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

When assessing multi-family community buildings up to 2,000 square feet, how should dust sampling results be collected?

1. Only from doorways

2. From a single location in each unit

3. From two floor dust samples in high traffic areas and two from different windows

4. From random sampling throughout the building

The correct answer is: From two floor dust samples in high traffic areas and two from different windows

The approach of collecting dust sampling results from two floor dust samples in high-traffic areas and two from different windows is supported by best practices for evaluating potential lead hazards in multi-family community buildings. This method ensures a comprehensive assessment by targeting locations that are more likely to accumulate lead dust due to frequent use and potential sources of lead contamination. High-traffic areas, such as hallways and the entrances of units, are prime spots where residents and visitors might inadvertently stir up or track in dust containing lead particles. Additionally, sampling from windows is crucial, as they can be significant sources of lead dust due to friction from opening and closing, as well as chipping paint and other deteriorating conditions that might lead to contamination. By combining samples from these two types of locations, the assessment gives a better representation of the lead dust levels present throughout the unit. It also aligns with regulatory guidance that emphasizes the importance of targeted sampling in areas most likely to pose a risk. This thorough approach supports effective risk assessment and management in multi-family settings.