Cal. Rev. & Tax. Code § 97.41
(a)
(2) For purposes of implementing paragraph (1), the applicable fractions are as follows:
(b) For purposes of this section, “qualifying county service area” means a county service area that was formed prior to July 1, 1994, pursuant to the County Service Area Law (Chapter 2.5 (commencing with Section 25210) of Part 2 of Division 2 of Title 3 of the Government Code) and that is either of the following: