Wash. Admin. Code § 220-22-410
Statutory Authority: RCW 75.08.080. 98-05-043, § 220-22-410, filed 2/11/98, effective 3/14/98; 84-08-014 (Order 84-24), § 220-22-410, filed 3/27/84; 82-14-056 (Order 82-72), § 220-22-410, filed 7/1/82; 80-07-017 (Order 80-45), § 220-22-410, filed 6/11/80; Order 76-148, § 220-22-410, filed 12/2/76.