Wash. Admin. Code § 296-850-175
(2) Compliance dates. All obligations of this standard commence and become enforceable on December 12, 2018, except:
[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060, and chapter 49.17 RCW. WSR 18-17-156, § 296-850-175, filed 8/21/18, effective 12/12/18.]