During a risk assessment, what must be sampled for lead content?

During a risk assessment, it is essential to sample multiple materials that may contain lead to achieve a comprehensive understanding of lead exposure risks. This includes paint, dust, and soil.

Sampling paint is crucial because lead-based paint was commonly used in homes built prior to 1978. Dust is also a significant concern as it can accumulate lead particles from deteriorating paint or contaminated soil, leading to potential inhalation or ingestion risks, especially for children. Soil is sampled because it can become contaminated from lead paint debris or historical uses of lead in gasoline and other industrial applications. Thus, by sampling paint, dust, and soil, assessors can effectively evaluate all potential sources of lead exposure in a residential or environmental setting.

Focusing solely on one type of material would not provide the comprehensive assessment needed to identify lead hazards. For instance, only sampling paint would miss possible exposure from dust or soil, which could present significant risk. Therefore, a comprehensive approach that includes all these materials is necessary for effective lead risk assessment.