CDPH Lead Inspector/Assessor California State Practice Exam

What is a limitation of worst case sampling compared to other sampling methods?

1. It measures only exterior surfaces

2. It requires evaluation of all units in a dwelling

3. It restricts sampling to upper floors only

4. It is only useful for single-family homes

The correct answer is: It requires evaluation of all units in a dwelling

The limitation of worst case sampling is that it requires the evaluation of all units in a dwelling. This method is designed to determine potential lead exposure by considering the highest possible concentration of lead that could be present, which necessitates inspecting all living units to fully assess the risk. This thorough approach can be resource-intensive, making it less practical compared to other sampling methods that might focus on a representative subset or specific areas without the need for a comprehensive evaluation of every unit. In contrast, other sampling methods may allow for more flexibility and efficiency by sampling only a selection of units or designated areas, which could result in a less complete but more manageable assessment strategy. The requirement to evaluate all units can lead to increased time and costs, rather than the targeted assessments that other methodologies may utilize.