(a) The proposed area shall contain a minimum of 50 single family dwellings or, in the alternative, it shall contain a minimum area of one square mile.

(b) The proposed area shall have readily identifiable boundaries. If reasonably possible, the boundaries shall constitute a physical barrier, i.e., a river, freeway, roadway, etc.

(c) The petition for the proposed area shall be signed by a minimum of 51 percent of the area’s registered voters.

(d) The completed petition supporting the proposed area shall be filed with the clerk of the county council.

(e) A request that meets subsections (1)(a), (b), and (d) of this section by a Snohomish County fire district or fire authority for a "no fireworks area" designation within a fire district may substitute for the signatures referenced in subsection (1)(c) of this section.