(September 12, 2019, 10:36 AM EDT) -- BALTIMORE — A federal judge in Maryland on Sept. 4 partially granted and partially denied motions to dismiss a methyl tertiary butyl ether (MTBE) groundwater contamination case against multiple gasoline companies brought by the state of Maryland, on grounds that the state established causation for some, but not all, of its claims (Maryland v. Exxon Mobil Corp., et al., No. ELH-18-459, D. Md., 2019 U.S. Dist. LEXIS 150177)....