The declaration of nonnavigability under subsection (a) applies only to those parts of the area described in subsection (b) that are or will be bulkheaded, filled, or otherwise occupied by permanent structures and does not affect the applicability of any Federal statute or regulation applicable to such parts the day before November 8, 2007, including sections
401 and
403 of this title, section
1344 of this title, and the National Environmental Policy Act of 1969 (
42 U.S.C.
4321 et seq.).