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            60114     Purchase Order Number  3 0 2 5 8 3
      P.O. BOX 15426                       001                 Requisition  60114-0-13131
      AUSTIN             TX 78761
                                                                             12/1/09         1


         Destination if Different  
      TX DEPT OF TRANSPORTATION            60114
      7901 N. INTERREGIONAL HWY.           002
      AUSTIN TX 78753

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.

84947

         Contractor
 VID#: 1-74-276-8918-1  COMP
 AIRGAS-SOUTHWEST INC
 11111 N LAMAR
 ATTN: BILL TINKHAM
 AUSTIN TX 78753

              FOR AGENCY USE ONLY:  14 399 09


                      **** ENTERED BY SHARLANA DILLARD ****
              CONTACT AT AGENCY: SHARLANA DILLARD, PHONE: 5128327043
              VENDOR CONTACT: BILL TINKHAM, PHONE: 512-799-8145

              AGENCY REFERENCE NUMBER: CONFIRMING PO 9-1-09

              ORDERING ENTITY/PURCHASER CONTACT INFORMATION:
              EMAIL: SDILLAR@DOT.STATE.TX.US
              FAX NUMBER: 5128327147


                   Description                                  Quantity  Unit      Unit    Extended
                                                                                   Price      Amount

      430-22  GASES: 227, TRAVIS CO., HOSPITAL, LABORATORY AND
               WELDING.   HIGHWAY DISTRICT 14 - AUSTIN
               (VENDOR MUST FILL STATE OWNED CYLINDERS)

     74005-4  ACETYLENE, 160 CU. FT. CYL.                           1600  CUFT     .1866      298.56

              AGENCY REFERENCE NUMBER: ACTUAL 100/CUFT

              AGENCY REFERENCE NUMBER: DHT 21863

     74010-4  ACETYLENE, 398 CU. FT. CYL.                           1500  CUFT     .1866      279.90

              AGENCY REFERENCE NUMBER: ACTUAL 300/CUFT

              AGENCY REFERENCE NUMBER: DHT 12526

     74015-3  OXYGEN, IND., 251 CU. FT. CYL.                        6275  CUFT      .023      144.33

              AGENCY REFERENCE NUMBER: DHT 159923

      430-24  GASES: 246, WILLIAMSON CO.,  GASES FOR HOSPITAL,
               LABORATORY AND WELDING USE.  FOR ALL QUALIFIED
               ENTITIES WITHIN THE COUNTY NOT OTHERWISE
               IDENTIFIED

     69025-7  GAS, MIXED, 75% ARGON, 25% CO2, 380 CU. FT. CYL.      1250  CUFT      .055       68.75

              AGENCY REFERENCE NUMBER: ACTUAL 125/CUFT

              AGENCY REFERENCE NUMBER: DHT 164845

     69032-3  OXYGEN, IND, 125 CU. FT. CYL.                          800  CUFT       .04       32.00


              AGENCY REFERENCE NUMBER: ACTUAL 80/CUFT

              AGENCY REFERENCE NUMBER: DHT 160781

              DELIVERY IN   5 DAYS.

                                                                   TOTAL THIS ORDER          $823.54