1. Definitions In this Act: (1) Administrator The term Administrator means the Administrator of the Environmental Protection Agency. (2) Mid-level ethanol blend The term mid-level ethanol blend means an ethanol-gasoline blend containing greater than 10 and up to and including 20 percent ethanol by volume that is intended to be used in any conventional gasoline-powered motor vehicle or nonroad vehicle or engine. 2. Evaluation (a) In general The Administrator, acting through the Assistant Administrator of the Office of Research and Development at the Environmental Protection Agency, shall— (1) not later than 45 days after the date of enactment of this Act, enter into an agreement with the National Academy of Sciences to provide, within 18 months after the date of enactment of this Act, a comprehensive assessment of the scientific and technical research on the implications of the use of mid-level ethanol blends, comparing mid-level ethanol blends to gasoline blends containing 10 percent or 0 percent ethanol