Appointment of Administrative Borrower. Each Credit Party hereby irrevocably appoints the Administrative Borrower as the borrowing agent and attorney-in-fact for all Credit Parties, which appointment shall remain in full force and effect unless and until the Administrative Agent shall have received prior written notice signed by each Borrower that such appointment has been revoked and that another Borrower has been appointed the Administrative Borrower. Each Credit Party hereby irrevocably appoints and authorizes the Administrative Borrower to # provide the Administrative Agent with all notices with respect to Loans and Letters of Credit obtained for the benefit of any Borrower and all other notices and instructions under this Agreement, # take such action as the Administrative Borrower deems appropriate on its behalf to obtain Loans and Letters of Credit, and # exercise such other powers as are reasonably incidental thereto to carry out the purposes of this Agreement. It is understood that the handling of the Collateral of the Credit Parties in a combined fashion, as more fully set forth herein, is done solely as an accommodation to the Borrowers in order to utilize the collective borrowing powers of the Credit Parties in the most efficient and economical manner and at their request, and that neither the Administrative Agent nor any Lender shall incur liability to any Credit Party as a result hereof. Each Credit Party expects to derive benefit, directly or indirectly, from the handling of the Collateral in a combined fashion since the successful operation of each Credit Party is dependent on the continued successful performance of the integrated group.

Appointment of Administrative Borrower. Each Credit Party hereby irrevocably appoints the Administrative Borrower as the borrowing agent and attorney-in-fact for all Credit Parties, which appointment shall remain in full force and effect unless and until the Administrative Agent shall have received prior written notice signed by each Borrower that such appointment has been revoked and that another Borrower has been appointed the Administrative Borrower. Each Credit Party hereby irrevocably appoints and authorizes the Administrative Borrower to # provide the Administrative Agent with all notices with respect to Loans and Letters of Credit obtained for the benefit of any Borrower and all other notices and instructions under this Agreement, # take such action as the Administrative Borrower deems appropriate on its behalf to obtain Loans and Letters of Credit, and # exercise such other powers as are reasonably incidental thereto to carry out the purposes of this Agreement. It is understood that the handling of the Collateral of the Credit Parties in a combined fashion, as more fully set forth herein, is done solely as an accommodation to the Borrowers in order to utilize the collective borrowing powers of the Credit Parties in the most efficient and economical manner and at their request, and that neither the Administrative Agent nor any Lender shall incur liability to any Credit Party as a result hereof. Each Credit Party expects to derive benefit, directly or indirectly, from the handling of the Collateral in a combined fashion since the successful operation of each Credit Party is dependent on the continued successful performance of the integrated group.

Agent: BOKF, NA dba, Bank of Oklahoma., as the agent under the Credit Agreement

Administrative Agent: [[Bank of America:Organization]], as the administrative agent under the Loan Agreement

Administrative Agent: [[Administrative Agent:Organization]], National Association, as the Administrative Agent under the Credit Agreement

#[[Administrative Agent:Organization]]: [[JPMCB:Organization]]. N.A., as the [[Administrative Agent:Organization]] under the Credit Agreement

#[[Administrative Agent:Organization]]: [[JPMCB:Organization]], as the [[Administrative Agent:Organization]] under the Credit Agreement

Administrative Agent: [[Organization B:Organization]], as the administrative agent under the [[Organization A:Organization]] Agreement

Agent: Wells Fargo Bank, National Association

Payments by Borrower; Presumptions by Administrative Agent. Unless the Administrative Agent shall have received notice from the Borrower prior to the date on which any payment is due to the Administrative Agent for the account of the Lenders or the L/C Issuer hereunder that the Borrower will not make such payment, the Administrative Agent may assume that the Borrower has made such payment on such date in accordance herewith and may, in reliance upon such assumption, distribute to the Lenders or the L/C Issuer, as the case may be, the amount due. In such event, if the Borrower has not in fact made such payment, then each of the Lenders or the L/C Issuer, as the case may be, severally agrees to repay to the Administrative Agent forthwith on demand the amount so distributed to such Lender or the L/C Issuer, in immediately available funds with interest thereon, for each day from and including the date such amount is distributed to it to but excluding the date of payment to the Administrative Agent, at the greater of the Federal Funds Rate and a rate determined by the Administrative Agent in accordance with banking industry rules on interbank compensation, but not in excess of the Maximum Rate.