California Code, Water Code - WAT § 75478.5

The board, subsequent to any redetermination of benefits made pursuant to Section 75474, may, on its own motion or on petition of landowners representing at least 25 percent of the lands within the district or at least 25 percent of the voters of the district, direct that the zones of benefit or that the percentages of benefit be further redetermined in the same manner as provided in this chapter.