U.S. Uses in Authorization to Enter into, and Enforcement of, the Collateral Documents Clause

Authorization to Enter into, and Enforcement of, the Collateral Documents from Third Amended and Restated Credit Agreement

This Third Amended and Restated Credit Agreement is entered into as of November 21, 2011, by and among EMCOR Group Inc., a Delaware corporation (the Company), and EMCOR Group (UK) plc., a United Kingdom public limited company (EMCOR UK), the several financial institutions from time to time party to this Agreement, as Lenders, and Bank of Montreal, as Agent as provided herein. All capitalized terms used herein without definition shall have the same meanings herein as such terms are defined in Section 9.1 hereof.

Authorization to Enter into, and Enforcement of, the Collateral Documents. Each of the Agent and the Collateral Agent is hereby irrevocably authorized by each of the Lenders to execute and deliver the Collateral Documents on behalf of each of the Lenders and their Affiliates and to take such action and exercise such powers under the Collateral Documents as the Agent or Collateral Agent, as applicable, considers appropriate, provided that neither the Agent nor Collateral Agent shall amend the Collateral Documents unless such amendment is agreed to in writing by the Required Lenders. Each Lender acknowledges and agrees that it will be bound by the terms and conditions of the Collateral Documents upon the execution and delivery thereof by the Agent and/or the Collateral Agent, as applicable. Except as otherwise specifically provided for herein, no Lender (or its Affiliates) other than the Collateral Agent shall have the right to institute any suit, action or proceeding in equity or at law for the foreclosure or other realization upon any Collateral or for the execution of any trust or power in respect of the Collateral or for the appointment of a receiver or for the enforcement of any other remedy under the Collateral Documents; it being understood and intended that no one or more of the Lenders (or their Affiliates) shall have any right in any manner whatsoever to affect, disturb or prejudice the Lien of the Collateral Agent (or any security trustee therefor) under the Collateral Documents by its or their action or to enforce any right thereunder, and that all proceedings at law or in equity shall be instituted, had, and maintained by the Collateral Agent (or its security trustee) in the manner provided for in the relevant Collateral Documents for the benefit of the Lenders and their Affiliates. SECTION 11. MISCELLANEOUS.

Authorization to Enter into, and Enforcement of, the Collateral Documents from Amended and Restated Credit Agreement

This Amended and Restated Credit Agreement is entered into as of December 19, 2007, by and among Delek Marketing & Supply, LP, a Delaware limited partnership (the Borrower), the various institutions from time to time party to this Agreement, as Lenders, and Fifth Third Bank, an Ohio banking corporation, as Administrative Agent and L/C Issuer.

Authorization to Enter into, and Enforcement of, the Collateral Documents. The Administrative Agent is hereby irrevocably authorized by each of the Lenders to execute and deliver the Collateral Documents on behalf of each of the Lenders and their Affiliates and to take such action and exercise such powers under the Collateral Documents as the Administrative Agent considers appropriate, provided the Administrative Agent shall not amend the Collateral Documents unless such amendment is agreed to in writing by the Required Lenders. Each Lender acknowledges and agrees that it will be bound by the terms and conditions of the Collateral Documents upon the execution and delivery thereof by the Administrative Agent. Except as otherwise specifically provided for herein, no Lender (or its Affiliates) other than the Administrative Agent shall have the right to institute any suit, action or proceeding in equity or at law for the foreclosure or other realization upon any Collateral or for the execution of any trust or power in respect of the Collateral or for the appointment of a receiver or for the enforcement of any other remedy under the Collateral Documents; it being understood and intended that no one or more of the Lenders (or their Affiliates) shall have any right in any manner whatsoever to affect, disturb or prejudice the Lien of the Administrative Agent (or any security trustee therefor) under the Collateral Documents by its or their action or to enforce any right thereunder, and that all proceedings at law or in equity shall be instituted, had, and maintained by the Administrative Agent (or its security trustee) in the manner provided for in the relevant Collateral Documents for the benefit of the Lenders and their Affiliates.

Authorization to Enter into, and Enforcement of, the Collateral Documents from Credit Agreement

This Credit Agreement is entered into as of July 31, 2006, by and among Delek Marketing & Supply, LP, a Delaware limited partnership (the Borrower), the various institutions from time to time party to this Agreement, as Lenders, and Fifth Third Bank, an Ohio banking corporation, as Administrative Agent and L/C Issuer.

Authorization to Enter into, and Enforcement of, the Collateral Documents. The Administrative Agent is hereby irrevocably authorized by each of the Lenders to execute and deliver the Collateral Documents on behalf of each of the Lenders and their Affiliates and to take such action and exercise such powers under the Collateral Documents as the Administrative Agent considers appropriate, provided the Administrative Agent shall not amend the Collateral Documents unless such amendment is agreed to in writing by the Required Lenders. Each Lender acknowledges and agrees that it will be bound by the terms and conditions of the Collateral Documents upon the execution and delivery thereof by the Administrative Agent. Except as otherwise specifically provided for herein, no Lender (or its Affiliates) other than the Administrative Agent shall have the right to institute any suit, action or proceeding in equity or at law for the foreclosure or other realization upon any Collateral or for the execution of any trust or power in respect of the Collateral or for the appointment of a receiver or for the enforcement of any other remedy under the Collateral Documents; it being understood and intended that no one or more of the Lenders (or their Affiliates) shall have any right in any manner whatsoever to affect, disturb or prejudice the Lien of the Administrative Agent (or any security trustee therefor) under the Collateral Documents by its or their action or to enforce any right thereunder, and that all proceedings at law or in equity shall be instituted, had, and maintained by the Administrative Agent (or its security trustee) in the manner provided for in the relevant Collateral Documents for the benefit of the Lenders and their Affiliates.