Wash. Admin. Code § 220-52-050
Statutory Authority: RCW 77.04.020, 77.12.045, and 77.12.047. 12-04-034 (Order 12-11), § 220-52-050, filed 1/27/12, effective 2/27/12. Statutory Authority: RCW 77.12.047. 10-05-059, § 220-52-050, filed 2/11/10, effective 3/14/10; 03-05-060 (Order 03-30), § 220-52-050, filed 2/18/03, effective 3/21/03; 00-17-145 (Order 00-165), § 220-52-050, filed 8/22/00, effective 9/22/00. Statutory Authority: RCW 75.08.080. 99-01-154 (Order 98-257), § 220-52-050, filed 12/22/98, effective 1/22/99; 94-12-009 (Order 94-23), § 220-52-050, filed 5/19/94, effective 6/19/94; 93-15-051, § 220-52-050, filed 7/14/93, effective 8/14/93; 87-23-006 (Order 87-187), § 220-52-050, filed 11/6/87; 84-08-014 (Order 84-24), § 220-52-050, filed 3/27/84; 83-04-025 (Order 83-04), § 220-52-050, filed 1/27/83; 82-03-045 (Order 82-6), § 220-52-050, filed 1/19/82; 80-13-064 (Order 80-123), § 220-52-050, filed 9/17/80; 79-02-053 (Order 79-6), § 220-52-050, filed 1/30/79; Order 76-152, § 220-52-050, filed 12/17/76; Order 76-26, § 220-52-050, filed 1:45 p.m., 4/20/76; Order 1242, § 220-52-050, filed 8/7/75, effective 9/16/75; Order 1179, § 220-52-050, filed 11/19/74; Order 1112, § 220-52-050, filed 4/15/74; Order 945, § 220-52-050, filed 8/16/71; Order 807, § 220-52-050, filed 1/2/69, effective 2/1/69; subsections 1, 5, 6 from Orders 414 and 256, filed 3/1/60; subsection 2 from Orders 420 and 256, filed 3/1/60; subsection 3 from Order 525, filed 5/3/61; Orders 414 and 256, filed 3/1/60; subsection 7 from Order 525, filed 5/3/61.