Practice before the board in formal proceedings is limited to the following:
Wash. Admin. Code § 456-09-210
Statutory Authority: RCW 82.03.170. 05-13-141, § 456-09-210, filed 6/21/05, effective 8/1/05; 91-07-038 (Order 91-01), § 456-09-210, filed 3/15/91, effective 4/15/91. Statutory Authority: RCW 82.03.170, 34.05.250, 82.03.140 and 82.03.160. 90-11-105, § 456-09-210, filed 5/22/90, effective 6/22/90. Statutory Authority: RCW 82.03.170. 89-10-056 (Order 89-02), § 456-09-210, filed 5/2/89.