Wash. Admin. Code § 388-101D-0115
(1) The service provider must ensure the following instruction and support services staff meet the training requirements of this chapter:
[WSR 16-14-058, recodified as § 388-101D-0115, filed 6/30/16, effective 8/1/16. Statutory Authority: RCW 71A.12.030 and [71A.12].080. WSR 12-02-048, § 388-101-3302, filed 12/30/11, effective 1/30/12. Statutory Authority: RCW 71A.12.080, chapter 74.39A RCW. WSR 10-16-084, § 388-101-3302, filed 7/30/10, effective 1/1/11.]