California Code, Public Utilities Code - PUC § 99232.1

(a) Notwithstanding Section 99232, for each county with a population of less than 500,000 as of the 1970 federal decennial census, but with a population of 500,000 or more as of the 2000 federal decennial census, or a county whose population is 500,000 or more at a subsequent decennial census, the apportionment to the areas within the urbanized areas of the county, as defined for purposes of the 2000 federal decennial census and each census thereafter, shall be available solely for claims for Article 4 (commencing with Section 99260) and Article 4.5 (commencing with Section 99275) purposes. In a county subject to this section, the apportionment for areas outside of the urbanized area of the county may be used for claims for Article 4 (commencing with Section 99260), Article 4.5 (commencing with Section 99275), and Article 8 (commencing with Section 99400) purposes, providing that allocations under Article 8 (commencing with Section 99400) shall be subject to the unmet needs process as prescribed by Section 99401.5.

(b) The apportionment attributable to the unincorporated area within an urbanized area shall be determined by the proportion that the urbanized area's unincorporated area population bears to the total unincorporated population times the total apportionment attributable to the unincorporated area.

(c) For a county that is subject to this section, this section shall not apply to that county until July 1, 2014.