|(a) Purpose. This section describes reimbursement procedures for recipients of state and federal public transportation grant funds. (b) Contractor responsibilities. Unless the department provides written authorization to the contrary, the contractor shall: (1) submit reimbursement requests in a timely fashion, with all supporting documentation as required by the department and specified in the project agreement; (2) submit a final project billing within 45 days of the termination date specified in the project agreement; and (3) make payments promptly to subcontractors and suppliers, and failure to do so shall be grounds for termination of the grant contract by the department (the department shall not be responsible for the debts of the contractor). (c) Department responsibilities. The department will reimburse contractors within 30 days of the receipt of properly prepared and documented requests for payment. Payment is contingent upon the availability of federal and state appropriated funds.