Nordic Aquafarms’ salmon farm project in Belfast is moving back before the Department of Environmental Protection for reconsideration of permits they had previously approved.

According to the Portland Press Herald, the $500 million project is facing multiple lawsuits and appeals, despite having the support of most city officials.

Upstream Watch, a group calling for the appeal of the farm’s permits, cites changed circumstances in land ownership and information regarding the impact of the plant. The group claims the farm would threaten the water quality of the Belfast Bay and Little River. They also say construction of the farm would require the destruction of “carbon sequestering forest and wetlands“.

One lawsuit against the company disputes ownership of the land the company would build on. Nordic had planned to run pipes used for pumping water to the bay through land the city of Belfast claimed to own. In March, however, the Maine Supreme Judicial Court ruled that the land was owned by neighboring couple Jeffrey R. Mabee and Judith Grace, who oppose construction on their land.

The DEP is expected to reach a decision regarding the permits later this month, but Nordic says it could take years before the courts allow them to move forward with their plans and have suspended their permits in the meantime.