California Code, Government Code - GOV § 99071

The principal of and interest on the bonds and the payment of any ancillary obligations shall be payable from and secured by a pledge of all state sales and use tax revenues in the Fiscal Recovery Fund established pursuant to Section 99008 and any earnings thereon.  To the extent that moneys in the Fiscal Recovery Fund are deemed insufficient to make these payments, pursuant to an estimate certified by the Director of Finance and approved by the committee, there shall be collected each year and in the same manner and at the same time as other state revenue is collected, in addition to the ordinary revenues of the state, a sum in an amount required to pay the principal of, and interest on, the bonds and the payment of any ancillary obligations for which payment is authorized by this title and for which the full faith and credit of the state has been pledged.  It is the duty of all officers charged by law with any duty in regard to the collection of the revenue to do and perform each and every act that is necessary to collect that additional sum.