Wash. Rev. Code § 85.05.440
Whenever in the judgment of the commissioners of any diking district, it is advisable so to sell real or personal property, the board of commissioners of such district shall pass a resolution declaring its intention to make such sale, describing the property to be sold and stating the terms of such sale. The resolution shall set a date upon which the board shall meet, to determine whether or not such sale shall be made. Thereafter a copy of such declaratory resolution and a notice of hearing thereon shall be posted under the direction of the board, in three public places in such district at least ten days before the date of hearing. The notice shall state the time and place of hearing, describe the property to be sold and the terms of the proposed sale. In addition a copy of such resolution and of such notice of hearing thereon shall be published twice, at least two weeks prior to such proposed sale in some newspaper qualified for legal publication in accordance with the provisions of chapter 65.16 RCW, of general publication in the county in which such diking district is located.
RCW 85.05.440