; and (2) not later than 30 days after receiving the results of the assessment under paragraph (1), submit a report to the Committee on Science, Space, and Technology of the House of Representatives and the Committee on Environment and Public Works of the Senate on the findings of the assessment, together with the agreement or disagreement of the Administrator with each of its findings. (b) Contents The assessment performed under subsection (a)(1) shall include the following: (1) An evaluation of the short-term and long-term environmental, safety, durability, and performance effects of the introduction of mid-level ethanol blends on onroad, nonroad, and marine engines, onroad and nonroad vehicles, and related equipment. Such evaluation shall consider the impacts of qualifying mid-level ethanol blends or blends with higher ethanol concentrations as a certification fuel. Such evaluation shall include a review of all available scientific evidence, including that relied upon by the Administrator and published at 75 Fed. Reg. 68094 et seq. (November 4, 2010), 76 Fed. Reg. 4662 et seq. (January 26, 2011), and 76 Fed. Reg. 44406 et seq. (July 25, 2011), and identify gaps in understanding and research needs related to— (A) tailpipe emissions; (B) evaporative emissions; (C) engine and fuel system durability; (D) onboard diagnostics; (E) emissions inventory and other modeling effects; (F) materials compatibility; (G) operability and drivability; (H) fuel efficiency; (I) fuel economy; (J) knock resistance; (K) consumer education and satisfaction; (L) cost effectiveness for the consumer; (M) catalyst durability; and (N) durability of storage tanks, piping, and dispensers for retail. (2) An identification of areas of research, development, and testing necessary to— (A) ensure that existing motor fuel infrastructure is not adversely impacted by mid-level ethanol blends, including an examination of potential impacts of mid-level ethanol blends on metal, plastic, rubber, or any other materials used in pipes or storage tanks