Which pair of strategies is most effective for reducing exposure during a hazardous materials incident?

• A. Increase time and approach.
• B. Minimize time and maximize distance.
• C. Stay near the source and ignore wind direction.
• D. Do nothing.

Answer: (C)

In a hazardous materials situation, you reduce exposure by two practical levers: the time you spend near the hazard and how close you are to the source. The most effective approach is to minimize the time spent in the contaminated area and maximize your distance from the source, ideally keeping yourself upwind so the plume moves away from you. Shortening the time you’re exposed lowers the total dose, and increasing distance lowers the concentration you encounter (becauseHazMat plumes disperse and dilute with distance, and being upwind keeps you out of the highest concentrations). Choices that keep you near the source or disregard wind direction wind up placing you in higher concentrations for longer, which raises the risk considerably. Doing nothing offers no protection and leaves you vulnerable to any release.