Which zone is the decontamination corridor located?

• A. Cold Zone
• B. Neutral Zone
• C. Warm Zone
• D. Hot Zone

Answer: (C)

Decontamination happens in a controlled transitional area between the hazard itself and the clean environment. The Warm Zone is exactly that space, sitting between the Hot Zone where the contaminant is present and the Cold Zone that’s kept clean for support and operations. Putting the decontamination corridor here allows responders to begin removing PPE, rinse off contaminants, and ensure equipment and personnel are decontaminated before crossing into the Cold Zone, preventing the spread of contamination. This setup creates a safe, orderly flow from hot to cold and minimizes cross-contamination risk. The Hot Zone is where the hazard is located; the Cold Zone is kept free of contamination; the Neutral Zone is not the designated decon area in standard hazmat practices. Therefore, the decontamination corridor is in the Warm Zone.