California Code, Government Code - GOV § 7296.2

As used in Sections 7292, 7295.2, 7295.4, 7299.3, and 7299.4, a “substantial number of non-English-speaking people” are members of a group who either do not speak English, or who are unable to effectively communicate in English because it is not their native language, and who comprise 5 percent or more of the people served by the statewide or any local office or facility of a state agency.