Which of the following describes a "composite dust sample"?

A "composite dust sample" refers to a combination of multiple samples that are collected from different locations or surfaces and then analyzed together as a single entity. This technique is particularly useful in assessing lead dust levels across a broader area rather than relying on a single sample from one spot, which may not accurately represent the overall lead exposure risk in a home or building.

By aggregating multiple samples, the analysis provides a more reliable and comprehensive view of lead contamination, as it helps to minimize the impact of localized variations and offers a more generalized understanding of lead dust presence in the environment. This approach is especially valuable in risk assessments where understanding the cumulative exposure is crucial for determining safety measures and interventions.