This Hot Topic offers a remedy selection framework to help project managers evaluate remedial technologies and develop remedial alternatives (often composed of multiple technologies) based on site-specific data. General categories of contaminated sediment remedial technologies include monitored natural recovery (MNR) and enhanced monitored natural recovery (EMNR); in situ treatment; capping (conventional and amended); and removal (dredging and excavation)… Continue reading
In order to reduce potential risks to human health and the environment dredging or excavation remedies for contaminated sediment are the primary means of remediation. Removal of contaminated sediment is generally effective for source control but can be less effective for overall risk reduction if not done properly because of the potential … Continue reading
Table 1. Summary of Site Characterization Needs for Contaminated Sediment Data Type Potential Site characterization Approach Implication for remedy selection Tools involved Physical characteristic Sediment stability Require to perform tests including bathymetric survey, grain size analysis, bed pins, scour chains, geochronology cores. Stable sediments require less erosion protection for capping options, conductive to monitored natural … Continue reading
