Regulation To Mitigate the Misfueling of Vehicles and Engines With Gasoline Containing Greater Than Ten Volume Percent Ethanol and Modifications to the Reformulated and Conventional Gasoline Programs

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EPA is proposing a regulatory program to help mitigate the potential for misfueling of certain engines, vehicles and equipment with gasoline containing greater than 10 volume percent ("vol%") ethanol up to 15 vol% ethanol (E15). This proposal is in conjunction with the Agency's partial waiver, pursuant to Clean Air Act section 211(f)(4), which allows for the introduction into commerce of gasoline- ethanol blends containing up to 15 vol% ethanol for use in model year 2007 and newer on-highway light-duty motor vehicles. The E15 waiver is limited in scope to a portion of the light-duty fleet, and the proposed misfueling mitigation program will help avoid the misfueling of all other engines, vehicles, and equipment with unapproved fuels. This proposed rule would require all E15 gasoline fuel dispensers to have a label if a retail station chooses to sell E15 and seeks comment on separate labeling requirements for fuel blender pumps and fuel pumps that dispense E85. Similar to the prohibition in section 211(f)(1), the proposed rule would prohibit the use of gasoline containing greater than 10 vol% ethanol in vehicles and engines not covered by the partial waiver for E15. In addition, the