They also warned that heavy metals could leak into the Oslofjord, The Local reported.
“I doubt anyone wants to live there,” he told Swedish newspaper Dagens Industri. ”There are reports of explosions on the island, something that may happen due to the activities that take place there,” said Per-Erik Schulze, a marine biologist with Friends of the Earth Norway environmentalist group.
Fly ash, which must be filtered from incinerator smoke before it can be released into the environment, contains dangerous dioxins and furans, as well as high levels of heavy metals such as lead, cadmium, copper and zinc.
Despite Sweden's heavy reliance on incineration, there is nowhere in the country where municipalities and environmental contractors can dispose of the most toxic ash.