Which is an example of an interim control for lead-contaminated soil?

Covering lead-contaminated soil with clean soil or mulch serves as an effective interim control measure. This method helps to encapsulate the contaminated soil, reducing the potential for exposure and minimizing the risk of lead dust becoming airborne or being directly contacted by individuals, particularly children who are more vulnerable to lead exposure. By applying clean soil or mulch, you create a barrier that both limits access to the contaminated layer underneath and minimizes the spread of lead particles.

Interim controls are vital in situations where complete abatement isn't feasible immediately, allowing for safer short-term management of lead hazards. This strategy can effectively lower lead levels at the surface and improve site safety until more permanent remedies can be executed.