EPA released a final rule on June 28, 2011, requiring gasoline sellers to label pumps containing fuel with more than 10 percent ethanol. Developed in conjunction with the Federal Trade Commission, the labels must indicate which pumps offer the E15 blend (15 percent ethanol) and warn customers about which vehicles are considered incompatible with E15, including older cars and light trucks, motorcycles and water craft, and other equipment that uses gasoline, such as lawn mowers and chain saws. The final rule is effective 30 days after publication in the Federal Register.