(July 25, 2018, 2:13 PM EDT) -- HOUSTON — E.I. du Pont de Nemours & Co. on July 23 agreed to pay $3.1 million to the Environmental Protection Agency to settle allegations that it violated the Clean Air Act (CAA) when it accidentally released methyl mercaptan (MeSH) at the company’s chemical plant in La Porte, Texas, causing the death of four employees and injuring six others (United States v. E.I. du Pont de Nemours and Company, No. 18-2545, S.D. Texas)....