A layout of a typical landfill with supporting structures is shown in Figure 4 . This overview shows the supporting stations and structures of a landfill. The drawing is based on the structure of the North Wake County Landfill in Raleigh, North Carolina. This helps to reduce the amount of material in the landfill. Some of these materials are banned from landfills by law because they can be recycled.
Residents drop off waste at the landfill.
Large trucks transfer municipal solid wastes from all parts of the county to the landfill. As customers enter the site, their trucks are weighed at the scale house. Customers are charged tipping fees for using the site. These fees are used to pay for bonds or operation costs. Along the site, there are drop-off stations for materials that are not wanted or legally banned by the landfill.