Wash. Rev. Code § 53.36.070
Any port district organized under the laws of this state shall, in addition to the powers otherwise provided by law, have the power to raise revenue by the levy and collection of an annual tax on all taxable property within such port district of not to exceed forty-five cents per thousand dollars of assessed value against the assessed valuation of the taxable property in such port district, for dredging, canal construction, or land leveling or filling purposes, the proceeds of any such levy to be used exclusively for such dredging, canal construction, or land leveling and filling purposes: PROVIDED, That no such levy for dredging, canal construction, or land leveling or filling purposes under the provisions of RCW 53.36.070 and 53.36.080 shall be made unless and until the question of authorizing the making of such additional levy shall have been submitted to a vote of the electors of the district in the manner provided by law for the submission of the question of making additional levies in school districts of the first class at an election held under the provisions of RCW 29A.04.330 and shall have been authorized by a majority of the electors voting thereon.
RCW 53.36.070
Severability-Effective dates and termination dates-Construction-1973 1st ex.s. c 195: See notes following RCW 84.52.043.