The new plant will replace the Bellozanne incinerator
A protected area of Jersey's coastline could be damaged by the island's new waste plant, a States report has said.
A panel found the environmental impact of the incinerator at La Collette had not been properly investigated during the planning process.
It claims pollution could compromise marine life in an area protected by an international Ramsar Convention.
But the Planning and Environment Department disagreed with the scrutiny report's findings.
The States agreed in 2008 to build the £106m energy from waste plant on reclaimed land on the island's south-east coast.
The government's Environment Scrutiny Panel has spent the past year gathering evidence about the plant before releasing its report.
According to the panel there were flaws in the planning and building process.
It said for that reason Jersey may have failed to meet its obligations under the Ramsar Convention.
But Jersey's Planning and Environment Department said it did not accept many of the report's conclusions.
The waste plant will have what it described as "impacts", but they will be properly assessed, monitored and controlled, the department said.
The incinerator is run by Transport and Technical Services (TTS).
The TTS minister, Constable Mike Jackson, said "No one likes to pay lip service to environmental concerns and they are of great concern to me.
"I think in any project of this size, remembering this is an enormous project for Jersey, there's always room for improvement.
"The report brings out elements where there is room for improvement."
The energy from waste plant is due to be finished by June 2011.