Any person interested may appear at the hearing and object to the withdrawal of territory from the district or may object to the continuance of the remaining territory as a highway lighting district. The board of supervisors shall consider and pass upon all objections, and the board of supervisors may order the withdrawal or may grant the petition for withdrawal either in whole or in part, and by resolution declare the district reestablished excluding from the district the territory withdrawn if it finds that one or more of the following facts exist:
The decision of the board of supervisors on all objections and protests which are made shall be final and conclusive.
Ca. Sts. and High. Code § 19233