Wash. Admin. Code § 284-13-960
Each derivative instrument must be:
[Statutory Authority: RCW 48.020.60 [48.02.060], 48.13.171 and 48.13.091. WSR 14-21-106 (Matter No. R 2014-05), § 284-13-960, filed 10/15/14, effective 11/15/14.]