Interest accruing pursuant to Section 99301.5 shall continue to be allocated under that section for as long as there is a balance of money retained for the development of transit in the local transportation fund of the County of Orange. For this purpose, the amount of the balance retained for the development of transit in the local transportation fund shall be determined by the Orange County Transportation Commission with the concurrence of the Orange County Transit District prior to the beginning of each fiscal year.

After the allocation instructions have been received from the transportation planning

agency, the interest accruing shall be deposited in a separate account maintained by the Orange County Treasurer, which shall be known as the Orange County Unified Transportation Trust. Thereafter, the Orange County Transportation Commission shall issue allocation instructions on the balance in the Orange County Unified Transportation Trust.