The bonds and the resolution providing for their issuance shall state that the bonds are limited obligation bonds payable solely from revenues of the local agency pledged for that purpose.
In addition, the resolution of the legislative body providing for the issuance of limited obligation bonds shall specify the amount and source of revenue pledged therefor. The pledged revenue shall be sufficient to pay the following amounts annually, as they become due and payable:
Ca. Gov. Code § 50665.7