Single surface wipe samples should be used when:

Single surface wipe samples should be used when:

• A. Information is needed to determine leaded dust levels in a specific location
• B. The goal is to assess overall building contamination
• C. For routine screening of all surfaces
• D. When time allows for broad sampling

Answer: (B)

The idea behind this sampling approach is to get a quick, overall read of the building’s lead dust burden without collecting data from every surface. A single surface wipe can serve as a practical snapshot that helps determine whether the building, on the whole, has elevated contamination and whether more extensive testing is warranted. It’s efficient and informative for an overall assessment, rather than focusing on precise levels at many individual surfaces. If you needed information for a specific location, you’d target that surface to get location-specific data. Routine screening of all surfaces or broad, building-wide testing would require multiple wipes to map distribution and avoid drawing conclusions from a single sample. When time allows for broad sampling, the plan would involve collecting from multiple surfaces to characterize where contamination exists rather than relying on one surface.

The idea behind this sampling approach is to get a quick, overall read of the building’s lead dust burden without collecting data from every surface. A single surface wipe can serve as a practical snapshot that helps determine whether the building, on the whole, has elevated contamination and whether more extensive testing is warranted. It’s efficient and informative for an overall assessment, rather than focusing on precise levels at many individual surfaces.

If you needed information for a specific location, you’d target that surface to get location-specific data. Routine screening of all surfaces or broad, building-wide testing would require multiple wipes to map distribution and avoid drawing conclusions from a single sample. When time allows for broad sampling, the plan would involve collecting from multiple surfaces to characterize where contamination exists rather than relying on one surface.