The jurisdiction of the county annexation review board shall be invoked upon the filing with the board of a resolution for an annexation election as provided in RCW 35A.14.015, or of a petition for an annexation election as provided in RCW 35A.14.030, and the board shall proceed to hold a hearing, upon notice, all as provided in RCW 35A.14.040. A verbatim record shall be made of all testimony presented at the hearing and upon request and payment of the reasonable costs thereof, a copy of the transcript of such testimony shall be provided to any person or governmental unit. The board shall make and file its decision, all as provided in RCW 35A.14.050, insofar as said section is applicable to the matter before the board. Dissenting members of the board shall have the right to have their written dissents included as part of the decision. In reaching a decision on an annexation proposal, the county annexation review board shall consider the factors affecting such proposal, which shall include but not be limited to the following:
The county annexation review board shall determine whether the proposed annexation would be in the public interest and for the public welfare. The decision of the board shall be accompanied by the findings of the board. Such findings need not include specific data on all the factors listed in this section, but shall indicate that all such factors were considered.
RCW 35A.14.200