Which of the following is NOT one of the three types of decontamination?

• A. Emergency
• B. Mass
• C. Technical
• D. Chemical

Answer: (D)

Decontamination is a crucial process in hazardous materials response, and it typically falls into three recognized categories: emergency, mass, and technical decontamination.

Emergency decontamination is performed rapidly to prevent further harm or exposure, often in life-threatening situations. Mass decontamination involves large groups of people who may have been exposed to hazardous materials, such as in a public incident, and is often carried out in a systematic, organized manner. Technical decontamination, on the other hand, involves more intricate procedures, usually criteria-based and conducted by trained personnel using specific methods and materials to reduce contamination.

The option labeled as chemical decontamination, while it may describe a method of applying specific chemicals to neutralize or remove contaminates, does not represent a distinct type of decontamination in the broader categorization of approaches used in hazardous materials incidents. Thus, it is not classified as one of the three main types.