For a backyard that does not have a child, what soil lead percentage range requires a response?

In the context of lead exposure and health risks, particularly in environments where children may play, soil lead levels are a critical concern. For a backyard where there is not a child, the threshold for determining an appropriate response to lead contamination is still significant.

The correct choice indicates a range of 1,200 PPM to 5,000 PPM. This range is marked as a level where proactive measures are necessary to prevent potential exposure for visitors, future residents, or incidental contact by children who may come into the yard. Lead exposure can occur through direct contact with contaminated soil, and even if a child does not currently reside in the area, the presence of lead at this level suggests that it poses a notable risk and calls for remediation efforts to mitigate potential health hazards.

It is important to note that lower levels of lead, such as those below 1,200 PPM, while preferable, may not warrant immediate action, but higher levels, particularly those above 5,000 PPM, signify a severe contamination risk, necessitating urgent remediation.

In summary, the specified range indicates a proactive measure to protect against potential future exposure, making it necessary to address lead contamination even in the absence of children.