Landfill means a disposal facility or part of a facility where hazardous waste is placed in or on land and which is not a pile, a land treatment facility, a surface impoundment, an underground injection well, a salt dome formation, a salt bed formation, an underground mine, a cave, or a corrective action management unit.
Landfill cell means a discrete volume of a hazardous waste landfill which uses a liner to provide isolation of wastes from adjacent cells or wastes. Examples of landfill cells are trenches and pits.
Landfill Gas means any gas derived through any biological process from the decomposition of waste buried within a waste disposal site.
Sanitary landfill means a disposal facility for solid waste so located, designed and operated that it
Properly closed sanitary landfill facility means a sanitary