Wash. Rev. Code § 36.56.130
(1) A county that has assumed the transportation functions of a metropolitan municipal corporation may:
(c)
(ii) For the purposes of (c)(i) of this subsection, county-assumed metropolitan municipal corporations may own, operate, or own and operate pipelines or dispensing facilities for green electrolytic hydrogen or renewable hydrogen for end use as a transportation fuel if all such pipelines and dispensing facilities are:
(4) The definitions in this subsection apply throughout this section unless the context clearly requires otherwise.
[ 2023 c 234 s 2.]