; and (B) attainment and maintenance of national ambient air quality standards; (2) the procedures and timelines of the Administrator for the disposition of petitions submitted under subsection (b) of section 179B of the Clean Air Act ( 42 U.S.C. 7509a ); (3) the total number of petitions received by the Administrator under that section ( 42 U.S.C. 7509a ) and, for each petition— (A) the date on which the petition was initially submitted to the Administrator; and (B) the date of final disposition by the Administrator; and (4) whether the Administrator recommends any statutory changes to facilitate the more efficient review and disposition of petitions submitted under that section ( 42 U.S.C. 7509a ).