BOSTON - A First Circuit U.S. Court of Appeals panel, which included a U.S. Supreme Court justice sitting by designation, on Aug. 3 held that the U.S. Environmental Protection Agency did not act arbitrarily or capriciously in reducing the effluent limits of nitrogen, phosphorus and aluminum a sewage treatment plant in Massachusetts could discharge into the Blackstone River, which ultimately flows into Narragansett Bay (Upper Blackstone Water Pollution Abatement District v. United States Environmental Protection Agency, No. 11-1474, Conservation Law Foundation Inc. v. Upper Blackstone Water Pollution Abatement District, No. 11-1610, 1st Cir.; 2012 U.S. App. LEXIS 16145).