1.   Industrial waste had leaked into the water supply.

2.   Kenyan dock workers had complained fumes were escaping from the shipping containers, and rumors soon spread that toxic waste was leaking.

3.   The EPA feared waste had leaked from lagoons into the groundwater flow.

4.   Guinn and others in Nevada say the Department of Energy has not proven that nuclear waste will not leak into ground water.

5.   Environmental groups voiced concern about the possibility radioactive waste could leak from the site and contaminate ground water.

6.   The waste leaked through a crack in the floor.

7.   Radioactive waste has leaked from a tank at a nuclear power station in southern Ukraine, officials at the plant said Thursday.