Seeing a physical blend wall that creates a gap between the amounts of corn-based ethanol the industry can produce and can be absorbed in the gasoline market, EPA has proposed reducing the ethanol volume required. RFS Position Reinforced Seeing a physical blend wall that creates a gap between the amounts of corn-based ethanol the industry can produce and can be absorbed in the gasoline market, EPA has proposed reducing the ethanol volume required under the renewable fuels standard (RFS) by 14 percent in 2014. The agency has reportedly received 14,000 comments from the public from all sides of the issue. Thirty-one U.S. senators have written EPA demanding that the 2014 biofuel mandate be established at the statutory maximum. Today, EPA Adm...