; and (B) includes the following: (i) Partial Grant and Partial Denial of Clean Air Act Waiver Application Submitted by Growth Energy To Increase the Allowable Ethanol Content of Gasoline to 15 Percent; Decision of the Administrator published at 75 Fed. Reg. 68094 (November 4, 2010). (ii) Partial Grant of Clean Air Act Waiver Application Submitted by Growth Energy To Increase the Allowable Ethanol Content of Gasoline to 15 Percent; Decision of the Administrator published at 76 Fed. Reg. 4662 (January 26, 2011). (3) Exception Paragraph (1) shall not apply with respect to a waiver to the extent such waiver permits or authorizes the introduction into commerce of gasoline— (A) that is described in paragraph (2)(A); and (B) that is, on or before the date of enactment of this Act— (i) registered in accordance with section 211(b) of the Clean Air Act ( 42 U.S.C. 7545(b) ); and (ii) lawfully sold in the United States. (c) Study Not later than 2 years after the date of enactment of this Act, the Administrator of the Environmental Protection Agency shall conduct, and submit to Congress the results of, a comprehensive study on— (1) the effects of the introduction into commerce of an ethanol-gasoline blend described in subsection (b)(2)(A) on consumer products, including— (A) onroad and nonroad vehicles; (B) nonroad engines (such as lawn mowers); and (C) any other applicable gasoline-powered vehicles, engines, and devices; (2) the impact of an ethanol-gasoline blend described in subsection (b)(2)(A) on— (A) engine performance of conventional gasoline-powered onroad and nonroad vehicles and nonroad engines; (B) emissions from the use of the blend; and (C) materials compatibility and consumer safety issues associated with the use of such blend (including the identification of insufficient data or information for some or all of such vehicles and engines with respect to each of the issues described in this subparagraph and subparagraphs (A) and (B))