WAC 434-663-720. Preservation strategy

For an electronic image system containing public records with a retention period of ten years or longer or records containing archival information, one or more of the following preservation strategies must be employed: (1) Retain the original paper documents; (2) Microfilm the original documents; (3) Migrate optical media and magnetic media at least every ten years or sooner as is necessary to avoid technical obsolescence, loss of readability, and excessive read error rates; or (4) Record the electronic images on industry standard microfilm at the same density at which they were scanned.