Ash Monofill Landfills
Bottom Ash means the ash residue remaining after combustion of solid waste or solid waste in combination with fossil fuel in a solid waste incinerator that is discharged through and from the grates, combustor or stoker.
Combined ash means the mixture of bottom ash and fly ash.
Fly ash means the ash residue from the combustion of solid waste or solid waste in combination with fossil fuel that is entrained in the gas stream of the solid waste incinerator and removed by the air pollution control equipment.
Ash Monofill Landfills in New York State
Approximately one fifth of the ash (bottom, fly or combined) from New York State's municipal waste combustion facilities is disposed of at the two ash monofill landfills operating in New York State, both of which are located on Long Island. The minimum liner required for an ash monofill landfill is a single composite liner with a leachate collection and removal system.