Wash. Rev. Code § 89.30.457
Said notice shall state that all or part of the lands included in the reclamation district (naming it) are proposed to be organized as a general improvement district for the purpose of making a certain improvement (stating its nature generally) or acquiring certain property or rights (naming the same) as the case may be, that the lands within the proposed improvement district (where part only of the lands in the reclamation district are to be included, such part shall be described in township, ranges and where necessary in lesser legal subdivisions) are to be assessed to pay for said improvement, or property or rights therein; that a report containing further information concerning the matter is on file in the office of the board of the reclamation district and may be inspected at any time, during business hours, by any interested person; that a hearing thereon will be held (stating the time and place); that all persons interested may appear before the board at the time and place named in the notice and show cause, if any they have, why the proposed district should not be organized, the proposed project carried out, and said lands assessed for that purpose. Said notice shall be signed by the secretary of the reclamation district.
RCW 89.30.457