Approval of Cost and Revenue Statements. Contractor shall submit costs and revenue statements as required in the Accounting Procedure. Staatsolie shall signify its approval or disapproval of items regarding Cost Recovery and revenue contained in monthly and quarterly statements within thirty (30) Days of receipt of such statements and necessary supporting documentation requested by Staatsolie. If Staatsolie indicates its disapproval of any such item, Parties shall meet within thirty (30) Days of Contractor’s receipt of Staatsolie’s notice of disapproval to review the matter. Failure of Staatsolie to disapprove of any item submitted for Cost Recovery within the allotted time shall be deemed an approval subject to Sub-article 26.8, and its cost shall be reimbursed to Contractor in accordance with Article 13.