Which surface is not typically included in the general sampling plan?

Which surface is not typically included in the general sampling plan?

• A. Windowsill.
• B. Ceiling.
• C. Window trough.
• D. Floor sample adjacent to the work area.

Answer: (B)

In a general lead-dust sampling plan, the focus is on surfaces where settled lead dust is most likely to accumulate and be encountered during cleanup and re-occupancy. Floors adjacent to the work area, window sills, and window troughs are included because dust tends to settle on horizontal surfaces where people and activities interact, especially near windows and along the floor. The ceiling is not typically included because dust deposition on overhead surfaces is far less common in routine scenarios, unless there was specific overhead work or unusual contamination. So the ceiling is the surface not typically included in the general plan.

In a general lead-dust sampling plan, the focus is on surfaces where settled lead dust is most likely to accumulate and be encountered during cleanup and re-occupancy. Floors adjacent to the work area, window sills, and window troughs are included because dust tends to settle on horizontal surfaces where people and activities interact, especially near windows and along the floor. The ceiling is not typically included because dust deposition on overhead surfaces is far less common in routine scenarios, unless there was specific overhead work or unusual contamination. So the ceiling is the surface not typically included in the general plan.