Observed contamination

{
  "id": "MLC-T-ENV-019282",
  "term": "Observed contamination",
  "field": "Environment",
  "term_source": "Observed Contamination",
  "definition": "Observed contamination is established for the soil exposure pathway only by chemical analysis. The minimum requirements for establishing observed contamination in the soil exposure pathway are (1) analytical data that the concentration of at least one hazardous substance attributable to the site is significantly above background level, (2) information that some portion of that increase is attributable to the site, and (3) the hazardous substance is present at the surface or is covered by two feet or less of cover material (e.g., soil) other than an essentially impenetrable material (e.g., asphalt).",
  "subject": "Health and safety",
  "references": [
    "Hazard Ranking System Glossary"
  ],
  "url": "https://mlchart.com/terminology/environment/observed-contamination/"
}