California Code, Government Code - GOV § 975.8

At the time and place fixed for the hearing on the resolution or at any time and place to which the hearing is adjourned, the board shall proceed with the hearing.  Any person interested, including persons owning property within the local taxing entity, may appear and present any matters material to the question set forth in the resolution.  Thereafter, the board shall determine whether it is necessary to incur the bonded indebtedness.  The board's determination on the question of necessity is conclusive.