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Active Cell
 Waste is spread on top of a composite clay and synthetic liner that prevents rainwater from filtering through the waste into the ground. At the end of each day, special bulldozers are used to compact the trash and cover it with several inches of soil to prevent exposure and reduce odor.
Leachate Pretreatment
 At the base of each cell is a sophisticated leachate collection system that collects the leachate. Leachate is then pumped to a holding tank for later transportation to a wastewater treatment plant.
 In Action: Take a virtual tour of the Clinton County Landfill here. To view it, you'll need the Quicktime VR plugin, which you can get in Tools.
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Cover Soils
 Soil removed from recently excavated cells is kept for later use as cover material — daily cover at the end of each day; intermediate cover on interim cells that will not receive waste for a longer period; and final cover when a cell is capped.
Capped Cell
 Eventually a landfill cell will reach its maximum capacity, and cannot contain any more waste. When this happens, we close the cell by "capping" it with several feet of clay, soil and top soil. Capped cells are then vented to let gases — naturally created from decomposition — to safely escape.
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