Prior to the consideration of any proposed sheep and wool production development and marketing program or amendment, the Director may require the sponsors thereof to deposit with him such funds, not to exceed $5,000, as may be necessary to defray the expenses of preparing, holding hearings, and conducting the referendum on such sheep and wool production development and marketing program or amendment. Any funds received by the Director shall be deposited with the State Treasurer as ex-officio custodian and held by him separate and apart from any other public moneys of this State in a trust fund designated as the Sheep and Wool Commodity Trust Fund and disbursed only upon a voucher or order issued by the Director and paid by a warrant drawn by the State Comptroller and countersigned by the State Treasurer. The Director shall order disbursements from the Sheep and Wool Commodity Trust Fund only for payment of the expenses authorized by this Act. Any funds collected beyond actual expenses shall be reimbursed to the sponsors. The Treasurer of the sheep and wool production development and marketing board shall reimburse the sponsors in the amount of the deposit, less any refunds, from fees received under such program if such program is established.