Cal. Gov. Code § 64125

Each lease entered into by the authority with a project sponsor and each agreement, note, mortgage, or other instrument evidencing the obligations of a project sponsor to the authority shall provide that the rents or principal, interest, and other charges payable by the project sponsor shall be sufficient at all times, (a) to pay the principal of, sinking fund payments, if any, the premium, if any, and the interest on outstanding bonds of the authority issued in respect of such project as the same shall become due and payable, (b) to create and maintain reserves which may, but need not, be required or provided for in the resolution relating to the bonds of the authority, and (c) to pay its share of the administrative costs and expenses of the authority. The authority shall pledge the revenues derived, and to be derived, from a project or from a project sponsor for the purposes specified in (a), (b), and (c) of the preceding sentence and additional bonds may be issued which may rank on a parity with other bonds relating to the project to the extent and on the terms and conditions provided in the bond resolution.