Arrange the hazmat zones from cleanest to most contaminated.

Arrange the hazmat zones from cleanest to most contaminated.

• A. Cold zone, Warm zone, Hot zone
• B. Warm zone, Cold zone, Hot zone
• C. Cold zone, Hot zone, Warm zone
• D. Hot zone, Cold zone, Warm zone

Answer: (A)

In hazmat operations, zones are arranged to protect responders by moving from clean to contaminated and back through decontamination. The cold zone is the clean area where command, staging, and medical monitoring occur. The warm zone sits between cold and hot and acts as the decontamination buffer. The hot zone is the most contaminated area where the hazard is present and access is restricted to trained personnel in proper PPE. Therefore, arranging from cleanest to most contaminated follows this sequence: cold zone, then warm zone, then hot zone. This setup helps prevent cross-contamination and guides safe movement through the incident.