During a PCAD, how many samples are needed if high-risk work was done?

In the context of a Post-Construction Assessment for Dust (PCAD), the requirement for the number of samples to be collected is based on considerations of risk and the scope of the work performed. When high-risk work has been conducted, such as lead abatement or extensive renovations, it is crucial to ensure that all areas potentially impacted by lead dust are adequately assessed.

The correct approach often entails taking a sample from each room that was affected by high-risk work to comprehensively evaluate the presence of lead dust and ensure safe conditions. This practice ensures that any remaining lead hazards are identified and addressed, thereby protecting occupants from exposure. By correlating the number of samples to the number of rooms where high-risk work was done, the assessment reflects a targeted and thorough evaluation, tailored to the specific areas that require scrutiny after such work.

This method contrasts with a fixed number of samples like 3, 7, or 10, which might not provide an adequate evaluation if multiple rooms were involved in the high-risk work. Thus, assessing each affected space helps ensure compliance with safety standards and effective risk management regarding lead exposure.