Item 5.02 Departure of Directors or Principal Officers; Election of Directors;
Appointment of Principal Officers; Compensatory Arrangements of Certain Officers.

a.

On April 30, 2009, Stephen E. Parks, Senior Vice President and Chief Financial Officer announced his intention to retire from the Company effective July 1, 2009. From May 7, 2009, until his retirement, Mr. Parks will serve as Senior Vice President and as an advisor to Mr. Rattie.

b.

Effective May 7, 2009, Richard J. Doleshek will serve as Executive Vice President and Chief Financial Officer of the Company. Mr. Doleshek, age 50, served as Executive Vice President and Chief Financial Officer of Hilcorp Energy Company, an oil and gas exploration and production company, from 2001 until April 2009. Hilcorp has no relationship with Questar Corporation.

Item 9.01 Financial Statements and Exhibits.

(c)

Exhibits.

Exhibit No.

Exhibit

99.1

Press release issued April 30, 2009, by Questar Corporation.