Upon receipt by the board of county commissioners of a determination by a majority of the review board favoring annexation of the proposed area that has been initiated by resolution pursuant to RCW
35.13.015 by the city or town legislative body, the board of county commissioners, or the city or town legislative body for any city or town within an urban growth area designated under RCW
36.70A.110, shall fix a date on which an annexation election shall be held, which date will be not less than thirty days nor more than sixty days thereafter.