; and (B) by striking , and the provisions of clause (ii) of subsection (b)(1)(A) (relating to reductions of less than 15 percent) ; and (4) in paragraph (5) of subsection (e), by striking , if the State demonstrates to the satisfaction of the Administrator that— and all that follows through the end of the paragraph and inserting a period. (i) Plan revisions for milestones for particulate matter nonattainment areas Section 189(c)(1) of the Clean Air Act ( 42 U.S.C. 7513a(c)(1) ) is amended by inserting , which take into account technological achievability and economic feasibility, before and which demonstrate reasonable further progress . (j) Exceptional events Section 319(b) of the Clean Air Act ( 42 U.S.C. 7619(b) ) is amended— (1) in the subsection heading, by inserting or actions To mitigate wildfire risk after Events ; (2) in paragraph (1)— (A) in the paragraph heading, by striking Definition of exceptional event and inserting Definitions ; (B) in subparagraph (A), by redesignating clauses (i) through (iv), as subclauses (I) through (IV), respectively; (C) by striking (A) and all that follows through an event that— and inserting the following: (A) Exceptional event (i) In general The term exceptional event means an event that— ; (D) by amending clause (III) of subparagraph (A)(i), as redesignated, to read as follows: (III) is an event that is— (aa) a natural event; (bb) caused by a human activity that is intended to mirror the occurrence or reoccurrence of a natural event; or (cc) caused by a human activity that is unlikely to recur. ; (E) by striking subparagraph (B) and inserting the following: (ii) Exclusions In this subsection, the term exceptional event does not include— (I) ordinarily occurring stagnation of air masses; (II) meteorological inversions; or (III) air pollution relating to source noncompliance.