Which of the following is a recommended interim control when lead levels are exceeded in a play area?

The recommended interim control when lead levels are exceeded in a play area is planting greens or sod. This method serves as a physical barrier that can help to contain lead particles found in the soil, thereby reducing the likelihood of children coming into direct contact with contaminated soil while playing. By introducing grass or plants, the area becomes more visually appealing and also minimizes dust exposure, which can carry lead-contaminated particles.

Using vegetation as a control measure not only provides a temporary solution to mitigate lead exposure but also encourages environmental and aesthetic benefits to the play area. It is important to note that while this method helps manage lead exposure, it should ideally be part of a comprehensive approach that includes further assessments and permanent remediation solutions.