Pursuant to 5 U.S.C. 552(b)(2), the following records are exempt from disclosure under FOIA:

(a) Records relating solely to internal personnel rules and practices, including memoranda pertaining to personnel matters such as staffing policies, and procedures for the hiring, training, promotion, demotion, or discharge of employees, and management plans, records, or proposals relating to labor-management relations.

(b) Records regarding:

(1) Internal matters of a relatively trivial nature that have no significant public interest, and

(2) Predominantly internal matters, the release of which would risk circumvention of a statute or agency regulation.