Wash. Rev. Code § 35.86A.050
Any city of the first or second class may by ordinance create a parking commission for the purpose of establishing and operating off-street parking facilities.
Such parking commission shall consist of five members appointed by the mayor and confirmed by the city council, who shall serve without compensation but may be reimbursed for necessary expenses. One member of the parking commission shall be selected from among persons actively engaged in the private parking industry, if available.
Three of those first appointed shall be designated to serve for one, two, and three years respectively, and two shall be designated to serve four years. The terms for all subsequently appointed members shall be four years. In event of any vacancy, the mayor, subject to confirmation of the city council, shall make appointments to fill the unexpired portion of the term.
A member may be reappointed, and shall hold office until his or her successor has been appointed and has qualified. Members may be removed by the mayor upon consent of the city council.
RCW 35.86A.050