Cal. Sts. & Hy. Code § 25436
The board of directors shall hear and determine all objections presented at the hearing. The board may alter the boundaries of the proposed funding district or change the amount for which funding bonds are proposed to be issued, but it may not enlarge the boundaries of the funding district or increase the amount of bonds proposed to be issued. At the conclusion of the hearing, the board of directors shall finally determine the boundaries of the funding district and the zones therein and shall determine the amount of funding bonds to be issued, and the proportions of the bonds to be charged against each zone, which amounts shall not exceed the benefits to be derived by the lands within the funding district from the project for which the funding bonds are to be issued.
Ca. Sts. and High. Code § 25436