The Minnesota Court of Appeals reversed a decision by Minnesota utility regulators who had approved the environmental impact statement for Enbridge Energy’s Line Three pipeline. The Minnesota Court of Appeals ruled Monday the environmental impact statement is inadequate because it doesn’t address the possibility of an oil spill into the Lake Superior watershed. The state Public Utilities Commission last year approved the review performed by the Minnesota Department of Commerce. Several environmental groups and American Indian tribes appealed the commission’s approval. Enbridge’s $2.6-billion project calls for the construction of a new oil pipeline to replace the aging Line Three. The pipeline would carry Canadian oil across northern Minnesota to Superior, Wisconsin.