Landfills are constructed with a number of safeguards, and new federal standards require landfills to have liners, leachate collection systems, and gas monitoring systems. ... There are four critical elements in a landfill: a bottom liner, a leachate collection system, a cover, and the natural hydrogeologic setting. ... The liner creates a bathtub in the ground. ... There are three types of liners: clay, plastic, and composite. ... Methane Collection System Bacteria in the...

• Word Count: 2170
• Approx Pages: 9
• Has Bibliography
• Grade Level: High School

The municipal´s waste landfills may be one of the many causes of the ground water contamination, since many of the old solid waste landfills in municipals were often situated over aquifers which did not have clay or synthetic liners and leachate like they are required to have now. ... The new landfills are required to have clay or synthetic liners and leachate which it's a collection system that will help to protect the ground water so it will not get contaminated. ... A hazardous waste landfill is required double liner, double leachate collection and removal systems, leak detection syst...

• Word Count: 1544
• Approx Pages: 6
• Grade Level: Undergraduate