An employee who has information that the employee reasonably believes indicates the existence of an activity constituting:

(a) A possible violation of a rule or regulation of the Department;

(b) A possible violation of any noncriminal ethics statute or rule or regulation;

(c) Mismanagement, a gross waste of funds, or abuse of authority; or

(d) A substantial and specific danger to the public health and safety must immediately report this information to the employee's supervisor, any management official of the Department, or in the case of paragraph (c) of this section and this paragraph (d), directly to the Inspector General. This section does not cover employee grievances, equal employment opportunity complaints, classification appeals, or other matters for which a formal government-wide review system has been established by the Federal Government.