The [PRIVACT] includes two sets of provisions that allow federal agencies to claim exemptions from certain requirements in the statute. In certain circumstances, these provisions allow agencies to promulgate regulations to exempt a system of records from select provisions of the [PRIVACT]. At a minimum, organizations’ [PRIVACT] exemption regulations include the specific name(s) of any system(s) of records that will be exempt, the specific provisions of the [PRIVACT] from which the system(s) of records is to be exempted, the reasons for the exemption, and an explanation for why the exemption is both necessary and appropriate.