40 CFR 1601.31: Preservation of records pertaining to requests under this part.

The CSB must preserve all correspondence pertaining to the requests that it receives under this subpart, as well as copies of all requested records, until disposition or destruction is authorized pursuant to title 44 of the United States Code and the General Records Schedule 4.2 of the National Archives and Records Administration. The CSB must not dispose of or destroy records while they are the subject of a pending request, appeal, or lawsuit under the FOIA.