Which scale of evacuation is associated with Level III incidents?

• A. Localized
• B. Large scale
• C. None
• D. Minimal

Answer: (B)

Level III incidents involve a major hazmat event with a significant potential for exposure, so protective actions must reach a large portion of the population. Because the hazard can affect areas well beyond the immediate scene, evacuations are implemented on a large scale to move people away from the risk and reduce exposure, often covering multiple streets, neighborhoods, or broader sectors of a community. Smaller, localized evacuations are associated with less severe or more contained scenarios, while minimal actions don’t require extensive evacuation. Sheltering in place can be used in some Level III situations, but when evacuation is warranted, it is on a large scale. Therefore, the evacuation scale most appropriate for Level III incidents is large scale.