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

What level of lead concentration in bare soil requires permanent abatement?

1. 1,000 ug/g

2. 2,000 ug/g

3. 5,000 ug/g

4. 10,000 ug/g

The correct answer is: 5,000 ug/g

The requirement for permanent abatement of lead in bare soil is dictated by specific thresholds established by regulatory bodies regarding the potential health risks posed by lead exposure. A concentration of 5,000 micrograms of lead per gram of soil (ug/g) is significant because it represents a high enough level of contamination that remediation becomes necessary to protect public health, particularly in areas frequented by children or pregnant women, who are more vulnerable to lead poisoning. Lead exposure can lead to severe health issues, including developmental delays and cognitive impairment in children. Therefore, identifying and remediating lead concentrations at this level is crucial to prevent harmful exposure. The thresholds for abatement are based on extensive research and health studies that indicate the risks associated with lead in the environment, highlighting the importance of maintaining safe levels of lead in residential areas. In contrast, lower concentrations of lead in soil may not warrant immediate or permanent abatement measures, as they are below the established levels that significantly contribute to health risks. This establishes the rationale behind the specific threshold of 5,000 ug/g, making it the level that necessitates permanent abatement actions.