CDPH Lead Inspector/Assessor California State Practice Exam

What should be considered when determining the number of wipe samples to collect?

1. The age of the building

2. The number of floors

3. The number of similar units present

4. The type of renovation

The correct answer is: The number of similar units present

When determining the number of wipe samples to collect, taking into account the number of similar units present is essential because it ensures a statistically representative assessment of lead presence across the property. If a building has multiple similar units, sampling only a few may not provide an accurate depiction of potential lead contamination in all units. By increasing the number of samples to include various similar units, inspectors can better gauge the overall condition and risk of lead exposure throughout the building, making the assessment more comprehensive and reliable. While other factors such as the age of the building, the number of floors, and the type of renovation can influence lead exposure risk and the likelihood of contamination, they do not directly address the need for representative sampling across similarly constructed and occupied areas. Therefore, focusing on the number of similar units is the most critical aspect for ensuring adequate data representation in lead assessments.