Marathon Petroleum Corp. shut a unit at its 460,000-barrel-a-day Garyville refinery in Louisiana after a leak discharged gas oil that may contain hydrogen sulphide gas, according to a government filing.
A leak developed in one of the refinery's operating units and was discovered at 5:55 p.m. local time Dec. 15, the filing with the U.S. National Response Center showed. The amount of gas released with the fuel was unknown, according to the filing.
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U.S. refineries must notify the National Response Center if they release hazardous substances in excess of reportable quantities, according to the Comprehensive Environmental Response, Compensation and Liability Act, known as Superfund.