21.   In Mayan, that means underground water.

22.   In the landfill sites there is the danger that the heavy metals will leach into underground water.

23.   Instead of floating on underground water, the fuel is now smeared over rocks and in crevices, making it harder and more expensive to remove.

24.   It was sitting on a natural underground water source and required more reconstruction than anticipated.

25.   Johnson believes that they are simply tracing underground water sources.

26.   More than half the sinking so far has been blamed on the pumping of underground water from the area to ease construction, Stark said.

27.   Mller warns that the growing practice of using rainwater that falls onto roofs to recharge underground water may be adding to the danger.

28.   Observation wells were also drilled to help monitor any movement of radioactivity through underground waters.

29.   Other environmental experts, geologists and biologists point to potential problems with underground water storage.

30.   Saturating the plants and roots with salt will also work, but the earth would be contaminated for some time, and salt can get into underground water.