Wash. Rev. Code § 47.29.090
(1) Subject to subsection (2) of this section, the commission may:
(2) Before undertaking any of the activities contained in subsection (1) of this section, the commission must have:
(b) Adopted rules specifying procedures for the proper solicitation, acceptance, review, and evaluation of projects, which procedures must include:
[ 2005 c 317 s 9.]