1. Timeline for PM2.5 requirements in Fairbanks North Star Borough of Alaska (a) Definitions In this section: (1) Administrator The term Administrator means the Administrator of the Environmental Protection Agency. (2) Serious Area The term Serious Area means an area reclassified as a Serious Area with respect to PM2.5 under section 188(b) of the Clean Air Act ( 42 U.S.C. 7513(b) ). (b) Timeline Notwithstanding subpart 4 of part D of title I of the Clean Air Act ( 42 U.S.C. 7513 et seq.), sections 51.1003 and 51.1004 of title 40, Code of Federal Regulations, or any other provision of law, the following shall apply with respect to the attainment of the 2006 national ambient air quality standard for PM2.5 under the Clean Air Act ( 42 U.S.C. 7401 et seq.) in the Fairbanks North Star Borough in the State of Alaska under section 81.302 of title 40, Code of Federal Regulations (as in effect on the date of enactment of this Act): (1) The deadline for the submission of a Serious Area implementation plan under section 189(b)(1) of the Clean Air Act ( 42 U.S.C. 7513a(b)(1) ) shall be June 30, 2021. (2) The Serious Area attainment date under section 188(c)(2) of the Clean Air Act ( 42 U.S.C. 7513(c)(2) ) shall be— (A) if the Administrator does not grant an extension under section 188(e) of that Act ( 42 U.S.C. 7513(e) ), as expeditiously as practicable, but not later than December 31, 2023