Soil can become an issue in several situations: 1) When relocating or redeveloping enterprises, soil investigations are required before transferring sites to ensure no remediation is needed. 2) After calamities or malfunctions that cause spills or leaks, authorities may mandate soil investigations and remediation to restore contamination. 3) During acquisitions, due diligence assessments evaluate past spills requiring future remediation or monitoring. 4) Risk control involves monitoring soil and groundwater quality to ensure contaminants don't impact the environment or production.