A City of Chicago alderman has been pushing a new ordinance that would require most fueling stations in the city to offer the E-15 blend of 85 percent gasoline and 15 percent ethanol.
E15 Ethanol Blend to Become Common at the Pump
The U.S. Supreme Court rejected, on June 24, 2013, petitions to reconsider the federal appeals court for the District of Columbia ruling that allows the sale of gasoline blended with 15 percent ethanol (E15).