Which action is recommended if contaminated soil is encountered during earthwork?

• A. Ignore and continue.
• B. Remove and replace or treat in place per spec; disposal to approved areas.
• C. Cover it with topsoil.
• D. Dispose of it on-site.

Answer: (B)

When contaminated soil is found during earthwork, the work must follow environmental regulations and project specifications. The best action is to remove and replace the contaminated soil, or treat it in place per the spec, with disposal to approved areas. This approach stops the spread of contaminants, ensures backfill meets performance requirements, and keeps the project in compliance with environmental permits and contract documents. Ignoring the contamination, covering it with topsoil, or disposing of it on-site without approved facilities can lead to contamination spread, health and safety risks, and regulatory violations. Properly handling and disposing of contaminated soil—often involving testing, segregation, certified waste handling, and disposal at approved facilities—protects people, the environment, and the integrity of the project.