CONTRACT PURCHASE ORDER In accordance with the contract between the Contractor and the Texas Comptroller of Public Accounts

         Agency to Invoice    
      TX DEPT OF TRANSPORTATION            60133     Purchase Order Number  3 0 1 6 4 0
      DIV OF FINANCE/VOUCHER PROCESS       001                 Requisition  60129-0-4139
      125 E. 11TH STREET
      AUSTIN             TX 78701                                            10/5/09         1


         Destination if Different  
      TX DEPT OF TRANSPORTATION            60129
      3500 JACKSON AVENUE                  006
      AUSTIN TX 78731

THE STATE OF TEXAS IS EXEMPT FROM ALL FEDERAL EXCISE TAXES

STATE AND CITY SALES TAX EXEMPTION CERTIFICATE:
The State of Texas claims an exemption from
taxes under Texas Tax Code § 151.309(4),
for purchase of tangible personal property
described in this numbered order, purchased
from contractor and/or shipper listed here,
as this property is being secured for the
exclusive use of the State of Texas.

32542

         Contractor
 VID#: 1-58-093-9057-6  COMP
 AIR LIQUIDE AMERICA, L.P.
 801 W. NORTH CARRIER PARKWAY
 GRAND PRAIRIE TX 75050

                      **** ENTERED BY SAMUEL FRANCIS   ****
              CONTACT AT AGENCY: DAVID ESCAMILLIA, PHONE: 512 465-7312
              VENDOR CONTACT: RENE PRIETO, PHONE: 972-660-0541

                   Description                                  Quantity  Unit      Unit    Extended
                                                                                   Price      Amount

      430-22  GASES: 227, TRAVIS CO.,  GASES FOR HOSPITAL,
               LABORATORY AND WELDING USE.  FOR ALL QUALIFIED
               ENTITIES WITHIN THE COUNTY NOT OTHERWISE
               IDENTIFIED

     79025-7  GAS, MIXED, 75% ARGON, 25% CO2, 381 CU. FT. CYL.      4572  CUFT       .04      182.88

              AGENCY REFERENCE NUMBER: DHT# 153603

              DELIVERY IN   5 DAYS.

                                                                   TOTAL THIS ORDER          $182.88