MEIC v. DEQ
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NorthWestern Corporation and the Montana Department of Environmental Quality (DEQ) appealed a District Court order vacating an air quality permit granted to NorthWestern for a natural-gas-fueled power plant near Laurel, Montana. The District Court found DEQ's analysis under the Montana Environmental Policy Act (MEPA) inadequate regarding the project's lighting impacts and greenhouse gas emissions.
The Thirteenth Judicial District Court vacated the permit, ruling that DEQ's noise analysis was not arbitrary or capricious but failed to take a "hard look" at the facility's lighting impacts and greenhouse gas emissions. The court also found that DEQ did not comply with MEPA requirements in its environmental assessment (EA) and remanded the EA to DEQ for further analysis.
The Supreme Court of the State of Montana reviewed the case. It affirmed the District Court's ruling that DEQ's noise analysis was adequate but agreed that DEQ failed to properly analyze the lighting impacts. The Supreme Court also held that DEQ must analyze greenhouse gas emissions within Montana as part of its MEPA review, despite the absence of specific regulatory standards for greenhouse gases under the Clean Air Act of Montana.
However, the Supreme Court reversed the District Court's vacatur of the permit, citing the need for specific findings under § 75-1-201(6)(c)(ii), MCA, before granting such equitable relief. The case was remanded to DEQ for further MEPA analysis in accordance with the Supreme Court's opinion, with the permit reinstated pending this additional review.
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