(August 19, 2015, 7:40 AM EDT) -- CINCINNATI — Fifteen industry and environmental advocacy groups moved to intervene in the Clean Water Rule multicircuit petition litigation between Aug. 12 and 14, according to the docket in the Sixth Circuit U.S. Court of Appeals (In Re Murray Energy Corporation v. United States Environmental Protection Agency, et al., No. 15-3751, 6th Cir.)....