Following the hearing, if the legislative body determines to effect the annexation, they shall do so by ordinance. Subject to RCW 35.02.170, the ordinance may annex all or any portion of the proposed area but may not include in the annexation any property not described in the petition. Upon passage of the annexation ordinance a certified copy shall be filed with the board of county commissioners of the county in which the annexed property is located.

Legislative finding, intent—1975 1st ex.s. c 220: See note following RCW 35.02.170.