Mr Dorey said Les Vardes quarry could be used as landfill
The idea of landfill being used to solve Guernsey's waste problem has been raised again by a former member of the island's Board of Administration.
Geoff Dorey said using Les Vardes quarry as a landfill could remove the need for the planned £93m incinerator.
He said: "Landfill in quarries is a tried and tested method of waste disposal in Guernsey."
The States said an incinerator could deal with 45,000 tonnes of waste a year and could pay for itself over 25 years.
Mr Dorey added: "I think it is a commonsense solution especially if you look at it from the economic point of view.
"Even if it cost £10m to set it up, which I don't think it would, you're looking at a saving of £80m or more and a vastly reduced gate fees in the future."
The States are due to sign a contract with preferred contractor Suez Environment in January, despite continued lobbying for alternative solutions to the island's waste problem.
Les Vardes quarry is currently owned by Ronez, a supplier of materials including concrete and road surfacing material.
During the 2004 machinery of government review the Board of Administration's responsibilities were spread across several of the ten new States departments with the majority falling under the Public Services Department's mandate.