Wash. Admin. Code § 461-08-560
(1) The board shall, pursuant to RCW 90.58.180, issue a final decision on petitions for review arising out of the granting, denying or rescinding of a permit within one hundred eighty days of the following:
[Statutory Authority: RCW 90.58.175 and SHB 1314. WSR 97-19-063, § 461-08-560, filed 9/15/97, effective 10/16/97. Statutory Authority: RCW 90.58.175. WSR 96-15-002, § 461-08-560, filed 7/3/96 effective 8/3/96.]