49 U.S. Code § 47171 - Expedited, coordinated environmental review process
 So in original. Probably should be “4321”.
The National Environmental Policy Act of 1969, referred to in subsecs. (a)(1), (b)(2)(B)(ii), and (
Executive Order No. 13274, referred to in subsec. (m), is set out as a note under section 301 of this title.
Subchapter applicable only to fiscal years beginning after Sept. 30, 2003, except as otherwise specifically provided, see section 3 of Pub. L. 108–176, set out an Effective Date of 2003 Amendment note under section 106 of this title.