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

What should blank wipes have no more than in terms of lead level?

1. 1 ug/ft2

2. 5 ug/ft2

3. 50 ug/ft2

4. 100 ug/ft2

The correct answer is: 5 ug/ft2

The correct lead level for blank wipes is established at 5 micrograms per square foot (ug/ft²). This standard is significant because it indicates the maximum allowable lead component in wipe samples that are used to assess lead dust levels in environments, particularly those that have lead-based paint hazards. The purpose of using wipes is to determine if lead dust is present at levels that may pose a risk to human health, especially for young children or pregnant women. A level of 5 ug/ft² is set as a threshold to ensure that any dust collected does not indicate a hazardous condition, hence reflecting a standard of safety. Standards for lead levels in wipes have been established based on health assessments, studies, and regulations by government bodies, including the EPA. The specified level of 5 ug/ft² is deemed appropriate for identifying and mitigating the risk of lead exposure from environmental sources while maintaining a margin of safety for public health.