U.S. EPA today proposed scaling back renewable fuel targets for the first time since Congress passed the national biofuel mandate in 2007. The agency proposal would require that refiners blend 15.21 billion gallons of renewable fuels into petroleum-based gasoline and diesel next year. Of that, 13.01 billion gallons is to come from conventional ethanol and 2.2 billion gallons from advanced biofuels that do not use corn starch as an input.