Landfill has their own specific construction that have to made for the sake of environment, health and safety. Landfill will be the cause of environment pollution if not made properly. The combination of trash in it could spread disease. Moreover, it led to landslide and not safe for people who work on it.
Traditional landfills are hardly cause many environment problems, because it is only a man-made hole without any treatment. Every trash that put in here, occasionally mix one and another, create a really bad smell and a highly potential of leaching to the fresh water.
Along with time, engineer provide a sophisticated design for modern landfill. First, landfill need to be place above and far from clear and fresh water and then make clay soil layer with a synthetic substance to prevent it from leaking. Apart from that, they have to make a drainage pipes and tanks for rainwater that pass-through waste disposal thus not going down to fresh water hence goes to streamed leached collector. Waste that put up and up in landfill produced an ammoniac gas, which will be very stinky and not good for health and safety. This gas is source of explosion on the landfill. So, the very important protection is to make a gas piping scheme. If the landfill already full, it needed to be closed with clay soil layer and synthetic substance once again. Furthermore, former landfill area can be used for recreation and leisure without any worry of the cause effect from previous landfill.