Landfills are filled with a lot of human garbage, and they are required to follow stringent environmental guidelines, and with that follows a highly engineered liner system to contain them. The first part of a landfill is the impermeable bottom layer to contain the waste as it is being placed. Once the landfill is full it needs to be ‘capped’ over to completely contain the waste and to eliminate any possibility of future leachate from the waste.

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