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            60116     Purchase Order Number  3 0 2 8 0 7
      PO BOX 29928                         001                 Requisition  60116-0-13393
      SAN ANTONIO        TX 78229
                                                                            12/16/09         1


         Destination if Different  
      TX DEPT OF TRANSPORTATION            60116
      619 W COTTER                         002
      PORT ARANSAS TX 78373

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

                      **** ENTERED BY MELISSA ZUNKER   ****
              CONTACT AT AGENCY: MELISSA ZUNKER, PHONE: 361-808-2408
              PAYMENT CONTACT: JULI WORD, PHONE: 512-832-7096
              VENDOR CONTACT: BILL TINKHAM, PHONE: 512-799-8145

                   Description                                  Quantity  Unit      Unit    Extended
                                                                                   Price      Amount

      430-17  GASES: 178, NUECES CO., HOSPITAL, LABORATORY AND
               WELDING.   HIGHWAY DISTRICT 16 - CORPUS CHRISTI
               (VENDOR MUST FILL STATE OWNED CYLINDERS)

     84005-9  ACETYLENE, 100 CU. FT. CYL.                           3250  CUFT     .1866      606.45

     84015-8  OXYGEN, IND., 251 CU. FT. CYL.                        6275  CUFT      .023      144.33

      430-17  GASES: 178, NUECES CO.,  GASES FOR HOSPITAL,
               LABORATORY AND WELDING USE.  FOR ALL QUALIFIED
               ENTITIES WITHIN THE COUNTY NOT OTHERWISE
               IDENTIFIED

     89015-3  ARGON, 336 CU. FT. CYL.                               8400  CUFT      .066      554.40

     89999-8  CYLINDER RENTAL, DAILY RATE                           5000  DAY        .10      500.00

              DELIVERY IN   5 DAYS.

                                                                   TOTAL THIS ORDER        $1,805.18