Cal. Health & Saf. Code § 55108
Any resolution authorizing any bonds or issue thereof may designate a trustee for the local agency and holders of its bonds, and shall in such case prescribe the duties of the trustee with respect to the issuance, authentication, sale, and delivery of the bonds, the payment of principal and interest thereof, and the redemption of bonds.
The legislative body of the local agency may provide by a resolution for the deposit of all revenues pledged for the security of the bonds in one or more separate accounts under the control of the trustee. The money in the accounts shall be disbursed only as provided in the resolution.
The resolution may authorize the trustee to act on behalf of the holders of bonds, or any stated percentage thereof, for the purpose of exercising and prosecuting on behalf of the holders of the bonds any rights and remedies as may be available to the holders.
Ca. Health and Saf. Code § 55108