46.6  Costs

If and to the extent that the Contractor carries out the Outstanding Work, the Authority, to the extent that then or subsequently there are funds standing to the credit of the Retention Fund Account, shall reimburse the Contractor's costs of so doing by withdrawing amounts from the Retention Fund Account and paying these to the Contractor.  If the aggregate of the amounts from time to time paid into the Retention Fund Account are insufficient to cover the Contractor's costs the Contractor shall bear the balance of such costs itself.