05:21
Paths of Pollution: Cleaning Up the Fox River
The potentially responsible parties for the discharge of PCBs into the Fox River-the companies along the Fox River-propose the natural attenuation method of remediation. EPA does not consider this natural burial of the contaminated sediments a perma...
04:25
Paths of Pollution: Great Lakes: Remediation Methods
The three main methods of remediation are hydraulic dredging, natural attenuation, and capping the contaminated sediments with a layer of clay or sand. Dredging is the preferred method because of its permanency. The contaminated sediments go through...