landfill

Environmentally acceptable disposal of waste on ground. Sanitary landfills are where non-hazardous waste is spread in layers, compacted, and covered with earth at the end of each working day. Secure landfills are those where hazardous waste is disposed of by burial, in holes or trenches in ground lined with impervious plastic sheeting to prevent leakage or leaching of dangerous substances into soil and water supply.

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