If you observe potential hotspots in a facility, which sampling approach would you deploy to identify them?

• A. Personal sampling during a task.
• B. Area sampling across locations.
• C. Laboratory analysis of materials only.
• D. No sampling is necessary.

Answer: (B)

To find hotspots, you need a spatial view of contamination across the facility. Area sampling places sensors or samplers at multiple locations, creating a map of concentrations and revealing where levels spike. Personal sampling during a task follows a single worker’s exposure and doesn’t efficiently identify broader hotspots throughout the space. Laboratory analysis of materials alone can show what’s present but not where in the facility those levels are highest. Skipping sampling isn’t useful when you need to locate and characterize hotspots, so area sampling across locations is the best approach.