Which element is the on-scene area where decontamination occurs?

• A. Decontamination corridor
• B. Cordon
• C. Incident Command Post
• D. ACP

Answer: (A)

Decontamination occurs in a decontamination corridor, a dedicated on-scene passage that links the hot zone to the rest of the area. This corridor is designed to control the flow of people and contaminants, providing a staged process (often including changing areas and wash-down) so that contaminants are removed before anyone re-enters cleaner zones. It keeps the contaminated entry separate from the clean areas and helps manage wastewater and environmental contamination, protecting both responders and the public. The other options describe different functions: a cordon is a perimeter to restrict access, the Incident Command Post is where overall command and coordination happen, and ACP is typically a point for access control or patient processing, not for decontamination.