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

What is the best determination for dust wipe sampling in the context of lead exposure?

1. 25 ug/wipe

2. 50 ug/wipe

3. 10 ug/wipe

4. 100 ug/wipe

The correct answer is: 25 ug/wipe

The determination of 25 µg/wipe for dust wipe sampling in the context of lead exposure reflects the regulatory guidance provided by the Environmental Protection Agency (EPA) for assessing lead hazards in residential settings. This specific threshold is significant because it is used to indicate the presence of lead dust in homes, particularly those built before 1978 when lead-based paints were commonly used. When lead dust levels are found to be at or above this threshold, it suggests that there may be a significant risk of lead exposure to occupants, particularly young children who are more susceptible to the harmful effects of lead. This determination supports the need for further investigation and potential remediation actions to reduce lead exposure risks and protect public health. In this context, the choice of 25 µg/wipe aligns with the EPA's risk assessment protocols, emphasizing the importance of having a scientifically backed standard that guides risk assessors in evaluating lead contamination effectively. This standard serves to identify conditions that necessitate intervention and helps in formulating health protective measures.