1.   Nuclear waste Disposal of intermediate level nuclear waste on land also presents a hazard.

2.   Also, windy conditions may present special hazards.

3.   As a practical matter, the spacing between signals only presents a hazard when a train operator fails to obey the rules of the road, officials said.

4.   Asbestos presents a hazard only when it becomes airborne and can be inhaled, but even the wind-driven rusty tufts posed little risk, they said.

5.   If they were empty, however, they presented no hazard.

6.   In addition, he said, railroad crews would clear away trees or brush that might present a hazard along the tracks.

7.   In below- or near-freezing temperatures, water on bridges will freeze before the roadway, presenting a hazard.

8.   In below- or near-freezing temperatures, water on bridges will freeze before the rest of the roadway, presenting a hazard.

9.   Nuclear waste burial sites, filled with contaminated reactor parts from the explosion, also present a hazard.

10.   Source water from a river - because of contamination upstream - is generally more likely to present a hazard than well water.