What factors determine the number of surfaces to sample in a clearance plan?

• A. Based on project size, room layout, surface types, risk assessment, and jurisdictional requirements; sampling must be representative.
• B. Based on the number of rooms only.
• C. Based on the calendar date and weather.
• D. Based on the budget only.

Answer: (C)

The number of surfaces to sample in a clearance plan is driven by how diverse and large the space is and how likely different areas are to harbor residual contamination. You consider project size, room layout, surface types (e.g., walls, floors, wood, metal), the results of a risk assessment, and any jurisdictional requirements. The goal is to have sampling that is representative of all areas and surface types involved, not just a few spots. This ensures the clearance decision reflects the whole project, including high-risk or high-contact surfaces and different room zones.

Calendar date or weather doesn’t determine how many surfaces need to be sampled; they mainly affect scheduling and site access. Budget can influence resources, but it doesn’t set the minimum for representativeness required by standards or regulations.