The Supreme Court last week declined to review a lower court ruling that overturned nearly $1.5 billion in compensatory and putative damages against Exxon Mobil for contaminating groundwater in Maryland with the chemical MTBE, which is used in gasoline. In the 2011 case of Albright v. Exxon Mobil, 466 Maryland residents and businesses won the damages in county court, but a Maryland appeals court rejected all but a small portion of the damages related to contamination above Maryland’s 20 ppb MTBE maximum contaminant level.