What is the primary purpose of the final cover system in a landfill?

The primary purpose of the final cover system in a landfill is to minimize infiltration and erosion. This system is designed to create a barrier that reduces the movement of water into and through the waste, which helps to control leachate production. By limiting the amount of water that enters the landfill, the cover also helps in reducing potential environmental impacts on groundwater and surrounding ecosystems. Additionally, the final cover aids in preventing erosion by stabilizing the surface of the landfill, protecting it from wind and water runoff, which can lead to material loss and create hazardous conditions.

In contrast, supporting additional waste disposal is not a function of the final cover, as the cover is applied after the landfill reaches capacity. Protecting against wildlife is a consideration of landfill management, but it is not the primary role of the final cover; other measures may be employed to deter wildlife more effectively. While recreational use of a landfill may be planned post-closure, this is not the immediate or primary purpose of the final cover system. The main focus remains on environmental protection by minimizing infiltration and erosion.