Which pair of actions is commonly taken to secure a hazmat incident scene?

• A. Establish perimeter and access control; deploy ICS and assign roles including IC, Safety, and Liaison.
• B. Move immediately to neutralize the hazard.
• C. Remove all PPE and re-enter.
• D. Ignore the scene until investigators arrive.

Answer: (A)

Securing a hazmat incident scene starts with protecting people and preserving the scene through organization. Establishing a perimeter and access control creates an exclusion zone that limits exposure, prevents contamination from spreading, and keeps unauthorized individuals out. At the same time, deploying the Incident Command System with defined roles such as Incident Commander, Safety Officer, and Liaison ensures a coordinated, safety-focused response with clear authority, roles, and communication across agencies. Jumping straight to neutralizing the hazard without proper assessment increases risk; removing PPE and re-entering is dangerous and reckless; ignoring the scene until investigators arrive leaves the area unprotected and hampers proper documentation. Combining scene protection with a structured command setup is how responders effectively manage risk, protect the public, and preserve evidence.