(a) The board and the association shall enter into an agreement under which the association shall provide for the payment of all public security obligations from available funds collected by the association and deposited as required by this subchapter. If the association determines that it is unable to pay the public security obligations and public security administrative expenses, if any, with available funds, the association shall pay those obligations and expenses in accordance with Sections 2210.612, 2210.613, and 2210.6131 as applicable. Class 1, Class 2, or Class 3 public securities may be issued on a parity or subordinate lien basis with other Class 1, Class 2, or Class 3 public securities, respectively.
(b) If any public securities issued under this chapter are outstanding, the authority shall notify the association of the amount of the public security obligations and the estimated amount of public security administrative expenses, if any, each calendar year in a period sufficient, as determined by the association, to permit the association to determine the availability of funds and assess a premium surcharge if necessary.

(c) The association shall deposit all revenue collected under § 2210.612 in the Class 1 public security trust fund, all revenue collected under § 2210.613 in the Class 2 public security trust fund, and all revenue collected under § 2210.6131 in the Class 3 public security trust fund. Money deposited in a fund may be invested as permitted by general law. Money in a fund required to be used to pay public security obligations and public security administrative expenses, if any, shall be transferred to the appropriate funds in the manner and at the time specified in the proceedings authorizing the public securities to ensure timely payment of obligations and expenses. This may include the board establishing funds and accounts with the comptroller that the board determines are necessary to administer and repay the public security obligations. If the association has not transferred amounts sufficient to pay the public security obligations to the board’s designated interest and sinking fund in a timely manner, the board may direct the Texas Treasury Safekeeping Trust Company to transfer from the Class 1 public security trust fund, the Class 2 public security trust fund, or the Class 3 public security trust fund to the appropriate account the amount necessary to pay the public security obligation.
(d) The association shall provide for the payment of the public security obligations and the public security administrative expenses by irrevocably pledging revenues received from premiums, premium surcharges, and amounts on deposit in the Class 1 public security trust fund, the Class 2 public security trust fund, and the Class 3 public security trust fund, together with any public security reserve fund, as provided in the proceedings authorizing the public securities and related credit agreements.
(e) An amount owed by the board under a credit agreement shall be payable from and secured by a pledge of revenues received by the association from the Class 1 public security trust fund, the Class 2 public security trust fund, and the Class 3 public security trust fund to the extent provided in the proceedings authorizing the credit agreement.