Cal. Pub. Util. Code § 100462

The agreements and leases shall be duly acknowledged before a person authorized by law to take acknowledgments of deeds and in the form required for acknowledgment of deeds. These agreements, leases, and equipment trust certificates shall be authorized by resolution of the VTA and shall contain covenants, conditions, and provisions that may be deemed necessary or appropriate to ensure the payment of the equipment trust certificates from legally available sources of funds specified in the certificates.