What is the required depth for final landfill cover?

The required depth for final landfill cover is typically set at 24 inches. This standard is established to ensure adequate compaction and to provide a stable and effective barrier that helps prevent pollution and erosion. The final cover helps to mitigate the impact of the landfill on the surrounding environment by reducing leachate generation, controlling odor, and limiting access for scavengers. Cover material also supports vegetation growth, which promotes further stabilization and helps integrate the landfill site back into the natural landscape.

Using 24 inches as the requirement allows for a sufficient thickness that can withstand environmental forces such as wind and rain, which are critical in preventing the cover from washing away or being eroded over time. This depth is generally considered an industry standard and is supported by regulatory guidelines to ensure safety and environmental protection.