Once the environmental impact study is complete, the permits are granted and the money has been raised, construction begins. First, access roads to the landfill site must be built if they do not already exist. These roads will be used by construction equipment, sanitation services and the general public. After roads have been built, then the landfill can be excavated. In the North Wake County Landfill, the landfill began 10 feet below the road surface.