From the funds appropriated pursuant to Public Utilities Code section 99314, the State Controller shall make quarterly allocations to each regional entity for the operators that operate primarily in the area under its jurisdiction. The amount or proportion for each operator shall be identified separately by the State Controller, and that amount or proportion shall constitute an apportionment for each operator within the regional entity's state transit assistance fund. The amount of an operator's apportionment shall be allocated to that operator upon the filing of a claim unless the regional entity finds that the operator does not qualify, pursuant to Public Utilities Code section 99314.6 or 99314.7, or section 6634, to receive the funds, or that the operator is otherwise not in compliance with the Act. Any amount of an operator's apportionment that is not allocated to that operator shall be retained in the state transit assistance fund for later allocation to the same operator or to a succeeding operator on such terms and conditions as the regional entity may determine, except for funds not allocated pursuant to sections 99314.6 or 99314.7, which shall be reallocated in accordance with the provisions in those sections.