Wash. Admin. Code § 220-620-060
Statutory Authority: RCW 75.08.080 and 75.52.050. 99-11-004 (Order 99-44), § 220-130-070, filed 5/6/99, effective 6/6/99. Statutory Authority: RCW 75.50.100 and 75.52.035. 98-02-017 (Order 97-245), § 220-130-070, filed 12/30/97, effective 1/30/98. Statutory Authority: RCW 75.52.035. 89-03-015 (Order 89-02), § 220-130-070, filed 1/6/89.