[Statutory Authority: RCW 28A.41.170(2). WSR 90-01-141 (Order 22), § 392-129-020, filed 12/20/89, effective 1/20/90. Statutory Authority: RCW 28A.41.170. WSR 81-21-002 (Order 81-26), § 392-129-020, filed 10/8/81; WSR 80-04-046 (Order 80-3), § 392-129-020, filed 3/21/80, effective 5/2/80; Order 7-75, § 392-129-020, filed 12/22/75. Formerly WAC 392-14-040.]