Housing developers have been refused a permit to use waste for a planned development in Trearddur Bay.
Eaden Homes Limited wanted to raise land at Morfa by depositing 20,000 cubic metres of waste – but Natural Resources Wales said their plans were inadequate and failed to meet legal requirements.
Officers at the environmental authority said there were also concerns that raising the land would increase the risk of flooding in the area.
NRW operations manager David Powell said: ”We only issue environmental permits for the permanent deposit of waste when a company’s waste recovery plan meets the legal test required. We will only issue a permit if we are confident that the activity will not result in any environmental problems.”
”Having assessed this proposal thoroughly, we do not believe the activity could be carried out in this location without harming the environment.”
The developers have not commented on the decision.