TRAVERSE CITY, Mich. (AP) — A state agency’s decision to revise a Detroit-area steel plant’s air quality permit will allow the facility to continue emitting too much pollution, environmental organizations said Monday in a lawsuit.

The Sierra Club and several other groups are challenging the May ruling by the Michigan Department of Environmental Quality, which changed the permit for a Dearborn plant owned by Severstal. The Russian company announced Monday it is selling the plant to AK Steel of West Chester, Ohio.