 Furthermore, most landfills are monitored for at least 3 to 4 decades to ensure that no leachate or landfill gases escape into the community surrounding the landfill site.In contrast, bioreactor landfill are expected to decompose to level that does not require monitoring in less than a decade.Hence, the landfill land can be used for other purposes such as reforestation or parks, depending on the location at an earlier date.