If the review of the Assignment Agreement determines that the value of acquired rights is greater than initially
paid, the Company may be required to pay the difference to the Federal Government, or may proportionally
reduce the total volume of barrels acquired under the agreement. If the review determines that the value of the
acquired rights is lower than initially paid by the Company, the Federal Government will reimburse the Company
for the difference by delivering cash or bonds, subject to budgetary regulations.