The Ombudsman shall strictly maintain the confidentiality of any public record or part of a public record submitted for review under this chapter, and may not disclose any such public record or part of a public record to another party without the written permission of the custodian. The Ombudsman shall take reasonable steps to segregate confidential records in such a way that their confidence is maintained. Upon the conclusion of a mediation involving the Ombudsman’s review of disputed public records, the Ombudsman shall return or destroy the disputed public records.