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Clay is a fine-grained sedimentary particle. In order for pollutants and waste to leech through the clay would take longer than through any other type of soil (eg. gravel) because the matrix between the particles is smaller, and the particles are charged to be attracted to themselves creating a stronger barrier.

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Q: Why are landfills lined with clay?
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Related questions

What are sanitary landfills lined with?

clay andplastic


Why do landfills have liners?

To prevent the trash-polluted water from leaking into the ground, landfills have dense clay or plastic linings.


What would happen if landfills were lined with a layer of wood instead of plastic?

it means less leaks in the earth and more recycling.


What has the author D H Mitchell written?

D. H. Mitchell has written: 'Stability of lined slopes at landfills and surface impoundments' -- subject(s): Sanitary landfills, Linings, Soil stabilization, Soil erosion


Why do sanitary landfills have protective liners of compacted clay and high density plastic?

These liners prevent the contamination of groundwater


What is a landfill lind with?

A sanitary landfill is usually lined with a thick plastic layer and clay.


How do sanitary landfill sites prevent chemicals from moving into the groundwater?

To prevent chemicals from moving into the groundwater, sanitary landfills use plastic liners and compacted clay .


How do sanitary landfill sites prevent chemicals from moving into groundwater?

To prevent chemicals from moving into the groundwater, sanitary landfills use plastic liners and compacted clay .


What was the red pyramid made out of?

Clay and Mud And it's lined with gold i think. Don't take this as correct it is my best guess! Sorry


How many acres in the US are landfills?

560,000 acres are active landfills. I have no idea about old landfills


What will happen if landfills fill up?

When landfills fill up, people open up new landfills.


How many landfills are in Maine?

According to the state's Web site, there are approximately 50 active landfills in the State of Maine. An interactive map revealed that there are about 200 including the inactive landfills. The bulk of these landfills are in the southern part of the state.