Surface Impoundments

{
  "id": "MLC-T-ENV-027355",
  "term": "Surface Impoundments",
  "field": "Environment",
  "definition": "1. Lined ponds storing hazardous waste.\n\n2. A surface impoundment is a natural topographic depression, man-made excavation, or diked area formed primarily of earthen materials (although some may be lined with man-made materials), that is designed to hold an accumulation of liquid wastes or wastes containing free liquids. Examples of surface impoundments are holding, settling, storage, and elevation pits; ponds, and lagoons.",
  "subject": "Chemicals, toxics and pesticides",
  "references": [
    "Superfund for Students and Teachers Glossary",
    "TRI Reporting Forms and Instructions"
  ],
  "url": "https://mlchart.com/terminology/environment/surface-impoundments/"
}