3.1. Duration of Contamination

Try these first

1. 1.

   What is D-NAPL?

   Hint

   Think about its relationship to water.

2. 2.

   Define L-NAPL.

   Hint

   Consider what happens when it spills in water.

3. 3.

   What does D-NAPL stand for?

   • Light Non-Aqueous Phase Liquid
   • Dense Non-Aqueous Phase Liquid
   • Non-Aqueous Phase Solvent

   Hint

   Remember the behavior of the liquid in water.

4. 4.

   True or False: L-NAPLs sink in water.

   • True
   • False

   Hint

   Think about what happens when you pour oil in water.

5. 5.

   Model a clean-up strategy for a site contaminated with both D-NAPL and L-NAPL.

   Hint

   Remember the characteristics of each liquid and how they can be treated.

6. 6.

   Discuss how historical contamination might be managed by modern regulations.

   Hint

   Think about current environmental laws and standards.