Distinguish between isolation zone and exclusion zone in hazmat ICS terms.

• A. Isolation zone is outside the contaminated area; Exclusion zone is the inner hazard area.
• B. Isolation zone is where entry is unrestricted; Exclusion zone is where PPE is optional.
• C. Isolation zone is where a safe area; Exclusion zone is the safe staging area.
• D. Isolation zone surrounds the hazard to contain it; Exclusion zone is the outer boundary where entry is restricted to authorized personnel.

Answer: (D)

In hazmat ICS, containment and access control are handled with two zones. The isolation zone is the inner ring around the hazard; it surrounds the hazard to contain it and provides a controlled area where containment and decontamination actions can be performed safely. The exclusion zone sits on the outer boundary; entry is restricted to authorized personnel equipped with the proper PPE. This separation protects people outside the incident and ensures only trained responders approach the hazard. The isolation zone focuses on containing the release, while the exclusion zone enforces access control to prevent unwanted exposure.