Provides that, as an alternative procedure to RCW 70.44.400, territory within an incorporated city of less than twenty thousand in population may be withdrawn from a public hospital district in the following manner and upon the following conditions: The petition for withdrawal shall be in writing and shall designate the boundaries of the territory proposed to be withdrawn from the district and shall be signed by at least fifteen percent of the qualified voters residing within the territory so designated who are qualified voters on the date of filing such petition. The proposed area to be withdrawn must comprise all residents within an incorporated city.