E15

Through regulation, the Clean Air Act specifically defines what can be considered transportation fuel. In order to change the fuel mix from E10 to E15, the formal petition with accompanying public signatures was filed in March 2009. That formal petition, dubbed the Green Jobs Waiver, can be read in its entirety here, and the formal application, appended with supporting documentation, can be read here. The petition noted that Congress had passed legislation designed to expand the country's domestic, renewable fuels industry, but by capping ethanol's volume in the fuel supply at 10 percent, the regulation prevented the U.S. ethanol industry from meeting the Congressional targets as identified in the Renewable Fuels Standard... The U.S. Environmental Protection Agency approved the use of E15 (a blend of up to 15 percent ethanol with gasoline) in response to a formal petition. While the E15 petition goes through further processing for application, existing regulation caps the permissible..