Liner

{
  "id": "MLC-T-ENV-015830",
  "term": "Liner",
  "field": "Environment",
  "definition": "1. Structure of natural clay or manufactured material (plastic) which serves as a barrier to restrict leachate from reaching or mixing with ground water in landfills, lagoons, etc.\n\n2. A flexible sleeve in the milking teat cup or rigid-walled liner holder. Responsible for massaging the teat end and intermittently cutting vacuum at the teat end during milking. Also called an inflation.\n\n3. A relatively impermeable barrier designed to keep leachate inside a landfill. Liner materials include plastic and dense clay.\n\n4. An insert or sleeve for sewer pipes to prevent leakage or infiltration.\n\n5. Soil or synthetic material that has a hydraulic conductivity of 1×10-7 centimeters per second or less.\n\n6. Continuous layer of natural or man-made materials, beneath or on the sides of a surface impoundment, landfill, or landfill cell, which restricts the downward or lateral escape of hazardous waste, hazardous waste constituents, or leachate.\n\n7. A continuous barrier that covers all the earth likely to be in contact with a source so that hazardous substances or leachate containing hazardous substances would not migrate to the surrounding earth. The barrier may be synthetic material (e.g., a thick, continuous polyethylene membrane) or engineered, compacted natural material (e.g., re - worked and low permeability clay). However, an in - situ clay layer that has not been re - engineered by compaction or other methods is not considered a liner.",
  "subject": "General environmental",
  "references": [
    "Environmental Issues Terms & Acronyms",
    "Ag 101 Glossary of American Agriculture",
    "RCRA Glossary of Terms; Terms of Environment",
    "Terms of Environment",
    "40 CFR 503.21 (CFR 2013)",
    "40 CFR 260.10 (CFR 2013)",
    "Hazard Ranking System Glossary"
  ],
  "url": "https://mlchart.com/terminology/environment/liner/"
}