PDFWAC 296-800-340
Protecting the identity of the source of confidential information.
(1) The department must not reveal the source of information when a promise has been made to keep the identity of the source confidential.
(2) The department must not disclose information that would reveal the source's identity, whenever a department file contains an investigative report or information from a source under a promise of confidentiality.
(a) The contents of an investigative report may be withheld only to the extent necessary to conceal the identity of the source.
(b) When information is withheld, the records officer must give a general characterization of the information withheld, but must not reveal the identity of the information's source.