1.   The chemicals seeped into the ground.

2.   Chemicals are seeping into groundwater.

3.   Experts agree that in a chemical attack the chemicals would seep into the skin, so a chemical suit should be worn along with a mask.

4.   It was designated a federal Superfund site after it was discovered that chemicals had seeped into the groundwater in the area.

5.   Authorities say hydrochloric acid and other chemicals seeped from vials in the box.

6.   He said the chemical could seep into ground and surface water in dangerous concentrations and remain more than a year.

7.   Naidu zapped them with strong pesticides, but the chemicals seeped through his thin cotton face mask, giving him violent headaches.