In Level III hazmat incidents, evacuation is described as which scale?

• A. Small block evacuations
• B. One mile upwind
• C. Several blocks
• D. Large-scale evacuation

Answer: (D)

In Level III hazmat incidents, protective actions scale up to safeguard a broad population, so evacuation is described as large-scale. When the release is severe, the plume and exposure risk can affect many blocks or even larger areas, requiring coordinated action across agencies to move people away from the hazard and establish safe zones, shelters, and reception areas. The other scales—evacuating only a few blocks or within a limited distance upwind—fit smaller or less severe incidents where the threat is more localized or more limited in scope. Thus, Level III calls for a broad, community-wide evacuation rather than a minimal or localized effort.