What is the proper procedure for cleaning up contaminated soil?

The proper procedure for cleaning up contaminated soil involves removing the top 2-3 inches and disposing of it as hazardous waste. This method is critical for ensuring that contaminants do not pose a risk to human health or the environment. The top few inches of soil layer are typically where most contamination occurs due to factors such as moisture, chemical applications, and surface interactions.

By addressing these top layers, you eliminate a significant source of potential pollutants. Disposing of this soil as hazardous waste is vital because it ensures that the contaminants are handled appropriately and do not infiltrate surrounding areas or waterways, which might lead to broader environmental issues.

In contrast, simply leaving the contaminated soil undisturbed can allow the contaminants to persist, potentially causing harm over time. Removing only the top 1-2 inches is often insufficient to fully address the contamination, as deeper layers may still harbor hazardous substances. Covering the contaminated area with clean soil does not solve the problem and can exacerbate the situation by burying the contamination, making it more challenging to manage in the future. Proper cleanup through the prescribed method helps mitigate health risks and restores soil integrity.