Which is true about interim controls for lead management?

Interim controls for lead management are designed to reduce lead exposure temporarily while more permanent solutions are developed and implemented. These controls can include methods such as sealing lead paint, using barriers, or employing specialized cleaning techniques. The key aspect of interim controls is that they are not intended to be long-lasting; rather, they are a stop-gap measure to mitigate risks associated with lead hazards.

In this context, the statement that interim controls can last less than 20 years is true because these measures are usually implemented until permanent solutions—such as lead abatement—can be fully executed. Therefore, they are expected to be a short to medium-term solution rather than a lasting fix, which aligns with the definition and intent of interim controls in managing lead exposure.

Understanding this concept is crucial for those involved in lead risk management, as it emphasizes the need for ongoing efforts to ensure that lead hazards are eventually eliminated, rather than relying solely on interim management strategies.