What statement is true regarding vapor dispersion?

• A. The runoff may need to be contained
• B. Runoff should be released to the atmosphere
• C. Vapor dispersion does not involve runoff management
• D. There is no need to consider runoff

Answer: (A)

Vapor dispersion focuses on the spread of airborne vapors, but you can’t ignore any liquid that might escape the scene. If the material is spilled or condenses, it can create liquid runoff that travels away from the source. Containing that runoff helps prevent the contamination from spreading to drains, soil, or water sources and reduces both environmental and exposure risks. Releasing runoff to the atmosphere would merely move the problem, not solve it, and implies poor control. Saying there’s no need to consider runoff or that it doesn’t involve runoff management overlooks the practical step of preventing secondary contamination, which is a standard part of managing any vapor-related incident.