Judicial review— Notwithstanding
section 706 of title 5, United States Code, a court reviewing any agency action of the Secretary, the Chief of Engineers, or the Administrator that is affected by this section shall decide de novo all relevant questions of law, including the interpretation of constitutional and statutory provisions, and rules made. If the reviewing court determines that a statutory or regulatory provision relevant to its decision contains a gap or ambiguity, the court shall not interpret that gap or ambiguity as an implicit delegation of legislative rule making authority and shall not rely on such gap or ambiguity as a justification either for interpreting agency authority expansively or for deferring to any interpretation of the Secretary, the Chief of Engineers, or the Administrator on the question of law. Notwithstanding any other provision of law, this subsection shall apply in any action for judicial review of such an agency action authorized under any provision of law. No law may exempt any civil action for review of such an agency action from the application of this subsection except by specific reference to this subsection.