Wash. Admin. Code § 246-337-015
A licensee must provide one or more of the following types of services in the RTF:
[Statutory Authority: RCW 71.12.670, 71.12.684 and 2017 c 263. WSR 19-02-036, § 246-337-015, filed 12/24/18, effective 1/1/19. Statutory Authority: RCW 71.12.670. WSR 18-06-092, § 246-337-015, filed 3/6/18, effective 4/16/18. Statutory Authority: Chapter 71.12 RCW. WSR 05-15-157, § 246-337-015, filed 7/20/05, effective 8/20/05.]