Section 9-475 - Filing of map; hearing; approval; recordingA. One copy of the plat or map shall be filed with the city or town and the other copy with the board of supervisors of the county in which the subdivision is situated, to which shall be attached the petition of the owner praying for the approval of the plat or map.B. The board of supervisors shall set the petition for hearing not less than fifteen and not more than thirty days from the date of the filing of the plat or map and petition with the board, and shall cause written notice thereof to be given to the governing body of the city or town. The city or town may appear at the hearing and show cause why the petition should not be granted. Upon the hearing, if it appears to the board that the plat or map reasonably conforms to legal requirements it shall approve and endorse the approval upon the plat or map and transmit it to the county recorder of the county for filing.