Principal areas of study include soil contamination and water pollution.

It has also been accused of harming the environment, particularly by causing soil contamination.

Effects occur to agricultural lands which have certain types of soil contamination.

There are questions about possible soil contamination on the chosen site.

Groundwater and soil contamination has been identified in various areas of the base's original property boundaries.

The corporation has been fined 25 times for soil contamination at its Florida plant.

However, these fears were not realized, as soil contamination proved to be superficial.

School officials yesterday defended their decision to begin classes for 500 students on Sept. 4 with the question of soil contamination lingering.

About the residents' concerns of soil contamination, she said, "I don't know how you change people's opinions."

Sheep dips have been found to cause some soil contamination and water pollution.