If the Administrator has not made a rule under
section 2605(a) of this title immediately effective (as authorized by
section 2605(d)(3)(A)(i) of this title) with respect to an imminently hazardous chemical substance or mixture, the Administrator shall commence in a district court of the United States with respect to such substance or mixture or article containing such substance or mixture a civil action described in subparagraph (A), (B), or (C) of paragraph (1).