The Area Method
The Area Method is used when the terrain is unsuitable for the excavation of trenches in which to place the solid wastes. The filling operation usually is started by building an earthen bund against which wastes are placed in thin layers and compacted as the fill progresses untill the thickness of the compacted wastes reaches a height of 2 to 3 m at the end of day’s operation a 150 mm to 300 mm layer of cover material is placed over the compacted fill. The cover material must be hauled in by truck or earth-moving equipment from adjacent land or from borrow-pit areas. A final layer of cover material is used when the fill reaches the final design height.