State regulators have given the developers of a $30-million biofuel project in the City of LeSueur an environmental exemption. The Minnesota Municipal Power Agency won’t need an environmental impact statement in order to move forward with the project. The Minnesota Pollution Control Agency’s Citizen’s Board granted the exemption on Tuesday. The plant still needs air and disposal system permits. The facility’s digester will turn agricultural waste into biogas to fuel electrical generators. The plant will also produce liquid fertilizer for farmers and solid pellets for coal-fired power plants.