Gulf Coast gasoline strengthened as Valero Energy Corp. reported emissions at the Port Arthur refinery in Texas.
There was no material impact to production associated with the emission, Bill Day, a company spokesman in San Antonio, said in an e-mailed statement.
The company was investigating the source of the release, according to a filing with the National Response Center.
The discount for reformulated, 87-octane gasoline, or RBOB, on the Gulf Coast narrowed 2.75 cents to 24.25 cents a gallon versus futures traded on the New York Mercantile Exchange at 12:04 p.m., according to data compiled by Bloomberg. Prompt delivery fell 5.05 cents to $2.9822 a gallon.
The same fuel in New York Harbor widened its discount by 0.12 cent to 2.5 cents versus futures.