Which zone is designated for safety and nonhazard operations, commonly referred to as the cold zone?

• A. Hot/exclusion zone
• B. Warm zone
• C. Cold zone
• D. Blue zone

Answer: (C)

In hazardous materials incident response, the area farthest from the release is kept clear for safety and nonhazard operations, and that is the cold zone. This zone is where you set up the incident command post, staging, rehabilitation, and other support functions, all while avoiding contamination and unnecessary exposure. People here typically don’t need to wear protective clothing for the hazard because the area is considered nonhazardous, making it suitable for coordination, administrative tasks, and recovery activities. The warm zone sits between the cold zone and the hot/exclusion zone and handles decontamination, while the hot zone is closest to the release and contains the highest hazard. The blue zone isn’t a standard designation for the cold zone in the typical hazmat model.