CDPH Lead Inspector/Assessor California State Practice Exam

In buildings frequented by children, how many window dust samples are required for a risk assessment of 2,000 square feet or less?

1. 1 sample

2. 2 samples

3. 3 samples

4. 4 samples

The correct answer is: 2 samples

For a risk assessment in buildings where children are frequently present, regulations typically require the collection of two dust samples from windows to adequately evaluate lead dust exposure. This standard is in place to ensure a more comprehensive assessment of the potential lead hazards within the environment, particularly where young children may be at risk due to their tendency to engage with surfaces that might be contaminated. The rationale for taking two samples is to ensure variability is adequately captured. Collecting only one sample could provide an insufficient overview of the lead dust levels present, which may not represent the overall risk within the building adequately. Therefore, requiring two samples provides a more reliable assessment of the conditions in these environments, allowing for necessary interventions if lead levels exceed safety thresholds.