CDPH Lead Inspector/Assessor California State Practice Exam

For 5-20 similar dwellings, what is the required number of dwellings to sample in a risk assessment?

1. 2 dwellings

2. 3 dwellings

3. 4 dwellings or 50%

4. 5 dwellings

The correct answer is: 4 dwellings or 50%

In a risk assessment for 5-20 similar dwellings, the requirement to sample 4 dwellings or 50% is based on guidelines designed to ensure a statistically relevant representation of the properties being evaluated. This approach allows for a better understanding of lead hazards that may exist across the dwellings, as it takes into account variability and potential differences in conditions. Sampling 50% of the dwellings provides a balanced perspective, ensuring that enough data is collected to inform recommendations and necessary actions. This method not only mitigates the risk of missing significant lead hazards but also adheres to regulatory guidelines that prioritize health and safety by addressing the potential exposure to lead-based hazards in residential properties. In contrast, choosing fewer dwellings may not provide a complete picture of the conditions present across the entire set of similar dwellings, which could lead to underestimation of risk or overlooked safety issues. By sampling 4 dwellings in this specified range, the assessment can effectively represent the entire group and lead to more reliable risk management and mitigation strategies.