The hearing officer may require that the parties submit to the hearing officer or board and to the other parties written statements containing: The names, addresses and qualifications of their respective opinion or expert wit-nesses: Any reports of the experts; and the nature of the testimony expected by the expert, by a date determined by the hearing officer and fixed sufficiently in advance of the hearing to permit the other interested parties to investigate such qualifications.
Wash. Admin. Code § 446-08-470
Order II, § 446-08-470, filed 11/22/74.