What percent of acute hazardous material events occur in fixed locations where chemicals are used and stored?

• A. 50%
• B. 60%
• C. 75%
• D. 90%

Answer: (C)

Most acute hazardous material events happen at fixed facilities where chemicals are used and stored. The data show about three quarters—roughly 75%—of incidents occur at these fixed locations rather than during transport. This means responders should emphasize rapid scene size-up, securing the area, identifying the substance, and coordinating with facility personnel who know the site layout, inventory, and controls. Understanding that most events are at fixed sites helps shape pre-incident planning and initial response priorities, even though transport incidents still occur and require attention.