The board of supervisors of any county may, by ordinance, establish juvenile ranches, camps, or forestry camps, within or without the county, to which persons made wards of the court on the ground of fitting the description in Section 602 may be committed. As far as possible, the provisions of this chapter relating to commitments to the probation officer shall apply to commitments to those juvenile facilities, except that where any ward proves to be unfit to remain in any facility, in the opinion of the superintendent or director thereof, the superintendent or director shall make a recommendation to the probation department for consideration for other commitment. Complete operation and authority for the administration shall be vested in the county.