What amount of deteriorated lead-based paint or dust is permissible in clearance sampling?

In the context of clearance sampling for lead-based paint or dust, the standard is that no amount of deteriorated lead-based paint or dust is permissible. This means that in order to pass clearance, the areas that have been tested must have no detectable lead levels. The rationale behind this strict requirement stems from the serious health risks associated with lead exposure, especially for vulnerable populations such as children and pregnant women.

Clearance sampling is used after lead hazard control work to verify that the environment is safe and free from lead contamination. If any lead is detected, it indicates that the work may not have been sufficiently thorough, and further remediation is needed to ensure the safety of the space.

The other options imply that some level of lead could be acceptable, which contradicts the established safety standards that aim to eliminate any potential risk of lead exposure.