Wash. Admin. Code § 246-296-060
(1) The department shall:
[Statutory Authority: RCW 70.119A.170, 40 C.F.R. 35.352 and 35.3535. WSR 18-21-021, § 246-296-060, filed 10/4/18, effective 11/4/18. Statutory Authority: RCW 70.119A.170 as amended by 2016 c 111. WSR 16-14-086, § 246-296-060, filed 7/5/16, effective 8/5/16. Statutory Authority: RCW 70.119A.170 and Federal Safe Drinking Water Act, H.R. 1452. WSR 12-01-077, § 246-296-060, filed 12/19/11, effective 2/1/12. Statutory Authority: RCW 70.119A.170. WSR 01-21-137, § 246-296-060, filed 10/24/01, effective 11/24/01.]