804.5—Grounds on which meetings may be closed or information may be withheld.

Except in a case where the Board finds that the public interest requires otherwise, a meeting may be closed and information pertinent to such meeting otherwise required by §§ 804.6, 804.7, and 804.8 to be disclosed to the public may be withheld if the Board properly determines that such meeting or portion thereof or the disclosure of such information is likely to:
(c) Disclose matters specifically exempted from disclosure by statute (other than 5 U.S.C. 552 ): Provided, That such statute (1) requires that the matters be withheld from the public in such a manner as to leave no discretion on the issue, or (2) establishes particular criteria for withholding or refers to particular types of matters to be withheld;