UNITED STATES


UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549


FORM 10-Q/A

Amendment No. 1


[X]

QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934.

For the quarterly period ended June 30, 2011


[   ]

TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the transition period from ___ to ___


Exact name of registrant as specified in its charter

State or other jurisdiction or incorporation of organization

Commission File Number

(I.R.S. Employer

Identification No.)

Questar Corporation

Utah

001-08796

87-0407509

Questar Pipeline Company

Utah

000-14147

87-0307414

Questar Gas Company

Utah

333-69210

87-0155877


180 East 100 South Street, P.O. Box 45433 Salt Lake City, Utah 84145-0433

(Address of principal executive offices)


Registrants’ telephone number, including area code (801) 324-5000

Web site http://www.questar.com


Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.


Questar Corporation

Yes [X]   No [   ]

Questar Pipeline Company

Yes [X]   No [   ]

Questar Gas Company

Yes [X]   No [   ]


Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (Section 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).


Questar Corporation

Yes [X]   No [   ]

Questar Pipeline Company

Yes [   ]   No [   ]

Questar Gas Company

Yes [   ]   No [   ]


Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See definitions of "large accelerated filer," "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the Exchange Act. Do not check non-accelerated filer if a smaller reporting company (Check one):


Questar Corporation

Large accelerated filer [X]

Accelerated filer [   ]

Non-accelerated filer [   ]

Smaller reporting company [   ]

Questar Pipeline Company

Large accelerated filer [   ]

Accelerated filer [   ]

Non-accelerated filer [X]

Smaller reporting company [   ]

Questar Gas Company

Large accelerated filer [   ]

Accelerated filer [   ]

Non-accelerated filer [X]

Smaller reporting company [   ]


Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).


Questar Corporation

Yes [   ]   No [X]

Questar Pipeline Company

Yes [   ]   No [X]

Questar Gas Company

Yes [   ]   No [X]




Indicate the number of shares outstanding of each of the issuers’ classes of common stock, as of July 31, 2011:


Questar Corporation

without par value

177,507,911

Questar Pipeline Company

$1.00 per share par value

6,550,843

Questar Gas Company

$2.50 per share par value

9,189,626


Questar Pipeline Company and Questar Gas Company, as wholly-owned subsidiaries of a reporting company, meet the conditions set forth in General Instruction H(1)(a) and (b) of Form 10-Q and are therefore filing this form with the reduced disclosure format.




QUESTAR CORPORATION

QUESTAR PIPELINE COMPANY

QUESTAR GAS COMPANY

FORM 10-Q/A

Amendment No.1

FOR THE QUARTERLY PERIOD ENDED JUNE 30, 2011


EXPLANATORY NOTE

This amendment No. 1 for the Quarterly Report on Form 10-Q/A is being filed to clarify that the disclosure in the ITEM 4. CONTROLS AND PROCEDURES applies to all three registrants, Questar Corporation, Questar Pipeline Company and Questar Gas Company.


ITEM 4.  CONTROLS AND PROCEDURES.


Evaluation of Disclosure Controls and Procedures.

The Chief Executive Officers and Chief Financial Officer of Questar Corporation, Questar Pipeline Company and Questar Gas Company have evaluated the effectiveness of Questar Corporation’s, Questar Pipeline Company’s and Questar Gas Company’s disclosure controls and procedures (as such term is defined in Rule 13a-15(e) under the Securities Exchange Act of 1934, as amended) as of June 30, 2011. Based on such evaluation, such officers have concluded that, as of June 30, 2011, Questar Corporation’s, Questar Pipeline Company’s and Questar Gas Company’s disclosure controls and procedures are effective in alerting them on a timely basis to material information relating to Questar Corporation, Questar Pipeline Company and Questar Gas Company, including their consolidated subsidiaries, required to be included in Questar Corporation’s, Questar Pipeline Company’s and Questar Gas Company’s reports filed or submitted under the Exchange Act. Questar Corporation’s, Questar Pipeline Company’s and Questar Gas Company’s Chief Executive Officers and Chief Financial Officer also concluded that the controls and procedures were effective in ensuring that information required to be disclosed by Questar Corporation, Questar Pipeline Company and Questar Gas Company in the reports that it files or submits under the Exchange Act is accumulated and communicated to Questar Corporation’s, Questar Pipeline Company’s and Questar Gas Company’s management including its principal executive and financial officers or persons performing similar functions as appropriate to allow timely decisions regarding required disclosure.


Changes in Internal Controls.

There were no changes in Questar Corporation’s, Questar Pipeline Company’s and Questar Gas Company’s internal controls over financial reporting that occurred during the quarter ended June 30, 2011, that have materially affected, or are reasonably likely to materially affect, Questar Corporation’s,  Questar Pipeline Company’s and Questar Gas Company’s internal control over financial reporting.



SIGNATURES


Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.


QUESTAR CORPORATION

QUESTAR PIPELINE COMPANY

QUESTAR GAS COMPANY

(Registrants)



September 2, 2011

/s/Ronald W. Jibson

Ronald W. Jibson

President and Chief Executive Officer, Questar and Questar Gas


September 2, 2011

/s/R. Allan Bradley

R. Allan Bradley

President and Chief Executive Officer, Questar Pipeline


September 2, 2011

/s/Kevin W. Hadlock

Kevin W. Hadlock

Executive Vice President and Chief Financial Officer,

Questar, Questar Pipeline and Questar Gas





Questar 2011 Form 10-Q

2