediation technologies (active and passive caps)subjected to continued low level, metal influxes (e.g., arsenic (As), cadmium (Cd), copper (Cu), zinc (Zn), and lead (Pb) from uncontrolled sources and better understand relationships among remediation methods, low level influxes of contaminants, bioturbation, and effects on biological receptors. Task 1 examined recontamination without bioturbation, Task 2 examined recontamination coupled with bioturbation, and Task 3 developed numerical models for assessing the longterm effectiveness of remedial methods based on results from Task 1.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 29, 2020
- Accession Number
- AD1134929
Entities
People
- Anna S. Knox
- John R. Wolfe
- Michael H. Paller
- Todd M. Redder
Organizations
- Savannah River National Laboratory