Wash. Rev. Code § 87.03.655
The secretary of the board of directors shall cause a notice of the filing of the petition to be published for at least two weeks in a newspaper of general circulation in the county where the office of the board of directors is situated, and if any portion of the territory to be excluded lies within another county or counties, then the notice shall be so published in a newspaper of general circulation within each of the counties. The notice shall state the filing of the petition, the names of the petitioners, a description of the lands, or the name and number of the former district, mentioned in the petition, and the prayer of the petition; and it shall notify all persons interested in or that may be affected by the change of the boundaries of the district to appear at the office of the board at a time named in the notice, and show cause in writing, if any they have, why the change of the boundaries of the district, as proposed in the petition, should not be made. The time to be specified in the notice at which they shall be required to show cause shall be the regular meeting of the board next after the expiration of the time for the publication of the notice.
RCW 87.03.655
Official paper for publication: RCW 87.03.020.