The board shall review and approve, disapprove, or modify any of the actions set forth in RCW
36.93.090 when any of the following shall occur within forty-five days of the filing of a notice of intention:
(1) Three members of a five-member boundary review board or five members of a boundary review board in a county with a population of one million or more files a request for review: PROVIDED, That the members of the boundary review board shall not be authorized to file a request for review of the following actions:
(a) The incorporation of any special district or change in the boundary of any city, town, or special purpose district;
(b) The extension of permanent water service outside of its existing corporate boundaries by a city, town, or special purpose district if (i) the extension is through the installation of water mains of six inches or less in diameter or (ii) the county legislative authority for the county in which the proposed extension is to be built is required or chooses to plan under RCW
36.70A.040 and has by a majority vote waived the authority of the board to initiate review of all other extensions; or
(c) The extension of permanent sewer service outside of its existing corporate boundaries by a city, town, or special purpose district if (i) the extension is through the installation of sewer mains of eight inches or less in diameter or (ii) the county legislative authority for the county in which the proposed extension is to be built is required or chooses to plan under RCW
36.70A.040 and has by a majority vote waived the authority of the board to initiate review of all other extensions;
(2) Any governmental unit affected, including the governmental unit for which the boundary change or extension of permanent water or sewer service is proposed, or the county within which the area of the proposed action is located, files a request for review of the specific action;
(3) A petition requesting review is filed and is signed by:
(a) Five percent of the registered voters residing within the area which is being considered for the proposed action (as determined by the boundary review board in its discretion subject to immediate review by writ of certiorari to the superior court); or
(b) An owner or owners of property consisting of five percent of the assessed valuation within such area;
(4) The majority of the members of boundary review boards concur with a request for review when a petition requesting the review is filed by five percent of the registered voters who deem themselves affected by the action and reside within one-quarter mile of the proposed action but not within the jurisdiction proposing the action.
If a period of forty-five days shall elapse without the board's jurisdiction having been invoked as set forth in this section, the proposed action shall be deemed approved.
If a review of a proposal is requested, the board shall make a finding as prescribed in RCW
36.93.150 within one hundred twenty days after the filing of such a request for review. If this period of one hundred twenty days shall elapse without the board making a finding as prescribed in RCW
36.93.150, the proposal shall be deemed approved unless the board and the person who submitted the proposal agree to an extension of the one hundred twenty day period.