RICHMOND, Maine — The Environmental Protection Agency has been put on notice that it’ll be sued over the disruption of Maine’s native run of alewives on the St. Croix River.

Friends of Merrymeeting Bay and two individuals blame the EPA for failing to strike down a 2008 state law that eliminated access to spawning habitat.

The law was intended to end a dispute over plans to reintroduce alewives to the upper portions of the St. Croix River in eastern Maine. It opened only the Woodland dam on the lower part of the river. The original plan called for opening that and the Grand Falls dam farther upstream.

Friends of Merrymeeting Bay says the decision prevents alewives from being restored because the fish cannot reach their natural spawning area.