When evacuating people from a hazardous materials event, the people should be kept _____.

When evacuating people from a hazardous materials event, keeping them upwind is essential for their safety. Being upwind means that the individuals are positioned away from the direction the wind is blowing, which minimizes their exposure to harmful substances that may be released into the air. This approach helps ensure that any toxic fumes, vapors, or particulates released from the hazardous materials do not travel towards the evacuating individuals, thereby reducing the risk of inhalation or contamination.

The principle of positioning individuals upwind is a standard practice in emergency response to hazardous materials incidents, as it protects them from harmful exposure while allowing emergency responders to assess and manage the situation effectively. Keeping evacuees close to the source or downwind would increase the risk of exposure to hazardous substances, and an insecure position would not adequately protect individuals from potential dangers. Therefore, evacuating people upwind is the safest course of action in such scenarios.