----

----

|                                                |
|------------------------------------------------|
|                                                |  |
| ONEOK, PARTNERS, L.P.                          |
| By:                                            | ONEOK Partners GP, L.L.C., itssole general partner |
| By:                                            | /s/ Derek S. Reiners |
|                                           | Derek S. ReinersSenior Vice President, Chief Financial Officerand Treasurer |
|                                           |   |
| ONEOK PARTNERS INTERMEDIATELIMITED PARTNERSHIP |
| By:                                            | ONEOK ILP GP, L.L.C.,its sole General Partner |
| By:                                            | /s/ Derek S. Reiners |
|                                           | Derek S. ReinersSenior Vice President, Chief Financial Officerand Treasurer |

----

|                                        |
|----------------------------------------|
|                                        |  |  |
| CITIBANK, N.A.,as Administrative Agent |
|                                   |   |
| By:                                    | /s/ Maureen Maroney |
|                                   | Name:Title: | Maureen MaroneyVice President |

----

|                                                              |
|--------------------------------------------------------------|
|                                                              |  |  |
| CITIBANK, N.A.,as a Lender, L/C Issuer and Swing Line Lender |
|                                                         |   |
| By:                                                          | /s/ Maureen Maroney |
|                                                         | Name:Title: | Maureen MaroneyVice President |

----

|                                                  |
|--------------------------------------------------|
|                                                  |  |  |
| BANK OF AMERICA, N.A.,as a Lender and L/C Issuer |
|                                             |   |
| By:                                              | /s/ Adam H. Fey |
|                                             | Name:Title: | Adam H. FeyDirector |

----

|                                              |
|----------------------------------------------|
|                                              |  |  |
| BARCLAYS BANK PLC,as a Lender and L/C Issuer |
|                                         |   |
| By:                                          | /s/ Marguerite Sutton |
|                                         | Name:Title: | Marguerite SuttonVice President |

----

|                                                      |
|------------------------------------------------------|
|                                                      |  |  |
| JPMORGAN CHASE BANK, N.A.,as a Lender and L/C Issuer |
|                                                 |   |
| By:                                                  | /s/ Darren Vanek |
|                                                 | Name:Title: | Darren VanekExecutive Director |

----

|                                              |
|----------------------------------------------|
|                                              |  |  |
| MIZUHO BANK, LTD.,as a Lender and L/C Issuer |
|                                         |   |
| By:                                          | /s/ Leon Mo |
|                                         | Name:Title: | Leon MoAuthorized Signatory |

----

|                                                      |
|------------------------------------------------------|
|                                                      |  |  |
| MORGAN STANLEY BANK, N.A.,as a Lender and L/C Issuer |
|                                                 |   |
| By:                                                  | /s/ Melissa James |
|                                                 | Name:Title: | Melissa JamesAuthorized Signatory |

----

|                                                   |
|---------------------------------------------------|
|                                                   |  |  |
| UBS AG STAMFORD BRANCH,as a Lender and L/C Issuer |
|                                              |   |
| By:                                               | /s/ Houssem Daly |
|                                              | Name:Title: | Houssem DalyAssociate Director |
|                                              |   |   |
| By:                                               | /s/ Kenneth Chin |
|                                              | Name:Title: | Kenneth ChinDirector |

----

|                                                                  |
|------------------------------------------------------------------|
|                                                                  |  |  |
| WELLS FARGO BANK, NATIONALASSOCIATION,as a Lender and L/C Issuer |
|                                                             |   |
| By:                                                              | /s/ Nathan Starr |
|                                                             | Name:Title: | Nathan StarrPortfolio Manager |

----

|                                              |
|----------------------------------------------|
|                                              |  |  |
| BRANCH BANKING AND TRUST COMPANY,as a Lender |
|                                         |   |
| By:                                          | /s/ Lincoln LaCour |
|                                         | Name:Title: | Lincoln LaCourAVP – Corporate Banking Associate |

----

|                                                    |
|----------------------------------------------------|
|                                                    |  |  |
| CREDIT SUISSE AG, CAYMAN ISLANDSBRANCH,as a Lender |
|                                               |   |
| By:                                                | /s/ Nupur Kumar |
|                                               | Name:Title: | Nupur KumarAuthorized Signatory |
|                                               |   |   |
| By:                                                | /s/ Gregory Fantoni |
|                                               | Name:Title: | Gregory FantoniAuthorized Signatory |

----

|                                              |
|----------------------------------------------|
|                                              |  |  |
| DEUTSCHE BANK AG NEW YORK BRANCH,as a Lender |
|                                         |   |
| By:                                          | /s/ Ming K. Chu |
|                                         | Name:Title: | Ming K. ChuVice President |
|                                         |   |   |
| By:                                          | /s/ Yvonne Tilden |
|                                         | Name:Title: | Yvonne TildenDirector |

----

|                                    |
|------------------------------------|
|                                    |  |  |
| GOLDMAN SACHS BANK USA,as a Lender |
|                               |   |
| By:                                | /s/ Ryan Durkin |
|                               | Name:Title: | Ryan DurkinAuthorized Signatory |

----

|                                            |
|--------------------------------------------|
|                                            |  |  |
| PNC BANK, NATIONAL ASSOCIATION,as a Lender |
|                                       |   |
| By:                                        | /s/ Tom Byargeon |
|                                       | Name:Title: | Tom ByargeonManaging Director |

----

|                                  |
|----------------------------------|
|                                  |  |  |
| ROYAL BANK OF CANADA,as a Lender |
|                             |   |
| By:                              | /s/ Jim Allred |
|                             | Name:Title: | Jim AllredAuthorized Signatory |

----

|                                                    |
|----------------------------------------------------|
|                                                    |  |  |
| THE BANK OF TOKYO-MITSUBISHI UFJ, LTD.,as a Lender |
|                                               |   |
| By:                                                | /s/ Stephan W. Warfel |
|                                               | Name:Title: | Stephen W. WarfelManaging Director |

----

|                                            |
|--------------------------------------------|
|                                            |  |  |
| U.S. BANK NATIONAL ASSOCIATION,as a Lender |
|                                       |   |
| By:                                        | /s/ John Prigge |
|                                       | Name:Title: | John PriggeVice President |

----

|                                                 |
|-------------------------------------------------|
|                                                 |  |  |
| SUMITOMO MITSUI BANKING CORPORATION,as a Lender |
|                                            |   |
| By:                                             | /s/ David Kee |
|                                            | Name:Title: | David KeeManaging Director |

----

|                                           |
|-------------------------------------------|
|                                           |  |  |
| BOKF, NA dba BANK OF OKLAHOMA,as a Lender |
|                                      |   |
| By:                                       | /s/ Linda J. Bridges |
|                                      | Name:Title: | Linda J. BridgesVice President |

----

|                         |
|-------------------------|
|                         |  |  |
| ARVEST BANK,as a Lender |
|                    |   |
| By:                     | /s/ Rick Gaut |
|                    | Name:Title: | Rick GautSVP, Commercial Loan Manager |