Upon Tenant's written request given not more than ninety (90) days after Tenant's receipt of a Statement for a particular Expense Year, and provided that Tenant is not then in default under this Lease beyond the applicable notice and cure period provided in this Lease, specifically including, but not limited to, the timely payment of Additional Rent (whether or not the same is the subject of the audit contemplated herein), Landlord shall furnish Tenant with such reasonable supporting documentation in connection with said Direct Expenses as Tenant may reasonably request. Landlord shall provide said information to Tenant within sixty (60) days after Tenant's written request therefor. Within one hundred eighty (180) days after receipt of a Statement by Tenant (the " Audit Period "), if Tenant disputes the amount of Direct Expenses set forth in the Statement, an independent certified public accountant (which accountant (A) is a member of a nationally or regionally recognized accounting firm which has previous experience in auditing financial operating records of landlords of office buildings, (B) shall not already be providing primary accounting and/or lease administration services to Tenant and shall not have provided primary accounting and/or lease administration services to Tenant in the past three (3) years, (C) is not working on a contingency fee basis [ i.e. , Tenant must be billed based on the actual time and materials that are incurred by the accounting firm in the performance of the audit], and (D) shall not currently or in the future be providing accounting and/or lease administration services to another tenant in the Building and/or the Project in connection with a review or audit by such other tenant of Direct Expenses) designated and paid for by Tenant, may, after reasonable notice to Landlord and at reasonable times, audit Landlord's records with respect to the Statement at Landlord's corporate offices, provided that ( i ) Tenant is not then in default under this Lease (beyond the applicable notice and cure periods provided under this Lease), ( ii ) Tenant has paid all amounts required to be paid under the applicable Estimate Statement and Statement, and ( iii ) a copy of the audit agreement between Tenant and its particular auditor has been delivered to Landlord prior to the commencement of the audit. In connection with such audit, Tenant and Tenant's agents must agree in advance to follow Landlord's reasonable rules and procedures regarding an audit of the aforementioned Landlord records, and shall execute a commercially reasonable confidentiality agreement regarding such audit. Any audit report prepared by Tenant's auditors shall be delivered concurrently to Landlord and Tenant within the Audit Period. Tenant's failure to dispute and/or audit the amount of Direct Expenses set forth in any Statement within the Audit Period shall be deemed to be Tenant's approval of such Statement and Tenant, thereafter, waives the right or ability to audit the amounts set forth in such Statement. If after such audit, Tenant still disputes such Direct Expenses, an audit to determine the proper amount shall be made, at Tenant's expense, by an independent certified public accountant (the " Accountant ") selected by Landlord and subject to Tenant's reasonable approval; provided that if such audit by the Accountant proves that Direct Expenses set forth in the particular Statement were overstated by more than five percent (5%), then the cost of the Accountant and the cost of such audit shall be paid for by Landlord. Tenant hereby acknowledges that Tenant's sole right to audit Landlord's books and records and to contest the amount of Direct Expenses payable by Tenant shall be as set forth in this Section 4.6 , and Tenant hereby waives any and all other rights pursuant to applicable law to audit such books and records and/or to contest the amount of Direct Expenses payable by Tenant.