What is the primary purpose of daily cover in landfills?

The primary purpose of daily cover in landfills is to limit vectors, fires, scavengers, and odors. Applying a layer of cover material, such as soil or alternative materials, helps to create a barrier over newly deposited waste. This layer serves several important functions: it helps to deter insects, birds, and other animals that might be attracted to the waste, thereby limiting vector populations that could pose health risks. It also suppresses odors that can emanate from the waste, improving the surrounding environment for nearby communities. Additionally, the cover reduces the risk of fires, which can occur from various factors including spontaneous combustion within the waste.

While promoting decomposition of waste, enhancing aesthetic value, and reducing weight are relevant considerations in landfill management, these functions are secondary to the main priority of ensuring safety and minimizing nuisances associated with landfill operations.