5.2. Factors Influencing Resuspension

Try these first

1. 1.

   Define resuspension.

   Hint

   Think about sediments that are disturbed.

2. 2.

   What does TSS stand for?

   Hint

   It's a measurement related to sediment in water.

3. 3.

   What is resuspension?

   • A sediment settling process
   • The stirring of settled sediments back into water
   • A water purification technique

   Hint

   Think about how settled materials can be disturbed in water.

4. 4.

   True or False: Turbulence decreases the chances of sediment resuspension.

   • True
   • False

   Hint

   Recall how water movement affects settled materials.

5. 5.

   If a lake has a certain amount of sediments at rest, describe what happens during a heavy rainfall. Include the implications for both water and sediment quality.

   Hint

   Consider how the dynamics of flow and sediment interaction are impacted.

6. 6.

   A wetland area experiences flooding. Calculate the increase in contaminant concentration if 500 kg with 80 mg/kg concentration is resuspended into 1500 liters of water. What factors need to be considered in evaluating the risk of toxicity?

   Hint

   Use the conceptual framework of risk assessment and consider freshwater criteria.