Where requested records contain matters which are exempted under 5 U.S.C. 552(b) but which matters are reasonably segregable from the remainder of the records, they shall be disclosed by the Office with deletions. To each such record, the Office shall attach a written justification for making deletions. A single such justification shall suffice for deletions made in a group of similar or related records. [45 FR 47112, July 14, 1980. Redesignated at 49 FR 28235, July 11, 1984, and further redesignated 56 FR 5744, Feb. 13, 1991]