Streets and Highways Code § 31918
CHAPTER 11. Substitution of Other Lands, Property or Rights of Way for Those Previously Acquired
If at the hearing it appears that the owners of more than one-half of the area of the assessable land included within the district have made objection in writing to the proposed substitution as an entirety, the legislative body, by a resolution entered upon its minutes, shall so find. Thereafter the legislative body shall not proceed further with the substitution proceedings and said substitution proceedings are terminated.