Suspicious that their household drinking water from a well was ...

[lilldybug07]

Suspicious that their household drinking water from a well was somehow being contaminated with gasoline, a family living in a farmhouse investigated possible sources of groundwater contamination.
 
  Sure enough, the underground storage tanks for gasoline at a nearby filling station were leaking. Promising to pay to fix the problem, the station owners sealed the gas tank and pumped out the contaminated groundwater. After several months of rain, the groundwater supplies were restored and the water in the well was safe to drink. This situation illustrated an example of A) reverse osmosis refinement.
  B) maximum containment remuneration.
  C) groundwater remediation.
  D) well-water containment.

Question 2

What is correlation? How can you be sure you are correlating the same layers?
 
  What will be an ideal response?

[pallen55]

Answer to Question 1

C

Answer to Question 2

Correlation is the process of matching up rocks in different places on the basis of their rock type or fossils or both. You can increase the accuracy of your correlation by examining rock layers above and below the layer in question, as well as performing detailed analyses of the fossil content.