|                                                      |
|------------------------------------------------------|
|                                                      |  |  |  |
| Exact name of registrant as specified in its charter | State or other jurisdiction of incorporation or organization | Commission File Number | (I.R.S. EmployerIdentification No.) |
| Questar Corporation                                  | Utah | 001-08796 | 87-0407509 |
| Questar Gas Company                                  | Utah | 333-69210 | 87-0155877 |
| Questar Pipeline Company                             | Utah | 000-14147 | 87-0307414 |

|                          |
|--------------------------|
|                          |  |
| Questar Corporation      | Common stock without par value, listed on the New York Stock Exchange |
| Questar Gas Company      | None |
| Questar Pipeline Company | None |

|                          |
|--------------------------|
|                          |  |
| Questar Corporation      | None |
| Questar Gas Company      | None |
| Questar Pipeline Company | None |

|                          |
|--------------------------|
|                          |  |
| Questar Corporation      | Yes [X]   No [   ] |
| Questar Gas Company      | Yes [   ]   No [X] |
| Questar Pipeline Company | Yes [   ]   No [X] |

----

|                          |
|--------------------------|
|                          |  |
| Questar Corporation      | Yes [X]   No [   ] |
| Questar Gas Company      | Yes [X]   No [   ] |
| Questar Pipeline Company | Yes [X]   No [   ] |

|                          |
|--------------------------|
|                          |  |
| Questar Corporation      | Yes [X]   No [   ] |
| Questar Gas Company      | Yes [X]   No [   ] |
| Questar Pipeline Company | Yes [X]   No [   ] |

|                          |
|--------------------------|
|                          |  |
| Questar Corporation      | [   ] |
| Questar Gas Company      | [   ] |
| Questar Pipeline Company | [   ] |

|                          |
|--------------------------|
|                          |  |  |  |  |
| Questar Corporation      | Large accelerated filer[X] | Accelerated filer[   ] | Non-accelerated filer[   ] | Smaller reporting company [   ] |
| Questar Gas Company      | Large accelerated filer[   ] | Accelerated filer[   ] | Non-accelerated filer[X] | Smaller reporting company [   ] |
| Questar Pipeline Company | Large accelerated filer[   ] | Accelerated filer[   ] | Non-accelerated filer[X] | Smaller reporting company [   ] |

|                          |
|--------------------------|
|                          |  |
| Questar Corporation      | Yes [   ]   No [X] |
| Questar Gas Company      | Yes [   ]   No [X] |
| Questar Pipeline Company | Yes [   ]   No [X] |

|                          |
|--------------------------|
|                          |  |
| Questar Corporation      | $3.7 billion |
| Questar Gas Company      | None |
| Questar Pipeline Company | None |

----

|                          |
|--------------------------|
|                          |  |  |
| Questar Corporation      | without par value | 175,097,361 |
| Questar Gas Company      | $2.50 per share par value | 9,189,626 |
| Questar Pipeline Company | $1.00 per share par value | 6,550,843 |

|                                              |
|----------------------------------------------|
|                                              |  |
| Exhibit No.                                  | Description |
|                                         |   |
| EXHIBIT 23 - CONSENTS OF EXPERTS AND COUNSEL |
|                                         |   |
| Questar Corporation                          |
|                                         |   |
| 23.1                                         | Consent of Independent Registered Public Accounting Firm. |
|                                         |   |
| Questar Gas Company                          |
| 23.3                                         | Consent of Independent Registered Public Accounting Firm. |
|                                         |   |
| Questar Pipeline Company                     |
|                                         |   |
| 23.4                                         | Consent of Independent Registered Public Accounting Firm. |
|                                         |   |

----

|        |
|--------|
|        |  |
|   | QUESTAR CORPORATIONQUESTAR GAS COMPANYQUESTAR PIPELINE COMPANY(Registrants) |
|   |   |
| By:    | /s/Ronald W. Jibson |
|   | Ronald W. Jibson,Chairman, President and Chief Executive Officer(Principal Executive Officer)Questar and Questar GasChairman of the Board, Questar Pipeline |
|   |   |
| By:    | /s/R. Allan Bradley |
|   | R. Allan BradleyPresident, Chief Executive Officer and Director(Principal Executive Officer)Questar Pipeline |
|   |   |
| By:    | /s/Kevin W. Hadlock |
|   | Kevin W. HadlockExecutive Vice President and Chief Financial Officer(Principal Financial and Accounting Officer)Questar, Questar Gas and Questar PipelineDirector, Questar Gas and Questar Pipeline |
|   |   |
| By:    | /s/Craig C. Wagstaff |
|   | Craig C. WagstaffDirector, Questar Gas |

|                                              |
|----------------------------------------------|
|                                              |  |
| Exhibit No.                                  | Description |
|                                         |   |
| EXHIBIT 23 - CONSENTS OF EXPERTS AND COUNSEL |
|                                         |   |
| Questar Corporation                          |
|                                         |   |
| 23.1                                         | Consent of Independent Registered Public Accounting Firm. |
|                                         |   |
| Questar Gas Company                          |
| 23.3                                         | Consent of Independent Registered Public Accounting Firm. |
|                                         |   |
| Questar Pipeline Company                     |
|                                         |   |
| 23.4                                         | Consent of Independent Registered Public Accounting Firm. |