EARNINGS RELEASES

Questar Net Income Up 45% In Third Quarter 2006; Company Raises 2006 Earnings Guidance,
Provides Initial 2007 Outlook
(Oct. 26, 2006)

Questar Net Income Up 49% In Second-Quarter 2006; Company Updates Estimates of Probable, Possible Reserves
(July 26, 2006)

Questar Net Income Grows 44% In First-Quarter 2006; Company Raises 2006 EPS and Production Guidance
(April 26, 2006)

Questar Net Income Grows 42% In 2005; Company Adjusts 2006 Earnings Guidance To Reflect Lower Price Expectations
(Feb. 14, 2006)

DIVIDEND RELEASES

Questar Board Declares 248th Consecutive Dividend Without A Reduction
(Oct. 24, 2006)

Questar Board Declares 247th Consecutive Dividend Without A Reduction
(Aug. 8, 2006)

Questar Board Declares Increased Quarterly Dividend
(May 16, 2006)

Questar Board Declares 245th Consecutive Dividend Without A Reduction
(Feb. 14, 2006)