Environmental Protection Agency (EPA) Model Lead Based Paint Risk Assessor Practice Test

How many dust wipe samples should be collected during a Lead Hazard Screen?

1. 1 composite sample

2. 2 composite samples

3. 5 dust samples

4. Only 1 sample from each room

The correct answer is: 2 composite samples

The correct answer is that two composite samples should be collected during a Lead Hazard Screen. This requirement aligns with the guidelines set by the Environmental Protection Agency (EPA) regarding lead-based paint assessments. The collection of two composite samples provides a more reliable representation of potential lead dust hazards within a residence. Using a single sample might not adequately capture variations in lead dust levels across different areas of a property, while one composite sample from multiple locations allows for a broader assessment of lead hazards that might be present. In this context, a composite sample is created by combining dust collected from multiple surfaces within a specific area or room. The purpose of collecting these samples is to ensure that lead dust risks are effectively evaluated and that any remediation needed can be based on comprehensive data. This thorough approach supports better public health protection by ensuring that all areas of concern have been adequately tested. Overall, this sampling strategy is critical for managing and reducing lead exposure risks, especially in environments with children or pregnant women, who are particularly vulnerable to the harmful effects of lead.