What is the first step upon arriving at a possible hazmat incident?

• A. Move toward the source to identify hazards.
• B. Begin patient triage immediately.
• C. Step back and assess the situation.
• D. Enter the area wearing improvised PPE.

Answer: (C)

When arriving at a possible hazmat incident, the priority is to perform a scene size-up from a safe distance. Step back to observe wind direction and how the spill or release is behaving, identify potential hazards, locate the source, assess access routes, and determine how many people might be affected. This initial assessment protects you and other responders by preventing exposure before you have the right PPE and a plan, and it guides you in establishing a safe perimeter and calling for needed resources.

Rushing toward the source to identify hazards can put you at immediate risk, and trying to triage patients before ensuring scene safety can spread contamination or worsen injuries. Entering the area with improvised PPE is unsafe because it often doesn’t meet the protection standards required for hazardous substances, and proper protective equipment and procedures should be applied only after a thorough hazard assessment and command guidance.