RCW 35.13.172
RCW 35.13.172: When review procedure may be dispensed with.
Whenever a petition is filed as provided in RCW 35.13.020 or a resolution is adopted by the city or town council, as provided in RCW 35.13.015 , and the area proposed for annexation is less than ten acres and less than eight hundred thousand dollars in assessed valuation, such review procedures shall be dispensed with.