2.3. Dredging

Try these first

1. 1.

   What is dredging?

   Hint

   Think about how we clean up sediments to manage pollution.

2. 2.

   What does in-situ capping involve?

   Hint

   It’s a method to reduce exposure to pollutants.

3. 3.

   What is one major issue with dredging?

   • A) It eliminates all contamination
   • B) It can cause contaminant release
   • C) It's always less expensive

   Hint

   Think about what happens when you disturb sediment.

4. 4.

   In-situ capping involves covering contaminants with clean material.

   • True
   • False

   Hint

   Consider the method’s purpose.

5. 5.

   Given a scenario where a commercial dredging operation is underway in a contaminated bay, outline the steps you would take to minimize environmental impact.

   Hint

   Consider both physical barriers and methods for dredging.

6. 6.

   Evaluate the effectiveness of monitored natural recovery in a particular contaminated site based on sediment sampling data. What factors would you include in your assessment?

   Hint

   Evaluate not just the data but the broader environmental context.