Area of Observed Contamination

{
  "id": "MLC-T-ENV-002070",
  "term": "Area of Observed Contamination",
  "field": "Environment",
  "definition": "Evaluated only in the soil exposure pathway and established based on sampling locations as follows: (1) Generally, for contaminated soil, consider the sampling locations that indicate observed contamination and the area lying between such locations to be an area of observed contamination, unless information indicates otherwise. (2) For sources other than contaminated soil, if any sample taken from the source indicates observed contamination, consider the entire source to be an area of observed contamination. (3) If an area of observed contamination (or a portion of such an area) is covered by a permanent, or otherwise maintained, essentially impenetrable material (e.g., asphalt), exclude the covered area from the area of observed contamination. However, asphalt or other impenetrable materials contaminated by site - related hazardous substances may be considered areas of observed contamination.",
  "abbreviation": "AOC",
  "subject": "Health and safety",
  "references": [
    "Hazard Ranking System Glossary"
  ],
  "url": "https://mlchart.com/terminology/environment/area-of-observed-contamination/"
}